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Diffstat (limited to 'bfd/elf32-mips.c')
| -rw-r--r-- | bfd/elf32-mips.c | 7800 |
1 files changed, 7800 insertions, 0 deletions
diff --git a/bfd/elf32-mips.c b/bfd/elf32-mips.c new file mode 100644 index 0000000..9f03262 --- /dev/null +++ b/bfd/elf32-mips.c @@ -0,0 +1,7800 @@ +/* MIPS-specific support for 32-bit ELF + Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. + + Most of the information added by Ian Lance Taylor, Cygnus Support, + <ian@cygnus.com>. + +This file is part of BFD, the Binary File Descriptor library. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly + different MIPS ELF from other targets. This matters when linking. + This file supports both, switching at runtime. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "bfdlink.h" +#include "genlink.h" +#include "elf-bfd.h" +#include "elf/mips.h" + +/* Get the ECOFF swapping routines. */ +#include "coff/sym.h" +#include "coff/symconst.h" +#include "coff/internal.h" +#include "coff/ecoff.h" +#include "coff/mips.h" +#define ECOFF_32 +#include "ecoffswap.h" + +static bfd_reloc_status_type mips32_64bit_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup + PARAMS ((bfd *, bfd_reloc_code_real_type)); +static void mips_info_to_howto_rel + PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); +static void bfd_mips_elf32_swap_gptab_in + PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); +static void bfd_mips_elf32_swap_gptab_out + PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); +static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); +static boolean mips_elf32_object_p PARAMS ((bfd *)); +static boolean mips_elf_create_procedure_table + PARAMS ((PTR, bfd *, struct bfd_link_info *, asection *, + struct ecoff_debug_info *)); +static int mips_elf_additional_program_headers PARAMS ((bfd *)); +static boolean mips_elf_modify_segment_map PARAMS ((bfd *)); +static INLINE int elf_mips_isa PARAMS ((flagword)); +static INLINE int elf_mips_mach PARAMS ((flagword)); +static INLINE char* elf_mips_abi_name PARAMS ((flagword)); +static boolean mips_elf32_section_from_shdr + PARAMS ((bfd *, Elf32_Internal_Shdr *, char *)); +static boolean mips_elf32_section_processing + PARAMS ((bfd *, Elf32_Internal_Shdr *)); +static boolean mips_elf_is_local_label_name + PARAMS ((bfd *, const char *)); +static struct bfd_hash_entry *mips_elf_link_hash_newfunc + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); +static struct bfd_link_hash_table *mips_elf_link_hash_table_create + PARAMS ((bfd *)); +static int gptab_compare PARAMS ((const void *, const void *)); +static boolean mips_elf_final_link + PARAMS ((bfd *, struct bfd_link_info *)); +static void mips_elf_relocate_hi16 + PARAMS ((bfd *, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, + bfd_vma)); +static boolean mips_elf_relocate_got_local + PARAMS ((bfd *, bfd *, asection *, Elf_Internal_Rela *, + Elf_Internal_Rela *, bfd_byte *, bfd_vma)); +static void mips_elf_relocate_global_got + PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma)); +static bfd_reloc_status_type mips16_jump_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type mips16_gprel_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static boolean mips_elf_adjust_dynindx + PARAMS ((struct elf_link_hash_entry *, PTR)); +static boolean mips_elf_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static boolean mips_elf_link_output_symbol_hook + PARAMS ((bfd *, struct bfd_link_info *, const char *, Elf_Internal_Sym *, + asection *)); +static boolean mips_elf_create_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean mips_elf_create_compact_rel_section + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean mips_elf_create_got_section + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean mips_elf_check_relocs + PARAMS ((bfd *, struct bfd_link_info *, asection *, + const Elf_Internal_Rela *)); +static boolean mips_elf_adjust_dynamic_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); +static boolean mips_elf_always_size_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean mips_elf_size_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean mips_elf_finish_dynamic_symbol + PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, + Elf_Internal_Sym *)); +static boolean mips_elf_finish_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static boolean mips_elf_add_symbol_hook + PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, + const char **, flagword *, asection **, bfd_vma *)); +static bfd_reloc_status_type mips_elf_final_gp + PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); +static bfd_byte *elf32_mips_get_relocated_section_contents + PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, + bfd_byte *, boolean, asymbol **)); + +/* This is true for Irix 5 executables, false for normal MIPS ELF ABI + executables. FIXME: At the moment, we default to always generating + Irix 5 executables. */ + +#define SGI_COMPAT(abfd) (1) + +/* This structure is used to hold .got information when linking. It + is stored in the tdata field of the bfd_elf_section_data structure. */ + +struct mips_got_info +{ + /* The symbol index of the first global .got symbol. */ + unsigned long global_gotsym; + /* The number of local .got entries. */ + unsigned int local_gotno; + /* The number of local .got entries we have used. */ + unsigned int assigned_gotno; +}; + +/* The number of local .got entries we reserve. */ +#define MIPS_RESERVED_GOTNO (2) + +/* Instructions which appear in a stub. For some reason the stub is + slightly different on an SGI system. */ +#define ELF_MIPS_GP_OFFSET(abfd) (SGI_COMPAT (abfd) ? 0x7ff0 : 0x8000) +#define STUB_LW(abfd) \ + (SGI_COMPAT (abfd) \ + ? 0x8f998010 /* lw t9,0x8010(gp) */ \ + : 0x8f998000) /* lw t9,0x8000(gp) */ +#define STUB_MOVE 0x03e07825 /* move t7,ra */ +#define STUB_JALR 0x0320f809 /* jal t9 */ +#define STUB_LI16 0x34180000 /* ori t8,zero,0 */ +#define MIPS_FUNCTION_STUB_SIZE (16) + +#if 0 +/* We no longer try to identify particular sections for the .dynsym + section. When we do, we wind up crashing if there are other random + sections with relocations. */ + +/* Names of sections which appear in the .dynsym section in an Irix 5 + executable. */ + +static const char * const mips_elf_dynsym_sec_names[] = +{ + ".text", + ".init", + ".fini", + ".data", + ".rodata", + ".sdata", + ".sbss", + ".bss", + NULL +}; + +#define SIZEOF_MIPS_DYNSYM_SECNAMES \ + (sizeof mips_elf_dynsym_sec_names / sizeof mips_elf_dynsym_sec_names[0]) + +/* The number of entries in mips_elf_dynsym_sec_names which go in the + text segment. */ + +#define MIPS_TEXT_DYNSYM_SECNO (3) + +#endif /* 0 */ + +/* The names of the runtime procedure table symbols used on Irix 5. */ + +static const char * const mips_elf_dynsym_rtproc_names[] = +{ + "_procedure_table", + "_procedure_string_table", + "_procedure_table_size", + NULL +}; + +/* These structures are used to generate the .compact_rel section on + Irix 5. */ + +typedef struct +{ + unsigned long id1; /* Always one? */ + unsigned long num; /* Number of compact relocation entries. */ + unsigned long id2; /* Always two? */ + unsigned long offset; /* The file offset of the first relocation. */ + unsigned long reserved0; /* Zero? */ + unsigned long reserved1; /* Zero? */ +} Elf32_compact_rel; + +typedef struct +{ + bfd_byte id1[4]; + bfd_byte num[4]; + bfd_byte id2[4]; + bfd_byte offset[4]; + bfd_byte reserved0[4]; + bfd_byte reserved1[4]; +} Elf32_External_compact_rel; + +typedef struct +{ + unsigned int ctype : 1; /* 1: long 0: short format. See below. */ + unsigned int rtype : 4; /* Relocation types. See below. */ + unsigned int dist2to : 8; + unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ + unsigned long konst; /* KONST field. See below. */ + unsigned long vaddr; /* VADDR to be relocated. */ +} Elf32_crinfo; + +typedef struct +{ + unsigned int ctype : 1; /* 1: long 0: short format. See below. */ + unsigned int rtype : 4; /* Relocation types. See below. */ + unsigned int dist2to : 8; + unsigned int relvaddr : 19; /* (VADDR - vaddr of the previous entry)/ 4 */ + unsigned long konst; /* KONST field. See below. */ +} Elf32_crinfo2; + +typedef struct +{ + bfd_byte info[4]; + bfd_byte konst[4]; + bfd_byte vaddr[4]; +} Elf32_External_crinfo; + +typedef struct +{ + bfd_byte info[4]; + bfd_byte konst[4]; +} Elf32_External_crinfo2; + +/* These are the constants used to swap the bitfields in a crinfo. */ + +#define CRINFO_CTYPE (0x1) +#define CRINFO_CTYPE_SH (31) +#define CRINFO_RTYPE (0xf) +#define CRINFO_RTYPE_SH (27) +#define CRINFO_DIST2TO (0xff) +#define CRINFO_DIST2TO_SH (19) +#define CRINFO_RELVADDR (0x7ffff) +#define CRINFO_RELVADDR_SH (0) + +/* A compact relocation info has long (3 words) or short (2 words) + formats. A short format doesn't have VADDR field and relvaddr + fields contains ((VADDR - vaddr of the previous entry) >> 2). */ +#define CRF_MIPS_LONG 1 +#define CRF_MIPS_SHORT 0 + +/* There are 4 types of compact relocation at least. The value KONST + has different meaning for each type: + + (type) (konst) + CT_MIPS_REL32 Address in data + CT_MIPS_WORD Address in word (XXX) + CT_MIPS_GPHI_LO GP - vaddr + CT_MIPS_JMPAD Address to jump + */ + +#define CRT_MIPS_REL32 0xa +#define CRT_MIPS_WORD 0xb +#define CRT_MIPS_GPHI_LO 0xc +#define CRT_MIPS_JMPAD 0xd + +#define mips_elf_set_cr_format(x,format) ((x).ctype = (format)) +#define mips_elf_set_cr_type(x,type) ((x).rtype = (type)) +#define mips_elf_set_cr_dist2to(x,v) ((x).dist2to = (v)) +#define mips_elf_set_cr_relvaddr(x,d) ((x).relvaddr = (d)<<2) + +static void bfd_elf32_swap_compact_rel_out + PARAMS ((bfd *, const Elf32_compact_rel *, Elf32_External_compact_rel *)); +static void bfd_elf32_swap_crinfo_out + PARAMS ((bfd *, const Elf32_crinfo *, Elf32_External_crinfo *)); + +#define USE_REL 1 /* MIPS uses REL relocations instead of RELA */ + +static reloc_howto_type elf_mips_howto_table[] = +{ + /* No relocation. */ + HOWTO (R_MIPS_NONE, /* type */ + 0, /* rightshift */ + 0, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_NONE", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + false), /* pcrel_offset */ + + /* 16 bit relocation. */ + HOWTO (R_MIPS_16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_16", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 32 bit relocation. */ + HOWTO (R_MIPS_32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_32", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 32 bit symbol relative relocation. */ + HOWTO (R_MIPS_REL32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_REL32", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 26 bit branch address. */ + HOWTO (R_MIPS_26, /* type */ + 2, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + /* This needs complex overflow + detection, because the upper four + bits must match the PC. */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_26", /* name */ + true, /* partial_inplace */ + 0x3ffffff, /* src_mask */ + 0x3ffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* High 16 bits of symbol value. */ + HOWTO (R_MIPS_HI16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + _bfd_mips_elf_hi16_reloc, /* special_function */ + "R_MIPS_HI16", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Low 16 bits of symbol value. */ + HOWTO (R_MIPS_LO16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + _bfd_mips_elf_lo16_reloc, /* special_function */ + "R_MIPS_LO16", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* GP relative reference. */ + HOWTO (R_MIPS_GPREL16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + _bfd_mips_elf_gprel16_reloc, /* special_function */ + "R_MIPS_GPREL16", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Reference to literal section. */ + HOWTO (R_MIPS_LITERAL, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + _bfd_mips_elf_gprel16_reloc, /* special_function */ + "R_MIPS_LITERAL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Reference to global offset table. */ + HOWTO (R_MIPS_GOT16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + _bfd_mips_elf_got16_reloc, /* special_function */ + "R_MIPS_GOT16", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 16 bit PC relative reference. */ + HOWTO (R_MIPS_PC16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + true, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_PC16", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 16 bit call through global offset table. */ + /* FIXME: This is not handled correctly. */ + HOWTO (R_MIPS_CALL16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_CALL16", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 32 bit GP relative reference. */ + HOWTO (R_MIPS_GPREL32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + _bfd_mips_elf_gprel32_reloc, /* special_function */ + "R_MIPS_GPREL32", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* The remaining relocs are defined on Irix 5, although they are + not defined by the ABI. */ + { 13 }, + { 14 }, + { 15 }, + + /* A 5 bit shift field. */ + HOWTO (R_MIPS_SHIFT5, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 5, /* bitsize */ + false, /* pc_relative */ + 6, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_SHIFT5", /* name */ + true, /* partial_inplace */ + 0x000007c0, /* src_mask */ + 0x000007c0, /* dst_mask */ + false), /* pcrel_offset */ + + /* A 6 bit shift field. */ + /* FIXME: This is not handled correctly; a special function is + needed to put the most significant bit in the right place. */ + HOWTO (R_MIPS_SHIFT6, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 6, /* bitsize */ + false, /* pc_relative */ + 6, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_SHIFT6", /* name */ + true, /* partial_inplace */ + 0x000007c4, /* src_mask */ + 0x000007c4, /* dst_mask */ + false), /* pcrel_offset */ + + /* A 64 bit relocation. This is used in 32 bit ELF when addresses + are 64 bits long; the upper 32 bits are simply a sign extension. + The fields of the howto should be the same as for R_MIPS_32, + other than the type, name, and special_function. */ + HOWTO (R_MIPS_64, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + mips32_64bit_reloc, /* special_function */ + "R_MIPS_64", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Displacement in the global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_GOT_DISP, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_GOT_DISP", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Displacement to page pointer in the global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_GOT_PAGE, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_GOT_PAGE", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Offset from page pointer in the global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_GOT_OFST, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_GOT_OFST", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* High 16 bits of displacement in global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_GOT_HI16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_GOT_HI16", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Low 16 bits of displacement in global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_GOT_LO16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_GOT_LO16", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 64 bit subtraction. Presumably not used in 32 bit ELF. */ + { R_MIPS_SUB }, + + /* Used to cause the linker to insert and delete instructions? */ + { R_MIPS_INSERT_A }, + { R_MIPS_INSERT_B }, + { R_MIPS_DELETE }, + + /* Get the higher values of a 64 bit addend. Presumably not used in + 32 bit ELF. */ + { R_MIPS_HIGHER }, + { R_MIPS_HIGHEST }, + + /* High 16 bits of displacement in global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_CALL_HI16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_CALL_HI16", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Low 16 bits of displacement in global offset table. */ + /* FIXME: Not handled correctly. */ + HOWTO (R_MIPS_CALL_LO16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MIPS_CALL_LO16", /* name */ + true, /* partial_inplace */ + 0x0000ffff, /* src_mask */ + 0x0000ffff, /* dst_mask */ + false), /* pcrel_offset */ + + { R_MIPS_SCN_DISP }, + { R_MIPS_REL16 }, + { R_MIPS_ADD_IMMEDIATE }, + { R_MIPS_PJUMP }, + { R_MIPS_RELGOT } +}; + +/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This + is a hack to make the linker think that we need 64 bit values. */ +static reloc_howto_type elf_mips_ctor64_howto = + HOWTO (R_MIPS_64, /* type */ + 0, /* rightshift */ + 4, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + mips32_64bit_reloc, /* special_function */ + "R_MIPS_64", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false); /* pcrel_offset */ + +/* The reloc used for the mips16 jump instruction. */ +static reloc_howto_type elf_mips16_jump_howto = + HOWTO (R_MIPS16_26, /* type */ + 2, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + /* This needs complex overflow + detection, because the upper four + bits must match the PC. */ + mips16_jump_reloc, /* special_function */ + "R_MIPS16_26", /* name */ + true, /* partial_inplace */ + 0x3ffffff, /* src_mask */ + 0x3ffffff, /* dst_mask */ + false); /* pcrel_offset */ + +/* The reloc used for the mips16 gprel instruction. The src_mask and + dsk_mask for this howto do not reflect the actual instruction, in + which the value is not contiguous; the masks are for the + convenience of the relocate_section routine. */ +static reloc_howto_type elf_mips16_gprel_howto = + HOWTO (R_MIPS16_GPREL, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + mips16_gprel_reloc, /* special_function */ + "R_MIPS16_GPREL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false); /* pcrel_offset */ + + +/* GNU extension to record C++ vtable hierarchy */ +static reloc_howto_type elf_mips_gnu_vtinherit_howto = + HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + NULL, /* special_function */ + "R_MIPS_GNU_VTINHERIT", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + false); /* pcrel_offset */ + +/* GNU extension to record C++ vtable member usage */ +static reloc_howto_type elf_mips_gnu_vtentry_howto = + HOWTO (R_MIPS_GNU_VTENTRY, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + _bfd_elf_rel_vtable_reloc_fn, /* special_function */ + "R_MIPS_GNU_VTENTRY", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + false); /* pcrel_offset */ + +/* Do a R_MIPS_HI16 relocation. This has to be done in combination + with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to + the HI16. Here we just save the information we need; we do the + actual relocation when we see the LO16. MIPS ELF requires that the + LO16 immediately follow the HI16. As a GNU extension, we permit an + arbitrary number of HI16 relocs to be associated with a single LO16 + reloc. This extension permits gcc to output the HI and LO relocs + itself. */ + +struct mips_hi16 +{ + struct mips_hi16 *next; + bfd_byte *addr; + bfd_vma addend; +}; + +/* FIXME: This should not be a static variable. */ + +static struct mips_hi16 *mips_hi16_list; + +bfd_reloc_status_type +_bfd_mips_elf_hi16_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_reloc_status_type ret; + bfd_vma relocation; + struct mips_hi16 *n; + + /* If we're relocating, and this an external symbol, we don't want + to change anything. */ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && reloc_entry->addend == 0) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + ret = bfd_reloc_ok; + + if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) + { + boolean relocateable; + bfd_vma gp; + + if (ret == bfd_reloc_undefined) + abort (); + + if (output_bfd != NULL) + relocateable = true; + else + { + relocateable = false; + output_bfd = symbol->section->output_section->owner; + } + + ret = mips_elf_final_gp (output_bfd, symbol, relocateable, + error_message, &gp); + if (ret != bfd_reloc_ok) + return ret; + + relocation = gp - reloc_entry->address; + } + else + { + if (bfd_is_und_section (symbol->section) + && output_bfd == (bfd *) NULL) + ret = bfd_reloc_undefined; + + if (bfd_is_com_section (symbol->section)) + relocation = 0; + else + relocation = symbol->value; + } + + relocation += symbol->section->output_section->vma; + relocation += symbol->section->output_offset; + relocation += reloc_entry->addend; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + /* Save the information, and let LO16 do the actual relocation. */ + n = (struct mips_hi16 *) bfd_malloc (sizeof *n); + if (n == NULL) + return bfd_reloc_outofrange; + n->addr = (bfd_byte *) data + reloc_entry->address; + n->addend = relocation; + n->next = mips_hi16_list; + mips_hi16_list = n; + + if (output_bfd != (bfd *) NULL) + reloc_entry->address += input_section->output_offset; + + return ret; +} + +/* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit + inplace relocation; this function exists in order to do the + R_MIPS_HI16 relocation described above. */ + +bfd_reloc_status_type +_bfd_mips_elf_lo16_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + arelent gp_disp_relent; + + if (mips_hi16_list != NULL) + { + struct mips_hi16 *l; + + l = mips_hi16_list; + while (l != NULL) + { + unsigned long insn; + unsigned long val; + unsigned long vallo; + struct mips_hi16 *next; + + /* Do the HI16 relocation. Note that we actually don't need + to know anything about the LO16 itself, except where to + find the low 16 bits of the addend needed by the LO16. */ + insn = bfd_get_32 (abfd, l->addr); + vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address) + & 0xffff); + val = ((insn & 0xffff) << 16) + vallo; + val += l->addend; + + /* The low order 16 bits are always treated as a signed + value. Therefore, a negative value in the low order bits + requires an adjustment in the high order bits. We need + to make this adjustment in two ways: once for the bits we + took from the data, and once for the bits we are putting + back in to the data. */ + if ((vallo & 0x8000) != 0) + val -= 0x10000; + if ((val & 0x8000) != 0) + val += 0x10000; + + insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff); + bfd_put_32 (abfd, insn, l->addr); + + if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) + { + gp_disp_relent = *reloc_entry; + reloc_entry = &gp_disp_relent; + reloc_entry->addend = l->addend; + } + + next = l->next; + free (l); + l = next; + } + + mips_hi16_list = NULL; + } + else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) + { + bfd_reloc_status_type ret; + bfd_vma gp, relocation; + + /* FIXME: Does this case ever occur? */ + + ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); + if (ret != bfd_reloc_ok) + return ret; + + relocation = gp - reloc_entry->address; + relocation += symbol->section->output_section->vma; + relocation += symbol->section->output_offset; + relocation += reloc_entry->addend; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + gp_disp_relent = *reloc_entry; + reloc_entry = &gp_disp_relent; + reloc_entry->addend = relocation - 4; + } + + /* Now do the LO16 reloc in the usual way. */ + return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); +} + +/* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset + table used for PIC code. If the symbol is an external symbol, the + instruction is modified to contain the offset of the appropriate + entry in the global offset table. If the symbol is a section + symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit + addends are combined to form the real addend against the section + symbol; the GOT16 is modified to contain the offset of an entry in + the global offset table, and the LO16 is modified to offset it + appropriately. Thus an offset larger than 16 bits requires a + modified value in the global offset table. + + This implementation suffices for the assembler, but the linker does + not yet know how to create global offset tables. */ + +bfd_reloc_status_type +_bfd_mips_elf_got16_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + /* If we're relocating, and this an external symbol, we don't want + to change anything. */ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && reloc_entry->addend == 0) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + /* If we're relocating, and this is a local symbol, we can handle it + just like HI16. */ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) != 0) + return _bfd_mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + + abort (); +} + +/* We have to figure out the gp value, so that we can adjust the + symbol value correctly. We look up the symbol _gp in the output + BFD. If we can't find it, we're stuck. We cache it in the ELF + target data. We don't need to adjust the symbol value for an + external symbol if we are producing relocateable output. */ + +static bfd_reloc_status_type +mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) + bfd *output_bfd; + asymbol *symbol; + boolean relocateable; + char **error_message; + bfd_vma *pgp; +{ + if (bfd_is_und_section (symbol->section) + && ! relocateable) + { + *pgp = 0; + return bfd_reloc_undefined; + } + + *pgp = _bfd_get_gp_value (output_bfd); + if (*pgp == 0 + && (! relocateable + || (symbol->flags & BSF_SECTION_SYM) != 0)) + { + if (relocateable) + { + /* Make up a value. */ + *pgp = symbol->section->output_section->vma + 0x4000; + _bfd_set_gp_value (output_bfd, *pgp); + } + else + { + unsigned int count; + asymbol **sym; + unsigned int i; + + count = bfd_get_symcount (output_bfd); + sym = bfd_get_outsymbols (output_bfd); + + if (sym == (asymbol **) NULL) + i = count; + else + { + for (i = 0; i < count; i++, sym++) + { + register CONST char *name; + + name = bfd_asymbol_name (*sym); + if (*name == '_' && strcmp (name, "_gp") == 0) + { + *pgp = bfd_asymbol_value (*sym); + _bfd_set_gp_value (output_bfd, *pgp); + break; + } + } + } + + if (i >= count) + { + /* Only get the error once. */ + *pgp = 4; + _bfd_set_gp_value (output_bfd, *pgp); + *error_message = + (char *) _("GP relative relocation when _gp not defined"); + return bfd_reloc_dangerous; + } + } + } + + return bfd_reloc_ok; +} + +/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must + become the offset from the gp register. This function also handles + R_MIPS_LITERAL relocations, although those can be handled more + cleverly because the entries in the .lit8 and .lit4 sections can be + merged. */ + +static bfd_reloc_status_type gprel16_with_gp PARAMS ((bfd *, asymbol *, + arelent *, asection *, + boolean, PTR, bfd_vma)); + +bfd_reloc_status_type +_bfd_mips_elf_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, + output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + boolean relocateable; + bfd_reloc_status_type ret; + bfd_vma gp; + + /* If we're relocating, and this is an external symbol with no + addend, we don't want to change anything. We will only have an + addend if this is a newly created reloc, not read from an ELF + file. */ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && reloc_entry->addend == 0) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + if (output_bfd != (bfd *) NULL) + relocateable = true; + else + { + relocateable = false; + output_bfd = symbol->section->output_section->owner; + } + + ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, + &gp); + if (ret != bfd_reloc_ok) + return ret; + + return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, + relocateable, data, gp); +} + +static bfd_reloc_status_type +gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, + gp) + bfd *abfd; + asymbol *symbol; + arelent *reloc_entry; + asection *input_section; + boolean relocateable; + PTR data; + bfd_vma gp; +{ + bfd_vma relocation; + unsigned long insn; + unsigned long val; + + if (bfd_is_com_section (symbol->section)) + relocation = 0; + else + relocation = symbol->value; + + relocation += symbol->section->output_section->vma; + relocation += symbol->section->output_offset; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); + + /* Set val to the offset into the section or symbol. */ + if (reloc_entry->howto->src_mask == 0) + { + /* This case occurs with the 64-bit MIPS ELF ABI. */ + val = reloc_entry->addend; + } + else + { + val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; + if (val & 0x8000) + val -= 0x10000; + } + + /* Adjust val for the final section location and GP value. If we + are producing relocateable output, we don't want to do this for + an external symbol. */ + if (! relocateable + || (symbol->flags & BSF_SECTION_SYM) != 0) + val += relocation - gp; + + insn = (insn &~ 0xffff) | (val & 0xffff); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); + + if (relocateable) + reloc_entry->address += input_section->output_offset; + + /* Make sure it fit in 16 bits. */ + if (val >= 0x8000 && val < 0xffff8000) + return bfd_reloc_overflow; + + return bfd_reloc_ok; +} + +/* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset + from the gp register? XXX */ + +static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, + arelent *, asection *, + boolean, PTR, bfd_vma)); + +bfd_reloc_status_type +_bfd_mips_elf_gprel32_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + boolean relocateable; + bfd_reloc_status_type ret; + bfd_vma gp; + + /* If we're relocating, and this is an external symbol with no + addend, we don't want to change anything. We will only have an + addend if this is a newly created reloc, not read from an ELF + file. */ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && reloc_entry->addend == 0) + { + *error_message = (char *) + _("32bits gp relative relocation occurs for an external symbol"); + return bfd_reloc_outofrange; + } + + if (output_bfd != (bfd *) NULL) + { + relocateable = true; + gp = _bfd_get_gp_value (output_bfd); + } + else + { + relocateable = false; + output_bfd = symbol->section->output_section->owner; + + ret = mips_elf_final_gp (output_bfd, symbol, relocateable, + error_message, &gp); + if (ret != bfd_reloc_ok) + return ret; + } + + return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, + relocateable, data, gp); +} + +static bfd_reloc_status_type +gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, + gp) + bfd *abfd; + asymbol *symbol; + arelent *reloc_entry; + asection *input_section; + boolean relocateable; + PTR data; + bfd_vma gp; +{ + bfd_vma relocation; + unsigned long val; + + if (bfd_is_com_section (symbol->section)) + relocation = 0; + else + relocation = symbol->value; + + relocation += symbol->section->output_section->vma; + relocation += symbol->section->output_offset; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + if (reloc_entry->howto->src_mask == 0) + { + /* This case arises with the 64-bit MIPS ELF ABI. */ + val = 0; + } + else + val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); + + /* Set val to the offset into the section or symbol. */ + val += reloc_entry->addend; + + /* Adjust val for the final section location and GP value. If we + are producing relocateable output, we don't want to do this for + an external symbol. */ + if (! relocateable + || (symbol->flags & BSF_SECTION_SYM) != 0) + val += relocation - gp; + + bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); + + if (relocateable) + reloc_entry->address += input_section->output_offset; + + return bfd_reloc_ok; +} + +/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are + generated when addreses are 64 bits. The upper 32 bits are a simle + sign extension. */ + +static bfd_reloc_status_type +mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, + output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_reloc_status_type r; + arelent reloc32; + unsigned long val; + bfd_size_type addr; + + r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); + if (r != bfd_reloc_continue) + return r; + + /* Do a normal 32 bit relocation on the lower 32 bits. */ + reloc32 = *reloc_entry; + if (bfd_big_endian (abfd)) + reloc32.address += 4; + reloc32.howto = &elf_mips_howto_table[R_MIPS_32]; + r = bfd_perform_relocation (abfd, &reloc32, data, input_section, + output_bfd, error_message); + + /* Sign extend into the upper 32 bits. */ + val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); + if ((val & 0x80000000) != 0) + val = 0xffffffff; + else + val = 0; + addr = reloc_entry->address; + if (bfd_little_endian (abfd)) + addr += 4; + bfd_put_32 (abfd, val, (bfd_byte *) data + addr); + + return r; +} + +/* Handle a mips16 jump. */ + +static bfd_reloc_status_type +mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, + output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && reloc_entry->addend == 0) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + /* FIXME. */ + { + static boolean warned; + + if (! warned) + (*_bfd_error_handler) + (_("Linking mips16 objects into %s format is not supported"), + bfd_get_target (input_section->output_section->owner)); + warned = true; + } + + return bfd_reloc_undefined; +} + +/* Handle a mips16 GP relative reloc. */ + +static bfd_reloc_status_type +mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, + output_bfd, error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + boolean relocateable; + bfd_reloc_status_type ret; + bfd_vma gp; + unsigned short extend, insn; + unsigned long final; + + /* If we're relocating, and this is an external symbol with no + addend, we don't want to change anything. We will only have an + addend if this is a newly created reloc, not read from an ELF + file. */ + if (output_bfd != NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && reloc_entry->addend == 0) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + if (output_bfd != NULL) + relocateable = true; + else + { + relocateable = false; + output_bfd = symbol->section->output_section->owner; + } + + ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, + &gp); + if (ret != bfd_reloc_ok) + return ret; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + /* Pick up the mips16 extend instruction and the real instruction. */ + extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); + insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); + + /* Stuff the current addend back as a 32 bit value, do the usual + relocation, and then clean up. */ + bfd_put_32 (abfd, + (((extend & 0x1f) << 11) + | (extend & 0x7e0) + | (insn & 0x1f)), + (bfd_byte *) data + reloc_entry->address); + + ret = gprel16_with_gp (abfd, symbol, reloc_entry, input_section, + relocateable, data, gp); + + final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); + bfd_put_16 (abfd, + ((extend & 0xf800) + | ((final >> 11) & 0x1f) + | (final & 0x7e0)), + (bfd_byte *) data + reloc_entry->address); + bfd_put_16 (abfd, + ((insn & 0xffe0) + | (final & 0x1f)), + (bfd_byte *) data + reloc_entry->address + 2); + + return ret; +} + +/* Return the ISA for a MIPS e_flags value. */ + +static INLINE int +elf_mips_isa (flags) + flagword flags; +{ + switch (flags & EF_MIPS_ARCH) + { + case E_MIPS_ARCH_1: + return 1; + case E_MIPS_ARCH_2: + return 2; + case E_MIPS_ARCH_3: + return 3; + case E_MIPS_ARCH_4: + return 4; + } + return 4; +} + +/* Return the MACH for a MIPS e_flags value. */ + +static INLINE int +elf_mips_mach (flags) + flagword flags; +{ + switch (flags & EF_MIPS_MACH) + { + case E_MIPS_MACH_3900: + return bfd_mach_mips3900; + + case E_MIPS_MACH_4010: + return bfd_mach_mips4010; + + case E_MIPS_MACH_4100: + return bfd_mach_mips4100; + + case E_MIPS_MACH_4111: + return bfd_mach_mips4111; + + case E_MIPS_MACH_4650: + return bfd_mach_mips4650; + + default: + switch (flags & EF_MIPS_ARCH) + { + default: + case E_MIPS_ARCH_1: + return bfd_mach_mips3000; + break; + + case E_MIPS_ARCH_2: + return bfd_mach_mips6000; + break; + + case E_MIPS_ARCH_3: + return bfd_mach_mips4000; + break; + + case E_MIPS_ARCH_4: + return bfd_mach_mips8000; + break; + } + } + + return 0; +} + +/* Return printable name for ABI from flagword. */ + +static INLINE char* +elf_mips_abi_name (flags) + flagword flags; +{ + switch (flags & EF_MIPS_ABI) + { + case 0: + return "none"; + case E_MIPS_ABI_O32: + return "O32"; + case E_MIPS_ABI_O64: + return "O64"; + case E_MIPS_ABI_EABI32: + return "EABI32"; + case E_MIPS_ABI_EABI64: + return "EABI64"; + default: + return "unknown abi"; + } +} + +/* A mapping from BFD reloc types to MIPS ELF reloc types. */ + +struct elf_reloc_map { + bfd_reloc_code_real_type bfd_reloc_val; + enum elf_mips_reloc_type elf_reloc_val; +}; + +static CONST struct elf_reloc_map mips_reloc_map[] = +{ + { BFD_RELOC_NONE, R_MIPS_NONE, }, + { BFD_RELOC_16, R_MIPS_16 }, + { BFD_RELOC_32, R_MIPS_32 }, + { BFD_RELOC_64, R_MIPS_64 }, + { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, + { BFD_RELOC_HI16_S, R_MIPS_HI16 }, + { BFD_RELOC_LO16, R_MIPS_LO16 }, + { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 }, + { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, + { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, + { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, + { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, + { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 }, + { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, + { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, + { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, + { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 } +}; + +/* Given a BFD reloc type, return a howto structure. */ + +static reloc_howto_type * +bfd_elf32_bfd_reloc_type_lookup (abfd, code) + bfd *abfd; + bfd_reloc_code_real_type code; +{ + unsigned int i; + + for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++) + { + if (mips_reloc_map[i].bfd_reloc_val == code) + return &elf_mips_howto_table[(int) mips_reloc_map[i].elf_reloc_val]; + } + + switch (code) + { + default: + bfd_set_error (bfd_error_bad_value); + return NULL; + + case BFD_RELOC_CTOR: + /* We need to handle BFD_RELOC_CTOR specially. + Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the + size of addresses on this architecture. */ + if (bfd_arch_bits_per_address (abfd) == 32) + return &elf_mips_howto_table[(int) R_MIPS_32]; + else + return &elf_mips_ctor64_howto; + + case BFD_RELOC_MIPS16_JMP: + return &elf_mips16_jump_howto; + case BFD_RELOC_MIPS16_GPREL: + return &elf_mips16_gprel_howto; + case BFD_RELOC_VTABLE_INHERIT: + return &elf_mips_gnu_vtinherit_howto; + case BFD_RELOC_VTABLE_ENTRY: + return &elf_mips_gnu_vtentry_howto; + } +} + +/* Given a MIPS reloc type, fill in an arelent structure. */ + +static void +mips_info_to_howto_rel (abfd, cache_ptr, dst) + bfd *abfd; + arelent *cache_ptr; + Elf32_Internal_Rel *dst; +{ + unsigned int r_type; + + r_type = ELF32_R_TYPE (dst->r_info); + switch (r_type) + { + case R_MIPS16_26: + cache_ptr->howto = &elf_mips16_jump_howto; + break; + case R_MIPS16_GPREL: + cache_ptr->howto = &elf_mips16_gprel_howto; + break; + case R_MIPS_GNU_VTINHERIT: + cache_ptr->howto = &elf_mips_gnu_vtinherit_howto; + break; + case R_MIPS_GNU_VTENTRY: + cache_ptr->howto = &elf_mips_gnu_vtentry_howto; + break; + + default: + BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); + cache_ptr->howto = &elf_mips_howto_table[r_type]; + break; + } + + /* The addend for a GPREL16 or LITERAL relocation comes from the GP + value for the object file. We get the addend now, rather than + when we do the relocation, because the symbol manipulations done + by the linker may cause us to lose track of the input BFD. */ + if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 + && (r_type == (unsigned int) R_MIPS_GPREL16 + || r_type == (unsigned int) R_MIPS_LITERAL)) + cache_ptr->addend = elf_gp (abfd); +} + +/* A .reginfo section holds a single Elf32_RegInfo structure. These + routines swap this structure in and out. They are used outside of + BFD, so they are globally visible. */ + +void +bfd_mips_elf32_swap_reginfo_in (abfd, ex, in) + bfd *abfd; + const Elf32_External_RegInfo *ex; + Elf32_RegInfo *in; +{ + in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); + in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); + in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); + in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); + in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); + in->ri_gp_value = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gp_value); +} + +void +bfd_mips_elf32_swap_reginfo_out (abfd, in, ex) + bfd *abfd; + const Elf32_RegInfo *in; + Elf32_External_RegInfo *ex; +{ + bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, + (bfd_byte *) ex->ri_gprmask); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], + (bfd_byte *) ex->ri_cprmask[0]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], + (bfd_byte *) ex->ri_cprmask[1]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], + (bfd_byte *) ex->ri_cprmask[2]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], + (bfd_byte *) ex->ri_cprmask[3]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_gp_value, + (bfd_byte *) ex->ri_gp_value); +} + +/* In the 64 bit ABI, the .MIPS.options section holds register + information in an Elf64_Reginfo structure. These routines swap + them in and out. They are globally visible because they are used + outside of BFD. These routines are here so that gas can call them + without worrying about whether the 64 bit ABI has been included. */ + +void +bfd_mips_elf64_swap_reginfo_in (abfd, ex, in) + bfd *abfd; + const Elf64_External_RegInfo *ex; + Elf64_Internal_RegInfo *in; +{ + in->ri_gprmask = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_gprmask); + in->ri_pad = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_pad); + in->ri_cprmask[0] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[0]); + in->ri_cprmask[1] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[1]); + in->ri_cprmask[2] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[2]); + in->ri_cprmask[3] = bfd_h_get_32 (abfd, (bfd_byte *) ex->ri_cprmask[3]); + in->ri_gp_value = bfd_h_get_64 (abfd, (bfd_byte *) ex->ri_gp_value); +} + +void +bfd_mips_elf64_swap_reginfo_out (abfd, in, ex) + bfd *abfd; + const Elf64_Internal_RegInfo *in; + Elf64_External_RegInfo *ex; +{ + bfd_h_put_32 (abfd, (bfd_vma) in->ri_gprmask, + (bfd_byte *) ex->ri_gprmask); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_pad, + (bfd_byte *) ex->ri_pad); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[0], + (bfd_byte *) ex->ri_cprmask[0]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[1], + (bfd_byte *) ex->ri_cprmask[1]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[2], + (bfd_byte *) ex->ri_cprmask[2]); + bfd_h_put_32 (abfd, (bfd_vma) in->ri_cprmask[3], + (bfd_byte *) ex->ri_cprmask[3]); + bfd_h_put_64 (abfd, (bfd_vma) in->ri_gp_value, + (bfd_byte *) ex->ri_gp_value); +} + +/* Swap an entry in a .gptab section. Note that these routines rely + on the equivalence of the two elements of the union. */ + +static void +bfd_mips_elf32_swap_gptab_in (abfd, ex, in) + bfd *abfd; + const Elf32_External_gptab *ex; + Elf32_gptab *in; +{ + in->gt_entry.gt_g_value = bfd_h_get_32 (abfd, ex->gt_entry.gt_g_value); + in->gt_entry.gt_bytes = bfd_h_get_32 (abfd, ex->gt_entry.gt_bytes); +} + +static void +bfd_mips_elf32_swap_gptab_out (abfd, in, ex) + bfd *abfd; + const Elf32_gptab *in; + Elf32_External_gptab *ex; +{ + bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, + ex->gt_entry.gt_g_value); + bfd_h_put_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, + ex->gt_entry.gt_bytes); +} + +static void +bfd_elf32_swap_compact_rel_out (abfd, in, ex) + bfd *abfd; + const Elf32_compact_rel *in; + Elf32_External_compact_rel *ex; +{ + bfd_h_put_32 (abfd, (bfd_vma) in->id1, ex->id1); + bfd_h_put_32 (abfd, (bfd_vma) in->num, ex->num); + bfd_h_put_32 (abfd, (bfd_vma) in->id2, ex->id2); + bfd_h_put_32 (abfd, (bfd_vma) in->offset, ex->offset); + bfd_h_put_32 (abfd, (bfd_vma) in->reserved0, ex->reserved0); + bfd_h_put_32 (abfd, (bfd_vma) in->reserved1, ex->reserved1); +} + +static void +bfd_elf32_swap_crinfo_out (abfd, in, ex) + bfd *abfd; + const Elf32_crinfo *in; + Elf32_External_crinfo *ex; +{ + unsigned long l; + + l = (((in->ctype & CRINFO_CTYPE) << CRINFO_CTYPE_SH) + | ((in->rtype & CRINFO_RTYPE) << CRINFO_RTYPE_SH) + | ((in->dist2to & CRINFO_DIST2TO) << CRINFO_DIST2TO_SH) + | ((in->relvaddr & CRINFO_RELVADDR) << CRINFO_RELVADDR_SH)); + bfd_h_put_32 (abfd, (bfd_vma) l, ex->info); + bfd_h_put_32 (abfd, (bfd_vma) in->konst, ex->konst); + bfd_h_put_32 (abfd, (bfd_vma) in->vaddr, ex->vaddr); +} + +/* Swap in an options header. */ + +void +bfd_mips_elf_swap_options_in (abfd, ex, in) + bfd *abfd; + const Elf_External_Options *ex; + Elf_Internal_Options *in; +{ + in->kind = bfd_h_get_8 (abfd, ex->kind); + in->size = bfd_h_get_8 (abfd, ex->size); + in->section = bfd_h_get_16 (abfd, ex->section); + in->info = bfd_h_get_32 (abfd, ex->info); +} + +/* Swap out an options header. */ + +void +bfd_mips_elf_swap_options_out (abfd, in, ex) + bfd *abfd; + const Elf_Internal_Options *in; + Elf_External_Options *ex; +{ + bfd_h_put_8 (abfd, in->kind, ex->kind); + bfd_h_put_8 (abfd, in->size, ex->size); + bfd_h_put_16 (abfd, in->section, ex->section); + bfd_h_put_32 (abfd, in->info, ex->info); +} + +/* Determine whether a symbol is global for the purposes of splitting + the symbol table into global symbols and local symbols. At least + on Irix 5, this split must be between section symbols and all other + symbols. On most ELF targets the split is between static symbols + and externally visible symbols. */ + +/*ARGSUSED*/ +static boolean +mips_elf_sym_is_global (abfd, sym) + bfd *abfd; + asymbol *sym; +{ + return (sym->flags & BSF_SECTION_SYM) == 0 ? true : false; +} + +/* Set the right machine number for a MIPS ELF file. This is used for + both the 32-bit and the 64-bit ABI. */ + +boolean +_bfd_mips_elf_object_p (abfd) + bfd *abfd; +{ + bfd_default_set_arch_mach (abfd, bfd_arch_mips, + elf_mips_mach (elf_elfheader (abfd)->e_flags)); + return true; +} + +/* Set the right machine number for a 32-bit MIPS ELF file. */ + +static boolean +mips_elf32_object_p (abfd) + bfd *abfd; +{ + /* Irix 5 is broken. Object file symbol tables are not always + sorted correctly such that local symbols precede global symbols, + and the sh_info field in the symbol table is not always right. */ + elf_bad_symtab (abfd) = true; + + return _bfd_mips_elf_object_p (abfd); +} + +/* The final processing done just before writing out a MIPS ELF object + file. This gets the MIPS architecture right based on the machine + number. This is used by both the 32-bit and the 64-bit ABI. */ + +/*ARGSUSED*/ +void +_bfd_mips_elf_final_write_processing (abfd, linker) + bfd *abfd; + boolean linker; +{ + unsigned long val; + unsigned int i; + Elf_Internal_Shdr **hdrpp; + const char *name; + asection *sec; + + switch (bfd_get_mach (abfd)) + { + default: + case bfd_mach_mips3000: + val = E_MIPS_ARCH_1; + break; + + case bfd_mach_mips3900: + val = E_MIPS_ARCH_1 | E_MIPS_MACH_3900; + break; + + case bfd_mach_mips6000: + val = E_MIPS_ARCH_2; + break; + + case bfd_mach_mips4000: + case bfd_mach_mips4300: + val = E_MIPS_ARCH_3; + break; + + case bfd_mach_mips4010: + val = E_MIPS_ARCH_3 | E_MIPS_MACH_4010; + break; + + case bfd_mach_mips4100: + val = E_MIPS_ARCH_3 | E_MIPS_MACH_4100; + break; + + case bfd_mach_mips4111: + val = E_MIPS_ARCH_3 | E_MIPS_MACH_4111; + break; + + case bfd_mach_mips4650: + val = E_MIPS_ARCH_3 | E_MIPS_MACH_4650; + break; + + case bfd_mach_mips8000: + val = E_MIPS_ARCH_4; + break; + } + + elf_elfheader (abfd)->e_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); + elf_elfheader (abfd)->e_flags |= val; + + /* Set the sh_info field for .gptab sections and other appropriate + info for each special section. */ + for (i = 1, hdrpp = elf_elfsections (abfd) + 1; + i < elf_elfheader (abfd)->e_shnum; + i++, hdrpp++) + { + switch ((*hdrpp)->sh_type) + { + case SHT_MIPS_LIBLIST: + sec = bfd_get_section_by_name (abfd, ".dynstr"); + if (sec != NULL) + (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; + break; + + case SHT_MIPS_GPTAB: + BFD_ASSERT ((*hdrpp)->bfd_section != NULL); + name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); + BFD_ASSERT (name != NULL + && strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0); + sec = bfd_get_section_by_name (abfd, name + sizeof ".gptab" - 1); + BFD_ASSERT (sec != NULL); + (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; + break; + + case SHT_MIPS_CONTENT: + BFD_ASSERT ((*hdrpp)->bfd_section != NULL); + name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); + BFD_ASSERT (name != NULL + && strncmp (name, ".MIPS.content", + sizeof ".MIPS.content" - 1) == 0); + sec = bfd_get_section_by_name (abfd, + name + sizeof ".MIPS.content" - 1); + BFD_ASSERT (sec != NULL); + (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; + break; + + case SHT_MIPS_SYMBOL_LIB: + sec = bfd_get_section_by_name (abfd, ".dynsym"); + if (sec != NULL) + (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; + sec = bfd_get_section_by_name (abfd, ".liblist"); + if (sec != NULL) + (*hdrpp)->sh_info = elf_section_data (sec)->this_idx; + break; + + case SHT_MIPS_EVENTS: + BFD_ASSERT ((*hdrpp)->bfd_section != NULL); + name = bfd_get_section_name (abfd, (*hdrpp)->bfd_section); + BFD_ASSERT (name != NULL); + if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0) + sec = bfd_get_section_by_name (abfd, + name + sizeof ".MIPS.events" - 1); + else + { + BFD_ASSERT (strncmp (name, ".MIPS.post_rel", + sizeof ".MIPS.post_rel" - 1) == 0); + sec = bfd_get_section_by_name (abfd, + (name + + sizeof ".MIPS.post_rel" - 1)); + } + BFD_ASSERT (sec != NULL); + (*hdrpp)->sh_link = elf_section_data (sec)->this_idx; + break; + + } + } +} + +/* Function to keep MIPS specific file flags like as EF_MIPS_PIC. */ + +boolean +_bfd_mips_elf_set_private_flags (abfd, flags) + bfd *abfd; + flagword flags; +{ + BFD_ASSERT (!elf_flags_init (abfd) + || elf_elfheader (abfd)->e_flags == flags); + + elf_elfheader (abfd)->e_flags = flags; + elf_flags_init (abfd) = true; + return true; +} + +/* Copy backend specific data from one object module to another */ + +boolean +_bfd_mips_elf_copy_private_bfd_data (ibfd, obfd) + bfd *ibfd; + bfd *obfd; +{ + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return true; + + BFD_ASSERT (!elf_flags_init (obfd) + || (elf_elfheader (obfd)->e_flags + == elf_elfheader (ibfd)->e_flags)); + + elf_gp (obfd) = elf_gp (ibfd); + elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; + elf_flags_init (obfd) = true; + return true; +} + +/* Merge backend specific data from an object file to the output + object file when linking. */ + +boolean +_bfd_mips_elf_merge_private_bfd_data (ibfd, obfd) + bfd *ibfd; + bfd *obfd; +{ + flagword old_flags; + flagword new_flags; + boolean ok; + + /* Check if we have the same endianess */ + if (ibfd->xvec->byteorder != obfd->xvec->byteorder + && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) + { + const char *msg; + + if (bfd_big_endian (ibfd)) + msg = _("%s: compiled for a big endian system and target is little endian"); + else + msg = _("%s: compiled for a little endian system and target is big endian"); + + (*_bfd_error_handler) (msg, bfd_get_filename (ibfd)); + + bfd_set_error (bfd_error_wrong_format); + return false; + } + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return true; + + new_flags = elf_elfheader (ibfd)->e_flags; + elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER; + old_flags = elf_elfheader (obfd)->e_flags; + + if (! elf_flags_init (obfd)) + { + elf_flags_init (obfd) = true; + elf_elfheader (obfd)->e_flags = new_flags; + + if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) + && bfd_get_arch_info (obfd)->the_default) + { + if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), + bfd_get_mach (ibfd))) + return false; + } + + return true; + } + + /* Check flag compatibility. */ + + new_flags &= ~EF_MIPS_NOREORDER; + old_flags &= ~EF_MIPS_NOREORDER; + + if (new_flags == old_flags) + return true; + + ok = true; + + if ((new_flags & EF_MIPS_PIC) != (old_flags & EF_MIPS_PIC)) + { + new_flags &= ~EF_MIPS_PIC; + old_flags &= ~EF_MIPS_PIC; + (*_bfd_error_handler) + (_("%s: linking PIC files with non-PIC files"), + bfd_get_filename (ibfd)); + ok = false; + } + + if ((new_flags & EF_MIPS_CPIC) != (old_flags & EF_MIPS_CPIC)) + { + new_flags &= ~EF_MIPS_CPIC; + old_flags &= ~EF_MIPS_CPIC; + (*_bfd_error_handler) + (_("%s: linking abicalls files with non-abicalls files"), + bfd_get_filename (ibfd)); + ok = false; + } + + /* Compare the ISA's. */ + if ((new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH)) + != (old_flags & (EF_MIPS_ARCH | EF_MIPS_MACH))) + { + int new_mach = new_flags & EF_MIPS_MACH; + int old_mach = old_flags & EF_MIPS_MACH; + int new_isa = elf_mips_isa (new_flags); + int old_isa = elf_mips_isa (old_flags); + + /* If either has no machine specified, just compare the general isa's. + Some combinations of machines are ok, if the isa's match. */ + if (! new_mach + || ! old_mach + || new_mach == old_mach + ) + { + /* Don't warn about mixing -mips1 and -mips2 code, or mixing -mips3 + and -mips4 code. They will normally use the same data sizes and + calling conventions. */ + + if ((new_isa == 1 || new_isa == 2) + ? (old_isa != 1 && old_isa != 2) + : (old_isa == 1 || old_isa == 2)) + { + (*_bfd_error_handler) + (_("%s: ISA mismatch (-mips%d) with previous modules (-mips%d)"), + bfd_get_filename (ibfd), new_isa, old_isa); + ok = false; + } + } + + else + { + (*_bfd_error_handler) + (_("%s: ISA mismatch (%d) with previous modules (%d)"), + bfd_get_filename (ibfd), + elf_mips_mach (new_flags), + elf_mips_mach (old_flags)); + ok = false; + } + + new_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); + old_flags &= ~ (EF_MIPS_ARCH | EF_MIPS_MACH); + } + + /* Compare ABI's */ + if ((new_flags & EF_MIPS_ABI) != (old_flags & EF_MIPS_ABI)) + { + /* Only error if both are set (to different values). */ + if ((new_flags & EF_MIPS_ABI) + && (old_flags & EF_MIPS_ABI)) + { + (*_bfd_error_handler) + (_("%s: ABI mismatch: linking %s module with previous %s modules"), + bfd_get_filename (ibfd), + elf_mips_abi_name (new_flags), + elf_mips_abi_name (old_flags)); + ok = false; + } + new_flags &= ~EF_MIPS_ABI; + old_flags &= ~EF_MIPS_ABI; + } + + /* Warn about any other mismatches */ + if (new_flags != old_flags) + { + (*_bfd_error_handler) + (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), + bfd_get_filename (ibfd), (unsigned long) new_flags, + (unsigned long) old_flags); + ok = false; + } + + if (! ok) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + + return true; +} + +static boolean +_bfd_mips_elf_print_private_bfd_data (abfd, ptr) + bfd *abfd; + PTR ptr; +{ + FILE *file = (FILE *) ptr; + + BFD_ASSERT (abfd != NULL && ptr != NULL); + + /* Print normal ELF private data. */ + _bfd_elf_print_private_bfd_data (abfd, ptr); + + /* xgettext:c-format */ + fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags); + + if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32) + fprintf (file, _ (" [abi=O32]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O64) + fprintf (file, _ (" [abi=O64]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32) + fprintf (file, _ (" [abi=EABI32]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI64) + fprintf (file, _ (" [abi=EABI64]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI)) + fprintf (file, _ (" [abi unknown]")); + else + fprintf (file, _ (" [no abi set]")); + + if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1) + fprintf (file, _ (" [mips1]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2) + fprintf (file, _ (" [mips2]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_3) + fprintf (file, _ (" [mips3]")); + else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_4) + fprintf (file, _ (" [mips4]")); + else + fprintf (file, _ (" [unknown ISA]")); + + if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE) + fprintf (file, _ (" [32bitmode]")); + else + fprintf (file, _ (" [not 32bitmode]")); + + fputc ('\n', file); + + return true; +} + +/* Handle a MIPS specific section when reading an object file. This + is called when elfcode.h finds a section with an unknown type. + This routine supports both the 32-bit and 64-bit ELF ABI. + + FIXME: We need to handle the SHF_MIPS_GPREL flag, but I'm not sure + how to. */ + +boolean +_bfd_mips_elf_section_from_shdr (abfd, hdr, name) + bfd *abfd; + Elf_Internal_Shdr *hdr; + const char *name; +{ + flagword flags = 0; + + /* There ought to be a place to keep ELF backend specific flags, but + at the moment there isn't one. We just keep track of the + sections by their name, instead. Fortunately, the ABI gives + suggested names for all the MIPS specific sections, so we will + probably get away with this. */ + switch (hdr->sh_type) + { + case SHT_MIPS_LIBLIST: + if (strcmp (name, ".liblist") != 0) + return false; + break; + case SHT_MIPS_MSYM: + if (strcmp (name, ".msym") != 0) + return false; + break; + case SHT_MIPS_CONFLICT: + if (strcmp (name, ".conflict") != 0) + return false; + break; + case SHT_MIPS_GPTAB: + if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) != 0) + return false; + break; + case SHT_MIPS_UCODE: + if (strcmp (name, ".ucode") != 0) + return false; + break; + case SHT_MIPS_DEBUG: + if (strcmp (name, ".mdebug") != 0) + return false; + flags = SEC_DEBUGGING; + break; + case SHT_MIPS_REGINFO: + if (strcmp (name, ".reginfo") != 0 + || hdr->sh_size != sizeof (Elf32_External_RegInfo)) + return false; + flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE); + break; + case SHT_MIPS_IFACE: + if (strcmp (name, ".MIPS.interfaces") != 0) + return false; + break; + case SHT_MIPS_CONTENT: + if (strncmp (name, ".MIPS.content", sizeof ".MIPS.content" - 1) != 0) + return false; + break; + case SHT_MIPS_OPTIONS: + if (strcmp (name, ".options") != 0 + && strcmp (name, ".MIPS.options") != 0) + return false; + break; + case SHT_MIPS_DWARF: + if (strncmp (name, ".debug_", sizeof ".debug_" - 1) != 0) + return false; + break; + case SHT_MIPS_SYMBOL_LIB: + if (strcmp (name, ".MIPS.symlib") != 0) + return false; + break; + case SHT_MIPS_EVENTS: + if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) != 0 + && strncmp (name, ".MIPS.post_rel", + sizeof ".MIPS.post_rel" - 1) != 0) + return false; + break; + default: + return false; + } + + if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) + return false; + + if (flags) + { + if (! bfd_set_section_flags (abfd, hdr->bfd_section, + (bfd_get_section_flags (abfd, + hdr->bfd_section) + | flags))) + return false; + } + + return true; +} + +/* Handle a 32-bit MIPS ELF specific section. */ + +static boolean +mips_elf32_section_from_shdr (abfd, hdr, name) + bfd *abfd; + Elf_Internal_Shdr *hdr; + char *name; +{ + if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name)) + return false; + + /* FIXME: We should record sh_info for a .gptab section. */ + + /* For a .reginfo section, set the gp value in the tdata information + from the contents of this section. We need the gp value while + processing relocs, so we just get it now. The .reginfo section + is not used in the 64-bit MIPS ELF ABI. */ + if (hdr->sh_type == SHT_MIPS_REGINFO) + { + Elf32_External_RegInfo ext; + Elf32_RegInfo s; + + if (! bfd_get_section_contents (abfd, hdr->bfd_section, (PTR) &ext, + (file_ptr) 0, sizeof ext)) + return false; + bfd_mips_elf32_swap_reginfo_in (abfd, &ext, &s); + elf_gp (abfd) = s.ri_gp_value; + } + + /* For a SHT_MIPS_OPTIONS section, look for a ODK_REGINFO entry, and + set the gp value based on what we find. We may see both + SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS/ODK_REGINFO; in that case, + they should agree. */ + if (hdr->sh_type == SHT_MIPS_OPTIONS) + { + bfd_byte *contents, *l, *lend; + + contents = (bfd_byte *) bfd_malloc (hdr->sh_size); + if (contents == NULL) + return false; + if (! bfd_get_section_contents (abfd, hdr->bfd_section, contents, + (file_ptr) 0, hdr->sh_size)) + { + free (contents); + return false; + } + l = contents; + lend = contents + hdr->sh_size; + while (l + sizeof (Elf_External_Options) <= lend) + { + Elf_Internal_Options intopt; + + bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, + &intopt); + if (intopt.kind == ODK_REGINFO) + { + Elf32_RegInfo intreg; + + bfd_mips_elf32_swap_reginfo_in + (abfd, + ((Elf32_External_RegInfo *) + (l + sizeof (Elf_External_Options))), + &intreg); + elf_gp (abfd) = intreg.ri_gp_value; + } + l += intopt.size; + } + free (contents); + } + + return true; +} + +/* Set the correct type for a MIPS ELF section. We do this by the + section name, which is a hack, but ought to work. This routine is + used by both the 32-bit and the 64-bit ABI. */ + +boolean +_bfd_mips_elf_fake_sections (abfd, hdr, sec) + bfd *abfd; + Elf32_Internal_Shdr *hdr; + asection *sec; +{ + register const char *name; + + name = bfd_get_section_name (abfd, sec); + + if (strcmp (name, ".liblist") == 0) + { + hdr->sh_type = SHT_MIPS_LIBLIST; + hdr->sh_info = sec->_raw_size / sizeof (Elf32_Lib); + /* The sh_link field is set in final_write_processing. */ + } + else if (strcmp (name, ".msym") == 0) + { + hdr->sh_type = SHT_MIPS_MSYM; + hdr->sh_entsize = 8; + /* FIXME: Set the sh_info field. */ + } + else if (strcmp (name, ".conflict") == 0) + hdr->sh_type = SHT_MIPS_CONFLICT; + else if (strncmp (name, ".gptab.", sizeof ".gptab." - 1) == 0) + { + hdr->sh_type = SHT_MIPS_GPTAB; + hdr->sh_entsize = sizeof (Elf32_External_gptab); + /* The sh_info field is set in final_write_processing. */ + } + else if (strcmp (name, ".ucode") == 0) + hdr->sh_type = SHT_MIPS_UCODE; + else if (strcmp (name, ".mdebug") == 0) + { + hdr->sh_type = SHT_MIPS_DEBUG; + /* In a shared object on Irix 5.3, the .mdebug section has an + entsize of 0. FIXME: Does this matter? */ + if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) + hdr->sh_entsize = 0; + else + hdr->sh_entsize = 1; + } + else if (strcmp (name, ".reginfo") == 0) + { + hdr->sh_type = SHT_MIPS_REGINFO; + /* In a shared object on Irix 5.3, the .reginfo section has an + entsize of 0x18. FIXME: Does this matter? */ + if (SGI_COMPAT (abfd) && (abfd->flags & DYNAMIC) != 0) + hdr->sh_entsize = sizeof (Elf32_External_RegInfo); + else + hdr->sh_entsize = 1; + } + else if (SGI_COMPAT (abfd) + && (strcmp (name, ".hash") == 0 + || strcmp (name, ".dynamic") == 0 + || strcmp (name, ".dynstr") == 0)) + { + hdr->sh_entsize = 0; +#if 0 + /* This isn't how the Irix 6 linker behaves. */ + hdr->sh_info = SIZEOF_MIPS_DYNSYM_SECNAMES; +#endif + } + else if (strcmp (name, ".got") == 0 + || strcmp (name, ".sdata") == 0 + || strcmp (name, ".sbss") == 0 + || strcmp (name, ".lit4") == 0 + || strcmp (name, ".lit8") == 0) + hdr->sh_flags |= SHF_MIPS_GPREL; + else if (strcmp (name, ".MIPS.interfaces") == 0) + { + hdr->sh_type = SHT_MIPS_IFACE; + hdr->sh_flags |= SHF_MIPS_NOSTRIP; + } + else if (strcmp (name, ".MIPS.content") == 0) + { + hdr->sh_type = SHT_MIPS_CONTENT; + /* The sh_info field is set in final_write_processing. */ + } + else if (strcmp (name, ".options") == 0 + || strcmp (name, ".MIPS.options") == 0) + { + hdr->sh_type = SHT_MIPS_OPTIONS; + hdr->sh_entsize = 1; + hdr->sh_flags |= SHF_MIPS_NOSTRIP; + } + else if (strncmp (name, ".debug_", sizeof ".debug_" - 1) == 0) + hdr->sh_type = SHT_MIPS_DWARF; + else if (strcmp (name, ".MIPS.symlib") == 0) + { + hdr->sh_type = SHT_MIPS_SYMBOL_LIB; + /* The sh_link and sh_info fields are set in + final_write_processing. */ + } + else if (strncmp (name, ".MIPS.events", sizeof ".MIPS.events" - 1) == 0 + || strncmp (name, ".MIPS.post_rel", + sizeof ".MIPS.post_rel" - 1) == 0) + { + hdr->sh_type = SHT_MIPS_EVENTS; + hdr->sh_flags |= SHF_MIPS_NOSTRIP; + /* The sh_link field is set in final_write_processing. */ + } + + return true; +} + +/* Given a BFD section, try to locate the corresponding ELF section + index. This is used by both the 32-bit and the 64-bit ABI. + Actually, it's not clear to me that the 64-bit ABI supports these, + but for non-PIC objects we will certainly want support for at least + the .scommon section. */ + +boolean +_bfd_mips_elf_section_from_bfd_section (abfd, hdr, sec, retval) + bfd *abfd; + Elf32_Internal_Shdr *hdr; + asection *sec; + int *retval; +{ + if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) + { + *retval = SHN_MIPS_SCOMMON; + return true; + } + if (strcmp (bfd_get_section_name (abfd, sec), ".acommon") == 0) + { + *retval = SHN_MIPS_ACOMMON; + return true; + } + return false; +} + +/* When are writing out the .options or .MIPS.options section, + remember the bytes we are writing out, so that we can install the + GP value in the section_processing routine. */ + +boolean +_bfd_mips_elf_set_section_contents (abfd, section, location, offset, count) + bfd *abfd; + sec_ptr section; + PTR location; + file_ptr offset; + bfd_size_type count; +{ + if (strcmp (section->name, ".options") == 0 + || strcmp (section->name, ".MIPS.options") == 0) + { + bfd_byte *c; + + if (elf_section_data (section) == NULL) + { + section->used_by_bfd = + (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); + if (elf_section_data (section) == NULL) + return false; + } + c = (bfd_byte *) elf_section_data (section)->tdata; + if (c == NULL) + { + bfd_size_type size; + + if (section->_cooked_size != 0) + size = section->_cooked_size; + else + size = section->_raw_size; + c = (bfd_byte *) bfd_zalloc (abfd, size); + if (c == NULL) + return false; + elf_section_data (section)->tdata = (PTR) c; + } + + memcpy (c + offset, location, count); + } + + return _bfd_elf_set_section_contents (abfd, section, location, offset, + count); +} + +/* Work over a section just before writing it out. This routine is + used by both the 32-bit and the 64-bit ABI. FIXME: We recognize + sections that need the SHF_MIPS_GPREL flag by name; there has to be + a better way. */ + +boolean +_bfd_mips_elf_section_processing (abfd, hdr) + bfd *abfd; + Elf_Internal_Shdr *hdr; +{ + if (hdr->bfd_section != NULL) + { + const char *name = bfd_get_section_name (abfd, hdr->bfd_section); + + if (strcmp (name, ".sdata") == 0) + { + hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; + hdr->sh_type = SHT_PROGBITS; + } + else if (strcmp (name, ".sbss") == 0) + { + hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; + hdr->sh_type = SHT_NOBITS; + } + else if (strcmp (name, ".lit8") == 0 + || strcmp (name, ".lit4") == 0) + { + hdr->sh_flags |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; + hdr->sh_type = SHT_PROGBITS; + } + else if (strcmp (name, ".compact_rel") == 0) + { + hdr->sh_flags = 0; + hdr->sh_type = SHT_PROGBITS; + } + else if (strcmp (name, ".rtproc") == 0) + { + if (hdr->sh_addralign != 0 && hdr->sh_entsize == 0) + { + unsigned int adjust; + + adjust = hdr->sh_size % hdr->sh_addralign; + if (adjust != 0) + hdr->sh_size += hdr->sh_addralign - adjust; + } + } + } + + return true; +} + +/* Work over a section just before writing it out. We update the GP + value in the SHT_MIPS_REGINFO and SHT_MIPS_OPTIONS sections based + on the value we are using. */ + +static boolean +mips_elf32_section_processing (abfd, hdr) + bfd *abfd; + Elf32_Internal_Shdr *hdr; +{ + if (hdr->sh_type == SHT_MIPS_REGINFO) + { + bfd_byte buf[4]; + + BFD_ASSERT (hdr->sh_size == sizeof (Elf32_External_RegInfo)); + BFD_ASSERT (hdr->contents == NULL); + + if (bfd_seek (abfd, + hdr->sh_offset + sizeof (Elf32_External_RegInfo) - 4, + SEEK_SET) == -1) + return false; + bfd_h_put_32 (abfd, (bfd_vma) elf_gp (abfd), buf); + if (bfd_write (buf, (bfd_size_type) 1, (bfd_size_type) 4, abfd) != 4) + return false; + } + + if (hdr->sh_type == SHT_MIPS_OPTIONS + && hdr->bfd_section != NULL + && elf_section_data (hdr->bfd_section) != NULL + && elf_section_data (hdr->bfd_section)->tdata != NULL) + { + bfd_byte *contents, *l, *lend; + + /* We stored the section contents in the elf_section_data tdata + field in the set_section_contents routine. We save the + section contents so that we don't have to read them again. + At this point we know that elf_gp is set, so we can look + through the section contents to see if there is an + ODK_REGINFO structure. */ + + contents = (bfd_byte *) elf_section_data (hdr->bfd_section)->tdata; + l = contents; + lend = contents + hdr->sh_size; + while (l + sizeof (Elf_External_Options) <= lend) + { + Elf_Internal_Options intopt; + + bfd_mips_elf_swap_options_in (abfd, (Elf_External_Options *) l, + &intopt); + if (intopt.kind == ODK_REGINFO) + { + bfd_byte buf[4]; + + if (bfd_seek (abfd, + (hdr->sh_offset + + (l - contents) + + sizeof (Elf_External_Options) + + (sizeof (Elf32_External_RegInfo) - 4)), + SEEK_SET) == -1) + return false; + bfd_h_put_32 (abfd, elf_gp (abfd), buf); + if (bfd_write (buf, 1, 4, abfd) != 4) + return false; + } + l += intopt.size; + } + } + + return _bfd_mips_elf_section_processing (abfd, hdr); +} + +/* MIPS ELF uses two common sections. One is the usual one, and the + other is for small objects. All the small objects are kept + together, and then referenced via the gp pointer, which yields + faster assembler code. This is what we use for the small common + section. This approach is copied from ecoff.c. */ +static asection mips_elf_scom_section; +static asymbol mips_elf_scom_symbol; +static asymbol *mips_elf_scom_symbol_ptr; + +/* MIPS ELF also uses an acommon section, which represents an + allocated common symbol which may be overridden by a + definition in a shared library. */ +static asection mips_elf_acom_section; +static asymbol mips_elf_acom_symbol; +static asymbol *mips_elf_acom_symbol_ptr; + +/* The Irix 5 support uses two virtual sections, which represent + text/data symbols defined in dynamic objects. */ +static asection mips_elf_text_section; +static asection *mips_elf_text_section_ptr; +static asymbol mips_elf_text_symbol; +static asymbol *mips_elf_text_symbol_ptr; + +static asection mips_elf_data_section; +static asection *mips_elf_data_section_ptr; +static asymbol mips_elf_data_symbol; +static asymbol *mips_elf_data_symbol_ptr; + +/* Handle the special MIPS section numbers that a symbol may use. + This is used for both the 32-bit and the 64-bit ABI. */ + +void +_bfd_mips_elf_symbol_processing (abfd, asym) + bfd *abfd; + asymbol *asym; +{ + elf_symbol_type *elfsym; + + elfsym = (elf_symbol_type *) asym; + switch (elfsym->internal_elf_sym.st_shndx) + { + case SHN_MIPS_ACOMMON: + /* This section is used in a dynamically linked executable file. + It is an allocated common section. The dynamic linker can + either resolve these symbols to something in a shared + library, or it can just leave them here. For our purposes, + we can consider these symbols to be in a new section. */ + if (mips_elf_acom_section.name == NULL) + { + /* Initialize the acommon section. */ + mips_elf_acom_section.name = ".acommon"; + mips_elf_acom_section.flags = SEC_ALLOC; + mips_elf_acom_section.output_section = &mips_elf_acom_section; + mips_elf_acom_section.symbol = &mips_elf_acom_symbol; + mips_elf_acom_section.symbol_ptr_ptr = &mips_elf_acom_symbol_ptr; + mips_elf_acom_symbol.name = ".acommon"; + mips_elf_acom_symbol.flags = BSF_SECTION_SYM; + mips_elf_acom_symbol.section = &mips_elf_acom_section; + mips_elf_acom_symbol_ptr = &mips_elf_acom_symbol; + } + asym->section = &mips_elf_acom_section; + break; + + case SHN_COMMON: + /* Common symbols less than the GP size are automatically + treated as SHN_MIPS_SCOMMON symbols. */ + if (asym->value > elf_gp_size (abfd)) + break; + /* Fall through. */ + case SHN_MIPS_SCOMMON: + if (mips_elf_scom_section.name == NULL) + { + /* Initialize the small common section. */ + mips_elf_scom_section.name = ".scommon"; + mips_elf_scom_section.flags = SEC_IS_COMMON; + mips_elf_scom_section.output_section = &mips_elf_scom_section; + mips_elf_scom_section.symbol = &mips_elf_scom_symbol; + mips_elf_scom_section.symbol_ptr_ptr = &mips_elf_scom_symbol_ptr; + mips_elf_scom_symbol.name = ".scommon"; + mips_elf_scom_symbol.flags = BSF_SECTION_SYM; + mips_elf_scom_symbol.section = &mips_elf_scom_section; + mips_elf_scom_symbol_ptr = &mips_elf_scom_symbol; + } + asym->section = &mips_elf_scom_section; + asym->value = elfsym->internal_elf_sym.st_size; + break; + + case SHN_MIPS_SUNDEFINED: + asym->section = bfd_und_section_ptr; + break; + +#if 0 /* for SGI_COMPAT */ + case SHN_MIPS_TEXT: + asym->section = mips_elf_text_section_ptr; + break; + + case SHN_MIPS_DATA: + asym->section = mips_elf_data_section_ptr; + break; +#endif + } +} + +/* When creating an Irix 5 executable, we need REGINFO and RTPROC + segments. */ + +static int +mips_elf_additional_program_headers (abfd) + bfd *abfd; +{ + asection *s; + int ret; + + ret = 0; + + if (! SGI_COMPAT (abfd)) + return ret; + + s = bfd_get_section_by_name (abfd, ".reginfo"); + if (s != NULL && (s->flags & SEC_LOAD) != 0) + { + /* We need a PT_MIPS_REGINFO segment. */ + ++ret; + } + + if (bfd_get_section_by_name (abfd, ".dynamic") != NULL + && bfd_get_section_by_name (abfd, ".mdebug") != NULL) + { + /* We need a PT_MIPS_RTPROC segment. */ + ++ret; + } + + return ret; +} + +/* Modify the segment map for an Irix 5 executable. */ + +static boolean +mips_elf_modify_segment_map (abfd) + bfd *abfd; +{ + asection *s; + struct elf_segment_map *m, **pm; + + if (! SGI_COMPAT (abfd)) + return true; + + /* If there is a .reginfo section, we need a PT_MIPS_REGINFO + segment. */ + s = bfd_get_section_by_name (abfd, ".reginfo"); + if (s != NULL && (s->flags & SEC_LOAD) != 0) + { + for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) + if (m->p_type == PT_MIPS_REGINFO) + break; + if (m == NULL) + { + m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); + if (m == NULL) + return false; + + m->p_type = PT_MIPS_REGINFO; + m->count = 1; + m->sections[0] = s; + + /* We want to put it after the PHDR and INTERP segments. */ + pm = &elf_tdata (abfd)->segment_map; + while (*pm != NULL + && ((*pm)->p_type == PT_PHDR + || (*pm)->p_type == PT_INTERP)) + pm = &(*pm)->next; + + m->next = *pm; + *pm = m; + } + } + + /* If there are .dynamic and .mdebug sections, we make a room for + the RTPROC header. FIXME: Rewrite without section names. */ + if (bfd_get_section_by_name (abfd, ".interp") == NULL + && bfd_get_section_by_name (abfd, ".dynamic") != NULL + && bfd_get_section_by_name (abfd, ".mdebug") != NULL) + { + for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) + if (m->p_type == PT_MIPS_RTPROC) + break; + if (m == NULL) + { + m = (struct elf_segment_map *) bfd_zalloc (abfd, sizeof *m); + if (m == NULL) + return false; + + m->p_type = PT_MIPS_RTPROC; + + s = bfd_get_section_by_name (abfd, ".rtproc"); + if (s == NULL) + { + m->count = 0; + m->p_flags = 0; + m->p_flags_valid = 1; + } + else + { + m->count = 1; + m->sections[0] = s; + } + + /* We want to put it after the DYNAMIC segment. */ + pm = &elf_tdata (abfd)->segment_map; + while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC) + pm = &(*pm)->next; + if (*pm != NULL) + pm = &(*pm)->next; + + m->next = *pm; + *pm = m; + } + } + + /* On Irix 5, the PT_DYNAMIC segment includes the .dynamic, .dynstr, + .dynsym, and .hash sections, and everything in between. */ + for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next) + if ((*pm)->p_type == PT_DYNAMIC) + break; + m = *pm; + if (m != NULL + && m->count == 1 + && strcmp (m->sections[0]->name, ".dynamic") == 0) + { + static const char *sec_names[] = + { ".dynamic", ".dynstr", ".dynsym", ".hash" }; + bfd_vma low, high; + unsigned int i, c; + struct elf_segment_map *n; + + low = 0xffffffff; + high = 0; + for (i = 0; i < sizeof sec_names / sizeof sec_names[0]; i++) + { + s = bfd_get_section_by_name (abfd, sec_names[i]); + if (s != NULL && (s->flags & SEC_LOAD) != 0) + { + bfd_size_type sz; + + if (low > s->vma) + low = s->vma; + sz = s->_cooked_size; + if (sz == 0) + sz = s->_raw_size; + if (high < s->vma + sz) + high = s->vma + sz; + } + } + + c = 0; + for (s = abfd->sections; s != NULL; s = s->next) + if ((s->flags & SEC_LOAD) != 0 + && s->vma >= low + && ((s->vma + + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) + <= high)) + ++c; + + n = ((struct elf_segment_map *) + bfd_zalloc (abfd, sizeof *n + (c - 1) * sizeof (asection *))); + if (n == NULL) + return false; + *n = *m; + n->count = c; + + i = 0; + for (s = abfd->sections; s != NULL; s = s->next) + { + if ((s->flags & SEC_LOAD) != 0 + && s->vma >= low + && ((s->vma + + (s->_cooked_size != 0 ? s->_cooked_size : s->_raw_size)) + <= high)) + { + n->sections[i] = s; + ++i; + } + } + + *pm = n; + } + + return true; +} + +/* The structure of the runtime procedure descriptor created by the + loader for use by the static exception system. */ + +typedef struct runtime_pdr { + bfd_vma adr; /* memory address of start of procedure */ + long regmask; /* save register mask */ + long regoffset; /* save register offset */ + long fregmask; /* save floating point register mask */ + long fregoffset; /* save floating point register offset */ + long frameoffset; /* frame size */ + short framereg; /* frame pointer register */ + short pcreg; /* offset or reg of return pc */ + long irpss; /* index into the runtime string table */ + long reserved; + struct exception_info *exception_info;/* pointer to exception array */ +} RPDR, *pRPDR; +#define cbRPDR sizeof(RPDR) +#define rpdNil ((pRPDR) 0) + +/* Swap RPDR (runtime procedure table entry) for output. */ + +static void ecoff_swap_rpdr_out + PARAMS ((bfd *, const RPDR *, struct rpdr_ext *)); + +static void +ecoff_swap_rpdr_out (abfd, in, ex) + bfd *abfd; + const RPDR *in; + struct rpdr_ext *ex; +{ + /* ecoff_put_off was defined in ecoffswap.h. */ + ecoff_put_off (abfd, in->adr, (bfd_byte *) ex->p_adr); + bfd_h_put_32 (abfd, in->regmask, (bfd_byte *) ex->p_regmask); + bfd_h_put_32 (abfd, in->regoffset, (bfd_byte *) ex->p_regoffset); + bfd_h_put_32 (abfd, in->fregmask, (bfd_byte *) ex->p_fregmask); + bfd_h_put_32 (abfd, in->fregoffset, (bfd_byte *) ex->p_fregoffset); + bfd_h_put_32 (abfd, in->frameoffset, (bfd_byte *) ex->p_frameoffset); + + bfd_h_put_16 (abfd, in->framereg, (bfd_byte *) ex->p_framereg); + bfd_h_put_16 (abfd, in->pcreg, (bfd_byte *) ex->p_pcreg); + + bfd_h_put_32 (abfd, in->irpss, (bfd_byte *) ex->p_irpss); +#if 0 /* FIXME */ + ecoff_put_off (abfd, in->exception_info, (bfd_byte *) ex->p_exception_info); +#endif +} + +/* Read ECOFF debugging information from a .mdebug section into a + ecoff_debug_info structure. */ + +boolean +_bfd_mips_elf_read_ecoff_info (abfd, section, debug) + bfd *abfd; + asection *section; + struct ecoff_debug_info *debug; +{ + HDRR *symhdr; + const struct ecoff_debug_swap *swap; + char *ext_hdr = NULL; + + swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; + memset (debug, 0, sizeof(*debug)); + + ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); + if (ext_hdr == NULL && swap->external_hdr_size != 0) + goto error_return; + + if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, + swap->external_hdr_size) + == false) + goto error_return; + + symhdr = &debug->symbolic_header; + (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); + + /* The symbolic header contains absolute file offsets and sizes to + read. */ +#define READ(ptr, offset, count, size, type) \ + if (symhdr->count == 0) \ + debug->ptr = NULL; \ + else \ + { \ + debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ + if (debug->ptr == NULL) \ + goto error_return; \ + if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ + || (bfd_read (debug->ptr, size, symhdr->count, \ + abfd) != size * symhdr->count)) \ + goto error_return; \ + } + + READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); + READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); + READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); + READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); + READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); + READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), + union aux_ext *); + READ (ss, cbSsOffset, issMax, sizeof (char), char *); + READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); + READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); + READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); + READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); +#undef READ + + debug->fdr = NULL; + debug->adjust = NULL; + + return true; + + error_return: + if (ext_hdr != NULL) + free (ext_hdr); + if (debug->line != NULL) + free (debug->line); + if (debug->external_dnr != NULL) + free (debug->external_dnr); + if (debug->external_pdr != NULL) + free (debug->external_pdr); + if (debug->external_sym != NULL) + free (debug->external_sym); + if (debug->external_opt != NULL) + free (debug->external_opt); + if (debug->external_aux != NULL) + free (debug->external_aux); + if (debug->ss != NULL) + free (debug->ss); + if (debug->ssext != NULL) + free (debug->ssext); + if (debug->external_fdr != NULL) + free (debug->external_fdr); + if (debug->external_rfd != NULL) + free (debug->external_rfd); + if (debug->external_ext != NULL) + free (debug->external_ext); + return false; +} + +/* MIPS ELF local labels start with '$', not 'L'. */ + +/*ARGSUSED*/ +static boolean +mips_elf_is_local_label_name (abfd, name) + bfd *abfd; + const char *name; +{ + if (name[0] == '$') + return true; + + /* On Irix 6, the labels go back to starting with '.', so we accept + the generic ELF local label syntax as well. */ + return _bfd_elf_is_local_label_name (abfd, name); +} + +/* MIPS ELF uses a special find_nearest_line routine in order the + handle the ECOFF debugging information. */ + +struct mips_elf_find_line +{ + struct ecoff_debug_info d; + struct ecoff_find_line i; +}; + +boolean +_bfd_mips_elf_find_nearest_line (abfd, section, symbols, offset, filename_ptr, + functionname_ptr, line_ptr) + bfd *abfd; + asection *section; + asymbol **symbols; + bfd_vma offset; + const char **filename_ptr; + const char **functionname_ptr; + unsigned int *line_ptr; +{ + asection *msec; + + if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset, + filename_ptr, functionname_ptr, + line_ptr)) + return true; + + if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, + filename_ptr, functionname_ptr, + line_ptr)) + return true; + + msec = bfd_get_section_by_name (abfd, ".mdebug"); + if (msec != NULL) + { + flagword origflags; + struct mips_elf_find_line *fi; + const struct ecoff_debug_swap * const swap = + get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; + + /* If we are called during a link, mips_elf_final_link may have + cleared the SEC_HAS_CONTENTS field. We force it back on here + if appropriate (which it normally will be). */ + origflags = msec->flags; + if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) + msec->flags |= SEC_HAS_CONTENTS; + + fi = elf_tdata (abfd)->find_line_info; + if (fi == NULL) + { + bfd_size_type external_fdr_size; + char *fraw_src; + char *fraw_end; + struct fdr *fdr_ptr; + + fi = ((struct mips_elf_find_line *) + bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); + if (fi == NULL) + { + msec->flags = origflags; + return false; + } + + if (! _bfd_mips_elf_read_ecoff_info (abfd, msec, &fi->d)) + { + msec->flags = origflags; + return false; + } + + /* Swap in the FDR information. */ + fi->d.fdr = ((struct fdr *) + bfd_alloc (abfd, + (fi->d.symbolic_header.ifdMax * + sizeof (struct fdr)))); + if (fi->d.fdr == NULL) + { + msec->flags = origflags; + return false; + } + external_fdr_size = swap->external_fdr_size; + fdr_ptr = fi->d.fdr; + fraw_src = (char *) fi->d.external_fdr; + fraw_end = (fraw_src + + fi->d.symbolic_header.ifdMax * external_fdr_size); + for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) + (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); + + elf_tdata (abfd)->find_line_info = fi; + + /* Note that we don't bother to ever free this information. + find_nearest_line is either called all the time, as in + objdump -l, so the information should be saved, or it is + rarely called, as in ld error messages, so the memory + wasted is unimportant. Still, it would probably be a + good idea for free_cached_info to throw it away. */ + } + + if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, + &fi->i, filename_ptr, functionname_ptr, + line_ptr)) + { + msec->flags = origflags; + return true; + } + + msec->flags = origflags; + } + + /* Fall back on the generic ELF find_nearest_line routine. */ + + return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, + filename_ptr, functionname_ptr, + line_ptr); +} + + /* The mips16 compiler uses a couple of special sections to handle + floating point arguments. + + Section names that look like .mips16.fn.FNNAME contain stubs that + copy floating point arguments from the fp regs to the gp regs and + then jump to FNNAME. If any 32 bit function calls FNNAME, the + call should be redirected to the stub instead. If no 32 bit + function calls FNNAME, the stub should be discarded. We need to + consider any reference to the function, not just a call, because + if the address of the function is taken we will need the stub, + since the address might be passed to a 32 bit function. + + Section names that look like .mips16.call.FNNAME contain stubs + that copy floating point arguments from the gp regs to the fp + regs and then jump to FNNAME. If FNNAME is a 32 bit function, + then any 16 bit function that calls FNNAME should be redirected + to the stub instead. If FNNAME is not a 32 bit function, the + stub should be discarded. + + .mips16.call.fp.FNNAME sections are similar, but contain stubs + which call FNNAME and then copy the return value from the fp regs + to the gp regs. These stubs store the return value in $18 while + calling FNNAME; any function which might call one of these stubs + must arrange to save $18 around the call. (This case is not + needed for 32 bit functions that call 16 bit functions, because + 16 bit functions always return floating point values in both + $f0/$f1 and $2/$3.) + + Note that in all cases FNNAME might be defined statically. + Therefore, FNNAME is not used literally. Instead, the relocation + information will indicate which symbol the section is for. + + We record any stubs that we find in the symbol table. */ + +#define FN_STUB ".mips16.fn." +#define CALL_STUB ".mips16.call." +#define CALL_FP_STUB ".mips16.call.fp." + +/* The MIPS ELF linker needs additional information for each symbol in + the global hash table. */ + +struct mips_elf_link_hash_entry +{ + struct elf_link_hash_entry root; + + /* External symbol information. */ + EXTR esym; + + /* Number of MIPS_32 or MIPS_REL32 relocs against this symbol. */ + unsigned int mips_32_relocs; + + /* If there is a stub that 32 bit functions should use to call this + 16 bit function, this points to the section containing the stub. */ + asection *fn_stub; + + /* Whether we need the fn_stub; this is set if this symbol appears + in any relocs other than a 16 bit call. */ + boolean need_fn_stub; + + /* If there is a stub that 16 bit functions should use to call this + 32 bit function, this points to the section containing the stub. */ + asection *call_stub; + + /* This is like the call_stub field, but it is used if the function + being called returns a floating point value. */ + asection *call_fp_stub; +}; + +/* MIPS ELF linker hash table. */ + +struct mips_elf_link_hash_table +{ + struct elf_link_hash_table root; +#if 0 + /* We no longer use this. */ + /* String section indices for the dynamic section symbols. */ + bfd_size_type dynsym_sec_strindex[SIZEOF_MIPS_DYNSYM_SECNAMES]; +#endif + /* The number of .rtproc entries. */ + bfd_size_type procedure_count; + /* The size of the .compact_rel section (if SGI_COMPAT). */ + bfd_size_type compact_rel_size; + /* This flag indicates that the value of DT_MIPS_RLD_MAP dynamic + entry is set to the address of __rld_obj_head as in Irix 5. */ + boolean use_rld_obj_head; + /* This is the value of the __rld_map or __rld_obj_head symbol. */ + bfd_vma rld_value; + /* This is set if we see any mips16 stub sections. */ + boolean mips16_stubs_seen; +}; + +/* Look up an entry in a MIPS ELF linker hash table. */ + +#define mips_elf_link_hash_lookup(table, string, create, copy, follow) \ + ((struct mips_elf_link_hash_entry *) \ + elf_link_hash_lookup (&(table)->root, (string), (create), \ + (copy), (follow))) + +/* Traverse a MIPS ELF linker hash table. */ + +#define mips_elf_link_hash_traverse(table, func, info) \ + (elf_link_hash_traverse \ + (&(table)->root, \ + (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ + (info))) + +/* Get the MIPS ELF linker hash table from a link_info structure. */ + +#define mips_elf_hash_table(p) \ + ((struct mips_elf_link_hash_table *) ((p)->hash)) + +static boolean mips_elf_output_extsym + PARAMS ((struct mips_elf_link_hash_entry *, PTR)); + +/* Create an entry in a MIPS ELF linker hash table. */ + +static struct bfd_hash_entry * +mips_elf_link_hash_newfunc (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; +{ + struct mips_elf_link_hash_entry *ret = + (struct mips_elf_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == (struct mips_elf_link_hash_entry *) NULL) + ret = ((struct mips_elf_link_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct mips_elf_link_hash_entry))); + if (ret == (struct mips_elf_link_hash_entry *) NULL) + return (struct bfd_hash_entry *) ret; + + /* Call the allocation method of the superclass. */ + ret = ((struct mips_elf_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); + if (ret != (struct mips_elf_link_hash_entry *) NULL) + { + /* Set local fields. */ + memset (&ret->esym, 0, sizeof (EXTR)); + /* We use -2 as a marker to indicate that the information has + not been set. -1 means there is no associated ifd. */ + ret->esym.ifd = -2; + ret->mips_32_relocs = 0; + ret->fn_stub = NULL; + ret->need_fn_stub = false; + ret->call_stub = NULL; + ret->call_fp_stub = NULL; + } + + return (struct bfd_hash_entry *) ret; +} + +/* Create a MIPS ELF linker hash table. */ + +static struct bfd_link_hash_table * +mips_elf_link_hash_table_create (abfd) + bfd *abfd; +{ + struct mips_elf_link_hash_table *ret; + + ret = ((struct mips_elf_link_hash_table *) + bfd_alloc (abfd, sizeof (struct mips_elf_link_hash_table))); + if (ret == (struct mips_elf_link_hash_table *) NULL) + return NULL; + + if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, + mips_elf_link_hash_newfunc)) + { + bfd_release (abfd, ret); + return NULL; + } + +#if 0 + /* We no longer use this. */ + for (i = 0; i < SIZEOF_MIPS_DYNSYM_SECNAMES; i++) + ret->dynsym_sec_strindex[i] = (bfd_size_type) -1; +#endif + ret->procedure_count = 0; + ret->compact_rel_size = 0; + ret->use_rld_obj_head = false; + ret->rld_value = 0; + ret->mips16_stubs_seen = false; + + return &ret->root.root; +} + +/* Hook called by the linker routine which adds symbols from an object + file. We must handle the special MIPS section numbers here. */ + +/*ARGSUSED*/ +static boolean +mips_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) + bfd *abfd; + struct bfd_link_info *info; + const Elf_Internal_Sym *sym; + const char **namep; + flagword *flagsp; + asection **secp; + bfd_vma *valp; +{ + if (SGI_COMPAT (abfd) + && (abfd->flags & DYNAMIC) != 0 + && strcmp (*namep, "_rld_new_interface") == 0) + { + /* Skip Irix 5 rld entry name. */ + *namep = NULL; + return true; + } + + switch (sym->st_shndx) + { + case SHN_COMMON: + /* Common symbols less than the GP size are automatically + treated as SHN_MIPS_SCOMMON symbols. */ + if (sym->st_size > elf_gp_size (abfd)) + break; + /* Fall through. */ + case SHN_MIPS_SCOMMON: + *secp = bfd_make_section_old_way (abfd, ".scommon"); + (*secp)->flags |= SEC_IS_COMMON; + *valp = sym->st_size; + break; + + case SHN_MIPS_TEXT: + /* This section is used in a shared object. */ + if (mips_elf_text_section_ptr == NULL) + { + /* Initialize the section. */ + mips_elf_text_section.name = ".text"; + mips_elf_text_section.flags = SEC_NO_FLAGS; + mips_elf_text_section.output_section = NULL; + mips_elf_text_section.symbol = &mips_elf_text_symbol; + mips_elf_text_section.symbol_ptr_ptr = &mips_elf_text_symbol_ptr; + mips_elf_text_symbol.name = ".text"; + mips_elf_text_symbol.flags = BSF_SECTION_SYM; + mips_elf_text_symbol.section = &mips_elf_text_section; + mips_elf_text_symbol_ptr = &mips_elf_text_symbol; + mips_elf_text_section_ptr = &mips_elf_text_section; + } + /* This code used to do *secp = bfd_und_section_ptr if + info->shared. I don't know why, and that doesn't make sense, + so I took it out. */ + *secp = mips_elf_text_section_ptr; + break; + + case SHN_MIPS_ACOMMON: + /* Fall through. XXX Can we treat this as allocated data? */ + case SHN_MIPS_DATA: + /* This section is used in a shared object. */ + if (mips_elf_data_section_ptr == NULL) + { + /* Initialize the section. */ + mips_elf_data_section.name = ".data"; + mips_elf_data_section.flags = SEC_NO_FLAGS; + mips_elf_data_section.output_section = NULL; + mips_elf_data_section.symbol = &mips_elf_data_symbol; + mips_elf_data_section.symbol_ptr_ptr = &mips_elf_data_symbol_ptr; + mips_elf_data_symbol.name = ".data"; + mips_elf_data_symbol.flags = BSF_SECTION_SYM; + mips_elf_data_symbol.section = &mips_elf_data_section; + mips_elf_data_symbol_ptr = &mips_elf_data_symbol; + mips_elf_data_section_ptr = &mips_elf_data_section; + } + /* This code used to do *secp = bfd_und_section_ptr if + info->shared. I don't know why, and that doesn't make sense, + so I took it out. */ + *secp = mips_elf_data_section_ptr; + break; + + case SHN_MIPS_SUNDEFINED: + *secp = bfd_und_section_ptr; + break; + } + + if (SGI_COMPAT (abfd) + && ! info->shared + && info->hash->creator == abfd->xvec + && strcmp (*namep, "__rld_obj_head") == 0) + { + struct elf_link_hash_entry *h; + + /* Mark __rld_obj_head as dynamic. */ + h = NULL; + if (! (_bfd_generic_link_add_one_symbol + (info, abfd, *namep, BSF_GLOBAL, *secp, + (bfd_vma) *valp, (const char *) NULL, false, + get_elf_backend_data (abfd)->collect, + (struct bfd_link_hash_entry **) &h))) + return false; + h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; + h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; + h->type = STT_OBJECT; + + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + + mips_elf_hash_table (info)->use_rld_obj_head = true; + } + + /* If this is a mips16 text symbol, add 1 to the value to make it + odd. This will cause something like .word SYM to come up with + the right value when it is loaded into the PC. */ + if (sym->st_other == STO_MIPS16) + ++*valp; + + return true; +} + +/* Structure used to pass information to mips_elf_output_extsym. */ + +struct extsym_info +{ + bfd *abfd; + struct bfd_link_info *info; + struct ecoff_debug_info *debug; + const struct ecoff_debug_swap *swap; + boolean failed; +}; + +/* This routine is used to write out ECOFF debugging external symbol + information. It is called via mips_elf_link_hash_traverse. The + ECOFF external symbol information must match the ELF external + symbol information. Unfortunately, at this point we don't know + whether a symbol is required by reloc information, so the two + tables may wind up being different. We must sort out the external + symbol information before we can set the final size of the .mdebug + section, and we must set the size of the .mdebug section before we + can relocate any sections, and we can't know which symbols are + required by relocation until we relocate the sections. + Fortunately, it is relatively unlikely that any symbol will be + stripped but required by a reloc. In particular, it can not happen + when generating a final executable. */ + +static boolean +mips_elf_output_extsym (h, data) + struct mips_elf_link_hash_entry *h; + PTR data; +{ + struct extsym_info *einfo = (struct extsym_info *) data; + boolean strip; + asection *sec, *output_section; + + if (h->root.indx == -2) + strip = false; + else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) + && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 + && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) + strip = true; + else if (einfo->info->strip == strip_all + || (einfo->info->strip == strip_some + && bfd_hash_lookup (einfo->info->keep_hash, + h->root.root.root.string, + false, false) == NULL)) + strip = true; + else + strip = false; + + if (strip) + return true; + + if (h->esym.ifd == -2) + { + h->esym.jmptbl = 0; + h->esym.cobol_main = 0; + h->esym.weakext = 0; + h->esym.reserved = 0; + h->esym.ifd = ifdNil; + h->esym.asym.value = 0; + h->esym.asym.st = stGlobal; + + if (SGI_COMPAT (einfo->abfd) + && (h->root.root.type == bfd_link_hash_undefined + || h->root.root.type == bfd_link_hash_undefweak)) + { + const char *name; + + /* Use undefined class. Also, set class and type for some + special symbols. */ + name = h->root.root.root.string; + if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 + || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) + { + h->esym.asym.sc = scData; + h->esym.asym.st = stLabel; + h->esym.asym.value = 0; + } + else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) + { + h->esym.asym.sc = scAbs; + h->esym.asym.st = stLabel; + h->esym.asym.value = + mips_elf_hash_table (einfo->info)->procedure_count; + } + else if (strcmp (name, "_gp_disp") == 0) + { + h->esym.asym.sc = scAbs; + h->esym.asym.st = stLabel; + h->esym.asym.value = elf_gp (einfo->abfd); + } + else + h->esym.asym.sc = scUndefined; + } + else if (h->root.root.type != bfd_link_hash_defined + && h->root.root.type != bfd_link_hash_defweak) + h->esym.asym.sc = scAbs; + else + { + const char *name; + + sec = h->root.root.u.def.section; + output_section = sec->output_section; + + /* When making a shared library and symbol h is the one from + the another shared library, OUTPUT_SECTION may be null. */ + if (output_section == NULL) + h->esym.asym.sc = scUndefined; + else + { + name = bfd_section_name (output_section->owner, output_section); + + if (strcmp (name, ".text") == 0) + h->esym.asym.sc = scText; + else if (strcmp (name, ".data") == 0) + h->esym.asym.sc = scData; + else if (strcmp (name, ".sdata") == 0) + h->esym.asym.sc = scSData; + else if (strcmp (name, ".rodata") == 0 + || strcmp (name, ".rdata") == 0) + h->esym.asym.sc = scRData; + else if (strcmp (name, ".bss") == 0) + h->esym.asym.sc = scBss; + else if (strcmp (name, ".sbss") == 0) + h->esym.asym.sc = scSBss; + else if (strcmp (name, ".init") == 0) + h->esym.asym.sc = scInit; + else if (strcmp (name, ".fini") == 0) + h->esym.asym.sc = scFini; + else + h->esym.asym.sc = scAbs; + } + } + + h->esym.asym.reserved = 0; + h->esym.asym.index = indexNil; + } + + if (h->root.root.type == bfd_link_hash_common) + h->esym.asym.value = h->root.root.u.c.size; + else if (h->root.root.type == bfd_link_hash_defined + || h->root.root.type == bfd_link_hash_defweak) + { + if (h->esym.asym.sc == scCommon) + h->esym.asym.sc = scBss; + else if (h->esym.asym.sc == scSCommon) + h->esym.asym.sc = scSBss; + + sec = h->root.root.u.def.section; + output_section = sec->output_section; + if (output_section != NULL) + h->esym.asym.value = (h->root.root.u.def.value + + sec->output_offset + + output_section->vma); + else + h->esym.asym.value = 0; + } + else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) + { + /* Set type and value for a symbol with a function stub. */ + h->esym.asym.st = stProc; + sec = h->root.root.u.def.section; + if (sec == NULL) + h->esym.asym.value = 0; + else + { + output_section = sec->output_section; + if (output_section != NULL) + h->esym.asym.value = (h->root.plt.offset + + sec->output_offset + + output_section->vma); + else + h->esym.asym.value = 0; + } +#if 0 /* FIXME? */ + h->esym.ifd = 0; +#endif + } + + if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, + h->root.root.root.string, + &h->esym)) + { + einfo->failed = true; + return false; + } + + return true; +} + +/* Create a runtime procedure table from the .mdebug section. */ + +static boolean +mips_elf_create_procedure_table (handle, abfd, info, s, debug) + PTR handle; + bfd *abfd; + struct bfd_link_info *info; + asection *s; + struct ecoff_debug_info *debug; +{ + const struct ecoff_debug_swap *swap; + HDRR *hdr = &debug->symbolic_header; + RPDR *rpdr, *rp; + struct rpdr_ext *erp; + PTR rtproc; + struct pdr_ext *epdr; + struct sym_ext *esym; + char *ss, **sv; + char *str; + unsigned long size, count; + unsigned long sindex; + unsigned long i; + PDR pdr; + SYMR sym; + const char *no_name_func = _("static procedure (no name)"); + + epdr = NULL; + rpdr = NULL; + esym = NULL; + ss = NULL; + sv = NULL; + + swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; + + sindex = strlen (no_name_func) + 1; + count = hdr->ipdMax; + if (count > 0) + { + size = swap->external_pdr_size; + + epdr = (struct pdr_ext *) bfd_malloc (size * count); + if (epdr == NULL) + goto error_return; + + if (! _bfd_ecoff_get_accumulated_pdr (handle, (PTR) epdr)) + goto error_return; + + size = sizeof (RPDR); + rp = rpdr = (RPDR *) bfd_malloc (size * count); + if (rpdr == NULL) + goto error_return; + + sv = (char **) bfd_malloc (sizeof (char *) * count); + if (sv == NULL) + goto error_return; + + count = hdr->isymMax; + size = swap->external_sym_size; + esym = (struct sym_ext *) bfd_malloc (size * count); + if (esym == NULL) + goto error_return; + + if (! _bfd_ecoff_get_accumulated_sym (handle, (PTR) esym)) + goto error_return; + + count = hdr->issMax; + ss = (char *) bfd_malloc (count); + if (ss == NULL) + goto error_return; + if (! _bfd_ecoff_get_accumulated_ss (handle, (PTR) ss)) + goto error_return; + + count = hdr->ipdMax; + for (i = 0; i < count; i++, rp++) + { + (*swap->swap_pdr_in) (abfd, (PTR) (epdr + i), &pdr); + (*swap->swap_sym_in) (abfd, (PTR) &esym[pdr.isym], &sym); + rp->adr = sym.value; + rp->regmask = pdr.regmask; + rp->regoffset = pdr.regoffset; + rp->fregmask = pdr.fregmask; + rp->fregoffset = pdr.fregoffset; + rp->frameoffset = pdr.frameoffset; + rp->framereg = pdr.framereg; + rp->pcreg = pdr.pcreg; + rp->irpss = sindex; + sv[i] = ss + sym.iss; + sindex += strlen (sv[i]) + 1; + } + } + + size = sizeof (struct rpdr_ext) * (count + 2) + sindex; + size = BFD_ALIGN (size, 16); + rtproc = (PTR) bfd_alloc (abfd, size); + if (rtproc == NULL) + { + mips_elf_hash_table (info)->procedure_count = 0; + goto error_return; + } + + mips_elf_hash_table (info)->procedure_count = count + 2; + + erp = (struct rpdr_ext *) rtproc; + memset (erp, 0, sizeof (struct rpdr_ext)); + erp++; + str = (char *) rtproc + sizeof (struct rpdr_ext) * (count + 2); + strcpy (str, no_name_func); + str += strlen (no_name_func) + 1; + for (i = 0; i < count; i++) + { + ecoff_swap_rpdr_out (abfd, rpdr + i, erp + i); + strcpy (str, sv[i]); + str += strlen (sv[i]) + 1; + } + ecoff_put_off (abfd, (bfd_vma) -1, (bfd_byte *) (erp + count)->p_adr); + + /* Set the size and contents of .rtproc section. */ + s->_raw_size = size; + s->contents = (bfd_byte *) rtproc; + + /* Skip this section later on (I don't think this currently + matters, but someday it might). */ + s->link_order_head = (struct bfd_link_order *) NULL; + + if (epdr != NULL) + free (epdr); + if (rpdr != NULL) + free (rpdr); + if (esym != NULL) + free (esym); + if (ss != NULL) + free (ss); + if (sv != NULL) + free (sv); + + return true; + + error_return: + if (epdr != NULL) + free (epdr); + if (rpdr != NULL) + free (rpdr); + if (esym != NULL) + free (esym); + if (ss != NULL) + free (ss); + if (sv != NULL) + free (sv); + return false; +} + +/* A comparison routine used to sort .gptab entries. */ + +static int +gptab_compare (p1, p2) + const PTR p1; + const PTR p2; +{ + const Elf32_gptab *a1 = (const Elf32_gptab *) p1; + const Elf32_gptab *a2 = (const Elf32_gptab *) p2; + + return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; +} + +/* We need to use a special link routine to handle the .reginfo and + the .mdebug sections. We need to merge all instances of these + sections together, not write them all out sequentially. */ + +static boolean +mips_elf_final_link (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + asection **secpp; + asection *o; + struct bfd_link_order *p; + asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; + asection *rtproc_sec; + Elf32_RegInfo reginfo; + struct ecoff_debug_info debug; + const struct ecoff_debug_swap *swap + = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; + HDRR *symhdr = &debug.symbolic_header; + PTR mdebug_handle = NULL; + + /* Drop the .options section, since it has special semantics which I + haven't bothered to figure out. */ + for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) + { + if (strcmp ((*secpp)->name, ".options") == 0) + { + for (p = (*secpp)->link_order_head; p != NULL; p = p->next) + if (p->type == bfd_indirect_link_order) + p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; + (*secpp)->link_order_head = NULL; + *secpp = (*secpp)->next; + --abfd->section_count; + break; + } + } + + /* Get a value for the GP register. */ + if (elf_gp (abfd) == 0) + { + struct bfd_link_hash_entry *h; + + h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); + if (h != (struct bfd_link_hash_entry *) NULL + && h->type == bfd_link_hash_defined) + elf_gp (abfd) = (h->u.def.value + + h->u.def.section->output_section->vma + + h->u.def.section->output_offset); + else if (info->relocateable) + { + bfd_vma lo; + + /* Make up a value. */ + lo = (bfd_vma) -1; + for (o = abfd->sections; o != (asection *) NULL; o = o->next) + { + if (o->vma < lo + && (strcmp (o->name, ".sbss") == 0 + || strcmp (o->name, ".sdata") == 0 + || strcmp (o->name, ".lit4") == 0 + || strcmp (o->name, ".lit8") == 0)) + lo = o->vma; + } + elf_gp (abfd) = lo + ELF_MIPS_GP_OFFSET (abfd); + } + else + { + /* If the relocate_section function needs to do a reloc + involving the GP value, it should make a reloc_dangerous + callback to warn that GP is not defined. */ + } + } + + /* Go through the sections and collect the .reginfo and .mdebug + information. */ + reginfo_sec = NULL; + mdebug_sec = NULL; + gptab_data_sec = NULL; + gptab_bss_sec = NULL; + for (o = abfd->sections; o != (asection *) NULL; o = o->next) + { + if (strcmp (o->name, ".reginfo") == 0) + { + memset (®info, 0, sizeof reginfo); + + /* We have found the .reginfo section in the output file. + Look through all the link_orders comprising it and merge + the information together. */ + for (p = o->link_order_head; + p != (struct bfd_link_order *) NULL; + p = p->next) + { + asection *input_section; + bfd *input_bfd; + Elf32_External_RegInfo ext; + Elf32_RegInfo sub; + + if (p->type != bfd_indirect_link_order) + { + if (p->type == bfd_fill_link_order) + continue; + abort (); + } + + input_section = p->u.indirect.section; + input_bfd = input_section->owner; + + /* The linker emulation code has probably clobbered the + size to be zero bytes. */ + if (input_section->_raw_size == 0) + input_section->_raw_size = sizeof (Elf32_External_RegInfo); + + if (! bfd_get_section_contents (input_bfd, input_section, + (PTR) &ext, + (file_ptr) 0, + sizeof ext)) + return false; + + bfd_mips_elf32_swap_reginfo_in (input_bfd, &ext, &sub); + + reginfo.ri_gprmask |= sub.ri_gprmask; + reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; + reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; + reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; + reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; + + /* ri_gp_value is set by the function + mips_elf32_section_processing when the section is + finally written out. */ + + /* Hack: reset the SEC_HAS_CONTENTS flag so that + elf_link_input_bfd ignores this section. */ + input_section->flags &=~ SEC_HAS_CONTENTS; + } + + /* Size has been set in mips_elf_always_size_sections */ + BFD_ASSERT(o->_raw_size == sizeof (Elf32_External_RegInfo)); + + /* Skip this section later on (I don't think this currently + matters, but someday it might). */ + o->link_order_head = (struct bfd_link_order *) NULL; + + reginfo_sec = o; + } + + if (strcmp (o->name, ".mdebug") == 0) + { + struct extsym_info einfo; + + /* We have found the .mdebug section in the output file. + Look through all the link_orders comprising it and merge + the information together. */ + symhdr->magic = swap->sym_magic; + /* FIXME: What should the version stamp be? */ + symhdr->vstamp = 0; + symhdr->ilineMax = 0; + symhdr->cbLine = 0; + symhdr->idnMax = 0; + symhdr->ipdMax = 0; + symhdr->isymMax = 0; + symhdr->ioptMax = 0; + symhdr->iauxMax = 0; + symhdr->issMax = 0; + symhdr->issExtMax = 0; + symhdr->ifdMax = 0; + symhdr->crfd = 0; + symhdr->iextMax = 0; + + /* We accumulate the debugging information itself in the + debug_info structure. */ + debug.line = NULL; + debug.external_dnr = NULL; + debug.external_pdr = NULL; + debug.external_sym = NULL; + debug.external_opt = NULL; + debug.external_aux = NULL; + debug.ss = NULL; + debug.ssext = debug.ssext_end = NULL; + debug.external_fdr = NULL; + debug.external_rfd = NULL; + debug.external_ext = debug.external_ext_end = NULL; + + mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); + if (mdebug_handle == (PTR) NULL) + return false; + + if (SGI_COMPAT (abfd)) + { + asection *s; + EXTR esym; + bfd_vma last; + unsigned int i; + static const char * const name[] = + { ".text", ".init", ".fini", ".data", + ".rodata", ".sdata", ".sbss", ".bss" }; + static const int sc[] = { scText, scInit, scFini, scData, + scRData, scSData, scSBss, scBss }; + + esym.jmptbl = 0; + esym.cobol_main = 0; + esym.weakext = 0; + esym.reserved = 0; + esym.ifd = ifdNil; + esym.asym.iss = issNil; + esym.asym.st = stLocal; + esym.asym.reserved = 0; + esym.asym.index = indexNil; + last = 0; + for (i = 0; i < 8; i++) + { + esym.asym.sc = sc[i]; + s = bfd_get_section_by_name (abfd, name[i]); + if (s != NULL) + { + esym.asym.value = s->vma; + last = s->vma + s->_raw_size; + } + else + esym.asym.value = last; + + if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, + name[i], &esym)) + return false; + } + } + + for (p = o->link_order_head; + p != (struct bfd_link_order *) NULL; + p = p->next) + { + asection *input_section; + bfd *input_bfd; + const struct ecoff_debug_swap *input_swap; + struct ecoff_debug_info input_debug; + char *eraw_src; + char *eraw_end; + + if (p->type != bfd_indirect_link_order) + { + if (p->type == bfd_fill_link_order) + continue; + abort (); + } + + input_section = p->u.indirect.section; + input_bfd = input_section->owner; + + if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour + || (get_elf_backend_data (input_bfd) + ->elf_backend_ecoff_debug_swap) == NULL) + { + /* I don't know what a non MIPS ELF bfd would be + doing with a .mdebug section, but I don't really + want to deal with it. */ + continue; + } + + input_swap = (get_elf_backend_data (input_bfd) + ->elf_backend_ecoff_debug_swap); + + BFD_ASSERT (p->size == input_section->_raw_size); + + /* The ECOFF linking code expects that we have already + read in the debugging information and set up an + ecoff_debug_info structure, so we do that now. */ + if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, + &input_debug)) + return false; + + if (! (bfd_ecoff_debug_accumulate + (mdebug_handle, abfd, &debug, swap, input_bfd, + &input_debug, input_swap, info))) + return false; + + /* Loop through the external symbols. For each one with + interesting information, try to find the symbol in + the linker global hash table and save the information + for the output external symbols. */ + eraw_src = input_debug.external_ext; + eraw_end = (eraw_src + + (input_debug.symbolic_header.iextMax + * input_swap->external_ext_size)); + for (; + eraw_src < eraw_end; + eraw_src += input_swap->external_ext_size) + { + EXTR ext; + const char *name; + struct mips_elf_link_hash_entry *h; + + (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); + if (ext.asym.sc == scNil + || ext.asym.sc == scUndefined + || ext.asym.sc == scSUndefined) + continue; + + name = input_debug.ssext + ext.asym.iss; + h = mips_elf_link_hash_lookup (mips_elf_hash_table (info), + name, false, false, true); + if (h == NULL || h->esym.ifd != -2) + continue; + + if (ext.ifd != -1) + { + BFD_ASSERT (ext.ifd + < input_debug.symbolic_header.ifdMax); + ext.ifd = input_debug.ifdmap[ext.ifd]; + } + + h->esym = ext; + } + + /* Free up the information we just read. */ + free (input_debug.line); + free (input_debug.external_dnr); + free (input_debug.external_pdr); + free (input_debug.external_sym); + free (input_debug.external_opt); + free (input_debug.external_aux); + free (input_debug.ss); + free (input_debug.ssext); + free (input_debug.external_fdr); + free (input_debug.external_rfd); + free (input_debug.external_ext); + + /* Hack: reset the SEC_HAS_CONTENTS flag so that + elf_link_input_bfd ignores this section. */ + input_section->flags &=~ SEC_HAS_CONTENTS; + } + + if (SGI_COMPAT (abfd) && info->shared) + { + /* Create .rtproc section. */ + rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); + if (rtproc_sec == NULL) + { + flagword flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED | SEC_READONLY); + + rtproc_sec = bfd_make_section (abfd, ".rtproc"); + if (rtproc_sec == NULL + || ! bfd_set_section_flags (abfd, rtproc_sec, flags) + || ! bfd_set_section_alignment (abfd, rtproc_sec, 4)) + return false; + } + + if (! mips_elf_create_procedure_table (mdebug_handle, abfd, + info, rtproc_sec, &debug)) + return false; + } + + /* Build the external symbol information. */ + einfo.abfd = abfd; + einfo.info = info; + einfo.debug = &debug; + einfo.swap = swap; + einfo.failed = false; + mips_elf_link_hash_traverse (mips_elf_hash_table (info), + mips_elf_output_extsym, + (PTR) &einfo); + if (einfo.failed) + return false; + + /* Set the size of the .mdebug section. */ + o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); + + /* Skip this section later on (I don't think this currently + matters, but someday it might). */ + o->link_order_head = (struct bfd_link_order *) NULL; + + mdebug_sec = o; + } + + if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) + { + const char *subname; + unsigned int c; + Elf32_gptab *tab; + Elf32_External_gptab *ext_tab; + unsigned int i; + + /* The .gptab.sdata and .gptab.sbss sections hold + information describing how the small data area would + change depending upon the -G switch. These sections + not used in executables files. */ + if (! info->relocateable) + { + asection **secpp; + + for (p = o->link_order_head; + p != (struct bfd_link_order *) NULL; + p = p->next) + { + asection *input_section; + + if (p->type != bfd_indirect_link_order) + { + if (p->type == bfd_fill_link_order) + continue; + abort (); + } + + input_section = p->u.indirect.section; + + /* Hack: reset the SEC_HAS_CONTENTS flag so that + elf_link_input_bfd ignores this section. */ + input_section->flags &=~ SEC_HAS_CONTENTS; + } + + /* Skip this section later on (I don't think this + currently matters, but someday it might). */ + o->link_order_head = (struct bfd_link_order *) NULL; + + /* Really remove the section. */ + for (secpp = &abfd->sections; + *secpp != o; + secpp = &(*secpp)->next) + ; + *secpp = (*secpp)->next; + --abfd->section_count; + + continue; + } + + /* There is one gptab for initialized data, and one for + uninitialized data. */ + if (strcmp (o->name, ".gptab.sdata") == 0) + gptab_data_sec = o; + else if (strcmp (o->name, ".gptab.sbss") == 0) + gptab_bss_sec = o; + else + { + (*_bfd_error_handler) + (_("%s: illegal section name `%s'"), + bfd_get_filename (abfd), o->name); + bfd_set_error (bfd_error_nonrepresentable_section); + return false; + } + + /* The linker script always combines .gptab.data and + .gptab.sdata into .gptab.sdata, and likewise for + .gptab.bss and .gptab.sbss. It is possible that there is + no .sdata or .sbss section in the output file, in which + case we must change the name of the output section. */ + subname = o->name + sizeof ".gptab" - 1; + if (bfd_get_section_by_name (abfd, subname) == NULL) + { + if (o == gptab_data_sec) + o->name = ".gptab.data"; + else + o->name = ".gptab.bss"; + subname = o->name + sizeof ".gptab" - 1; + BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); + } + + /* Set up the first entry. */ + c = 1; + tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); + if (tab == NULL) + return false; + tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); + tab[0].gt_header.gt_unused = 0; + + /* Combine the input sections. */ + for (p = o->link_order_head; + p != (struct bfd_link_order *) NULL; + p = p->next) + { + asection *input_section; + bfd *input_bfd; + bfd_size_type size; + unsigned long last; + bfd_size_type gpentry; + + if (p->type != bfd_indirect_link_order) + { + if (p->type == bfd_fill_link_order) + continue; + abort (); + } + + input_section = p->u.indirect.section; + input_bfd = input_section->owner; + + /* Combine the gptab entries for this input section one + by one. We know that the input gptab entries are + sorted by ascending -G value. */ + size = bfd_section_size (input_bfd, input_section); + last = 0; + for (gpentry = sizeof (Elf32_External_gptab); + gpentry < size; + gpentry += sizeof (Elf32_External_gptab)) + { + Elf32_External_gptab ext_gptab; + Elf32_gptab int_gptab; + unsigned long val; + unsigned long add; + boolean exact; + unsigned int look; + + if (! (bfd_get_section_contents + (input_bfd, input_section, (PTR) &ext_gptab, + gpentry, sizeof (Elf32_External_gptab)))) + { + free (tab); + return false; + } + + bfd_mips_elf32_swap_gptab_in (input_bfd, &ext_gptab, + &int_gptab); + val = int_gptab.gt_entry.gt_g_value; + add = int_gptab.gt_entry.gt_bytes - last; + + exact = false; + for (look = 1; look < c; look++) + { + if (tab[look].gt_entry.gt_g_value >= val) + tab[look].gt_entry.gt_bytes += add; + + if (tab[look].gt_entry.gt_g_value == val) + exact = true; + } + + if (! exact) + { + Elf32_gptab *new_tab; + unsigned int max; + + /* We need a new table entry. */ + new_tab = ((Elf32_gptab *) + bfd_realloc ((PTR) tab, + (c + 1) * sizeof (Elf32_gptab))); + if (new_tab == NULL) + { + free (tab); + return false; + } + tab = new_tab; + tab[c].gt_entry.gt_g_value = val; + tab[c].gt_entry.gt_bytes = add; + + /* Merge in the size for the next smallest -G + value, since that will be implied by this new + value. */ + max = 0; + for (look = 1; look < c; look++) + { + if (tab[look].gt_entry.gt_g_value < val + && (max == 0 + || (tab[look].gt_entry.gt_g_value + > tab[max].gt_entry.gt_g_value))) + max = look; + } + if (max != 0) + tab[c].gt_entry.gt_bytes += + tab[max].gt_entry.gt_bytes; + + ++c; + } + + last = int_gptab.gt_entry.gt_bytes; + } + + /* Hack: reset the SEC_HAS_CONTENTS flag so that + elf_link_input_bfd ignores this section. */ + input_section->flags &=~ SEC_HAS_CONTENTS; + } + + /* The table must be sorted by -G value. */ + if (c > 2) + qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); + + /* Swap out the table. */ + ext_tab = ((Elf32_External_gptab *) + bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); + if (ext_tab == NULL) + { + free (tab); + return false; + } + + for (i = 0; i < c; i++) + bfd_mips_elf32_swap_gptab_out (abfd, tab + i, ext_tab + i); + free (tab); + + o->_raw_size = c * sizeof (Elf32_External_gptab); + o->contents = (bfd_byte *) ext_tab; + + /* Skip this section later on (I don't think this currently + matters, but someday it might). */ + o->link_order_head = (struct bfd_link_order *) NULL; + } + } + + /* Invoke the regular ELF backend linker to do all the work. */ + if (! bfd_elf32_bfd_final_link (abfd, info)) + return false; + + /* Now write out the computed sections. */ + + if (reginfo_sec != (asection *) NULL) + { + Elf32_External_RegInfo ext; + + bfd_mips_elf32_swap_reginfo_out (abfd, ®info, &ext); + if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, + (file_ptr) 0, sizeof ext)) + return false; + } + + if (mdebug_sec != (asection *) NULL) + { + BFD_ASSERT (abfd->output_has_begun); + if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, + swap, info, + mdebug_sec->filepos)) + return false; + + bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); + } + + if (gptab_data_sec != (asection *) NULL) + { + if (! bfd_set_section_contents (abfd, gptab_data_sec, + gptab_data_sec->contents, + (file_ptr) 0, + gptab_data_sec->_raw_size)) + return false; + } + + if (gptab_bss_sec != (asection *) NULL) + { + if (! bfd_set_section_contents (abfd, gptab_bss_sec, + gptab_bss_sec->contents, + (file_ptr) 0, + gptab_bss_sec->_raw_size)) + return false; + } + + if (SGI_COMPAT (abfd)) + { + rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); + if (rtproc_sec != NULL) + { + if (! bfd_set_section_contents (abfd, rtproc_sec, + rtproc_sec->contents, + (file_ptr) 0, + rtproc_sec->_raw_size)) + return false; + } + } + + return true; +} + +/* Handle a MIPS ELF HI16 reloc. */ + +static void +mips_elf_relocate_hi16 (input_bfd, relhi, rello, contents, addend) + bfd *input_bfd; + Elf_Internal_Rela *relhi; + Elf_Internal_Rela *rello; + bfd_byte *contents; + bfd_vma addend; +{ + bfd_vma insn; + bfd_vma addlo; + + insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); + + addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); + addlo &= 0xffff; + + addend += ((insn & 0xffff) << 16) + addlo; + + if ((addlo & 0x8000) != 0) + addend -= 0x10000; + if ((addend & 0x8000) != 0) + addend += 0x10000; + + bfd_put_32 (input_bfd, + (insn & 0xffff0000) | ((addend >> 16) & 0xffff), + contents + relhi->r_offset); +} + +/* Handle a MIPS ELF local GOT16 reloc. */ + +static boolean +mips_elf_relocate_got_local (output_bfd, input_bfd, sgot, relhi, rello, + contents, addend) + bfd *output_bfd; + bfd *input_bfd; + asection *sgot; + Elf_Internal_Rela *relhi; + Elf_Internal_Rela *rello; + bfd_byte *contents; + bfd_vma addend; +{ + unsigned int assigned_gotno; + unsigned int i; + bfd_vma insn; + bfd_vma addlo; + bfd_vma address; + bfd_vma hipage; + bfd_byte *got_contents; + struct mips_got_info *g; + + insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); + + addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); + addlo &= 0xffff; + + addend += ((insn & 0xffff) << 16) + addlo; + + if ((addlo & 0x8000) != 0) + addend -= 0x10000; + if ((addend & 0x8000) != 0) + addend += 0x10000; + + /* Get a got entry representing requested hipage. */ + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + + assigned_gotno = g->assigned_gotno; + got_contents = sgot->contents; + hipage = addend & 0xffff0000; + + for (i = MIPS_RESERVED_GOTNO; i < assigned_gotno; i++) + { + address = bfd_get_32 (input_bfd, got_contents + i * 4); + if (hipage == (address & 0xffff0000)) + break; + } + + if (i == assigned_gotno) + { + if (assigned_gotno >= g->local_gotno) + { + (*_bfd_error_handler) + (_("more got entries are needed for hipage relocations")); + bfd_set_error (bfd_error_bad_value); + return false; + } + + bfd_put_32 (input_bfd, hipage, got_contents + assigned_gotno * 4); + ++g->assigned_gotno; + } + + i = - ELF_MIPS_GP_OFFSET (output_bfd) + i * 4; + bfd_put_32 (input_bfd, (insn & 0xffff0000) | (i & 0xffff), + contents + relhi->r_offset); + + return true; +} + +/* Handle MIPS ELF CALL16 reloc and global GOT16 reloc. */ + +static void +mips_elf_relocate_global_got (input_bfd, rel, contents, offset) + bfd *input_bfd; + Elf_Internal_Rela *rel; + bfd_byte *contents; + bfd_vma offset; +{ + bfd_vma insn; + + insn = bfd_get_32 (input_bfd, contents + rel->r_offset); + bfd_put_32 (input_bfd, + (insn & 0xffff0000) | (offset & 0xffff), + contents + rel->r_offset); +} + +/* Relocate a MIPS ELF section. */ + +static boolean +mips_elf_relocate_section (output_bfd, info, input_bfd, input_section, + contents, relocs, local_syms, local_sections) + bfd *output_bfd; + struct bfd_link_info *info; + bfd *input_bfd; + asection *input_section; + bfd_byte *contents; + Elf_Internal_Rela *relocs; + Elf_Internal_Sym *local_syms; + asection **local_sections; +{ + Elf_Internal_Shdr *symtab_hdr; + size_t locsymcount; + size_t extsymoff; + asection *sgot, *sreloc, *scpt; + bfd *dynobj; + bfd_vma gp; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + struct mips_got_info *g; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + + sgot = NULL; + sreloc = NULL; + if (dynobj == NULL || ! SGI_COMPAT (output_bfd)) + scpt = NULL; + else + scpt = bfd_get_section_by_name (dynobj, ".compact_rel"); + g = NULL; + + if (elf_bad_symtab (input_bfd)) + { + locsymcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); + extsymoff = 0; + } + else + { + locsymcount = symtab_hdr->sh_info; + extsymoff = symtab_hdr->sh_info; + } + + gp = _bfd_get_gp_value (output_bfd); + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; rel++) + { + int r_type; + reloc_howto_type *howto; + unsigned long r_symndx; + bfd_vma addend; + struct elf_link_hash_entry *h; + asection *sec; + Elf_Internal_Sym *sym; + struct mips_elf_link_hash_entry *mh; + int other; + bfd_reloc_status_type r; + + r_type = ELF32_R_TYPE (rel->r_info); + if (r_type == R_MIPS_GNU_VTINHERIT + || r_type == R_MIPS_GNU_VTENTRY) + continue; + if ((r_type < 0 || r_type >= (int) R_MIPS_max) + && r_type != R_MIPS16_26 + && r_type != R_MIPS16_GPREL) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + if (r_type == R_MIPS16_26) + howto = &elf_mips16_jump_howto; + else if (r_type == R_MIPS16_GPREL) + howto = &elf_mips16_gprel_howto; + else + howto = elf_mips_howto_table + r_type; + + if (dynobj != NULL + && (r_type == R_MIPS_CALL16 + || r_type == R_MIPS_GOT16 + || r_type == R_MIPS_CALL_HI16 + || r_type == R_MIPS_CALL_LO16 + || r_type == R_MIPS_GOT_HI16 + || r_type == R_MIPS_GOT_LO16)) + { + /* We need the .got section. */ + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + } + } + + r_symndx = ELF32_R_SYM (rel->r_info); + + /* Mix in the change in GP address for a GP relative reloc. */ + if (r_type != R_MIPS_GPREL16 + && r_type != R_MIPS_LITERAL + && r_type != R_MIPS_GPREL32 + && r_type != R_MIPS16_GPREL) + addend = 0; + else + { + if (gp == 0) + { + if (! ((*info->callbacks->reloc_dangerous) + (info, + _("GP relative relocation when GP not defined"), + input_bfd, input_section, + rel->r_offset))) + return false; + /* Only give the error once per link. */ + gp = 4; + _bfd_set_gp_value (output_bfd, gp); + } + + if (r_symndx < extsymoff + || (elf_bad_symtab (input_bfd) + && local_sections[r_symndx] != NULL)) + { + /* This is a relocation against a section. The current + addend in the instruction is the difference between + INPUT_SECTION->vma and the GP value of INPUT_BFD. We + must change this to be the difference between the + final definition (which will end up in RELOCATION) + and the GP value of OUTPUT_BFD (which is in GP). */ + addend = elf_gp (input_bfd) - gp; + } + else if (! info->relocateable) + { + /* We are doing a final link. The current addend in the + instruction is simply the desired offset into the + symbol (normally zero). We want the instruction to + hold the difference between the final definition of + the symbol (which will end up in RELOCATION) and the + GP value of OUTPUT_BFD (which is in GP). */ + addend = - gp; + } + else + { + /* We are generating relocateable output, and we aren't + going to define this symbol, so we just leave the + instruction alone. */ + addend = 0; + } + } + + h = NULL; + sym = NULL; + sec = NULL; + if (info->relocateable) + { + /* This is a relocateable link. We don't have to change + anything, unless the reloc is against a section symbol, + in which case we have to adjust according to where the + section symbol winds up in the output section. */ + if (r_symndx >= locsymcount + || (elf_bad_symtab (input_bfd) + && local_sections[r_symndx] == NULL)) + r = bfd_reloc_ok; + else + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) + r = bfd_reloc_ok; + else + { + sec = local_sections[r_symndx]; + + /* It would be logical to add sym->st_value here, + but Irix 5 sometimes generates a garbage symbol + value. */ + addend += sec->output_offset; + + /* If this is HI16 or GOT16 with an associated LO16, + adjust the addend accordingly. Otherwise, just + relocate. */ + if (r_type == R_MIPS_64 && bfd_big_endian (input_bfd)) + r = _bfd_relocate_contents (howto, input_bfd, + addend, + contents + rel->r_offset + 4); + else if (r_type != R_MIPS_HI16 && r_type != R_MIPS_GOT16) + r = _bfd_relocate_contents (howto, input_bfd, + addend, + contents + rel->r_offset); + else + { + Elf_Internal_Rela *lorel; + + /* As a GNU extension, permit an arbitrary + number of R_MIPS_HI16 relocs before the + R_MIPS_LO16 reloc. This permits gcc to emit + the HI and LO relocs itself. */ + if (r_type == R_MIPS_GOT16) + lorel = rel + 1; + else + { + for (lorel = rel + 1; + (lorel < relend + && (ELF32_R_TYPE (lorel->r_info) + == R_MIPS_HI16)); + lorel++) + ; + } + if (lorel < relend + && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) + { + mips_elf_relocate_hi16 (input_bfd, rel, lorel, + contents, addend); + r = bfd_reloc_ok; + } + else + r = _bfd_relocate_contents (howto, input_bfd, + addend, + contents + rel->r_offset); + } + } + } + } + else + { + bfd_vma relocation; + boolean local; + boolean undefined_error; + + /* This is a final link. */ + undefined_error = false; + sym = NULL; + if (r_symndx < extsymoff + || (elf_bad_symtab (input_bfd) + && local_sections[r_symndx] != NULL)) + { + local = true; + sym = local_syms + r_symndx; + sec = local_sections[r_symndx]; + relocation = (sec->output_section->vma + + sec->output_offset); + + /* It would be logical to always add sym->st_value here, + but Irix 5 sometimes generates a garbage symbol + value. */ + if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) + relocation += sym->st_value; + + /* mips16 text labels should be treated as odd. */ + if (sym->st_other == STO_MIPS16) + ++relocation; + } + else + { + long indx; + + local = false; + indx = r_symndx - extsymoff; + h = elf_sym_hashes (input_bfd)[indx]; + while (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + if (strcmp (h->root.root.string, "_gp_disp") == 0) + { + if (gp == 0) + { + if (! ((*info->callbacks->reloc_dangerous) + (info, + _("_gp_disp used when GP not defined"), + input_bfd, input_section, + rel->r_offset))) + return false; + /* Only give the error once per link. */ + gp = 4; + _bfd_set_gp_value (output_bfd, gp); + relocation = 0; + } + else + { + sec = input_section; + if (sec->output_section != NULL) + relocation = (gp + - (rel->r_offset + + sec->output_section->vma + + sec->output_offset)); + else + relocation = gp - rel->r_offset; + if (r_type == R_MIPS_LO16) + relocation += 4; + } + } + else if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + sec = h->root.u.def.section; + if (sec->output_section == NULL) + relocation = 0; + else + relocation = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + else if (h->root.type == bfd_link_hash_undefweak) + relocation = 0; + else if (info->shared && !info->symbolic && !info->no_undefined) + relocation = 0; + else if (strcmp (h->root.root.string, "_DYNAMIC_LINK") == 0) + { + /* If this is a dynamic link, we should have created + a _DYNAMIC_LINK symbol in + mips_elf_create_dynamic_sections. Otherwise, we + should define the symbol with a value of 0. + FIXME: It should probably get into the symbol + table somehow as well. */ + BFD_ASSERT (! info->shared); + BFD_ASSERT (bfd_get_section_by_name (output_bfd, + ".dynamic") == NULL); + relocation = 0; + } + else + { + if (! ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset))) + return false; + undefined_error = true; + relocation = 0; + } + } + + mh = (struct mips_elf_link_hash_entry *) h; + if (h != NULL) + other = h->other; + else if (sym != NULL) + other = sym->st_other; + else + other = 0; + + /* If this function has an fn_stub, then it is a mips16 + function which needs a stub if it is called by a 32 bit + function. If this reloc is anything other than a 16 bit + call, redirect the reloc to the stub. We don't redirect + relocs from other stub functions. */ + if (r_type != R_MIPS16_26 + && ((mh != NULL + && mh->fn_stub != NULL) + || (mh == NULL + && elf_tdata (input_bfd)->local_stubs != NULL + && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) + && strncmp (bfd_get_section_name (input_bfd, input_section), + FN_STUB, sizeof FN_STUB - 1) != 0 + && strncmp (bfd_get_section_name (input_bfd, input_section), + CALL_STUB, sizeof CALL_STUB - 1) != 0 + && strncmp (bfd_get_section_name (input_bfd, input_section), + CALL_FP_STUB, sizeof CALL_FP_STUB - 1) != 0) + { + if (mh != NULL) + { + BFD_ASSERT (mh->need_fn_stub); + relocation = (mh->fn_stub->output_section->vma + + mh->fn_stub->output_offset); + } + else + { + asection *fn_stub; + + fn_stub = elf_tdata (input_bfd)->local_stubs[r_symndx]; + relocation = (fn_stub->output_section->vma + + fn_stub->output_offset); + } + + /* RELOCATION now points to 32 bit code. */ + other = 0; + } + + /* If this function has a call_stub, then it is called by a + mips16 function; the call needs to go through a stub if + this function is a 32 bit function. If this reloc is a + 16 bit call, and the symbol is not a 16 bit function, + then redirect the reloc to the stub. Note that we don't + need to worry about calling the function through a + function pointer; such calls are handled by routing + through a special mips16 routine. We don't have to check + whether this call is from a stub; it can't be, because a + stub contains 32 bit code, and hence can not have a 16 + bit reloc. */ + if (r_type == R_MIPS16_26 + && mh != NULL + && (mh->call_stub != NULL || mh->call_fp_stub != NULL) + && other != STO_MIPS16) + { + asection *stub; + + /* If both call_stub and call_fp_stub are defined, we + can figure out which one to use by seeing which one + appears in the input file. */ + if (mh->call_stub != NULL && mh->call_fp_stub != NULL) + { + asection *o; + + stub = NULL; + for (o = input_bfd->sections; o != NULL; o = o->next) + { + if (strncmp (bfd_get_section_name (input_bfd, o), + CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) + { + stub = mh->call_fp_stub; + break; + } + } + if (stub == NULL) + stub = mh->call_stub; + } + else if (mh->call_stub != NULL) + stub = mh->call_stub; + else + stub = mh->call_fp_stub; + + BFD_ASSERT (stub->_raw_size > 0); + relocation = stub->output_section->vma + stub->output_offset; + } + + if (r_type == R_MIPS_HI16) + { + Elf_Internal_Rela *lorel; + + /* As a GNU extension, permit an arbitrary number of + R_MIPS_HI16 relocs before the R_MIPS_LO16 reloc. + This permits gcc to emit the HI and LO relocs itself. */ + for (lorel = rel + 1; + (lorel < relend + && ELF32_R_TYPE (lorel->r_info) == R_MIPS_HI16); + lorel++) + ; + if (lorel < relend + && ELF32_R_TYPE (lorel->r_info) == R_MIPS_LO16) + { + mips_elf_relocate_hi16 (input_bfd, rel, lorel, + contents, relocation + addend); + r = bfd_reloc_ok; + } + else + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, addend); + } + else if (r_type == R_MIPS_GOT16 && local) + { + /* GOT16 must also have an associated LO16 in the local + case. In this case, the addend is extracted and the + section in which the referenced object is determined. + Then the final address of the object is computed and + the GOT entry for the hipage (an aligned 64kb chunk) + is added to .got section if needed. The offset field + of the GOT16-relocated instruction is replaced by the + index of this GOT entry for the hipage. */ + if ((rel + 1) < relend + && ELF32_R_TYPE ((rel + 1)->r_info) == R_MIPS_LO16) + { + if (! mips_elf_relocate_got_local (output_bfd, input_bfd, + sgot, rel, rel + 1, + contents, + relocation + addend)) + return false; + r = bfd_reloc_ok; + } + else + r = bfd_reloc_outofrange; + } + else if (r_type == R_MIPS_CALL16 + || r_type == R_MIPS_GOT16 + || r_type == R_MIPS_CALL_LO16 + || r_type == R_MIPS_GOT_LO16) + { + bfd_vma offset; + + /* This symbol must be registered as a global symbol + having the corresponding got entry. */ + BFD_ASSERT (h->got.offset != (bfd_vma) -1); + + offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; + BFD_ASSERT (g->local_gotno <= offset + && offset < sgot->_raw_size); + bfd_put_32 (output_bfd, relocation + addend, + sgot->contents + offset); + offset = (sgot->output_section->vma + sgot->output_offset + + offset - gp); + mips_elf_relocate_global_got (input_bfd, rel, contents, + offset); + r = bfd_reloc_ok; + } + else if (r_type == R_MIPS_CALL_HI16 + || r_type == R_MIPS_GOT_HI16) + { + bfd_vma offset; + + /* This must be a global symbol with a got entry. The + next reloc must be the corresponding LO16 reloc. */ + BFD_ASSERT (h != NULL && h->got.offset != (bfd_vma) -1); + BFD_ASSERT ((rel + 1) < relend); + BFD_ASSERT ((int) ELF32_R_TYPE ((rel + 1)->r_info) + == (r_type == R_MIPS_CALL_HI16 + ? (int) R_MIPS_CALL_LO16 + : (int) R_MIPS_GOT_LO16)); + + offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; + BFD_ASSERT (g->local_gotno <= offset + && offset < sgot->_raw_size); + bfd_put_32 (output_bfd, relocation + addend, + sgot->contents + offset); + offset = (sgot->output_section->vma + sgot->output_offset + + offset - gp); + mips_elf_relocate_hi16 (input_bfd, rel, rel + 1, contents, + offset); + r = bfd_reloc_ok; + } + else if (r_type == R_MIPS_REL32 + || r_type == R_MIPS_32) + { + Elf_Internal_Rel outrel; + Elf32_crinfo cptrel; + bfd_byte *cr; + + if ((info->shared + || (elf_hash_table (info)->dynamic_sections_created + && h != NULL + && ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) + == 0))) + && (input_section->flags & SEC_ALLOC) != 0) + { + boolean skip; + + /* When generating a shared object, these + relocations are copied into the output file to be + resolved at run time. */ + if (sreloc == NULL) + { + sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); + BFD_ASSERT (sreloc != NULL); + } + + skip = false; + + if (elf_section_data (input_section)->stab_info == NULL) + outrel.r_offset = rel->r_offset; + else + { + bfd_vma off; + + off = (_bfd_stab_section_offset + (output_bfd, &elf_hash_table (info)->stab_info, + input_section, + &elf_section_data (input_section)->stab_info, + rel->r_offset)); + if (off == (bfd_vma) -1) + skip = true; + outrel.r_offset = off; + } + + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + addend = bfd_get_32 (input_bfd, contents + rel->r_offset); + + if (skip) + memset (&outrel, 0, sizeof outrel); + else if (h != NULL + && (! info->symbolic + || (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)) + { + BFD_ASSERT (h->dynindx != -1); + outrel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_REL32); + sec = input_section; + } + else + { + long indx; + + if (h == NULL) + sec = local_sections[r_symndx]; + else + { + BFD_ASSERT (h->root.type == bfd_link_hash_defined + || (h->root.type + == bfd_link_hash_defweak)); + sec = h->root.u.def.section; + } + if (sec != NULL && bfd_is_abs_section (sec)) + indx = 0; + else if (sec == NULL || sec->owner == NULL) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + else + { + asection *osec; + + osec = sec->output_section; + indx = elf_section_data (osec)->dynindx; + if (indx == 0) + abort (); + } + + outrel.r_info = ELF32_R_INFO (indx, R_MIPS_REL32); + addend += relocation; + } + + if (! skip) + bfd_put_32 (output_bfd, addend, contents + rel->r_offset); + + bfd_elf32_swap_reloc_out (output_bfd, &outrel, + (((Elf32_External_Rel *) + sreloc->contents) + + sreloc->reloc_count)); + ++sreloc->reloc_count; + + if (! skip && SGI_COMPAT (output_bfd)) + { + if (scpt == NULL) + continue; + + /* Make an entry of compact relocation info. */ + mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); + cptrel.vaddr = (rel->r_offset + + input_section->output_section->vma + + input_section->output_offset); + if (r_type == R_MIPS_REL32) + mips_elf_set_cr_type (cptrel, CRT_MIPS_REL32); + else + mips_elf_set_cr_type (cptrel, CRT_MIPS_WORD); + mips_elf_set_cr_dist2to (cptrel, 0); + cptrel.konst = addend; + + cr = (scpt->contents + + sizeof (Elf32_External_compact_rel)); + bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, + ((Elf32_External_crinfo *) cr + + scpt->reloc_count)); + ++scpt->reloc_count; + } + + /* This reloc will be computed at runtime, so + there's no need to do anything now. */ + continue; + } + else + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, addend); + } + else if (r_type == R_MIPS_64) + { + bfd_size_type addr; + unsigned long val; + + /* Do a 32 bit relocation, and sign extend to 64 bits. */ + addr = rel->r_offset; + if (bfd_big_endian (input_bfd)) + addr += 4; + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, addr, relocation, + addend); + val = bfd_get_32 (input_bfd, contents + addr); + if ((val & 0x80000000) != 0) + val = 0xffffffff; + else + val = 0; + addr = rel->r_offset; + if (bfd_little_endian (input_bfd)) + addr += 4; + bfd_put_32 (input_bfd, val, contents + addr); + } + else if (r_type == R_MIPS_26 && other == STO_MIPS16) + { + unsigned long insn; + + /* This is a jump to a mips16 routine from a mips32 + routine. We need to change jal into jalx. */ + insn = bfd_get_32 (input_bfd, contents + rel->r_offset); + if (((insn >> 26) & 0x3f) != 0x3 + && ((insn >> 26) & 0x3f) != 0x1d) + { + (*_bfd_error_handler) + (_("%s: %s+0x%lx: jump to mips16 routine which is not jal"), + bfd_get_filename (input_bfd), + input_section->name, + (unsigned long) rel->r_offset); + bfd_set_error (bfd_error_bad_value); + return false; + } + insn = (insn & 0x3ffffff) | (0x1d << 26); + bfd_put_32 (input_bfd, insn, contents + rel->r_offset); + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, addend); + } + else if (r_type == R_MIPS16_26) + { + /* It's easiest to do the normal relocation, and then + dig out the instruction and swap the first word the + way the mips16 expects it. If this is little endian, + though, we need to swap the two words first, and then + swap them back again later, so that the address looks + right. */ + + if (bfd_little_endian (input_bfd)) + { + unsigned long insn; + + insn = bfd_get_32 (input_bfd, contents + rel->r_offset); + insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16); + bfd_put_32 (input_bfd, insn, contents + rel->r_offset); + } + + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, addend); + if (r == bfd_reloc_ok) + { + unsigned long insn; + + if (bfd_little_endian (input_bfd)) + { + insn = bfd_get_32 (input_bfd, contents + rel->r_offset); + insn = ((insn >> 16) & 0xffff) | ((insn & 0xffff) << 16); + bfd_put_32 (input_bfd, insn, contents + rel->r_offset); + } + + insn = bfd_get_16 (input_bfd, contents + rel->r_offset); + insn = ((insn & 0xfc00) + | ((insn & 0x1f) << 5) + | ((insn & 0x3e0) >> 5)); + /* If this is a jump to a 32 bit routine, then make + it jalx. */ + if (other != STO_MIPS16) + insn |= 0x400; + bfd_put_16 (input_bfd, insn, contents + rel->r_offset); + } + } + else if (r_type == R_MIPS16_GPREL) + { + unsigned short extend, insn; + bfd_byte buf[4]; + unsigned long final; + + /* Extract the addend into buf, run the regular reloc, + and stuff the resulting value back into the + instructions. */ + if (rel->r_offset > input_section->_raw_size) + r = bfd_reloc_outofrange; + else + { + extend = bfd_get_16 (input_bfd, contents + rel->r_offset); + insn = bfd_get_16 (input_bfd, contents + rel->r_offset + 2); + bfd_put_32 (input_bfd, + (((extend & 0x1f) << 11) + | (extend & 0x7e0) + | (insn & 0x1f)), + buf); + r = _bfd_final_link_relocate (howto, input_bfd, + input_section, buf, + (bfd_vma) 0, relocation, + addend); + final = bfd_get_32 (input_bfd, buf); + bfd_put_16 (input_bfd, + ((extend & 0xf800) + | ((final >> 11) & 0x1f) + | (final & 0x7e0)), + contents + rel->r_offset); + bfd_put_16 (input_bfd, + ((insn & 0xffe0) + | (final & 0x1f)), + contents + rel->r_offset + 2); + } + } + else + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, addend); + + /* The jal instruction can only jump to an address which is + divisible by 4, and it can only jump to an address with + the same upper 4 bits as the PC. */ + if (r == bfd_reloc_ok + && (r_type == R_MIPS16_26 || r_type == R_MIPS_26)) + { + bfd_vma addr; + bfd_vma pc; + bfd_vma target; + + pc = ((input_section->output_section->vma + + input_section->output_offset + + rel->r_offset) + & 0xf0000000); + target = bfd_get_32 (input_bfd, contents + rel->r_offset) + & (howto->dst_mask); + addr = (target << 2) + pc; + if (other == STO_MIPS16) + addr &= ~ (bfd_vma) 1; + if ((addr & 3) != 0 + || ((addr & 0xf0000000) + != pc)) + r = bfd_reloc_overflow; + } + + /* Don't bother to report a relocation overflow for a call + to a weak undefined symbol with a value of zero. This + permits us to use + if (!f) f(); + even if we aren't in range to call address zero. */ + if (r == bfd_reloc_overflow + && (r_type == R_MIPS16_26 || r_type == R_MIPS_26) + && relocation + addend == 0 + && h != NULL + && h->root.type == bfd_link_hash_undefweak) + r = bfd_reloc_ok; + + /* If we've already issued an error for an undefined symbol, + don't issue another useless error. */ + if (undefined_error + && (r == bfd_reloc_undefined || r == bfd_reloc_overflow)) + r = bfd_reloc_ok; + + if (SGI_COMPAT (abfd) + && scpt != NULL + && (input_section->flags & SEC_ALLOC) != 0) + { + Elf32_crinfo cptrel; + bfd_byte *cr; + + /* Make an entry of compact relocation info. */ + mips_elf_set_cr_format (cptrel, CRF_MIPS_LONG); + cptrel.vaddr = (rel->r_offset + + input_section->output_section->vma + + input_section->output_offset); + + switch (r_type) + { + case R_MIPS_26: + mips_elf_set_cr_type (cptrel, CRT_MIPS_JMPAD); + /* XXX How should we set dist2to in this case. */ + mips_elf_set_cr_dist2to (cptrel, 8); + cptrel.konst = addend + relocation; + cr = scpt->contents + sizeof (Elf32_External_compact_rel); + bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, + ((Elf32_External_crinfo *) cr + + scpt->reloc_count)); + ++scpt->reloc_count; + break; + + case R_MIPS_GPREL16: + case R_MIPS_LITERAL: + case R_MIPS_GPREL32: + mips_elf_set_cr_type (cptrel, CRT_MIPS_GPHI_LO); + cptrel.konst = gp - cptrel.vaddr; + mips_elf_set_cr_dist2to (cptrel, 4); + cr = scpt->contents + sizeof (Elf32_External_compact_rel); + bfd_elf32_swap_crinfo_out (output_bfd, &cptrel, + ((Elf32_External_crinfo *) cr + + scpt->reloc_count)); + ++scpt->reloc_count; + break; + + default: + break; + } + } + } + + if (r != bfd_reloc_ok) + { + switch (r) + { + default: + case bfd_reloc_outofrange: + abort (); + case bfd_reloc_overflow: + { + const char *name; + + if (h != NULL) + name = h->root.root.string; + else + { + name = bfd_elf_string_from_elf_section (input_bfd, + symtab_hdr->sh_link, + sym->st_name); + if (name == NULL) + return false; + if (*name == '\0') + name = bfd_section_name (input_bfd, sec); + } + if (! ((*info->callbacks->reloc_overflow) + (info, name, howto->name, (bfd_vma) 0, + input_bfd, input_section, rel->r_offset))) + return false; + } + break; + } + } + } + + return true; +} + +/* This hook function is called before the linker writes out a global + symbol. We mark symbols as small common if appropriate. This is + also where we undo the increment of the value for a mips16 symbol. */ + +/*ARGSIGNORED*/ +static boolean +mips_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec) + bfd *abfd; + struct bfd_link_info *info; + const char *name; + Elf_Internal_Sym *sym; + asection *input_sec; +{ + /* If we see a common symbol, which implies a relocatable link, then + if a symbol was small common in an input file, mark it as small + common in the output file. */ + if (sym->st_shndx == SHN_COMMON + && strcmp (input_sec->name, ".scommon") == 0) + sym->st_shndx = SHN_MIPS_SCOMMON; + + if (sym->st_other == STO_MIPS16 + && (sym->st_value & 1) != 0) + --sym->st_value; + + return true; +} + +/* Functions for the dynamic linker. */ + +/* The name of the dynamic interpreter. This is put in the .interp + section. */ + +#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" + +/* Create dynamic sections when linking against a dynamic object. */ + +static boolean +mips_elf_create_dynamic_sections (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + struct elf_link_hash_entry *h; + flagword flags; + register asection *s; + const char * const *namep; + + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED | SEC_READONLY); + + /* Mips ABI requests the .dynamic section to be read only. */ + s = bfd_get_section_by_name (abfd, ".dynamic"); + if (s != NULL) + { + if (! bfd_set_section_flags (abfd, s, flags)) + return false; + } + + /* We need to create .got section. */ + if (! mips_elf_create_got_section (abfd, info)) + return false; + + /* Create .stub section. */ + if (bfd_get_section_by_name (abfd, ".stub") == NULL) + { + s = bfd_make_section (abfd, ".stub"); + if (s == NULL + || ! bfd_set_section_flags (abfd, s, flags) + || ! bfd_set_section_alignment (abfd, s, 2)) + return false; + } + + if (SGI_COMPAT (abfd) + && !info->shared + && bfd_get_section_by_name (abfd, ".rld_map") == NULL) + { + s = bfd_make_section (abfd, ".rld_map"); + if (s == NULL + || ! bfd_set_section_flags (abfd, s, flags & ~SEC_READONLY) + || ! bfd_set_section_alignment (abfd, s, 2)) + return false; + } + + if (SGI_COMPAT (abfd)) + { + for (namep = mips_elf_dynsym_rtproc_names; *namep != NULL; namep++) + { + h = NULL; + if (! (_bfd_generic_link_add_one_symbol + (info, abfd, *namep, BSF_GLOBAL, bfd_und_section_ptr, + (bfd_vma) 0, (const char *) NULL, false, + get_elf_backend_data (abfd)->collect, + (struct bfd_link_hash_entry **) &h))) + return false; + h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; + h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; + h->type = STT_SECTION; + + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + /* We need to create a .compact_rel section. */ + if (! mips_elf_create_compact_rel_section (abfd, info)) + return false; + + /* Change aligments of some sections. */ + s = bfd_get_section_by_name (abfd, ".hash"); + if (s != NULL) + bfd_set_section_alignment (abfd, s, 4); + s = bfd_get_section_by_name (abfd, ".dynsym"); + if (s != NULL) + bfd_set_section_alignment (abfd, s, 4); + s = bfd_get_section_by_name (abfd, ".dynstr"); + if (s != NULL) + bfd_set_section_alignment (abfd, s, 4); + s = bfd_get_section_by_name (abfd, ".reginfo"); + if (s != NULL) + bfd_set_section_alignment (abfd, s, 4); + s = bfd_get_section_by_name (abfd, ".dynamic"); + if (s != NULL) + bfd_set_section_alignment (abfd, s, 4); + } + + if (!info->shared) + { + h = NULL; + if (! (_bfd_generic_link_add_one_symbol + (info, abfd, "_DYNAMIC_LINK", BSF_GLOBAL, bfd_abs_section_ptr, + (bfd_vma) 0, (const char *) NULL, false, + get_elf_backend_data (abfd)->collect, + (struct bfd_link_hash_entry **) &h))) + return false; + h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; + h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; + h->type = STT_SECTION; + + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + + if (! mips_elf_hash_table (info)->use_rld_obj_head) + { + /* __rld_map is a four byte word located in the .data section + and is filled in by the rtld to contain a pointer to + the _r_debug structure. Its symbol value will be set in + mips_elf_finish_dynamic_symbol. */ + s = bfd_get_section_by_name (abfd, ".rld_map"); + BFD_ASSERT (s != NULL); + + h = NULL; + if (! (_bfd_generic_link_add_one_symbol + (info, abfd, "__rld_map", BSF_GLOBAL, s, + (bfd_vma) 0, (const char *) NULL, false, + get_elf_backend_data (abfd)->collect, + (struct bfd_link_hash_entry **) &h))) + return false; + h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; + h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; + h->type = STT_OBJECT; + + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + } + + return true; +} + +/* Create the .compact_rel section. */ + +static boolean +mips_elf_create_compact_rel_section (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + flagword flags; + register asection *s; + + if (bfd_get_section_by_name (abfd, ".compact_rel") == NULL) + { + flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED + | SEC_READONLY); + + s = bfd_make_section (abfd, ".compact_rel"); + if (s == NULL + || ! bfd_set_section_flags (abfd, s, flags) + || ! bfd_set_section_alignment (abfd, s, 2)) + return false; + + s->_raw_size = sizeof (Elf32_External_compact_rel); + } + + return true; +} + +/* Create the .got section to hold the global offset table. */ + +static boolean +mips_elf_create_got_section (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + flagword flags; + register asection *s; + struct elf_link_hash_entry *h; + struct mips_got_info *g; + + /* This function may be called more than once. */ + if (bfd_get_section_by_name (abfd, ".got") != NULL) + return true; + + flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY + | SEC_LINKER_CREATED); + + s = bfd_make_section (abfd, ".got"); + if (s == NULL + || ! bfd_set_section_flags (abfd, s, flags) + || ! bfd_set_section_alignment (abfd, s, 4)) + return false; + + /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the + linker script because we don't want to define the symbol if we + are not creating a global offset table. */ + h = NULL; + if (! (_bfd_generic_link_add_one_symbol + (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, + (bfd_vma) 0, (const char *) NULL, false, + get_elf_backend_data (abfd)->collect, + (struct bfd_link_hash_entry **) &h))) + return false; + h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; + h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; + h->type = STT_OBJECT; + + if (info->shared + && ! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + + /* The first several global offset table entries are reserved. */ + s->_raw_size = MIPS_RESERVED_GOTNO * 4; + + g = (struct mips_got_info *) bfd_alloc (abfd, + sizeof (struct mips_got_info)); + if (g == NULL) + return false; + g->global_gotsym = 0; + g->local_gotno = MIPS_RESERVED_GOTNO; + g->assigned_gotno = MIPS_RESERVED_GOTNO; + if (elf_section_data (s) == NULL) + { + s->used_by_bfd = + (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); + if (elf_section_data (s) == NULL) + return false; + } + elf_section_data (s)->tdata = (PTR) g; + + return true; +} + +/* Look through the relocs for a section during the first phase, and + allocate space in the global offset table. */ + +static boolean +mips_elf_check_relocs (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + const char *name; + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + struct mips_got_info *g; + size_t extsymoff; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sgot; + asection *sreloc; + + if (info->relocateable) + return true; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; + + /* Check for the mips16 stub sections. */ + + name = bfd_get_section_name (abfd, sec); + if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) + { + unsigned long r_symndx; + + /* Look at the relocation information to figure out which symbol + this is for. */ + + r_symndx = ELF32_R_SYM (relocs->r_info); + + if (r_symndx < extsymoff + || sym_hashes[r_symndx - extsymoff] == NULL) + { + asection *o; + + /* This stub is for a local symbol. This stub will only be + needed if there is some relocation in this BFD, other + than a 16 bit function call, which refers to this symbol. */ + for (o = abfd->sections; o != NULL; o = o->next) + { + Elf_Internal_Rela *sec_relocs; + const Elf_Internal_Rela *r, *rend; + + /* We can ignore stub sections when looking for relocs. */ + if ((o->flags & SEC_RELOC) == 0 + || o->reloc_count == 0 + || strncmp (bfd_get_section_name (abfd, o), FN_STUB, + sizeof FN_STUB - 1) == 0 + || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, + sizeof CALL_STUB - 1) == 0 + || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, + sizeof CALL_FP_STUB - 1) == 0) + continue; + + sec_relocs = (_bfd_elf32_link_read_relocs + (abfd, o, (PTR) NULL, + (Elf_Internal_Rela *) NULL, + info->keep_memory)); + if (sec_relocs == NULL) + return false; + + rend = sec_relocs + o->reloc_count; + for (r = sec_relocs; r < rend; r++) + if (ELF32_R_SYM (r->r_info) == r_symndx + && ELF32_R_TYPE (r->r_info) != R_MIPS16_26) + break; + + if (! info->keep_memory) + free (sec_relocs); + + if (r < rend) + break; + } + + if (o == NULL) + { + /* There is no non-call reloc for this stub, so we do + not need it. Since this function is called before + the linker maps input sections to output sections, we + can easily discard it by setting the SEC_EXCLUDE + flag. */ + sec->flags |= SEC_EXCLUDE; + return true; + } + + /* Record this stub in an array of local symbol stubs for + this BFD. */ + if (elf_tdata (abfd)->local_stubs == NULL) + { + unsigned long symcount; + asection **n; + + if (elf_bad_symtab (abfd)) + symcount = symtab_hdr->sh_size / sizeof (Elf32_External_Sym); + else + symcount = symtab_hdr->sh_info; + n = (asection **) bfd_zalloc (abfd, + symcount * sizeof (asection *)); + if (n == NULL) + return false; + elf_tdata (abfd)->local_stubs = n; + } + + elf_tdata (abfd)->local_stubs[r_symndx] = sec; + + /* We don't need to set mips16_stubs_seen in this case. + That flag is used to see whether we need to look through + the global symbol table for stubs. We don't need to set + it here, because we just have a local stub. */ + } + else + { + struct mips_elf_link_hash_entry *h; + + h = ((struct mips_elf_link_hash_entry *) + sym_hashes[r_symndx - extsymoff]); + + /* H is the symbol this stub is for. */ + + h->fn_stub = sec; + mips_elf_hash_table (info)->mips16_stubs_seen = true; + } + } + else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 + || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) + { + unsigned long r_symndx; + struct mips_elf_link_hash_entry *h; + asection **loc; + + /* Look at the relocation information to figure out which symbol + this is for. */ + + r_symndx = ELF32_R_SYM (relocs->r_info); + + if (r_symndx < extsymoff + || sym_hashes[r_symndx - extsymoff] == NULL) + { + /* This stub was actually built for a static symbol defined + in the same file. We assume that all static symbols in + mips16 code are themselves mips16, so we can simply + discard this stub. Since this function is called before + the linker maps input sections to output sections, we can + easily discard it by setting the SEC_EXCLUDE flag. */ + sec->flags |= SEC_EXCLUDE; + return true; + } + + h = ((struct mips_elf_link_hash_entry *) + sym_hashes[r_symndx - extsymoff]); + + /* H is the symbol this stub is for. */ + + if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) + loc = &h->call_fp_stub; + else + loc = &h->call_stub; + + /* If we already have an appropriate stub for this function, we + don't need another one, so we can discard this one. Since + this function is called before the linker maps input sections + to output sections, we can easily discard it by setting the + SEC_EXCLUDE flag. We can also discard this section if we + happen to already know that this is a mips16 function; it is + not necessary to check this here, as it is checked later, but + it is slightly faster to check now. */ + if (*loc != NULL || h->root.other == STO_MIPS16) + { + sec->flags |= SEC_EXCLUDE; + return true; + } + + *loc = sec; + mips_elf_hash_table (info)->mips16_stubs_seen = true; + } + + if (dynobj == NULL) + { + sgot = NULL; + g = NULL; + } + else + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + if (sgot == NULL) + g = NULL; + else + { + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + } + } + + sreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + r_symndx = ELF32_R_SYM (rel->r_info); + + if (r_symndx < extsymoff) + h = NULL; + else + { + h = sym_hashes[r_symndx - extsymoff]; + + /* This may be an indirect symbol created because of a version. */ + if (h != NULL) + { + while (h->root.type == bfd_link_hash_indirect) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + } + } + + /* Some relocs require a global offset table. */ + if (dynobj == NULL || sgot == NULL) + { + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_MIPS_GOT16: + case R_MIPS_CALL16: + case R_MIPS_CALL_HI16: + case R_MIPS_CALL_LO16: + case R_MIPS_GOT_HI16: + case R_MIPS_GOT_LO16: + if (dynobj == NULL) + elf_hash_table (info)->dynobj = dynobj = abfd; + if (! mips_elf_create_got_section (dynobj, info)) + return false; + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + break; + + case R_MIPS_32: + case R_MIPS_REL32: + if (dynobj == NULL + && (info->shared || h != NULL) + && (sec->flags & SEC_ALLOC) != 0) + elf_hash_table (info)->dynobj = dynobj = abfd; + break; + + default: + break; + } + } + + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_MIPS_CALL16: + case R_MIPS_CALL_HI16: + case R_MIPS_CALL_LO16: + /* This symbol requires a global offset table entry. */ + + if (h == NULL) + { + (*_bfd_error_handler) + (_("%s: CALL16 reloc at 0x%lx not against global symbol"), + bfd_get_filename (abfd), (unsigned long) rel->r_offset); + bfd_set_error (bfd_error_bad_value); + return false; + } + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + if (h->got.offset != (bfd_vma) -1) + { + /* We have already allocated space in the .got. */ + break; + } + + /* Note the index of the first global got symbol in .dynsym. */ + if (g->global_gotsym == 0 + || g->global_gotsym > (unsigned long) h->dynindx) + g->global_gotsym = h->dynindx; + + /* Make this symbol to have the corresponding got entry. */ + h->got.offset = 0; + + /* We need a stub, not a plt entry for the undefined + function. But we record it as if it needs plt. See + elf_adjust_dynamic_symbol in elflink.h. */ + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + h->type = STT_FUNC; + + break; + + case R_MIPS_GOT16: + case R_MIPS_GOT_HI16: + case R_MIPS_GOT_LO16: + /* This symbol requires a global offset table entry. */ + + if (h != NULL) + { + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + if (h->got.offset != (bfd_vma) -1) + { + /* We have already allocated space in the .got. */ + break; + } + /* Note the index of the first global got symbol in + .dynsym. */ + if (g->global_gotsym == 0 + || g->global_gotsym > (unsigned long) h->dynindx) + g->global_gotsym = h->dynindx; + + /* Make this symbol to be the global got symbol. */ + h->got.offset = 0; + } + + break; + + case R_MIPS_32: + case R_MIPS_REL32: + if ((info->shared || h != NULL) + && (sec->flags & SEC_ALLOC) != 0) + { + if (sreloc == NULL) + { + const char *name = ".rel.dyn"; + + sreloc = bfd_get_section_by_name (dynobj, name); + if (sreloc == NULL) + { + sreloc = bfd_make_section (dynobj, name); + if (sreloc == NULL + || ! bfd_set_section_flags (dynobj, sreloc, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || ! bfd_set_section_alignment (dynobj, sreloc, + 4)) + return false; + } + } + if (info->shared) + { + /* When creating a shared object, we must copy these + reloc types into the output file as R_MIPS_REL32 + relocs. We make room for this reloc in the + .rel.dyn reloc section */ + if (sreloc->_raw_size == 0) + { + /* Add a null element. */ + sreloc->_raw_size += sizeof (Elf32_External_Rel); + ++sreloc->reloc_count; + } + sreloc->_raw_size += sizeof (Elf32_External_Rel); + } + else + { + struct mips_elf_link_hash_entry *hmips; + + /* We only need to copy this reloc if the symbol is + defined in a dynamic object. */ + hmips = (struct mips_elf_link_hash_entry *) h; + ++hmips->mips_32_relocs; + } + } + + if (SGI_COMPAT (abfd)) + mips_elf_hash_table (info)->compact_rel_size += + sizeof (Elf32_External_crinfo); + + break; + + case R_MIPS_26: + case R_MIPS_GPREL16: + case R_MIPS_LITERAL: + case R_MIPS_GPREL32: + if (SGI_COMPAT (abfd)) + mips_elf_hash_table (info)->compact_rel_size += + sizeof (Elf32_External_crinfo); + break; + + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_MIPS_GNU_VTINHERIT: + if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + return false; + break; + + /* This relocation describes which C++ vtable entries are actually + used. Record for later use during GC. */ + case R_MIPS_GNU_VTENTRY: + if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) + return false; + break; + + default: + break; + } + + /* If this reloc is not a 16 bit call, and it has a global + symbol, then we will need the fn_stub if there is one. + References from a stub section do not count. */ + if (h != NULL + && ELF32_R_TYPE (rel->r_info) != R_MIPS16_26 + && strncmp (bfd_get_section_name (abfd, sec), FN_STUB, + sizeof FN_STUB - 1) != 0 + && strncmp (bfd_get_section_name (abfd, sec), CALL_STUB, + sizeof CALL_STUB - 1) != 0 + && strncmp (bfd_get_section_name (abfd, sec), CALL_FP_STUB, + sizeof CALL_FP_STUB - 1) != 0) + { + struct mips_elf_link_hash_entry *mh; + + mh = (struct mips_elf_link_hash_entry *) h; + mh->need_fn_stub = true; + } + } + + return true; +} + +/* Return the section that should be marked against GC for a given + relocation. */ + +static asection * +mips_elf_gc_mark_hook (abfd, info, rel, h, sym) + bfd *abfd; + struct bfd_link_info *info; + Elf_Internal_Rela *rel; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + /* ??? Do mips16 stub sections need to be handled special? */ + + if (h != NULL) + { + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_MIPS_GNU_VTINHERIT: + case R_MIPS_GNU_VTENTRY: + break; + + default: + switch (h->root.type) + { + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + + default: + break; + } + } + } + else + { + if (!(elf_bad_symtab (abfd) + && ELF_ST_BIND (sym->st_info) != STB_LOCAL) + && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) + && sym->st_shndx != SHN_COMMON)) + { + return bfd_section_from_elf_index (abfd, sym->st_shndx); + } + } + + return NULL; +} + +/* Update the got entry reference counts for the section being removed. */ + +static boolean +mips_elf_gc_sweep_hook (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ +#if 0 + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel, *relend; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_MIPS_GOT16: + case R_MIPS_CALL16: + case R_MIPS_CALL_HI16: + case R_MIPS_CALL_LO16: + case R_MIPS_GOT_HI16: + case R_MIPS_GOT_LO16: + /* ??? It would seem that the existing MIPS code does no sort + of reference counting or whatnot on its GOT and PLT entries, + so it is not possible to garbage collect them at this time. */ + break; + + default: + break; + } +#endif + + return true; +} + + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static boolean +mips_elf_adjust_dynamic_symbol (info, h) + struct bfd_link_info *info; + struct elf_link_hash_entry *h; +{ + bfd *dynobj; + struct mips_elf_link_hash_entry *hmips; + asection *s; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) + || h->weakdef != NULL + || ((h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_REF_REGULAR) != 0 + && (h->elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))); + + /* If this symbol is defined in a dynamic object, we need to copy + any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output + file. */ + hmips = (struct mips_elf_link_hash_entry *) h; + if (! info->relocateable + && hmips->mips_32_relocs != 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + s = bfd_get_section_by_name (dynobj, ".rel.dyn"); + BFD_ASSERT (s != NULL); + + if (s->_raw_size == 0) + { + /* Make room for a null element. */ + s->_raw_size += sizeof (Elf32_External_Rel); + ++s->reloc_count; + } + s->_raw_size += hmips->mips_32_relocs * sizeof (Elf32_External_Rel); + } + + /* For a function, create a stub, if needed. */ + if (h->type == STT_FUNC + || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) + { + if (! elf_hash_table (info)->dynamic_sections_created) + return true; + + /* If this symbol is not defined in a regular file, then set + the symbol to the stub location. This is required to make + function pointers compare as equal between the normal + executable and the shared library. */ + if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + { + /* We need .stub section. */ + s = bfd_get_section_by_name (dynobj, ".stub"); + BFD_ASSERT (s != NULL); + + h->root.u.def.section = s; + h->root.u.def.value = s->_raw_size; + + /* XXX Write this stub address somewhere. */ + h->plt.offset = s->_raw_size; + + /* Make room for this stub code. */ + s->_raw_size += MIPS_FUNCTION_STUB_SIZE; + + /* The last half word of the stub will be filled with the index + of this symbol in .dynsym section. */ + return true; + } + } + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->weakdef != NULL) + { + BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined + || h->weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->weakdef->root.u.def.section; + h->root.u.def.value = h->weakdef->root.u.def.value; + return true; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + return true; +} + +/* This function is called after all the input files have been read, + and the input sections have been assigned to output sections. We + check for any mips16 stub sections that we can discard. */ + +static boolean mips_elf_check_mips16_stubs + PARAMS ((struct mips_elf_link_hash_entry *, PTR)); + +static boolean +mips_elf_always_size_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + asection *ri; + + /* The .reginfo section has a fixed size. */ + ri = bfd_get_section_by_name (output_bfd, ".reginfo"); + if (ri != NULL) + bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo)); + + if (info->relocateable + || ! mips_elf_hash_table (info)->mips16_stubs_seen) + return true; + + mips_elf_link_hash_traverse (mips_elf_hash_table (info), + mips_elf_check_mips16_stubs, + (PTR) NULL); + + return true; +} + +/* Check the mips16 stubs for a particular symbol, and see if we can + discard them. */ + +/*ARGSUSED*/ +static boolean +mips_elf_check_mips16_stubs (h, data) + struct mips_elf_link_hash_entry *h; + PTR data; +{ + if (h->fn_stub != NULL + && ! h->need_fn_stub) + { + /* We don't need the fn_stub; the only references to this symbol + are 16 bit calls. Clobber the size to 0 to prevent it from + being included in the link. */ + h->fn_stub->_raw_size = 0; + h->fn_stub->_cooked_size = 0; + h->fn_stub->flags &= ~ SEC_RELOC; + h->fn_stub->reloc_count = 0; + h->fn_stub->flags |= SEC_EXCLUDE; + } + + if (h->call_stub != NULL + && h->root.other == STO_MIPS16) + { + /* We don't need the call_stub; this is a 16 bit function, so + calls from other 16 bit functions are OK. Clobber the size + to 0 to prevent it from being included in the link. */ + h->call_stub->_raw_size = 0; + h->call_stub->_cooked_size = 0; + h->call_stub->flags &= ~ SEC_RELOC; + h->call_stub->reloc_count = 0; + h->call_stub->flags |= SEC_EXCLUDE; + } + + if (h->call_fp_stub != NULL + && h->root.other == STO_MIPS16) + { + /* We don't need the call_stub; this is a 16 bit function, so + calls from other 16 bit functions are OK. Clobber the size + to 0 to prevent it from being included in the link. */ + h->call_fp_stub->_raw_size = 0; + h->call_fp_stub->_cooked_size = 0; + h->call_fp_stub->flags &= ~ SEC_RELOC; + h->call_fp_stub->reloc_count = 0; + h->call_fp_stub->flags |= SEC_EXCLUDE; + } + + return true; +} + +/* Set the sizes of the dynamic sections. */ + +static boolean +mips_elf_size_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *s; + boolean reltext; + asection *sgot; + struct mips_got_info *g; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (! info->shared) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + + /* Recompute the size of .got for local entires (reserved and + hipages) if needed. To estimate it, get the upper bound of total + size of loadable sections. */ + sgot = bfd_get_section_by_name (dynobj, ".got"); + + if (sgot != NULL) + { + bfd_size_type loadable_size = 0; + bfd_size_type local_gotno; + struct _bfd *sub; + + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + + for (sub = info->input_bfds; sub; sub = sub->link_next) + for (s = sub->sections; s != NULL; s = s->next) + { + if ((s->flags & SEC_ALLOC) == 0) + continue; + loadable_size += (s->_raw_size + 0xf) & ~0xf; + } + + loadable_size += MIPS_FUNCTION_STUB_SIZE; + + /* Assume there are two loadable segments consisting of + contiguous sections. Is 5 enough? */ + local_gotno = (loadable_size >> 16) + 5 + MIPS_RESERVED_GOTNO; + g->local_gotno = local_gotno; + sgot->_raw_size += local_gotno * 4; + } + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + reltext = false; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + boolean strip; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + strip = false; + + if (strncmp (name, ".rel", 4) == 0) + { + if (s->_raw_size == 0) + { + /* We only strip the section if the output section name + has the same name. Otherwise, there might be several + input sections for this output section. FIXME: This + code is probably not needed these days anyhow, since + the linker now does not create empty output sections. */ + if (s->output_section != NULL + && strcmp (name, + bfd_get_section_name (s->output_section->owner, + s->output_section)) == 0) + strip = true; + } + else + { + const char *outname; + asection *target; + + /* If this relocation section applies to a read only + section, then we probably need a DT_TEXTREL entry. + If the relocation section is .rel.dyn, we always + assert a DT_TEXTREL entry rather than testing whether + there exists a relocation to a read only section or + not. */ + outname = bfd_get_section_name (output_bfd, + s->output_section); + target = bfd_get_section_by_name (output_bfd, outname + 4); + if ((target != NULL + && (target->flags & SEC_READONLY) != 0 + && (target->flags & SEC_ALLOC) != 0) + || strcmp (outname, ".rel.dyn") == 0) + reltext = true; + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + if (strcmp (name, ".rel.dyn") != 0) + s->reloc_count = 0; + } + } + else if (strncmp (name, ".got", 4) == 0) + { + int i; + + BFD_ASSERT (elf_section_data (s) != NULL); + g = (struct mips_got_info *) elf_section_data (s)->tdata; + BFD_ASSERT (g != NULL); + + /* Fix the size of .got section for the correspondence of + global symbols and got entries. This adds some useless + got entries. Is this required by ABI really? */ + i = elf_hash_table (info)->dynsymcount - g->global_gotsym; + s->_raw_size += i * 4; + } + else if (strncmp (name, ".stub", 5) == 0) + { + /* Irix rld assumes that the function stub isn't at the end + of .text section. So put a dummy. XXX */ + s->_raw_size += MIPS_FUNCTION_STUB_SIZE; + } + else if (! info->shared + && ! mips_elf_hash_table (info)->use_rld_obj_head + && strncmp (name, ".rld_map", 8) == 0) + { + /* We add a room for __rld_map. It will be filled in by the + rtld to contain a pointer to the _r_debug structure. */ + s->_raw_size += 4; + } + else if (SGI_COMPAT (output_bfd) + && strncmp (name, ".compact_rel", 12) == 0) + s->_raw_size += mips_elf_hash_table (info)->compact_rel_size; + else if (strncmp (name, ".init", 5) != 0) + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (strip) + { + _bfd_strip_section_from_output (s); + continue; + } + + /* Allocate memory for the section contents. */ + s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size); + if (s->contents == NULL && s->_raw_size != 0) + { + bfd_set_error (bfd_error_no_memory); + return false; + } + memset (s->contents, 0, s->_raw_size); + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in elf_mips_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ + if (! info->shared) + { + if (SGI_COMPAT (output_bfd)) + { + /* SGI object has the equivalence of DT_DEBUG in the + DT_MIPS_RLD_MAP entry. */ + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) + return false; + } + else + if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) + return false; + } + + if (reltext) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) + return false; + } + + if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) + return false; + + if (bfd_get_section_by_name (dynobj, ".rel.dyn")) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_REL, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_RELSZ, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_RELENT, 0)) + return false; + } + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) + return false; + + if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) + return false; + + s = bfd_get_section_by_name (dynobj, ".liblist"); + BFD_ASSERT (s != NULL); + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) + return false; + } + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) + return false; + +#if 0 + /* Time stamps in executable files are a bad idea. */ + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) + return false; +#endif + +#if 0 /* FIXME */ + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) + return false; +#endif + +#if 0 /* FIXME */ + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) + return false; +#endif + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) + return false; + + if (! bfd_elf32_add_dynamic_entry (info, DT_MIPS_HIPAGENO, 0)) + return false; + +#if 0 /* (SGI_COMPAT) */ + if (! bfd_get_section_by_name (dynobj, ".init")) + if (! bfd_elf32_add_dynamic_entry (info, DT_INIT, 0)) + return false; + + if (! bfd_get_section_by_name (dynobj, ".fini")) + if (! bfd_elf32_add_dynamic_entry (info, DT_FINI, 0)) + return false; +#endif + } + + /* If we use dynamic linking, we generate a section symbol for each + output section. These are local symbols, which means that they + must come first in the dynamic symbol table. + That means we must increment the dynamic symbol index of every + other dynamic symbol. */ + { + unsigned int c, i; + struct mips_got_info *g; + + c = 0; + if (elf_hash_table (info)->dynamic_sections_created) + { +#if 0 + /* We no longer try to restrict the set of sections which get + dynamic symbol table entries, since it fails if we have + other random sections which need dynamic relocations. */ + const char * const *namep; + bfd_size_type strindex; + struct bfd_strtab_hash *dynstr; + + if (SGI_COMPAT (output_bfd)) + { + c = SIZEOF_MIPS_DYNSYM_SECNAMES - 1; + elf_link_hash_traverse (elf_hash_table (info), + mips_elf_adjust_dynindx, + (PTR) &c); + elf_hash_table (info)->dynsymcount += c; + + dynstr = elf_hash_table (info)->dynstr; + BFD_ASSERT (dynstr != NULL); + + for (i = 1, namep = mips_elf_dynsym_sec_names; + *namep != NULL; + i++, namep++) + { + s = bfd_get_section_by_name (output_bfd, *namep); + if (s != NULL) + elf_section_data (s)->dynindx = i; + + strindex = _bfd_stringtab_add (dynstr, *namep, true, false); + if (strindex == (bfd_size_type) -1) + return false; + + mips_elf_hash_table (info)->dynsym_sec_strindex[i] = strindex; + } + } + else +#endif /* 0 */ + { + c = bfd_count_sections (output_bfd); + elf_link_hash_traverse (elf_hash_table (info), + mips_elf_adjust_dynindx, + (PTR) &c); + elf_hash_table (info)->dynsymcount += c; + + for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++) + { + elf_section_data (s)->dynindx = i; + /* These symbols will have no names, so we don't need to + fiddle with dynstr_index. */ + } + } + } + + if (sgot != NULL) + { + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + + /* If there are no global got symbols, fake the last symbol so + for safety. */ + if (g->global_gotsym) + g->global_gotsym += c; + else + g->global_gotsym = elf_hash_table (info)->dynsymcount - 1; + } + } + + return true; +} + +/* Increment the index of a dynamic symbol by a given amount. Called + via elf_link_hash_traverse. */ + +static boolean +mips_elf_adjust_dynindx (h, cparg) + struct elf_link_hash_entry *h; + PTR cparg; +{ + unsigned int *cp = (unsigned int *) cparg; + + if (h->dynindx != -1) + h->dynindx += *cp; + return true; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static boolean +mips_elf_finish_dynamic_symbol (output_bfd, info, h, sym) + bfd *output_bfd; + struct bfd_link_info *info; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + bfd *dynobj; + bfd_vma gval; + asection *sgot; + struct mips_got_info *g; + const char *name; + + dynobj = elf_hash_table (info)->dynobj; + gval = sym->st_value; + + if (h->plt.offset != (bfd_vma) -1) + { + asection *s; + bfd_byte *p; + bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; + + /* This symbol has a stub. Set it up. */ + + BFD_ASSERT (h->dynindx != -1); + + s = bfd_get_section_by_name (dynobj, ".stub"); + BFD_ASSERT (s != NULL); + + /* Fill the stub. */ + p = stub; + bfd_put_32 (output_bfd, STUB_LW(output_bfd), p); + p += 4; + bfd_put_32 (output_bfd, STUB_MOVE, p); + p += 4; + + /* FIXME: Can h->dynindex be more than 64K? */ + if (h->dynindx & 0xffff0000) + return false; + + bfd_put_32 (output_bfd, STUB_JALR, p); + p += 4; + bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, p); + + BFD_ASSERT (h->plt.offset <= s->_raw_size); + memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); + + /* Mark the symbol as undefined. plt.offset != -1 occurs + only for the referenced symbol. */ + sym->st_shndx = SHN_UNDEF; + + /* The run-time linker uses the st_value field of the symbol + to reset the global offset table entry for this external + to its stub address when unlinking a shared object. */ + gval = s->output_section->vma + s->output_offset + h->plt.offset; + sym->st_value = gval; + } + + BFD_ASSERT (h->dynindx != -1); + + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + + if ((unsigned long) h->dynindx >= g->global_gotsym) + { + bfd_size_type offset; + + /* This symbol has an entry in the global offset table. Set its + value to the corresponding got entry, if needed. */ + if (h->got.offset == (bfd_vma) -1) + { + offset = (h->dynindx - g->global_gotsym + g->local_gotno) * 4; + BFD_ASSERT (g->local_gotno * 4 <= offset + && offset < sgot->_raw_size); + bfd_put_32 (output_bfd, gval, sgot->contents + offset); + } + } + + /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ + name = h->root.root.string; + if (strcmp (name, "_DYNAMIC") == 0 + || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) + sym->st_shndx = SHN_ABS; + else if (strcmp (name, "_DYNAMIC_LINK") == 0) + { + sym->st_shndx = SHN_ABS; + sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); + sym->st_value = 1; + } + else if (SGI_COMPAT (output_bfd)) + { + if (strcmp (name, "_gp_disp") == 0) + { + sym->st_shndx = SHN_ABS; + sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); + sym->st_value = elf_gp (output_bfd); + } + else if (strcmp (name, mips_elf_dynsym_rtproc_names[0]) == 0 + || strcmp (name, mips_elf_dynsym_rtproc_names[1]) == 0) + { + sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); + sym->st_other = STO_PROTECTED; + sym->st_value = 0; + sym->st_shndx = SHN_MIPS_DATA; + } + else if (strcmp (name, mips_elf_dynsym_rtproc_names[2]) == 0) + { + sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); + sym->st_other = STO_PROTECTED; + sym->st_value = mips_elf_hash_table (info)->procedure_count; + sym->st_shndx = SHN_ABS; + } + else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) + { + if (h->type == STT_FUNC) + sym->st_shndx = SHN_MIPS_TEXT; + else if (h->type == STT_OBJECT) + sym->st_shndx = SHN_MIPS_DATA; + } + } + + if (SGI_COMPAT (output_bfd) + && ! info->shared) + { + if (! mips_elf_hash_table (info)->use_rld_obj_head + && strcmp (name, "__rld_map") == 0) + { + asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); + BFD_ASSERT (s != NULL); + sym->st_value = s->output_section->vma + s->output_offset; + bfd_put_32 (output_bfd, (bfd_vma) 0, s->contents); + if (mips_elf_hash_table (info)->rld_value == 0) + mips_elf_hash_table (info)->rld_value = sym->st_value; + } + else if (mips_elf_hash_table (info)->use_rld_obj_head + && strcmp (name, "__rld_obj_head") == 0) + { + asection *s = bfd_get_section_by_name (dynobj, ".rld_map"); + BFD_ASSERT (s != NULL); + mips_elf_hash_table (info)->rld_value = sym->st_value; + } + } + + /* If this is a mips16 symbol, force the value to be even. */ + if (sym->st_other == STO_MIPS16 + && (sym->st_value & 1) != 0) + --sym->st_value; + + return true; +} + +/* Finish up the dynamic sections. */ + +static boolean +mips_elf_finish_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + asection *sdyn; + asection *sgot; + struct mips_got_info *g; + + dynobj = elf_hash_table (info)->dynobj; + + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + sgot = bfd_get_section_by_name (dynobj, ".got"); + if (sgot == NULL) + g = NULL; + else + { + BFD_ASSERT (elf_section_data (sgot) != NULL); + g = (struct mips_got_info *) elf_section_data (sgot)->tdata; + BFD_ASSERT (g != NULL); + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + Elf32_External_Dyn *dyncon, *dynconend; + + BFD_ASSERT (sdyn != NULL); + BFD_ASSERT (g != NULL); + + dyncon = (Elf32_External_Dyn *) sdyn->contents; + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + const char *name; + size_t elemsize; + asection *s; + + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + default: + break; + + case DT_RELENT: + s = bfd_get_section_by_name (dynobj, ".rel.dyn"); + BFD_ASSERT (s != NULL); + dyn.d_un.d_val = sizeof (Elf32_External_Rel); + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_STRSZ: + /* Rewrite DT_STRSZ. */ + dyn.d_un.d_val = + _bfd_stringtab_size (elf_hash_table (info)->dynstr); + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_PLTGOT: + name = ".got"; + goto get_vma; + case DT_MIPS_CONFLICT: + name = ".conflict"; + goto get_vma; + case DT_MIPS_LIBLIST: + name = ".liblist"; + get_vma: + s = bfd_get_section_by_name (output_bfd, name); + BFD_ASSERT (s != NULL); + dyn.d_un.d_ptr = s->vma; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_RLD_VERSION: + dyn.d_un.d_val = 1; /* XXX */ + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_FLAGS: + dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_CONFLICTNO: + name = ".conflict"; + elemsize = sizeof (Elf32_Conflict); + goto set_elemno; + + case DT_MIPS_LIBLISTNO: + name = ".liblist"; + elemsize = sizeof (Elf32_Lib); + set_elemno: + s = bfd_get_section_by_name (output_bfd, name); + if (s != NULL) + { + if (s->_cooked_size != 0) + dyn.d_un.d_val = s->_cooked_size / elemsize; + else + dyn.d_un.d_val = s->_raw_size / elemsize; + } + else + dyn.d_un.d_val = 0; + + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_TIME_STAMP: + time ((time_t *) &dyn.d_un.d_val); + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_ICHECKSUM: + /* XXX FIXME: */ + break; + + case DT_MIPS_IVERSION: + /* XXX FIXME: */ + break; + + case DT_MIPS_BASE_ADDRESS: + s = output_bfd->sections; + BFD_ASSERT (s != NULL); + dyn.d_un.d_ptr = s->vma & ~(0xffff); + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_LOCAL_GOTNO: + dyn.d_un.d_val = g->local_gotno; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_SYMTABNO: + name = ".dynsym"; + elemsize = sizeof (Elf32_External_Sym); + s = bfd_get_section_by_name (output_bfd, name); + BFD_ASSERT (s != NULL); + + if (s->_cooked_size != 0) + dyn.d_un.d_val = s->_cooked_size / elemsize; + else + dyn.d_un.d_val = s->_raw_size / elemsize; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_UNREFEXTNO: +#if 0 + dyn.d_un.d_val = SIZEOF_MIPS_DYNSYM_SECNAMES; +#else + dyn.d_un.d_val = bfd_count_sections (output_bfd); +#endif + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_GOTSYM: + dyn.d_un.d_val = g->global_gotsym; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_HIPAGENO: + dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_MIPS_RLD_MAP: + dyn.d_un.d_ptr = mips_elf_hash_table (info)->rld_value; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + } + } + } + + /* The first entry of the global offset table will be filled at + runtime. The second entry will be used by some runtime loaders. + This isn't the case of Irix rld. */ + if (sgot != NULL && sgot->_raw_size > 0) + { + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); + bfd_put_32 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 4); + } + + if (sgot != NULL) + elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; + + { + asection *sdynsym; + asection *s; + Elf_Internal_Sym sym; + Elf32_compact_rel cpt; + + /* Set up the section symbols for the output sections. SGI sets + the STT_NOTYPE attribute for these symbols. Should we do so? */ + + sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); + if (sdynsym != NULL) + { +#if 0 + const char *name; + const char * const * namep = mips_elf_dynsym_sec_names; + unsigned int i; + bfd_vma last; + long dindx; + + /* We no longer try to restrict the set of sections which get + dynamic symbol table entries, since it fails if we have + other random sections which need dynamic relocations. */ + if (SGI_COMPAT (output_bfd)) + { + sym.st_size = 0; + sym.st_name = 0; + sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); + sym.st_other = 0; + + i = 0; + last = 0; + dindx = 0; + while ((name = *namep++) != NULL) + { + s = bfd_get_section_by_name (output_bfd, name); + if (s != NULL) + { + sym.st_value = s->vma; + dindx = elf_section_data (s)->dynindx; + last = s->vma + s->_raw_size; + } + else + { + sym.st_value = last; + dindx++; + } + + sym.st_shndx = (i < MIPS_TEXT_DYNSYM_SECNO + ? SHN_MIPS_TEXT + : SHN_MIPS_DATA); + ++i; + sym.st_name = + mips_elf_hash_table (info)->dynsym_sec_strindex[dindx]; + + bfd_elf32_swap_symbol_out (output_bfd, &sym, + (((Elf32_External_Sym *) + sdynsym->contents) + + dindx)); + } + + /* Set the sh_info field of the output .dynsym section to + the index of the first global symbol. */ + elf_section_data (sdynsym->output_section)->this_hdr.sh_info = + SIZEOF_MIPS_DYNSYM_SECNAMES; + } + else +#endif /* 0 */ + { + sym.st_size = 0; + sym.st_name = 0; + sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); + sym.st_other = 0; + + for (s = output_bfd->sections; s != NULL; s = s->next) + { + int indx; + + sym.st_value = s->vma; + + indx = elf_section_data (s)->this_idx; + BFD_ASSERT (indx > 0); + sym.st_shndx = indx; + + bfd_elf32_swap_symbol_out (output_bfd, &sym, + (((Elf32_External_Sym *) + sdynsym->contents) + + elf_section_data (s)->dynindx)); + } + + /* Set the sh_info field of the output .dynsym section to + the index of the first global symbol. */ + elf_section_data (sdynsym->output_section)->this_hdr.sh_info = + bfd_count_sections (output_bfd) + 1; + } + } + + if (SGI_COMPAT (output_bfd)) + { + /* Write .compact_rel section out. */ + s = bfd_get_section_by_name (dynobj, ".compact_rel"); + if (s != NULL) + { + cpt.id1 = 1; + cpt.num = s->reloc_count; + cpt.id2 = 2; + cpt.offset = (s->output_section->filepos + + sizeof (Elf32_External_compact_rel)); + cpt.reserved0 = 0; + cpt.reserved1 = 0; + bfd_elf32_swap_compact_rel_out (output_bfd, &cpt, + ((Elf32_External_compact_rel *) + s->contents)); + + /* Clean up a dummy stub function entry in .text. */ + s = bfd_get_section_by_name (dynobj, ".stub"); + if (s != NULL) + { + file_ptr dummy_offset; + + BFD_ASSERT (s->_raw_size >= MIPS_FUNCTION_STUB_SIZE); + dummy_offset = s->_raw_size - MIPS_FUNCTION_STUB_SIZE; + memset (s->contents + dummy_offset, 0, + MIPS_FUNCTION_STUB_SIZE); + } + } + } + + /* Clean up a first relocation in .rel.dyn. */ + s = bfd_get_section_by_name (dynobj, ".rel.dyn"); + if (s != NULL && s->_raw_size > 0) + memset (s->contents, 0, sizeof (Elf32_External_Rel)); + } + + return true; +} + +/* This is almost identical to bfd_generic_get_... except that some + MIPS relocations need to be handled specially. Sigh. */ + +static bfd_byte * +elf32_mips_get_relocated_section_contents (abfd, link_info, link_order, data, + relocateable, symbols) + bfd *abfd; + struct bfd_link_info *link_info; + struct bfd_link_order *link_order; + bfd_byte *data; + boolean relocateable; + asymbol **symbols; +{ + /* Get enough memory to hold the stuff */ + bfd *input_bfd = link_order->u.indirect.section->owner; + asection *input_section = link_order->u.indirect.section; + + long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); + arelent **reloc_vector = NULL; + long reloc_count; + + if (reloc_size < 0) + goto error_return; + + reloc_vector = (arelent **) bfd_malloc (reloc_size); + if (reloc_vector == NULL && reloc_size != 0) + goto error_return; + + /* read in the section */ + if (!bfd_get_section_contents (input_bfd, + input_section, + (PTR) data, + 0, + input_section->_raw_size)) + goto error_return; + + /* We're not relaxing the section, so just copy the size info */ + input_section->_cooked_size = input_section->_raw_size; + input_section->reloc_done = true; + + reloc_count = bfd_canonicalize_reloc (input_bfd, + input_section, + reloc_vector, + symbols); + if (reloc_count < 0) + goto error_return; + + if (reloc_count > 0) + { + arelent **parent; + /* for mips */ + int gp_found; + bfd_vma gp = 0x12345678; /* initialize just to shut gcc up */ + + { + struct bfd_hash_entry *h; + struct bfd_link_hash_entry *lh; + /* Skip all this stuff if we aren't mixing formats. */ + if (abfd && input_bfd + && abfd->xvec == input_bfd->xvec) + lh = 0; + else + { + h = bfd_hash_lookup (&link_info->hash->table, "_gp", false, false); + lh = (struct bfd_link_hash_entry *) h; + } + lookup: + if (lh) + { + switch (lh->type) + { + case bfd_link_hash_undefined: + case bfd_link_hash_undefweak: + case bfd_link_hash_common: + gp_found = 0; + break; + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + gp_found = 1; + gp = lh->u.def.value; + break; + case bfd_link_hash_indirect: + case bfd_link_hash_warning: + lh = lh->u.i.link; + /* @@FIXME ignoring warning for now */ + goto lookup; + case bfd_link_hash_new: + default: + abort (); + } + } + else + gp_found = 0; + } + /* end mips */ + for (parent = reloc_vector; *parent != (arelent *) NULL; + parent++) + { + char *error_message = (char *) NULL; + bfd_reloc_status_type r; + + /* Specific to MIPS: Deal with relocation types that require + knowing the gp of the output bfd. */ + asymbol *sym = *(*parent)->sym_ptr_ptr; + if (bfd_is_abs_section (sym->section) && abfd) + { + /* The special_function wouldn't get called anyways. */ + } + else if (!gp_found) + { + /* The gp isn't there; let the special function code + fall over on its own. */ + } + else if ((*parent)->howto->special_function + == _bfd_mips_elf_gprel16_reloc) + { + /* bypass special_function call */ + r = gprel16_with_gp (input_bfd, sym, *parent, input_section, + relocateable, (PTR) data, gp); + goto skip_bfd_perform_relocation; + } + /* end mips specific stuff */ + + r = bfd_perform_relocation (input_bfd, + *parent, + (PTR) data, + input_section, + relocateable ? abfd : (bfd *) NULL, + &error_message); + skip_bfd_perform_relocation: + + if (relocateable) + { + asection *os = input_section->output_section; + + /* A partial link, so keep the relocs */ + os->orelocation[os->reloc_count] = *parent; + os->reloc_count++; + } + + if (r != bfd_reloc_ok) + { + switch (r) + { + case bfd_reloc_undefined: + if (!((*link_info->callbacks->undefined_symbol) + (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), + input_bfd, input_section, (*parent)->address))) + goto error_return; + break; + case bfd_reloc_dangerous: + BFD_ASSERT (error_message != (char *) NULL); + if (!((*link_info->callbacks->reloc_dangerous) + (link_info, error_message, input_bfd, input_section, + (*parent)->address))) + goto error_return; + break; + case bfd_reloc_overflow: + if (!((*link_info->callbacks->reloc_overflow) + (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), + (*parent)->howto->name, (*parent)->addend, + input_bfd, input_section, (*parent)->address))) + goto error_return; + break; + case bfd_reloc_outofrange: + default: + abort (); + break; + } + + } + } + } + if (reloc_vector != NULL) + free (reloc_vector); + return data; + +error_return: + if (reloc_vector != NULL) + free (reloc_vector); + return NULL; +} +#define bfd_elf32_bfd_get_relocated_section_contents \ + elf32_mips_get_relocated_section_contents + +/* ECOFF swapping routines. These are used when dealing with the + .mdebug section, which is in the ECOFF debugging format. */ +static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = +{ + /* Symbol table magic number. */ + magicSym, + /* Alignment of debugging information. E.g., 4. */ + 4, + /* Sizes of external symbolic information. */ + sizeof (struct hdr_ext), + sizeof (struct dnr_ext), + sizeof (struct pdr_ext), + sizeof (struct sym_ext), + sizeof (struct opt_ext), + sizeof (struct fdr_ext), + sizeof (struct rfd_ext), + sizeof (struct ext_ext), + /* Functions to swap in external symbolic data. */ + ecoff_swap_hdr_in, + ecoff_swap_dnr_in, + ecoff_swap_pdr_in, + ecoff_swap_sym_in, + ecoff_swap_opt_in, + ecoff_swap_fdr_in, + ecoff_swap_rfd_in, + ecoff_swap_ext_in, + _bfd_ecoff_swap_tir_in, + _bfd_ecoff_swap_rndx_in, + /* Functions to swap out external symbolic data. */ + ecoff_swap_hdr_out, + ecoff_swap_dnr_out, + ecoff_swap_pdr_out, + ecoff_swap_sym_out, + ecoff_swap_opt_out, + ecoff_swap_fdr_out, + ecoff_swap_rfd_out, + ecoff_swap_ext_out, + _bfd_ecoff_swap_tir_out, + _bfd_ecoff_swap_rndx_out, + /* Function to read in symbolic data. */ + _bfd_mips_elf_read_ecoff_info +}; + +#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec +#define TARGET_LITTLE_NAME "elf32-littlemips" +#define TARGET_BIG_SYM bfd_elf32_bigmips_vec +#define TARGET_BIG_NAME "elf32-bigmips" +#define ELF_ARCH bfd_arch_mips +#define ELF_MACHINE_CODE EM_MIPS + +/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses + a value of 0x1000, and we are compatible. */ +#define ELF_MAXPAGESIZE 0x1000 + +#define elf_backend_collect true +#define elf_backend_type_change_ok true +#define elf_backend_can_gc_sections true +#define elf_info_to_howto 0 +#define elf_info_to_howto_rel mips_info_to_howto_rel +#define elf_backend_sym_is_global mips_elf_sym_is_global +#define elf_backend_object_p mips_elf32_object_p +#define elf_backend_section_from_shdr mips_elf32_section_from_shdr +#define elf_backend_fake_sections _bfd_mips_elf_fake_sections +#define elf_backend_section_from_bfd_section \ + _bfd_mips_elf_section_from_bfd_section +#define elf_backend_section_processing mips_elf32_section_processing +#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing +#define elf_backend_additional_program_headers \ + mips_elf_additional_program_headers +#define elf_backend_modify_segment_map mips_elf_modify_segment_map +#define elf_backend_final_write_processing \ + _bfd_mips_elf_final_write_processing +#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap + +#define bfd_elf32_bfd_is_local_label_name \ + mips_elf_is_local_label_name +#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line +#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents +#define bfd_elf32_bfd_link_hash_table_create \ + mips_elf_link_hash_table_create +#define bfd_elf32_bfd_final_link mips_elf_final_link +#define bfd_elf32_bfd_copy_private_bfd_data \ + _bfd_mips_elf_copy_private_bfd_data +#define bfd_elf32_bfd_merge_private_bfd_data \ + _bfd_mips_elf_merge_private_bfd_data +#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags +#define bfd_elf32_bfd_print_private_bfd_data \ + _bfd_mips_elf_print_private_bfd_data +#define elf_backend_add_symbol_hook mips_elf_add_symbol_hook +#define elf_backend_create_dynamic_sections \ + mips_elf_create_dynamic_sections +#define elf_backend_check_relocs mips_elf_check_relocs +#define elf_backend_adjust_dynamic_symbol \ + mips_elf_adjust_dynamic_symbol +#define elf_backend_always_size_sections \ + mips_elf_always_size_sections +#define elf_backend_size_dynamic_sections \ + mips_elf_size_dynamic_sections +#define elf_backend_relocate_section mips_elf_relocate_section +#define elf_backend_link_output_symbol_hook \ + mips_elf_link_output_symbol_hook +#define elf_backend_finish_dynamic_symbol \ + mips_elf_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + mips_elf_finish_dynamic_sections +#define elf_backend_gc_mark_hook mips_elf_gc_mark_hook +#define elf_backend_gc_sweep_hook mips_elf_gc_sweep_hook + +#define elf_backend_got_header_size (4*MIPS_RESERVED_GOTNO) +#define elf_backend_plt_header_size 0 + +#include "elf32-target.h" |