* readelf.c (get_segment_type): Handle PT_GNU_STACK.
bfd/
* elf.c (_bfd_elf_print_private_bfd_data): Handle PT_GNU_STACK.
(bfd_section_from_phdr): Likewise.
(map_sections_to_segments): Create PT_GNU_STACK segment header.
(get_program_header_size): Count with PT_GNU_STACK.
* elf-bfd.h (struct elf_obj_tdata): Add stack_flags.
* elflink.h (bfd_elfNN_size_dynamic_sections): Set stack_flags.
include/
* bfdlink.h (struct bfd_link_info): Add execstack and noexecstack.
* elf/common.h (PT_GNU_STACK): Define.
ld/
* ldgram.y (phdr_type): Grok PT_GNU_STACK.
* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Add
-z execstack and -z noexecstack.
(gld${EMULATION_NAME}_list_options): Likewise.
* scripttempl/elf.sc: If not -r, discard .note.GNU-stack section.
+2003-06-03 Jakub Jelinek <jakub@redhat.com>
+
+ * elf.c (_bfd_elf_print_private_bfd_data): Handle PT_GNU_STACK.
+ (bfd_section_from_phdr): Likewise.
+ (map_sections_to_segments): Create PT_GNU_STACK segment header.
+ (get_program_header_size): Count with PT_GNU_STACK.
+ * elf-bfd.h (struct elf_obj_tdata): Add stack_flags.
+ * elflink.h (bfd_elfNN_size_dynamic_sections): Set stack_flags.
+
2003-06-03 H.J. Lu <hongjiu.lu@intel.com>
* elflink.h (elf_link_input_bfd): Call linker error_handler
/* Number of symbol version references we are about to emit. */
unsigned int cverrefs;
+ /* Segment flags for the PT_GNU_STACK segment. */
+ unsigned int stack_flags;
+
/* Symbol version definitions in external objects. */
Elf_Internal_Verdef *verdef;
case PT_PHDR: pt = "PHDR"; break;
case PT_TLS: pt = "TLS"; break;
case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
+ case PT_GNU_STACK: pt = "STACK"; break;
default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
}
fprintf (f, "%8s off 0x", pt);
return _bfd_elf_make_section_from_phdr (abfd, hdr, index,
"eh_frame_hdr");
+ case PT_GNU_STACK:
+ return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack");
+
default:
/* Check for any processor-specific program segment types.
If no handler for them, default to making "segment" sections. */
pm = &m->next;
}
+ if (elf_tdata (abfd)->stack_flags)
+ {
+ amt = sizeof (struct elf_segment_map);
+ m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
+ if (m == NULL)
+ goto error_return;
+ m->next = NULL;
+ m->p_type = PT_GNU_STACK;
+ m->p_flags = elf_tdata (abfd)->stack_flags;
+ m->p_flags_valid = 1;
+
+ *pm = m;
+ pm = &m->next;
+ }
+
free (sections);
sections = NULL;
++segs;
}
+ if (elf_tdata (abfd)->stack_flags)
+ {
+ /* We need a PT_GNU_STACK segment. */
+ ++segs;
+ }
+
for (s = abfd->sections; s != NULL; s = s->next)
{
if ((s->flags & SEC_LOAD) != 0
if (! is_elf_hash_table (info))
return TRUE;
+ if (info->execstack)
+ elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
+ else if (info->noexecstack)
+ elf_tdata (output_bfd)->stack_flags = PF_R | PF_W;
+ else
+ {
+ bfd *inputobj;
+ asection *notesec = NULL;
+ int exec = 0;
+
+ for (inputobj = info->input_bfds;
+ inputobj;
+ inputobj = inputobj->link_next)
+ {
+ asection *s;
+
+ if (inputobj->flags & DYNAMIC)
+ continue;
+ s = bfd_get_section_by_name (inputobj, ".note.GNU-stack");
+ if (s)
+ {
+ if (s->flags & SEC_CODE)
+ exec = PF_X;
+ notesec = s;
+ }
+ else
+ exec = PF_X;
+ }
+ if (notesec)
+ {
+ elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | exec;
+ if (exec && info->relocateable
+ && notesec->output_section != bfd_abs_section_ptr)
+ notesec->output_section->flags |= SEC_CODE;
+ }
+ }
+
/* Any syms created from now on start with -1 in
got.refcount/offset and plt.refcount/offset. */
elf_hash_table (info)->init_refcount = elf_hash_table (info)->init_offset;
+2003-05-23 Jakub Jelinek <jakub@redhat.com>
+
+ * bfdlink.h (struct bfd_link_info): Add execstack and noexecstack.
+ * elf/common.h (PT_GNU_STACK): Define.
+
2003-06-03 H.J. Lu <hongjiu.lu@intel.com>
* bfdlink.h (LD_DEFINITION_IN_DISCARDED_SECTION): New.
/* TRUE if generating an executable, position independent or not. */
unsigned int executable : 1;
+ /* TRUE if PT_GNU_STACK segment should be created with PF_R|PF_W|PF_X
+ flags. */
+ unsigned int execstack: 1;
+
+ /* TRUE if PT_GNU_STACK segment should be created with PF_R|PF_W
+ flags. */
+ unsigned int noexecstack: 1;
+
/* Which symbols to strip. */
enum bfd_link_strip strip;
#define PT_HIPROC 0x7FFFFFFF /* Processor-specific */
#define PT_GNU_EH_FRAME (PT_LOOS + 0x474e550)
+#define PT_GNU_STACK (PT_LOOS + 0x474e551)
/* Program segment permissions, in program header p_flags field. */