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authorNathan Sidwell <nathan@codesourcery.com>2006-12-19 08:49:38 +0000
committerNathan Sidwell <nathan@codesourcery.com>2006-12-19 08:49:38 +0000
commit3271a81418b2396c04dc040163a579cddcd23e2e (patch)
treefdf3023b1cd22b459db1f2dc0308fb3c3e2a7600 /bfd/elf.c
parentf6fe8b45149d111b23f3434c3d67dfa80e273cbe (diff)
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* elf.c (assign_file_positions_for_load_sections): Adjust p_vaddr by p_vaddr_offset. Copy alignment & use if it is valid. (rewrite_elf_program_headers): Cope with leading padding in a segment that does not contain file or program headers. (copy_elf_program_header): Likewise. include/elf/ * internal.h (struct elf_segment_map): Add p_vaddr_offset field.
Diffstat (limited to 'bfd/elf.c')
-rw-r--r--bfd/elf.c50
1 files changed, 37 insertions, 13 deletions
diff --git a/bfd/elf.c b/bfd/elf.c
index 943db78..c8fcbb5 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -4326,7 +4326,7 @@ assign_file_positions_for_load_sections (bfd *abfd,
if (m->count == 0)
p->p_vaddr = 0;
else
- p->p_vaddr = m->sections[0]->vma;
+ p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset;
if (m->p_paddr_valid)
p->p_paddr = m->p_paddr;
@@ -4353,6 +4353,8 @@ assign_file_positions_for_load_sections (bfd *abfd,
}
else if (m->count == 0)
p->p_align = 1 << bed->s->log_file_align;
+ else if (m->p_align_valid)
+ p->p_align = m->p_align;
else
p->p_align = 0;
@@ -4363,18 +4365,22 @@ assign_file_positions_for_load_sections (bfd *abfd,
bfd_vma adjust;
unsigned int align_power = 0;
- for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
+ if (m->p_align_valid)
+ align = p->p_align;
+ else
{
- unsigned int secalign;
-
- secalign = bfd_get_section_alignment (abfd, *secpp);
- if (secalign > align_power)
- align_power = secalign;
+ for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
+ {
+ unsigned int secalign;
+
+ secalign = bfd_get_section_alignment (abfd, *secpp);
+ if (secalign > align_power)
+ align_power = secalign;
+ }
+ align = (bfd_size_type) 1 << align_power;
+ if (align < maxpagesize)
+ align = maxpagesize;
}
- align = (bfd_size_type) 1 << align_power;
-
- if (align < maxpagesize)
- align = maxpagesize;
adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align);
off += adjust;
@@ -4605,6 +4611,7 @@ assign_file_positions_for_load_sections (bfd *abfd,
if (p->p_type == PT_GNU_RELRO)
p->p_align = 1;
else if (align > p->p_align
+ && !m->p_align_valid
&& (p->p_type != PT_LOAD
|| (abfd->flags & D_PAGED) == 0))
p->p_align = align;
@@ -5581,7 +5588,14 @@ rewrite_elf_program_header (bfd *ibfd, bfd *obfd)
map->count = section_count;
*pointer_to_map = map;
pointer_to_map = &map->next;
-
+
+ if (matching_lma != map->p_paddr
+ && !map->includes_filehdr && !map->includes_phdrs)
+ /* There is some padding before the first section in the
+ segment. So, we must account for that in the output
+ segment's vma. */
+ map->p_vaddr_offset = matching_lma - map->p_paddr;
+
free (sections);
continue;
}
@@ -5800,6 +5814,7 @@ copy_elf_program_header (bfd *ibfd, bfd *obfd)
unsigned int section_count;
bfd_size_type amt;
Elf_Internal_Shdr *this_hdr;
+ bfd_vma first_lma = 0;
/* FIXME: Do we need to copy PT_NULL segment? */
if (segment->p_type == PT_NULL)
@@ -5812,7 +5827,11 @@ copy_elf_program_header (bfd *ibfd, bfd *obfd)
{
this_hdr = &(elf_section_data(section)->this_hdr);
if (ELF_IS_SECTION_IN_SEGMENT_FILE (this_hdr, segment))
- section_count++;
+ {
+ if (!section_count || section->lma < first_lma)
+ first_lma = section->lma;
+ section_count++;
+ }
}
/* Allocate a segment map big enough to contain
@@ -5834,6 +5853,7 @@ copy_elf_program_header (bfd *ibfd, bfd *obfd)
map->p_paddr_valid = 1;
map->p_align = segment->p_align;
map->p_align_valid = 1;
+ map->p_vaddr_offset = 0;
/* Determine if this segment contains the ELF file header
and if it contains the program headers themselves. */
@@ -5853,6 +5873,10 @@ copy_elf_program_header (bfd *ibfd, bfd *obfd)
phdr_included = TRUE;
}
+ if (!map->includes_phdrs && !map->includes_filehdr)
+ /* There is some other padding before the first section. */
+ map->p_vaddr_offset = first_lma - segment->p_paddr;
+
if (section_count != 0)
{
unsigned int isec = 0;