diff mbox

[PING,v3] Bug 17394: we cannot put a break-point at a global function for ASM file

Message ID BN1PR0301MB062862BACACA081A33147E98E2650@BN1PR0301MB0628.namprd03.prod.outlook.com
State New
Headers show

Commit Message

Mihail-Marian Nistor Dec. 9, 2014, 3:02 p.m. UTC
Hello Pedro,

We need support from a maintainer to give the final approval for this patch. Can you please help us to look over this patch or recommend another maintainer to do it.

Thank you,
Mihai
-----Original Message-----
From: Nistor Mihail-MNISTOR1
Sent: Saturday, November 15, 2014 7:35 PM
To: 'gdb-patches@sourceware.org'
Cc: 'Keith Seitz'
Subject: FW:[PING] [PATCH v2] Bug 17394: we cannot put a break-point at a global function for ASM file

Dear all,

I would like to remind you that the patch attached is still pending for the final approval.
When we last exchanged messages there seemed to be no problem; has anything happened since ?
I'm looking forward to your reply.

Thank you,
Mihai

-----Original Message-----
From: Keith Seitz [mailto:keiths@redhat.com]
Sent: Tuesday, September 30, 2014 10:45 PM
To: Nistor Mihail-MNISTOR1; gdb-patches@sourceware.org
Subject: Re: [PATCH v2] Bug 17394: we cannot put a break-point at a global function for ASM file

On 09/28/2014 09:08 AM, mihail.nistor@freescale.com wrote:
> -----Original Message-----
> From: Nistor Mihail-MNISTOR1
> Sent: Sunday, September 28, 2014 6:47 PM
> To: Keith Seitz; gdb-patches@sourceware.org
> Cc: Nistor Mihail-MNISTOR1
> Subject: RE: [PATCH v2] Bug 17394: we cannot put a break-point at a 
> global function for ASM file
>
> Your changes look very well, I have one little observation regarding the filtering condition when we need to get information from minimal symbol.
> Scenario: We can mix objects that were compiled/assembled by different vendors and the third party assembler provides debug information and it doesn't have this limitation. An application may contain more than one file that have the same name. We cannot put a breakpoint at a function in all objects that have the same name if an object that comes from ASM file has debug info and is linked before the objects assembled with the GNU-GAS. In the new test case I have tried to emulate the third party assembler behavior in the break-asm-file1.s.
>

That makes sense to me. FWIW, here is a combined patch which I think a maintainer should give a final look over.

Thank you for the patch!
Keith

gdb/ChangeLog:
2014-09-30  Keith Seitz  <keiths@redhat.com>
	    Mihail-Marian Nistor  <mihail.nistor@freescale.com>

	PR gdb/17394
	* linespec.c (struct collect_minsyms): Add new member `symtab'.
	(add_minsym): Handle cases where info.symtab is non-NULL.
	(search_minsyms_for_name): Add new parameter `symtab'.
	Handle limiting searches to a specific symtab.
	(add_matching_symtabs_to_info): Search through minimal symbols
	for language_asm files for which no new symbols are found.

gdb/testsuite/ChangeLog:
2014-09-30  Mihail-Marian Nistor  <mihail.nistor@freescale.com>

       PR gdb/17394
       * gdb.linespec/break-asm-file.c: New file.
       * gdb.linespec/break-asm-file.exp: New file.
       * gdb.linespec/break-asm-file0.s: New file.
       * gdb.linespec/break-asm-file1.s: New file.
diff mbox

Patch

diff --git a/gdb/linespec.c b/gdb/linespec.c
index 8a2c8e3..bd5df70 100644
--- a/gdb/linespec.c
+++ b/gdb/linespec.c
@@ -3446,6 +3446,9 @@  struct collect_minsyms
   /* The objfile we're examining.  */
   struct objfile *objfile;
 
+  /* Only search the given symtab, or NULL to search for all symbols.  */
+  struct symtab *symtab;
+
   /* The funfirstline setting from the initial call.  */
   int funfirstline;
 
@@ -3505,6 +3508,24 @@  add_minsym (struct minimal_symbol *minsym, void *d)
   mo.minsym = minsym;
   mo.objfile = info->objfile;
 
+  if (info->symtab != NULL)
+    {
+      CORE_ADDR pc;
+      struct symtab_and_line sal;
+      struct gdbarch *gdbarch = get_objfile_arch (info->objfile);
+
+      sal = find_pc_sect_line (MSYMBOL_VALUE_ADDRESS (info->objfile, minsym),
+			       NULL, 0);
+      sal.section = MSYMBOL_OBJ_SECTION (info->objfile, minsym);
+      pc
+	= gdbarch_convert_from_func_ptr_addr (gdbarch, sal.pc, &current_target);
+      if (pc != sal.pc)
+	sal = find_pc_sect_line (pc, NULL, 0);
+
+      if (info->symtab != sal.symtab)
+	return;
+    }
+
   /* Exclude data symbols when looking for breakpoint locations.   */
   if (!info->list_mode)
     switch (minsym->type)
@@ -3531,40 +3552,59 @@  add_minsym (struct minimal_symbol *minsym, void *d)
   VEC_safe_push (bound_minimal_symbol_d, info->msyms, &mo);
 }
 
-/* Search minimal symbols in all objfiles for NAME.  If SEARCH_PSPACE
+/* Search for minimal symbols called NAME.  If SEARCH_PSPACE
    is not NULL, the search is restricted to just that program
-   space.  */
+   space.
+
+   If SYMTAB is NULL, search all objfiles, otherwise
+   restrict results to the given SYMTAB.  */
 
 static void
 search_minsyms_for_name (struct collect_info *info, const char *name,
-			 struct program_space *search_pspace)
+			 struct program_space *search_pspace,
+			 struct symtab *symtab)
 {
-  struct objfile *objfile;
-  struct program_space *pspace;
+  struct collect_minsyms local;
+  struct cleanup *cleanup;
 
-  ALL_PSPACES (pspace)
-  {
-    struct collect_minsyms local;
-    struct cleanup *cleanup;
+  memset (&local, 0, sizeof (local));
+  local.funfirstline = info->state->funfirstline;
+  local.list_mode = info->state->list_mode;
+  local.symtab = symtab;
 
-    if (search_pspace != NULL && search_pspace != pspace)
-      continue;
-    if (pspace->executing_startup)
-      continue;
+  cleanup = make_cleanup (VEC_cleanup (bound_minimal_symbol_d), &local.msyms);
 
-    set_current_program_space (pspace);
+  if (symtab == NULL)
+    {
+      struct program_space *pspace;
 
-    memset (&local, 0, sizeof (local));
-    local.funfirstline = info->state->funfirstline;
-    local.list_mode = info->state->list_mode;
+      ALL_PSPACES (pspace)
+      {
+	struct objfile *objfile;
 
-    cleanup = make_cleanup (VEC_cleanup (bound_minimal_symbol_d),
-			    &local.msyms);
+	if (search_pspace != NULL && search_pspace != pspace)
+	  continue;
+	if (pspace->executing_startup)
+	  continue;
 
-    ALL_OBJFILES (objfile)
+	set_current_program_space (pspace);
+
+	ALL_OBJFILES (objfile)
+	{
+	  local.objfile = objfile;
+	  iterate_over_minimal_symbols (objfile, name, add_minsym, &local);
+	}
+      }
+    }
+  else
     {
-      local.objfile = objfile;
-      iterate_over_minimal_symbols (objfile, name, add_minsym, &local);
+      if (search_pspace == NULL || SYMTAB_PSPACE (symtab) == search_pspace)
+	{
+	  set_current_program_space (SYMTAB_PSPACE (symtab));
+	  local.objfile = symtab->objfile;
+	  iterate_over_minimal_symbols (local.objfile, name, add_minsym,
+					&local);
+	}
     }
 
     if (!VEC_empty (bound_minimal_symbol_d, local.msyms))
@@ -3597,7 +3637,6 @@  search_minsyms_for_name (struct collect_info *info, const char *name,
       }
 
     do_cleanups (cleanup);
-  }
 }
 
 /* A helper function to add all symbols matching NAME to INFO.  If
@@ -3619,16 +3658,26 @@  add_matching_symbols_to_info (const char *name,
 	  iterate_over_all_matching_symtabs (info->state, name, VAR_DOMAIN,
 					     collect_symbols, info,
 					     pspace, 1);
-	  search_minsyms_for_name (info, name, pspace);
+	  search_minsyms_for_name (info, name, pspace, NULL);
 	}
       else if (pspace == NULL || pspace == SYMTAB_PSPACE (elt))
 	{
+	  int prev_len = VEC_length (symbolp, info->result.symbols);
+
 	  /* Program spaces that are executing startup should have
 	     been filtered out earlier.  */
 	  gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup);
 	  set_current_program_space (SYMTAB_PSPACE (elt));
 	  iterate_over_file_blocks (elt, name, VAR_DOMAIN,
 				    collect_symbols, info);
+
+	  /* If no new symbols were found in this iteration and this symtab
+	     is in assembler, we might actually be looking for a label for
+	     which we don't have debug info.  Check for a minimal symbol in
+	     this case.  */
+	  if (prev_len == VEC_length (symbolp, info->result.symbols)
+	      && elt->language == language_asm)
+	    search_minsyms_for_name (info, name, pspace, elt);
 	}
     }
 }
diff --git a/gdb/testsuite/gdb.linespec/break-asm-file.c b/gdb/testsuite/gdb.linespec/break-asm-file.c
new file mode 100644
index 0000000..525726b
--- /dev/null
+++ b/gdb/testsuite/gdb.linespec/break-asm-file.c
@@ -0,0 +1,35 @@ 
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2004-2014 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/>.  */
+
+void func3();
+void func2();
+
+static func()
+{
+}
+
+void func1()
+{
+  func3();
+  func2();
+  func();
+}
+
+int main()
+{
+  func1();
+}
diff --git a/gdb/testsuite/gdb.linespec/break-asm-file.exp b/gdb/testsuite/gdb.linespec/break-asm-file.exp
new file mode 100644
index 0000000..f1129c3
--- /dev/null
+++ b/gdb/testsuite/gdb.linespec/break-asm-file.exp
@@ -0,0 +1,55 @@ 
+# Copyright 2012-2014 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/>.
+
+# Bug 17394
+# Test for break-point at a function only for a selected ASM file.
+
+load_lib dwarf.exp 
+
+standard_testfile .c
+set execfile $testfile
+set asm_file1 break-asm-file1.s
+set asm_file0 break-asm-file0.s
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+if {![dwarf2_support]} {
+    return 0
+}
+
+if {[prepare_for_testing ${testfile}.exp $execfile \
+	 [list $srcfile $asm_file1 $asm_file0] \
+	 {debug nowarnings optimize=-O0}]} {
+    untested "Skipping ${testfile}."
+    return
+}
+
+clean_restart $execfile
+
+gdb_test "break a/$asm_file0:func" \
+    "Breakpoint 1 at 0x\[0-9a-fA-F\]+: file .*a/$asm_file0, line 7\\\." \
+    "set a break-point at a global function only for a selected ASM file."
+
+gdb_test "delete 1"
+
+gdb_test "break b/$asm_file0:func" \
+    "Breakpoint 2 at 0x\[0-9a-fA-F\]+: file .*b/$asm_file0, line 7\\\." \
+    "set a break-point at a function only for a selected ASM file."
+
+gdb_test "delete 2"
+
+gdb_test "break $asm_file0:func" \
+    "Breakpoint 3 at 0x\[0-9a-fA-F\]+: .*$asm_file0.*(2 locations).*" \
+    "set a break-point at function in all instances for a selected ASM file."
+
diff --git a/gdb/testsuite/gdb.linespec/break-asm-file0.s b/gdb/testsuite/gdb.linespec/break-asm-file0.s
new file mode 100644
index 0000000..3ac7767
--- /dev/null
+++ b/gdb/testsuite/gdb.linespec/break-asm-file0.s
@@ -0,0 +1,218 @@ 
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2004-2014 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/>.  */
+
+	.file "a/break-asm-file0.s"
+	.text
+.Lbegin_text1:
+	.globl _func2
+_func2:
+	.globl func2
+	.type func2, %function
+func2:
+.Lbegin_func2:
+	.int 0
+	.int 0
+.Lend_func2:
+	.size func2, .-func2
+	.globl _func
+_func:
+  .globl func
+	.type func, %function
+func:
+.Lbegin_func:
+	.file 1 "a/break-asm-file0.s"
+	.int 0
+	.int 0
+.Lend_func:
+	.size func, .-func
+.Lend_text1:
+
+/* Debug information */
+
+	.section .debug_info
+.Lcu1_begin:
+	/* CU header */
+	.4byte	.Lcu1_end - .Lcu1_start		/* Length of Compilation Unit */
+.Lcu1_start:
+	.2byte	2				/* DWARF Version */
+	.4byte	.Labbrev1_begin			/* Offset into abbrev section */
+	.byte	4				/* Pointer size */
+
+	/* CU die */
+	.uleb128 1				/* Abbrev: DW_TAG_compile_unit */
+	.4byte	.Lline1_begin			/* DW_AT_stmt_list */
+	.4byte	.Lend_text1			/* DW_AT_high_pc */
+	.4byte	.Lbegin_text1			/* DW_AT_low_pc */
+	.ascii	"a/break-asm-file0.s\0"			/* DW_AT_name */
+	.ascii	"GNU C 3.3.3\0"			/* DW_AT_producer */
+	.2byte	0x8001				/* DW_AT_language (Mips Assembler) */
+
+	.byte		0			/* End of children of CU */
+
+.Lcu1_end:
+
+/* Abbrev table */
+	.section .debug_abbrev
+.Labbrev1_begin:
+	.uleb128	1			/* Abbrev code */
+	.uleb128	0x11			/* DW_TAG_compile_unit */
+	.byte		1			/* has_children */
+	.uleb128	0x10			/* DW_AT_stmt_list */
+	.uleb128	0x6			/* DW_FORM_data4 */
+	.uleb128	0x12			/* DW_AT_high_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x11			/* DW_AT_low_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x25			/* DW_AT_producer */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x13			/* DW_AT_language */
+	.uleb128	0x5			/* DW_FORM_data2 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.uleb128	2			/* Abbrev code */
+	.uleb128	0x2e			/* DW_TAG_subprogram */
+	.byte		0			/* has_children */
+	.uleb128	0x3f			/* DW_AT_external */
+	.uleb128	0xc			/* DW_FORM_flag */
+	.uleb128	0x3a			/* DW_AT_decl_file */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3b			/* DW_AT_decl_line */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.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			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.uleb128	3			/* Abbrev code */
+	.uleb128	0x24			/* DW_TAG_base_type */
+	.byte		0			/* has_children */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0xb			/* DW_AT_byte_size */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3e			/* DW_AT_encoding */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+/* Line table */
+	.section .debug_line
+.Lline1_begin:
+	.4byte		.Lline1_end - .Lline1_start	/* Initial length */
+.Lline1_start:
+	.2byte		2			/* Version */
+	.4byte		.Lline1_lines - .Lline1_hdr	/* header_length */
+.Lline1_hdr:
+	.byte		1			/* Minimum insn length */
+	.byte		1			/* default_is_stmt */
+	.byte		1			/* line_base */
+	.byte		1			/* line_range */
+	.byte		0x10			/* opcode_base */
+
+	/* Standard lengths */
+	.byte		0
+	.byte		1
+	.byte		1
+	.byte		1
+	.byte		1
+	.byte		0
+	.byte		0
+	.byte		0
+	.byte		1
+	.byte		0
+	.byte		0
+	.byte		1
+	.byte		0
+	.byte		0
+	.byte		0
+
+	/* Include directories */
+	.byte		0
+
+	/* File names */
+	.ascii		"a/break-asm-file0.s\0"
+	.uleb128	0
+	.uleb128	0
+	.uleb128	0
+
+	.byte		0
+
+.Lline1_lines:
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func2
+
+	.byte		3	/* DW_LNS_advance_line */
+	.sleb128	1	/* ... to 2 */
+
+	.byte		1	/* DW_LNS_copy */
+
+  .byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func2+1
+
+	.byte		3	/* DW_LNS_advance_line */
+	.sleb128	1	/* ... to 3 */
+
+	.byte		1	/* DW_LNS_copy */
+	
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func
+
+  .byte		3	/* DW_LNS_advance_line */
+	.sleb128	4	/* ... to 7 */
+
+	.byte		1	/* DW_LNS_copy */
+
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func+2
+
+  .byte		3	/* DW_LNS_advance_line */
+	.sleb128	1	/* ... to 8 */
+
+	.byte		1	/* DW_LNS_copy */
+
+  .byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lend_func
+
+	.byte		0	/* DW_LNE_end_of_sequence */
+	.uleb128	1
+	.byte		1
+
+.Lline1_end:
diff --git a/gdb/testsuite/gdb.linespec/break-asm-file1.s b/gdb/testsuite/gdb.linespec/break-asm-file1.s
new file mode 100644
index 0000000..4375295
--- /dev/null
+++ b/gdb/testsuite/gdb.linespec/break-asm-file1.s
@@ -0,0 +1,244 @@ 
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2004-2014 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/>.  */
+
+	.text
+.Lbegin_text1:
+	.globl _func3
+_func3:
+	.globl func3
+	.type func3, %function
+func3:
+.Lbegin_func3:
+	.int 0
+	.int 0
+.Lend_func3:
+	.size func3, .-func3
+_func:
+	.type func, %function
+func:
+.Lbegin_func:
+	.int 0
+	.int 0
+.Lend_func:
+	.size func, .-func
+.Lend_text1:
+
+/* Debug information */
+
+	.section .debug_info
+.Lcu1_begin:
+	/* CU header */
+	.4byte	.Lcu1_end - .Lcu1_start		/* Length of Compilation Unit */
+.Lcu1_start:
+	.2byte	2				/* DWARF Version */
+	.4byte	.Labbrev1_begin			/* Offset into abbrev section */
+	.byte	4				/* Pointer size */
+
+	/* CU die */
+	.uleb128 1				/* Abbrev: DW_TAG_compile_unit */
+	.4byte	.Lline1_begin			/* DW_AT_stmt_list */
+	.4byte	.Lend_text1			/* DW_AT_high_pc */
+	.4byte	.Lbegin_text1			/* DW_AT_low_pc */
+	.ascii	"b/break-asm-file0.s\0"			/* DW_AT_name */
+	.ascii	"GNU C 3.3.3\0"			/* DW_AT_producer */
+	.2byte	0x8001				/* DW_AT_language (Mips Assembler) */
+
+	/* func3 */
+	.uleb128	2			/* Abbrev: DW_TAG_subprogram */
+	.byte		1			/* DW_AT_external */
+	.byte		1			/* DW_AT_decl_file */
+	.byte		2			/* DW_AT_decl_line */
+	.ascii		"func3\0"		/* DW_AT_name */
+	.4byte		.Ltype_int-.Lcu1_begin	/* DW_AT_type */
+	.4byte		.Lbegin_func3	/* DW_AT_low_pc */
+	.4byte		.Lend_func3		/* DW_AT_high_pc */
+	.byte		1			/* DW_AT_frame_base: length */
+	.byte		0x55			/* DW_AT_frame_base: DW_OP_reg5 */
+
+	/* func */
+	.uleb128	2			/* Abbrev: DW_TAG_subprogram */
+	.byte		0			/* DW_AT_external */
+	.byte		1			/* DW_AT_decl_file */
+	.byte		4			/* DW_AT_decl_line */
+	.ascii		"func\0"		/* DW_AT_name */
+	.4byte		.Ltype_int-.Lcu1_begin	/* DW_AT_type */
+	.4byte		.Lbegin_func	/* DW_AT_low_pc */
+	.4byte		.Lend_func		/* DW_AT_high_pc */
+	.byte		1			/* DW_AT_frame_base: length */
+	.byte		0x55			/* DW_AT_frame_base: DW_OP_reg5 */
+
+.Ltype_int:
+	.uleb128	3			/* Abbrev: DW_TAG_base_type */
+	.ascii		"int\0"			/* DW_AT_name */
+	.byte		4			/* DW_AT_byte_size */
+	.byte		5			/* DW_AT_encoding */
+
+	.byte		0			/* End of children of CU */
+
+.Lcu1_end:
+
+/* Abbrev table */
+	.section .debug_abbrev
+.Labbrev1_begin:
+	.uleb128	1			/* Abbrev code */
+	.uleb128	0x11			/* DW_TAG_compile_unit */
+	.byte		1			/* has_children */
+	.uleb128	0x10			/* DW_AT_stmt_list */
+	.uleb128	0x6			/* DW_FORM_data4 */
+	.uleb128	0x12			/* DW_AT_high_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x11			/* DW_AT_low_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x25			/* DW_AT_producer */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x13			/* DW_AT_language */
+	.uleb128	0x5			/* DW_FORM_data2 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.uleb128	2			/* Abbrev code */
+	.uleb128	0x2e			/* DW_TAG_subprogram */
+	.byte		0			/* has_children */
+	.uleb128	0x3f			/* DW_AT_external */
+	.uleb128	0xc			/* DW_FORM_flag */
+	.uleb128	0x3a			/* DW_AT_decl_file */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3b			/* DW_AT_decl_line */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.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			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.uleb128	3			/* Abbrev code */
+	.uleb128	0x24			/* DW_TAG_base_type */
+	.byte		0			/* has_children */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0xb			/* DW_AT_byte_size */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3e			/* DW_AT_encoding */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+/* Line table */
+	.section .debug_line
+.Lline1_begin:
+	.4byte		.Lline1_end - .Lline1_start	/* Initial length */
+.Lline1_start:
+	.2byte		2			/* Version */
+	.4byte		.Lline1_lines - .Lline1_hdr	/* header_length */
+.Lline1_hdr:
+	.byte		1			/* Minimum insn length */
+	.byte		1			/* default_is_stmt */
+	.byte		1			/* line_base */
+	.byte		1			/* line_range */
+	.byte		0x10			/* opcode_base */
+
+	/* Standard lengths */
+	.byte		0
+	.byte		1
+	.byte		1
+	.byte		1
+	.byte		1
+	.byte		0
+	.byte		0
+	.byte		0
+	.byte		1
+	.byte		0
+	.byte		0
+	.byte		1
+	.byte		0
+	.byte		0
+	.byte		0
+
+	/* Include directories */
+	.byte		0
+
+	/* File names */
+	.ascii		"b/break-asm-file0.s\0"
+	.uleb128	0
+	.uleb128	0
+	.uleb128	0
+
+	.byte		0
+
+.Lline1_lines:
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func3
+
+	.byte		3	/* DW_LNS_advance_line */
+	.sleb128	1	/* ... to 2 */
+
+	.byte		1	/* DW_LNS_copy */
+
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func3+1
+
+	.byte		3	/* DW_LNS_advance_line */
+	.sleb128	1	/* ... to 3 */
+
+	.byte		1	/* DW_LNS_copy */
+	
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func
+
+  .byte		3	/* DW_LNS_advance_line */
+	.sleb128	4	/* ... to 7 */
+
+	.byte		1	/* DW_LNS_copy */
+
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func+1
+
+  .byte		3	/* DW_LNS_advance_line */
+	.sleb128	1	/* ... to 8 */
+
+	.byte		1	/* DW_LNS_copy */
+	
+  .byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lend_func
+	
+	.byte		0	/* DW_LNE_end_of_sequence */
+	.uleb128	1
+	.byte		1
+
+.Lline1_end: