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Re: Patch: DWARF browser
Tom> I have been wanting a nicer way to browse DWARF, so I came up with the
Tom> appended. It is an Emacs mode for DWARF browsing, plus a couple of new
Tom> supporting readelf features.
Nick> Nice - the patch is approved, although please also add a line to
Nick> binutils/NEWS mentioning the new feature.
Nick> A patch to add this functionality to objdump is pre-approved.
Here is the combined patch I am checking in.
It includes a similar change to objdump, and per Tristan's request I
changed dwarf-mode.el to use objdump.
The test case change is because I had changed a format from "%2lx" to
just "%lx". I didn't notice the test failure the first time around. I
hope this is ok; but if not let me know and I will revert that bit and
fix dwarf-mode to follow.
Tom
2011-04-28 Tom Tromey <tromey@redhat.com>
* NEWS: Add note about --dwarf-depth, --dwarf-start, and
dwarf-mode.el.
* objdump.c (suppress_bfd_header): New global.
(usage): Update.
(OPTION_DWARF_DEPTH, OPTION_DWARF_START): New constants.
(options): Add dwarf-depth and dwarf-start entries.
(dump_bfd): Use suppress_bfd_header.
(main): Handle OPTION_DWARF_START, OPTION_DWARF_DEPTH.
* doc/binutils.texi (objcopy): Document --dwarf-depth and
--dwarf-start.
(readelf): Likewise.
* dwarf-mode.el: New file.
* dwarf.c (dwarf_cutoff_level, dwarf_start_die): New globals.
(read_and_display_attr_value): Also check debug_info_p.
(process_debug_info): Handle dwarf_start_die and
dwarf_cutoff_level.
* dwarf.h (dwarf_cutoff_level, dwarf_start_die): Declare.
* readelf.c (usage): Update.
(OPTION_DWARF_DEPTH): New macro.
(OPTION_DWARF_START): Likewise.
(options): Add dwarf-depth and dwarf-start entries.
(parse_args): Handle OPTION_DWARF_START and OPTION_DWARF_DEPTH.
2011-04-28 Tom Tromey <tromey@redhat.com>
* binutils-all/objdump.W: Correct output.
diff --git a/binutils/NEWS b/binutils/NEWS
index d1b2a51..e069a25 100644
--- a/binutils/NEWS
+++ b/binutils/NEWS
@@ -3,6 +3,9 @@
* Add --preprocessor-arg option to windres to specify additional options
passed to preprocessor.
+* Add --dwarf-start and --dwarf-end to readelf and objdump. These are used by
+ the new Emacs mode, see dwarf-mode.el.
+
Changes in 2.21:
* Add --interleave-width option to objcopy to allowing copying a range of
diff --git a/binutils/doc/binutils.texi b/binutils/doc/binutils.texi
index 45a7ff7..08e1c4e 100644
--- a/binutils/doc/binutils.texi
+++ b/binutils/doc/binutils.texi
@@ -1076,6 +1076,8 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}]
[@option{--subsystem=}@var{which}:@var{major}.@var{minor}]
[@option{--compress-debug-sections}]
[@option{--decompress-debug-sections}]
+ [@option{--dwarf-depth=@var{n}}]
+ [@option{--dwarf-start=@var{n}}]
[@option{-v}|@option{--verbose}]
[@option{-V}|@option{--version}]
[@option{--help}] [@option{--info}]
@@ -2129,6 +2131,28 @@ then only data found in those specific sections will be dumped.
Note that there is no single letter option to display the content of
trace sections or .gdb_index.
+Note: the output from the @option{=info} option can also be affected
+by the options @option{--dwarf-depth} and @option{--dwarf-start}.
+
+@item --dwarf-depth=@var{n}
+Limit the dump of the @code{.debug_info} section to @var{n} children.
+This is only useful with @option{--dwarf=info}. The default is
+to print all DIEs; the special value 0 for @var{n} will also have this
+effect.
+
+With a non-zero value for @var{n}, DIEs at or deeper than @var{n}
+levels will not be printed. The range for @var{n} is zero-based.
+
+@item --dwarf-start=@var{n}
+Print only DIEs beginning with the DIE numbered @var{n}. This is only
+useful with @option{--dwarf=info}.
+
+If specified, this option will suppress printing of any header
+information and all DIEs before the DIE numbered @var{n}. Only
+siblings and children of the specified DIE will be printed.
+
+This can be used in conjunction with @option{--dwarf-depth}.
+
@item -G
@itemx --stabs
@cindex stab
@@ -3957,6 +3981,8 @@ readelf [@option{-a}|@option{--all}]
[@option{-c}|@option{--archive-index}]
[@option{-w[lLiaprmfFsoRt]}|
@option{--debug-dump}[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index]]
+ [@option{--dwarf-depth=@var{n}}]
+ [@option{--dwarf-start=@var{n}}]
[@option{-I}|@option{--histogram}]
[@option{-v}|@option{--version}]
[@option{-W}|@option{--wide}]
@@ -4124,6 +4150,28 @@ Note: the @option{=frames-interp} option will display the interpreted
contents of a .debug_frame section whereas the @option{=frames} option
dumps the contents in a raw format.
+Note: the output from the @option{=info} option can also be affected
+by the options @option{--dwarf-depth} and @option{--dwarf-start}.
+
+@item --dwarf-depth=@var{n}
+Limit the dump of the @code{.debug_info} section to @var{n} children.
+This is only useful with @option{--debug-dump=info}. The default is
+to print all DIEs; the special value 0 for @var{n} will also have this
+effect.
+
+With a non-zero value for @var{n}, DIEs at or deeper than @var{n}
+levels will not be printed. The range for @var{n} is zero-based.
+
+@item --dwarf-start=@var{n}
+Print only DIEs beginning with the DIE numbered @var{n}. This is only
+useful with @option{--debug-dump=info}.
+
+If specified, this option will suppress printing of any header
+information and all DIEs before the DIE numbered @var{n}. Only
+siblings and children of the specified DIE will be printed.
+
+This can be used in conjunction with @option{--dwarf-depth}.
+
@item -I
@itemx --histogram
Display a histogram of bucket list lengths when displaying the contents
diff --git a/binutils/dwarf-mode.el b/binutils/dwarf-mode.el
new file mode 100644
index 0000000..3362bc4
--- /dev/null
+++ b/binutils/dwarf-mode.el
@@ -0,0 +1,167 @@
+;;; dwarf-mode.el --- Browser for DWARF information.
+
+;; Version: 1.0
+
+;; This file is not part of GNU Emacs, but is distributed under the
+;; same terms:
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(defvar dwarf-objdump-program "objdump")
+
+(defconst dwarf-font-lock-keywords
+ '(
+ ;; Name and linkage name.
+ ("DW_AT_[a-z_]*name\\s *: .*:\\(.*\\)\\s *$"
+ (1 font-lock-function-name-face))
+
+ ("Compilation Unit @ offset 0x[0-9a-f]+"
+ (0 font-lock-string-face))
+ ))
+
+(defvar dwarf-file nil
+ "Buffer-local variable holding the file name passed to objdump.")
+
+;; Expand a "..." to show all the child DIES. NEW-DEPTH controls how
+;; deep to display the new dies; `nil' means display all of them.
+(defun dwarf-do-insert-substructure (new-depth die)
+ (let ((inhibit-read-only t))
+ (beginning-of-line)
+ (delete-region (point) (progn
+ (end-of-line)
+ (forward-char)
+ (point)))
+ (save-excursion
+ (apply #'call-process dwarf-objdump-program nil (current-buffer) nil
+ "-Wi" (concat "--dwarf-start=0x" die)
+ dwarf-file
+ (if new-depth (list (concat "--dwarf-depth="
+ (int-to-string new-depth))))))
+ (set-buffer-modified-p nil)))
+
+(defun dwarf-insert-substructure-button (die)
+ (beginning-of-line)
+ (unless (looking-at "^ <\\([0-9]+\\)>")
+ (error "Unrecognized line."))
+ (let ((new-depth (1+ (string-to-int (match-string 1)))))
+ (dwarf-do-insert-substructure new-depth die)))
+
+(defun dwarf-insert-substructure (arg)
+ "Expand a `...' to show children of the current DIE.
+By default, expands just one level of children.
+A prefix argument means expand all children."
+ (interactive "P")
+ (beginning-of-line)
+ (unless (looking-at "^ <\\([0-9]+\\)><\\([0-9a-f]+\\)>")
+ (error "Unrecognized line."))
+ (let ((die (match-string 2)))
+ (if arg
+ (dwarf-do-insert-substructure nil die)
+ (dwarf-insert-substructure-button die))))
+
+;; Called when a button is pressed.
+;; Either follows a DIE reference, or expands a "...".
+(defun dwarf-die-button-action (button)
+ (let* ((die (button-get button 'die))
+ ;; Note that the first number can only be decimal.
+ (die-rx (concat "^\\s *\\(<[0-9]+>\\)?<"
+ die ">[^<]"))
+ (old (point))
+ (is-ref (button-get button 'die-ref)))
+ (if is-ref
+ (progn
+ (goto-char (point-min))
+ (if (re-search-forward die-rx nil 'move)
+ (push-mark old)
+ (goto-char old)
+ (error "Could not find DIE <0x%s>" die)))
+ (dwarf-insert-substructure-button die))))
+
+;; Button definition.
+(define-button-type 'dwarf-die-button
+ 'follow-link t
+ 'action #'dwarf-die-button-action)
+
+;; Helper regexp to match a DIE reference.
+(defconst dwarf-die-reference ": \\(<0x\\([0-9a-f]+\\)>\\)\\s *$")
+
+;; Helper regexp to match a `...' indicating that there are hidden
+;; children.
+(defconst dwarf-die-more "^ <[0-9]+><\\([0-9a-z]+\\)>: \\([.][.][.]\\)")
+
+;; jit-lock callback function to fontify a region. This applies the
+;; buttons, since AFAICT there is no good way to apply buttons via
+;; font-lock.
+(defun dwarf-fontify-region (start end)
+ (save-excursion
+ (let ((beg-line (progn (goto-char start) (line-beginning-position)))
+ (end-line (progn (goto-char end) (line-end-position))))
+ (goto-char beg-line)
+ (while (re-search-forward dwarf-die-reference end-line 'move)
+ (let ((b-start (match-beginning 1))
+ (b-end (match-end 1))
+ (hex (match-string-no-properties 2)))
+ (make-text-button b-start b-end :type 'dwarf-die-button
+ 'die hex 'die-ref t)))
+ ;; This is a bogus approach. Why can't we make buttons from the
+ ;; font-lock defaults?
+ (goto-char beg-line)
+ (while (re-search-forward dwarf-die-more end-line 'move)
+ (let ((hex (match-string-no-properties 1))
+ (b-start (match-beginning 2))
+ (b-end (match-end 2)))
+ (make-text-button b-start b-end :type 'dwarf-die-button
+ 'die hex 'die-ref nil))))))
+
+;; Run objdump and insert the contents into the buffer. The arguments
+;; are the way they are because this is also called as a
+;; revert-buffer-function.
+(defun dwarf-do-refresh (&rest ignore)
+ (let ((inhibit-read-only t))
+ (erase-buffer)
+ (save-excursion
+ (call-process dwarf-objdump-program
+ nil (current-buffer) nil
+ "-Wi" "--dwarf-depth=1"
+ dwarf-file))
+ (set-buffer-modified-p nil)))
+
+;;;###autoload
+(define-derived-mode dwarf-mode special-mode "DWARF"
+ "Major mode for browsing DWARF output.
+
+\\{dwarf-mode-map}"
+
+ (set (make-local-variable 'font-lock-defaults) '(dwarf-font-lock-keywords))
+ ;; FIXME: we could be smarter and check the file time.
+ (set (make-local-variable 'revert-buffer-function) #'dwarf-do-refresh)
+ (jit-lock-register #'dwarf-fontify-region))
+
+(define-key dwarf-mode-map [(control ?m)] #'dwarf-insert-substructure)
+
+;;:###autoload
+(defun dwarf-browse (file)
+ "Invoke `objdump' and put output into a `dwarf-mode' buffer.
+This is the main interface to `dwarf-mode'."
+ (interactive "fFile name: ")
+ (let* ((base-name (file-name-nondirectory file))
+ (buffer (generate-new-buffer (concat "*DWARF for " base-name "*"))))
+ (pop-to-buffer buffer)
+ (dwarf-mode)
+ (set (make-local-variable 'dwarf-file) file)
+ (dwarf-do-refresh)))
+
+(provide 'dwarf-mode)
diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index 8846e87..3086d33 100644
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -63,6 +63,9 @@ int do_trace_abbrevs;
int do_trace_aranges;
int do_wide;
+int dwarf_cutoff_level = -1;
+unsigned long dwarf_start_die;
+
/* Values for do_debug_lines. */
#define FLAG_DEBUG_LINES_RAW 1
#define FLAG_DEBUG_LINES_DECODED 2
@@ -1367,7 +1370,8 @@ read_and_display_attr_value (unsigned long attribute,
}
if ((do_loc || do_debug_loc || do_debug_ranges)
- && num_debug_info_entries == 0)
+ && num_debug_info_entries == 0
+ && debug_info_p != NULL)
{
switch (attribute)
{
@@ -1981,7 +1985,8 @@ process_debug_info (struct dwarf_section *section,
if (!do_loc)
{
- printf (_("Contents of the %s section:\n\n"), section->name);
+ if (dwarf_start_die == 0)
+ printf (_("Contents of the %s section:\n\n"), section->name);
load_debug_section (str, file);
}
@@ -1999,7 +2004,7 @@ process_debug_info (struct dwarf_section *section,
DWARF2_Internal_CompUnit compunit;
unsigned char *hdrptr;
unsigned char *tags;
- int level;
+ int level, last_level, saved_level;
dwarf_vma cu_offset;
int offset_size;
int initial_length_size;
@@ -2068,7 +2073,7 @@ process_debug_info (struct dwarf_section *section,
debug_information [unit].num_range_lists = 0;
}
- if (!do_loc)
+ if (!do_loc && dwarf_start_die == 0)
{
printf (_(" Compilation Unit @ offset 0x%s:\n"),
dwarf_vmatoa ("x", cu_offset));
@@ -2129,6 +2134,8 @@ process_debug_info (struct dwarf_section *section,
+ debug_displays [abbrev_sec].section.size);
level = 0;
+ last_level = level;
+ saved_level = -1;
while (tags < start)
{
unsigned int bytes_read;
@@ -2136,6 +2143,7 @@ process_debug_info (struct dwarf_section *section,
unsigned long die_offset;
abbrev_entry *entry;
abbrev_attr *attr;
+ int do_printing = 1;
die_offset = tags - section_begin;
@@ -2172,12 +2180,30 @@ process_debug_info (struct dwarf_section *section,
warn (_("Further warnings about bogus end-of-sibling markers suppressed\n"));
}
}
+ if (dwarf_start_die != 0 && level < saved_level)
+ return 1;
continue;
}
if (!do_loc)
- printf (_(" <%d><%lx>: Abbrev Number: %lu"),
- level, die_offset, abbrev_number);
+ {
+ if (dwarf_start_die != 0 && die_offset < dwarf_start_die)
+ do_printing = 0;
+ else
+ {
+ if (dwarf_start_die != 0 && die_offset == dwarf_start_die)
+ saved_level = level;
+ do_printing = (dwarf_cutoff_level == -1
+ || level < dwarf_cutoff_level);
+ if (do_printing)
+ printf (_(" <%d><%lx>: Abbrev Number: %lu"),
+ level, die_offset, abbrev_number);
+ else if (dwarf_cutoff_level == -1
+ || last_level < dwarf_cutoff_level)
+ printf (_(" <%d><%lx>: ...\n"), level, die_offset);
+ last_level = level;
+ }
+ }
/* Scan through the abbreviation list until we reach the
correct entry. */
@@ -2188,7 +2214,7 @@ process_debug_info (struct dwarf_section *section,
if (entry == NULL)
{
- if (!do_loc)
+ if (!do_loc && do_printing)
{
printf ("\n");
fflush (stdout);
@@ -2198,7 +2224,7 @@ process_debug_info (struct dwarf_section *section,
return 0;
}
- if (!do_loc)
+ if (!do_loc && do_printing)
printf (" (%s)\n", get_TAG_name (entry->tag));
switch (entry->tag)
@@ -2219,9 +2245,15 @@ process_debug_info (struct dwarf_section *section,
for (attr = entry->first_attr; attr; attr = attr->next)
{
- if (! do_loc)
+ debug_info *arg;
+
+ if (! do_loc && do_printing)
/* Show the offset from where the tag was extracted. */
- printf (" <%2lx>", (unsigned long)(tags - section_begin));
+ printf (" <%lx>", (unsigned long)(tags - section_begin));
+
+ arg = debug_information;
+ if (debug_information)
+ arg += unit;
tags = read_and_display_attr (attr->attribute,
attr->form,
@@ -2229,8 +2261,8 @@ process_debug_info (struct dwarf_section *section,
compunit.cu_pointer_size,
offset_size,
compunit.cu_version,
- debug_information + unit,
- do_loc, section);
+ arg,
+ do_loc || ! do_printing, section);
}
if (entry->children)
diff --git a/binutils/dwarf.h b/binutils/dwarf.h
index 62b57a6..07b95b0 100644
--- a/binutils/dwarf.h
+++ b/binutils/dwarf.h
@@ -200,6 +200,9 @@ extern int do_trace_abbrevs;
extern int do_trace_aranges;
extern int do_wide;
+extern int dwarf_cutoff_level;
+extern unsigned long dwarf_start_die;
+
extern void init_dwarf_regnames (unsigned int);
extern void init_dwarf_regnames_i386 (void);
extern void init_dwarf_regnames_x86_64 (void);
diff --git a/binutils/objdump.c b/binutils/objdump.c
index 8b6bc28..231a668 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -110,6 +110,7 @@ static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
static bfd_vma stop_address = (bfd_vma) -1; /* --stop-address */
static int dump_debugging; /* --debugging */
static int dump_debugging_tags; /* --debugging-tags */
+static int suppress_bfd_header;
static int dump_special_syms = 0; /* --special-syms */
static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
static int file_start_context = 0; /* --file-start-context */
@@ -246,8 +247,11 @@ usage (FILE *stream, int status)
--adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
--special-syms Include special symbols in symbol dumps\n\
--prefix=PREFIX Add PREFIX to absolute paths for -S\n\
- --prefix-strip=LEVEL Strip initial directory names for -S\n\
-\n"));
+ --prefix-strip=LEVEL Strip initial directory names for -S\n"));
+ fprintf (stream, _("\
+ --dwarf-depth=N Do not display DIEs at depth N or greater\n\
+ --dwarf-start=N Display DIEs starting with N, at the same depth\n\
+ or deeper\n\n"));
list_supported_targets (program_name, stream);
list_supported_architectures (program_name, stream);
@@ -268,7 +272,9 @@ enum option_values
OPTION_PREFIX,
OPTION_PREFIX_STRIP,
OPTION_INSN_WIDTH,
- OPTION_ADJUST_VMA
+ OPTION_ADJUST_VMA,
+ OPTION_DWARF_DEPTH,
+ OPTION_DWARF_START
};
static struct option long_options[]=
@@ -316,6 +322,8 @@ static struct option long_options[]=
{"prefix", required_argument, NULL, OPTION_PREFIX},
{"prefix-strip", required_argument, NULL, OPTION_PREFIX_STRIP},
{"insn-width", required_argument, NULL, OPTION_INSN_WIDTH},
+ {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
+ {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
{0, no_argument, 0, 0}
};
@@ -3079,7 +3087,7 @@ dump_bfd (bfd *abfd)
bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
}
- if (! dump_debugging_tags)
+ if (! dump_debugging_tags && ! suppress_bfd_header)
printf (_("\n%s: file format %s\n"), bfd_get_filename (abfd),
abfd->xvec->name);
if (dump_ar_hdrs)
@@ -3088,7 +3096,7 @@ dump_bfd (bfd *abfd)
dump_bfd_header (abfd);
if (dump_private_headers)
dump_bfd_private_header (abfd);
- if (! dump_debugging_tags)
+ if (! dump_debugging_tags && ! suppress_bfd_header)
putchar ('\n');
if (dump_section_headers)
dump_headers (abfd);
@@ -3476,6 +3484,19 @@ main (int argc, char **argv)
else
dwarf_select_sections_all ();
break;
+ case OPTION_DWARF_DEPTH:
+ {
+ char *cp;
+ dwarf_cutoff_level = strtoul (optarg, & cp, 0);
+ }
+ break;
+ case OPTION_DWARF_START:
+ {
+ char *cp;
+ dwarf_start_die = strtoul (optarg, & cp, 0);
+ suppress_bfd_header = 1;
+ }
+ break;
case 'G':
dump_stab_section_info = TRUE;
seenflag = TRUE;
diff --git a/binutils/readelf.c b/binutils/readelf.c
index c4df8d9..6c8b966 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -3073,6 +3073,8 @@ get_section_type_name (unsigned int sh_type)
#define OPTION_DEBUG_DUMP 512
#define OPTION_DYN_SYMS 513
+#define OPTION_DWARF_DEPTH 514
+#define OPTION_DWARF_START 515
static struct option options[] =
{
@@ -3106,6 +3108,9 @@ static struct option options[] =
#endif
{"debug-dump", optional_argument, 0, OPTION_DEBUG_DUMP},
+ {"dwarf-depth", required_argument, 0, OPTION_DWARF_DEPTH},
+ {"dwarf-start", required_argument, 0, OPTION_DWARF_START},
+
{"version", no_argument, 0, 'v'},
{"wide", no_argument, 0, 'W'},
{"help", no_argument, 0, 'H'},
@@ -3149,6 +3154,10 @@ usage (FILE * stream)
=frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
=gdb_index,=trace_info,=trace_abbrev,=trace_aranges]\n\
Display the contents of DWARF2 debug sections\n"));
+ fprintf (stream, _("\
+ --dwarf-depth=N Do not display DIEs at depth N or greater\n\
+ --dwarf-start=N Display DIEs starting with N, at the same depth\n\
+ or deeper\n"));
#ifdef SUPPORT_DISASSEMBLY
fprintf (stream, _("\
-i --instruction-dump=<number|name>\n\
@@ -3355,6 +3364,20 @@ parse_args (int argc, char ** argv)
dwarf_select_sections_by_names (optarg);
}
break;
+ case OPTION_DWARF_DEPTH:
+ {
+ char *cp;
+
+ dwarf_cutoff_level = strtoul (optarg, & cp, 0);
+ }
+ break;
+ case OPTION_DWARF_START:
+ {
+ char *cp;
+
+ dwarf_start_die = strtoul (optarg, & cp, 0);
+ }
+ break;
case OPTION_DYN_SYMS:
do_dyn_syms++;
break;
diff --git a/binutils/testsuite/binutils-all/objdump.W b/binutils/testsuite/binutils-all/objdump.W
index 0197647..5b58fb4 100644
--- a/binutils/testsuite/binutils-all/objdump.W
+++ b/binutils/testsuite/binutils-all/objdump.W
@@ -9,7 +9,7 @@ Contents of the .debug_info section:
Abbrev Offset: 0
Pointer Size: 4
<0><b>: Abbrev Number: 1 \(DW_TAG_compile_unit\)
- < c> DW_AT_stmt_list : 0x0
+ <c> DW_AT_stmt_list : 0x0
<10> DW_AT_high_pc : 0x.
<14> DW_AT_low_pc : 0x.
<18> DW_AT_name : file1.txt