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* elfread.c (elf_symfile_read): Don't call

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dwarf2_build_frame_info.
	* dwarf2read.c (struct dwarf2_section_info) <readin>: New field.
	(struct dwarf2_per_objfile) <objfile>: New field.
	(dwarf2_has_info): Now idempotent.  Set objfile field.
	(dwarf2_read_section): Check and set readin field.  Call
	posix_madvise.
	(dwarf2_build_psymtabs): Don't read all sections.
	(read_type_comp_unit_head): Read types section.
	(create_debug_types_hash_table): Likewise.
	(init_cu_die_reader): Add asserts.
	(process_type_comp_unit): Add assert.
	(dwarf2_build_psymtabs_hard): Read info section.
	(load_partial_comp_unit): Add assert.
	(create_all_comp_units): Read info section.
	(load_full_comp_unit): Likewise.
	(dwarf2_ranges_read): Read ranges section.
	(dwarf2_record_block_ranges): Add assert.
	(dwarf2_read_abbrevs): Read abbrev section.
	(read_indirect_string): Read str section.
	(dwarf_decode_line_header): Read line section.
	(read_signatured_type_at_offset): Read types section.
	(dwarf_decode_macros): Read macinfo section.
	(dwarf2_symbol_mark_computed): Read loc section.
	* dwarf2-frame.c (dwarf2_frame_find_fde): Call
	dwarf2_build_frame_info.
	(dwarf2_build_frame_info): Unconditionally set
	dwarf2_frame_objfile_data on the objfile.
	* configure.ac: Check for posix_madvise.
	* config.in, configure: Rebuild.
This commit is contained in:
Tom Tromey
2010-03-10 18:37:24 +00:00
parent e38df1d074
commit be391dcafc
7 changed files with 119 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
gdb/dwarf2-frame.c
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@ -1584,6 +1584,13 @@ dwarf2_frame_find_fde (CORE_ADDR *pc)
fde_table = objfile_data (objfile, dwarf2_frame_objfile_data);
if (fde_table == NULL)
{
dwarf2_build_frame_info (objfile);
fde_table = objfile_data (objfile, dwarf2_frame_objfile_data);
}
gdb_assert (fde_table != NULL);
if (fde_table->num_entries == 0)
continue;
gdb_assert (objfile->section_offsets);
@ -2027,6 +2034,7 @@ dwarf2_build_frame_info (struct objfile *objfile)
gdb_byte *frame_ptr;
struct dwarf2_cie_table cie_table;
struct dwarf2_fde_table fde_table;
struct dwarf2_fde_table *fde_table2;
cie_table.num_entries = 0;
cie_table.entries = NULL;
@ -2098,9 +2106,17 @@ dwarf2_build_frame_info (struct objfile *objfile)
cie_table.num_entries = 0; /* Paranoia. */
}
if (fde_table.num_entries != 0)
/* Copy fde_table to obstack: it is needed at runtime. */
fde_table2 = (struct dwarf2_fde_table *)
obstack_alloc (&objfile->objfile_obstack, sizeof (*fde_table2));
if (fde_table.num_entries == 0)
{
fde_table2->entries = NULL;
fde_table2->num_entries = 0;
}
else
{
struct dwarf2_fde_table *fde_table2;
struct dwarf2_fde *fde_prev = NULL;
struct dwarf2_fde *first_non_zero_fde = NULL;
int i;
@ -2109,11 +2125,6 @@ dwarf2_build_frame_info (struct objfile *objfile)
qsort (fde_table.entries, fde_table.num_entries,
sizeof (fde_table.entries[0]), qsort_fde_cmp);
/* Copy fde_table to obstack: it is needed at runtime. */
fde_table2 = (struct dwarf2_fde_table *)
obstack_alloc (&objfile->objfile_obstack, sizeof (*fde_table2));
fde_table2->num_entries = 0;
/* Check for leftovers from --gc-sections. The GNU linker sets
the relevant symbols to zero, but doesn't zero the FDE *end*
ranges because there's no relocation there. It's (offset,
@ -2140,6 +2151,7 @@ dwarf2_build_frame_info (struct objfile *objfile)
/* Since we'll be doing bsearch, squeeze out identical (except
for eh_frame_p) fde entries so bsearch result is predictable.
Also discard leftovers from --gc-sections. */
fde_table2->num_entries = 0;
for (i = 0; i < fde_table.num_entries; i++)
{
struct dwarf2_fde *fde = fde_table.entries[i];
@ -2160,11 +2172,12 @@ dwarf2_build_frame_info (struct objfile *objfile)
fde_prev = fde;
}
fde_table2->entries = obstack_finish (&objfile->objfile_obstack);
set_objfile_data (objfile, dwarf2_frame_objfile_data, fde_table2);
/* Discard the original fde_table. */
xfree (fde_table.entries);
}
set_objfile_data (objfile, dwarf2_frame_objfile_data, fde_table2);
}
/* Provide a prototype to silence -Wmissing-prototypes. */