gdb/gdb-6.6-bfd-vdso8k.patch
Jan Kratochvil dd40115f74 - Fixed the kernel VDSO loading (`warning: no loadable sections found in
...').
- Fix the testcase for pending signals (from BZ 233852).
2007-09-23 15:42:37 +00:00

81 lines
3.1 KiB
Diff

2007-09-23 Jan Kratochvil <jan.kratochvil@redhat.com>
* elfcode.h (NAME(_bfd_elf,bfd_from_remote_memory)): New variables
X_SHDR_SHSTRTAB and I_SHDR_SHSTRTAB. Fixed the CONTENTS_SIZE trimming
check for its aligned size between the last segment and still before
the section header end. Added variables check to cover also the
section header string table.
--- ./bfd/elfcode.h 14 Aug 2007 08:04:47 -0000 1.86
+++ ./bfd/elfcode.h 23 Sep 2007 14:24:39 -0000
@@ -1628,6 +1628,8 @@ NAME(_bfd_elf,bfd_from_remote_memory)
Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */
Elf_External_Phdr *x_phdrs;
Elf_Internal_Phdr *i_phdrs, *last_phdr;
+ Elf_External_Shdr *x_shdr_shstrtab;
+ Elf_Internal_Shdr *i_shdr_shstrtab;
bfd *nbfd;
struct bfd_in_memory *bim;
int contents_size;
@@ -1746,19 +1748,49 @@ NAME(_bfd_elf,bfd_from_remote_memory)
/* 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))
- {
- 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;
- }
- else
+ page includes the section headers os the section header string table,
+ keep them. */
+ if ((bfd_vma) contents_size > last_phdr->p_offset + last_phdr->p_filesz)
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;
+
+ /* Section header string table is usually before the section headers
+ so this check is here has usually no effect. */
+ if (i_ehdr.e_shstrndx < i_ehdr.e_shnum)
+ {
+ x_shdr_shstrtab = bfd_malloc (sizeof *x_shdr_shstrtab
+ + sizeof *i_shdr_shstrtab);
+ if (x_shdr_shstrtab == NULL)
+ {
+ free (x_phdrs);
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ err = target_read_memory (ehdr_vma + i_ehdr.e_shoff
+ + i_ehdr.e_shstrndx * sizeof *x_shdr_shstrtab,
+ (bfd_byte *) x_shdr_shstrtab,
+ sizeof *x_shdr_shstrtab);
+ if (err)
+ {
+ free (x_shdr_shstrtab);
+ free (x_phdrs);
+ bfd_set_error (bfd_error_system_call);
+ errno = err;
+ return NULL;
+ }
+ i_shdr_shstrtab = (Elf_Internal_Shdr *) &x_shdr_shstrtab[1];
+ elf_swap_shdr_in (templ, x_shdr_shstrtab, i_shdr_shstrtab);
+
+ if ((bfd_vma) contents_size < i_shdr_shstrtab->sh_offset
+ + i_shdr_shstrtab->sh_size)
+ contents_size = i_shdr_shstrtab->sh_offset + i_shdr_shstrtab->sh_size;
+
+ free (x_shdr_shstrtab);
+ }
+
/* Now we know the size of the whole image we want read in. */
contents = bfd_zmalloc (contents_size);
if (contents == NULL)