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-rw-r--r--bfd/pe-mips.c1004
1 files changed, 1004 insertions, 0 deletions
diff --git a/bfd/pe-mips.c b/bfd/pe-mips.c
new file mode 100644
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--- /dev/null
+++ b/bfd/pe-mips.c
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+/* BFD back-end for MIPS PE COFF files.
+ Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
+ Modified from coff-i386.c by DJ Delorie, dj@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. */
+
+#define COFF_WITH_PE
+#define COFF_LONG_SECTION_NAMES
+#define PCRELOFFSET true
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+
+#include "coff/mipspe.h"
+
+#include "coff/internal.h"
+
+#include "coff/pe.h"
+
+#include "libcoff.h"
+
+static bfd_reloc_status_type coff_mips_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static reloc_howto_type *coff_mips_rtype_to_howto
+ PARAMS ((bfd *, asection *, struct internal_reloc *,
+ struct coff_link_hash_entry *, struct internal_syment *,
+
+ bfd_vma *));
+
+static void mips_ecoff_swap_reloc_in PARAMS ((bfd *, PTR,
+ struct internal_reloc *));
+static void mips_ecoff_swap_reloc_out PARAMS ((bfd *,
+ const struct internal_reloc *,
+ PTR));
+static void mips_adjust_reloc_in PARAMS ((bfd *,
+ const struct internal_reloc *,
+ arelent *));
+static void mips_adjust_reloc_out PARAMS ((bfd *, const arelent *,
+ struct internal_reloc *));
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
+/* The page size is a guess based on ELF. */
+
+#define COFF_PAGE_SIZE 0x1000
+
+/* For some reason when using mips COFF the value stored in the .text
+ section for a reference to a common symbol is the value itself plus
+ any desired offset. Ian Taylor, Cygnus Support. */
+
+/* If we are producing relocateable output, we need to do some
+ adjustments to the object file that are not done by the
+ bfd_perform_relocation function. This function is called by every
+ reloc type to make any required adjustments. */
+
+static bfd_reloc_status_type
+coff_mips_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;
+{
+ symvalue diff;
+
+ if (output_bfd == (bfd *) NULL)
+ return bfd_reloc_continue;
+
+ if (bfd_is_com_section (symbol->section))
+ {
+#ifndef COFF_WITH_PE
+ /* We are relocating a common symbol. The current value in the
+ object file is ORIG + OFFSET, where ORIG is the value of the
+ common symbol as seen by the object file when it was compiled
+ (this may be zero if the symbol was undefined) and OFFSET is
+ the offset into the common symbol (normally zero, but may be
+ non-zero when referring to a field in a common structure).
+ ORIG is the negative of reloc_entry->addend, which is set by
+ the CALC_ADDEND macro below. We want to replace the value in
+ the object file with NEW + OFFSET, where NEW is the value of
+ the common symbol which we are going to put in the final
+ object file. NEW is symbol->value. */
+ diff = symbol->value + reloc_entry->addend;
+#else
+ /* In PE mode, we do not offset the common symbol. */
+ diff = reloc_entry->addend;
+#endif
+ }
+ else
+ {
+ /* For some reason bfd_perform_relocation always effectively
+ ignores the addend for a COFF target when producing
+ relocateable output. This seems to be always wrong for 386
+ COFF, so we handle the addend here instead. */
+ diff = reloc_entry->addend;
+ }
+
+#ifdef COFF_WITH_PE
+#if 0
+ /* dj - handle it like any other reloc? */
+ /* FIXME: How should this case be handled? */
+ if (reloc_entry->howto->type == MIPS_R_RVA && diff != 0)
+ abort ();
+#endif
+#endif
+
+#define DOIT(x) \
+ x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + (diff >> howto->rightshift)) & howto->dst_mask))
+
+ if (diff != 0)
+ {
+ reloc_howto_type *howto = reloc_entry->howto;
+ unsigned char *addr = (unsigned char *) data + reloc_entry->address;
+
+ switch (howto->size)
+ {
+ case 0:
+ {
+ char x = bfd_get_8 (abfd, addr);
+ DOIT (x);
+ bfd_put_8 (abfd, x, addr);
+ }
+ break;
+
+ case 1:
+ {
+ short x = bfd_get_16 (abfd, addr);
+ DOIT (x);
+ bfd_put_16 (abfd, x, addr);
+ }
+ break;
+
+ case 2:
+ {
+ long x = bfd_get_32 (abfd, addr);
+ DOIT (x);
+ bfd_put_32 (abfd, x, addr);
+ }
+ break;
+
+ default:
+ abort ();
+ }
+ }
+
+ /* Now let bfd_perform_relocation finish everything up. */
+ return bfd_reloc_continue;
+}
+
+#ifdef COFF_WITH_PE
+/* Return true if this relocation should
+ appear in the output .reloc section. */
+
+static boolean in_reloc_p(abfd, howto)
+ bfd * abfd;
+ reloc_howto_type *howto;
+{
+ return ! howto->pc_relative && howto->type != MIPS_R_RVA;
+}
+#endif
+
+#ifndef PCRELOFFSET
+#define PCRELOFFSET false
+#endif
+
+static reloc_howto_type howto_table[] =
+{
+ /* Reloc type 0 is ignored. The reloc reading code ensures that
+ this is a reference to the .abs section, which will cause
+ bfd_perform_relocation to do nothing. */
+ HOWTO (MIPS_R_ABSOLUTE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ 0, /* special_function */
+ "IGNORE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 16 bit reference to a symbol, normally from a data section. */
+ HOWTO (MIPS_R_REFHALF, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_mips_reloc, /* special_function */
+ "REFHALF", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 32 bit reference to a symbol, normally from a data section. */
+ HOWTO (MIPS_R_REFWORD, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_mips_reloc, /* special_function */
+ "REFWORD", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 26 bit absolute jump address. */
+ HOWTO (MIPS_R_JMPADDR, /* 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. */
+ coff_mips_reloc, /* special_function */
+ "JMPADDR", /* name */
+ true, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The high 16 bits of a symbol value. Handled by the function
+ mips_refhi_reloc. */
+ HOWTO (MIPS_R_REFHI, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_mips_reloc, /* special_function */
+ "REFHI", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* The low 16 bits of a symbol value. */
+ HOWTO (MIPS_R_REFLO, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ coff_mips_reloc, /* special_function */
+ "REFLO", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A reference to an offset from the gp register. Handled by the
+ function mips_gprel_reloc. */
+ HOWTO (MIPS_R_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 */
+ coff_mips_reloc, /* special_function */
+ "GPREL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A reference to a literal using an offset from the gp register.
+ Handled by the function mips_gprel_reloc. */
+ HOWTO (MIPS_R_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 */
+ coff_mips_reloc, /* special_function */
+ "LITERAL", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 8 },
+ { 9 },
+ { 10 },
+ { 11 },
+ { 12 },
+ { 13 },
+ { 14 },
+ { 15 },
+ { 16 },
+ { 17 },
+ { 18 },
+ { 19 },
+ { 20 },
+ { 21 },
+ { 22 },
+ { 23 },
+ { 24 },
+ { 25 },
+ { 26 },
+ { 27 },
+ { 28 },
+ { 29 },
+ { 30 },
+ { 31 },
+ { 32 },
+ { 33 },
+ HOWTO (MIPS_R_RVA, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_mips_reloc, /* special_function */
+ "rva32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+ { 35 },
+ { 36 },
+ HOWTO (MIPS_R_PAIR, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ coff_mips_reloc, /* special_function */
+ "PAIR", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+};
+
+/* Turn a howto into a reloc nunmber */
+
+#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
+#define BADMAG(x) MIPSBADMAG(x)
+#define MIPS 1 /* Customize coffcode.h */
+
+#define RTYPE2HOWTO(cache_ptr, dst) \
+ (cache_ptr)->howto = howto_table + (dst)->r_type;
+
+/* Compute the addend of a reloc. If the reloc is to a common symbol,
+ the object file contains the value of the common symbol. By the
+ time this is called, the linker may be using a different symbol
+ from a different object file with a different value. Therefore, we
+ hack wildly to locate the original symbol from this file so that we
+ can make the correct adjustment. This macro sets coffsym to the
+ symbol from the original file, and uses it to set the addend value
+ correctly. If this is not a common symbol, the usual addend
+ calculation is done, except that an additional tweak is needed for
+ PC relative relocs.
+ FIXME: This macro refers to symbols and asect; these are from the
+ calling function, not the macro arguments. */
+
+#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
+ { \
+ coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
+ if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
+ coffsym = (obj_symbols (abfd) \
+ + (cache_ptr->sym_ptr_ptr - symbols)); \
+ else if (ptr) \
+ coffsym = coff_symbol_from (abfd, ptr); \
+ if (coffsym != (coff_symbol_type *) NULL \
+ && coffsym->native->u.syment.n_scnum == 0) \
+ cache_ptr->addend = - coffsym->native->u.syment.n_value; \
+ else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
+ && ptr->section != (asection *) NULL) \
+ cache_ptr->addend = - (ptr->section->vma + ptr->value); \
+ else \
+ cache_ptr->addend = 0; \
+ if (ptr && howto_table[reloc.r_type].pc_relative) \
+ cache_ptr->addend += asect->vma; \
+ }
+
+
+/* Convert an rtype to howto for the COFF backend linker. */
+
+static reloc_howto_type *
+coff_mips_rtype_to_howto (abfd, sec, rel, h, sym, addendp)
+ bfd *abfd;
+ asection *sec;
+ struct internal_reloc *rel;
+ struct coff_link_hash_entry *h;
+ struct internal_syment *sym;
+ bfd_vma *addendp;
+{
+
+ reloc_howto_type *howto;
+
+ howto = howto_table + rel->r_type;
+
+#ifdef COFF_WITH_PE
+ *addendp = 0;
+#endif
+
+ if (howto->pc_relative)
+ *addendp += sec->vma;
+
+ if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
+ {
+ /* This is a common symbol. The section contents include the
+ size (sym->n_value) as an addend. The relocate_section
+ function will be adding in the final value of the symbol. We
+ need to subtract out the current size in order to get the
+ correct result. */
+
+ BFD_ASSERT (h != NULL);
+
+#ifndef COFF_WITH_PE
+ /* I think we *do* want to bypass this. If we don't, I have
+ seen some data parameters get the wrong relocation address.
+ If I link two versions with and without this section bypassed
+ and then do a binary comparison, the addresses which are
+ different can be looked up in the map. The case in which
+ this section has been bypassed has addresses which correspond
+ to values I can find in the map. */
+ *addendp -= sym->n_value;
+#endif
+ }
+
+#ifndef COFF_WITH_PE
+ /* If the output symbol is common (in which case this must be a
+ relocateable link), we need to add in the final size of the
+ common symbol. */
+ if (h != NULL && h->root.type == bfd_link_hash_common)
+ *addendp += h->root.u.c.size;
+#endif
+
+#ifdef COFF_WITH_PE
+ if (howto->pc_relative)
+ {
+ *addendp -= 4;
+
+ /* If the symbol is defined, then the generic code is going to
+ add back the symbol value in order to cancel out an
+ adjustment it made to the addend. However, we set the addend
+ to 0 at the start of this function. We need to adjust here,
+ to avoid the adjustment the generic code will make. FIXME:
+ This is getting a bit hackish. */
+ if (sym != NULL && sym->n_scnum != 0)
+ *addendp -= sym->n_value;
+ }
+
+ if (rel->r_type == MIPS_R_RVA)
+ {
+ *addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
+ }
+#endif
+
+ return howto;
+}
+
+#define coff_rtype_to_howto coff_mips_rtype_to_howto
+
+
+#define coff_bfd_reloc_type_lookup coff_mips_reloc_type_lookup
+
+
+
+/* Get the howto structure for a generic reloc type. */
+
+static reloc_howto_type *
+coff_mips_reloc_type_lookup (abfd, code)
+ bfd *abfd;
+ bfd_reloc_code_real_type code;
+{
+ int mips_type;
+
+ switch (code)
+ {
+ case BFD_RELOC_16:
+ mips_type = MIPS_R_REFHALF;
+ break;
+ case BFD_RELOC_32:
+ case BFD_RELOC_CTOR:
+ mips_type = MIPS_R_REFWORD;
+ break;
+ case BFD_RELOC_MIPS_JMP:
+ mips_type = MIPS_R_JMPADDR;
+ break;
+ case BFD_RELOC_HI16_S:
+ mips_type = MIPS_R_REFHI;
+ break;
+ case BFD_RELOC_LO16:
+ mips_type = MIPS_R_REFLO;
+ break;
+ case BFD_RELOC_MIPS_GPREL:
+ mips_type = MIPS_R_GPREL;
+ break;
+ case BFD_RELOC_MIPS_LITERAL:
+ mips_type = MIPS_R_LITERAL;
+ break;
+/* FIXME?
+ case BFD_RELOC_16_PCREL_S2:
+ mips_type = MIPS_R_PCREL16;
+ break;
+ case BFD_RELOC_PCREL_HI16_S:
+ mips_type = MIPS_R_RELHI;
+ break;
+ case BFD_RELOC_PCREL_LO16:
+ mips_type = MIPS_R_RELLO;
+ break;
+ case BFD_RELOC_GPREL32:
+ mips_type = MIPS_R_SWITCH;
+ break;
+*/
+ case BFD_RELOC_RVA:
+ mips_type = MIPS_R_RVA;
+ break;
+ default:
+ return (reloc_howto_type *) NULL;
+ }
+
+ return &howto_table[mips_type];
+}
+
+static void
+mips_swap_reloc_in (abfd, src, dst)
+ bfd *abfd;
+ PTR src;
+ PTR dst;
+{
+ static struct internal_reloc pair_prev;
+ RELOC *reloc_src = (RELOC *) src;
+ struct internal_reloc *reloc_dst = (struct internal_reloc *) dst;
+
+ reloc_dst->r_vaddr = bfd_h_get_32(abfd, (bfd_byte *)reloc_src->r_vaddr);
+ reloc_dst->r_symndx =
+ bfd_h_get_signed_32(abfd, (bfd_byte *) reloc_src->r_symndx);
+ reloc_dst->r_type = bfd_h_get_16(abfd, (bfd_byte *) reloc_src->r_type);
+ reloc_dst->r_size = 0;
+ reloc_dst->r_extern = 0;
+ reloc_dst->r_offset = 0;
+
+ switch (reloc_dst->r_type)
+ {
+ case MIPS_R_REFHI:
+ pair_prev = *reloc_dst;
+ break;
+ case MIPS_R_PAIR:
+ reloc_dst->r_offset = reloc_dst->r_symndx;
+ if (reloc_dst->r_offset & 0x8000)
+ reloc_dst->r_offset -= 0x10000;
+ /*printf("dj: pair offset is %08x\n", reloc_dst->r_offset);*/
+ reloc_dst->r_symndx = pair_prev.r_symndx;
+ break;
+ }
+}
+
+static unsigned int
+mips_swap_reloc_out (abfd, src, dst)
+ bfd *abfd;
+ PTR src;
+ PTR dst;
+{
+ static int prev_offset = 1;
+ static bfd_vma prev_addr = 0;
+ struct internal_reloc *reloc_src = (struct internal_reloc *)src;
+ struct external_reloc *reloc_dst = (struct external_reloc *)dst;
+
+ switch (reloc_src->r_type)
+ {
+ case MIPS_R_REFHI:
+ prev_addr = reloc_src->r_vaddr;
+ prev_offset = reloc_src->r_offset;
+ break;
+ case MIPS_R_REFLO:
+ if (reloc_src->r_vaddr == prev_addr)
+ {
+ /* FIXME: only slightly hackish. If we see a REFLO pointing to
+ the same address as a REFHI, we assume this is the matching
+ PAIR reloc and output it accordingly. The symndx is really
+ the low 16 bits of the addend */
+ bfd_h_put_32 (abfd, reloc_src->r_vaddr,
+ (bfd_byte *) reloc_dst->r_vaddr);
+ bfd_h_put_32 (abfd, reloc_src->r_symndx,
+ (bfd_byte *) reloc_dst->r_symndx);
+
+ bfd_h_put_16(abfd, MIPS_R_PAIR, (bfd_byte *)
+ reloc_dst->r_type);
+ return RELSZ;
+ }
+ break;
+ }
+
+ bfd_h_put_32(abfd, reloc_src->r_vaddr, (bfd_byte *) reloc_dst->r_vaddr);
+ bfd_h_put_32(abfd, reloc_src->r_symndx, (bfd_byte *) reloc_dst->r_symndx);
+
+ bfd_h_put_16(abfd, reloc_src->r_type, (bfd_byte *)
+ reloc_dst->r_type);
+ return RELSZ;
+}
+
+#define coff_swap_reloc_in mips_swap_reloc_in
+#define coff_swap_reloc_out mips_swap_reloc_out
+#define NO_COFF_RELOCS
+
+static boolean
+coff_pe_mips_relocate_section (output_bfd, info, input_bfd,
+ input_section, contents, relocs, syms,
+ sections)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ struct internal_reloc *relocs;
+ struct internal_syment *syms;
+ asection **sections;
+{
+ asection **symndx_to_section;
+ struct ecoff_link_hash_entry **sym_hashes;
+ struct coff_link_hash_entry *h;
+ bfd_vma gp;
+ boolean gp_undefined;
+ size_t adjust;
+ long *offsets;
+ struct internal_reloc *rel;
+ struct internal_reloc *rel_end;
+ unsigned int i;
+ boolean got_lo;
+ struct internal_reloc lo_int_rel;
+
+ if (info->relocateable)
+ {
+ (*_bfd_error_handler)(_("\
+%s: `ld -r' not supported with PE MIPS objects\n"),
+ bfd_get_filename (input_bfd));
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ BFD_ASSERT (input_bfd->xvec->byteorder
+ == output_bfd->xvec->byteorder);
+
+#if 0
+ printf("dj: relocate %s(%s) %08x\n",
+ input_bfd->filename, input_section->name,
+ input_section->output_section->vma + input_section->output_offset);
+#endif
+
+ gp = _bfd_get_gp_value (output_bfd);
+ if (gp == 0)
+ gp_undefined = true;
+ else
+ gp_undefined = false;
+
+ got_lo = false;
+
+ adjust = 0;
+
+ rel = relocs;
+ rel_end = rel + input_section->reloc_count;
+ for (i = 0; rel < rel_end; rel++, i++)
+ {
+ long symndx;
+ struct coff_link_hash_entry *h;
+ struct internal_syment *sym;
+ bfd_vma addend = 0;
+ bfd_vma val, tmp, targ, src, low;
+ reloc_howto_type *howto;
+ bfd_reloc_status_type rstat;
+ unsigned char *mem = contents + rel->r_vaddr;
+
+ symndx = rel->r_symndx;
+
+ if (symndx == -1)
+ {
+ h = NULL;
+ sym = NULL;
+ }
+ else
+ {
+ h = obj_coff_sym_hashes (input_bfd)[symndx];
+ sym = syms + symndx;
+ }
+
+ /* COFF treats common symbols in one of two ways. Either the
+ size of the symbol is included in the section contents, or it
+ is not. We assume that the size is not included, and force
+ the rtype_to_howto function to adjust the addend as needed. */
+
+ if (sym != NULL && sym->n_scnum != 0)
+ addend = - sym->n_value;
+ else
+ addend = 0;
+
+
+ howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
+ sym, &addend);
+ if (howto == NULL)
+ return false;
+
+ /* If we are doing a relocateable link, then we can just ignore
+ a PC relative reloc that is pcrel_offset. It will already
+ have the correct value. If this is not a relocateable link,
+ then we should ignore the symbol value. */
+ if (howto->pc_relative && howto->pcrel_offset)
+ {
+ if (info->relocateable)
+ continue;
+ if (sym != NULL && sym->n_scnum != 0)
+ addend += sym->n_value;
+ }
+
+ val = 0;
+
+ if (h == NULL)
+ {
+ asection *sec;
+
+ if (symndx == -1)
+ {
+ sec = bfd_abs_section_ptr;
+ val = 0;
+ }
+ else
+ {
+ sec = sections[symndx];
+ val = (sec->output_section->vma
+ + sec->output_offset
+ + sym->n_value);
+ if (! obj_pe (input_bfd))
+ val -= sec->vma;
+ }
+ }
+ else
+ {
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ asection *sec;
+
+ sec = h->root.u.def.section;
+ val = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+
+ else if (! info->relocateable)
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+
+ src = rel->r_vaddr + input_section->output_section->vma
+ + input_section->output_offset;
+#if 0
+ printf("dj: reloc %02x %-8s a=%08x/%08x(%08x) v=%08x+%08x %s\n",
+ rel->r_type, howto_table[rel->r_type].name,
+ src, rel->r_vaddr, *(unsigned long *)mem, val, rel->r_offset,
+ h?h->root.root.string:"(none)");
+#endif
+
+ /* OK, at this point the following variables are set up:
+ src = VMA of the memory we're fixing up
+ mem = pointer to memory we're fixing up
+ val = VMA of what we need to refer to
+ */
+
+#define UI(x) (*_bfd_error_handler)(_("%s: unimplemented %s\n"), \
+ bfd_get_filename (input_bfd), x); \
+ bfd_set_error (bfd_error_bad_value);
+
+ switch (rel->r_type)
+ {
+ case MIPS_R_ABSOLUTE:
+ /* ignore these */
+ break;
+
+ case MIPS_R_REFHALF:
+ UI("refhalf");
+ break;
+
+ case MIPS_R_REFWORD:
+ tmp = bfd_get_32(input_bfd, mem);
+ /* printf("refword: src=%08x targ=%08x+%08x\n", src, tmp, val); */
+ tmp += val;
+ bfd_put_32(input_bfd, tmp, mem);
+ break;
+
+ case MIPS_R_JMPADDR:
+ tmp = bfd_get_32(input_bfd, mem);
+ targ = val + (tmp&0x03ffffff)*4;
+ if (src & 0xf0000000 != targ & 0xf0000000)
+ {
+ (*_bfd_error_handler)(_("%s: jump too far away\n"),
+ bfd_get_filename (input_bfd));
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ tmp &= 0xfc000000;
+ tmp |= (targ/4) & 0x3ffffff;
+ bfd_put_32(input_bfd, tmp, mem);
+ break;
+
+ case MIPS_R_REFHI:
+ tmp = bfd_get_32(input_bfd, mem);
+ switch (rel[1].r_type)
+ {
+ case MIPS_R_PAIR:
+ /* MS PE object */
+ targ = val + rel[1].r_offset + ((tmp & 0xffff) << 16);
+ break;
+ case MIPS_R_REFLO:
+ /* GNU COFF object */
+ low = bfd_get_32(input_bfd, contents + rel[1].r_vaddr);
+ low &= 0xffff;
+ if (low & 0x8000)
+ low -= 0x10000;
+ targ = val + low + ((tmp & 0xffff) << 16);
+ break;
+ default:
+ (*_bfd_error_handler)(_("%s: bad pair/reflo after refhi\n"),
+ bfd_get_filename (input_bfd));
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ tmp &= 0xffff0000;
+ tmp |= (targ >> 16) & 0xffff;
+ bfd_put_32(input_bfd, tmp, mem);
+ break;
+
+ case MIPS_R_REFLO:
+ tmp = bfd_get_32(input_bfd, mem);
+ targ = val + (tmp & 0xffff);
+ /* printf("refword: src=%08x targ=%08x\n", src, targ); */
+ tmp &= 0xffff0000;
+ tmp |= targ & 0xffff;
+ bfd_put_32(input_bfd, tmp, mem);
+ break;
+
+ case MIPS_R_GPREL:
+ case MIPS_R_LITERAL:
+ UI("gprel");
+ break;
+
+ case MIPS_R_SECTION:
+ UI("section");
+ break;
+
+ case MIPS_R_SECREL:
+ UI("secrel");
+ break;
+
+ case MIPS_R_SECRELLO:
+ UI("secrello");
+ break;
+
+ case MIPS_R_SECRELHI:
+ UI("secrelhi");
+ break;
+
+ case MIPS_R_RVA:
+ tmp = bfd_get_32 (input_bfd, mem);
+ /* printf("rva: src=%08x targ=%08x+%08x\n", src, tmp, val); */
+ tmp += val
+ - pe_data (input_section->output_section->owner)->pe_opthdr.ImageBase;
+ bfd_put_32 (input_bfd, tmp, mem);
+ break;
+
+ case MIPS_R_PAIR:
+ /* ignore these */
+ break;
+ }
+ }
+
+ return true;
+}
+
+#define coff_relocate_section coff_pe_mips_relocate_section
+
+#ifdef TARGET_UNDERSCORE
+
+/* If mips gcc uses underscores for symbol names, then it does not use
+ a leading dot for local labels, so if TARGET_UNDERSCORE is defined
+ we treat all symbols starting with L as local. */
+
+static boolean coff_mips_is_local_label_name PARAMS ((bfd *, const char *));
+
+static boolean
+coff_mips_is_local_label_name (abfd, name)
+ bfd *abfd;
+ const char *name;
+{
+ if (name[0] == 'L')
+ return true;
+
+ return _bfd_coff_is_local_label_name (abfd, name);
+}
+
+#define coff_bfd_is_local_label_name coff_mips_is_local_label_name
+
+#endif /* TARGET_UNDERSCORE */
+
+#define COFF_NO_HACK_SCNHDR_SIZE
+
+#include "coffcode.h"
+
+const bfd_target
+#ifdef TARGET_SYM
+ TARGET_SYM =
+#else
+ mipslpe_vec =
+#endif
+{
+#ifdef TARGET_NAME
+ TARGET_NAME,
+#else
+ "pe-mips", /* name */
+#endif
+ bfd_target_coff_flavour,
+ BFD_ENDIAN_LITTLE, /* data byte order is little */
+ BFD_ENDIAN_LITTLE, /* header byte order is little */
+
+ (HAS_RELOC | EXEC_P | /* object flags */
+ HAS_LINENO | HAS_DEBUG |
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
+
+#ifndef COFF_WITH_PE
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
+ | SEC_CODE | SEC_DATA),
+#else
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
+ | SEC_CODE | SEC_DATA
+ | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
+#endif
+
+#ifdef TARGET_UNDERSCORE
+ TARGET_UNDERSCORE, /* leading underscore */
+#else
+ 0, /* leading underscore */
+#endif
+ '/', /* ar_pad_char */
+ 15, /* ar_max_namelen */
+
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
+
+/* Note that we allow an object file to be treated as a core file as well. */
+ {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
+ bfd_generic_archive_p, coff_object_p},
+ {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
+ bfd_false},
+ {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ _bfd_write_archive_contents, bfd_false},
+
+ BFD_JUMP_TABLE_GENERIC (coff),
+ BFD_JUMP_TABLE_COPY (coff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (coff),
+ BFD_JUMP_TABLE_RELOCS (coff),
+ BFD_JUMP_TABLE_WRITE (coff),
+ BFD_JUMP_TABLE_LINK (coff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ NULL,
+
+ COFF_SWAP_TABLE
+};
generated by cgit v1.1 at 2024-12-03 09:55:14 +0000