RE: [PATCH v2] Bug 17394: we cannot put a break-point at a global function for ASM file

["mihail.nistor@freescale.com" <mihail.nistor@freescale.com>]

[-- Attachment #1: Type: text/plain, Size: 2272 bytes --]

Thank you very much for your support.

You will find enclosed a new patch.

Thank you,
Mihai

-----Original Message-----
From: Joel Brobecker [mailto:brobecker@adacore.com] 
Sent: Saturday, December 13, 2014 3:04 PM
To: Keith Seitz
Cc: 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

> 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.

Overall, the patch looks good to me. Just a few trivial issues hightlighted below, but the patch is otherwise approved.

> diff --git a/gdb/testsuite/gdb.linespec/break-asm-file.exp 
> b/gdb/testsuite/gdb.linespec/break-asm-file.exp
> +
> +load_lib dwarf.exp

Trailing space here...

> diff --git a/gdb/testsuite/gdb.linespec/break-asm-file0.s 
> b/gdb/testsuite/gdb.linespec/break-asm-file0.s
[...]
> @@ -0,0 +1,218 @@
> +	.byte		1	/* DW_LNS_copy */
> +
> +  .byte		0	/* DW_LNE_set_address */

This file has a few .byte's where the formatting is inconsistent with the rest. Not critical, but would you mind fixing those?


> +	.byte		1	/* DW_LNS_copy */
> +	

Trailing spaces...


> diff --git a/gdb/testsuite/gdb.linespec/break-asm-file1.s 
> b/gdb/testsuite/gdb.linespec/break-asm-file1.s
[...]
> +	.byte		1	/* DW_LNS_copy */
> +	

Trailing spaces again...

> +	.byte		1	/* DW_LNS_copy */
> +	
Ditto...

> +	.4byte		.Lend_func
> +	

... and Ditto.

Thank you,
--
Joel

[-- Attachment #2: 17394_v3.patch --]
[-- Type: application/octet-stream, Size: 20543 bytes --]

diff --git a/gdb/linespec.c b/gdb/linespec.c
index 82384ca..e1bd9b2 100644
--- a/gdb/linespec.c
+++ b/gdb/linespec.c
@@ -3448,6 +3448,9 @@ 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;
 
@@ -3507,6 +3510,24 @@ 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)
@@ -3533,40 +3554,59 @@ 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))
@@ -3599,7 +3639,6 @@ 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
@@ -3621,16 +3660,26 @@ 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..de1ed19
--- /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..4d1176c
--- /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..36bcb86
--- /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: