diff options
author | Nick Clifton <nickc@redhat.com> | 1997-09-17 23:50:21 +0000 |
---|---|---|
committer | Nick Clifton <nickc@redhat.com> | 1997-09-17 23:50:21 +0000 |
commit | 9420c20ac47c4e73986ee590530f667b7a7f7e3b (patch) | |
tree | 41dc64b832b42dd1aa9470bf61103378800decf4 | |
parent | 2001e533ffd6a46548cf3bf192e57649aebe8c1b (diff) | |
download | gdb-9420c20ac47c4e73986ee590530f667b7a7f7e3b.zip gdb-9420c20ac47c4e73986ee590530f667b7a7f7e3b.tar.gz gdb-9420c20ac47c4e73986ee590530f667b7a7f7e3b.tar.bz2 |
Added support for the call table relocations.
-rw-r--r-- | bfd/ChangeLog | 9 | ||||
-rw-r--r-- | bfd/bfd-in2.h | 6 | ||||
-rw-r--r-- | bfd/elf32-v850.c | 146 |
3 files changed, 144 insertions, 17 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index dd64b74..f9934ae 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,4 +1,13 @@ Wed Sep 17 09:54:51 1997 Nick Clifton <nickc@cygnus.com> +start-sanitize-v850e + + * elf32-v850.c (v850_elf_final_link_relocate, v850_elf_reloc, + v850_elf_check_relocs, v850_elf_reloc_map, v850_elf_howto_table): + Add support for the CALLT relocs. + + * reloc.c (COMMENT): Add BFD_RELOC_V850_CALLT_6_7_OFFSET and + BFD_RELOC_V850_CALLT_16_16_OFFSET. +end-sanitize-v850e * elf32-v850.c (v850_elf_final_link_relocate): Add checks to catch relocations against non-existant symbols. diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index b117532..cf4caec 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -2008,6 +2008,12 @@ bits placed non-contigously in the instruction. */ /* This is a 16 bit offset from the zero data area pointer, with the bits placed non-contigously in the instruction. */ BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, + +/* This is a 6 bit offset from the call table base pointer. */ + BFD_RELOC_V850_CALLT_6_7_OFFSET, + +/* This is a 16 bit offset from the call table base pointer. */ + BFD_RELOC_V850_CALLT_16_16_OFFSET, /* end-sanitize-v850e */ diff --git a/bfd/elf32-v850.c b/bfd/elf32-v850.c index d3339fb..532c237 100644 --- a/bfd/elf32-v850.c +++ b/bfd/elf32-v850.c @@ -370,6 +370,36 @@ static reloc_howto_type v850_elf_howto_table[] = 0xfffe0020, /* dst_mask */ false), /* pcrel_offset */ + /* 6 bit offset from the call table base pointer. */ + HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 7, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + v850_elf_reloc, /* special_function */ + "R_V850_CALLT_6_7_OFFSET", /* name */ + false, /* partial_inplace */ + 0x3f, /* src_mask */ + 0x3f, /* dst_mask */ + false), /* pcrel_offset */ + + /* 16 bit offset from the call table base pointer. */ + HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + v850_elf_reloc, /* special_function */ + "R_V850_CALLT_16_16_OFFSET", /* name */ + false, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + /* end-sanitize-v850e */ }; @@ -396,15 +426,17 @@ static const struct v850_elf_reloc_map v850_elf_reloc_map[] = { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, - { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, - { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, - { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, + { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, + { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, + { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, /* start-sanitize-v850e */ - { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, - { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, + { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, + { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, + { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, + { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, /* end-sanitize-v850e */ }; @@ -412,8 +444,8 @@ static const struct v850_elf_reloc_map v850_elf_reloc_map[] = /* Map a bfd relocation into the appropriate howto structure */ static reloc_howto_type * v850_elf_reloc_type_lookup (abfd, code) - bfd *abfd; - bfd_reloc_code_real_type code; + bfd * abfd; + bfd_reloc_code_real_type code; { unsigned int i; @@ -436,9 +468,9 @@ v850_elf_reloc_type_lookup (abfd, code) /* Set the howto pointer for an V850 ELF reloc. */ static void v850_elf_info_to_howto_rel (abfd, cache_ptr, dst) - bfd *abfd; - arelent *cache_ptr; - Elf32_Internal_Rel *dst; + bfd * abfd; + arelent * cache_ptr; + Elf32_Internal_Rel * dst; { unsigned int r_type; @@ -454,10 +486,10 @@ v850_elf_info_to_howto_rel (abfd, cache_ptr, dst) static boolean v850_elf_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; + bfd * abfd; + struct bfd_link_info * info; + asection * sec; + const Elf_Internal_Rela * relocs; { boolean ret = true; bfd *dynobj; @@ -509,6 +541,10 @@ v850_elf_check_relocs (abfd, info, sec, relocs) case R_V850_32: case R_V850_16: case R_V850_8: +/* start-sanitize-v850e */ + case R_V850_CALLT_6_7_OFFSET: + case R_V850_CALLT_16_16_OFFSET: +/* end-sanitize-v850e */ break; /* start-sanitize-v850e */ @@ -832,6 +868,25 @@ v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err) bfd_put_32 (abfd, insn, (bfd_byte *)data + reloc->address); return bfd_reloc_ok; + + case R_V850_CALLT_6_7_OFFSET: + if ((long) relocation > 0x7e || (long) relocation < 0) + return bfd_reloc_overflow; + + if (relocation & 1) + return bfd_reloc_dangerous; + + insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc->address); + insn &= 0xff80; + insn |= (relocation >> 1); + + bfd_put_16 (abfd, insn, (bfd_byte *)data + reloc->address); + return bfd_reloc_ok; + + case R_V850_CALLT_16_16_OFFSET: + bfd_put_16 (abfd, relocation, (bfd_byte *)data + reloc->address); + return bfd_reloc_ok; + /* end-sanitize-v850e */ } @@ -842,8 +897,8 @@ v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err) /*ARGSUSED*/ static boolean v850_elf_is_local_label_name (abfd, name) - bfd *abfd; - const char *name; + bfd * abfd; + const char * name; { return ((name[0] == '.' && (name[1] == 'L' || name[1] == '.')) || (name[0] == '_' && name[1] == '.' && name[2] == 'L' @@ -1286,8 +1341,65 @@ v850_elf_final_link_relocate (howto, input_bfd, output_bfd, bfd_put_32 (input_bfd, insn, hit_data); return bfd_reloc_ok; -/* end-sanitize-v850e */ + case R_V850_CALLT_6_7_OFFSET: + { + unsigned long ctbp; + struct bfd_link_hash_entry * h; + + /* Get the value of __ctbp. */ + h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); + if (h == (struct bfd_link_hash_entry *) NULL + || h->type != bfd_link_hash_defined) + return bfd_reloc_continue; /* Actually this indicates that __ctbp could not be found. */ + + ctbp = (h->u.def.value + + h->u.def.section->output_section->vma + + h->u.def.section->output_offset); + value -= ctbp; + + insn = bfd_get_16 (input_bfd, hit_data); + + value += ((insn & 0x3f) << 1); + + if ((long) value > 0x7e || (long) value < 0) + return bfd_reloc_overflow; + + insn &= 0xff80; + insn |= (value >> 1); + bfd_put_16 (input_bfd, insn, hit_data); + return bfd_reloc_ok; + } + case R_V850_CALLT_16_16_OFFSET: + if (sym_sec == NULL) + return bfd_reloc_undefined; + + { + unsigned long ctbp; + struct bfd_link_hash_entry * h; + + /* Get the value of __ctbp. */ + h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true); + if (h == (struct bfd_link_hash_entry *) NULL + || h->type != bfd_link_hash_defined) + return bfd_reloc_other; + + ctbp = (h->u.def.value + + h->u.def.section->output_section->vma + + h->u.def.section->output_offset); + + value -= sym_sec->output_section->vma; + value -= (ctbp - sym_sec->output_section->vma); + value += (short) bfd_get_16 (input_bfd, hit_data); + + if ((long) value > 0xffff || (long) value < 0) + return bfd_reloc_overflow; + + bfd_put_16 (input_bfd, value, hit_data); + return bfd_reloc_ok; + } + +/* end-sanitize-v850e */ case R_V850_NONE: return bfd_reloc_ok; |