X-Git-Url: https://oss.titaniummirror.com/gitweb?p=msp430-binutils.git;a=blobdiff_plain;f=bfd%2Felfcode.h;fp=bfd%2Felfcode.h;h=f5391194b686c30547879798a9d68ce448acdbe7;hp=e16f579f951d443e6052d1bb4e93eb30741d9034;hb=d5da4f291af551c0b8b79e1d4a9b173d60e5c10e;hpb=7b5ea4fcdf2819e070665ab5610f8b48e3867c10 diff --git a/bfd/elfcode.h b/bfd/elfcode.h index e16f579..f539119 100644 --- a/bfd/elfcode.h +++ b/bfd/elfcode.h @@ -1,6 +1,6 @@ /* ELF executable support for BFD. Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2001, 2002, 2003, 2004, 2005, 2006, 2007 + 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. Written by Fred Fish @ Cygnus Support, from information published @@ -176,8 +176,8 @@ elf_swap_symbol_in (bfd *abfd, const void *pshn, Elf_Internal_Sym *dst) { - const Elf_External_Sym *src = psrc; - const Elf_External_Sym_Shndx *shndx = pshn; + const Elf_External_Sym *src = (const Elf_External_Sym *) psrc; + const Elf_External_Sym_Shndx *shndx = (const Elf_External_Sym_Shndx *) pshn; int signed_vma = get_elf_backend_data (abfd)->sign_extend_vma; dst->st_name = H_GET_32 (abfd, src->st_name); @@ -189,12 +189,14 @@ elf_swap_symbol_in (bfd *abfd, dst->st_info = H_GET_8 (abfd, src->st_info); dst->st_other = H_GET_8 (abfd, src->st_other); dst->st_shndx = H_GET_16 (abfd, src->st_shndx); - if (dst->st_shndx == SHN_XINDEX) + if (dst->st_shndx == (SHN_XINDEX & 0xffff)) { if (shndx == NULL) return FALSE; dst->st_shndx = H_GET_32 (abfd, shndx->est_shndx); } + else if (dst->st_shndx >= (SHN_LORESERVE & 0xffff)) + dst->st_shndx += SHN_LORESERVE - (SHN_LORESERVE & 0xffff); return TRUE; } @@ -208,19 +210,19 @@ elf_swap_symbol_out (bfd *abfd, void *shndx) { unsigned int tmp; - Elf_External_Sym *dst = cdst; + Elf_External_Sym *dst = (Elf_External_Sym *) cdst; H_PUT_32 (abfd, src->st_name, dst->st_name); H_PUT_WORD (abfd, src->st_value, dst->st_value); H_PUT_WORD (abfd, src->st_size, dst->st_size); H_PUT_8 (abfd, src->st_info, dst->st_info); H_PUT_8 (abfd, src->st_other, dst->st_other); tmp = src->st_shndx; - if (tmp > SHN_HIRESERVE) + if (tmp >= (SHN_LORESERVE & 0xffff) && tmp < SHN_LORESERVE) { if (shndx == NULL) abort (); H_PUT_32 (abfd, tmp, shndx); - tmp = SHN_XINDEX; + tmp = SHN_XINDEX & 0xffff; } H_PUT_16 (abfd, tmp, dst->st_shndx); } @@ -280,12 +282,12 @@ elf_swap_ehdr_out (bfd *abfd, H_PUT_16 (abfd, src->e_phnum, dst->e_phnum); H_PUT_16 (abfd, src->e_shentsize, dst->e_shentsize); tmp = src->e_shnum; - if (tmp >= SHN_LORESERVE) + if (tmp >= (SHN_LORESERVE & 0xffff)) tmp = SHN_UNDEF; H_PUT_16 (abfd, tmp, dst->e_shnum); tmp = src->e_shstrndx; - if (tmp >= SHN_LORESERVE) - tmp = SHN_XINDEX; + if (tmp >= (SHN_LORESERVE & 0xffff)) + tmp = SHN_XINDEX & 0xffff; H_PUT_16 (abfd, tmp, dst->e_shstrndx); } @@ -370,11 +372,17 @@ elf_swap_phdr_out (bfd *abfd, const Elf_Internal_Phdr *src, Elf_External_Phdr *dst) { + const struct elf_backend_data *bed; + bfd_vma p_paddr; + + bed = get_elf_backend_data (abfd); + p_paddr = bed->want_p_paddr_set_to_zero ? 0 : src->p_paddr; + /* note that all elements of dst are *arrays of unsigned char* already... */ H_PUT_32 (abfd, src->p_type, dst->p_type); H_PUT_WORD (abfd, src->p_offset, dst->p_offset); H_PUT_WORD (abfd, src->p_vaddr, dst->p_vaddr); - H_PUT_WORD (abfd, src->p_paddr, dst->p_paddr); + H_PUT_WORD (abfd, p_paddr, dst->p_paddr); H_PUT_WORD (abfd, src->p_filesz, dst->p_filesz); H_PUT_WORD (abfd, src->p_memsz, dst->p_memsz); H_PUT_32 (abfd, src->p_flags, dst->p_flags); @@ -431,7 +439,7 @@ elf_swap_dyn_in (bfd *abfd, const void *p, Elf_Internal_Dyn *dst) { - const Elf_External_Dyn *src = p; + const Elf_External_Dyn *src = (const Elf_External_Dyn *) p; dst->d_tag = H_GET_WORD (abfd, src->d_tag); dst->d_un.d_val = H_GET_WORD (abfd, src->d_un.d_val); @@ -442,7 +450,7 @@ elf_swap_dyn_out (bfd *abfd, const Elf_Internal_Dyn *src, void *p) { - Elf_External_Dyn *dst = p; + Elf_External_Dyn *dst = (Elf_External_Dyn *) p; H_PUT_WORD (abfd, src->d_tag, dst->d_tag); H_PUT_WORD (abfd, src->d_un.d_val, dst->d_un.d_val); @@ -464,25 +472,6 @@ elf_file_p (Elf_External_Ehdr *x_ehdrp) && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3)); } -/* Determines if a given section index is valid. */ - -static inline bfd_boolean -valid_section_index_p (unsigned index, unsigned num_sections) -{ - /* Note: We allow SHN_UNDEF as a valid section index. */ - if (index < SHN_LORESERVE || index > SHN_HIRESERVE) - return index < num_sections; - - /* We disallow the use of reserved indcies, except for those - with OS or Application specific meaning. The test make use - of the knowledge that: - SHN_LORESERVE == SHN_LOPROC - and - SHN_HIPROC == SHN_LOOS - 1 */ - /* XXX - Should we allow SHN_XINDEX as a valid index here ? */ - return (index >= SHN_LOPROC && index <= SHN_HIOS); -} - /* Check to see if the file associated with ABFD matches the target vector that ABFD points to. @@ -585,6 +574,8 @@ elf_object_p (bfd *abfd) goto got_wrong_format_error; ebd = get_elf_backend_data (abfd); + if (ebd->s->arch_size != ARCH_SIZE) + goto got_wrong_format_error; /* Check that the ELF e_machine field matches what this particular BFD format expects. */ @@ -606,6 +597,8 @@ elf_object_p (bfd *abfd) if ((*target_ptr)->flavour != bfd_target_elf_flavour) continue; back = xvec_get_elf_backend_data (*target_ptr); + if (back->s->arch_size != ARCH_SIZE) + continue; if (back->elf_machine_code == i_ehdrp->e_machine || (back->elf_machine_alt1 != 0 && back->elf_machine_alt1 == i_ehdrp->e_machine) @@ -701,7 +694,7 @@ elf_object_p (bfd *abfd) } /* And similarly for the string table index. */ - if (i_ehdrp->e_shstrndx == SHN_XINDEX) + if (i_ehdrp->e_shstrndx == (SHN_XINDEX & 0xffff)) { i_ehdrp->e_shstrndx = i_shdr.sh_link; if (i_ehdrp->e_shstrndx != i_shdr.sh_link) @@ -743,29 +736,18 @@ elf_object_p (bfd *abfd) unsigned int num_sec; amt = sizeof (*i_shdrp) * i_ehdrp->e_shnum; - i_shdrp = bfd_alloc (abfd, amt); + i_shdrp = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt); if (!i_shdrp) goto got_no_match; num_sec = i_ehdrp->e_shnum; - if (num_sec > SHN_LORESERVE) - num_sec += SHN_HIRESERVE + 1 - SHN_LORESERVE; elf_numsections (abfd) = num_sec; amt = sizeof (i_shdrp) * num_sec; - elf_elfsections (abfd) = bfd_alloc (abfd, amt); + elf_elfsections (abfd) = (Elf_Internal_Shdr **) bfd_alloc (abfd, amt); if (!elf_elfsections (abfd)) goto got_no_match; memcpy (i_shdrp, &i_shdr, sizeof (*i_shdrp)); - shdrp = i_shdrp; - shindex = 0; - if (num_sec > SHN_LORESERVE) - { - for ( ; shindex < SHN_LORESERVE; shindex++) - elf_elfsections (abfd)[shindex] = shdrp++; - for ( ; shindex < SHN_HIRESERVE + 1; shindex++) - elf_elfsections (abfd)[shindex] = i_shdrp; - } - for ( ; shindex < num_sec; shindex++) + for (shdrp = i_shdrp, shindex = 0; shindex < num_sec; shindex++) elf_elfsections (abfd)[shindex] = shdrp++; /* Read in the rest of the section header table and convert it @@ -777,13 +759,29 @@ elf_object_p (bfd *abfd) elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex); /* Sanity check sh_link and sh_info. */ - if (! valid_section_index_p (i_shdrp[shindex].sh_link, num_sec)) - goto got_wrong_format_error; + if (i_shdrp[shindex].sh_link >= num_sec) + { + /* PR 10478: Accept sparc binaries with a sh_link + field set to SHN_BEFORE or SHN_AFTER. */ + switch (ebd->elf_machine_code) + { + case EM_OLD_SPARCV9: + case EM_SPARC32PLUS: + case EM_SPARCV9: + case EM_SPARC: + if (i_shdrp[shindex].sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */ + || i_shdrp[shindex].sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */) + break; + /* Otherwise fall through. */ + default: + goto got_wrong_format_error; + } + } if (((i_shdrp[shindex].sh_flags & SHF_INFO_LINK) || i_shdrp[shindex].sh_type == SHT_RELA || i_shdrp[shindex].sh_type == SHT_REL) - && ! valid_section_index_p (i_shdrp[shindex].sh_info, num_sec)) + && i_shdrp[shindex].sh_info >= num_sec) goto got_wrong_format_error; /* If the section is loaded, but not page aligned, clear @@ -801,7 +799,7 @@ elf_object_p (bfd *abfd) /* A further sanity check. */ if (i_ehdrp->e_shnum != 0) { - if (! valid_section_index_p (i_ehdrp->e_shstrndx, elf_numsections (abfd))) + if (i_ehdrp->e_shstrndx >= elf_numsections (abfd)) { /* PR 2257: We used to just goto got_wrong_format_error here @@ -825,7 +823,7 @@ elf_object_p (bfd *abfd) unsigned int i; amt = i_ehdrp->e_phnum * sizeof (Elf_Internal_Phdr); - elf_tdata (abfd)->phdr = bfd_alloc (abfd, amt); + elf_tdata (abfd)->phdr = (Elf_Internal_Phdr *) bfd_alloc (abfd, amt); if (elf_tdata (abfd)->phdr == NULL) goto got_no_match; if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_phoff, SEEK_SET) != 0) @@ -850,12 +848,8 @@ elf_object_p (bfd *abfd) a dummy placeholder entry, so we ignore it. */ num_sec = elf_numsections (abfd); for (shindex = 1; shindex < num_sec; shindex++) - { - if (! bfd_section_from_shdr (abfd, shindex)) - goto got_no_match; - if (shindex == SHN_LORESERVE - 1) - shindex += SHN_HIRESERVE + 1 - SHN_LORESERVE; - } + if (!bfd_section_from_shdr (abfd, shindex)) + goto got_no_match; /* Set up ELF sections for SHF_GROUP and SHF_LINK_ORDER. */ if (! _bfd_elf_setup_sections (abfd)) @@ -920,7 +914,7 @@ elf_object_p (bfd *abfd) void elf_write_relocs (bfd *abfd, asection *sec, void *data) { - bfd_boolean *failedp = data; + bfd_boolean *failedp = (bfd_boolean *) data; Elf_Internal_Shdr *rela_hdr; bfd_vma addr_offset; void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); @@ -953,7 +947,7 @@ elf_write_relocs (bfd *abfd, asection *sec, void *data) rela_hdr = &elf_section_data (sec)->rel_hdr; rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count; - rela_hdr->contents = bfd_alloc (abfd, rela_hdr->sh_size); + rela_hdr->contents = (unsigned char *) bfd_alloc (abfd, rela_hdr->sh_size); if (rela_hdr->contents == NULL) { *failedp = TRUE; @@ -1075,15 +1069,15 @@ elf_write_shdrs_and_ehdr (bfd *abfd) /* Some fields in the first section header handle overflow of ehdr fields. */ - if (i_ehdrp->e_shnum >= SHN_LORESERVE) + if (i_ehdrp->e_shnum >= (SHN_LORESERVE & 0xffff)) i_shdrp[0]->sh_size = i_ehdrp->e_shnum; - if (i_ehdrp->e_shstrndx >= SHN_LORESERVE) + if (i_ehdrp->e_shstrndx >= (SHN_LORESERVE & 0xffff)) i_shdrp[0]->sh_link = i_ehdrp->e_shstrndx; /* at this point we've concocted all the ELF sections... */ amt = i_ehdrp->e_shnum; amt *= sizeof (*x_shdrp); - x_shdrp = bfd_alloc (abfd, amt); + x_shdrp = (Elf_External_Shdr *) bfd_alloc (abfd, amt); if (!x_shdrp) return FALSE; @@ -1093,9 +1087,6 @@ elf_write_shdrs_and_ehdr (bfd *abfd) elf_debug_section (count, *i_shdrp); #endif elf_swap_shdr_out (abfd, *i_shdrp, x_shdrp + count); - - if (count == SHN_LORESERVE - 1) - i_shdrp += SHN_HIRESERVE + 1 - SHN_LORESERVE; } if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0 || bfd_bwrite (x_shdrp, amt, abfd) != amt) @@ -1214,7 +1205,7 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) amt = symcount; amt *= sizeof (elf_symbol_type); - symbase = bfd_zalloc (abfd, amt); + symbase = (elf_symbol_type *) bfd_zalloc (abfd, amt); if (symbase == (elf_symbol_type *) NULL) goto error_return; @@ -1238,7 +1229,7 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0) goto error_return; - xverbuf = bfd_malloc (verhdr->sh_size); + xverbuf = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size); if (xverbuf == NULL && verhdr->sh_size != 0) goto error_return; @@ -1264,19 +1255,6 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) { sym->symbol.section = bfd_und_section_ptr; } - else if (isym->st_shndx < SHN_LORESERVE - || isym->st_shndx > SHN_HIRESERVE) - { - sym->symbol.section = bfd_section_from_elf_index (abfd, - isym->st_shndx); - if (sym->symbol.section == NULL) - { - /* This symbol is in a section for which we did not - create a BFD section. Just use bfd_abs_section, - although it is wrong. FIXME. */ - sym->symbol.section = bfd_abs_section_ptr; - } - } else if (isym->st_shndx == SHN_ABS) { sym->symbol.section = bfd_abs_section_ptr; @@ -1291,7 +1269,17 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) sym->symbol.value = isym->st_size; } else - sym->symbol.section = bfd_abs_section_ptr; + { + sym->symbol.section + = bfd_section_from_elf_index (abfd, isym->st_shndx); + if (sym->symbol.section == NULL) + { + /* This symbol is in a section for which we did not + create a BFD section. Just use bfd_abs_section, + although it is wrong. FIXME. */ + sym->symbol.section = bfd_abs_section_ptr; + } + } /* If this is a relocatable file, then the symbol value is already section relative. */ @@ -1310,6 +1298,9 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) case STB_WEAK: sym->symbol.flags |= BSF_WEAK; break; + case STB_GNU_UNIQUE: + sym->symbol.flags |= BSF_GNU_UNIQUE; + break; } switch (ELF_ST_TYPE (isym->st_info)) @@ -1323,6 +1314,10 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) case STT_FUNC: sym->symbol.flags |= BSF_FUNCTION; break; + case STT_COMMON: + /* FIXME: Do we have to put the size field into the value field + as we do with symbols in SHN_COMMON sections (see above) ? */ + /* Fall through. */ case STT_OBJECT: sym->symbol.flags |= BSF_OBJECT; break; @@ -1335,6 +1330,9 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) case STT_SRELC: sym->symbol.flags |= BSF_SRELC; break; + case STT_GNU_IFUNC: + sym->symbol.flags |= BSF_GNU_INDIRECT_FUNCTION; + break; } if (dynamic) @@ -1420,7 +1418,7 @@ elf_slurp_reloc_table_from_section (bfd *abfd, != rel_hdr->sh_size)) goto error_return; - native_relocs = allocated; + native_relocs = (bfd_byte *) allocated; entsize = rel_hdr->sh_entsize; BFD_ASSERT (entsize == sizeof (Elf_External_Rel) @@ -1541,7 +1539,7 @@ elf_slurp_reloc_table (bfd *abfd, } amt = (reloc_count + reloc_count2) * sizeof (arelent); - relents = bfd_alloc (abfd, amt); + relents = (arelent *) bfd_alloc (abfd, amt); if (relents == NULL) return FALSE; @@ -1635,6 +1633,7 @@ NAME(_bfd_elf,bfd_from_remote_memory) int err; unsigned int i; bfd_vma loadbase; + bfd_boolean loadbase_set; /* Read in the ELF header in external format. */ err = target_read_memory (ehdr_vma, (bfd_byte *) &x_ehdr, sizeof x_ehdr); @@ -1691,7 +1690,8 @@ NAME(_bfd_elf,bfd_from_remote_memory) return NULL; } - x_phdrs = bfd_malloc (i_ehdr.e_phnum * (sizeof *x_phdrs + sizeof *i_phdrs)); + x_phdrs = (Elf_External_Phdr *) + bfd_malloc (i_ehdr.e_phnum * (sizeof *x_phdrs + sizeof *i_phdrs)); if (x_phdrs == NULL) { bfd_set_error (bfd_error_no_memory); @@ -1711,13 +1711,11 @@ NAME(_bfd_elf,bfd_from_remote_memory) contents_size = 0; last_phdr = NULL; loadbase = ehdr_vma; + loadbase_set = FALSE; for (i = 0; i < i_ehdr.e_phnum; ++i) { elf_swap_phdr_in (templ, &x_phdrs[i], &i_phdrs[i]); - /* IA-64 vDSO may have two mappings for one segment, where one mapping - is executable only, and one is read only. We must not use the - executable one. */ - if (i_phdrs[i].p_type == PT_LOAD && (i_phdrs[i].p_flags & PF_R)) + if (i_phdrs[i].p_type == PT_LOAD) { bfd_vma segment_end; segment_end = (i_phdrs[i].p_offset + i_phdrs[i].p_filesz @@ -1725,8 +1723,14 @@ NAME(_bfd_elf,bfd_from_remote_memory) if (segment_end > (bfd_vma) contents_size) contents_size = segment_end; - if ((i_phdrs[i].p_offset & -i_phdrs[i].p_align) == 0) - loadbase = ehdr_vma - (i_phdrs[i].p_vaddr & -i_phdrs[i].p_align); + /* LOADADDR is the `Base address' from the gELF specification: + `lowest p_vaddr value for a PT_LOAD segment' is P_VADDR from the + first PT_LOAD as PT_LOADs are ordered by P_VADDR. */ + if (!loadbase_set && (i_phdrs[i].p_offset & -i_phdrs[i].p_align) == 0) + { + loadbase = ehdr_vma - (i_phdrs[i].p_vaddr & -i_phdrs[i].p_align); + loadbase_set = TRUE; + } last_phdr = &i_phdrs[i]; } @@ -1755,7 +1759,7 @@ NAME(_bfd_elf,bfd_from_remote_memory) contents_size = last_phdr->p_offset + last_phdr->p_filesz; /* Now we know the size of the whole image we want read in. */ - contents = bfd_zmalloc (contents_size); + contents = (bfd_byte *) bfd_zmalloc (contents_size); if (contents == NULL) { free (x_phdrs); @@ -1764,10 +1768,7 @@ NAME(_bfd_elf,bfd_from_remote_memory) } for (i = 0; i < i_ehdr.e_phnum; ++i) - /* IA-64 vDSO may have two mappings for one segment, where one mapping - is executable only, and one is read only. We must not use the - executable one. */ - if (i_phdrs[i].p_type == PT_LOAD && (i_phdrs[i].p_flags & PF_R)) + if (i_phdrs[i].p_type == PT_LOAD) { bfd_vma start = i_phdrs[i].p_offset & -i_phdrs[i].p_align; bfd_vma end = (i_phdrs[i].p_offset + i_phdrs[i].p_filesz @@ -1803,7 +1804,7 @@ NAME(_bfd_elf,bfd_from_remote_memory) memcpy (contents, &x_ehdr, sizeof x_ehdr); /* Now we have a memory image of the ELF file contents. Make a BFD. */ - bim = bfd_malloc (sizeof (struct bfd_in_memory)); + bim = (struct bfd_in_memory *) bfd_malloc (sizeof (struct bfd_in_memory)); if (bim == NULL) { free (contents);