+2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
+
+ * record.h (enum record_print_flag)
+ <record_print_indent_calls>: New.
+ * record.c (get_call_history_modifiers): Recognize /c modifier.
+ (_initialize_record): Document /c modifier.
+ * record-btrace.c (btrace_call_history): Add btinfo parameter.
+ Reorder fields. Optionally indent the function name. Update
+ all users.
+ * NEWS: Announce changes.
+
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* common/linux-btrace.c (linux_enable_btrace): Enlarge buffer.
at one. This also affects the instruction ranges reported by the
'record function-call-history' command when given the /i modifier.
+* The command 'record function-call-history' supports a new modifier '/c' to
+ indent the function names based on their call stack depth.
+ The fields for the '/i' and '/l' modifier have been reordered.
+ The source line range is now prefixed with 'at'.
+ The instruction range is now prefixed with 'inst'.
+ Both ranges are now printed as '<from>, <to>' to allow copy&paste to the
+ "record instruction-history" and "list" commands.
+
*** Changes in GDB 7.7
* Improved support for process record-replay and reverse debugging on
if (begin == NULL)
begin = end;
- /* Maintain the function level offset. */
- level = min (level, end->level);
+ /* Maintain the function level offset.
+ For all but the last block, we do it here. */
+ if (blk != 0)
+ level = min (level, end->level);
ftrace_update_insns (end, pc);
ftrace_update_lines (end, pc);
}
pc += size;
+
+ /* Maintain the function level offset.
+ For the last block, we do it here to not consider the last
+ instruction.
+ Since the last instruction corresponds to the current instruction
+ and is not really part of the execution history, it shouldn't
+ affect the level. */
+ if (blk == 0)
+ level = min (level, end->level);
}
}
+2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
+
+ * gdb.texinfo (Process Record and Replay): Document new /c
+ modifier accepted by "record function-call-history".
+ Add /i modifier to "record function-call-history" example.
+
2014-01-15 Yuanhui Zhang <asmwarrior@gmail.com>
Joel Brobecker <brobecker@adacore.com>
function giving the name of that function, the source lines
for this instruction sequence (if the @code{/l} modifier is
specified), and the instructions numbers that form the sequence (if
-the @code{/i} modifier is specified).
+the @code{/i} modifier is specified). The function names are indented
+to reflect the call stack depth if the @code{/c} modifier is
+specified. The @code{/l}, @code{/i}, and @code{/c} modifiers can be
+given together.
@smallexample
(@value{GDBP}) @b{list 1, 10}
8 foo ();
9 ...
10 @}
-(@value{GDBP}) @b{record function-call-history /l}
-1 foo.c:6-8 bar
-2 foo.c:2-3 foo
-3 foo.c:9-10 bar
+(@value{GDBP}) @b{record function-call-history /ilc}
+1 bar inst 1,4 at foo.c:6,8
+2 foo inst 5,10 at foo.c:2,3
+3 bar inst 11,13 at foo.c:9,10
@end smallexample
By default, ten lines are printed. This can be changed using the
end = begin + size - 1;
ui_out_field_uint (uiout, "insn begin", begin);
- ui_out_text (uiout, "-");
+ ui_out_text (uiout, ",");
ui_out_field_uint (uiout, "insn end", end);
}
if (end == begin)
return;
- ui_out_text (uiout, "-");
+ ui_out_text (uiout, ",");
ui_out_field_int (uiout, "max line", end);
}
static void
btrace_call_history (struct ui_out *uiout,
+ const struct btrace_thread_info *btinfo,
const struct btrace_call_iterator *begin,
const struct btrace_call_iterator *end,
enum record_print_flag flags)
ui_out_field_uint (uiout, "index", bfun->number);
ui_out_text (uiout, "\t");
+ if ((flags & RECORD_PRINT_INDENT_CALLS) != 0)
+ {
+ int level = bfun->level + btinfo->level, i;
+
+ for (i = 0; i < level; ++i)
+ ui_out_text (uiout, " ");
+ }
+
+ if (sym != NULL)
+ ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (sym));
+ else if (msym != NULL)
+ ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (msym));
+ else if (!ui_out_is_mi_like_p (uiout))
+ ui_out_field_string (uiout, "function", "??");
+
if ((flags & RECORD_PRINT_INSN_RANGE) != 0)
{
+ ui_out_text (uiout, _("\tinst "));
btrace_call_history_insn_range (uiout, bfun);
- ui_out_text (uiout, "\t");
}
if ((flags & RECORD_PRINT_SRC_LINE) != 0)
{
+ ui_out_text (uiout, _("\tat "));
btrace_call_history_src_line (uiout, bfun);
- ui_out_text (uiout, "\t");
}
- if (sym != NULL)
- ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (sym));
- else if (msym != NULL)
- ui_out_field_string (uiout, "function", SYMBOL_PRINT_NAME (msym));
-
ui_out_text (uiout, "\n");
}
}
}
if (covered > 0)
- btrace_call_history (uiout, &begin, &end, flags);
+ btrace_call_history (uiout, btinfo, &begin, &end, flags);
else
{
if (size < 0)
if (found == 0)
btrace_call_end (&end, btinfo);
- btrace_call_history (uiout, &begin, &end, flags);
+ btrace_call_history (uiout, btinfo, &begin, &end, flags);
btrace_set_call_history (btinfo, &begin, &end);
do_cleanups (uiout_cleanup);
case 'i':
modifiers |= RECORD_PRINT_INSN_RANGE;
break;
+ case 'c':
+ modifiers |= RECORD_PRINT_INDENT_CALLS;
+ break;
default:
error (_("Invalid modifier: %c."), *args);
}
Without modifiers, it prints the function name.\n\
With a /l modifier, the source file and line number range is included.\n\
With a /i modifier, the instruction number range is included.\n\
+With a /c modifier, the output is indented based on the call stack depth.\n\
With no argument, prints ten more lines after the previous ten-line print.\n\
\"record function-call-history -\" prints ten lines before a previous ten-line \
print.\n\
/* Print the instruction number range (if applicable). */
RECORD_PRINT_INSN_RANGE = (1 << 1),
+
+ /* Indent based on call stack depth (if applicable). */
+ RECORD_PRINT_INDENT_CALLS = (1 << 2)
};
/* Wrapper for target_read_memory that prints a debug message if
+2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
+
+ * gdb.btrace/function_call_history.exp: Fix expected field
+ order for "record function-call-history".
+ Add new tests for "record function-call-history /c".
+ * gdb.btrace/exception.cc: New.
+ * gdb.btrace/exception.exp: New.
+ * gdb.btrace/tailcall.exp: New.
+ * gdb.btrace/x86-tailcall.S: New.
+ * gdb.btrace/x86-tailcall.c: New.
+ * gdb.btrace/unknown_functions.c: New.
+ * gdb.btrace/unknown_functions.exp: New.
+ * gdb.btrace/Makefile.in (EXECUTABLES): Add new.
+
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* gdb.btrace/instruction_history.exp: Update.
VPATH = @srcdir@
srcdir = @srcdir@
-EXECUTABLES = enable function_call_history instruction_history
+EXECUTABLES = enable function_call_history instruction_history tailcall \
+ exception unknown_functions
MISCELLANEOUS =
--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013 Free Software Foundation, Inc.
+
+ Contributed by Intel Corp. <markus.t.metzger@intel.com>
+
+ This program 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.
+
+ This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
+
+static void
+bad (void)
+{
+ throw 42;
+}
+
+static void
+bar (void)
+{
+ bad ();
+}
+
+static void
+foo (void)
+{
+ bar ();
+}
+
+static void
+test (void)
+{
+ try
+ {
+ foo ();
+ }
+ catch (...)
+ {
+ }
+}
+
+int
+main (void)
+{
+ test ();
+ test (); /* bp.1 */
+ return 0; /* bp.2 */
+}
--- /dev/null
+# This testcase is part of GDB, the GNU debugger.
+#
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# Contributed by Intel Corp. <markus.t.metzger@intel.com>
+#
+# This program 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.
+#
+# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+
+# check for btrace support
+if { [skip_btrace_tests] } { return -1 }
+
+# start inferior
+standard_testfile exception.cc
+if [prepare_for_testing $testfile.exp $testfile $srcfile {c++ debug}] {
+ return -1
+}
+if ![runto_main] {
+ return -1
+}
+
+# we want to see the full trace for this test
+gdb_test_no_output "set record function-call-history-size 0"
+
+# set bp
+set bp_1 [gdb_get_line_number "bp.1" $srcfile]
+set bp_2 [gdb_get_line_number "bp.2" $srcfile]
+gdb_breakpoint $bp_1
+gdb_breakpoint $bp_2
+
+# trace the code between the two breakpoints
+gdb_continue_to_breakpoint "cont to bp.1" ".*$srcfile:$bp_1\r\n.*"
+gdb_test_no_output "record btrace"
+gdb_continue_to_breakpoint "cont to bp.2" ".*$srcfile:$bp_2\r\n.*"
+
+# show the flat branch trace
+send_gdb "record function-call-history 1\n"
+gdb_expect_list "flat" "\r\n$gdb_prompt $" [list \
+ [join [list \
+ "1\ttest\\(\\)" \
+ "2\tfoo\\(\\)" \
+ "3\tbar\\(\\)" \
+ "4\tbad\\(\\)" \
+ ] "\r\n"] \
+ "" \
+ "\[0-9\]*\ttest\\(\\)"]
+
+# show the branch trace with calls indented
+send_gdb "record function-call-history /c 1\n"
+gdb_expect_list "indented" "\r\n$gdb_prompt $" [list \
+ [join [list \
+ "1\ttest\\(\\)" \
+ "2\t foo\\(\\)" \
+ "3\t bar\\(\\)" \
+ "4\t bad\\(\\)\r" \
+ ] "\r\n"] \
+ "" \
+ "\[0-9\]*\ttest\\(\\)"]
# make sure we cannot move any further back
gdb_test "record function-call-history -" "At the start of the branch trace record\\." "backward - 4"
+# don't mess around with path names
+gdb_test_no_output "set filename-display basename"
+
# moving forward again, but this time with file and line number, expected to see the first 15 entries
gdb_test "record function-call-history /l +" [join [list \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain"] "\r\n"] "forward /l - 1"
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ ] "\r\n"] "forward /l - 1"
# moving forward and expect to see the latest 6 entries
gdb_test "record function-call-history /l +" [join [list \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-41\tmain" \
- ".*$srcfile:22-24\tinc" \
- ".*$srcfile:40-43\tmain"] "\r\n"] "forward /l - 2"
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,41" \
+ "\[0-9\]*\tinc\tat $srcfile:22,24" \
+ "\[0-9\]*\tmain\tat $srcfile:40,43" \
+ ] "\r\n"] "forward /l - 2"
# moving further forward shouldn't work
gdb_test "record function-call-history /l +" "At the end of the branch trace record\\." "forward /l - 3"
"29\tfib" \
"30\tfib" \
"31\tmain"] "\r\n"] "recursive"
+
+# show indented function call history for fib
+gdb_test "record function-call-history /c 21, +11" [join [list \
+ "21\tmain" \
+ "22\t fib" \
+ "23\t fib" \
+ "24\t fib" \
+ "25\t fib" \
+ "26\t fib" \
+ "27\t fib" \
+ "28\t fib" \
+ "29\t fib" \
+ "30\t fib" \
+ "31\tmain" \
+ ] "\r\n"] "indented"
+
+# make sure we can handle incomplete trace with respect to indentation
+if ![runto_main] {
+ return -1
+}
+# navigate to the fib in line 24 above
+gdb_breakpoint fib
+gdb_continue_to_breakpoint "cont to fib.1"
+gdb_continue_to_breakpoint "cont to fib.2"
+gdb_continue_to_breakpoint "cont to fib.3"
+gdb_continue_to_breakpoint "cont to fib.4"
+
+# start tracing
+gdb_test_no_output "record btrace"
+
+# continue until line 30 above
+delete_breakpoints
+set bp_location [gdb_get_line_number "bp.2" $testfile.c]
+gdb_breakpoint $bp_location
+gdb_continue_to_breakpoint "cont to bp.2" ".*$testfile.c:$bp_location\r\n.*"
+
+# let's look at the trace. we expect to see the tail of the above listing.
+gdb_test "record function-call-history /c" [join [list \
+ "1\t fib" \
+ "2\t fib" \
+ "3\t fib" \
+ "4\t fib" \
+ "5\t fib" \
+ "6\tmain" \
+ ] "\r\n"] "indented tail"
--- /dev/null
+# This testcase is part of GDB, the GNU debugger.
+#
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# Contributed by Intel Corp. <markus.t.metzger@intel.com>
+#
+# This program 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.
+#
+# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+
+# check for btrace support
+if { [skip_btrace_tests] } { return -1 }
+
+# start inferior
+standard_testfile x86-tailcall.S
+
+set opts {}
+if [info exists COMPILE] {
+ # make check RUNTESTFLAGS="gdb.btrace/tailcall.exp COMPILE=1"
+ standard_testfile x86-tailcall.c
+ lappend opts debug optimize=-O2
+} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+ verbose "Skipping ${testfile}."
+ return
+}
+
+if [prepare_for_testing tailcall.exp $testfile $srcfile $opts] {
+ return -1
+}
+if ![runto_main] {
+ return -1
+}
+
+# we want to see the full trace for this test
+gdb_test_no_output "set record function-call-history-size 0"
+
+# trace the call to foo
+gdb_test_no_output "record btrace"
+gdb_test "next"
+
+# show the flat branch trace
+gdb_test "record function-call-history 1" [join [list \
+ "1\tfoo" \
+ "2\tbar" \
+ "3\tmain" \
+ ] "\r\n"] "flat"
+
+# show the branch trace with calls indented
+gdb_test "record function-call-history /c 1" [join [list \
+ "1\t foo" \
+ "2\t bar" \
+ "3\tmain" \
+ ] "\r\n"] "indented"
--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013 Free Software Foundation, Inc.
+
+ Contributed by Intel Corp. <markus.t.metzger@intel.com>
+
+ This program 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.
+
+ This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
+
+static int foo (void);
+
+int test (void)
+{
+ return foo ();
+}
+
+static int
+bar (void)
+{
+ return 42;
+}
+
+static int
+foo (void)
+{
+ return bar ();
+}
+
+int
+main (void)
+{
+ test ();
+ test ();
+ return 0;
+}
--- /dev/null
+# This testcase is part of GDB, the GNU debugger.
+#
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# Contributed by Intel Corp. <markus.t.metzger@intel.com>
+#
+# This program 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.
+#
+# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+
+# check for btrace support
+if { [skip_btrace_tests] } { return -1 }
+
+# start inferior
+standard_testfile
+
+# discard local symbols
+set ldflags "additional_flags=-Wl,-x"
+if [prepare_for_testing $testfile.exp $testfile $srcfile $ldflags] {
+ return -1
+}
+if ![runto test] {
+ return -1
+}
+
+# we want to see the full trace for this test
+gdb_test_no_output "set record function-call-history-size 0"
+
+# trace from one call of test to the next
+gdb_test_no_output "record btrace"
+gdb_continue_to_breakpoint "cont to test" ".*test.*"
+
+# show the flat branch trace
+gdb_test "record function-call-history 1" [join [list \
+ "1\t\\\?\\\?" \
+ "2\t\\\?\\\?" \
+ "3\t\\\?\\\?" \
+ "4\ttest" \
+ "5\tmain" \
+ "6\ttest" \
+ ] "\r\n"] "flat"
+
+# show the branch trace with calls indented
+gdb_test "record function-call-history /c 1" [join [list \
+ "1\t \\\?\\\?" \
+ "2\t \\\?\\\?" \
+ "3\t \\\?\\\?" \
+ "4\t test" \
+ "5\tmain" \
+ "6\t test" \
+ ] "\r\n"] "indented"
--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013 Free Software Foundation, Inc.
+
+ Contributed by Intel Corp. <markus.t.metzger@intel.com>
+
+ This program 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.
+
+ This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+ This file has been generated using:
+ gcc -S -O2 -dA -g x86-tailcall.c -o x86-tailcall.S */
+
+ .file "x86-tailcall.c"
+ .section .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+ .section .debug_info,"",@progbits
+.Ldebug_info0:
+ .section .debug_line,"",@progbits
+.Ldebug_line0:
+ .text
+.Ltext0:
+ .p2align 4,,15
+ .type bar, @function
+bar:
+.LFB0:
+ .file 1 "x86-tailcall.c"
+ # x86-tailcall.c:22
+ .loc 1 22 0
+ .cfi_startproc
+ # basic block 2
+ # x86-tailcall.c:24
+ .loc 1 24 0
+ movl $42, %eax
+ ret
+ .cfi_endproc
+.LFE0:
+ .size bar, .-bar
+ .p2align 4,,15
+ .type foo, @function
+foo:
+.LFB1:
+ # x86-tailcall.c:28
+ .loc 1 28 0
+ .cfi_startproc
+ # basic block 2
+ # x86-tailcall.c:29
+ .loc 1 29 0
+ jmp bar
+ .cfi_endproc
+.LFE1:
+ .size foo, .-foo
+ .p2align 4,,15
+.globl main
+ .type main, @function
+main:
+.LFB2:
+ # x86-tailcall.c:34
+ .loc 1 34 0
+ .cfi_startproc
+ # basic block 2
+ # x86-tailcall.c:37
+ .loc 1 37 0
+ call foo
+.LVL0:
+ addl $1, %eax
+.LVL1:
+ # x86-tailcall.c:39
+ .loc 1 39 0
+ ret
+ .cfi_endproc
+.LFE2:
+ .size main, .-main
+.Letext0:
+ .section .debug_loc,"",@progbits
+.Ldebug_loc0:
+.LLST0:
+ .quad .LVL0-.Ltext0 # Location list begin address (*.LLST0)
+ .quad .LVL1-.Ltext0 # Location list end address (*.LLST0)
+ .value 0x3 # Location expression size
+ .byte 0x70 # DW_OP_breg0
+ .sleb128 1
+ .byte 0x9f # DW_OP_stack_value
+ .quad .LVL1-.Ltext0 # Location list begin address (*.LLST0)
+ .quad .LFE2-.Ltext0 # Location list end address (*.LLST0)
+ .value 0x1 # Location expression size
+ .byte 0x50 # DW_OP_reg0
+ .quad 0x0 # Location list terminator begin (*.LLST0)
+ .quad 0x0 # Location list terminator end (*.LLST0)
+ .section .debug_info
+ .long 0x9c # Length of Compilation Unit Info
+ .value 0x3 # DWARF version number
+ .long .Ldebug_abbrev0 # Offset Into Abbrev. Section
+ .byte 0x8 # Pointer Size (in bytes)
+ .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit)
+ .long .LASF0 # DW_AT_producer: "GNU C 4.4.4 20100726 (Red Hat 4.4.4-13)"
+ .byte 0x1 # DW_AT_language
+ .long .LASF1 # DW_AT_name: "x86-tailcall.c"
+ .long .LASF2 # DW_AT_comp_dir: ""
+ .quad .Ltext0 # DW_AT_low_pc
+ .quad .Letext0 # DW_AT_high_pc
+ .long .Ldebug_line0 # DW_AT_stmt_list
+ .uleb128 0x2 # (DIE (0x2d) DW_TAG_subprogram)
+ .ascii "bar\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (x86-tailcall.c)
+ .byte 0x15 # DW_AT_decl_line
+ .byte 0x1 # DW_AT_prototyped
+ .long 0x4b # DW_AT_type
+ .quad .LFB0 # DW_AT_low_pc
+ .quad .LFE0 # DW_AT_high_pc
+ .byte 0x1 # DW_AT_frame_base
+ .byte 0x9c # DW_OP_call_frame_cfa
+ .uleb128 0x3 # (DIE (0x4b) DW_TAG_base_type)
+ .byte 0x4 # DW_AT_byte_size
+ .byte 0x5 # DW_AT_encoding
+ .ascii "int\0" # DW_AT_name
+ .uleb128 0x2 # (DIE (0x52) DW_TAG_subprogram)
+ .ascii "foo\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (x86-tailcall.c)
+ .byte 0x1b # DW_AT_decl_line
+ .byte 0x1 # DW_AT_prototyped
+ .long 0x4b # DW_AT_type
+ .quad .LFB1 # DW_AT_low_pc
+ .quad .LFE1 # DW_AT_high_pc
+ .byte 0x1 # DW_AT_frame_base
+ .byte 0x9c # DW_OP_call_frame_cfa
+ .uleb128 0x4 # (DIE (0x70) DW_TAG_subprogram)
+ .byte 0x1 # DW_AT_external
+ .long .LASF3 # DW_AT_name: "main"
+ .byte 0x1 # DW_AT_decl_file (x86-tailcall.c)
+ .byte 0x21 # DW_AT_decl_line
+ .byte 0x1 # DW_AT_prototyped
+ .long 0x4b # DW_AT_type
+ .quad .LFB2 # DW_AT_low_pc
+ .quad .LFE2 # DW_AT_high_pc
+ .byte 0x1 # DW_AT_frame_base
+ .byte 0x9c # DW_OP_call_frame_cfa
+ .uleb128 0x5 # (DIE (0x8f) DW_TAG_variable)
+ .long .LASF4 # DW_AT_name: "answer"
+ .byte 0x1 # DW_AT_decl_file (x86-tailcall.c)
+ .byte 0x23 # DW_AT_decl_line
+ .long 0x4b # DW_AT_type
+ .long .LLST0 # DW_AT_location
+ .byte 0x0 # end of children of DIE 0x70
+ .byte 0x0 # end of children of DIE 0xb
+ .section .debug_abbrev
+ .uleb128 0x1 # (abbrev code)
+ .uleb128 0x11 # (TAG: DW_TAG_compile_unit)
+ .byte 0x1 # DW_children_yes
+ .uleb128 0x25 # (DW_AT_producer)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x13 # (DW_AT_language)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x1b # (DW_AT_comp_dir)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x11 # (DW_AT_low_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x12 # (DW_AT_high_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x10 # (DW_AT_stmt_list)
+ .uleb128 0x6 # (DW_FORM_data4)
+ .byte 0x0
+ .byte 0x0
+ .uleb128 0x2 # (abbrev code)
+ .uleb128 0x2e # (TAG: DW_TAG_subprogram)
+ .byte 0x0 # DW_children_no
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0x8 # (DW_FORM_string)
+ .uleb128 0x3a # (DW_AT_decl_file)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3b # (DW_AT_decl_line)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x27 # (DW_AT_prototyped)
+ .uleb128 0xc # (DW_FORM_flag)
+ .uleb128 0x49 # (DW_AT_type)
+ .uleb128 0x13 # (DW_FORM_ref4)
+ .uleb128 0x11 # (DW_AT_low_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x12 # (DW_AT_high_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x40 # (DW_AT_frame_base)
+ .uleb128 0xa # (DW_FORM_block1)
+ .byte 0x0
+ .byte 0x0
+ .uleb128 0x3 # (abbrev code)
+ .uleb128 0x24 # (TAG: DW_TAG_base_type)
+ .byte 0x0 # DW_children_no
+ .uleb128 0xb # (DW_AT_byte_size)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3e # (DW_AT_encoding)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0x8 # (DW_FORM_string)
+ .byte 0x0
+ .byte 0x0
+ .uleb128 0x4 # (abbrev code)
+ .uleb128 0x2e # (TAG: DW_TAG_subprogram)
+ .byte 0x1 # DW_children_yes
+ .uleb128 0x3f # (DW_AT_external)
+ .uleb128 0xc # (DW_FORM_flag)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x3a # (DW_AT_decl_file)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3b # (DW_AT_decl_line)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x27 # (DW_AT_prototyped)
+ .uleb128 0xc # (DW_FORM_flag)
+ .uleb128 0x49 # (DW_AT_type)
+ .uleb128 0x13 # (DW_FORM_ref4)
+ .uleb128 0x11 # (DW_AT_low_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x12 # (DW_AT_high_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x40 # (DW_AT_frame_base)
+ .uleb128 0xa # (DW_FORM_block1)
+ .byte 0x0
+ .byte 0x0
+ .uleb128 0x5 # (abbrev code)
+ .uleb128 0x34 # (TAG: DW_TAG_variable)
+ .byte 0x0 # DW_children_no
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x3a # (DW_AT_decl_file)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3b # (DW_AT_decl_line)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x49 # (DW_AT_type)
+ .uleb128 0x13 # (DW_FORM_ref4)
+ .uleb128 0x2 # (DW_AT_location)
+ .uleb128 0x6 # (DW_FORM_data4)
+ .byte 0x0
+ .byte 0x0
+ .byte 0x0
+ .section .debug_pubnames,"",@progbits
+ .long 0x17 # Length of Public Names Info
+ .value 0x2 # DWARF Version
+ .long .Ldebug_info0 # Offset of Compilation Unit Info
+ .long 0xa0 # Compilation Unit Length
+ .long 0x70 # DIE offset
+ .ascii "main\0" # external name
+ .long 0x0
+ .section .debug_aranges,"",@progbits
+ .long 0x2c # Length of Address Ranges Info
+ .value 0x2 # DWARF Version
+ .long .Ldebug_info0 # Offset of Compilation Unit Info
+ .byte 0x8 # Size of Address
+ .byte 0x0 # Size of Segment Descriptor
+ .value 0x0 # Pad to 16 byte boundary
+ .value 0x0
+ .quad .Ltext0 # Address
+ .quad .Letext0-.Ltext0 # Length
+ .quad 0x0
+ .quad 0x0
+ .section .debug_str,"MS",@progbits,1
+.LASF0:
+ .string "GNU C 4.4.4 20100726 (Red Hat 4.4.4-13)"
+.LASF3:
+ .string "main"
+.LASF4:
+ .string "answer"
+.LASF2:
+ .string ""
+.LASF1:
+ .string "x86-tailcall.c"
+ .ident "GCC: (GNU) 4.4.4 20100726 (Red Hat 4.4.4-13)"
+ .section .note.GNU-stack,"",@progbits
--- /dev/null
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2013 Free Software Foundation, Inc.
+
+ Contributed by Intel Corp. <markus.t.metzger@intel.com>
+
+ This program 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.
+
+ This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
+
+static __attribute__ ((noinline)) int
+bar (void)
+{
+ return 42;
+}
+
+static __attribute__ ((noinline)) int
+foo (void)
+{
+ return bar ();
+}
+
+int
+main (void)
+{
+ int answer;
+
+ answer = foo ();
+ return ++answer;
+}
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