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Diffstat (limited to 'bfd/dwarf2.c')
-rw-r--r--bfd/dwarf2.c234
1 files changed, 125 insertions, 109 deletions
diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
index 767fa52..66fd16f 100644
--- a/bfd/dwarf2.c
+++ b/bfd/dwarf2.c
@@ -3117,6 +3117,122 @@ stash_find_line_fast (struct dwarf2_debug *stash,
filename_ptr, linenumber_ptr);
}
+/* Read debug information from DEBUG_BFD when DEBUG_BFD is specified.
+ If DEBUG_BFD is not specified, we read debug information from ABFD
+ or its gnu_debuglink. The results will be stored in PINFO.
+ The function returns TRUE iff debug information is ready. */
+
+bfd_boolean
+_bfd_dwarf2_slurp_debug_info (bfd *abfd, bfd *debug_bfd,
+ const struct dwarf_debug_section *debug_sections,
+ asymbol **symbols,
+ void **pinfo)
+{
+ bfd_size_type amt = sizeof (struct dwarf2_debug);
+ bfd_size_type total_size;
+ asection *msec;
+ struct dwarf2_debug *stash = (struct dwarf2_debug *) *pinfo;
+
+ if (stash != NULL)
+ return TRUE;
+
+ stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt);
+ if (! stash)
+ return FALSE;
+ stash->debug_sections = debug_sections;
+
+ *pinfo = stash;
+
+ if (debug_bfd == NULL)
+ debug_bfd = abfd;
+
+ msec = find_debug_info (debug_bfd, debug_sections, NULL);
+ if (msec == NULL && abfd == debug_bfd)
+ {
+ char * debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR);
+
+ if (debug_filename == NULL)
+ /* No dwarf2 info, and no gnu_debuglink to follow.
+ Note that at this point the stash has been allocated, but
+ contains zeros. This lets future calls to this function
+ fail more quickly. */
+ return FALSE;
+
+ if ((debug_bfd = bfd_openr (debug_filename, NULL)) == NULL
+ || ! bfd_check_format (debug_bfd, bfd_object)
+ || (msec = find_debug_info (debug_bfd,
+ debug_sections, NULL)) == NULL)
+ {
+ if (debug_bfd)
+ bfd_close (debug_bfd);
+ /* FIXME: Should we report our failure to follow the debuglink ? */
+ free (debug_filename);
+ return FALSE;
+ }
+ }
+
+ /* There can be more than one DWARF2 info section in a BFD these
+ days. First handle the easy case when there's only one. If
+ there's more than one, try case two: none of the sections is
+ compressed. In that case, read them all in and produce one
+ large stash. We do this in two passes - in the first pass we
+ just accumulate the section sizes, and in the second pass we
+ read in the section's contents. (The allows us to avoid
+ reallocing the data as we add sections to the stash.) If
+ some or all sections are compressed, then do things the slow
+ way, with a bunch of reallocs. */
+
+ if (! find_debug_info (debug_bfd, debug_sections, msec))
+ {
+ /* Case 1: only one info section. */
+ total_size = msec->size;
+ if (! read_section (debug_bfd, &stash->debug_sections[debug_info],
+ symbols, 0,
+ &stash->info_ptr_memory, &total_size))
+ return FALSE;
+ }
+ else
+ {
+ /* Case 2: multiple sections. */
+ for (total_size = 0;
+ msec;
+ msec = find_debug_info (debug_bfd, debug_sections, msec))
+ total_size += msec->size;
+
+ stash->info_ptr_memory = (bfd_byte *) bfd_malloc (total_size);
+ if (stash->info_ptr_memory == NULL)
+ return FALSE;
+
+ total_size = 0;
+ for (msec = find_debug_info (debug_bfd, debug_sections, NULL);
+ msec;
+ msec = find_debug_info (debug_bfd, debug_sections, msec))
+ {
+ bfd_size_type size;
+
+ size = msec->size;
+ if (size == 0)
+ continue;
+
+ if (!(bfd_simple_get_relocated_section_contents
+ (debug_bfd, msec, stash->info_ptr_memory + total_size,
+ symbols)))
+ return FALSE;
+
+ total_size += size;
+ }
+ }
+
+ stash->info_ptr = stash->info_ptr_memory;
+ stash->info_ptr_end = stash->info_ptr + total_size;
+ stash->sec = find_debug_info (debug_bfd, debug_sections, NULL);
+ stash->sec_info_ptr = stash->info_ptr;
+ stash->syms = symbols;
+ stash->bfd_ptr = debug_bfd;
+
+ return TRUE;
+}
+
/* Find the source code location of SYMBOL. If SYMBOL is NULL
then find the nearest source code location corresponding to
the address SECTION + OFFSET.
@@ -3157,17 +3273,16 @@ find_line (bfd *abfd,
bfd_vma found = FALSE;
bfd_boolean do_line;
- stash = (struct dwarf2_debug *) *pinfo;
+ *filename_ptr = NULL;
+ if (functionname_ptr != NULL)
+ *functionname_ptr = NULL;
+ *linenumber_ptr = 0;
- if (! stash)
- {
- bfd_size_type amt = sizeof (struct dwarf2_debug);
+ if (! _bfd_dwarf2_slurp_debug_info (abfd, NULL,
+ debug_sections, symbols, pinfo))
+ return FALSE;
- stash = (struct dwarf2_debug *) bfd_zalloc (abfd, amt);
- if (! stash)
- return FALSE;
- stash->debug_sections = debug_sections;
- }
+ stash = (struct dwarf2_debug *) *pinfo;
/* In a relocatable file, 2 functions may have the same address.
We change the section vma so that they won't overlap. */
@@ -3197,110 +3312,11 @@ find_line (bfd *abfd,
addr += section->output_section->vma + section->output_offset;
else
addr += section->vma;
- *filename_ptr = NULL;
- if (! do_line)
- *functionname_ptr = NULL;
- *linenumber_ptr = 0;
-
- if (! *pinfo)
- {
- bfd *debug_bfd;
- bfd_size_type total_size;
- asection *msec;
-
- *pinfo = stash;
-
- msec = find_debug_info (abfd, debug_sections, NULL);
- if (msec == NULL)
- {
- char * debug_filename = bfd_follow_gnu_debuglink (abfd, DEBUGDIR);
-
- if (debug_filename == NULL)
- /* No dwarf2 info, and no gnu_debuglink to follow.
- Note that at this point the stash has been allocated, but
- contains zeros. This lets future calls to this function
- fail more quickly. */
- goto done;
-
- if ((debug_bfd = bfd_openr (debug_filename, NULL)) == NULL
- || ! bfd_check_format (debug_bfd, bfd_object)
- || (msec = find_debug_info (debug_bfd,
- debug_sections, NULL)) == NULL)
- {
- if (debug_bfd)
- bfd_close (debug_bfd);
- /* FIXME: Should we report our failure to follow the debuglink ? */
- free (debug_filename);
- goto done;
- }
- }
- else
- debug_bfd = abfd;
-
- /* There can be more than one DWARF2 info section in a BFD these
- days. First handle the easy case when there's only one. If
- there's more than one, try case two: none of the sections is
- compressed. In that case, read them all in and produce one
- large stash. We do this in two passes - in the first pass we
- just accumulate the section sizes, and in the second pass we
- read in the section's contents. (The allows us to avoid
- reallocing the data as we add sections to the stash.) If
- some or all sections are compressed, then do things the slow
- way, with a bunch of reallocs. */
-
- if (! find_debug_info (debug_bfd, debug_sections, msec))
- {
- /* Case 1: only one info section. */
- total_size = msec->size;
- if (! read_section (debug_bfd, &stash->debug_sections[debug_info],
- symbols, 0,
- &stash->info_ptr_memory, &total_size))
- goto done;
- }
- else
- {
- /* Case 2: multiple sections. */
- for (total_size = 0;
- msec;
- msec = find_debug_info (debug_bfd, debug_sections, msec))
- total_size += msec->size;
-
- stash->info_ptr_memory = (bfd_byte *) bfd_malloc (total_size);
- if (stash->info_ptr_memory == NULL)
- goto done;
-
- total_size = 0;
- for (msec = find_debug_info (debug_bfd, debug_sections, NULL);
- msec;
- msec = find_debug_info (debug_bfd, debug_sections, msec))
- {
- bfd_size_type size;
-
- size = msec->size;
- if (size == 0)
- continue;
-
- if (!(bfd_simple_get_relocated_section_contents
- (debug_bfd, msec, stash->info_ptr_memory + total_size,
- symbols)))
- goto done;
-
- total_size += size;
- }
- }
-
- stash->info_ptr = stash->info_ptr_memory;
- stash->info_ptr_end = stash->info_ptr + total_size;
- stash->sec = find_debug_info (debug_bfd, debug_sections, NULL);
- stash->sec_info_ptr = stash->info_ptr;
- stash->syms = symbols;
- stash->bfd_ptr = debug_bfd;
- }
/* A null info_ptr indicates that there is no dwarf2 info
(or that an error occured while setting up the stash). */
if (! stash->info_ptr)
- goto done;
+ return FALSE;
stash->inliner_chain = NULL;
generated by cgit v1.1 at 2024-12-21 11:41:10 +0000