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* dwarf.c (loc_offsets): New variable.

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(loc_offsets_compar): New routine.
	(display_debug_loc): Handle loc_offsets not being in ascending order
	and also a single .debug_loc entry being used multiple times.
This commit is contained in:
Jakub Jelinek 2011-05-25 15:10:56 +00:00
parent f2db709f4f
commit 51d0d03fd3
2 changed files with 46 additions and 10 deletions
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7
binutils/ChangeLog
View File

@ -1,3 +1,10 @@
2011-05-25 Jakub Jelinek <jakub@redhat.com>
* dwarf.c (loc_offsets): New variable.
(loc_offsets_compar): New routine.
(display_debug_loc): Handle loc_offsets not being in ascending order
and also a single .debug_loc entry being used multiple times.
2011-05-18 Nick Clifton <nickc@redhat.com>
PR binutils/12753

49
binutils/dwarf.c
View File

@ -3488,6 +3488,19 @@ display_debug_abbrev (struct dwarf_section *section,
return 1;
}
/* Sort array of indexes in ascending order of loc_offsets[idx]. */
static dwarf_vma *loc_offsets;
static int
loc_offsets_compar (const void *ap, const void *bp)
{
dwarf_vma a = loc_offsets[*(const unsigned int *) ap];
dwarf_vma b = loc_offsets[*(const unsigned int *) bp];
return (a > b) - (b > a);
}
static int
display_debug_loc (struct dwarf_section *section, void *file)
{
@ -3500,9 +3513,11 @@ display_debug_loc (struct dwarf_section *section, void *file)
unsigned int first = 0;
unsigned int i;
unsigned int j;
unsigned int k;
int seen_first_offset = 0;
int use_debug_info = 1;
int locs_sorted = 1;
unsigned char *next;
unsigned int *array = NULL;
bytes = section->size;
section_end = start + bytes;
@ -3528,10 +3543,11 @@ display_debug_loc (struct dwarf_section *section, void *file)
unsigned int num;
num = debug_information [i].num_loc_offsets;
num_loc_list += num;
if (num > num_loc_list)
num_loc_list = num;
/* Check if we can use `debug_information' directly. */
if (use_debug_info && num != 0)
if (locs_sorted && num != 0)
{
if (!seen_first_offset)
{
@ -3549,7 +3565,7 @@ display_debug_loc (struct dwarf_section *section, void *file)
if (last_offset >
debug_information [i].loc_offsets [j])
{
use_debug_info = 0;
locs_sorted = 0;
break;
}
last_offset = debug_information [i].loc_offsets [j];
@ -3557,10 +3573,6 @@ display_debug_loc (struct dwarf_section *section, void *file)
}
}
if (!use_debug_info)
/* FIXME: Should we handle this case? */
error (_("Location lists in .debug_info section aren't in ascending order!\n"));
if (!seen_first_offset)
error (_("No location lists in .debug_info section!\n"));
@ -3571,6 +3583,8 @@ display_debug_loc (struct dwarf_section *section, void *file)
section->name,
dwarf_vmatoa ("x", debug_information [first].loc_offsets [0]));
if (!locs_sorted)
array = (unsigned int *) xcmalloc (num_loc_list, sizeof (unsigned int));
printf (_("Contents of the %s section:\n\n"), section->name);
printf (_(" Offset Begin End Expression\n"));
@ -3593,9 +3607,23 @@ display_debug_loc (struct dwarf_section *section, void *file)
cu_offset = debug_information [i].cu_offset;
offset_size = debug_information [i].offset_size;
dwarf_version = debug_information [i].dwarf_version;
for (j = 0; j < debug_information [i].num_loc_offsets; j++)
if (!locs_sorted)
{
for (k = 0; k < debug_information [i].num_loc_offsets; k++)
array[k] = k;
loc_offsets = debug_information [i].loc_offsets;
qsort (array, debug_information [i].num_loc_offsets,
sizeof (*array), loc_offsets_compar);
}
for (k = 0; k < debug_information [i].num_loc_offsets; k++)
{
j = locs_sorted ? k : array[k];
if (k
&& debug_information [i].loc_offsets [locs_sorted
? k - 1 : array [k - 1]]
== debug_information [i].loc_offsets [j])
continue;
has_frame_base = debug_information [i].have_frame_base [j];
/* DWARF sections under Mach-O have non-zero addresses. */
offset = debug_information [i].loc_offsets [j] - section->address;
@ -3709,6 +3737,7 @@ display_debug_loc (struct dwarf_section *section, void *file)
warn (_("There are %ld unused bytes at the end of section %s\n"),
(long) (section_end - start), section->name);
putchar ('\n');
free (array);
return 1;
}