Fix to use a single disposable copy of section header table and program
header table entries.
This commit is contained in:
Fred Fish
parent
bf349b77fa
commit
d4acec2c22
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@ -1,3 +1,9 @@
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Sat Mar 28 13:07:02 1992 Fred Fish (fnf@cygnus.com)
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* elf.c (elf_object_p, elf_core_file_p): Fix to use only a single
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local, disposable, copy of the external form of section header
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table and program header table entries.
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Thu Mar 26 16:59:58 1992 John Gilmore (gnu at cygnus.com)
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* Makefile.in: Set MINIMIZE back to 0 for a real release.
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75
bfd/elf.c
75
bfd/elf.c
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@ -223,6 +223,7 @@ DEFUN(bfd_section_from_shdr, (abfd, hdr, shstrtab),
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name = hdr -> sh_name ? shstrtab + hdr -> sh_name : "unnamed";
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newsect = bfd_make_section (abfd, name);
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if (!newsect) return false;
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newsect -> vma = hdr -> sh_addr;
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newsect -> _raw_size = hdr -> sh_size;
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if (!(hdr -> sh_type == SHT_NOBITS))
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@ -551,7 +552,7 @@ DEFUN(elf_corefile_note, (abfd, hdr),
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asection *newsect;
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if (hdr -> p_filesz > 0
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&& (buf = (char *)malloc(hdr -> p_filesz)) != NULL
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&& (buf = (char *) bfd_xmalloc (hdr -> p_filesz)) != NULL
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&& bfd_seek (abfd, hdr -> p_offset, SEEK_SET) != -1L
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&& bfd_read ((PTR) buf, hdr -> p_filesz, 1, abfd) == hdr -> p_filesz)
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{
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@ -648,8 +649,8 @@ DEFUN (elf_object_p, (abfd), bfd *abfd)
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{
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Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
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Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */
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Elf_External_Shdr *x_shdr; /* Section header table, external form */
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Elf_Internal_Shdr *i_shdr; /* Section header table, internal form */
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Elf_External_Shdr x_shdr; /* Section header table entry, external form */
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Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
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int shindex;
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char *shstrtab; /* Internal copy of section header stringtab */
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int shstrtabsize; /* Size of section header string table */
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@ -695,10 +696,12 @@ wrong:
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/* Switch xvec to match the specified byte order. */
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switch (x_ehdr.e_ident[EI_DATA]) {
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case ELFDATA2MSB: /* Big-endian */
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abfd->xvec = &elf_big_vec;
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if (!abfd->xvec->header_byteorder_big_p)
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goto wrong;
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break;
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case ELFDATA2LSB: /* Little-endian */
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abfd->xvec = &elf_little_vec;
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if (abfd->xvec->header_byteorder_big_p)
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goto wrong;
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break;
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case ELFDATANONE: /* No data encoding specified */
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default: /* Unknown data encoding specified */
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@ -734,16 +737,10 @@ wrong:
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check, verify that the what BFD thinks is the size of each section
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header table entry actually matches the size recorded in the file. */
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if (i_ehdr.e_shentsize != sizeof (*x_shdr))
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if (i_ehdr.e_shentsize != sizeof (x_shdr))
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goto wrong;
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if ((x_shdr = (Elf_External_Shdr *)
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bfd_alloc (abfd, sizeof (*x_shdr) * i_ehdr.e_shnum)) == NULL)
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{
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bfd_error = no_memory;
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return (NULL);
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}
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if ((i_shdr = (Elf_Internal_Shdr *)
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bfd_alloc (abfd, sizeof (*i_shdr) * i_ehdr.e_shnum)) == NULL)
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if ((i_shdrp = (Elf_Internal_Shdr *)
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bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdr.e_shnum)) == NULL)
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{
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bfd_error = no_memory;
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return (NULL);
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@ -755,20 +752,20 @@ wrong:
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}
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for (shindex = 0; shindex < i_ehdr.e_shnum; shindex++)
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{
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if (bfd_read ((PTR) (x_shdr + shindex), sizeof (*x_shdr), 1, abfd)
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!= sizeof (*x_shdr))
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if (bfd_read ((PTR) &x_shdr, sizeof (x_shdr), 1, abfd)
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!= sizeof (x_shdr))
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{
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bfd_error = system_call_error;
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return (NULL);
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}
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elf_swap_shdr_in (abfd, x_shdr + shindex, i_shdr + shindex);
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elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
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}
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/* Read in the string table containing the names of the sections. We
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will need the base pointer to this table later. */
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shstrtabsize = i_shdr[i_ehdr.e_shstrndx].sh_size;
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offset = i_shdr[i_ehdr.e_shstrndx].sh_offset;
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shstrtabsize = i_shdrp[i_ehdr.e_shstrndx].sh_size;
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offset = i_shdrp[i_ehdr.e_shstrndx].sh_offset;
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if ((shstrtab = elf_read (abfd, offset, shstrtabsize)) == NULL)
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{
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return (NULL);
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@ -784,14 +781,14 @@ wrong:
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for (shindex = 1; shindex < i_ehdr.e_shnum; shindex++)
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{
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Elf_Internal_Shdr *hdr = i_shdr + shindex;
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Elf_Internal_Shdr *hdr = i_shdrp + shindex;
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bfd_section_from_shdr (abfd, hdr, shstrtab);
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if (hdr -> sh_type == SHT_SYMTAB)
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{
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elf_symtab_filepos(abfd) = hdr -> sh_offset;
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elf_symtab_filesz(abfd) = hdr -> sh_size;
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elf_strtab_filepos(abfd) = (i_shdr + hdr -> sh_link) -> sh_offset;
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elf_strtab_filesz(abfd) = (i_shdr + hdr -> sh_link) -> sh_size;
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elf_symtab_filepos (abfd) = hdr -> sh_offset;
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elf_symtab_filesz (abfd) = hdr -> sh_size;
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elf_strtab_filepos (abfd) = (i_shdrp + hdr -> sh_link) -> sh_offset;
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elf_strtab_filesz (abfd) = (i_shdrp + hdr -> sh_link) -> sh_size;
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}
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}
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@ -820,8 +817,8 @@ DEFUN (elf_core_file_p, (abfd), bfd *abfd)
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{
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Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
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Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */
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Elf_External_Phdr *x_phdr; /* Program header table, external form */
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Elf_Internal_Phdr *i_phdr; /* Program header table, internal form */
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Elf_External_Phdr x_phdr; /* Program header table entry, external form */
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Elf_Internal_Phdr *i_phdrp; /* Program header table, internal form */
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int phindex;
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/* Read in the ELF header in external format. */
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@ -899,16 +896,10 @@ wrong:
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check, verify that the what BFD thinks is the size of each program
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header table entry actually matches the size recorded in the file. */
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if (i_ehdr.e_phentsize != sizeof (*x_phdr))
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if (i_ehdr.e_phentsize != sizeof (x_phdr))
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goto wrong;
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if ((x_phdr = (Elf_External_Phdr *)
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bfd_alloc (abfd, sizeof (*x_phdr) * i_ehdr.e_phnum)) == NULL)
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{
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bfd_error = no_memory;
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return (NULL);
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}
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if ((i_phdr = (Elf_Internal_Phdr *)
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bfd_alloc (abfd, sizeof (*i_phdr) * i_ehdr.e_phnum)) == NULL)
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if ((i_phdrp = (Elf_Internal_Phdr *)
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bfd_alloc (abfd, sizeof (*i_phdrp) * i_ehdr.e_phnum)) == NULL)
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{
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bfd_error = no_memory;
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return (NULL);
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@ -920,13 +911,13 @@ wrong:
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}
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for (phindex = 0; phindex < i_ehdr.e_phnum; phindex++)
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{
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if (bfd_read ((PTR) (x_phdr + phindex), sizeof (*x_phdr), 1, abfd)
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!= sizeof (*x_phdr))
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if (bfd_read ((PTR) &x_phdr, sizeof (x_phdr), 1, abfd)
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!= sizeof (x_phdr))
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{
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bfd_error = system_call_error;
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return (NULL);
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}
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elf_swap_phdr_in (abfd, x_phdr + phindex, i_phdr + phindex);
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elf_swap_phdr_in (abfd, &x_phdr, i_phdrp + phindex);
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}
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/* Once all of the program headers have been read and converted, we
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@ -934,10 +925,10 @@ wrong:
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for (phindex = 0; phindex < i_ehdr.e_phnum; phindex++)
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{
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bfd_section_from_phdr (abfd, i_phdr + phindex, phindex);
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if ((i_phdr + phindex) -> p_type == PT_NOTE)
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bfd_section_from_phdr (abfd, i_phdrp + phindex, phindex);
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if ((i_phdrp + phindex) -> p_type == PT_NOTE)
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{
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elf_corefile_note (abfd, i_phdr + phindex);
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elf_corefile_note (abfd, i_phdrp + phindex);
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}
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}
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@ -1054,7 +1045,7 @@ DEFUN (elf_slurp_symbol_table, (abfd), bfd *abfd)
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}
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else if (i_sym.st_shndx == SHN_ABS)
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{
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/* sym -> flags |= BSF_ABSOLUTE; OBSOLETE */
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sym -> section = &bfd_abs_section;
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}
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else if (i_sym.st_shndx == SHN_COMMON)
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{
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