Resue 'z' formatter from mi register display code.

  http://sourceware.org/ml/gdb-patches/2013-07/msg00236.html

gdb/ChangeLog

        * mi/mi-main.c (output_register): Make MI 'r' format use standard
        'z' format code.  Remove error for optimized out values, standard
        code will handle these fine.

gdb/testsuite/ChangeLog

        * gdb.mi/mi-reg-undefined.exp: New file.
        * gdb.mi/mi-reg-undefined.c: Likewise.
        * gdb.mi/mi-reg-undefined.S: Likewise.

1 files changed, 521 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.mi/mi-reg-undefined.S b/gdb/testsuite/gdb.mi/mi-reg-undefined.S
new file mode 100644
index 00000000000..d3d529ad922
--- /dev/null
+++ b/gdb/testsuite/gdb.mi/mi-reg-undefined.S
@@ -0,0 +1,521 @@
+/* Copyright 2013 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/>.  */
+
+        /* The FDE entry for "stop_frame" in the .debug_frame section has
+	been hand modified to mark a set of registers as undefined.
+	Otherwise this file is as generated by gcc 4.7.2 for x86_64.  */
+	.file	"mi-reg-undefined.c"
+	.text
+.Ltext0:
+	.globl	stop_frame
+	.type	stop_frame, @function
+stop_frame:
+.LFB0:
+	.file 1 "mi-reg-undefined.c"
+	.loc 1 18 0
+	pushq	%rbp
+.LCFI0:
+	movq	%rsp, %rbp
+.LCFI1:
+	.loc 1 21 0
+	popq	%rbp
+.LCFI2:
+	ret
+.LFE0:
+	.size	stop_frame, .-stop_frame
+	.globl	first_frame
+	.type	first_frame, @function
+first_frame:
+.LFB1:
+	.loc 1 25 0
+	pushq	%rbp
+.LCFI3:
+	movq	%rsp, %rbp
+.LCFI4:
+	.loc 1 26 0
+	movl	$0, %eax
+	call	stop_frame
+	.loc 1 27 0
+	popq	%rbp
+.LCFI5:
+	ret
+.LFE1:
+	.size	first_frame, .-first_frame
+	.globl	main
+	.type	main, @function
+main:
+.LFB2:
+	.loc 1 31 0
+	pushq	%rbp
+.LCFI6:
+	movq	%rsp, %rbp
+.LCFI7:
+	.loc 1 32 0
+	movl	$0, %eax
+	call	first_frame
+	.loc 1 34 0
+	movl	$0, %eax
+	.loc 1 35 0
+	popq	%rbp
+.LCFI8:
+	ret
+.LFE2:
+	.size	main, .-main
+	.section	.debug_frame,"",@progbits
+.Lframe0:
+	.long	.LECIE0-.LSCIE0
+.LSCIE0:
+	.long	0xffffffff
+	.byte	0x1
+	.string	""
+	.uleb128 0x1
+	.sleb128 -8
+	.byte	0x10
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.byte	0x90
+	.uleb128 0x1
+	.align 8
+.LECIE0:
+        /* This FDE entry, for stop_frame was modified to mark
+           registers 0 -> 6 as being undefined.  */
+.LSFDE0:
+	.long	.LEFDE0-.LASFDE0
+.LASFDE0:
+	.long	.Lframe0
+	.quad	.LFB0
+	.quad	.LFE0-.LFB0
+
+               /* START OF NEW CONTENT.  */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x0                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x1                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x2                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x3                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x4                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x5                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x6                    /*   ULEB128 register */
+        .byte   0x7                     /* DW_CFA_undefined */
+        .uleb128 0x7                    /*   ULEB128 register */
+               /* END OF NEW CONTENT.  */
+
+	.byte	0x4
+	.long	.LCFI0-.LFB0
+	.byte	0xe
+	.uleb128 0x10
+	.byte	0x86
+	.uleb128 0x2
+	.byte	0x4
+	.long	.LCFI1-.LCFI0
+	.byte	0xd
+	.uleb128 0x6
+	.byte	0x4
+	.long	.LCFI2-.LCFI1
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.align 8
+.LEFDE0:
+.LSFDE2:
+	.long	.LEFDE2-.LASFDE2
+.LASFDE2:
+	.long	.Lframe0
+	.quad	.LFB1
+	.quad	.LFE1-.LFB1
+	.byte	0x4
+	.long	.LCFI3-.LFB1
+	.byte	0xe
+	.uleb128 0x10
+	.byte	0x86
+	.uleb128 0x2
+	.byte	0x4
+	.long	.LCFI4-.LCFI3
+	.byte	0xd
+	.uleb128 0x6
+	.byte	0x4
+	.long	.LCFI5-.LCFI4
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.align 8
+.LEFDE2:
+.LSFDE4:
+	.long	.LEFDE4-.LASFDE4
+.LASFDE4:
+	.long	.Lframe0
+	.quad	.LFB2
+	.quad	.LFE2-.LFB2
+	.byte	0x4
+	.long	.LCFI6-.LFB2
+	.byte	0xe
+	.uleb128 0x10
+	.byte	0x86
+	.uleb128 0x2
+	.byte	0x4
+	.long	.LCFI7-.LCFI6
+	.byte	0xd
+	.uleb128 0x6
+	.byte	0x4
+	.long	.LCFI8-.LCFI7
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.align 8
+.LEFDE4:
+	.section	.eh_frame,"a",@progbits
+.Lframe1:
+	.long	.LECIE1-.LSCIE1
+.LSCIE1:
+	.long	0
+	.byte	0x1
+	.string	"zR"
+	.uleb128 0x1
+	.sleb128 -8
+	.byte	0x10
+	.uleb128 0x1
+	.byte	0x3
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.byte	0x90
+	.uleb128 0x1
+	.align 8
+.LECIE1:
+.LSFDE7:
+	.long	.LEFDE7-.LASFDE7
+.LASFDE7:
+	.long	.LASFDE7-.Lframe1
+	.long	.LFB0
+	.long	.LFE0-.LFB0
+	.uleb128 0
+	.byte	0x4
+	.long	.LCFI0-.LFB0
+	.byte	0xe
+	.uleb128 0x10
+	.byte	0x86
+	.uleb128 0x2
+	.byte	0x4
+	.long	.LCFI1-.LCFI0
+	.byte	0xd
+	.uleb128 0x6
+	.byte	0x4
+	.long	.LCFI2-.LCFI1
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.align 8
+.LEFDE7:
+.LSFDE9:
+	.long	.LEFDE9-.LASFDE9
+.LASFDE9:
+	.long	.LASFDE9-.Lframe1
+	.long	.LFB1
+	.long	.LFE1-.LFB1
+	.uleb128 0
+	.byte	0x4
+	.long	.LCFI3-.LFB1
+	.byte	0xe
+	.uleb128 0x10
+	.byte	0x86
+	.uleb128 0x2
+	.byte	0x4
+	.long	.LCFI4-.LCFI3
+	.byte	0xd
+	.uleb128 0x6
+	.byte	0x4
+	.long	.LCFI5-.LCFI4
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.align 8
+.LEFDE9:
+.LSFDE11:
+	.long	.LEFDE11-.LASFDE11
+.LASFDE11:
+	.long	.LASFDE11-.Lframe1
+	.long	.LFB2
+	.long	.LFE2-.LFB2
+	.uleb128 0
+	.byte	0x4
+	.long	.LCFI6-.LFB2
+	.byte	0xe
+	.uleb128 0x10
+	.byte	0x86
+	.uleb128 0x2
+	.byte	0x4
+	.long	.LCFI7-.LCFI6
+	.byte	0xd
+	.uleb128 0x6
+	.byte	0x4
+	.long	.LCFI8-.LCFI7
+	.byte	0xc
+	.uleb128 0x7
+	.uleb128 0x8
+	.align 8
+.LEFDE11:
+	.text
+.Letext0:
+	.section	.debug_info,"",@progbits
+.Ldebug_info0:
+	.long	0x8c
+	.value	0x2
+	.long	.Ldebug_abbrev0
+	.byte	0x8
+	.uleb128 0x1
+	.long	.LASF2
+	.byte	0x1
+	.long	.LASF3
+	.long	.LASF4
+	.quad	.Ltext0
+	.quad	.Letext0
+	.long	.Ldebug_line0
+	.uleb128 0x2
+	.byte	0x1
+	.long	.LASF0
+	.byte	0x1
+	.byte	0x11
+	.quad	.LFB0
+	.quad	.LFE0
+	.long	.LLST0
+	.byte	0x1
+	.uleb128 0x3
+	.byte	0x1
+	.long	.LASF1
+	.byte	0x1
+	.byte	0x18
+	.quad	.LFB1
+	.quad	.LFE1
+	.long	.LLST1
+	.byte	0x1
+	.uleb128 0x4
+	.byte	0x1
+	.long	.LASF5
+	.byte	0x1
+	.byte	0x1e
+	.long	0x88
+	.quad	.LFB2
+	.quad	.LFE2
+	.long	.LLST2
+	.byte	0x1
+	.uleb128 0x5
+	.byte	0x4
+	.byte	0x5
+	.string	"int"
+	.byte	0
+	.section	.debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+	.uleb128 0x1
+	.uleb128 0x11
+	.byte	0x1
+	.uleb128 0x25
+	.uleb128 0xe
+	.uleb128 0x13
+	.uleb128 0xb
+	.uleb128 0x3
+	.uleb128 0xe
+	.uleb128 0x1b
+	.uleb128 0xe
+	.uleb128 0x11
+	.uleb128 0x1
+	.uleb128 0x12
+	.uleb128 0x1
+	.uleb128 0x10
+	.uleb128 0x6
+	.byte	0
+	.byte	0
+	.uleb128 0x2
+	.uleb128 0x2e
+	.byte	0
+	.uleb128 0x3f
+	.uleb128 0xc
+	.uleb128 0x3
+	.uleb128 0xe
+	.uleb128 0x3a
+	.uleb128 0xb
+	.uleb128 0x3b
+	.uleb128 0xb
+	.uleb128 0x11
+	.uleb128 0x1
+	.uleb128 0x12
+	.uleb128 0x1
+	.uleb128 0x40
+	.uleb128 0x6
+	.uleb128 0x2117
+	.uleb128 0xc
+	.byte	0
+	.byte	0
+	.uleb128 0x3
+	.uleb128 0x2e
+	.byte	0
+	.uleb128 0x3f
+	.uleb128 0xc
+	.uleb128 0x3
+	.uleb128 0xe
+	.uleb128 0x3a
+	.uleb128 0xb
+	.uleb128 0x3b
+	.uleb128 0xb
+	.uleb128 0x11
+	.uleb128 0x1
+	.uleb128 0x12
+	.uleb128 0x1
+	.uleb128 0x40
+	.uleb128 0x6
+	.uleb128 0x2116
+	.uleb128 0xc
+	.byte	0
+	.byte	0
+	.uleb128 0x4
+	.uleb128 0x2e
+	.byte	0
+	.uleb128 0x3f
+	.uleb128 0xc
+	.uleb128 0x3
+	.uleb128 0xe
+	.uleb128 0x3a
+	.uleb128 0xb
+	.uleb128 0x3b
+	.uleb128 0xb
+	.uleb128 0x49
+	.uleb128 0x13
+	.uleb128 0x11
+	.uleb128 0x1
+	.uleb128 0x12
+	.uleb128 0x1
+	.uleb128 0x40
+	.uleb128 0x6
+	.uleb128 0x2116
+	.uleb128 0xc
+	.byte	0
+	.byte	0
+	.uleb128 0x5
+	.uleb128 0x24
+	.byte	0
+	.uleb128 0xb
+	.uleb128 0xb
+	.uleb128 0x3e
+	.uleb128 0xb
+	.uleb128 0x3
+	.uleb128 0x8
+	.byte	0
+	.byte	0
+	.byte	0
+	.section	.debug_loc,"",@progbits
+.Ldebug_loc0:
+.LLST0:
+	.quad	.LFB0-.Ltext0
+	.quad	.LCFI0-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 8
+	.quad	.LCFI0-.Ltext0
+	.quad	.LCFI1-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 16
+	.quad	.LCFI1-.Ltext0
+	.quad	.LCFI2-.Ltext0
+	.value	0x2
+	.byte	0x76
+	.sleb128 16
+	.quad	.LCFI2-.Ltext0
+	.quad	.LFE0-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 8
+	.quad	0
+	.quad	0
+.LLST1:
+	.quad	.LFB1-.Ltext0
+	.quad	.LCFI3-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 8
+	.quad	.LCFI3-.Ltext0
+	.quad	.LCFI4-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 16
+	.quad	.LCFI4-.Ltext0
+	.quad	.LCFI5-.Ltext0
+	.value	0x2
+	.byte	0x76
+	.sleb128 16
+	.quad	.LCFI5-.Ltext0
+	.quad	.LFE1-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 8
+	.quad	0
+	.quad	0
+.LLST2:
+	.quad	.LFB2-.Ltext0
+	.quad	.LCFI6-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 8
+	.quad	.LCFI6-.Ltext0
+	.quad	.LCFI7-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 16
+	.quad	.LCFI7-.Ltext0
+	.quad	.LCFI8-.Ltext0
+	.value	0x2
+	.byte	0x76
+	.sleb128 16
+	.quad	.LCFI8-.Ltext0
+	.quad	.LFE2-.Ltext0
+	.value	0x2
+	.byte	0x77
+	.sleb128 8
+	.quad	0
+	.quad	0
+	.section	.debug_aranges,"",@progbits
+	.long	0x2c
+	.value	0x2
+	.long	.Ldebug_info0
+	.byte	0x8
+	.byte	0
+	.value	0
+	.value	0
+	.quad	.Ltext0
+	.quad	.Letext0-.Ltext0
+	.quad	0
+	.quad	0
+	.section	.debug_line,"",@progbits
+.Ldebug_line0:
+	.section	.debug_str,"MS",@progbits,1
+.LASF0:
+	.string	"stop_frame"
+.LASF2:
+	.string	"GNU C 4.7.2"
+.LASF3:
+	.string	"mi-reg-undefined.c"
+.LASF4:
+	.string	"/home/username/src/gdb/testsuite/gdb.mi"
+.LASF1:
+	.string	"first_frame"
+.LASF5:
+	.string	"main"
+	.ident	"GCC: (GNU) 4.7.2"
+	.section	.note.GNU-stack,"",@progbits