diff options
Diffstat (limited to 'bfd/elf32-nios2.c')
| -rw-r--r-- | bfd/elf32-nios2.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/bfd/elf32-nios2.c b/bfd/elf32-nios2.c index 4f992bf..6a1372b 100644 --- a/bfd/elf32-nios2.c +++ b/bfd/elf32-nios2.c @@ -2038,6 +2038,72 @@ nios2_elf32_build_stubs (struct bfd_link_info *info) } +#define is_nios2_elf(bfd) \ + (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ + && elf_object_id (bfd) == NIOS2_ELF_DATA) + +/* Merge backend specific data from an object file to the output + object file when linking. */ + +static bfd_boolean +nios2_elf32_merge_private_bfd_data (bfd *ibfd, bfd *obfd) +{ + flagword old_flags; + flagword new_flags; + + if (!is_nios2_elf (ibfd) || !is_nios2_elf (obfd)) + return TRUE; + + /* Check if we have the same endianness. */ + if (! _bfd_generic_verify_endian_match (ibfd, obfd)) + return FALSE; + + new_flags = elf_elfheader (ibfd)->e_flags; + old_flags = elf_elfheader (obfd)->e_flags; + if (!elf_flags_init (obfd)) + { + /* First call, no flags set. */ + elf_flags_init (obfd) = TRUE; + elf_elfheader (obfd)->e_flags = new_flags; + + switch (new_flags) + { + default: + case EF_NIOS2_ARCH_R1: + bfd_default_set_arch_mach (obfd, bfd_arch_nios2, bfd_mach_nios2r1); + break; + case EF_NIOS2_ARCH_R2: + if (bfd_big_endian (ibfd)) + { + (*_bfd_error_handler) + (_("error: %B: Big-endian R2 is not supported."), ibfd); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + bfd_default_set_arch_mach (obfd, bfd_arch_nios2, bfd_mach_nios2r2); + break; + } + } + + /* Incompatible flags. */ + else if (new_flags != old_flags) + { + /* So far, the only incompatible flags denote incompatible + architectures. */ + (*_bfd_error_handler) + (_("error: %B: Conflicting CPU architectures %d/%d"), + ibfd, new_flags, old_flags); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* Merge Tag_compatibility attributes and any common GNU ones. */ + _bfd_elf_merge_object_attributes (ibfd, obfd); + + return TRUE; +} + + /* Implement bfd_elf32_bfd_reloc_type_lookup: Given a BFD reloc type, return a howto structure. */ static reloc_howto_type * @@ -3707,6 +3773,29 @@ nios2_elf32_copy_indirect_symbol (struct bfd_link_info *info, _bfd_elf_link_hash_copy_indirect (info, dir, ind); } +/* Set the right machine number for a NIOS2 ELF file. */ + +static bfd_boolean +nios2_elf32_object_p (bfd *abfd) +{ + unsigned long mach; + + mach = elf_elfheader (abfd)->e_flags; + + switch (mach) + { + default: + case EF_NIOS2_ARCH_R1: + bfd_default_set_arch_mach (abfd, bfd_arch_nios2, bfd_mach_nios2r1); + break; + case EF_NIOS2_ARCH_R2: + bfd_default_set_arch_mach (abfd, bfd_arch_nios2, bfd_mach_nios2r2); + break; + } + + return TRUE; +} + /* Implement elf_backend_check_relocs: Look through the relocs for a section during the first phase. */ static bfd_boolean @@ -5256,6 +5345,9 @@ const struct bfd_elf_special_section elf32_nios2_special_sections[] = #define bfd_elf32_bfd_link_hash_table_create \ nios2_elf32_link_hash_table_create +#define bfd_elf32_bfd_merge_private_bfd_data \ + nios2_elf32_merge_private_bfd_data + /* Relocation table lookup macros. */ #define bfd_elf32_bfd_reloc_type_lookup nios2_elf32_bfd_reloc_type_lookup @@ -5292,6 +5384,7 @@ const struct bfd_elf_special_section elf32_nios2_special_sections[] = #define elf_backend_size_dynamic_sections nios2_elf32_size_dynamic_sections #define elf_backend_add_symbol_hook nios2_elf_add_symbol_hook #define elf_backend_copy_indirect_symbol nios2_elf32_copy_indirect_symbol +#define elf_backend_object_p nios2_elf32_object_p #define elf_backend_grok_prstatus nios2_grok_prstatus #define elf_backend_grok_psinfo nios2_grok_psinfo |