X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf-m10300.c;h=01211ba9d3215db2a58de5e14870d94583a27dec;hb=dc810e3900d47ab2eea86d50231ff2e70b596847;hp=9ba09a88d61d8689b1920c25a93b1181613cc535;hpb=252b5132c753830d5fd56823373aed85f2a0db63;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf-m10300.c b/bfd/elf-m10300.c index 9ba09a88d6..01211ba9d3 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 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 +24,25 @@ 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 -{ +static bfd_reloc_status_type mn10300_elf_final_link_relocate + PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, + bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *, + asection *, int)); +static boolean mn10300_elf_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, + Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static boolean mn10300_elf_relax_section + PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *)); +static bfd_byte * mn10300_elf_get_relocated_section_contents + PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, + bfd_byte *, boolean, asymbol **)); +static unsigned long elf_mn10300_mach PARAMS ((flagword)); + +void _bfd_mn10300_elf_final_write_processing PARAMS ((bfd *, boolean)); +boolean _bfd_mn10300_elf_object_p PARAMS ((bfd *)); +boolean _bfd_mn10300_elf_merge_private_bfd_data PARAMS ((bfd *,bfd *)); + +struct elf32_mn10300_link_hash_entry { /* The basic elf link hash table entry. */ struct elf_link_hash_entry root; @@ -62,8 +80,7 @@ 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; @@ -119,9 +136,7 @@ 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, @@ -265,17 +280,14 @@ 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, }, @@ -290,7 +302,7 @@ static const struct mn10300_reloc_map mn10300_reloc_map[] = static reloc_howto_type * bfd_elf32_bfd_reloc_type_lookup (abfd, code) - bfd *abfd; + bfd *abfd ATTRIBUTE_UNUSED; bfd_reloc_code_real_type code; { unsigned int i; @@ -310,7 +322,7 @@ bfd_elf32_bfd_reloc_type_lookup (abfd, code) static void mn10300_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd; + bfd *abfd ATTRIBUTE_UNUSED; arelent *cache_ptr; Elf32_Internal_Rela *dst; { @@ -342,7 +354,7 @@ mn10300_elf_check_relocs (abfd, info, sec, relocs) 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); + 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; @@ -385,7 +397,7 @@ mn10300_elf_check_relocs (abfd, info, sec, relocs) static asection * mn10300_elf_gc_mark_hook (abfd, info, rel, h, sym) bfd *abfd; - struct bfd_link_info *info; + struct bfd_link_info *info ATTRIBUTE_UNUSED; Elf_Internal_Rela *rel; struct elf_link_hash_entry *h; Elf_Internal_Sym *sym; @@ -407,6 +419,9 @@ mn10300_elf_gc_mark_hook (abfd, info, rel, h, sym) case bfd_link_hash_common: return h->root.u.c.p->section; + + default: + break; } } } @@ -431,15 +446,15 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, addend, info, sym_sec, is_local) reloc_howto_type *howto; bfd *input_bfd; - bfd *output_bfd; + bfd *output_bfd ATTRIBUTE_UNUSED; asection *input_section; bfd_byte *contents; bfd_vma offset; bfd_vma value; bfd_vma addend; - struct bfd_link_info *info; - asection *sym_sec; - int is_local; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + asection *sym_sec ATTRIBUTE_UNUSED; + int is_local ATTRIBUTE_UNUSED; { unsigned long r_type = howto->type; bfd_byte *hit_data = contents + offset; @@ -457,7 +472,7 @@ 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); @@ -468,7 +483,7 @@ 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); @@ -477,7 +492,7 @@ 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); @@ -489,7 +504,7 @@ 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); @@ -501,7 +516,7 @@ 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); @@ -524,7 +539,6 @@ mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, return bfd_reloc_notsupported; } } - /* Relocate an MN10300 ELF section. */ static boolean @@ -603,8 +617,8 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, 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) + while (h->root.root.type == bfd_link_hash_indirect + || h->root.root.type == bfd_link_hash_warning) h = (struct elf32_mn10300_link_hash_entry *) h->root.root.u.i.link; if (h->root.root.type == bfd_link_hash_defined || h->root.root.type == bfd_link_hash_defweak) @@ -620,7 +634,7 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, { if (! ((*info->callbacks->undefined_symbol) (info, h->root.root.root.string, input_bfd, - input_section, rel->r_offset))) + input_section, rel->r_offset, true))) return false; relocation = 0; } @@ -635,7 +649,7 @@ 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; @@ -659,7 +673,7 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, case bfd_reloc_undefined: if (! ((*info->callbacks->undefined_symbol) (info, name, input_bfd, input_section, - rel->r_offset))) + rel->r_offset, true))) return false; break; @@ -696,12 +710,12 @@ mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, static boolean elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) struct bfd_hash_entry *gen_entry; - PTR in_args; + PTR in_args ATTRIBUTE_UNUSED; { 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. */ @@ -764,7 +778,6 @@ elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) This is only done if the resulting code is no larger than the original code. - * jmp:32 -> jmp:16 2 bytes * jmp:16 -> bra:8 1 byte @@ -822,22 +835,21 @@ 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 + { + bfd_size_type amt = symtab_hdr->sh_size; + /* Go get them off disk. */ + extsyms = (Elf32_External_Sym *) bfd_malloc (amt); + if (extsyms == NULL) + goto error_return; + free_extsyms = extsyms; + if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 + || bfd_bread (extsyms, amt, input_bfd) != amt) + goto error_return; + } /* Iterate over each section in this bfd. */ for (section = input_bfd->sections; @@ -846,10 +858,9 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) { struct elf32_mn10300_link_hash_entry *hash; Elf_Internal_Sym *sym; - asection *sym_sec; + asection *sym_sec = NULL; const char *sym_name; char *new_name; - Elf_Internal_Shdr *hdr; /* Get cached copy of section contents if it exists. */ if (elf_section_data (section)->this_hdr.contents != NULL) @@ -857,7 +868,7 @@ 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 +911,7 @@ 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 @@ -913,6 +924,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) { /* A local symbol. */ Elf_Internal_Sym isym; + struct elf_link_hash_table *elftab; + bfd_size_type amt; bfd_elf32_swap_symbol_in (input_bfd, extsyms + r_index, &isym); @@ -941,17 +954,19 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Tack on an ID so we can uniquely identify this local symbol in the global hash table. */ - new_name = bfd_malloc (strlen (sym_name) + 10); + amt = strlen (sym_name) + 10; + new_name = bfd_malloc (amt); 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 *) - elf_link_hash_lookup (&hash_table->static_hash_table->root, - sym_name, true, - true, false); + elftab = &hash_table->static_hash_table->root; + hash = ((struct elf32_mn10300_link_hash_entry *) + elf_link_hash_lookup (elftab, sym_name, + true, true, false)); free (new_name); } else @@ -991,7 +1006,6 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) shndx = _bfd_elf_section_from_bfd_section (input_bfd, section); - /* Look at each function defined in this section and update info for that function. */ esym = extsyms; @@ -1004,6 +1018,9 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (isym.st_shndx == shndx && ELF_ST_TYPE (isym.st_info) == STT_FUNC) { + struct elf_link_hash_table *elftab; + bfd_size_type amt; + if (isym.st_shndx == SHN_UNDEF) sym_sec = bfd_und_section_ptr; else if (isym.st_shndx > 0 @@ -1016,26 +1033,28 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) else if (isym.st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; - sym_name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - isym.st_name); + sym_name = (bfd_elf_string_from_elf_section + (input_bfd, symtab_hdr->sh_link, + isym.st_name)); /* Tack on an ID so we can uniquely identify this local symbol in the global hash table. */ - new_name = bfd_malloc (strlen (sym_name) + 10); + amt = strlen (sym_name) + 10; + new_name = bfd_malloc (amt); 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 *) - elf_link_hash_lookup (&hash_table->static_hash_table->root, - sym_name, true, - true, false); + elftab = &hash_table->static_hash_table->root; + hash = ((struct elf32_mn10300_link_hash_entry *) + elf_link_hash_lookup (elftab, sym_name, + true, true, false)); free (new_name); compute_function_info (input_bfd, hash, - isym.st_value, contents); + isym.st_value, contents); } } @@ -1120,22 +1139,21 @@ 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 + { + bfd_size_type amt = symtab_hdr->sh_size; + /* Go get them off disk. */ + extsyms = (Elf32_External_Sym *) bfd_malloc (amt); + if (extsyms == NULL) + goto error_return; + free_extsyms = extsyms; + if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 + || bfd_bread (extsyms, amt, input_bfd) != amt) + goto error_return; + } /* Walk over each section in this bfd. */ for (section = input_bfd->sections; @@ -1152,15 +1170,15 @@ 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. */ @@ -1169,7 +1187,7 @@ 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; @@ -1180,7 +1198,6 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) goto error_return; } - shndx = _bfd_elf_section_from_bfd_section (input_bfd, section); /* Now look for any function in this section which needs @@ -1191,10 +1208,11 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) { Elf_Internal_Sym isym; struct elf32_mn10300_link_hash_entry *sym_hash; - asection *sym_sec; + asection *sym_sec = NULL; const char *sym_name; - Elf_Internal_Shdr *hdr; char *new_name; + struct elf_link_hash_table *elftab; + bfd_size_type amt; bfd_elf32_swap_symbol_in (input_bfd, esym, &isym); @@ -1210,6 +1228,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) sym_sec = bfd_abs_section_ptr; else if (isym.st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; + else + abort (); sym_name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, @@ -1217,16 +1237,17 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Tack on an ID so we can uniquely identify this local symbol in the global hash table. */ - new_name = bfd_malloc (strlen (sym_name) + 10); + amt = strlen (sym_name) + 10; + new_name = bfd_malloc (amt); 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 *) - elf_link_hash_lookup (&hash_table->static_hash_table->root, - sym_name, false, - false, false); + elftab = &hash_table->static_hash_table->root; + sym_hash = ((struct elf32_mn10300_link_hash_entry *) + elf_link_hash_lookup (elftab, sym_name, + false, false, false)); free (new_name); if (sym_hash == NULL) @@ -1244,7 +1265,7 @@ 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. */ @@ -1301,7 +1322,7 @@ 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. */ @@ -1367,7 +1388,6 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) } } - /* (Re)initialize for the basic instruction shortening/relaxing pass. */ contents = NULL; extsyms = NULL; @@ -1443,15 +1463,14 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) extsyms = (Elf32_External_Sym *) symtab_hdr->contents; else { + bfd_size_type amt = symtab_hdr->sh_size; /* Go get them off disk. */ - extsyms = ((Elf32_External_Sym *) - bfd_malloc (symtab_hdr->sh_size)); + extsyms = (Elf32_External_Sym *) bfd_malloc (amt); if (extsyms == NULL) goto error_return; free_extsyms = extsyms; if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) - != symtab_hdr->sh_size)) + || bfd_bread (extsyms, amt, abfd) != amt) goto error_return; } } @@ -1460,8 +1479,7 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) { Elf_Internal_Sym isym; - asection *sym_sec; - Elf_Internal_Shdr *hdr; + asection *sym_sec = NULL; const char *sym_name; char *new_name; @@ -1478,6 +1496,8 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) sym_sec = bfd_abs_section_ptr; else if (isym.st_shndx == SHN_COMMON) sym_sec = bfd_com_section_ptr; + else + abort (); symval = (isym.st_value + sym_sec->output_section->vma @@ -1488,10 +1508,10 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) /* Tack on an ID so we can uniquely identify this local symbol in the global hash table. */ - new_name = bfd_malloc (strlen (sym_name) + 10); + new_name = bfd_malloc ((bfd_size_type) 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 *) @@ -1605,7 +1625,7 @@ 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; @@ -1720,7 +1740,7 @@ 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; @@ -1767,7 +1787,6 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) bra lab2 lab1: lab1: - This happens when the bCC can't reach lab2 at assembly time, but due to other relaxations it can reach at link time. */ if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) @@ -1840,48 +1859,48 @@ 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); @@ -1903,6 +1922,78 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) *again = true; } + /* Try to turn a 24 immediate, displacement or absolute address + into a 8 immediate, displacement or absolute address. */ + if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) + { + bfd_vma value = symval; + value += irel->r_addend; + + /* See if the value will fit in 8 bits. */ + if ((long) value < 0x7f && (long) value > -0x80) + { + unsigned char code; + + /* AM33 insns which have 24 operands are 6 bytes long and + will have 0xfd as the first byte. */ + + /* Get the first opcode. */ + code = bfd_get_8 (abfd, contents + irel->r_offset - 3); + + if (code == 0xfd) + { + /* 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. */ + if (code != 0x6b && code != 0x7b + && code != 0x8b && code != 0x9b + && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 + || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b + || (code & 0x0f) == 0x0e)) + { + /* Not safe if the high bit is on as relaxing may + move the value out of high mem and thus not fit + in a signed 8bit value. This is currently over + conservative. */ + if ((value & 0x80) == 0) + { + /* Note that we've changed the relocation contents, + etc. */ + elf_section_data (sec)->relocs = internal_relocs; + free_relocs = NULL; + + elf_section_data (sec)->this_hdr.contents = contents; + free_contents = NULL; + + symtab_hdr->contents = (bfd_byte *) extsyms; + free_extsyms = NULL; + + /* Fix the opcode. */ + bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); + 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); + + /* Delete two bytes of data. */ + if (!mn10300_elf_relax_delete_bytes (abfd, sec, + irel->r_offset + 1, 2)) + goto error_return; + + /* That will change things, so, we should relax + again. Note that this is not required, and it + may be slow. */ + *again = true; + break; + } + } + } + } + } /* Try to turn a 32bit immediate, displacement or absolute address into a 16bit immediate, displacement or absolute address. */ @@ -1911,11 +2002,78 @@ mn10300_elf_relax_section (abfd, sec, link_info, again) bfd_vma value = symval; value += irel->r_addend; + /* 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) + { + unsigned char code; + + /* AM33 insns which have 32bit operands are 7 bytes long and + will have 0xfe as the first byte. */ + + /* Get the first opcode. */ + code = bfd_get_8 (abfd, contents + irel->r_offset - 3); + + if (code == 0xfe) + { + /* Get the second opcode. */ + code = bfd_get_8 (abfd, contents + irel->r_offset - 2); + + /* 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 + && code != 0x8b && code != 0x9b + && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 + || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b + || (code & 0x0f) == 0x0e)) + { + /* Not safe if the high bit is on as relaxing may + move the value out of high mem and thus not fit + in a signed 16bit value. This is currently over + conservative. */ + if ((value & 0x8000) == 0) + { + /* Note that we've changed the relocation contents, + etc. */ + elf_section_data (sec)->relocs = internal_relocs; + free_relocs = NULL; + + elf_section_data (sec)->this_hdr.contents = contents; + free_contents = NULL; + + symtab_hdr->contents = (bfd_byte *) extsyms; + free_extsyms = NULL; + + /* Fix the opcode. */ + bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); + 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); + + /* Delete one byte of data. */ + if (!mn10300_elf_relax_delete_bytes (abfd, sec, + irel->r_offset + 3, 1)) + goto error_return; + + /* That will change things, so, we should relax + again. Note that this is not required, and it + 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; @@ -2050,6 +2208,11 @@ 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; @@ -2098,6 +2261,11 @@ 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; @@ -2143,18 +2311,18 @@ 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: @@ -2170,6 +2338,16 @@ 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; @@ -2218,7 +2396,7 @@ 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, @@ -2333,6 +2511,20 @@ compute_function_info (abfd, hash, addr, contents) if (hash->movm_args & 0x08) hash->movm_stack_size += 8 * 4; + if (bfd_get_mach (abfd) == bfd_mach_am33) + { + /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ + if (hash->movm_args & 0x1) + hash->movm_stack_size += 6 * 4; + + /* exreg1 space. e4, e5, e6, e7 */ + if (hash->movm_args & 0x2) + hash->movm_stack_size += 4 * 4; + + /* exreg0 space. e2, e3 */ + if (hash->movm_args & 0x4) + hash->movm_stack_size += 2 * 4; + } } /* Now look for the two stack adjustment variants. */ @@ -2398,7 +2590,8 @@ mn10300_elf_relax_delete_bytes (abfd, sec, addr, count) irelend = irel + sec->reloc_count; /* Actually delete the bytes. */ - memmove (contents + addr, contents + addr + count, toaddr - addr - count); + memmove (contents + addr, contents + addr + count, + (size_t) (toaddr - addr - count)); sec->_cooked_size -= count; /* Adjust all the relocs. */ @@ -2483,7 +2676,7 @@ mn10300_elf_symbol_address_p (abfd, sec, extsyms, addr) return true; } - sym_hash = (struct elf32_mn10300_link_hash_entry **)(elf_sym_hashes (abfd)); + sym_hash = (struct elf32_mn10300_link_hash_entry **) (elf_sym_hashes (abfd)); sym_hash_end = (sym_hash + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - symtab_hdr->sh_info)); @@ -2531,7 +2724,7 @@ mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; memcpy (data, elf_section_data (input_section)->this_hdr.contents, - input_section->_raw_size); + (size_t) input_section->_raw_size); if ((input_section->flags & SEC_RELOC) != 0 && input_section->reloc_count > 0) @@ -2539,20 +2732,19 @@ mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, Elf_Internal_Sym *isymp; asection **secpp; Elf32_External_Sym *esym, *esymend; + bfd_size_type size; if (symtab_hdr->contents != NULL) external_syms = (Elf32_External_Sym *) symtab_hdr->contents; else { - external_syms = ((Elf32_External_Sym *) - bfd_malloc (symtab_hdr->sh_info - * sizeof (Elf32_External_Sym))); - if (external_syms == NULL && symtab_hdr->sh_info > 0) + size = symtab_hdr->sh_info; + size *= sizeof (Elf32_External_Sym); + external_syms = (Elf32_External_Sym *) bfd_malloc (size); + if (external_syms == NULL && size != 0) goto error_return; if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 - || (bfd_read (external_syms, sizeof (Elf32_External_Sym), - symtab_hdr->sh_info, input_bfd) - != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) + || bfd_bread (external_syms, size, input_bfd) != size) goto error_return; } @@ -2562,15 +2754,16 @@ mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, if (internal_relocs == NULL) goto error_return; - internal_syms = ((Elf_Internal_Sym *) - bfd_malloc (symtab_hdr->sh_info - * sizeof (Elf_Internal_Sym))); - if (internal_syms == NULL && symtab_hdr->sh_info > 0) + size = symtab_hdr->sh_info; + size *= sizeof (Elf_Internal_Sym); + internal_syms = (Elf_Internal_Sym *) bfd_malloc (size); + if (internal_syms == NULL && size != 0) goto error_return; - sections = (asection **) bfd_malloc (symtab_hdr->sh_info - * sizeof (asection *)); - if (sections == NULL && symtab_hdr->sh_info > 0) + size = symtab_hdr->sh_info; + size *= sizeof (asection *); + sections = (asection **) bfd_malloc (size); + if (sections == NULL && size != 0) goto error_return; isymp = internal_syms; @@ -2681,9 +2874,9 @@ elf32_mn10300_link_hash_table_create (abfd) bfd *abfd; { struct elf32_mn10300_link_hash_table *ret; + bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table); - ret = ((struct elf32_mn10300_link_hash_table *) - bfd_alloc (abfd, sizeof (struct elf32_mn10300_link_hash_table))); + ret = (struct elf32_mn10300_link_hash_table *) bfd_alloc (abfd, amt); if (ret == (struct elf32_mn10300_link_hash_table *) NULL) return NULL; @@ -2695,9 +2888,9 @@ elf32_mn10300_link_hash_table_create (abfd) } ret->flags = 0; + amt = sizeof (struct elf_link_hash_table); ret->static_hash_table - = ((struct elf32_mn10300_link_hash_table *) - bfd_alloc (abfd, sizeof (struct elf_link_hash_table))); + = (struct elf32_mn10300_link_hash_table *) bfd_alloc (abfd, amt); if (ret->static_hash_table == NULL) { bfd_release (abfd, ret); @@ -2714,16 +2907,18 @@ elf32_mn10300_link_hash_table_create (abfd) return &ret->root.root; } -static int +static unsigned long elf_mn10300_mach (flags) flagword 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; } } @@ -2731,25 +2926,23 @@ 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; - boolean linker; + boolean linker ATTRIBUTE_UNUSED; { unsigned long val; - unsigned int i; - Elf_Internal_Shdr **hdrpp; - const char *name; - asection *sec; switch (bfd_get_mach (abfd)) { - default: - case bfd_mach_mn10300: - val = E_MN10300_MACH_MN10300; - 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); @@ -2761,7 +2954,7 @@ _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; } @@ -2788,11 +2981,11 @@ _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) return true; } - #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec #define TARGET_LITTLE_NAME "elf32-mn10300" #define ELF_ARCH bfd_arch_mn10300 -#define ELF_MACHINE_CODE EM_CYGNUS_MN10300 +#define ELF_MACHINE_CODE EM_MN10300 +#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 #define ELF_MAXPAGESIZE 0x1000 #define elf_info_to_howto mn10300_info_to_howto @@ -2817,5 +3010,4 @@ _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) #define bfd_elf32_bfd_merge_private_bfd_data \ _bfd_mn10300_elf_merge_private_bfd_data - #include "elf32-target.h"