gdb/

	PR breakpoints/12435
	* amd64-tdep.c (amd64_skip_prologue): New variables start_pc_sal,
	next_sal, buf, offset and xmmreg.  Advance PC if it sees the PR.
	* dwarf2read.c (process_full_comp_unit): Initialize
	amd64_prologue_line_bug.
	* symtab.h (struct symtab): New field amd64_prologue_line_bug.

gdb/testsuite/
	PR breakpoints/12435
	* gdb.arch/amd64-prologue-xmm.c: New file.
	* gdb.arch/amd64-prologue-xmm.exp: New file.
	* gdb.arch/amd64-prologue-xmm.s: New file.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6861283ea2f673894817a13d0c92748848514d8c..46dc414bfb008e6f602c8c00bf11a75025da24e4 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,12 @@
+2011-09-08  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+       PR breakpoints/12435
+       * amd64-tdep.c (amd64_skip_prologue): New variables start_pc_sal,
+       next_sal, buf, offset and xmmreg.  Advance PC if it sees the PR.
+       * dwarf2read.c (process_full_comp_unit): Initialize
+       amd64_prologue_line_bug.
+       * symtab.h (struct symtab): New field amd64_prologue_line_bug.
+
 2011-09-08  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
        Fix TUI screen corruption.

diff --git a/gdb/amd64-tdep.c b/gdb/amd64-tdep.c
index 051fb13affde2b900abf8d04b7625b720390b754..14be77686b6806607ab709b7f34ddba03a7d73f4 100644 (file)
--- a/gdb/amd64-tdep.c
+++ b/gdb/amd64-tdep.c
@@ -1917,6 +1917,9 @@ amd64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
 {
   struct amd64_frame_cache cache;
   CORE_ADDR pc;
+  struct symtab_and_line start_pc_sal, next_sal;
+  gdb_byte buf[4 + 8 * 7];
+  int offset, xmmreg;
 
   amd64_init_frame_cache (&cache);
   pc = amd64_analyze_prologue (gdbarch, start_pc, 0xffffffffffffffffLL,
@@ -1924,7 +1927,71 @@ amd64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
   if (cache.frameless_p)
     return start_pc;
 
-  return pc;
+  /* GCC PR debug/48827 produced false prologue end:
+     84 c0                test   %al,%al
+     74 23                je     after
+     <-- here is 0 lines advance - the false prologue end marker.
+     0f 29 85 70 ff ff ff movaps %xmm0,-0x90(%rbp)
+     0f 29 4d 80          movaps %xmm1,-0x80(%rbp)
+     0f 29 55 90          movaps %xmm2,-0x70(%rbp)
+     0f 29 5d a0          movaps %xmm3,-0x60(%rbp)
+     0f 29 65 b0          movaps %xmm4,-0x50(%rbp)
+     0f 29 6d c0          movaps %xmm5,-0x40(%rbp)
+     0f 29 75 d0          movaps %xmm6,-0x30(%rbp)
+     0f 29 7d e0          movaps %xmm7,-0x20(%rbp)
+     after:  */
+
+  if (pc == start_pc)
+    return pc;
+
+  start_pc_sal = find_pc_sect_line (start_pc, NULL, 0);
+  if (start_pc_sal.symtab == NULL
+      || !start_pc_sal.symtab->amd64_prologue_line_bug
+      || start_pc_sal.pc != start_pc || pc >= start_pc_sal.end)
+    return pc;
+
+  next_sal = find_pc_sect_line (start_pc_sal.end, NULL, 0);
+  if (next_sal.line != start_pc_sal.line)
+    return pc;
+
+  /* START_PC can be from overlayed memory, ignored here.  */
+  if (target_read_memory (next_sal.pc - 4, buf, sizeof (buf)) != 0)
+    return pc;
+
+  /* test %al,%al */
+  if (buf[0] != 0x84 || buf[1] != 0xc0)
+    return pc;
+  /* je AFTER */
+  if (buf[2] != 0x74)
+    return pc;
+
+  offset = 4;
+  for (xmmreg = 0; xmmreg < 8; xmmreg++)
+    {
+      /* movaps %xmmreg?,-0x??(%rbp) */
+      if (buf[offset] != 0x0f || buf[offset + 1] != 0x29
+          || (buf[offset + 2] & 0b00111111) != (xmmreg << 3 | 0b101))
+       return pc;
+
+      if ((buf[offset + 2] & 0b11000000) == 0b01000000)
+       {
+         /* 8-bit displacement.  */
+         offset += 4;
+       }
+      else if ((buf[offset + 2] & 0b11000000) == 0b10000000)
+       {
+         /* 32-bit displacement.  */
+         offset += 7;
+       }
+      else
+       return pc;
+    }
+
+  /* je AFTER */
+  if (offset - 4 != buf[3])
+    return pc;
+
+  return next_sal.end;
 }
 \f
 

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 9e0a0ef15ee58b91fbdbc0e37e7971b2e8b0c543..c79f2bedd6d781405e99d7f01b0e4a75ddbd0862 100644 (file)
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -4829,6 +4829,9 @@ process_full_comp_unit (struct dwarf2_per_cu_data *per_cu)
 
       if (gcc_4_minor >= 5)
        symtab->epilogue_unwind_valid = 1;
+
+      if (gcc_4_minor >= 6)
+       symtab->amd64_prologue_line_bug = 1;
     }
 
   if (dwarf2_per_objfile->using_index)

diff --git a/gdb/symtab.h b/gdb/symtab.h
index 41a0fd6bb1edd9f7779efa4fb9471a6f38eb5d1f..eb7c53b7a1bfe5aeee010cc553b8c4b55812e1e6 100644 (file)
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -784,6 +784,11 @@ struct symtab
 
   unsigned int epilogue_unwind_valid : 1;
 
+  /* At least GCC 4.6.0 and 4.6.1 can produce invalid false prologue and marker
+     on amd64.  This flag is set independently of the symtab arch.  */
+
+  unsigned amd64_prologue_line_bug : 1;
+
   /* The macro table for this symtab.  Like the blockvector, this
      may be shared between different symtabs --- and normally is for
      all the symtabs in a given compilation unit.  */

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 98dc2b30a3ccd24ecc527fcc3dfa4c57729955a9..f130a8316bb4423de445ba5c29e164a96f932336 100644 (file)
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2011-09-08  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+       PR breakpoints/12435
+       * gdb.arch/amd64-prologue-xmm.c: New file.
+       * gdb.arch/amd64-prologue-xmm.exp: New file.
+       * gdb.arch/amd64-prologue-xmm.s: New file.
+
 2011-09-08  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
        * gdb.dwarf2/dw2-param-error-main.c: New file.

diff --git a/gdb/testsuite/gdb.arch/amd64-prologue-xmm.c b/gdb/testsuite/gdb.arch/amd64-prologue-xmm.c
new file mode 100644 (file)
index 0000000..57720e2
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-prologue-xmm.c
@@ -0,0 +1,38 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2011 Free Software Foundation, Inc.
+
+   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 volatile int v, fail;
+
+static void
+func (int i, ...)
+{
+  v = i;
+}
+
+static void
+marker (void)
+{
+}
+
+int
+main (void)
+{
+  func (1);
+  fail = 1;
+  marker ();
+  return 0;
+}

diff --git a/gdb/testsuite/gdb.arch/amd64-prologue-xmm.exp b/gdb/testsuite/gdb.arch/amd64-prologue-xmm.exp
new file mode 100644 (file)
index 0000000..2875df8
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-prologue-xmm.exp
@@ -0,0 +1,46 @@
+# Copyright 2011 Free Software Foundation, Inc.
+#
+# 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/>.
+
+# Test GCC PR debug/48827 workaround in GDB.
+
+set testfile "amd64-prologue-xmm"
+set srcfile ${testfile}.s
+set csrcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}.x
+set opts {}
+
+if [info exists COMPILE] {
+    # make check RUNTESTFLAGS='gdb.arch/amd64-prologue-xmm.exp COMPILE=1'
+    set srcfile ${csrcfile}
+    lappend opts debug optimize=-O0
+} elseif { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+    verbose "Skipping amd64-prologue-xmm test."
+    return 0
+}
+
+if {[prepare_for_testing ${testfile}.exp ${testfile} $srcfile $opts]} {
+    return -1
+}
+
+if ![runto_main] {
+    return -1
+}
+
+gdb_breakpoint "func"
+gdb_breakpoint "marker"
+
+gdb_continue_to_breakpoint "func"
+
+gdb_test "p fail" " = 0" "stopped at func"

diff --git a/gdb/testsuite/gdb.arch/amd64-prologue-xmm.s b/gdb/testsuite/gdb.arch/amd64-prologue-xmm.s
new file mode 100644 (file)
index 0000000..60e29f4
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/amd64-prologue-xmm.s
@@ -0,0 +1,400 @@
+/* This testcase is part of GDB, the GNU debugger.
+       
+   Copyright 2011 Free Software Foundation, Inc.
+
+   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 is compiled from gdb.arch/amd64-prologue-xmm.c
+   using -g -dA -S.  */
+
+       .file   "amd64-prologue-xmm.c"
+       .text
+.Ltext0:
+       .local  v
+       .comm   v,4,4
+       .local  fail
+       .comm   fail,4,4
+       .type   func, @function
+func:
+.LFB0:
+       .file 1 "gdb.arch/amd64-prologue-xmm.c"
+       # gdb.arch/amd64-prologue-xmm.c:22
+       .loc 1 22 0
+       .cfi_startproc
+       # basic block 2
+       pushq   %rbp
+       .cfi_def_cfa_offset 16
+       .cfi_offset 6, -16
+       movq    %rsp, %rbp
+       .cfi_def_cfa_register 6
+       subq    $72, %rsp
+       movq    %rsi, -168(%rbp)
+       movq    %rdx, -160(%rbp)
+       movq    %rcx, -152(%rbp)
+       movq    %r8, -144(%rbp)
+       movq    %r9, -136(%rbp)
+       testb   %al, %al
+       je      .L2
+       # basic block 3
+       # gdb.arch/amd64-prologue-xmm.c:22
+       .loc 1 22 0
+       movaps  %xmm0, -128(%rbp)
+       movaps  %xmm1, -112(%rbp)
+       movaps  %xmm2, -96(%rbp)
+       movaps  %xmm3, -80(%rbp)
+       movaps  %xmm4, -64(%rbp)
+       movaps  %xmm5, -48(%rbp)
+       movaps  %xmm6, -32(%rbp)
+       movaps  %xmm7, -16(%rbp)
+.L2:
+       # basic block 4
+       movl    %edi, -180(%rbp)
+       # gdb.arch/amd64-prologue-xmm.c:23
+       .loc 1 23 0
+       movl    -180(%rbp), %eax
+       movl    %eax, v(%rip)
+       # gdb.arch/amd64-prologue-xmm.c:24
+       .loc 1 24 0
+       leave
+       .cfi_def_cfa 7, 8
+       ret
+       .cfi_endproc
+.LFE0:
+       .size   func, .-func
+       .type   marker, @function
+marker:
+.LFB1:
+       # gdb.arch/amd64-prologue-xmm.c:28
+       .loc 1 28 0
+       .cfi_startproc
+       # basic block 2
+       pushq   %rbp
+       .cfi_def_cfa_offset 16
+       .cfi_offset 6, -16
+       movq    %rsp, %rbp
+       .cfi_def_cfa_register 6
+       # gdb.arch/amd64-prologue-xmm.c:29
+       .loc 1 29 0
+       popq    %rbp
+       .cfi_def_cfa 7, 8
+       ret
+       .cfi_endproc
+.LFE1:
+       .size   marker, .-marker
+       .globl  main
+       .type   main, @function
+main:
+.LFB2:
+       # gdb.arch/amd64-prologue-xmm.c:33
+       .loc 1 33 0
+       .cfi_startproc
+       # basic block 2
+       pushq   %rbp
+       .cfi_def_cfa_offset 16
+       .cfi_offset 6, -16
+       movq    %rsp, %rbp
+       .cfi_def_cfa_register 6
+       # gdb.arch/amd64-prologue-xmm.c:34
+       .loc 1 34 0
+       movl    $1, %edi
+       movl    $0, %eax
+       call    func
+       # gdb.arch/amd64-prologue-xmm.c:35
+       .loc 1 35 0
+       movl    $1, fail(%rip)
+       # gdb.arch/amd64-prologue-xmm.c:36
+       .loc 1 36 0
+       call    marker
+       # gdb.arch/amd64-prologue-xmm.c:37
+       .loc 1 37 0
+       movl    $0, %eax
+       # gdb.arch/amd64-prologue-xmm.c:38
+       .loc 1 38 0
+       popq    %rbp
+       .cfi_def_cfa 7, 8
+       ret
+       .cfi_endproc
+.LFE2:
+       .size   main, .-main
+.Letext0:
+       .section        .debug_info,"",@progbits
+.Ldebug_info0:
+       .long   0xc0    # Length of Compilation Unit Info
+       .value  0x4     # 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   .LASF1  # DW_AT_producer: "GNU C 4.6.1 20110715 (Red Hat 4.6.1-3)"
+       .byte   0x1     # DW_AT_language
+       .long   .LASF2  # DW_AT_name: "gdb.arch/amd64-prologue-xmm.c"
+       .long   .LASF3  # 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)
+       .long   .LASF4  # DW_AT_name: "func"
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-prologue-xmm.c)
+       .byte   0x15    # DW_AT_decl_line
+                       # DW_AT_prototyped
+       .quad   .LFB0   # DW_AT_low_pc
+       .quad   .LFE0   # DW_AT_high_pc
+       .uleb128 0x1    # DW_AT_frame_base
+       .byte   0x9c    # DW_OP_call_frame_cfa
+                       # DW_AT_GNU_all_call_sites
+       .long   0x59    # DW_AT_sibling
+       .uleb128 0x3    # (DIE (0x4a) DW_TAG_formal_parameter)
+       .ascii "i\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-prologue-xmm.c)
+       .byte   0x15    # DW_AT_decl_line
+       .long   0x59    # DW_AT_type
+       .uleb128 0x3    # DW_AT_location
+       .byte   0x91    # DW_OP_fbreg
+       .sleb128 -196
+       .uleb128 0x4    # (DIE (0x57) DW_TAG_unspecified_parameters)
+       .byte   0       # end of children of DIE 0x2d
+       .uleb128 0x5    # (DIE (0x59) DW_TAG_base_type)
+       .byte   0x4     # DW_AT_byte_size
+       .byte   0x5     # DW_AT_encoding
+       .ascii "int\0"  # DW_AT_name
+       .uleb128 0x6    # (DIE (0x60) DW_TAG_subprogram)
+       .long   .LASF5  # DW_AT_name: "marker"
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-prologue-xmm.c)
+       .byte   0x1b    # DW_AT_decl_line
+                       # DW_AT_prototyped
+       .quad   .LFB1   # DW_AT_low_pc
+       .quad   .LFE1   # DW_AT_high_pc
+       .uleb128 0x1    # DW_AT_frame_base
+       .byte   0x9c    # DW_OP_call_frame_cfa
+                       # DW_AT_GNU_all_call_sites
+       .uleb128 0x7    # (DIE (0x79) DW_TAG_subprogram)
+                       # DW_AT_external
+       .long   .LASF6  # DW_AT_name: "main"
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-prologue-xmm.c)
+       .byte   0x20    # DW_AT_decl_line
+                       # DW_AT_prototyped
+       .long   0x59    # DW_AT_type
+       .quad   .LFB2   # DW_AT_low_pc
+       .quad   .LFE2   # DW_AT_high_pc
+       .uleb128 0x1    # DW_AT_frame_base
+       .byte   0x9c    # DW_OP_call_frame_cfa
+                       # DW_AT_GNU_all_tail_call_sites
+       .uleb128 0x8    # (DIE (0x96) DW_TAG_variable)
+       .ascii "v\0"    # DW_AT_name
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-prologue-xmm.c)
+       .byte   0x12    # DW_AT_decl_line
+       .long   0xa9    # DW_AT_type
+       .uleb128 0x9    # DW_AT_location
+       .byte   0x3     # DW_OP_addr
+       .quad   v
+       .uleb128 0x9    # (DIE (0xa9) DW_TAG_volatile_type)
+       .long   0x59    # DW_AT_type
+       .uleb128 0xa    # (DIE (0xae) DW_TAG_variable)
+       .long   .LASF0  # DW_AT_name: "fail"
+       .byte   0x1     # DW_AT_decl_file (gdb.arch/amd64-prologue-xmm.c)
+       .byte   0x12    # DW_AT_decl_line
+       .long   0xa9    # DW_AT_type
+       .uleb128 0x9    # DW_AT_location
+       .byte   0x3     # DW_OP_addr
+       .quad   fail
+       .byte   0       # end of children of DIE 0xb
+       .section        .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+       .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 0x17   # (DW_FORM_sec_offset)
+       .byte   0
+       .byte   0
+       .uleb128 0x2    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0x1     # DW_children_yes
+       .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 0x19   # (DW_FORM_flag_present)
+       .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 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .uleb128 0x1    # (DW_AT_sibling)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0x3    # (abbrev code)
+       .uleb128 0x5    # (TAG: DW_TAG_formal_parameter)
+       .byte   0       # 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 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .uleb128 0x4    # (abbrev code)
+       .uleb128 0x18   # (TAG: DW_TAG_unspecified_parameters)
+       .byte   0       # DW_children_no
+       .byte   0
+       .byte   0
+       .uleb128 0x5    # (abbrev code)
+       .uleb128 0x24   # (TAG: DW_TAG_base_type)
+       .byte   0       # 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   0
+       .byte   0
+       .uleb128 0x6    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0       # 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 0x27   # (DW_AT_prototyped)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .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 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .byte   0
+       .byte   0
+       .uleb128 0x7    # (abbrev code)
+       .uleb128 0x2e   # (TAG: DW_TAG_subprogram)
+       .byte   0       # DW_children_no
+       .uleb128 0x3f   # (DW_AT_external)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .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 0x19   # (DW_FORM_flag_present)
+       .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 0x18   # (DW_FORM_exprloc)
+       .uleb128 0x2116 # (DW_AT_GNU_all_tail_call_sites)
+       .uleb128 0x19   # (DW_FORM_flag_present)
+       .byte   0
+       .byte   0
+       .uleb128 0x8    # (abbrev code)
+       .uleb128 0x34   # (TAG: DW_TAG_variable)
+       .byte   0       # 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 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .uleb128 0x2    # (DW_AT_location)
+       .uleb128 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .uleb128 0x9    # (abbrev code)
+       .uleb128 0x35   # (TAG: DW_TAG_volatile_type)
+       .byte   0       # DW_children_no
+       .uleb128 0x49   # (DW_AT_type)
+       .uleb128 0x13   # (DW_FORM_ref4)
+       .byte   0
+       .byte   0
+       .uleb128 0xa    # (abbrev code)
+       .uleb128 0x34   # (TAG: DW_TAG_variable)
+       .byte   0       # 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 0x18   # (DW_FORM_exprloc)
+       .byte   0
+       .byte   0
+       .byte   0
+       .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   0       # Size of Segment Descriptor
+       .value  0       # Pad to 16 byte boundary
+       .value  0
+       .quad   .Ltext0 # Address
+       .quad   .Letext0-.Ltext0        # Length
+       .quad   0
+       .quad   0
+       .section        .debug_line,"",@progbits
+.Ldebug_line0:
+       .section        .debug_str,"MS",@progbits,1
+.LASF3:
+       .string ""
+.LASF0:
+       .string "fail"
+.LASF4:
+       .string "func"
+.LASF1:
+       .string "GNU C 4.6.1 20110715 (Red Hat 4.6.1-3)"
+.LASF2:
+       .string "gdb.arch/amd64-prologue-xmm.c"
+.LASF5:
+       .string "marker"
+.LASF6:
+       .string "main"
+       .ident  "GCC: (GNU) 4.6.1 20110715 (Red Hat 4.6.1-3)"
+       .section        .note.GNU-stack,"",@progbits