diff options
Diffstat (limited to 'contrib/gdb/bfd/elf64-sparc.c')
| -rw-r--r-- | contrib/gdb/bfd/elf64-sparc.c | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/contrib/gdb/bfd/elf64-sparc.c b/contrib/gdb/bfd/elf64-sparc.c new file mode 100644 index 0000000..5059b80 --- /dev/null +++ b/contrib/gdb/bfd/elf64-sparc.c @@ -0,0 +1,421 @@ +/* SPARC-specific support for 64-bit ELF + Copyright (C) 1993, 1995, 1996 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. */ + +/* We need a published ABI spec for this. Until one comes out, don't + assume this'll remain unchanged forever. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "elf-bfd.h" + +#define SPARC64_OLD_RELOCS +#include "elf/sparc.h" + +static reloc_howto_type *sparc64_elf_reloc_type_lookup + PARAMS ((bfd *, bfd_reloc_code_real_type)); +static void elf_info_to_howto + PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); + +static boolean sparc64_elf_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static boolean sparc64_elf_object_p PARAMS ((bfd *)); + +/* The howto table and associated functions. + ??? Some of the relocation values have changed. Until we're ready + to upgrade, we have our own copy. At some point a non upward compatible + change will be made at which point this table can be deleted and we'll + use the one in elf32-sparc.c. */ + +static bfd_reloc_status_type sparc_elf_wdisp16_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static reloc_howto_type sparc64_elf_howto_table[] = +{ + HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true), + HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true), + HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true), + HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), + HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), + HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), + HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), + HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), + HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), + HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), + HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true), + HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true), + HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true), + HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true), + HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true), + HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true), + HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true), + HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true), + HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true), + HOWTO(R_SPARC_GLOB_DAT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true), + HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true), + HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), + HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), +#if 0 /* not used yet */ + HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), + HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), + HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), +#endif + HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), + HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), + HOWTO(R_SPARC_64, 0,4,00,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,~ (bfd_vma) 0, true), + HOWTO(R_SPARC_OLO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_OLO10", false,0,0x000003ff,true), + HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), + HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), + HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), + HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), + HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), + HOWTO(R_SPARC_WDISP19, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), + HOWTO(R_SPARC_GLOB_JMP, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true), + HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), +#if 0 /* not used yet */ + HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), + HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), +#endif +}; + +struct elf_reloc_map { + unsigned char bfd_reloc_val; + unsigned char elf_reloc_val; +}; + +static CONST struct elf_reloc_map sparc_reloc_map[] = +{ + { BFD_RELOC_NONE, R_SPARC_NONE, }, + { BFD_RELOC_16, R_SPARC_16, }, + { BFD_RELOC_8, R_SPARC_8 }, + { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, + /* ??? This might cause us to need separate functions in elf{32,64}-sparc.c + (we could still have just one table), but is this reloc ever used? */ + { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */ + { BFD_RELOC_32, R_SPARC_32 }, + { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, + { BFD_RELOC_HI22, R_SPARC_HI22 }, + { BFD_RELOC_LO10, R_SPARC_LO10, }, + { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, + { BFD_RELOC_SPARC22, R_SPARC_22 }, + { BFD_RELOC_SPARC13, R_SPARC_13 }, + { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, + { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, + { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, + { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, + { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, + { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, + { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, + { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, + { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, + { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, + { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, + /* ??? Doesn't dwarf use this? */ +/*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */ + {BFD_RELOC_SPARC_10, R_SPARC_10}, + {BFD_RELOC_SPARC_11, R_SPARC_11}, + {BFD_RELOC_SPARC_64, R_SPARC_64}, + {BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10}, + {BFD_RELOC_SPARC_HH22, R_SPARC_HH22}, + {BFD_RELOC_SPARC_HM10, R_SPARC_HM10}, + {BFD_RELOC_SPARC_LM22, R_SPARC_LM22}, + {BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22}, + {BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10}, + {BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22}, + {BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16}, + {BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19}, + {BFD_RELOC_SPARC_GLOB_JMP, R_SPARC_GLOB_JMP}, + {BFD_RELOC_SPARC_7, R_SPARC_7}, +#if 0 /* unused */ + {BFD_RELOC_SPARC_5, R_SPARC_5}, + {BFD_RELOC_SPARC_6, R_SPARC_6}, +#endif +}; + +static reloc_howto_type * +sparc64_elf_reloc_type_lookup (abfd, code) + bfd *abfd; + bfd_reloc_code_real_type code; +{ + unsigned int i; + for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) + { + if (sparc_reloc_map[i].bfd_reloc_val == code) + return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; + } + return 0; +} + +static void +elf_info_to_howto (abfd, cache_ptr, dst) + bfd *abfd; + arelent *cache_ptr; + Elf64_Internal_Rela *dst; +{ + BFD_ASSERT (ELF64_R_TYPE (dst->r_info) < (unsigned int) R_SPARC_max); + cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE (dst->r_info)]; +} + +/* Handle the WDISP16 reloc. */ + +static bfd_reloc_status_type +sparc_elf_wdisp16_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma x; + + if (output_bfd != (bfd *) NULL + && (symbol->flags & BSF_SECTION_SYM) == 0 + && (! reloc_entry->howto->partial_inplace + || reloc_entry->addend == 0)) + { + reloc_entry->address += input_section->output_offset; + return bfd_reloc_ok; + } + + if (output_bfd != NULL) + return bfd_reloc_continue; + + if (reloc_entry->address > input_section->_cooked_size) + return bfd_reloc_outofrange; + + relocation = (symbol->value + + symbol->section->output_section->vma + + symbol->section->output_offset); + relocation += reloc_entry->addend; + relocation -= (input_section->output_section->vma + + input_section->output_offset); + relocation -= reloc_entry->address; + + x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); + x |= ((((relocation >> 2) & 0xc000) << 6) + | ((relocation >> 2) & 0x3fff)); + bfd_put_32 (abfd, x, (char *) data + reloc_entry->address); + + if ((bfd_signed_vma) relocation < - 0x40000 + || (bfd_signed_vma) relocation > 0x3ffff) + return bfd_reloc_overflow; + else + return bfd_reloc_ok; +} + +/* Relocate a SPARC64 ELF section. */ + +static boolean +sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, + contents, relocs, local_syms, local_sections) + bfd *output_bfd; + 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); + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; rel++) + { + int r_type; + reloc_howto_type *howto; + long r_symndx; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; + asection *sec; + bfd_vma relocation; + bfd_reloc_status_type r; + + r_type = ELF64_R_TYPE (rel->r_info); + if (r_type < 0 || r_type >= (int) R_SPARC_max) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + howto = sparc64_elf_howto_table + r_type; + + r_symndx = ELF64_R_SYM (rel->r_info); + + if (info->relocateable) + { + /* This is a relocateable link. We don't have to change + anything, unless the reloc is against a section symbol, + in which case we have to adjust according to where the + section symbol winds up in the output section. */ + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + sec = local_sections[r_symndx]; + rel->r_addend += sec->output_offset + sym->st_value; + } + } + + continue; + } + + /* This is a final link. */ + h = NULL; + sym = NULL; + sec = NULL; + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + sec = local_sections[r_symndx]; + relocation = (sec->output_section->vma + + sec->output_offset + + sym->st_value); + } + 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; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + sec = h->root.u.def.section; + relocation = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + else if (h->root.type == bfd_link_hash_undefweak) + relocation = 0; + else + { + if (! ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset))) + return false; + relocation = 0; + } + } + + if (r_type != R_SPARC_WDISP16) + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + else + { + bfd_vma x; + + relocation += rel->r_addend; + relocation -= (input_section->output_section->vma + + input_section->output_offset); + relocation -= rel->r_offset; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x |= ((((relocation >> 2) & 0xc000) << 6) + | ((relocation >> 2) & 0x3fff)); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + if ((bfd_signed_vma) relocation < - 0x40000 + || (bfd_signed_vma) relocation > 0x3ffff) + r = bfd_reloc_overflow; + else + r = bfd_reloc_ok; + } + + if (r != bfd_reloc_ok) + { + switch (r) + { + default: + case bfd_reloc_outofrange: + abort (); + case bfd_reloc_overflow: + { + const char *name; + + if (h != NULL) + name = h->root.root.string; + else + { + name = (bfd_elf_string_from_elf_section + (input_bfd, + symtab_hdr->sh_link, + sym->st_name)); + if (name == NULL) + return false; + if (*name == '\0') + name = bfd_section_name (input_bfd, sec); + } + if (! ((*info->callbacks->reloc_overflow) + (info, name, howto->name, (bfd_vma) 0, + input_bfd, input_section, rel->r_offset))) + return false; + } + break; + } + } + } + + return true; +} + +/* Set the right machine number for a SPARC64 ELF file. */ + +static boolean +sparc64_elf_object_p (abfd) + bfd *abfd; +{ + return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); +} + +#define TARGET_BIG_SYM bfd_elf64_sparc_vec +#define TARGET_BIG_NAME "elf64-sparc" +#define ELF_ARCH bfd_arch_sparc +#define ELF_MACHINE_CODE EM_SPARC64 +#define ELF_MAXPAGESIZE 0x100000 + +#define bfd_elf64_bfd_reloc_type_lookup sparc64_elf_reloc_type_lookup +#define elf_backend_relocate_section sparc64_elf_relocate_section +#define elf_backend_object_p sparc64_elf_object_p + +#include "elf64-target.h" |
