X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf-m10300.c;h=15380bc64ad0902bca199b40c519913e7a9111bd;hb=a4bd839069db2337a6d8e219782aff38875699a7;hp=3e3c223b40b54ea89ba902d374125ce7f04e80f1;hpb=a7c108501aa17c815e4085b2421bca552b292d02;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf-m10300.c b/bfd/elf-m10300.c index 3e3c223b40..15380bc64a 100644 --- a/bfd/elf-m10300.c +++ b/bfd/elf-m10300.c @@ -1,5 +1,6 @@ /* Matsushita 10300 specific support for 32-bit ELF - Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. + Copyright 1996, 1997, 1998, 1999, 2000, 2001 + Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. @@ -23,8 +24,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "elf-bfd.h" #include "elf/mn10300.h" -struct elf32_mn10300_link_hash_entry -{ +struct elf32_mn10300_link_hash_entry { /* The basic elf link hash table entry. */ struct elf_link_hash_entry root; @@ -62,8 +62,7 @@ struct elf32_mn10300_link_hash_entry /* We derive a hash table from the main elf linker hash table so we can store state variables and a secondary hash table without resorting to global variables. */ -struct elf32_mn10300_link_hash_table -{ +struct elf32_mn10300_link_hash_table { /* The main hash table. */ struct elf_link_hash_table root; @@ -119,8 +118,7 @@ static void compute_function_info does absolutely nothing. */ #define USE_RELA -static reloc_howto_type elf_mn10300_howto_table[] = -{ +static reloc_howto_type elf_mn10300_howto_table[] = { /* Dummy relocation. Does nothing. */ HOWTO (R_MN10300_NONE, 0, @@ -264,17 +262,14 @@ static reloc_howto_type elf_mn10300_howto_table[] = 0xffffff, 0xffffff, false), - }; -struct mn10300_reloc_map -{ +struct mn10300_reloc_map { bfd_reloc_code_real_type bfd_reloc_val; unsigned char elf_reloc_val; }; -static const struct mn10300_reloc_map mn10300_reloc_map[] = -{ +static const struct mn10300_reloc_map mn10300_reloc_map[] = { { BFD_RELOC_NONE, R_MN10300_NONE, }, { BFD_RELOC_32, R_MN10300_32, }, { BFD_RELOC_16, R_MN10300_16, }, @@ -459,7 +454,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, case R_MN10300_24: value += addend; - if ((long)value > 0x7fffff || (long)value < -0x800000) + if ((long) value > 0x7fffff || (long) value < -0x800000) return bfd_reloc_overflow; bfd_put_8 (input_bfd, value & 0xff, hit_data); @@ -470,7 +465,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, case R_MN10300_16: value += addend; - if ((long)value > 0x7fff || (long)value < -0x8000) + if ((long) value > 0x7fff || (long) value < -0x8000) return bfd_reloc_overflow; bfd_put_16 (input_bfd, value, hit_data); @@ -479,7 +474,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, case R_MN10300_8: value += addend; - if ((long)value > 0x7f || (long)value < -0x80) + if ((long) value > 0x7f || (long) value < -0x80) return bfd_reloc_overflow; bfd_put_8 (input_bfd, value, hit_data); @@ -491,7 +486,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, value -= offset; value += addend; - if ((long)value > 0xff || (long)value < -0x100) + if ((long) value > 0xff || (long) value < -0x100) return bfd_reloc_overflow; bfd_put_8 (input_bfd, value, hit_data); @@ -503,7 +498,7 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, value -= offset; value += addend; - if ((long)value > 0xffff || (long)value < -0x10000) + if ((long) value > 0xffff || (long) value < -0x10000) return bfd_reloc_overflow; bfd_put_16 (input_bfd, value, hit_data); @@ -526,7 +521,6 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, return bfd_reloc_notsupported; } } - /* Relocate an MN10300 ELF section. */ static boolean @@ -637,7 +631,7 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, if (r != bfd_reloc_ok) { const char *name; - const char *msg = (const char *)0; + const char *msg = (const char *) 0; if (h != NULL) name = h->root.root.root.string; @@ -703,7 +697,7 @@ elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) struct elf32_mn10300_link_hash_entry *entry; unsigned int byte_count = 0; - entry = (struct elf32_mn10300_link_hash_entry *)gen_entry; + entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; /* If we already know we want to convert "call" to "calls" for calls to this symbol, then return now. */ @@ -823,22 +817,22 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* We're going to need all the symbols for each bfd. */ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - /* Get cached copy if it exists. */ - if (symtab_hdr->contents != NULL) - extsyms = (Elf32_External_Sym *) symtab_hdr->contents; - else - { - /* Go get them off disk. */ - extsyms = ((Elf32_External_Sym *) - bfd_malloc (symtab_hdr->sh_size)); - if (extsyms == NULL) - goto error_return; - free_extsyms = extsyms; - if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || (bfd_read (extsyms, 1, symtab_hdr->sh_size, input_bfd) - != symtab_hdr->sh_size)) - goto error_return; - } + /* Get cached copy if it exists. */ + if (symtab_hdr->contents != NULL) + extsyms = (Elf32_External_Sym *) symtab_hdr->contents; + else + { + /* Go get them off disk. */ + extsyms = ((Elf32_External_Sym *) + bfd_malloc (symtab_hdr->sh_size)); + if (extsyms == NULL) + goto error_return; + free_extsyms = extsyms; + if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 + || (bfd_read (extsyms, 1, symtab_hdr->sh_size, input_bfd) + != symtab_hdr->sh_size)) + goto error_return; + } /* Iterate over each section in this bfd. */ for (section = input_bfd->sections; @@ -857,7 +851,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) else if (section->_raw_size != 0) { /* Go get them off disk. */ - contents = (bfd_byte *)bfd_malloc (section->_raw_size); + contents = (bfd_byte *) bfd_malloc (section->_raw_size); if (contents == NULL) goto error_return; free_contents = contents; @@ -900,7 +894,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) r_type = ELF32_R_TYPE (irel->r_info); r_index = ELF32_R_SYM (irel->r_info); - if (r_type < 0 || r_type >= (int)R_MN10300_MAX) + if (r_type < 0 || r_type >= (int) R_MN10300_MAX) goto error_return; /* We need the name and hash table entry of the target @@ -945,7 +939,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (new_name == 0) goto error_return; - sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); + sprintf (new_name, "%s_%08x", + sym_name, (int) sym_sec); sym_name = new_name; hash = (struct elf32_mn10300_link_hash_entry *) @@ -1025,7 +1020,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (new_name == 0) goto error_return; - sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); + sprintf (new_name, "%s_%08x", + sym_name, (int) sym_sec); sym_name = new_name; hash = (struct elf32_mn10300_link_hash_entry *) @@ -1034,7 +1030,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) true, false); free (new_name); compute_function_info (input_bfd, hash, - isym.st_value, contents); + isym.st_value, contents); } } @@ -1119,22 +1115,22 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* We're going to need all the symbols for each bfd. */ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - /* Get cached copy if it exists. */ - if (symtab_hdr->contents != NULL) - extsyms = (Elf32_External_Sym *) symtab_hdr->contents; - else - { - /* Go get them off disk. */ - extsyms = ((Elf32_External_Sym *) - bfd_malloc (symtab_hdr->sh_size)); - if (extsyms == NULL) - goto error_return; - free_extsyms = extsyms; - if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || (bfd_read (extsyms, 1, symtab_hdr->sh_size, input_bfd) - != symtab_hdr->sh_size)) - goto error_return; - } + /* Get cached copy if it exists. */ + if (symtab_hdr->contents != NULL) + extsyms = (Elf32_External_Sym *) symtab_hdr->contents; + else + { + /* Go get them off disk. */ + extsyms = ((Elf32_External_Sym *) + bfd_malloc (symtab_hdr->sh_size)); + if (extsyms == NULL) + goto error_return; + free_extsyms = extsyms; + if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 + || (bfd_read (extsyms, 1, symtab_hdr->sh_size, input_bfd) + != symtab_hdr->sh_size)) + goto error_return; + } /* Walk over each section in this bfd. */ for (section = input_bfd->sections; @@ -1151,15 +1147,15 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (section->reloc_count != 0) { - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf32_link_read_relocs - (input_bfd, section, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - if (! link_info->keep_memory) - free_relocs = internal_relocs; + /* Get a copy of the native relocations. */ + internal_relocs = (_bfd_elf32_link_read_relocs + (input_bfd, section, (PTR) NULL, + (Elf_Internal_Rela *) NULL, + link_info->keep_memory)); + if (internal_relocs == NULL) + goto error_return; + if (! link_info->keep_memory) + free_relocs = internal_relocs; } /* Get cached copy of section contents if it exists. */ @@ -1168,7 +1164,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) else { /* Go get them off disk. */ - contents = (bfd_byte *)bfd_malloc (section->_raw_size); + contents = (bfd_byte *) bfd_malloc (section->_raw_size); if (contents == NULL) goto error_return; free_contents = contents; @@ -1219,7 +1215,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) new_name = bfd_malloc (strlen (sym_name) + 10); if (new_name == 0) goto error_return; - sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); + sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); sym_name = new_name; sym_hash = (struct elf32_mn10300_link_hash_entry *) @@ -1243,7 +1239,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) elf_section_data (section)->this_hdr.contents = contents; free_contents = NULL; - symtab_hdr->contents = (bfd_byte *)extsyms; + symtab_hdr->contents = (bfd_byte *) extsyms; free_extsyms = NULL; /* Count how many bytes we're going to delete. */ @@ -1300,7 +1296,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) elf_section_data (section)->this_hdr.contents = contents; free_contents = NULL; - symtab_hdr->contents = (bfd_byte *)extsyms; + symtab_hdr->contents = (bfd_byte *) extsyms; free_extsyms = NULL; /* Count how many bytes we're going to delete. */ @@ -1490,7 +1486,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) new_name = bfd_malloc (strlen (sym_name) + 10); if (new_name == 0) goto error_return; - sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); + sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); sym_name = new_name; h = (struct elf32_mn10300_link_hash_entry *) @@ -1604,7 +1600,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* See if the value will fit in 16 bits, note the high value is 0x7fff + 2 as the target will be two bytes closer if we are able to relax. */ - if ((long)value < 0x8001 && (long)value > -0x8000) + if ((long) value < 0x8001 && (long) value > -0x8000) { unsigned char code; @@ -1719,7 +1715,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* See if the value will fit in 8 bits, note the high value is 0x7f + 1 as the target will be one bytes closer if we are able to relax. */ - if ((long)value < 0x80 && (long)value > -0x80) + if ((long) value < 0x80 && (long) value > -0x80) { unsigned char code; @@ -1838,48 +1834,48 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Reverse the condition of the first branch. */ switch (code) { - case 0xc8: - code = 0xc9; - break; - case 0xc9: - code = 0xc8; - break; - case 0xc0: - code = 0xc2; - break; - case 0xc2: - code = 0xc0; - break; - case 0xc3: - code = 0xc1; - break; - case 0xc1: - code = 0xc3; - break; - case 0xc4: - code = 0xc6; - break; - case 0xc6: - code = 0xc4; - break; - case 0xc7: - code = 0xc5; - break; - case 0xc5: - code = 0xc7; - break; - case 0xe8: - code = 0xe9; - break; - case 0x9d: - code = 0xe8; - break; - case 0xea: - code = 0xeb; - break; - case 0xeb: - code = 0xea; - break; + case 0xc8: + code = 0xc9; + break; + case 0xc9: + code = 0xc8; + break; + case 0xc0: + code = 0xc2; + break; + case 0xc2: + code = 0xc0; + break; + case 0xc3: + code = 0xc1; + break; + case 0xc1: + code = 0xc3; + break; + case 0xc4: + code = 0xc6; + break; + case 0xc6: + code = 0xc4; + break; + case 0xc7: + code = 0xc5; + break; + case 0xc5: + code = 0xc7; + break; + case 0xe8: + code = 0xe9; + break; + case 0x9d: + code = 0xe8; + break; + case 0xea: + code = 0xeb; + break; + case 0xeb: + code = 0xea; + break; } bfd_put_8 (abfd, code, contents + irel->r_offset - 1); @@ -1909,7 +1905,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) value += irel->r_addend; /* See if the value will fit in 8 bits. */ - if ((long)value < 0x7f && (long)value > -0x80) + if ((long) value < 0x7f && (long) value > -0x80) { unsigned char code; @@ -1921,8 +1917,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (code == 0xfd) { - /* Get the second opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); + /* Get the second opcode. */ + code = bfd_get_8 (abfd, contents + irel->r_offset - 2); /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit equivalent instructions exists. */ @@ -1954,9 +1950,9 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) bfd_put_8 (abfd, code, contents + irel->r_offset - 2); /* Fix the relocation's type. */ - irel->r_info - = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MN10300_8); + irel->r_info = + ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + R_MN10300_8); /* Delete two bytes of data. */ if (!mn10300_elf_relax_delete_bytes (abfd, sec, @@ -1965,12 +1961,11 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it - may be slow. */ + may be slow. */ *again = true; break; } } - } } } @@ -1985,7 +1980,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* See if the value will fit in 24 bits. We allow any 16bit match here. We prune those we can't handle below. */ - if ((long)value < 0x7fffff && (long)value > -0x800000) + if ((long) value < 0x7fffff && (long) value > -0x800000) { unsigned char code; @@ -2003,7 +1998,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* All the am33 32 -> 24 relaxing possibilities. */ /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit equivalent instructions exists. */ - if (code != 0x6b && code != 0x7b + if (code != 0x6b && code != 0x7b && code != 0x8b && code != 0x9b && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b @@ -2031,9 +2026,9 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) bfd_put_8 (abfd, code, contents + irel->r_offset - 2); /* Fix the relocation's type. */ - irel->r_info - = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MN10300_24); + irel->r_info = + ELF32_R_INFO (ELF32_R_SYM (irel->r_info), + R_MN10300_24); /* Delete one byte of data. */ if (!mn10300_elf_relax_delete_bytes (abfd, sec, @@ -2042,19 +2037,18 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* That will change things, so, we should relax again. Note that this is not required, and it - may be slow. */ + may be slow. */ *again = true; break; } } - } } /* See if the value will fit in 16 bits. We allow any 16bit match here. We prune those we can't handle below. */ - if ((long)value < 0x7fff && (long)value > -0x8000) + if ((long) value < 0x7fff && (long) value > -0x8000) { unsigned char code; @@ -2189,6 +2183,11 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) case 0x91: case 0x92: case 0x93: + /* sp-based offsets are zero-extended. */ + if (code >= 0x90 && code <= 0x93 + && (long)value < 0) + continue; + /* Note that we've changed the relocation contents, etc. */ elf_section_data (sec)->relocs = internal_relocs; free_relocs = NULL; @@ -2237,6 +2236,11 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) && (value & 0x8000)) continue; + /* mov imm16, an zero-extends the immediate. */ + if (code == 0xdc + && (long)value < 0) + continue; + /* Note that we've changed the relocation contents, etc. */ elf_section_data (sec)->relocs = internal_relocs; free_relocs = NULL; @@ -2282,18 +2286,18 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) break; /* mov (abs32),an -> mov (abs16),an - mov (d32,sp),an -> mov (d32,sp),an - mov (d32,sp),dn -> mov (d32,sp),dn - movbu (d32,sp),dn -> movbu (d32,sp),dn - movhu (d32,sp),dn -> movhu (d32,sp),dn + mov (d32,sp),an -> mov (d16,sp),an + mov (d32,sp),dn -> mov (d16,sp),dn + movbu (d32,sp),dn -> movbu (d16,sp),dn + movhu (d32,sp),dn -> movhu (d16,sp),dn add imm32,dn -> add imm16,dn cmp imm32,dn -> cmp imm16,dn add imm32,an -> add imm16,an cmp imm32,an -> cmp imm16,an - and imm32,dn -> and imm32,dn - or imm32,dn -> or imm32,dn - xor imm32,dn -> xor imm32,dn - btst imm32,dn -> btst imm32,dn */ + and imm32,dn -> and imm16,dn + or imm32,dn -> or imm16,dn + xor imm32,dn -> xor imm16,dn + btst imm32,dn -> btst imm16,dn */ case 0xa0: case 0xb0: @@ -2309,6 +2313,16 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) case 0xe1: case 0xe2: case 0xe3: + /* cmp imm16, an zero-extends the immediate. */ + if (code == 0xdc + && (long)value < 0) + continue; + + /* So do sp-based offsets. */ + if (code >= 0xb0 && code <= 0xb3 + && (long)value < 0) + continue; + /* Note that we've changed the relocation contents, etc. */ elf_section_data (sec)->relocs = internal_relocs; free_relocs = NULL; @@ -2357,7 +2371,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Fix the relocation's type. */ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MN10300_16); + R_MN10300_16); /* Delete two bytes of data. */ if (!mn10300_elf_relax_delete_bytes (abfd, sec, @@ -2873,12 +2887,12 @@ elf_mn10300_mach (flags) { switch (flags & EF_MN10300_MACH) { - case E_MN10300_MACH_MN10300: - default: - return bfd_mach_mn10300; + case E_MN10300_MACH_MN10300: + default: + return bfd_mach_mn10300; - case E_MN10300_MACH_AM33: - return bfd_mach_am33; + case E_MN10300_MACH_AM33: + return bfd_mach_am33; } } @@ -2886,7 +2900,6 @@ elf_mn10300_mach (flags) file. This gets the MN10300 architecture right based on the machine number. */ -/*ARGSUSED*/ void _bfd_mn10300_elf_final_write_processing (abfd, linker) bfd *abfd; @@ -2896,14 +2909,14 @@ _bfd_mn10300_elf_final_write_processing (abfd, linker) switch (bfd_get_mach (abfd)) { - default: - case bfd_mach_mn10300: - val = E_MN10300_MACH_MN10300; - break; - - case bfd_mach_am33: - val = E_MN10300_MACH_AM33; - break; + default: + case bfd_mach_mn10300: + val = E_MN10300_MACH_MN10300; + break; + + case bfd_mach_am33: + val = E_MN10300_MACH_AM33; + break; } elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); @@ -2915,7 +2928,7 @@ _bfd_mn10300_elf_object_p (abfd) bfd *abfd; { bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, - elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); + elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); return true; }