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Move some symfile code into subroutines.
	* symfile.h (relative_addr_info_to_section_offsets)
	(addr_info_make_relative): New prototypes.
	* symfile.c (default_symfile_offsets): Move a part to ...
	(relative_addr_info_to_section_offsets): ... this new function.
	(default_symfile_offsets): Call it.
	(syms_from_objfile <!mainline && addrs && addrs->other[0].name>): Move
	this part to ...
	(addr_info_make_relative): ... this new function.
This commit is contained in:
Jan Kratochvil 2010-01-08 22:55:15 +00:00
parent 268a4a75bd
commit 75242ef48d
3 changed files with 111 additions and 78 deletions
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12
gdb/ChangeLog
View File

@ -1,3 +1,15 @@
2010-01-08 Jan Kratochvil <jan.kratochvil@redhat.com>
Move some symfile code into subroutines.
* symfile.h (relative_addr_info_to_section_offsets)
(addr_info_make_relative): New prototypes.
* symfile.c (default_symfile_offsets): Move a part to ...
(relative_addr_info_to_section_offsets): ... this new function.
(default_symfile_offsets): Call it.
(syms_from_objfile <!mainline && addrs && addrs->other[0].name>): Move
this part to ...
(addr_info_make_relative): ... this new function.
2010-01-08 Jan Kratochvil <jan.kratochvil@redhat.com>
Add from_tty to solib_create_inferior_hook.

170
gdb/symfile.c
View File

@ -555,6 +555,95 @@ place_section (bfd *abfd, asection *sect, void *obj)
arg->lowest = start_addr + bfd_get_section_size (sect);
}
/* Store struct section_addr_info as prepared (made relative and with SECTINDEX
filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS
entries. */
void
relative_addr_info_to_section_offsets (struct section_offsets *section_offsets,
int num_sections,
struct section_addr_info *addrs)
{
int i;
memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections));
/* Now calculate offsets for section that were specified by the caller. */
for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
{
struct other_sections *osp;
osp = &addrs->other[i];
if (osp->addr == 0)
continue;
/* Record all sections in offsets */
/* The section_offsets in the objfile are here filled in using
the BFD index. */
section_offsets->offsets[osp->sectindex] = osp->addr;
}
}
/* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in
also SECTINDEXes there. */
void
addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd)
{
asection *lower_sect;
asection *sect;
CORE_ADDR lower_offset;
int i;
/* Find lowest loadable section to be used as starting point for
continguous sections. FIXME!! won't work without call to find
.text first, but this assumes text is lowest section. */
lower_sect = bfd_get_section_by_name (abfd, ".text");
if (lower_sect == NULL)
bfd_map_over_sections (abfd, find_lowest_section, &lower_sect);
if (lower_sect == NULL)
{
warning (_("no loadable sections found in added symbol-file %s"),
bfd_get_filename (abfd));
lower_offset = 0;
}
else
lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect);
/* Calculate offsets for the loadable sections.
FIXME! Sections must be in order of increasing loadable section
so that contiguous sections can use the lower-offset!!!
Adjust offsets if the segments are not contiguous.
If the section is contiguous, its offset should be set to
the offset of the highest loadable section lower than it
(the loadable section directly below it in memory).
this_offset = lower_offset = lower_addr - lower_orig_addr */
for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
{
if (addrs->other[i].addr != 0)
{
sect = bfd_get_section_by_name (abfd, addrs->other[i].name);
if (sect)
{
addrs->other[i].addr -= bfd_section_vma (abfd, sect);
lower_offset = addrs->other[i].addr;
/* This is the index used by BFD. */
addrs->other[i].sectindex = sect->index;
}
else
{
warning (_("section %s not found in %s"), addrs->other[i].name,
bfd_get_filename (abfd));
addrs->other[i].addr = 0;
}
}
else
addrs->other[i].addr = lower_offset;
}
}
/* Parse the user's idea of an offset for dynamic linking, into our idea
of how to represent it for fast symbol reading. This is the default
version of the sym_fns.sym_offsets function for symbol readers that
@ -565,30 +654,12 @@ void
default_symfile_offsets (struct objfile *objfile,
struct section_addr_info *addrs)
{
int i;
objfile->num_sections = bfd_count_sections (objfile->obfd);
objfile->section_offsets = (struct section_offsets *)
obstack_alloc (&objfile->objfile_obstack,
SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
memset (objfile->section_offsets, 0,
SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
/* Now calculate offsets for section that were specified by the
caller. */
for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
{
struct other_sections *osp ;
osp = &addrs->other[i] ;
if (osp->addr == 0)
continue;
/* Record all sections in offsets */
/* The section_offsets in the objfile are here filled in using
the BFD index. */
(objfile->section_offsets)->offsets[osp->sectindex] = osp->addr;
}
relative_addr_info_to_section_offsets (objfile->section_offsets,
objfile->num_sections, addrs);
/* For relocatable files, all loadable sections will start at zero.
The zero is meaningless, so try to pick arbitrary addresses such
@ -823,64 +894,7 @@ syms_from_objfile (struct objfile *objfile,
We no longer warn if the lowest section is not a text segment (as
happens for the PA64 port. */
if (addrs && addrs->other[0].name)
{
asection *lower_sect;
asection *sect;
CORE_ADDR lower_offset;
int i;
/* Find lowest loadable section to be used as starting point for
continguous sections. FIXME!! won't work without call to find
.text first, but this assumes text is lowest section. */
lower_sect = bfd_get_section_by_name (objfile->obfd, ".text");
if (lower_sect == NULL)
bfd_map_over_sections (objfile->obfd, find_lowest_section,
&lower_sect);
if (lower_sect == NULL)
{
warning (_("no loadable sections found in added symbol-file %s"),
objfile->name);
lower_offset = 0;
}
else
lower_offset = bfd_section_vma (objfile->obfd, lower_sect);
/* Calculate offsets for the loadable sections.
FIXME! Sections must be in order of increasing loadable section
so that contiguous sections can use the lower-offset!!!
Adjust offsets if the segments are not contiguous.
If the section is contiguous, its offset should be set to
the offset of the highest loadable section lower than it
(the loadable section directly below it in memory).
this_offset = lower_offset = lower_addr - lower_orig_addr */
for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
{
if (addrs->other[i].addr != 0)
{
sect = bfd_get_section_by_name (objfile->obfd,
addrs->other[i].name);
if (sect)
{
addrs->other[i].addr
-= bfd_section_vma (objfile->obfd, sect);
lower_offset = addrs->other[i].addr;
/* This is the index used by BFD. */
addrs->other[i].sectindex = sect->index ;
}
else
{
warning (_("section %s not found in %s"),
addrs->other[i].name,
objfile->name);
addrs->other[i].addr = 0;
}
}
else
addrs->other[i].addr = lower_offset;
}
}
addr_info_make_relative (addrs, objfile->obfd);
/* Initialize symbol reading routines for this objfile, allow complaints to
appear for this new file, and record how verbose to be, then do the

7
gdb/symfile.h
View File

@ -174,6 +174,13 @@ struct sym_fns
};
extern void relative_addr_info_to_section_offsets
(struct section_offsets *section_offsets, int num_sections,
struct section_addr_info *addrs);
extern void addr_info_make_relative (struct section_addr_info *addrs,
bfd *abfd);
/* The default version of sym_fns.sym_offsets for readers that don't
do anything special. */