X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felfcode.h;h=5142273c05470d35046452f05d8675017b3cd200;hb=8b10b0b3e100c25322a083248c7a18bf5a1f3527;hp=5ef461018d97bbc8e08d9150a894ae26e60e50f8;hpb=d4730f921aed32ae4f01e10b8dc399f09b64435b;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elfcode.h b/bfd/elfcode.h index 5ef461018d..5142273c05 100644 --- a/bfd/elfcode.h +++ b/bfd/elfcode.h @@ -1,7 +1,5 @@ /* ELF executable support for BFD. - Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 - Free Software Foundation, Inc. + Copyright (C) 1991-2017 Free Software Foundation, Inc. Written by Fred Fish @ Cygnus Support, from information published in "UNIX System V Release 4, Programmers Guide: ANSI C and @@ -73,6 +71,7 @@ #include "bfdlink.h" #include "libbfd.h" #include "elf-bfd.h" +#include "libiberty.h" /* Renaming structures, typedefs, macros and functions to be size-specific. */ #define Elf_External_Ehdr NAME(Elf,External_Ehdr) @@ -198,6 +197,7 @@ elf_swap_symbol_in (bfd *abfd, } else if (dst->st_shndx >= (SHN_LORESERVE & 0xffff)) dst->st_shndx += SHN_LORESERVE - (SHN_LORESERVE & 0xffff); + dst->st_target_internal = 0; return TRUE; } @@ -494,13 +494,9 @@ elf_object_p (bfd *abfd) Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */ unsigned int shindex; const struct elf_backend_data *ebd; - struct bfd_preserve preserve; asection *s; bfd_size_type amt; const bfd_target *target; - const bfd_target * const *target_ptr; - - preserve.marker = NULL; /* Read in the ELF header in external format. */ @@ -539,9 +535,6 @@ elf_object_p (bfd *abfd) goto got_wrong_format_error; } - if (!bfd_preserve_save (abfd, &preserve)) - goto got_no_match; - target = abfd->xvec; /* Allocate an instance of the elf_obj_tdata structure and hook it up to @@ -549,7 +542,6 @@ elf_object_p (bfd *abfd) if (! (*target->_bfd_set_format[bfd_object]) (abfd)) goto got_no_match; - preserve.marker = elf_tdata (abfd); /* Now that we know the byte order, swap in the rest of the header */ i_ehdrp = elf_elfheader (abfd); @@ -587,34 +579,9 @@ elf_object_p (bfd *abfd) && (ebd->elf_machine_alt1 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt1) && (ebd->elf_machine_alt2 == 0 - || i_ehdrp->e_machine != ebd->elf_machine_alt2)) - { - if (ebd->elf_machine_code != EM_NONE) - goto got_wrong_format_error; - - /* This is the generic ELF target. Let it match any ELF target - for which we do not have a specific backend. */ - for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++) - { - const struct elf_backend_data *back; - - 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) - || (back->elf_machine_alt2 != 0 - && back->elf_machine_alt2 == i_ehdrp->e_machine)) - { - /* target_ptr is an ELF backend which matches this - object file, so reject the generic ELF target. */ - goto got_wrong_format_error; - } - } - } + || i_ehdrp->e_machine != ebd->elf_machine_alt2) + && ebd->elf_machine_code != EM_NONE) + goto got_wrong_format_error; if (i_ehdrp->e_type == ET_EXEC) abfd->flags |= EXEC_P; @@ -632,53 +599,16 @@ elf_object_p (bfd *abfd) } if (ebd->elf_machine_code != EM_NONE - && i_ehdrp->e_ident[EI_OSABI] != ebd->elf_osabi) - { - if (ebd->elf_osabi != ELFOSABI_NONE) - goto got_wrong_format_error; - - /* This is an ELFOSABI_NONE ELF target. Let it match any ELF - target of the compatible machine for which we do not have a - backend with matching ELFOSABI. */ - for (target_ptr = bfd_target_vector; - *target_ptr != NULL; - target_ptr++) - { - const struct elf_backend_data *back; - - /* Skip this target and targets with incompatible byte - order. */ - if (*target_ptr == target - || (*target_ptr)->flavour != bfd_target_elf_flavour - || (*target_ptr)->byteorder != target->byteorder - || ((*target_ptr)->header_byteorder - != target->header_byteorder)) - continue; - - back = xvec_get_elf_backend_data (*target_ptr); - if (back->elf_osabi == i_ehdrp->e_ident[EI_OSABI] - && (back->elf_machine_code == i_ehdrp->e_machine - || (back->elf_machine_alt1 != 0 - && back->elf_machine_alt1 == i_ehdrp->e_machine) - || (back->elf_machine_alt2 != 0 - && back->elf_machine_alt2 == i_ehdrp->e_machine))) - { - /* target_ptr is an ELF backend which matches this - object file, so reject the ELFOSABI_NONE ELF target. */ - goto got_wrong_format_error; - } - } - } + && i_ehdrp->e_ident[EI_OSABI] != ebd->elf_osabi + && ebd->elf_osabi != ELFOSABI_NONE) + goto got_wrong_format_error; if (i_ehdrp->e_shoff != 0) { - bfd_signed_vma where = i_ehdrp->e_shoff; - - if (where != (file_ptr) where) - goto got_wrong_format_error; + file_ptr where = (file_ptr) i_ehdrp->e_shoff; /* Seek to the section header table in the file. */ - if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0) + if (bfd_seek (abfd, where, SEEK_SET) != 0) goto got_no_match; /* Read the first section header at index 0, and convert to internal @@ -692,8 +622,9 @@ elf_object_p (bfd *abfd) if (i_ehdrp->e_shnum == SHN_UNDEF) { i_ehdrp->e_shnum = i_shdr.sh_size; - if (i_ehdrp->e_shnum != i_shdr.sh_size - || i_ehdrp->e_shnum == 0) + if (i_ehdrp->e_shnum >= SHN_LORESERVE + || i_ehdrp->e_shnum != i_shdr.sh_size + || i_ehdrp->e_shnum == 0) goto got_wrong_format_error; } @@ -723,19 +654,17 @@ elf_object_p (bfd *abfd) goto got_wrong_format_error; where += (i_ehdrp->e_shnum - 1) * sizeof (x_shdr); - if (where != (file_ptr) where) - goto got_wrong_format_error; if ((bfd_size_type) where <= i_ehdrp->e_shoff) goto got_wrong_format_error; - if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0) + if (bfd_seek (abfd, where, SEEK_SET) != 0) goto got_no_match; if (bfd_bread (&x_shdr, sizeof x_shdr, abfd) != sizeof (x_shdr)) goto got_no_match; /* Back to where we were. */ where = i_ehdrp->e_shoff + sizeof (x_shdr); - if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0) + if (bfd_seek (abfd, where, SEEK_SET) != 0) goto got_no_match; } } @@ -747,6 +676,10 @@ elf_object_p (bfd *abfd) Elf_Internal_Shdr *shdrp; unsigned int num_sec; +#ifndef BFD64 + if (i_ehdrp->e_shnum > ((bfd_size_type) -1) / sizeof (*i_shdrp)) + goto got_wrong_format_error; +#endif amt = sizeof (*i_shdrp) * i_ehdrp->e_shnum; i_shdrp = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt); if (!i_shdrp) @@ -778,7 +711,7 @@ elf_object_p (bfd *abfd) switch (ebd->elf_machine_code) { case EM_386: - case EM_486: + case EM_IAMCU: case EM_X86_64: case EM_OLD_SPARCV9: case EM_SPARC32PLUS: @@ -823,7 +756,8 @@ elf_object_p (bfd *abfd) So we are kind, and reset the string index value to 0 so that at least some processing can be done. */ i_ehdrp->e_shstrndx = SHN_UNDEF; - _bfd_error_handler (_("warning: %s has a corrupt string table index - ignoring"), abfd->filename); + _bfd_error_handler (_("warning: %s has a corrupt string table index - ignoring"), + abfd->filename); } } else if (i_ehdrp->e_shstrndx != SHN_UNDEF) @@ -837,7 +771,11 @@ elf_object_p (bfd *abfd) Elf_Internal_Phdr *i_phdr; unsigned int i; - amt = i_ehdrp->e_phnum * sizeof (Elf_Internal_Phdr); +#ifndef BFD64 + if (i_ehdrp->e_phnum > ((bfd_size_type) -1) / sizeof (*i_phdr)) + goto got_wrong_format_error; +#endif + amt = i_ehdrp->e_phnum * sizeof (*i_phdr); elf_tdata (abfd)->phdr = (Elf_Internal_Phdr *) bfd_alloc (abfd, amt); if (elf_tdata (abfd)->phdr == NULL) goto got_no_match; @@ -900,25 +838,12 @@ elf_object_p (bfd *abfd) s->flags |= SEC_DEBUGGING; } } - - bfd_preserve_finish (abfd, &preserve); return target; got_wrong_format_error: - /* There is way too much undoing of half-known state here. The caller, - bfd_check_format_matches, really shouldn't iterate on live bfd's to - check match/no-match like it does. We have to rely on that a call to - bfd_default_set_arch_mach with the previously known mach, undoes what - was done by the first bfd_default_set_arch_mach (with mach 0) here. - For this to work, only elf-data and the mach may be changed by the - target-specific elf_backend_object_p function. Note that saving the - whole bfd here and restoring it would be even worse; the first thing - you notice is that the cached bfd file position gets out of sync. */ bfd_set_error (bfd_error_wrong_format); got_no_match: - if (preserve.marker != NULL) - bfd_preserve_restore (abfd, &preserve); return NULL; } @@ -1049,6 +974,7 @@ elf_write_out_phdrs (bfd *abfd, while (count--) { Elf_External_Phdr extphdr; + elf_swap_phdr_out (abfd, phdr, &extphdr); if (bfd_bwrite (&extphdr, sizeof (Elf_External_Phdr), abfd) != sizeof (Elf_External_Phdr)) @@ -1149,6 +1075,7 @@ elf_checksum_contents (bfd *abfd, { Elf_Internal_Shdr i_shdr; Elf_External_Shdr x_shdr; + bfd_byte *contents, *free_contents; i_shdr = *i_shdrp[count]; i_shdr.sh_offset = 0; @@ -1156,8 +1083,36 @@ elf_checksum_contents (bfd *abfd, elf_swap_shdr_out (abfd, &i_shdr, &x_shdr); (*process) (&x_shdr, sizeof x_shdr, arg); - if (i_shdr.contents) - (*process) (i_shdr.contents, i_shdr.sh_size, arg); + /* Process the section's contents, if it has some. + PR ld/12451: Read them in if necessary. */ + if (i_shdr.sh_type == SHT_NOBITS) + continue; + free_contents = NULL; + contents = i_shdr.contents; + if (contents == NULL) + { + asection *sec; + + sec = bfd_section_from_elf_index (abfd, count); + if (sec != NULL) + { + contents = sec->contents; + if (contents == NULL) + { + /* Force rereading from file. */ + sec->flags &= ~SEC_IN_MEMORY; + if (!bfd_malloc_and_get_section (abfd, sec, &free_contents)) + continue; + contents = free_contents; + } + } + } + if (contents != NULL) + { + (*process) (contents, i_shdr.sh_size, arg); + if (free_contents != NULL) + free (free_contents); + } } return TRUE; @@ -1201,9 +1156,9 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) verhdr = NULL; else verhdr = &elf_tdata (abfd)->dynversym_hdr; - if ((elf_tdata (abfd)->dynverdef_section != 0 + if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL) - || (elf_tdata (abfd)->dynverref_section != 0 + || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL)) { if (!_bfd_elf_slurp_version_tables (abfd, FALSE)) @@ -1232,7 +1187,8 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) if (verhdr != NULL && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount) { - (*_bfd_error_handler) + _bfd_error_handler + /* xgettext:c-format */ (_("%s: version count (%ld) does not match symbol count (%ld)"), abfd->filename, (long) (verhdr->sh_size / sizeof (Elf_External_Versym)), @@ -1264,10 +1220,9 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) for (isym = isymbuf + 1, sym = symbase; isym < isymend; isym++, sym++) { memcpy (&sym->internal_elf_sym, isym, sizeof (Elf_Internal_Sym)); - sym->symbol.the_bfd = abfd; + sym->symbol.the_bfd = abfd; sym->symbol.name = bfd_elf_sym_name (abfd, hdr, isym, NULL); - sym->symbol.value = isym->st_value; if (isym->st_shndx == SHN_UNDEF) @@ -1281,6 +1236,20 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) else if (isym->st_shndx == SHN_COMMON) { sym->symbol.section = bfd_com_section_ptr; + if ((abfd->flags & BFD_PLUGIN) != 0) + { + asection *xc = bfd_get_section_by_name (abfd, "COMMON"); + + if (xc == NULL) + { + flagword flags = (SEC_ALLOC | SEC_IS_COMMON | SEC_KEEP + | SEC_EXCLUDE); + xc = bfd_make_section_with_flags (abfd, "COMMON", flags); + if (xc == NULL) + goto error_return; + } + sym->symbol.section = xc; + } /* Elf puts the alignment into the `value' field, and the size into the `size' field. BFD wants to see the size in the value field, and doesn't care (at the @@ -1336,6 +1305,7 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic) 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) ? */ + sym->symbol.flags |= BSF_ELF_COMMON; /* Fall through. */ case STT_OBJECT: sym->symbol.flags |= BSF_OBJECT; @@ -1472,10 +1442,11 @@ elf_slurp_reloc_table_from_section (bfd *abfd, relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; else if (ELF_R_SYM (rela.r_info) > symcount) { - (*_bfd_error_handler) + _bfd_error_handler + /* xgettext:c-format */ (_("%s(%s): relocation %d has invalid symbol index %ld"), abfd->filename, asect->name, i, ELF_R_SYM (rela.r_info)); - relent->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; + relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; } else { @@ -1537,7 +1508,9 @@ elf_slurp_reloc_table (bfd *abfd, rel_hdr2 = d->rela.hdr; reloc_count2 = rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0; - BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2); + /* PR 17512: file: 0b4f81b7. */ + if (asect->reloc_count != reloc_count + reloc_count2) + return FALSE; BFD_ASSERT ((rel_hdr && asect->rel_filepos == rel_hdr->sh_offset) || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); @@ -1623,37 +1596,40 @@ elf_debug_file (Elf_Internal_Ehdr *ehdrp) #endif /* Create a new BFD as if by bfd_openr. Rather than opening a file, - reconstruct an ELF file by reading the segments out of remote memory - based on the ELF file header at EHDR_VMA and the ELF program headers it - points to. If not null, *LOADBASEP is filled in with the difference - between the VMAs from which the segments were read, and the VMAs the - file headers (and hence BFD's idea of each section's VMA) put them at. - - The function TARGET_READ_MEMORY is called to copy LEN bytes from the - remote memory at target address VMA into the local buffer at MYADDR; it - should return zero on success or an `errno' code on failure. TEMPL must - be a BFD for a target with the word size and byte order found in the - remote memory. */ + reconstruct an ELF file by reading the segments out of remote + memory based on the ELF file header at EHDR_VMA and the ELF program + headers it points to. If non-zero, SIZE is the known extent of the + object. If not null, *LOADBASEP is filled in with the difference + between the VMAs from which the segments were read, and the VMAs + the file headers (and hence BFD's idea of each section's VMA) put + them at. + + The function TARGET_READ_MEMORY is called to copy LEN bytes from + the remote memory at target address VMA into the local buffer at + MYADDR; it should return zero on success or an `errno' code on + failure. TEMPL must be a BFD for a target with the word size and + byte order found in the remote memory. */ bfd * NAME(_bfd_elf,bfd_from_remote_memory) (bfd *templ, bfd_vma ehdr_vma, + bfd_size_type size, bfd_vma *loadbasep, - int (*target_read_memory) (bfd_vma, bfd_byte *, int)) + int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type)) { Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */ Elf_External_Phdr *x_phdrs; - Elf_Internal_Phdr *i_phdrs, *last_phdr; + Elf_Internal_Phdr *i_phdrs, *last_phdr, *first_phdr; bfd *nbfd; struct bfd_in_memory *bim; - int contents_size; bfd_byte *contents; int err; unsigned int i; + bfd_vma high_offset; + bfd_vma shdr_end; 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); @@ -1713,10 +1689,7 @@ NAME(_bfd_elf,bfd_from_remote_memory) 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); - return NULL; - } + return NULL; err = target_read_memory (ehdr_vma + i_ehdr.e_phoff, (bfd_byte *) x_phdrs, i_ehdr.e_phnum * sizeof x_phdrs[0]); if (err) @@ -1728,34 +1701,44 @@ NAME(_bfd_elf,bfd_from_remote_memory) } i_phdrs = (Elf_Internal_Phdr *) &x_phdrs[i_ehdr.e_phnum]; - contents_size = 0; + high_offset = 0; + loadbase = 0; + first_phdr = NULL; 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]); if (i_phdrs[i].p_type == PT_LOAD) { - bfd_vma segment_end; - segment_end = (i_phdrs[i].p_offset + i_phdrs[i].p_filesz - + i_phdrs[i].p_align - 1) & -i_phdrs[i].p_align; - if (segment_end > (bfd_vma) contents_size) - contents_size = segment_end; - - /* 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) + bfd_vma segment_end = i_phdrs[i].p_offset + i_phdrs[i].p_filesz; + + if (segment_end > high_offset) { - loadbase = ehdr_vma - (i_phdrs[i].p_vaddr & -i_phdrs[i].p_align); - loadbase_set = TRUE; + high_offset = segment_end; + last_phdr = &i_phdrs[i]; } - last_phdr = &i_phdrs[i]; + /* If this program header covers offset zero, where the file + header sits, then we can figure out the loadbase. */ + if (first_phdr == NULL) + { + bfd_vma p_offset = i_phdrs[i].p_offset; + bfd_vma p_vaddr = i_phdrs[i].p_vaddr; + + if (i_phdrs[i].p_align > 1) + { + p_offset &= -i_phdrs[i].p_align; + p_vaddr &= -i_phdrs[i].p_align; + } + if (p_offset == 0) + { + loadbase = ehdr_vma - p_vaddr; + first_phdr = &i_phdrs[i]; + } + } } } - if (last_phdr == NULL) + if (high_offset == 0) { /* There were no PT_LOAD segments, so we don't have anything to read. */ free (x_phdrs); @@ -1763,40 +1746,64 @@ NAME(_bfd_elf,bfd_from_remote_memory) return NULL; } - /* Trim the last segment so we don't bother with zeros in the last page - that are off the end of the file. However, if the extra bit in that - page includes the section headers, keep them. */ - if ((bfd_vma) contents_size > last_phdr->p_offset + last_phdr->p_filesz - && (bfd_vma) contents_size >= (i_ehdr.e_shoff - + i_ehdr.e_shnum * i_ehdr.e_shentsize)) + shdr_end = 0; + if (i_ehdr.e_shoff != 0 && i_ehdr.e_shnum != 0 && i_ehdr.e_shentsize != 0) { - contents_size = last_phdr->p_offset + last_phdr->p_filesz; - if ((bfd_vma) contents_size < (i_ehdr.e_shoff - + i_ehdr.e_shnum * i_ehdr.e_shentsize)) - contents_size = i_ehdr.e_shoff + i_ehdr.e_shnum * i_ehdr.e_shentsize; + shdr_end = i_ehdr.e_shoff + i_ehdr.e_shnum * i_ehdr.e_shentsize; + + if (last_phdr->p_filesz != last_phdr->p_memsz) + { + /* If the last PT_LOAD header has a bss area then ld.so will + have cleared anything past p_filesz, zapping the section + headers. */ + } + else if (size >= shdr_end) + high_offset = size; + else + { + bfd_vma page_size = get_elf_backend_data (templ)->minpagesize; + bfd_vma segment_end = last_phdr->p_offset + last_phdr->p_filesz; + + /* Assume we loaded full pages, allowing us to sometimes see + section headers. */ + if (page_size > 1 && shdr_end > segment_end) + { + bfd_vma page_end = (segment_end + page_size - 1) & -page_size; + + if (page_end >= shdr_end) + /* Whee, section headers covered. */ + high_offset = shdr_end; + } + } } - else - 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_byte *) bfd_zmalloc (contents_size); + contents = (bfd_byte *) bfd_zmalloc (high_offset); if (contents == NULL) { free (x_phdrs); - bfd_set_error (bfd_error_no_memory); return NULL; } for (i = 0; i < i_ehdr.e_phnum; ++i) 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 - + i_phdrs[i].p_align - 1) & -i_phdrs[i].p_align; - if (end > (bfd_vma) contents_size) - end = contents_size; - err = target_read_memory ((loadbase + i_phdrs[i].p_vaddr) - & -i_phdrs[i].p_align, + bfd_vma start = i_phdrs[i].p_offset; + bfd_vma end = start + i_phdrs[i].p_filesz; + bfd_vma vaddr = i_phdrs[i].p_vaddr; + + /* Extend the beginning of the first pt_load to cover file + header and program headers, if we proved earlier that its + aligned offset is 0. */ + if (first_phdr == &i_phdrs[i]) + { + vaddr -= start; + start = 0; + } + /* Extend the end of the last pt_load to cover section headers. */ + if (last_phdr == &i_phdrs[i]) + end = high_offset; + err = target_read_memory (loadbase + vaddr, contents + start, end - start); if (err) { @@ -1811,8 +1818,7 @@ NAME(_bfd_elf,bfd_from_remote_memory) /* If the segments visible in memory didn't include the section headers, then clear them from the file header. */ - if ((bfd_vma) contents_size < (i_ehdr.e_shoff - + i_ehdr.e_shnum * i_ehdr.e_shentsize)) + if (high_offset < shdr_end) { memset (&x_ehdr.e_shoff, 0, sizeof x_ehdr.e_shoff); memset (&x_ehdr.e_shnum, 0, sizeof x_ehdr.e_shnum); @@ -1828,7 +1834,6 @@ NAME(_bfd_elf,bfd_from_remote_memory) if (bim == NULL) { free (contents); - bfd_set_error (bfd_error_no_memory); return NULL; } nbfd = _bfd_new_bfd (); @@ -1836,12 +1841,11 @@ NAME(_bfd_elf,bfd_from_remote_memory) { free (bim); free (contents); - bfd_set_error (bfd_error_no_memory); return NULL; } - nbfd->filename = ""; + nbfd->filename = xstrdup (""); nbfd->xvec = templ->xvec; - bim->size = contents_size; + bim->size = high_offset; bim->buffer = contents; nbfd->iostream = bim; nbfd->flags = BFD_IN_MEMORY; @@ -1855,6 +1859,22 @@ NAME(_bfd_elf,bfd_from_remote_memory) *loadbasep = loadbase; return nbfd; } + +/* Function for ELF_R_INFO. */ + +bfd_vma +NAME(elf,r_info) (bfd_vma sym, bfd_vma type) +{ + return ELF_R_INFO (sym, type); +} + +/* Function for ELF_R_SYM. */ + +bfd_vma +NAME(elf,r_sym) (bfd_vma r_info) +{ + return ELF_R_SYM (r_info); +} #include "elfcore.h"