diff options
Diffstat (limited to 'bfd/elf32-i386.c')
| -rw-r--r-- | bfd/elf32-i386.c | 114 |
1 files changed, 86 insertions, 28 deletions
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index b71d78eb073..e26ee798afb 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -2617,36 +2617,40 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, BFD_ASSERT (rel->r_offset >= 1); val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); - if (val != 0xa1) - { - BFD_ASSERT (rel->r_offset >= 2); - type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); - } if (val == 0xa1) { /* movl foo, %eax. */ - bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 2); - } - else if (type == 0x8b) - { - /* movl */ - BFD_ASSERT ((val & 0xc7) == 0x05); - bfd_put_8 (output_bfd, 0xc7, - contents + rel->r_offset - 2); - bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), - contents + rel->r_offset - 1); + bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1); } - else if (type == 0x03) + else { - /* addl */ - BFD_ASSERT ((val & 0xc7) == 0x05); - bfd_put_8 (output_bfd, 0x81, - contents + rel->r_offset - 2); - bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), - contents + rel->r_offset - 1); + BFD_ASSERT (rel->r_offset >= 2); + type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); + switch (type) + { + case 0x8b: + /* movl */ + BFD_ASSERT ((val & 0xc7) == 0x05); + bfd_put_8 (output_bfd, 0xc7, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, + 0xc0 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + break; + case 0x03: + /* addl */ + BFD_ASSERT ((val & 0xc7) == 0x05); + bfd_put_8 (output_bfd, 0x81, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, + 0xc0 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + break; + default: + BFD_FAIL (); + break; + } } - else - BFD_FAIL (); bfd_put_32 (output_bfd, -tpoff (info, relocation), contents + rel->r_offset); continue; @@ -2926,7 +2930,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, break; case R_386_TLS_LDO_32: - if (info->shared) + if (info->shared || (input_section->flags & SEC_CODE) == 0) relocation -= dtpoff_base (info); else /* When converting LDO to LE, we must negate. */ @@ -3344,13 +3348,11 @@ elf_i386_finish_dynamic_sections (output_bfd, info) return true; } -#ifndef ELF_ARCH #define TARGET_LITTLE_SYM bfd_elf32_i386_vec #define TARGET_LITTLE_NAME "elf32-i386" #define ELF_ARCH bfd_arch_i386 #define ELF_MACHINE_CODE EM_386 #define ELF_MAXPAGESIZE 0x1000 -#endif /* ELF_ARCH */ #define elf_backend_can_gc_sections 1 #define elf_backend_can_refcount 1 @@ -3385,6 +3387,62 @@ elf_i386_finish_dynamic_sections (output_bfd, info) #define elf_backend_relocate_section elf_i386_relocate_section #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections -#ifndef ELF32_I386_C_INCLUDED #include "elf32-target.h" + +/* FreeBSD support. */ + +#undef TARGET_LITTLE_SYM +#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec +#undef TARGET_LITTLE_NAME +#define TARGET_LITTLE_NAME "elf32-i386-freebsd" + +/* The kernel recognizes executables as valid only if they carry a + "FreeBSD" label in the ELF header. So we put this label on all + executables and (for simplicity) also all other object files. */ + +static void elf_i386_post_process_headers + PARAMS ((bfd *, struct bfd_link_info *)); + +static void +elf_i386_post_process_headers (abfd, link_info) + bfd *abfd; + struct bfd_link_info *link_info ATTRIBUTE_UNUSED; +{ + Elf_Internal_Ehdr *i_ehdrp; + + i_ehdrp = elf_elfheader (abfd); + + /* Put an ABI label supported by FreeBSD >= 4.1. */ + i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; +#ifdef OLD_FREEBSD_ABI_LABEL + /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ + memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); #endif +} + +#undef elf_backend_post_process_headers +#define elf_backend_post_process_headers elf_i386_post_process_headers + +#define elf32_bed elf32_i386_fbsd_bed + +#include "elf32-target.h" + +#undef elf_backend_post_process_headers +#undef elf32_bed + +/* QNX support. */ +#include "elf32-qnx.h" + +#undef TARGET_LITTLE_SYM +#define TARGET_LITTLE_SYM bfd_elf32_i386qnx_vec +#undef TARGET_LITTLE_NAME +#define TARGET_LITTLE_NAME "elf32-i386-nto" + +#define elf32_bed elf32_i386_qnx_bed + +#include "elf32-target.h" + +#undef elf_backend_set_nonloadable_filepos +#undef elf_backend_is_contained_by_filepos +#undef elf_backend_copy_private_bfd_data_p +#undef elf32_bed |