diff options
Diffstat (limited to 'binutils-2.17/bfd/elf32-mt.c')
| -rw-r--r-- | binutils-2.17/bfd/elf32-mt.c | 648 |
1 files changed, 0 insertions, 648 deletions
diff --git a/binutils-2.17/bfd/elf32-mt.c b/binutils-2.17/bfd/elf32-mt.c deleted file mode 100644 index 320ef1e3..00000000 --- a/binutils-2.17/bfd/elf32-mt.c +++ /dev/null @@ -1,648 +0,0 @@ -/* Morpho Technologies MT specific support for 32-bit ELF - Copyright 2001, 2002, 2003, 2004, 2005 - 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 - (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. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/mt.h" - -/* Prototypes. */ -static reloc_howto_type * mt_reloc_type_lookup - (bfd *, bfd_reloc_code_real_type); - -static void 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 *, - Elf_Internal_Rela *, bfd_vma); - -static bfd_boolean mt_elf_relocate_section - (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 */ - - /* 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 */ - - /* 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 */ - - /* 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 */ - - /* 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 */ - - /* 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 */ - - /* 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 */ -}; - -/* Map BFD reloc types to MT ELF reloc types. */ - -static reloc_howto_type * -mt_reloc_type_lookup - (bfd * abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - /* Note that the mt_elf_howto_table is indxed by the R_ - constants. Thus, the order that the howto records appear in the - table *must* match the order of the relocation types defined in - include/elf/mt.h. */ - - switch (code) - { - case BFD_RELOC_NONE: - return &mt_elf_howto_table[ (int) R_MT_NONE]; - case BFD_RELOC_16: - return &mt_elf_howto_table[ (int) R_MT_16]; - case BFD_RELOC_32: - return &mt_elf_howto_table[ (int) R_MT_32]; - case BFD_RELOC_32_PCREL: - return &mt_elf_howto_table[ (int) R_MT_32_PCREL]; - case BFD_RELOC_16_PCREL: - return &mt_elf_howto_table[ (int) R_MT_PC16]; - case BFD_RELOC_HI16: - return &mt_elf_howto_table[ (int) R_MT_HI16]; - case BFD_RELOC_LO16: - return &mt_elf_howto_table[ (int) R_MT_LO16]; - - default: - /* Pacify gcc -Wall. */ - return NULL; - } - return NULL; -} - -bfd_reloc_status_type -mt_elf_relocate_hi16 - (bfd * input_bfd, - Elf_Internal_Rela * relhi, - bfd_byte * contents, - bfd_vma value) -{ - bfd_vma insn; - - insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); - - value += relhi->r_addend; - value >>= 16; - insn = ((insn & ~0xFFFF) | value); - - bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); - return bfd_reloc_ok; -} - -/* XXX: The following code is the result of a cut&paste. This unfortunate - practice is very widespread in the various target back-end files. */ - -/* 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) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (dst->r_info); - cache_ptr->howto = & mt_elf_howto_table [r_type]; -} - -/* Perform a single relocation. By default we use the standard BFD - routines. */ - -static bfd_reloc_status_type -mt_final_link_relocate - (reloc_howto_type * howto, - bfd * input_bfd, - asection * input_section, - bfd_byte * contents, - Elf_Internal_Rela * rel, - bfd_vma relocation) -{ - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); -} - -/* Relocate a MT ELF section. - There is some attempt to make this function usable for many architectures, - both USE_REL and USE_RELA ['twould be nice if such a critter existed], - if only to serve as a learning tool. - - The RELOCATE_SECTION function is called by the new ELF backend linker - to handle the relocations for a section. - - The relocs are always passed as Rela structures; if the section - actually uses Rel structures, the r_addend field will always be - zero. - - This function is responsible for adjusting the section contents as - necessary, and (if using Rela relocs and generating a relocatable - output file) adjusting the reloc addend as necessary. - - This function does not have to worry about setting the reloc - address or the reloc symbol index. - - LOCAL_SYMS is a pointer to the swapped in local symbols. - - LOCAL_SECTIONS is an array giving the section in the input file - corresponding to the st_shndx field of each local symbol. - - The global hash table entry for the global symbols can be found - via elf_sym_hashes (input_bfd). - - When generating relocatable output, this function must handle - STB_LOCAL/STT_SECTION symbols specially. The output symbol is - going to be the section symbol corresponding to the output - section, which means that the addend must be adjusted - accordingly. */ - -static bfd_boolean -mt_elf_relocate_section - (bfd * output_bfd ATTRIBUTE_UNUSED, - struct bfd_link_info * info, - bfd * input_bfd, - asection * input_section, - bfd_byte * contents, - Elf_Internal_Rela * relocs, - Elf_Internal_Sym * local_syms, - asection ** local_sections) -{ - Elf_Internal_Shdr * symtab_hdr; - struct elf_link_hash_entry ** sym_hashes; - Elf_Internal_Rela * rel; - Elf_Internal_Rela * relend; - - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - relend = relocs + input_section->reloc_count; - - for (rel = relocs; rel < relend; rel ++) - { - 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; - - r_type = ELF32_R_TYPE (rel->r_info); - - r_symndx = ELF32_R_SYM (rel->r_info); - - /* This is a final link. */ - howto = mt_elf_howto_table + ELF32_R_TYPE (rel->r_info); - 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; - } - else - { - bfd_boolean unresolved_reloc; - bfd_boolean warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - - name = h->root.root.string; - } - - - /* Finally, the sole MT-specific part. */ - switch (r_type) - { - 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; - } - - - if (r != bfd_reloc_ok) - { - const char * msg = (const char *) NULL; - - switch (r) - { - case bfd_reloc_overflow: - r = 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, name, input_bfd, input_section, rel->r_offset, TRUE); - break; - - case bfd_reloc_outofrange: - msg = _("internal error: out of range error"); - break; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous relocation"); - break; - - default: - msg = _("internal error: unknown error"); - break; - } - - if (msg) - r = info->callbacks->warning - (info, msg, name, input_bfd, input_section, rel->r_offset); - - if (! r) - return FALSE; - } - } - - return TRUE; -} - -/* Return the section that should be marked against GC for a given - relocation. */ - -static asection * -mt_elf_gc_mark_hook - (asection * sec, - struct bfd_link_info * info ATTRIBUTE_UNUSED, - Elf_Internal_Rela * rel ATTRIBUTE_UNUSED, - struct elf_link_hash_entry * h, - Elf_Internal_Sym * sym) -{ - if (h != NULL) - { - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; - - case bfd_link_hash_common: - return h->root.u.c.p->section; - - default: - break; - } - } - else - { - if (!(elf_bad_symtab (sec->owner) - && ELF_ST_BIND (sym->st_info) != STB_LOCAL) - && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) - && sym->st_shndx != SHN_COMMON)) - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - } - - return NULL; -} - -/* Update the got entry reference counts for the section being - removed. */ - -static bfd_boolean -mt_elf_gc_sweep_hook - (bfd * abfd ATTRIBUTE_UNUSED, - struct bfd_link_info * info ATTRIBUTE_UNUSED, - asection * sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED) -{ - return TRUE; -} - -/* 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, - struct bfd_link_info * info, - asection * sec, - const Elf_Internal_Rela * relocs) -{ - 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) - 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; - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - } - - return TRUE; -} - -/* Return the MACH for an e_flags value. */ - -static int -elf32_mt_machine (bfd *abfd) -{ - switch (elf_elfheader (abfd)->e_flags & EF_MT_CPU_MASK) - { - case EF_MT_CPU_MRISC: return bfd_mach_ms1; - case EF_MT_CPU_MRISC2: return bfd_mach_mrisc2; - case EF_MT_CPU_MS2: return bfd_mach_ms2; - } - - return bfd_mach_ms1; -} - -static bfd_boolean -mt_elf_object_p (bfd * abfd) -{ - bfd_default_set_arch_mach (abfd, bfd_arch_mt, elf32_mt_machine (abfd)); - - return TRUE; -} - -/* Function to set the ELF flag bits. */ - -static bfd_boolean -mt_elf_set_private_flags (bfd * abfd, - flagword flags) -{ - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = TRUE; - 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) -{ - 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) - return FALSE; - - /* If they're not both mt, then merging is meaningless, so just - don't do it. */ - if (strcmp (ibfd->arch_info->arch_name, "mt") != 0) - return TRUE; - if (strcmp (obfd->arch_info->arch_name, "mt") != 0) - return TRUE; - - new_flags = elf_elfheader (ibfd)->e_flags; - old_flags = elf_elfheader (obfd)->e_flags; - -#ifdef DEBUG - _bfd_error_handler ("%B: old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s", - ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no"); -#endif - - if (!elf_flags_init (obfd)) - { - old_flags = new_flags; - elf_flags_init (obfd) = TRUE; - } - else if ((new_flags & EF_MT_CPU_MASK) != (old_flags & EF_MT_CPU_MASK)) - { - /* CPU has changed. This is invalid, because MRISC, MRISC2 and - MS2 are not subsets of each other. */ - ok = FALSE; - } - - if (ok) - { - obfd->arch_info = ibfd->arch_info; - elf_elfheader (obfd)->e_flags = old_flags; - } - - return ok; -} - -static bfd_boolean -mt_elf_print_private_bfd_data (bfd * abfd, void * ptr) -{ - FILE * file = (FILE *) 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); - - switch (flags & EF_MT_CPU_MASK) - { - default: - case EF_MT_CPU_MRISC: fprintf (file, " ms1-16-002"); break; - case EF_MT_CPU_MRISC2: fprintf (file, " ms1-16-003"); break; - case EF_MT_CPU_MS2: fprintf (file, " ms2"); break; - } - - fputc ('\n', file); - - return TRUE; -} - - -#define TARGET_BIG_SYM bfd_elf32_mt_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_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 elf_backend_gc_mark_hook mt_elf_gc_mark_hook -#define elf_backend_gc_sweep_hook mt_elf_gc_sweep_hook -#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 - -#include "elf32-target.h" |