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Diffstat (limited to 'bfd/elfcode.h')
| -rw-r--r-- | bfd/elfcode.h | 1452 |
1 files changed, 1452 insertions, 0 deletions
diff --git a/bfd/elfcode.h b/bfd/elfcode.h new file mode 100644 index 0000000..22f6488 --- /dev/null +++ b/bfd/elfcode.h @@ -0,0 +1,1452 @@ +/* ELF executable support for BFD. + Copyright 1991, 92, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc. + + Written by Fred Fish @ Cygnus Support, from information published + in "UNIX System V Release 4, Programmers Guide: ANSI C and + Programming Support Tools". Sufficient support for gdb. + + Rewritten by Mark Eichin @ Cygnus Support, from information + published in "System V Application Binary Interface", chapters 4 + and 5, as well as the various "Processor Supplement" documents + derived from it. Added support for assembler and other object file + utilities. Further work done by Ken Raeburn (Cygnus Support), Michael + Meissner (Open Software Foundation), and Peter Hoogenboom (University + of Utah) to finish and extend this. + +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. */ + +/* Problems and other issues to resolve. + + (1) BFD expects there to be some fixed number of "sections" in + the object file. I.E. there is a "section_count" variable in the + bfd structure which contains the number of sections. However, ELF + supports multiple "views" of a file. In particular, with current + implementations, executable files typically have two tables, a + program header table and a section header table, both of which + partition the executable. + + In ELF-speak, the "linking view" of the file uses the section header + table to access "sections" within the file, and the "execution view" + uses the program header table to access "segments" within the file. + "Segments" typically may contain all the data from one or more + "sections". + + Note that the section header table is optional in ELF executables, + but it is this information that is most useful to gdb. If the + section header table is missing, then gdb should probably try + to make do with the program header table. (FIXME) + + (2) The code in this file is compiled twice, once in 32-bit mode and + once in 64-bit mode. More of it should be made size-independent + and moved into elf.c. + + (3) ELF section symbols are handled rather sloppily now. This should + be cleaned up, and ELF section symbols reconciled with BFD section + symbols. + + (4) We need a published spec for 64-bit ELF. We've got some stuff here + that we're using for SPARC V9 64-bit chips, but don't assume that + it's cast in stone. + */ + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" +#include "libbfd.h" +#include "elf-bfd.h" + +/* Renaming structures, typedefs, macros and functions to be size-specific. */ +#define Elf_External_Ehdr NAME(Elf,External_Ehdr) +#define Elf_External_Sym NAME(Elf,External_Sym) +#define Elf_External_Shdr NAME(Elf,External_Shdr) +#define Elf_External_Phdr NAME(Elf,External_Phdr) +#define Elf_External_Rel NAME(Elf,External_Rel) +#define Elf_External_Rela NAME(Elf,External_Rela) +#define Elf_External_Dyn NAME(Elf,External_Dyn) + +#define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command) +#define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal) +#define elf_core_file_matches_executable_p \ + NAME(bfd_elf,core_file_matches_executable_p) +#define elf_object_p NAME(bfd_elf,object_p) +#define elf_core_file_p NAME(bfd_elf,core_file_p) +#define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound) +#define elf_get_dynamic_symtab_upper_bound \ + NAME(bfd_elf,get_dynamic_symtab_upper_bound) +#define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in) +#define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in) +#define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out) +#define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out) +#define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in) +#define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out) +#define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in) +#define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out) +#define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in) +#define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out) +#define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound) +#define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc) +#define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table) +#define elf_get_symtab NAME(bfd_elf,get_symtab) +#define elf_canonicalize_dynamic_symtab \ + NAME(bfd_elf,canonicalize_dynamic_symtab) +#define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol) +#define elf_get_symbol_info NAME(bfd_elf,get_symbol_info) +#define elf_get_lineno NAME(bfd_elf,get_lineno) +#define elf_set_arch_mach NAME(bfd_elf,set_arch_mach) +#define elf_find_nearest_line NAME(bfd_elf,find_nearest_line) +#define elf_sizeof_headers NAME(bfd_elf,sizeof_headers) +#define elf_set_section_contents NAME(bfd_elf,set_section_contents) +#define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto) +#define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel) +#define elf_find_section NAME(bfd_elf,find_section) +#define elf_bfd_link_add_symbols NAME(bfd_elf,bfd_link_add_symbols) +#define elf_add_dynamic_entry NAME(bfd_elf,add_dynamic_entry) +#define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr) +#define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs) +#define elf_link_create_dynamic_sections \ + NAME(bfd_elf,link_create_dynamic_sections) +#define elf_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol +#define elf_bfd_final_link NAME(bfd_elf,bfd_final_link) +#define elf_create_pointer_linker_section NAME(bfd_elf,create_pointer_linker_section) +#define elf_finish_pointer_linker_section NAME(bfd_elf,finish_pointer_linker_section) +#define elf_gc_sections NAME(_bfd_elf,gc_sections) +#define elf_gc_common_finalize_got_offsets \ + NAME(_bfd_elf,gc_common_finalize_got_offsets) +#define elf_gc_common_final_link NAME(_bfd_elf,gc_common_final_link) +#define elf_gc_record_vtinherit NAME(_bfd_elf,gc_record_vtinherit) +#define elf_gc_record_vtentry NAME(_bfd_elf,gc_record_vtentry) + +#if ARCH_SIZE == 64 +#define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y) +#define ELF_R_SYM(X) ELF64_R_SYM(X) +#define ELF_R_TYPE(X) ELF64_R_TYPE(X) +#define ELFCLASS ELFCLASS64 +#define FILE_ALIGN 8 +#define LOG_FILE_ALIGN 3 +#endif +#if ARCH_SIZE == 32 +#define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y) +#define ELF_R_SYM(X) ELF32_R_SYM(X) +#define ELF_R_TYPE(X) ELF32_R_TYPE(X) +#define ELFCLASS ELFCLASS32 +#define FILE_ALIGN 4 +#define LOG_FILE_ALIGN 2 +#endif + +/* Static functions */ + +static void elf_swap_ehdr_in + PARAMS ((bfd *, const Elf_External_Ehdr *, Elf_Internal_Ehdr *)); +static void elf_swap_ehdr_out + PARAMS ((bfd *, const Elf_Internal_Ehdr *, Elf_External_Ehdr *)); +static void elf_swap_shdr_in + PARAMS ((bfd *, const Elf_External_Shdr *, Elf_Internal_Shdr *)); +static void elf_swap_shdr_out + PARAMS ((bfd *, const Elf_Internal_Shdr *, Elf_External_Shdr *)); + +#define elf_stringtab_init _bfd_elf_stringtab_init + +#define section_from_elf_index bfd_section_from_elf_index + +static boolean elf_slurp_reloc_table + PARAMS ((bfd *, asection *, asymbol **, boolean)); + +static void write_relocs PARAMS ((bfd *, asection *, PTR)); + +static boolean elf_file_p PARAMS ((Elf_External_Ehdr *)); + +#ifdef DEBUG +static void elf_debug_section PARAMS ((int, Elf_Internal_Shdr *)); +static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *)); +static char *elf_symbol_flags PARAMS ((flagword)); +#endif + +/* Structure swapping routines */ + +/* Should perhaps use put_offset, put_word, etc. For now, the two versions + can be handled by explicitly specifying 32 bits or "the long type". */ +#if ARCH_SIZE == 64 +#define put_word bfd_h_put_64 +#define put_signed_word bfd_h_put_signed_64 +#define get_word bfd_h_get_64 +#define get_signed_word bfd_h_get_signed_64 +#endif +#if ARCH_SIZE == 32 +#define put_word bfd_h_put_32 +#define put_signed_word bfd_h_put_signed_32 +#define get_word bfd_h_get_32 +#define get_signed_word bfd_h_get_signed_32 +#endif + +/* Translate an ELF symbol in external format into an ELF symbol in internal + format. */ + +void +elf_swap_symbol_in (abfd, src, dst) + bfd *abfd; + const Elf_External_Sym *src; + Elf_Internal_Sym *dst; +{ + dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name); + dst->st_value = get_word (abfd, (bfd_byte *) src->st_value); + dst->st_size = get_word (abfd, (bfd_byte *) src->st_size); + dst->st_info = bfd_h_get_8 (abfd, (bfd_byte *) src->st_info); + dst->st_other = bfd_h_get_8 (abfd, (bfd_byte *) src->st_other); + dst->st_shndx = bfd_h_get_16 (abfd, (bfd_byte *) src->st_shndx); +} + +/* Translate an ELF symbol in internal format into an ELF symbol in external + format. */ + +void +elf_swap_symbol_out (abfd, src, cdst) + bfd *abfd; + const Elf_Internal_Sym *src; + PTR cdst; +{ + Elf_External_Sym *dst = (Elf_External_Sym *) cdst; + bfd_h_put_32 (abfd, src->st_name, dst->st_name); + put_word (abfd, src->st_value, dst->st_value); + put_word (abfd, src->st_size, dst->st_size); + bfd_h_put_8 (abfd, src->st_info, dst->st_info); + bfd_h_put_8 (abfd, src->st_other, dst->st_other); + bfd_h_put_16 (abfd, src->st_shndx, dst->st_shndx); +} + + +/* Translate an ELF file header in external format into an ELF file header in + internal format. */ + +static void +elf_swap_ehdr_in (abfd, src, dst) + bfd *abfd; + const Elf_External_Ehdr *src; + Elf_Internal_Ehdr *dst; +{ + memcpy (dst->e_ident, src->e_ident, EI_NIDENT); + dst->e_type = bfd_h_get_16 (abfd, (bfd_byte *) src->e_type); + dst->e_machine = bfd_h_get_16 (abfd, (bfd_byte *) src->e_machine); + dst->e_version = bfd_h_get_32 (abfd, (bfd_byte *) src->e_version); + dst->e_entry = get_word (abfd, (bfd_byte *) src->e_entry); + dst->e_phoff = get_word (abfd, (bfd_byte *) src->e_phoff); + dst->e_shoff = get_word (abfd, (bfd_byte *) src->e_shoff); + dst->e_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->e_flags); + dst->e_ehsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_ehsize); + dst->e_phentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phentsize); + dst->e_phnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phnum); + dst->e_shentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shentsize); + dst->e_shnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shnum); + dst->e_shstrndx = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shstrndx); +} + +/* Translate an ELF file header in internal format into an ELF file header in + external format. */ + +static void +elf_swap_ehdr_out (abfd, src, dst) + bfd *abfd; + const Elf_Internal_Ehdr *src; + Elf_External_Ehdr *dst; +{ + memcpy (dst->e_ident, src->e_ident, EI_NIDENT); + /* note that all elements of dst are *arrays of unsigned char* already... */ + bfd_h_put_16 (abfd, src->e_type, dst->e_type); + bfd_h_put_16 (abfd, src->e_machine, dst->e_machine); + bfd_h_put_32 (abfd, src->e_version, dst->e_version); + put_word (abfd, src->e_entry, dst->e_entry); + put_word (abfd, src->e_phoff, dst->e_phoff); + put_word (abfd, src->e_shoff, dst->e_shoff); + bfd_h_put_32 (abfd, src->e_flags, dst->e_flags); + bfd_h_put_16 (abfd, src->e_ehsize, dst->e_ehsize); + bfd_h_put_16 (abfd, src->e_phentsize, dst->e_phentsize); + bfd_h_put_16 (abfd, src->e_phnum, dst->e_phnum); + bfd_h_put_16 (abfd, src->e_shentsize, dst->e_shentsize); + bfd_h_put_16 (abfd, src->e_shnum, dst->e_shnum); + bfd_h_put_16 (abfd, src->e_shstrndx, dst->e_shstrndx); +} + + +/* Translate an ELF section header table entry in external format into an + ELF section header table entry in internal format. */ + +static void +elf_swap_shdr_in (abfd, src, dst) + bfd *abfd; + const Elf_External_Shdr *src; + Elf_Internal_Shdr *dst; +{ + dst->sh_name = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_name); + dst->sh_type = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_type); + dst->sh_flags = get_word (abfd, (bfd_byte *) src->sh_flags); + dst->sh_addr = get_word (abfd, (bfd_byte *) src->sh_addr); + dst->sh_offset = get_word (abfd, (bfd_byte *) src->sh_offset); + dst->sh_size = get_word (abfd, (bfd_byte *) src->sh_size); + dst->sh_link = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_link); + dst->sh_info = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_info); + dst->sh_addralign = get_word (abfd, (bfd_byte *) src->sh_addralign); + dst->sh_entsize = get_word (abfd, (bfd_byte *) src->sh_entsize); + dst->bfd_section = NULL; + dst->contents = NULL; +} + +/* Translate an ELF section header table entry in internal format into an + ELF section header table entry in external format. */ + +static void +elf_swap_shdr_out (abfd, src, dst) + bfd *abfd; + const Elf_Internal_Shdr *src; + Elf_External_Shdr *dst; +{ + /* note that all elements of dst are *arrays of unsigned char* already... */ + bfd_h_put_32 (abfd, src->sh_name, dst->sh_name); + bfd_h_put_32 (abfd, src->sh_type, dst->sh_type); + put_word (abfd, src->sh_flags, dst->sh_flags); + put_word (abfd, src->sh_addr, dst->sh_addr); + put_word (abfd, src->sh_offset, dst->sh_offset); + put_word (abfd, src->sh_size, dst->sh_size); + bfd_h_put_32 (abfd, src->sh_link, dst->sh_link); + bfd_h_put_32 (abfd, src->sh_info, dst->sh_info); + put_word (abfd, src->sh_addralign, dst->sh_addralign); + put_word (abfd, src->sh_entsize, dst->sh_entsize); +} + + +/* Translate an ELF program header table entry in external format into an + ELF program header table entry in internal format. */ + +void +elf_swap_phdr_in (abfd, src, dst) + bfd *abfd; + const Elf_External_Phdr *src; + Elf_Internal_Phdr *dst; +{ + dst->p_type = bfd_h_get_32 (abfd, (bfd_byte *) src->p_type); + dst->p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->p_flags); + dst->p_offset = get_word (abfd, (bfd_byte *) src->p_offset); + dst->p_vaddr = get_word (abfd, (bfd_byte *) src->p_vaddr); + dst->p_paddr = get_word (abfd, (bfd_byte *) src->p_paddr); + dst->p_filesz = get_word (abfd, (bfd_byte *) src->p_filesz); + dst->p_memsz = get_word (abfd, (bfd_byte *) src->p_memsz); + dst->p_align = get_word (abfd, (bfd_byte *) src->p_align); +} + +void +elf_swap_phdr_out (abfd, src, dst) + bfd *abfd; + const Elf_Internal_Phdr *src; + Elf_External_Phdr *dst; +{ + /* note that all elements of dst are *arrays of unsigned char* already... */ + bfd_h_put_32 (abfd, src->p_type, dst->p_type); + put_word (abfd, src->p_offset, dst->p_offset); + put_word (abfd, src->p_vaddr, dst->p_vaddr); + put_word (abfd, src->p_paddr, dst->p_paddr); + put_word (abfd, src->p_filesz, dst->p_filesz); + put_word (abfd, src->p_memsz, dst->p_memsz); + bfd_h_put_32 (abfd, src->p_flags, dst->p_flags); + put_word (abfd, src->p_align, dst->p_align); +} + +/* Translate an ELF reloc from external format to internal format. */ +INLINE void +elf_swap_reloc_in (abfd, src, dst) + bfd *abfd; + const Elf_External_Rel *src; + Elf_Internal_Rel *dst; +{ + dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset); + dst->r_info = get_word (abfd, (bfd_byte *) src->r_info); +} + +INLINE void +elf_swap_reloca_in (abfd, src, dst) + bfd *abfd; + const Elf_External_Rela *src; + Elf_Internal_Rela *dst; +{ + dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset); + dst->r_info = get_word (abfd, (bfd_byte *) src->r_info); + dst->r_addend = get_signed_word (abfd, (bfd_byte *) src->r_addend); +} + +/* Translate an ELF reloc from internal format to external format. */ +INLINE void +elf_swap_reloc_out (abfd, src, dst) + bfd *abfd; + const Elf_Internal_Rel *src; + Elf_External_Rel *dst; +{ + put_word (abfd, src->r_offset, dst->r_offset); + put_word (abfd, src->r_info, dst->r_info); +} + +INLINE void +elf_swap_reloca_out (abfd, src, dst) + bfd *abfd; + const Elf_Internal_Rela *src; + Elf_External_Rela *dst; +{ + put_word (abfd, src->r_offset, dst->r_offset); + put_word (abfd, src->r_info, dst->r_info); + put_signed_word (abfd, src->r_addend, dst->r_addend); +} + +INLINE void +elf_swap_dyn_in (abfd, p, dst) + bfd *abfd; + const PTR p; + Elf_Internal_Dyn *dst; +{ + const Elf_External_Dyn *src = (const Elf_External_Dyn *) p; + + dst->d_tag = get_word (abfd, src->d_tag); + dst->d_un.d_val = get_word (abfd, src->d_un.d_val); +} + +INLINE void +elf_swap_dyn_out (abfd, src, dst) + bfd *abfd; + const Elf_Internal_Dyn *src; + Elf_External_Dyn *dst; +{ + put_word (abfd, src->d_tag, dst->d_tag); + put_word (abfd, src->d_un.d_val, dst->d_un.d_val); +} + +/* ELF .o/exec file reading */ + + +/* Begin processing a given object. + + First we validate the file by reading in the ELF header and checking + the magic number. */ + +static INLINE boolean +elf_file_p (x_ehdrp) + Elf_External_Ehdr *x_ehdrp; +{ + return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0) + && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1) + && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2) + && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3)); +} + +/* Check to see if the file associated with ABFD matches the target vector + that ABFD points to. + + Note that we may be called several times with the same ABFD, but different + target vectors, most of which will not match. We have to avoid leaving + any side effects in ABFD, or any data it points to (like tdata), if the + file does not match the target vector. */ + +const bfd_target * +elf_object_p (abfd) + bfd *abfd; +{ + Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ + Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ + Elf_External_Shdr x_shdr; /* Section header table entry, external form */ + Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */ + unsigned int shindex; + char *shstrtab; /* Internal copy of section header stringtab */ + struct elf_backend_data *ebd; + struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd); + struct elf_obj_tdata *new_tdata = NULL; + asection *s; + + /* Read in the ELF header in external format. */ + + if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr)) + { + if (bfd_get_error () != bfd_error_system_call) + goto got_wrong_format_error; + else + goto got_no_match; + } + + /* Now check to see if we have a valid ELF file, and one that BFD can + make use of. The magic number must match, the address size ('class') + and byte-swapping must match our XVEC entry, and it must have a + section header table (FIXME: See comments re sections at top of this + file). */ + + if ((elf_file_p (&x_ehdr) == false) || + (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT) || + (x_ehdr.e_ident[EI_CLASS] != ELFCLASS)) + goto got_wrong_format_error; + + /* Check that file's byte order matches xvec's */ + switch (x_ehdr.e_ident[EI_DATA]) + { + case ELFDATA2MSB: /* Big-endian */ + if (! bfd_header_big_endian (abfd)) + goto got_wrong_format_error; + break; + case ELFDATA2LSB: /* Little-endian */ + if (! bfd_header_little_endian (abfd)) + goto got_wrong_format_error; + break; + case ELFDATANONE: /* No data encoding specified */ + default: /* Unknown data encoding specified */ + goto got_wrong_format_error; + } + + /* Allocate an instance of the elf_obj_tdata structure and hook it up to + the tdata pointer in the bfd. */ + + new_tdata = ((struct elf_obj_tdata *) + bfd_zalloc (abfd, sizeof (struct elf_obj_tdata))); + if (new_tdata == NULL) + goto got_no_match; + elf_tdata (abfd) = new_tdata; + + /* Now that we know the byte order, swap in the rest of the header */ + i_ehdrp = elf_elfheader (abfd); + elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp); +#if DEBUG & 1 + elf_debug_file (i_ehdrp); +#endif + + /* Reject ET_CORE (header indicates core file, not object file) */ + if (i_ehdrp->e_type == ET_CORE) + goto got_wrong_format_error; + + /* If there is no section header table, we're hosed. */ + if (i_ehdrp->e_shoff == 0) + goto got_wrong_format_error; + + /* As a simple sanity check, verify that the what BFD thinks is the + size of each section header table entry actually matches the size + recorded in the file. */ + if (i_ehdrp->e_shentsize != sizeof (x_shdr)) + goto got_wrong_format_error; + + ebd = get_elf_backend_data (abfd); + + /* Check that the ELF e_machine field matches what this particular + BFD format expects. */ + if (ebd->elf_machine_code != i_ehdrp->e_machine + && (ebd->elf_machine_alt1 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt1) + && (ebd->elf_machine_alt2 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt2)) + { + const bfd_target * const *target_ptr; + + if (ebd->elf_machine_code != EM_NONE) + goto got_wrong_format_error; + + /* This is the generic ELF target. Let it match any ELF target + for which we do not have a specific backend. */ + for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++) + { + struct elf_backend_data *back; + + if ((*target_ptr)->flavour != bfd_target_elf_flavour) + continue; + back = (struct elf_backend_data *) (*target_ptr)->backend_data; + if (back->elf_machine_code == i_ehdrp->e_machine + || (back->elf_machine_alt1 != 0 + && back->elf_machine_alt1 == i_ehdrp->e_machine) + || (back->elf_machine_alt2 != 0 + && back->elf_machine_alt2 == i_ehdrp->e_machine)) + { + /* target_ptr is an ELF backend which matches this + object file, so reject the generic ELF target. */ + goto got_wrong_format_error; + } + } + } + + if (i_ehdrp->e_type == ET_EXEC) + abfd->flags |= EXEC_P; + else if (i_ehdrp->e_type == ET_DYN) + abfd->flags |= DYNAMIC; + + if (i_ehdrp->e_phnum > 0) + abfd->flags |= D_PAGED; + + if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0)) + { + /* It's OK if this fails for the generic target. */ + if (ebd->elf_machine_code != EM_NONE) + goto got_no_match; + } + + /* Remember the entry point specified in the ELF file header. */ + bfd_get_start_address (abfd) = i_ehdrp->e_entry; + + /* Allocate space for a copy of the section header table in + internal form, seek to the section header table in the file, + read it in, and convert it to internal form. */ + i_shdrp = ((Elf_Internal_Shdr *) + bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum)); + elf_elfsections (abfd) = ((Elf_Internal_Shdr **) + bfd_alloc (abfd, + sizeof (i_shdrp) * i_ehdrp->e_shnum)); + if (!i_shdrp || !elf_elfsections (abfd)) + goto got_no_match; + if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) != 0) + goto got_no_match; + for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++) + { + if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd) != sizeof (x_shdr)) + goto got_no_match; + elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex); + elf_elfsections (abfd)[shindex] = i_shdrp + shindex; + + /* If the section is loaded, but not page aligned, clear + D_PAGED. */ + if ((i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0 + && i_shdrp[shindex].sh_type != SHT_NOBITS + && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset) + % ebd->maxpagesize) + != 0)) + abfd->flags &= ~D_PAGED; + } + if (i_ehdrp->e_shstrndx) + { + if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx)) + goto got_no_match; + } + + /* Read in the program headers. */ + if (i_ehdrp->e_phnum == 0) + elf_tdata (abfd)->phdr = NULL; + else + { + Elf_Internal_Phdr *i_phdr; + unsigned int i; + + elf_tdata (abfd)->phdr = ((Elf_Internal_Phdr *) + bfd_alloc (abfd, + (i_ehdrp->e_phnum + * sizeof (Elf_Internal_Phdr)))); + if (elf_tdata (abfd)->phdr == NULL) + goto got_no_match; + if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) != 0) + goto got_no_match; + i_phdr = elf_tdata (abfd)->phdr; + for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) + { + Elf_External_Phdr x_phdr; + + if (bfd_read ((PTR) &x_phdr, sizeof x_phdr, 1, abfd) + != sizeof x_phdr) + goto got_no_match; + elf_swap_phdr_in (abfd, &x_phdr, i_phdr); + } + } + + /* Read in the string table containing the names of the sections. We + will need the base pointer to this table later. */ + /* We read this inline now, so that we don't have to go through + bfd_section_from_shdr with it (since this particular strtab is + used to find all of the ELF section names.) */ + + shstrtab = bfd_elf_get_str_section (abfd, i_ehdrp->e_shstrndx); + if (!shstrtab) + goto got_no_match; + + /* Once all of the section headers have been read and converted, we + can start processing them. Note that the first section header is + a dummy placeholder entry, so we ignore it. */ + + for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++) + { + if (! bfd_section_from_shdr (abfd, shindex)) + goto got_no_match; + } + + /* Let the backend double check the format and override global + information. */ + if (ebd->elf_backend_object_p) + { + if ((*ebd->elf_backend_object_p) (abfd) == false) + goto got_wrong_format_error; + } + + /* If we have created any reloc sections that are associated with + debugging sections, mark the reloc sections as debugging as well. */ + for (s = abfd->sections; s != NULL; s = s->next) + { + if ((elf_section_data (s)->this_hdr.sh_type == SHT_REL + || elf_section_data (s)->this_hdr.sh_type == SHT_RELA) + && elf_section_data (s)->this_hdr.sh_info > 0) + { + unsigned long targ_index; + asection *targ_sec; + + targ_index = elf_section_data (s)->this_hdr.sh_info; + targ_sec = bfd_section_from_elf_index (abfd, targ_index); + if (targ_sec != NULL + && (targ_sec->flags & SEC_DEBUGGING) != 0) + s->flags |= SEC_DEBUGGING; + } + } + + return (abfd->xvec); + + got_wrong_format_error: + bfd_set_error (bfd_error_wrong_format); + got_no_match: + if (new_tdata != NULL + && new_tdata->elf_sect_ptr != NULL) + bfd_release (abfd, new_tdata->elf_sect_ptr); + if (i_shdrp != NULL) + bfd_release (abfd, i_shdrp); + if (new_tdata != NULL) + bfd_release (abfd, new_tdata); + elf_tdata (abfd) = preserved_tdata; + return (NULL); +} + +/* ELF .o/exec file writing */ + +/* Write out the relocs. */ + +static void +write_relocs (abfd, sec, data) + bfd *abfd; + asection *sec; + PTR data; +{ + boolean *failedp = (boolean *) data; + Elf_Internal_Shdr *rela_hdr; + Elf_External_Rela *outbound_relocas; + Elf_External_Rel *outbound_relocs; + unsigned int idx; + int use_rela_p = get_elf_backend_data (abfd)->use_rela_p; + asymbol *last_sym = 0; + int last_sym_idx = 0; + + /* If we have already failed, don't do anything. */ + if (*failedp) + return; + + if ((sec->flags & SEC_RELOC) == 0) + return; + + /* The linker backend writes the relocs out itself, and sets the + reloc_count field to zero to inhibit writing them here. Also, + sometimes the SEC_RELOC flag gets set even when there aren't any + relocs. */ + if (sec->reloc_count == 0) + return; + + rela_hdr = &elf_section_data (sec)->rel_hdr; + + rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count; + rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); + if (rela_hdr->contents == NULL) + { + *failedp = true; + return; + } + + /* orelocation has the data, reloc_count has the count... */ + if (use_rela_p) + { + outbound_relocas = (Elf_External_Rela *) rela_hdr->contents; + + for (idx = 0; idx < sec->reloc_count; idx++) + { + Elf_Internal_Rela dst_rela; + Elf_External_Rela *src_rela; + arelent *ptr; + asymbol *sym; + int n; + + ptr = sec->orelocation[idx]; + src_rela = outbound_relocas + idx; + + /* The address of an ELF reloc is section relative for an object + file, and absolute for an executable file or shared library. + The address of a BFD reloc is always section relative. */ + if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) + dst_rela.r_offset = ptr->address; + else + dst_rela.r_offset = ptr->address + sec->vma; + + sym = *ptr->sym_ptr_ptr; + if (sym == last_sym) + n = last_sym_idx; + else if (bfd_is_abs_section (sym->section) && sym->value == 0) + n = STN_UNDEF; + else + { + last_sym = sym; + n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); + if (n < 0) + { + *failedp = true; + return; + } + last_sym_idx = n; + } + + if ((*ptr->sym_ptr_ptr)->the_bfd != NULL + && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec + && ! _bfd_elf_validate_reloc (abfd, ptr)) + { + *failedp = true; + return; + } + + dst_rela.r_info = ELF_R_INFO (n, ptr->howto->type); + + dst_rela.r_addend = ptr->addend; + elf_swap_reloca_out (abfd, &dst_rela, src_rela); + } + } + else + /* REL relocations */ + { + outbound_relocs = (Elf_External_Rel *) rela_hdr->contents; + + for (idx = 0; idx < sec->reloc_count; idx++) + { + Elf_Internal_Rel dst_rel; + Elf_External_Rel *src_rel; + arelent *ptr; + int n; + asymbol *sym; + + ptr = sec->orelocation[idx]; + sym = *ptr->sym_ptr_ptr; + src_rel = outbound_relocs + idx; + + /* The address of an ELF reloc is section relative for an object + file, and absolute for an executable file or shared library. + The address of a BFD reloc is always section relative. */ + if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) + dst_rel.r_offset = ptr->address; + else + dst_rel.r_offset = ptr->address + sec->vma; + + if (sym == last_sym) + n = last_sym_idx; + else + { + last_sym = sym; + n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); + if (n < 0) + { + *failedp = true; + return; + } + last_sym_idx = n; + } + + if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec + && ! _bfd_elf_validate_reloc (abfd, ptr)) + { + *failedp = true; + return; + } + + dst_rel.r_info = ELF_R_INFO (n, ptr->howto->type); + + elf_swap_reloc_out (abfd, &dst_rel, src_rel); + } + } +} + +/* Write out the program headers. */ + +int +elf_write_out_phdrs (abfd, phdr, count) + bfd *abfd; + const Elf_Internal_Phdr *phdr; + int count; +{ + while (count--) + { + Elf_External_Phdr extphdr; + elf_swap_phdr_out (abfd, phdr, &extphdr); + if (bfd_write (&extphdr, sizeof (Elf_External_Phdr), 1, abfd) + != sizeof (Elf_External_Phdr)) + return -1; + phdr++; + } + return 0; +} + +/* Write out the section headers and the ELF file header. */ + +boolean +elf_write_shdrs_and_ehdr (abfd) + bfd *abfd; +{ + Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ + Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ + Elf_External_Shdr *x_shdrp; /* Section header table, external form */ + Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ + unsigned int count; + + i_ehdrp = elf_elfheader (abfd); + i_shdrp = elf_elfsections (abfd); + + /* swap the header before spitting it out... */ + +#if DEBUG & 1 + elf_debug_file (i_ehdrp); +#endif + elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr); + if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 + || (bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) + != sizeof (x_ehdr))) + return false; + + /* at this point we've concocted all the ELF sections... */ + x_shdrp = (Elf_External_Shdr *) + bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum)); + if (!x_shdrp) + return false; + + for (count = 0; count < i_ehdrp->e_shnum; count++) + { +#if DEBUG & 2 + elf_debug_section (count, i_shdrp[count]); +#endif + elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count); + } + if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0 + || (bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd) + != sizeof (*x_shdrp) * i_ehdrp->e_shnum)) + return false; + + /* need to dump the string table too... */ + + return true; +} + +long +elf_slurp_symbol_table (abfd, symptrs, dynamic) + bfd *abfd; + asymbol **symptrs; /* Buffer for generated bfd symbols */ + boolean dynamic; +{ + Elf_Internal_Shdr *hdr; + Elf_Internal_Shdr *verhdr; + unsigned long symcount; /* Number of external ELF symbols */ + elf_symbol_type *sym; /* Pointer to current bfd symbol */ + elf_symbol_type *symbase; /* Buffer for generated bfd symbols */ + Elf_Internal_Sym i_sym; + Elf_External_Sym *x_symp = NULL; + Elf_External_Versym *x_versymp = NULL; + + /* Read each raw ELF symbol, converting from external ELF form to + internal ELF form, and then using the information to create a + canonical bfd symbol table entry. + + Note that we allocate the initial bfd canonical symbol buffer + based on a one-to-one mapping of the ELF symbols to canonical + symbols. We actually use all the ELF symbols, so there will be no + space left over at the end. When we have all the symbols, we + build the caller's pointer vector. */ + + if (! dynamic) + { + hdr = &elf_tdata (abfd)->symtab_hdr; + verhdr = NULL; + } + else + { + hdr = &elf_tdata (abfd)->dynsymtab_hdr; + if (elf_dynversym (abfd) == 0) + verhdr = NULL; + else + verhdr = &elf_tdata (abfd)->dynversym_hdr; + if ((elf_tdata (abfd)->dynverdef_section != 0 + && elf_tdata (abfd)->verdef == NULL) + || (elf_tdata (abfd)->dynverref_section != 0 + && elf_tdata (abfd)->verref == NULL)) + { + if (! _bfd_elf_slurp_version_tables (abfd)) + return -1; + } + } + + if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1) + return -1; + + symcount = hdr->sh_size / sizeof (Elf_External_Sym); + + if (symcount == 0) + sym = symbase = NULL; + else + { + unsigned long i; + + if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1) + return -1; + + symbase = ((elf_symbol_type *) + bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type))); + if (symbase == (elf_symbol_type *) NULL) + return -1; + sym = symbase; + + /* Temporarily allocate room for the raw ELF symbols. */ + x_symp = ((Elf_External_Sym *) + bfd_malloc (symcount * sizeof (Elf_External_Sym))); + if (x_symp == NULL && symcount != 0) + goto error_return; + + if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd) + != symcount * sizeof (Elf_External_Sym)) + goto error_return; + + /* Read the raw ELF version symbol information. */ + + if (verhdr != NULL + && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount) + { + (*_bfd_error_handler) + (_("%s: version count (%ld) does not match symbol count (%ld)"), + abfd->filename, + (long) (verhdr->sh_size / sizeof (Elf_External_Versym)), + symcount); + + /* Slurp in the symbols without the version information, + since that is more helpful than just quitting. */ + verhdr = NULL; + } + + if (verhdr != NULL) + { + if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0) + goto error_return; + + x_versymp = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size); + if (x_versymp == NULL && verhdr->sh_size != 0) + goto error_return; + + if (bfd_read ((PTR) x_versymp, 1, verhdr->sh_size, abfd) + != verhdr->sh_size) + goto error_return; + } + + /* Skip first symbol, which is a null dummy. */ + for (i = 1; i < symcount; i++) + { + elf_swap_symbol_in (abfd, x_symp + i, &i_sym); + memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym)); +#ifdef ELF_KEEP_EXTSYM + memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym)); +#endif + sym->symbol.the_bfd = abfd; + + sym->symbol.name = bfd_elf_string_from_elf_section (abfd, + hdr->sh_link, + i_sym.st_name); + + sym->symbol.value = i_sym.st_value; + + if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERVE) + { + sym->symbol.section = section_from_elf_index (abfd, + i_sym.st_shndx); + if (sym->symbol.section == NULL) + { + /* This symbol is in a section for which we did not + create a BFD section. Just use bfd_abs_section, + although it is wrong. FIXME. */ + sym->symbol.section = bfd_abs_section_ptr; + } + } + else if (i_sym.st_shndx == SHN_ABS) + { + sym->symbol.section = bfd_abs_section_ptr; + } + else if (i_sym.st_shndx == SHN_COMMON) + { + sym->symbol.section = bfd_com_section_ptr; + /* Elf puts the alignment into the `value' field, and + the size into the `size' field. BFD wants to see the + size in the value field, and doesn't care (at the + moment) about the alignment. */ + sym->symbol.value = i_sym.st_size; + } + else if (i_sym.st_shndx == SHN_UNDEF) + { + sym->symbol.section = bfd_und_section_ptr; + } + else + sym->symbol.section = bfd_abs_section_ptr; + + /* If this is a relocateable file, then the symbol value is + already section relative. */ + if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) + sym->symbol.value -= sym->symbol.section->vma; + + switch (ELF_ST_BIND (i_sym.st_info)) + { + case STB_LOCAL: + sym->symbol.flags |= BSF_LOCAL; + break; + case STB_GLOBAL: + if (i_sym.st_shndx != SHN_UNDEF + && i_sym.st_shndx != SHN_COMMON) + sym->symbol.flags |= BSF_GLOBAL; + break; + case STB_WEAK: + sym->symbol.flags |= BSF_WEAK; + break; + } + + switch (ELF_ST_TYPE (i_sym.st_info)) + { + case STT_SECTION: + sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING; + break; + case STT_FILE: + sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING; + break; + case STT_FUNC: + sym->symbol.flags |= BSF_FUNCTION; + break; + case STT_OBJECT: + sym->symbol.flags |= BSF_OBJECT; + break; + } + + if (dynamic) + sym->symbol.flags |= BSF_DYNAMIC; + + if (x_versymp != NULL) + { + Elf_Internal_Versym iversym; + + _bfd_elf_swap_versym_in (abfd, x_versymp + i, &iversym); + sym->version = iversym.vs_vers; + } + + /* Do some backend-specific processing on this symbol. */ + { + struct elf_backend_data *ebd = get_elf_backend_data (abfd); + if (ebd->elf_backend_symbol_processing) + (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol); + } + + sym++; + } + } + + /* Do some backend-specific processing on this symbol table. */ + { + struct elf_backend_data *ebd = get_elf_backend_data (abfd); + if (ebd->elf_backend_symbol_table_processing) + (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount); + } + + /* We rely on the zalloc to clear out the final symbol entry. */ + + symcount = sym - symbase; + + /* Fill in the user's symbol pointer vector if needed. */ + if (symptrs) + { + long l = symcount; + + sym = symbase; + while (l-- > 0) + { + *symptrs++ = &sym->symbol; + sym++; + } + *symptrs = 0; /* Final null pointer */ + } + + if (x_versymp != NULL) + free (x_versymp); + if (x_symp != NULL) + free (x_symp); + return symcount; +error_return: + if (x_versymp != NULL) + free (x_versymp); + if (x_symp != NULL) + free (x_symp); + return -1; +} + +/* Read in and swap the external relocs. */ + +static boolean +elf_slurp_reloc_table (abfd, asect, symbols, dynamic) + bfd *abfd; + asection *asect; + asymbol **symbols; + boolean dynamic; +{ + struct elf_backend_data * const ebd = get_elf_backend_data (abfd); + struct bfd_elf_section_data * const d = elf_section_data (asect); + Elf_Internal_Shdr *rel_hdr; + bfd_size_type reloc_count; + PTR allocated = NULL; + bfd_byte *native_relocs; + arelent *relents; + arelent *relent; + unsigned int i; + int entsize; + + if (asect->relocation != NULL) + return true; + + if (! dynamic) + { + if ((asect->flags & SEC_RELOC) == 0 + || asect->reloc_count == 0) + return true; + + rel_hdr = &d->rel_hdr; + reloc_count = asect->reloc_count; + + BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset + && reloc_count == rel_hdr->sh_size / rel_hdr->sh_entsize); + } + else + { + if (asect->_raw_size == 0) + return true; + + rel_hdr = &d->this_hdr; + reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; + } + + allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size); + if (allocated == NULL) + goto error_return; + + if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 + || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) + != rel_hdr->sh_size)) + goto error_return; + + native_relocs = (bfd_byte *) allocated; + + relents = (arelent *) bfd_alloc (abfd, reloc_count * sizeof (arelent)); + if (relents == NULL) + goto error_return; + + entsize = rel_hdr->sh_entsize; + BFD_ASSERT (entsize == sizeof (Elf_External_Rel) + || entsize == sizeof (Elf_External_Rela)); + + for (i = 0, relent = relents; + i < reloc_count; + i++, relent++, native_relocs += entsize) + { + Elf_Internal_Rela rela; + Elf_Internal_Rel rel; + + if (entsize == sizeof (Elf_External_Rela)) + elf_swap_reloca_in (abfd, (Elf_External_Rela *) native_relocs, &rela); + else + { + elf_swap_reloc_in (abfd, (Elf_External_Rel *) native_relocs, &rel); + rela.r_offset = rel.r_offset; + rela.r_info = rel.r_info; + rela.r_addend = 0; + } + + /* The address of an ELF reloc is section relative for an object + file, and absolute for an executable file or shared library. + The address of a normal BFD reloc is always section relative, + and the address of a dynamic reloc is absolute.. */ + if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) + relent->address = rela.r_offset; + else + relent->address = rela.r_offset - asect->vma; + + if (ELF_R_SYM (rela.r_info) == 0) + relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; + else + { + asymbol **ps, *s; + + ps = symbols + ELF_R_SYM (rela.r_info) - 1; + s = *ps; + + /* Canonicalize ELF section symbols. FIXME: Why? */ + if ((s->flags & BSF_SECTION_SYM) == 0) + relent->sym_ptr_ptr = ps; + else + relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; + } + + relent->addend = rela.r_addend; + + if (entsize == sizeof (Elf_External_Rela)) + (*ebd->elf_info_to_howto) (abfd, relent, &rela); + else + (*ebd->elf_info_to_howto_rel) (abfd, relent, &rel); + } + + asect->relocation = relents; + + if (allocated != NULL) + free (allocated); + + return true; + + error_return: + if (allocated != NULL) + free (allocated); + return false; +} + +#ifdef DEBUG +static void +elf_debug_section (num, hdr) + int num; + Elf_Internal_Shdr *hdr; +{ + fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, + hdr->bfd_section != NULL ? hdr->bfd_section->name : "", + (long) hdr); + fprintf (stderr, + "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n", + (long) hdr->sh_name, + (long) hdr->sh_type, + (long) hdr->sh_flags); + fprintf (stderr, + "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n", + (long) hdr->sh_addr, + (long) hdr->sh_offset, + (long) hdr->sh_size); + fprintf (stderr, + "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n", + (long) hdr->sh_link, + (long) hdr->sh_info, + (long) hdr->sh_addralign); + fprintf (stderr, "sh_entsize = %ld\n", + (long) hdr->sh_entsize); + fflush (stderr); +} + +static void +elf_debug_file (ehdrp) + Elf_Internal_Ehdr *ehdrp; +{ + fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry); + fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff); + fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum); + fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize); + fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff); + fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum); + fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize); +} + +static char * +elf_symbol_flags (flags) + flagword flags; +{ + static char buffer[1024]; + + buffer[0] = '\0'; + if (flags & BSF_LOCAL) + strcat (buffer, " local"); + + if (flags & BSF_GLOBAL) + strcat (buffer, " global"); + + if (flags & BSF_DEBUGGING) + strcat (buffer, " debug"); + + if (flags & BSF_FUNCTION) + strcat (buffer, " function"); + + if (flags & BSF_KEEP) + strcat (buffer, " keep"); + + if (flags & BSF_KEEP_G) + strcat (buffer, " keep_g"); + + if (flags & BSF_WEAK) + strcat (buffer, " weak"); + + if (flags & BSF_SECTION_SYM) + strcat (buffer, " section-sym"); + + if (flags & BSF_OLD_COMMON) + strcat (buffer, " old-common"); + + if (flags & BSF_NOT_AT_END) + strcat (buffer, " not-at-end"); + + if (flags & BSF_CONSTRUCTOR) + strcat (buffer, " constructor"); + + if (flags & BSF_WARNING) + strcat (buffer, " warning"); + + if (flags & BSF_INDIRECT) + strcat (buffer, " indirect"); + + if (flags & BSF_FILE) + strcat (buffer, " file"); + + if (flags & DYNAMIC) + strcat (buffer, " dynamic"); + + if (flags & ~(BSF_LOCAL + | BSF_GLOBAL + | BSF_DEBUGGING + | BSF_FUNCTION + | BSF_KEEP + | BSF_KEEP_G + | BSF_WEAK + | BSF_SECTION_SYM + | BSF_OLD_COMMON + | BSF_NOT_AT_END + | BSF_CONSTRUCTOR + | BSF_WARNING + | BSF_INDIRECT + | BSF_FILE + | BSF_DYNAMIC)) + strcat (buffer, " unknown-bits"); + + return buffer; +} +#endif + +#include "elfcore.h" +#include "elflink.h" + +/* Size-dependent data and functions. */ +const struct elf_size_info NAME(_bfd_elf,size_info) = { + sizeof (Elf_External_Ehdr), + sizeof (Elf_External_Phdr), + sizeof (Elf_External_Shdr), + sizeof (Elf_External_Rel), + sizeof (Elf_External_Rela), + sizeof (Elf_External_Sym), + sizeof (Elf_External_Dyn), + sizeof (Elf_External_Note), + + ARCH_SIZE, FILE_ALIGN, + ELFCLASS, EV_CURRENT, + elf_write_out_phdrs, + elf_write_shdrs_and_ehdr, + write_relocs, + elf_swap_symbol_out, + elf_slurp_reloc_table, + elf_slurp_symbol_table, + elf_swap_dyn_in +}; |