X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-mt.c;h=389f0e183a0d2abe625218f882acaa0e1404aad1;hb=d49e5065ed43ec88627fd8cc6ab9e45fcc0e538a;hp=0b2bb26bf45d86f7fcfb559445be96dd961b6e63;hpb=ab96bf03fd98b6f68cd213ac81f52be3aca9c435;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-mt.c b/bfd/elf32-mt.c index 0b2bb26bf4..389f0e183a 100644 --- a/bfd/elf32-mt.c +++ b/bfd/elf32-mt.c @@ -1,12 +1,11 @@ /* Morpho Technologies MT specific support for 32-bit ELF - Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007 - Free Software Foundation, Inc. + Copyright (C) 2001-2020 Free Software Foundation, Inc. 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 + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -16,146 +15,147 @@ 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. */ + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/mt.h" /* Prototypes. */ -static reloc_howto_type * mt_reloc_type_lookup +static reloc_howto_type * mt_reloc_type_lookup (bfd *, bfd_reloc_code_real_type); -static void mt_info_to_howto_rela +static bfd_boolean mt_info_to_howto_rela (bfd *, arelent *, Elf_Internal_Rela *); static bfd_reloc_status_type mt_elf_relocate_hi16 (bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma); static bfd_reloc_status_type mt_final_link_relocate - (reloc_howto_type *, bfd *, asection *, bfd_byte *, + (reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma); static bfd_boolean mt_elf_relocate_section - (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); /* Relocation tables. */ static reloc_howto_type mt_elf_howto_table [] = { /* This reloc does nothing. */ - HOWTO (R_MT_NONE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MT_NONE", /* name */ - FALSE, /* partial_inplace */ - 0 , /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ + HOWTO (R_MT_NONE, /* type */ + 0, /* rightshift */ + 3, /* 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_MT_NONE", /* name */ + FALSE, /* partial_inplace */ + 0 , /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ /* A 16 bit absolute relocation. */ - HOWTO (R_MT_16, /* 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_MT_16", /* name */ - FALSE, /* partial_inplace */ - 0 , /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ + HOWTO (R_MT_16, /* 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_MT_16", /* name */ + FALSE, /* partial_inplace */ + 0 , /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ /* A 32 bit absolute relocation. */ - HOWTO (R_MT_32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MT_32", /* name */ - FALSE, /* partial_inplace */ - 0 , /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ + HOWTO (R_MT_32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MT_32", /* name */ + FALSE, /* partial_inplace */ + 0 , /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ /* A 32 bit pc-relative relocation. */ - HOWTO (R_MT_32_PCREL, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_MT_32_PCREL", /* name */ - FALSE, /* partial_inplace */ - 0 , /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ + HOWTO (R_MT_32_PCREL, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_MT_32_PCREL", /* name */ + FALSE, /* partial_inplace */ + 0 , /* src_mask */ + 0xffffffff, /* dst_mask */ + TRUE), /* pcrel_offset */ /* A 16 bit pc-relative relocation. */ - HOWTO (R_MT_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_MT_PC16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ + HOWTO (R_MT_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_MT_PC16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ /* high 16 bits of symbol value. */ - HOWTO (R_MT_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_MT_HI16", /* name */ - FALSE, /* partial_inplace */ - 0xffff0000, /* src_mask */ - 0xffff0000, /* dst_mask */ - FALSE), /* pcrel_offset */ + HOWTO (R_MT_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_MT_HI16", /* name */ + FALSE, /* partial_inplace */ + 0xffff0000, /* src_mask */ + 0xffff0000, /* dst_mask */ + FALSE), /* pcrel_offset */ /* Low 16 bits of symbol value. */ - HOWTO (R_MT_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_MT_LO16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ + HOWTO (R_MT_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_MT_LO16", /* name */ + FALSE, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ }; /* Map BFD reloc types to MT ELF reloc types. */ static reloc_howto_type * mt_reloc_type_lookup - (bfd * abfd ATTRIBUTE_UNUSED, + (bfd * abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code) { /* Note that the mt_elf_howto_table is indxed by the R_ @@ -187,12 +187,28 @@ mt_reloc_type_lookup return NULL; } +static reloc_howto_type * +mt_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, + const char *r_name) +{ + unsigned int i; + + for (i = 0; + i < sizeof (mt_elf_howto_table) / sizeof (mt_elf_howto_table[0]); + i++) + if (mt_elf_howto_table[i].name != NULL + && strcasecmp (mt_elf_howto_table[i].name, r_name) == 0) + return &mt_elf_howto_table[i]; + + return NULL; +} + bfd_reloc_status_type mt_elf_relocate_hi16 - (bfd * input_bfd, + (bfd * input_bfd, Elf_Internal_Rela * relhi, - bfd_byte * contents, - bfd_vma value) + bfd_byte * contents, + bfd_vma value) { bfd_vma insn; @@ -211,16 +227,24 @@ mt_elf_relocate_hi16 /* Set the howto pointer for a MT ELF reloc. */ -static void -mt_info_to_howto_rela - (bfd * abfd ATTRIBUTE_UNUSED, - arelent * cache_ptr, - Elf_Internal_Rela * dst) +static bfd_boolean +mt_info_to_howto_rela (bfd * abfd, + arelent * cache_ptr, + Elf_Internal_Rela * dst) { unsigned int r_type; r_type = ELF32_R_TYPE (dst->r_info); + if (r_type >= (unsigned int) R_MT_max) + { + /* xgettext:c-format */ + _bfd_error_handler (_("%pB: unsupported relocation type %#x"), + abfd, r_type); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } cache_ptr->howto = & mt_elf_howto_table [r_type]; + return TRUE; } /* Perform a single relocation. By default we use the standard BFD @@ -228,12 +252,12 @@ mt_info_to_howto_rela static bfd_reloc_status_type mt_final_link_relocate - (reloc_howto_type * howto, - bfd * input_bfd, - asection * input_section, - bfd_byte * contents, + (reloc_howto_type * howto, + bfd * input_bfd, + asection * input_section, + bfd_byte * contents, Elf_Internal_Rela * rel, - bfd_vma relocation) + bfd_vma relocation) { return _bfd_final_link_relocate (howto, input_bfd, input_section, contents, rel->r_offset, @@ -275,19 +299,19 @@ mt_final_link_relocate static bfd_boolean mt_elf_relocate_section - (bfd * output_bfd ATTRIBUTE_UNUSED, + (bfd * output_bfd ATTRIBUTE_UNUSED, struct bfd_link_info * info, - bfd * input_bfd, - asection * input_section, - bfd_byte * contents, + bfd * input_bfd, + asection * input_section, + bfd_byte * contents, Elf_Internal_Rela * relocs, - Elf_Internal_Sym * local_syms, - asection ** local_sections) + Elf_Internal_Sym * local_syms, + asection ** local_sections) { - Elf_Internal_Shdr * symtab_hdr; + Elf_Internal_Shdr * symtab_hdr; struct elf_link_hash_entry ** sym_hashes; - Elf_Internal_Rela * rel; - Elf_Internal_Rela * relend; + Elf_Internal_Rela * rel; + Elf_Internal_Rela * relend; symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; sym_hashes = elf_sym_hashes (input_bfd); @@ -295,16 +319,16 @@ mt_elf_relocate_section for (rel = relocs; rel < relend; rel ++) { - reloc_howto_type * howto; - unsigned long r_symndx; - Elf_Internal_Sym * sym; - asection * sec; + reloc_howto_type * howto; + unsigned long r_symndx; + Elf_Internal_Sym * sym; + asection * sec; struct elf_link_hash_entry * h; - bfd_vma relocation; - bfd_reloc_status_type r; - const char * name = NULL; - int r_type; - + bfd_vma relocation; + bfd_reloc_status_type r; + const char * name = NULL; + int r_type; + r_type = ELF32_R_TYPE (rel->r_info); r_symndx = ELF32_R_SYM (rel->r_info); @@ -313,55 +337,48 @@ mt_elf_relocate_section h = NULL; sym = NULL; sec = NULL; - + if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; sec = local_sections [r_symndx]; relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - + name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name); - name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; + name = name == NULL ? bfd_section_name (sec) : name; } else { bfd_boolean unresolved_reloc; - bfd_boolean warned; + bfd_boolean warned, ignored; RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, r_symndx, symtab_hdr, sym_hashes, h, sec, relocation, - unresolved_reloc, warned); + unresolved_reloc, warned, ignored); name = h->root.root.string; } - if (sec != NULL && elf_discarded_section (sec)) - { - /* For relocs against symbols from removed linkonce sections, - or sections discarded by a linker script, we just want the - section contents zeroed. Avoid any special processing. */ - _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); - rel->r_info = 0; - rel->r_addend = 0; - continue; - } + if (sec != NULL && discarded_section (sec)) + RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, + rel, 1, relend, howto, 0, contents); - if (info->relocatable) + if (bfd_link_relocatable (info)) continue; /* Finally, the sole MT-specific part. */ switch (r_type) - { - case R_MT_HI16: - r = mt_elf_relocate_hi16 (input_bfd, rel, contents, relocation); - break; + { + case R_MT_HI16: + r = mt_elf_relocate_hi16 (input_bfd, rel, contents, relocation); + break; default: - r = mt_final_link_relocate (howto, input_bfd, input_section, - contents, rel, relocation); - break; - } + r = mt_final_link_relocate (howto, input_bfd, input_section, + contents, rel, relocation); + break; + } if (r != bfd_reloc_ok) @@ -371,16 +388,16 @@ mt_elf_relocate_section switch (r) { case bfd_reloc_overflow: - r = info->callbacks->reloc_overflow + (*info->callbacks->reloc_overflow) (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, input_bfd, input_section, rel->r_offset); break; - + case bfd_reloc_undefined: - r = info->callbacks->undefined_symbol + (*info->callbacks->undefined_symbol) (info, name, input_bfd, input_section, rel->r_offset, TRUE); break; - + case bfd_reloc_outofrange: msg = _("internal error: out of range error"); break; @@ -395,11 +412,8 @@ mt_elf_relocate_section } if (msg) - r = info->callbacks->warning - (info, msg, name, input_bfd, input_section, rel->r_offset); - - if (! r) - return FALSE; + (*info->callbacks->warning) (info, msg, name, input_bfd, + input_section, rel->r_offset); } } @@ -409,38 +423,34 @@ mt_elf_relocate_section /* Look through the relocs for a section during the first phase. Since we don't do .gots or .plts, we just need to consider the virtual table relocs for gc. */ - + static bfd_boolean mt_elf_check_relocs - (bfd * abfd, + (bfd * abfd, struct bfd_link_info * info, - asection * sec, + asection * sec, const Elf_Internal_Rela * relocs) { - Elf_Internal_Shdr * symtab_hdr; + Elf_Internal_Shdr * symtab_hdr; struct elf_link_hash_entry ** sym_hashes; - struct elf_link_hash_entry ** sym_hashes_end; - const Elf_Internal_Rela * rel; - const Elf_Internal_Rela * rel_end; - - if (info->relocatable) + const Elf_Internal_Rela * rel; + const Elf_Internal_Rela * rel_end; + + if (bfd_link_relocatable (info)) return TRUE; - + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); - if (!elf_bad_symtab (abfd)) - sym_hashes_end -= symtab_hdr->sh_info; - + rel_end = relocs + sec->reloc_count; for (rel = relocs; rel < rel_end; rel++) { struct elf_link_hash_entry *h; unsigned long r_symndx; - + r_symndx = ELF32_R_SYM (rel->r_info); if (r_symndx < symtab_hdr->sh_info) - h = NULL; + h = NULL; else { h = sym_hashes[r_symndx - symtab_hdr->sh_info]; @@ -487,32 +497,18 @@ mt_elf_set_private_flags (bfd * abfd, return TRUE; } -static bfd_boolean -mt_elf_copy_private_bfd_data (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_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. */ static bfd_boolean -mt_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd) +mt_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) { + bfd *obfd = info->output_bfd; flagword old_flags, new_flags; bfd_boolean ok = TRUE; - /* Check if we have the same endianess. */ - if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) + /* Check if we have the same endianness. */ + if (!_bfd_generic_verify_endian_match (ibfd, info)) return FALSE; /* If they're not both mt, then merging is meaningless, so just @@ -526,7 +522,7 @@ mt_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd) old_flags = elf_elfheader (obfd)->e_flags; #ifdef DEBUG - _bfd_error_handler ("%B: old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s", + _bfd_error_handler ("%pB: old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s", ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no"); #endif @@ -541,7 +537,7 @@ mt_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd) MS2 are not subsets of each other. */ ok = FALSE; } - + if (ok) { obfd->arch_info = ibfd->arch_info; @@ -558,12 +554,12 @@ mt_elf_print_private_bfd_data (bfd * abfd, void * ptr) flagword flags; BFD_ASSERT (abfd != NULL && ptr != NULL); - + /* Print normal ELF private data. */ _bfd_elf_print_private_bfd_data (abfd, ptr); flags = elf_elfheader (abfd)->e_flags; - fprintf (file, _("private flags = 0x%lx:"), (long)flags); + fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); switch (flags & EF_MT_CPU_MASK) { @@ -579,28 +575,28 @@ mt_elf_print_private_bfd_data (bfd * abfd, void * ptr) } -#define TARGET_BIG_SYM bfd_elf32_mt_vec -#define TARGET_BIG_NAME "elf32-mt" +#define TARGET_BIG_SYM mt_elf32_vec +#define TARGET_BIG_NAME "elf32-mt" #define ELF_ARCH bfd_arch_mt #define ELF_MACHINE_CODE EM_MT -#define ELF_MAXPAGESIZE 1 /* No pages on the MT. */ +#define ELF_MAXPAGESIZE 1 /* No pages on the MT. */ #define elf_info_to_howto_rel NULL #define elf_info_to_howto mt_info_to_howto_rela #define elf_backend_relocate_section mt_elf_relocate_section -#define bfd_elf32_bfd_reloc_type_lookup mt_reloc_type_lookup +#define bfd_elf32_bfd_reloc_type_lookup mt_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup mt_reloc_name_lookup -#define elf_backend_check_relocs mt_elf_check_relocs -#define elf_backend_object_p mt_elf_object_p +#define elf_backend_check_relocs mt_elf_check_relocs +#define elf_backend_object_p mt_elf_object_p #define elf_backend_rela_normal 1 #define elf_backend_can_gc_sections 1 #define bfd_elf32_bfd_set_private_flags mt_elf_set_private_flags -#define bfd_elf32_bfd_copy_private_bfd_data mt_elf_copy_private_bfd_data #define bfd_elf32_bfd_merge_private_bfd_data mt_elf_merge_private_bfd_data #define bfd_elf32_bfd_print_private_bfd_data mt_elf_print_private_bfd_data