Don't generate .debug_line section if it isn't empty.

binutils/testsuite/

2010-07-05  H.J. Lu  <hongjiu.lu@intel.com>

	PR gas/10531
	PR gas/11789
	* binutils-all/objdump.W: Remove bogus line debug info.

gas/

2010-07-05  Jim Wilson  <wilson@codesourcery.com>

	PR gas/10531
	PR gas/11789
	* dwarf2dbg.c (dwarf2_finish): Don't generate .debug_line section
	if it isn't empty.

gas/testsuite/

2010-07-05  H.J. Lu  <hongjiu.lu@intel.com>

	PR gas/10531
	PR gas/11789
	* gas/i386/dw2-compress-1.d: Remove bogus line debug info.

	* gas/elf/dwarf2-1.d: New.
	* gas/elf/dwarf2-1.s: Likewise.
	* gas/elf/dwarf2-2.d: Likewise.
	* gas/elf/dwarf2-2.s: Likewise.
	* gas/elf/dwarf2-3.d: Likewise.
	* gas/elf/dwarf2-3.s: Likewise.
	* gas/i386/debug1.d: Likewise.
	* gas/i386/debug1.s: Likewise.

	* gas/elf/elf.exp: Run dwarf2-1, dwarf2-2 and dwarf2-3.

	* gas/i386/i386.exp: Run debug1 for both 32bit and 64bit.

14 files changed, 964 insertions, 38 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 0f90c4b..b02f315 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2010-07-05  Jim Wilson  <wilson@codesourcery.com>
+
+	PR gas/10531
+	PR gas/11789
+	* dwarf2dbg.c (dwarf2_finish): Don't generate .debug_line section
+	if it isn't empty.
+
 2010-07-05  Alan Modra  <amodra@gmail.com>
 
 	* config/tc-moxie.c (md_apply_fix): Delete set but otherwise
diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c
index 4061c72..85c1f30 100644
--- a/gas/dwarf2dbg.c
+++ b/gas/dwarf2dbg.c
@@ -1718,11 +1718,12 @@ dwarf2_init (void)
 
 /* Finish the dwarf2 debug sections.  We emit .debug.line if there
    were any .file/.loc directives, or --gdwarf2 was given, or if the
-   file has a non-empty .debug_info section.  If we emit .debug_line,
-   and the .debug_info section is empty, we also emit .debug_info,
-   .debug_aranges and .debug_abbrev.  ALL_SEGS will be non-null if
-   there were any .file/.loc directives, or --gdwarf2 was given and
-   there were any located instructions emitted.  */
+   file has a non-empty .debug_info section and an empty .debug_line
+   section.  If we emit .debug_line, and the .debug_info section is
+   empty, we also emit .debug_info, .debug_aranges and .debug_abbrev.
+   ALL_SEGS will be non-null if there were any .file/.loc directives,
+   or --gdwarf2 was given and there were any located instructions
+   emitted.  */
 
 void
 dwarf2_finish (void)
@@ -1731,13 +1732,24 @@ dwarf2_finish (void)
   struct line_seg *s;
   segT info_seg;
   int emit_other_sections = 0;
+  int empty_debug_line = 0;
 
   info_seg = bfd_get_section_by_name (stdoutput, ".debug_info");
   emit_other_sections = info_seg == NULL || !seg_not_empty_p (info_seg);
 
-  if (!all_segs && emit_other_sections)
-    /* There is no line information and no non-empty .debug_info
-       section.  */
+  line_seg = bfd_get_section_by_name (stdoutput, ".debug_line");
+  empty_debug_line = line_seg == NULL || !seg_not_empty_p (line_seg);
+
+  /* We can't construct a new debug_line section if we already have one.
+     Give an error.  */
+  if (all_segs && !empty_debug_line)
+    as_fatal ("duplicate .debug_line sections");
+
+  if ((!all_segs && emit_other_sections)
+      || (!emit_other_sections && !empty_debug_line))
+    /* If there is no line information and no non-empty .debug_info
+       section, or if there is both a non-empty .debug_info and a non-empty
+       .debug_line, then we do nothing.  */
     return;
 
   /* Calculate the size of an address for the target machine.  */
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index f518b76..fbe6d72 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,22 @@
+2010-07-05  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/10531
+	PR gas/11789
+	* gas/i386/dw2-compress-1.d: Remove bogus line debug info.
+
+	* gas/elf/dwarf2-1.d: New.
+	* gas/elf/dwarf2-1.s: Likewise.
+	* gas/elf/dwarf2-2.d: Likewise.
+	* gas/elf/dwarf2-2.s: Likewise.
+	* gas/elf/dwarf2-3.d: Likewise.
+	* gas/elf/dwarf2-3.s: Likewise.
+	* gas/i386/debug1.d: Likewise.
+	* gas/i386/debug1.s: Likewise.
+
+	* gas/elf/elf.exp: Run dwarf2-1, dwarf2-2 and dwarf2-3.
+
+	* gas/i386/i386.exp: Run debug1 for both 32bit and 64bit.
+
 2010-07-04  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* gas/i386/dw2-compress-1.d: New.
diff --git a/gas/testsuite/gas/elf/dwarf2-1.d b/gas/testsuite/gas/elf/dwarf2-1.d
new file mode 100644
index 0000000..f09d230
--- /dev/null
+++ b/gas/testsuite/gas/elf/dwarf2-1.d
@@ -0,0 +1,100 @@
+#readelf: -w
+#name: DWARF2 1
+#not-target: ia64-*-*
+
+Contents of the .debug_info section:
+
+  Compilation Unit @ offset 0x0:
+   Length:        0x4e \(32-bit\)
+   Version:       2
+   Abbrev Offset: 0
+   Pointer Size:  4
+ <0><b>: Abbrev Number: 1 \(DW_TAG_compile_unit\)
+    < c>   DW_AT_stmt_list   : 0x0	
+    <10>   DW_AT_high_pc     : 0x.	
+    <14>   DW_AT_low_pc      : 0x.	
+    <18>   DW_AT_name        : file1.txt	
+    <22>   DW_AT_producer    : GNU C 3.3.3	
+    <2e>   DW_AT_language    : 1	\(ANSI C\)
+ <1><2f>: Abbrev Number: 2 \(DW_TAG_subprogram\)
+    <30>   DW_AT_external    : 1	
+    <31>   DW_AT_decl_file   : 1	
+    <32>   DW_AT_decl_line   : 2	
+    <33>   DW_AT_name        : func_cu1	
+    <3c>   DW_AT_type        : <0x4a>	
+    <40>   DW_AT_low_pc      : 0x.	
+    <44>   DW_AT_high_pc     : 0x.	
+    <48>   DW_AT_frame_base  : 1 byte block: 55 	\(DW_OP_reg5\)
+ <1><4a>: Abbrev Number: 3 \(DW_TAG_base_type\)
+    <4b>   DW_AT_name        : int	
+    <4f>   DW_AT_byte_size   : 4	
+    <50>   DW_AT_encoding    : 5	\(signed\)
+
+Raw dump of debug contents of section .debug_line:
+
+  Offset:                      0x0
+  Length:                      62
+  DWARF Version:               2
+  Prologue Length:             35
+  Minimum Instruction Length:  1
+  Initial value of 'is_stmt':  1
+  Line Base:                   1
+  Line Range:                  1
+  Opcode Base:                 16
+
+ Opcodes:
+  Opcode 1 has 0 args
+  Opcode 2 has 1 args
+  Opcode 3 has 1 args
+  Opcode 4 has 1 args
+  Opcode 5 has 1 args
+  Opcode 6 has 0 args
+  Opcode 7 has 0 args
+  Opcode 8 has 0 args
+  Opcode 9 has 1 args
+  Opcode 10 has 0 args
+  Opcode 11 has 0 args
+  Opcode 12 has 1 args
+  Opcode 13 has 0 args
+  Opcode 14 has 0 args
+  Opcode 15 has 0 args
+
+ The Directory Table is empty.
+
+ The File Name Table:
+  Entry	Dir	Time	Size	Name
+  1	0	0	0	file1.txt
+
+ Line Number Statements:
+  Extended opcode 2: set Address to .*
+  Advance Line by 3 to 4
+  Copy
+  Copy
+  Extended opcode 2: set Address to .*
+  Extended opcode 1: End of Sequence
+
+
+Contents of the .zdebug_abbrev section:
+
+  Number TAG
+   1      DW_TAG_compile_unit    \[has children\]
+    DW_AT_stmt_list    DW_FORM_data4
+    DW_AT_high_pc      DW_FORM_addr
+    DW_AT_low_pc       DW_FORM_addr
+    DW_AT_name         DW_FORM_string
+    DW_AT_producer     DW_FORM_string
+    DW_AT_language     DW_FORM_data1
+   2      DW_TAG_subprogram    \[no children\]
+    DW_AT_external     DW_FORM_flag
+    DW_AT_decl_file    DW_FORM_data1
+    DW_AT_decl_line    DW_FORM_data1
+    DW_AT_name         DW_FORM_string
+    DW_AT_type         DW_FORM_ref4
+    DW_AT_low_pc       DW_FORM_addr
+    DW_AT_high_pc      DW_FORM_addr
+    DW_AT_frame_base   DW_FORM_block1
+   3      DW_TAG_base_type    \[no children\]
+    DW_AT_name         DW_FORM_string
+    DW_AT_byte_size    DW_FORM_data1
+    DW_AT_encoding     DW_FORM_data1
+
diff --git a/gas/testsuite/gas/elf/dwarf2-1.s b/gas/testsuite/gas/elf/dwarf2-1.s
new file mode 100644
index 0000000..0310079
--- /dev/null
+++ b/gas/testsuite/gas/elf/dwarf2-1.s
@@ -0,0 +1,219 @@
+/* This testcase is derived from a similar test in GDB.
+
+   Copyright 2009 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 tests that gdb can read compressed sections.  The contents
+   are a basic assembly file, but the .debug_abbrev section has been
+   comrpessed using zlib.  */
+
+/* Dummy function to provide debug information for.  */
+
+	.file "dwarf2-1.c"
+	.text
+	.globl _start
+_start:
+	.int 0
+.Lbegin_text1:
+	.globl func_cu1
+	.type func_cu1, %function
+func_cu1:
+.Lbegin_func_cu1:
+	.int 0
+.Lend_func_cu1:
+	.size func_cu1, .-func_cu1
+.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	"file1.txt\0"			/* DW_AT_name */
+	.ascii	"GNU C 3.3.3\0"			/* DW_AT_producer */
+	.byte	1				/* DW_AT_language (C) */
+
+	/* func_cu1 */
+	.uleb128	2			/* Abbrev: DW_TAG_subprogram */
+	.byte		1			/* DW_AT_external */
+	.byte		1			/* DW_AT_decl_file */
+	.byte		2			/* DW_AT_decl_line */
+	.ascii		"func_cu1\0"		/* DW_AT_name */
+	.4byte		.Ltype_int-.Lcu1_begin	/* DW_AT_type */
+	.4byte		.Lbegin_func_cu1	/* DW_AT_low_pc */
+	.4byte		.Lend_func_cu1		/* 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:
+
+/* 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		"file1.txt\0"
+	.uleb128	0
+	.uleb128	0
+	.uleb128	0
+
+	.byte		0
+
+.Lline1_lines:
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func_cu1
+
+	.byte		3	/* DW_LNS_advance_line */
+	.sleb128	3	/* ... to 4 */
+
+	.byte		1	/* DW_LNS_copy */
+
+	.byte		1	/* DW_LNS_copy (second time as an end-of-prologue marker) */
+
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lend_func_cu1
+
+	.byte		0	/* DW_LNE_end_of_sequence */
+	.uleb128	1
+	.byte		1
+
+.Lline1_end:
+
+/* Abbrev table -- compressed */
+	.section .zdebug_abbrev
+.Labbrev1_begin:
+	.ascii		"ZLIB"
+	.4byte		0
+	.2byte		0
+	.byte		0
+	.byte		51
+	.byte		0x78
+	.byte		0x5e
+	.byte		0x63
+	.byte		0x14
+	.byte		0x64
+	.byte		0x14
+	.byte		0x60
+	.byte		0x13
+	.byte		0x62
+	.byte		0x14
+	.byte		0x64
+	.byte		0x64
+	.byte		0xe6
+	.byte		0x50
+	.byte		0xe5
+	.byte		0x10
+	.byte		0xe6
+	.byte		0x66
+	.byte		0x60
+	.byte		0x60
+	.byte		0xd2
+	.byte		0x63
+	.byte		0xb0
+	.byte		0xe7
+	.byte		0xb1
+	.byte		0xe2
+	.byte		0xb6
+	.byte		0xe6
+	.byte		0x66
+	.byte		0xe6
+	.byte		0xf0
+	.byte		0x14
+	.byte		0x16
+	.byte		0x64
+	.byte		0x14
+	.byte		0x62
+	.byte		0x74
+	.byte		0xe0
+	.byte		0x02
+	.byte		0x00
+	.byte		0x25
+	.byte		0x78
+	.byte		0x02
+	.byte		0x81
+	.byte		0x78
+	.byte		0x9c
+	.byte		0x63
+	.byte		0x60
+	.byte		0x60
+	.byte		0x56
+	.byte		0x61
+	.byte		0x60
+	.byte		0xe6
+	.byte		0xe0
+	.byte		0xe6
+	.byte		0xb6
+	.byte		0xe3
+	.byte		0x66
+	.byte		0x00
+	.byte		0x02
+	.byte		0x00
+	.byte		0x04
+	.byte		0x9c
+	.byte		0x00
+	.byte		0x92
diff --git a/gas/testsuite/gas/elf/dwarf2-2.d b/gas/testsuite/gas/elf/dwarf2-2.d
new file mode 100644
index 0000000..de87004
--- /dev/null
+++ b/gas/testsuite/gas/elf/dwarf2-2.d
@@ -0,0 +1,100 @@
+#readelf: -w
+#name: DWARF2 2
+#not-target: ia64-*-*
+
+Contents of the .debug_info section:
+
+  Compilation Unit @ offset 0x0:
+   Length:        0x4e \(32-bit\)
+   Version:       2
+   Abbrev Offset: 0
+   Pointer Size:  4
+ <0><b>: Abbrev Number: 1 \(DW_TAG_compile_unit\)
+    < c>   DW_AT_stmt_list   : 0x0	
+    <10>   DW_AT_high_pc     : 0x.	
+    <14>   DW_AT_low_pc      : 0x.	
+    <18>   DW_AT_name        : file1.txt	
+    <22>   DW_AT_producer    : GNU C 3.3.3	
+    <2e>   DW_AT_language    : 1	\(ANSI C\)
+ <1><2f>: Abbrev Number: 2 \(DW_TAG_subprogram\)
+    <30>   DW_AT_external    : 1	
+    <31>   DW_AT_decl_file   : 1	
+    <32>   DW_AT_decl_line   : 2	
+    <33>   DW_AT_name        : func_cu1	
+    <3c>   DW_AT_type        : <0x4a>	
+    <40>   DW_AT_low_pc      : 0x.	
+    <44>   DW_AT_high_pc     : 0x.	
+    <48>   DW_AT_frame_base  : 1 byte block: 55 	\(DW_OP_reg5\)
+ <1><4a>: Abbrev Number: 3 \(DW_TAG_base_type\)
+    <4b>   DW_AT_name        : int	
+    <4f>   DW_AT_byte_size   : 4	
+    <50>   DW_AT_encoding    : 5	\(signed\)
+
+Raw dump of debug contents of section .debug_line:
+
+  Offset:                      0x0
+  Length:                      62
+  DWARF Version:               2
+  Prologue Length:             35
+  Minimum Instruction Length:  1
+  Initial value of 'is_stmt':  1
+  Line Base:                   1
+  Line Range:                  1
+  Opcode Base:                 16
+
+ Opcodes:
+  Opcode 1 has 0 args
+  Opcode 2 has 1 args
+  Opcode 3 has 1 args
+  Opcode 4 has 1 args
+  Opcode 5 has 1 args
+  Opcode 6 has 0 args
+  Opcode 7 has 0 args
+  Opcode 8 has 0 args
+  Opcode 9 has 1 args
+  Opcode 10 has 0 args
+  Opcode 11 has 0 args
+  Opcode 12 has 1 args
+  Opcode 13 has 0 args
+  Opcode 14 has 0 args
+  Opcode 15 has 0 args
+
+ The Directory Table is empty.
+
+ The File Name Table:
+  Entry	Dir	Time	Size	Name
+  1	0	0	0	file1.txt
+
+ Line Number Statements:
+  Extended opcode 2: set Address to .*
+  Advance Line by 3 to 4
+  Copy
+  Copy
+  Extended opcode 2: set Address to .*
+  Extended opcode 1: End of Sequence
+
+
+Contents of the .zdebug_abbrev section:
+
+  Number TAG
+   1      DW_TAG_compile_unit    \[has children\]
+    DW_AT_stmt_list    DW_FORM_data4
+    DW_AT_high_pc      DW_FORM_addr
+    DW_AT_low_pc       DW_FORM_addr
+    DW_AT_name         DW_FORM_string
+    DW_AT_producer     DW_FORM_string
+    DW_AT_language     DW_FORM_data1
+   2      DW_TAG_subprogram    \[no children\]
+    DW_AT_external     DW_FORM_flag
+    DW_AT_decl_file    DW_FORM_data1
+    DW_AT_decl_line    DW_FORM_data1
+    DW_AT_name         DW_FORM_string
+    DW_AT_type         DW_FORM_ref4
+    DW_AT_low_pc       DW_FORM_addr
+    DW_AT_high_pc      DW_FORM_addr
+    DW_AT_frame_base   DW_FORM_block1
+   3      DW_TAG_base_type    \[no children\]
+    DW_AT_name         DW_FORM_string
+    DW_AT_byte_size    DW_FORM_data1
+    DW_AT_encoding     DW_FORM_data1
+
diff --git a/gas/testsuite/gas/elf/dwarf2-2.s b/gas/testsuite/gas/elf/dwarf2-2.s
new file mode 100644
index 0000000..389918c
--- /dev/null
+++ b/gas/testsuite/gas/elf/dwarf2-2.s
@@ -0,0 +1,219 @@
+/* This testcase is derived from a similar test in GDB.
+
+   Copyright 2009 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 tests that gdb can read compressed sections.  The contents
+   are a basic assembly file, but the .debug_abbrev section has been
+   comrpessed using zlib.  */
+
+/* Dummy function to provide debug information for.  */
+
+	.file "dwarf2-2.c"
+	.section .gnu.linkonce.t.foo,"axG",%progbits,foo,comdat
+	.globl _start
+_start:
+	.int 0
+.Lbegin_text1:
+	.globl func_cu1
+	.type func_cu1, %function
+func_cu1:
+.Lbegin_func_cu1:
+	.int 0
+.Lend_func_cu1:
+	.size func_cu1, .-func_cu1
+.Lend_text1:
+
+/* Debug information */
+
+	.section .debug_info,"G",%progbits,foo,comdat
+.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	"file1.txt\0"			/* DW_AT_name */
+	.ascii	"GNU C 3.3.3\0"			/* DW_AT_producer */
+	.byte	1				/* DW_AT_language (C) */
+
+	/* func_cu1 */
+	.uleb128	2			/* Abbrev: DW_TAG_subprogram */
+	.byte		1			/* DW_AT_external */
+	.byte		1			/* DW_AT_decl_file */
+	.byte		2			/* DW_AT_decl_line */
+	.ascii		"func_cu1\0"		/* DW_AT_name */
+	.4byte		.Ltype_int-.Lcu1_begin	/* DW_AT_type */
+	.4byte		.Lbegin_func_cu1	/* DW_AT_low_pc */
+	.4byte		.Lend_func_cu1		/* 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:
+
+/* Line table */
+	.section .debug_line,"G",%progbits,foo,comdat
+.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		"file1.txt\0"
+	.uleb128	0
+	.uleb128	0
+	.uleb128	0
+
+	.byte		0
+
+.Lline1_lines:
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lbegin_func_cu1
+
+	.byte		3	/* DW_LNS_advance_line */
+	.sleb128	3	/* ... to 4 */
+
+	.byte		1	/* DW_LNS_copy */
+
+	.byte		1	/* DW_LNS_copy (second time as an end-of-prologue marker) */
+
+	.byte		0	/* DW_LNE_set_address */
+	.uleb128	5
+	.byte		2
+	.4byte		.Lend_func_cu1
+
+	.byte		0	/* DW_LNE_end_of_sequence */
+	.uleb128	1
+	.byte		1
+
+.Lline1_end:
+
+/* Abbrev table -- compressed */
+	.section .zdebug_abbrev,"G",%progbits,foo,comdat
+.Labbrev1_begin:
+	.ascii		"ZLIB"
+	.4byte		0
+	.2byte		0
+	.byte		0
+	.byte		51
+	.byte		0x78
+	.byte		0x5e
+	.byte		0x63
+	.byte		0x14
+	.byte		0x64
+	.byte		0x14
+	.byte		0x60
+	.byte		0x13
+	.byte		0x62
+	.byte		0x14
+	.byte		0x64
+	.byte		0x64
+	.byte		0xe6
+	.byte		0x50
+	.byte		0xe5
+	.byte		0x10
+	.byte		0xe6
+	.byte		0x66
+	.byte		0x60
+	.byte		0x60
+	.byte		0xd2
+	.byte		0x63
+	.byte		0xb0
+	.byte		0xe7
+	.byte		0xb1
+	.byte		0xe2
+	.byte		0xb6
+	.byte		0xe6
+	.byte		0x66
+	.byte		0xe6
+	.byte		0xf0
+	.byte		0x14
+	.byte		0x16
+	.byte		0x64
+	.byte		0x14
+	.byte		0x62
+	.byte		0x74
+	.byte		0xe0
+	.byte		0x02
+	.byte		0x00
+	.byte		0x25
+	.byte		0x78
+	.byte		0x02
+	.byte		0x81
+	.byte		0x78
+	.byte		0x9c
+	.byte		0x63
+	.byte		0x60
+	.byte		0x60
+	.byte		0x56
+	.byte		0x61
+	.byte		0x60
+	.byte		0xe6
+	.byte		0xe0
+	.byte		0xe6
+	.byte		0xb6
+	.byte		0xe3
+	.byte		0x66
+	.byte		0x00
+	.byte		0x02
+	.byte		0x00
+	.byte		0x04
+	.byte		0x9c
+	.byte		0x00
+	.byte		0x92
diff --git a/gas/testsuite/gas/elf/dwarf2-3.d b/gas/testsuite/gas/elf/dwarf2-3.d
new file mode 100644
index 0000000..2d8c2ac
--- /dev/null
+++ b/gas/testsuite/gas/elf/dwarf2-3.d
@@ -0,0 +1,38 @@
+#readelf: -wl
+#name: DWARF2 3
+#not-target: ia64-*-*
+
+Raw dump of debug contents of section .debug_line:
+
+  Offset:                      0x0
+  Length:                      41
+  DWARF Version:               2
+  Prologue Length:             35
+  Minimum Instruction Length:  [0-9]*
+  Initial value of 'is_stmt':  1
+  Line Base:                   -5
+  Line Range:                  14
+  Opcode Base:                 13
+
+ Opcodes:
+  Opcode 1 has 0 args
+  Opcode 2 has 1 args
+  Opcode 3 has 1 args
+  Opcode 4 has 1 args
+  Opcode 5 has 1 args
+  Opcode 6 has 0 args
+  Opcode 7 has 0 args
+  Opcode 8 has 0 args
+  Opcode 9 has 1 args
+  Opcode 10 has 0 args
+  Opcode 11 has 0 args
+  Opcode 12 has 1 args
+
+ The Directory Table is empty.
+
+ The File Name Table:
+  Entry	Dir	Time	Size	Name
+  1	0	0	0	/beginwarn.c
+
+ Line Number Statements:
+
diff --git a/gas/testsuite/gas/elf/dwarf2-3.s b/gas/testsuite/gas/elf/dwarf2-3.s
new file mode 100644
index 0000000..8c4b1e8
--- /dev/null
+++ b/gas/testsuite/gas/elf/dwarf2-3.s
@@ -0,0 +1,186 @@
+	.file	"beginwarn.c"
+	.section	.debug_abbrev,"",%progbits
+.Ldebug_abbrev0:
+	.section	.debug_info,"",%progbits
+.Ldebug_info0:
+	.section	.debug_line,"",%progbits
+.Ldebug_line0:
+	.text
+.Ltext0:
+	.section	.init_array,"aw"
+	.align 4
+	.type	init_array, %object
+	.size	init_array, 4
+init_array:
+	.long	foo
+	.section	.gnu.warning.foo,"a",%progbits
+	.type	_evoke_link_warning_foo, %object
+	.size	_evoke_link_warning_foo, 27
+_evoke_link_warning_foo:
+	.string	"function foo is deprecated"
+	.file 1 "/beginwarn.c"
+	.text
+.Letext0:
+	.section	.debug_info
+	.long	0x8a
+	.short  0x2
+	.long	.Ldebug_abbrev0
+	.byte	0x4
+	.uleb128 0x1
+	.long	.Ldebug_line0
+	.long	.Letext0
+	.long	.Ltext0
+	.long	.LASF4
+	.byte	0x1
+	.long	.LASF5
+	.uleb128 0x2
+	.long	0x31
+	.long	0x38
+	.uleb128 0x3
+	.long	0x31
+	.byte	0x1a
+	.byte	0x0
+	.uleb128 0x4
+	.long	.LASF0
+	.byte	0x4
+	.byte	0x7
+	.uleb128 0x5
+	.long	0x3d
+	.uleb128 0x4
+	.long	.LASF1
+	.byte	0x1
+	.byte	0x6
+	.uleb128 0x6
+	.long	.LASF2
+	.byte	0x1
+	.byte	0x3
+	.long	0x55
+	.byte	0x5
+	.byte	0x3
+	.long	_evoke_link_warning_foo
+	.uleb128 0x5
+	.long	0x21
+	.uleb128 0x2
+	.long	0x6a
+	.long	0x6c
+	.uleb128 0x3
+	.long	0x31
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x7
+	.byte	0x1
+	.uleb128 0x5
+	.long	0x71
+	.uleb128 0x8
+	.byte	0x4
+	.long	0x6a
+	.uleb128 0x6
+	.long	.LASF3
+	.byte	0x1
+	.byte	0x9
+	.long	0x88
+	.byte	0x5
+	.byte	0x3
+	.long	init_array
+	.uleb128 0x5
+	.long	0x5a
+	.byte	0x0
+	.section	.debug_abbrev
+	.uleb128 0x1
+	.uleb128 0x11
+	.byte	0x1
+	.uleb128 0x10
+	.uleb128 0x6
+	.uleb128 0x12
+	.uleb128 0x1
+	.uleb128 0x11
+	.uleb128 0x1
+	.uleb128 0x25
+	.uleb128 0xe
+	.uleb128 0x13
+	.uleb128 0xb
+	.uleb128 0x3
+	.uleb128 0xe
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x2
+	.uleb128 0x1
+	.byte	0x1
+	.uleb128 0x1
+	.uleb128 0x13
+	.uleb128 0x49
+	.uleb128 0x13
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x3
+	.uleb128 0x21
+	.byte	0x0
+	.uleb128 0x49
+	.uleb128 0x13
+	.uleb128 0x2f
+	.uleb128 0xb
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x4
+	.uleb128 0x24
+	.byte	0x0
+	.uleb128 0x3
+	.uleb128 0xe
+	.uleb128 0xb
+	.uleb128 0xb
+	.uleb128 0x3e
+	.uleb128 0xb
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x5
+	.uleb128 0x26
+	.byte	0x0
+	.uleb128 0x49
+	.uleb128 0x13
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x6
+	.uleb128 0x34
+	.byte	0x0
+	.uleb128 0x3
+	.uleb128 0xe
+	.uleb128 0x3a
+	.uleb128 0xb
+	.uleb128 0x3b
+	.uleb128 0xb
+	.uleb128 0x49
+	.uleb128 0x13
+	.uleb128 0x2
+	.uleb128 0xa
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x7
+	.uleb128 0x15
+	.byte	0x0
+	.uleb128 0x27
+	.uleb128 0xc
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x8
+	.uleb128 0xf
+	.byte	0x0
+	.uleb128 0xb
+	.uleb128 0xb
+	.uleb128 0x49
+	.uleb128 0x13
+	.byte	0x0
+	.byte	0x0
+	.byte	0x0
+	.section	.debug_str,"MS",%progbits,1
+.LASF5:
+	.string	"/beginwarn.c"
+.LASF0:
+	.string	"unsigned int"
+.LASF3:
+	.string	"init_array"
+.LASF2:
+	.string	"_evoke_link_warning_foo"
+.LASF4:
+	.string	"GNU C 3.4.6"
+.LASF1:
+	.string	"char"
diff --git a/gas/testsuite/gas/elf/elf.exp b/gas/testsuite/gas/elf/elf.exp
index 9771a86..b2a29aa 100644
--- a/gas/testsuite/gas/elf/elf.exp
+++ b/gas/testsuite/gas/elf/elf.exp
@@ -161,4 +161,7 @@ if { ([istarget "*-*-*elf*"]
     run_dump_test "section6" 
     run_dump_test "section7" 
     run_dump_test "section8" 
+    run_dump_test "dwarf2-1" 
+    run_dump_test "dwarf2-2" 
+    run_dump_test "dwarf2-3" 
 }
diff --git a/gas/testsuite/gas/i386/debug1.d b/gas/testsuite/gas/i386/debug1.d
new file mode 100644
index 0000000..437e38f
--- /dev/null
+++ b/gas/testsuite/gas/i386/debug1.d
@@ -0,0 +1,46 @@
+#as: --gdwarf-2
+#readelf: -wl
+#name: DWARF2 debugging information 1
+
+Raw dump of debug contents of section .debug_line:
+
+  Offset:                      0x0
+  Length:                      .*
+  DWARF Version:               2
+  Prologue Length:             .*
+  Minimum Instruction Length:  1
+  Initial value of 'is_stmt':  1
+  Line Base:                   -5
+  Line Range:                  14
+  Opcode Base:                 13
+
+ Opcodes:
+  Opcode 1 has 0 args
+  Opcode 2 has 1 args
+  Opcode 3 has 1 args
+  Opcode 4 has 1 args
+  Opcode 5 has 1 args
+  Opcode 6 has 0 args
+  Opcode 7 has 0 args
+  Opcode 8 has 0 args
+  Opcode 9 has 1 args
+  Opcode 10 has 0 args
+  Opcode 11 has 0 args
+  Opcode 12 has 1 args
+
+ The Directory Table:
+  .*
+
+ The File Name Table:
+  Entry	Dir	Time	Size	Name
+  1	1	0	0	debug1.s
+
+ Line Number Statements:
+  Extended opcode 2: set Address to 0x0
+  Special opcode 7: advance Address by 0 to 0x0 and Line by 2 to 3
+  Special opcode 20: advance Address by 1 to 0x1 and Line by 1 to 4
+  Special opcode 20: advance Address by 1 to 0x2 and Line by 1 to 5
+  Advance PC by 1 to 0x3
+  Extended opcode 1: End of Sequence
+
+
diff --git a/gas/testsuite/gas/i386/debug1.s b/gas/testsuite/gas/i386/debug1.s
new file mode 100644
index 0000000..da623af
--- /dev/null
+++ b/gas/testsuite/gas/i386/debug1.s
@@ -0,0 +1,5 @@
+	.file "debug1.s"
+	.text
+	nop
+	nop
+	nop
diff --git a/gas/testsuite/gas/i386/dw2-compress-1.d b/gas/testsuite/gas/i386/dw2-compress-1.d
index 614c7e8..1205ddf 100644
--- a/gas/testsuite/gas/i386/dw2-compress-1.d
+++ b/gas/testsuite/gas/i386/dw2-compress-1.d
@@ -98,33 +98,3 @@ Raw dump of debug contents of section .zdebug_line:
   Extended opcode 1: End of Sequence
 
 
-  Offset:                      0x42
-  Length:                      25
-  DWARF Version:               2
-  Prologue Length:             19
-  Minimum Instruction Length:  1
-  Initial value of 'is_stmt':  1
-  Line Base:                   -5
-  Line Range:                  14
-  Opcode Base:                 13
-
- Opcodes:
-  Opcode 1 has 0 args
-  Opcode 2 has 1 args
-  Opcode 3 has 1 args
-  Opcode 4 has 1 args
-  Opcode 5 has 1 args
-  Opcode 6 has 0 args
-  Opcode 7 has 0 args
-  Opcode 8 has 0 args
-  Opcode 9 has 1 args
-  Opcode 10 has 0 args
-  Opcode 11 has 0 args
-  Opcode 12 has 1 args
-
- The Directory Table is empty.
-
- The File Name Table is empty.
-
- Line Number Statements:
-
diff --git a/gas/testsuite/gas/i386/i386.exp b/gas/testsuite/gas/i386/i386.exp
index 02cde86..59ad747 100644
--- a/gas/testsuite/gas/i386/i386.exp
+++ b/gas/testsuite/gas/i386/i386.exp
@@ -212,6 +212,7 @@ if [expr ([istarget "i*86-*-*"] ||  [istarget "x86_64-*-*"]) && [gas_32_check]]
 	run_dump_test "ifunc"
 	run_list_test "l1om-inval" "-march=l1om --32"
 	run_dump_test "localpic"
+	run_dump_test "debug1"
     }
 
     # This is a PE specific test.
@@ -399,6 +400,7 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_64_check]] t
 	run_dump_test "x86-64-ifunc"
 	run_dump_test "l1om"
 	run_dump_test "x86-64-localpic"
+	run_dump_test "debug1"
     }
 
     set ASFLAGS "$old_ASFLAGS"