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gdb/gdb-bz589467-pieces3of4.patch
Jan Kratochvil ee681d3b2f - Rebuild for Fedora 14.
2010-07-11 18:06:33 +00:00

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http://sourceware.org/ml/gdb-cvs/2010-05/msg00190.html
### src/gdb/ChangeLog 2010/05/21 20:56:48 1.11831
### src/gdb/ChangeLog 2010/05/21 21:01:46 1.11832
## -1,5 +1,16 @@
2010-05-21 Tom Tromey <tromey@redhat.com>
+ * dwarf2loc.c (read_pieced_value): Exit loop when result is full.
+ <DWARF_VALUE_OPTIMIZED_OUT>: New case.
+ * dwarf2expr.h (enum dwarf_value_location)
+ <DWARF_VALUE_OPTIMIZED_OUT>: New constant.
+ * dwarf2expr.c (dwarf_expr_stack_empty_p): New function.
+ (add_piece): Handle empty piece.
+ (execute_stack_op) <DW_OP_piece>: Handle
+ DWARF_VALUE_OPTIMIZED_OUT.
+
### src/gdb/testsuite/ChangeLog 2010/05/21 20:56:49 1.2274
### src/gdb/testsuite/ChangeLog 2010/05/21 21:01:46 1.2275
## -1,5 +1,13 @@
2010-05-21 Tom Tromey <tromey@redhat.com>
+ * gdb.dwarf2/pieces.exp (pieces_test_f6): New proc.
+ Call it.
+ * gdb.dwarf2/pieces.c (struct C): New.
+ (f6): New function.
+ * gdb.dwarf2/pieces.S: Replace.
+
--- src/gdb/dwarf2expr.c 2010/05/14 17:53:16 1.42
+++ src/gdb/dwarf2expr.c 2010/05/21 21:01:46 1.43
@@ -143,6 +143,14 @@
}
+/* Return true if the expression stack is empty. */
+
+static int
+dwarf_expr_stack_empty_p (struct dwarf_expr_context *ctx)
+{
+ return ctx->stack_len == 0;
+}
+
/* Add a new piece to CTX's piece list. */
static void
add_piece (struct dwarf_expr_context *ctx, ULONGEST size)
@@ -167,6 +175,15 @@
p->v.literal.data = ctx->data;
p->v.literal.length = ctx->len;
}
+ else if (dwarf_expr_stack_empty_p (ctx))
+ {
+ p->location = DWARF_VALUE_OPTIMIZED_OUT;
+ /* Also reset the context's location, for our callers. This is
+ a somewhat strange approach, but this lets us avoid setting
+ the location to DWARF_VALUE_MEMORY in all the individual
+ cases in the evaluator. */
+ ctx->location = DWARF_VALUE_OPTIMIZED_OUT;
+ }
else
{
p->v.expr.value = dwarf_expr_fetch (ctx, 0);
@@ -859,7 +876,8 @@
/* Pop off the address/regnum, and reset the location
type. */
- if (ctx->location != DWARF_VALUE_LITERAL)
+ if (ctx->location != DWARF_VALUE_LITERAL
+ && ctx->location != DWARF_VALUE_OPTIMIZED_OUT)
dwarf_expr_pop (ctx);
ctx->location = DWARF_VALUE_MEMORY;
}
--- src/gdb/dwarf2expr.h 2010/01/01 07:31:30 1.20
+++ src/gdb/dwarf2expr.h 2010/05/21 21:01:46 1.21
@@ -38,7 +38,10 @@
DWARF_VALUE_STACK,
/* The piece is a literal. */
- DWARF_VALUE_LITERAL
+ DWARF_VALUE_LITERAL,
+
+ /* The piece was optimized out. */
+ DWARF_VALUE_OPTIMIZED_OUT
};
/* The dwarf expression stack. */
--- src/gdb/dwarf2loc.c 2010/05/21 20:39:50 1.79
+++ src/gdb/dwarf2loc.c 2010/05/21 21:01:46 1.80
@@ -384,6 +384,16 @@
}
break;
+ case DWARF_VALUE_OPTIMIZED_OUT:
+ /* We just leave the bits empty for now. This is not ideal
+ but gdb currently does not have a nice way to represent
+ optimized-out pieces. */
+ warning (_("bytes %ld-%ld in computed object were optimized out; "
+ "replacing with zeroes"),
+ offset,
+ offset + (long) this_size);
+ break;
+
default:
internal_error (__FILE__, __LINE__, _("invalid location type"));
}
@@ -609,6 +619,9 @@
}
break;
+ /* DWARF_VALUE_OPTIMIZED_OUT can't occur in this context --
+ it can only be encountered when making a piece. */
+ case DWARF_VALUE_OPTIMIZED_OUT:
default:
internal_error (__FILE__, __LINE__, _("invalid location type"));
}
--- src/gdb/testsuite/gdb.dwarf2/pieces.S 2010/05/21 20:39:50 1.1
+++ src/gdb/testsuite/gdb.dwarf2/pieces.S 2010/05/21 21:01:46 1.2
@@ -37,19 +37,19 @@
bar:
.LFB0:
.file 1 "pieces.c"
- # pieces.c:28
- .loc 1 28 0
+ # pieces.c:29
+ .loc 1 29 0
.LVL0:
# basic block 2
pushl %ebp
.LCFI0:
movl %esp, %ebp
.LCFI1:
- # pieces.c:29
- .loc 1 29 0
- movl 8(%ebp), %eax
# pieces.c:30
.loc 1 30 0
+ movl 8(%ebp), %eax
+ # pieces.c:31
+ .loc 1 31 0
popl %ebp
.LCFI2:
ret
@@ -60,8 +60,8 @@
.type f1, @function
f1:
.LFB1:
- # pieces.c:34
- .loc 1 34 0
+ # pieces.c:35
+ .loc 1 35 0
.LVL1:
# basic block 2
pushl %ebp
@@ -73,36 +73,36 @@
.LCFI5:
movl %esi, -4(%ebp)
.LCFI6:
- # pieces.c:37
- .loc 1 37 0
+ # pieces.c:38
+ .loc 1 38 0
movl 8(%ebp), %esi
- # pieces.c:34
- .loc 1 34 0
+ # pieces.c:35
+ .loc 1 35 0
movl %ebx, -8(%ebp)
.LCFI7:
- # pieces.c:36
- .loc 1 36 0
+ # pieces.c:37
+ .loc 1 37 0
movl $4, %ebx
.LVL3:
+ # pieces.c:39
+ .loc 1 39 0
+ movl %ebx, (%esp)
# pieces.c:38
.loc 1 38 0
- movl %ebx, (%esp)
- # pieces.c:37
- .loc 1 37 0
addl $7, %esi
.LVL4:
- # pieces.c:38
- .loc 1 38 0
- call bar
# pieces.c:39
.loc 1 39 0
- movl %esi, (%esp)
call bar
# pieces.c:40
.loc 1 40 0
- leal (%ebx,%esi), %eax
+ movl %esi, (%esp)
+ call bar
# pieces.c:41
.loc 1 41 0
+ leal (%ebx,%esi), %eax
+ # pieces.c:42
+ .loc 1 42 0
movl -8(%ebp), %ebx
.LVL5:
movl -4(%ebp), %esi
@@ -119,8 +119,8 @@
.type f2, @function
f2:
.LFB2:
- # pieces.c:45
- .loc 1 45 0
+ # pieces.c:46
+ .loc 1 46 0
.LVL7:
# basic block 2
pushl %ebp
@@ -132,36 +132,36 @@
.LCFI12:
movl %esi, -4(%ebp)
.LCFI13:
- # pieces.c:48
- .loc 1 48 0
+ # pieces.c:49
+ .loc 1 49 0
movl 8(%ebp), %esi
- # pieces.c:45
- .loc 1 45 0
+ # pieces.c:46
+ .loc 1 46 0
movl %ebx, -8(%ebp)
.LCFI14:
- # pieces.c:47
- .loc 1 47 0
+ # pieces.c:48
+ .loc 1 48 0
movl $4, %ebx
.LVL9:
+ # pieces.c:50
+ .loc 1 50 0
+ movl %ebx, (%esp)
# pieces.c:49
.loc 1 49 0
- movl %ebx, (%esp)
- # pieces.c:48
- .loc 1 48 0
addl $7, %esi
.LVL10:
- # pieces.c:49
- .loc 1 49 0
- call bar
# pieces.c:50
.loc 1 50 0
- movl %esi, (%esp)
call bar
# pieces.c:51
.loc 1 51 0
- leal (%ebx,%esi), %eax
+ movl %esi, (%esp)
+ call bar
# pieces.c:52
.loc 1 52 0
+ leal (%ebx,%esi), %eax
+ # pieces.c:53
+ .loc 1 53 0
movl -8(%ebp), %ebx
.LVL11:
movl -4(%ebp), %esi
@@ -178,59 +178,59 @@
.type f3, @function
f3:
.LFB3:
- # pieces.c:56
- .loc 1 56 0
+ # pieces.c:57
+ .loc 1 57 0
.LVL13:
# basic block 2
pushl %ebp
.LCFI17:
- # pieces.c:58
- .loc 1 58 0
+ # pieces.c:59
+ .loc 1 59 0
movl $4, %edx
- # pieces.c:56
- .loc 1 56 0
+ # pieces.c:57
+ .loc 1 57 0
movl %esp, %ebp
.LCFI18:
.LVL14:
subl $12, %esp
.LCFI19:
- # pieces.c:58
- .loc 1 58 0
+ # pieces.c:59
+ .loc 1 59 0
.LVL15:
- # pieces.c:56
- .loc 1 56 0
+ # pieces.c:57
+ .loc 1 57 0
movl %esi, -4(%ebp)
.LCFI20:
- # pieces.c:60
- .loc 1 60 0
+ # pieces.c:61
+ .loc 1 61 0
movswl %dx, %esi
- # pieces.c:56
- .loc 1 56 0
+ # pieces.c:57
+ .loc 1 57 0
movl %ebx, -8(%ebp)
.LCFI21:
- # pieces.c:60
- .loc 1 60 0
+ # pieces.c:61
+ .loc 1 61 0
movl %esi, (%esp)
call bar
.LVL16:
- # pieces.c:57
- .loc 1 57 0
+ # pieces.c:58
+ .loc 1 58 0
movl 8(%ebp), %edx
sall $4, %edx
- # pieces.c:59
- .loc 1 59 0
+ # pieces.c:60
+ .loc 1 60 0
addl $112, %edx
sarw $4, %dx
- # pieces.c:61
- .loc 1 61 0
+ # pieces.c:62
+ .loc 1 62 0
movswl %dx, %ebx
movl %ebx, (%esp)
call bar
- # pieces.c:62
- .loc 1 62 0
- leal (%esi,%ebx), %eax
# pieces.c:63
.loc 1 63 0
+ leal (%esi,%ebx), %eax
+ # pieces.c:64
+ .loc 1 64 0
movl -8(%ebp), %ebx
movl -4(%ebp), %esi
.LVL17:
@@ -246,8 +246,8 @@
.type f4, @function
f4:
.LFB4:
- # pieces.c:67
- .loc 1 67 0
+ # pieces.c:68
+ .loc 1 68 0
.LVL18:
# basic block 2
pushl %ebp
@@ -262,28 +262,28 @@
.LVL19:
movl %ebx, -8(%ebp)
.LCFI28:
- # pieces.c:69
- .loc 1 69 0
- movl %esi, %ebx
# pieces.c:70
.loc 1 70 0
- addl $1, %esi
- # pieces.c:69
- .loc 1 69 0
-.LVL20:
+ movl %esi, %ebx
# pieces.c:71
.loc 1 71 0
- movl %ebx, (%esp)
- call bar
+ addl $1, %esi
+ # pieces.c:70
+ .loc 1 70 0
+.LVL20:
# pieces.c:72
.loc 1 72 0
- movl %esi, (%esp)
+ movl %ebx, (%esp)
call bar
# pieces.c:73
.loc 1 73 0
- leal (%ebx,%esi), %eax
+ movl %esi, (%esp)
+ call bar
# pieces.c:74
.loc 1 74 0
+ leal (%ebx,%esi), %eax
+ # pieces.c:75
+ .loc 1 75 0
movl -8(%ebp), %ebx
.LVL21:
movl -4(%ebp), %esi
@@ -300,8 +300,8 @@
.type f5, @function
f5:
.LFB5:
- # pieces.c:78
- .loc 1 78 0
+ # pieces.c:79
+ .loc 1 79 0
.LVL23:
# basic block 2
pushl %ebp
@@ -316,28 +316,28 @@
.LVL24:
movl %ebx, -8(%ebp)
.LCFI35:
- # pieces.c:80
- .loc 1 80 0
- movl %esi, %ebx
# pieces.c:81
.loc 1 81 0
- addl $1, %esi
- # pieces.c:80
- .loc 1 80 0
-.LVL25:
+ movl %esi, %ebx
# pieces.c:82
.loc 1 82 0
- movl %ebx, (%esp)
- call bar
+ addl $1, %esi
+ # pieces.c:81
+ .loc 1 81 0
+.LVL25:
# pieces.c:83
.loc 1 83 0
- movl %esi, (%esp)
+ movl %ebx, (%esp)
call bar
# pieces.c:84
.loc 1 84 0
- leal (%ebx,%esi), %eax
+ movl %esi, (%esp)
+ call bar
# pieces.c:85
.loc 1 85 0
+ leal (%ebx,%esi), %eax
+ # pieces.c:86
+ .loc 1 86 0
movl -8(%ebp), %ebx
.LVL26:
movl -4(%ebp), %esi
@@ -350,60 +350,118 @@
.LFE5:
.size f5, .-f5
.p2align 4,,15
-.globl main
- .type main, @function
-main:
+.globl f6
+ .type f6, @function
+f6:
.LFB6:
- # pieces.c:89
- .loc 1 89 0
+ # pieces.c:90
+ .loc 1 90 0
+.LVL28:
# basic block 2
pushl %ebp
.LCFI38:
movl %esp, %ebp
.LCFI39:
- pushl %ebx
+ subl $12, %esp
.LCFI40:
- # pieces.c:91
- .loc 1 91 0
- movl $7, %ebx
- # pieces.c:89
- .loc 1 89 0
- subl $4, %esp
+ movl %esi, -4(%ebp)
.LCFI41:
- # pieces.c:91
- .loc 1 91 0
-.LVL28:
- # pieces.c:92
- .loc 1 92 0
- movl %ebx, (%esp)
- call f1
+ movl 8(%ebp), %esi
+.LVL29:
+ movl %ebx, -8(%ebp)
+.LCFI42:
# pieces.c:93
.loc 1 93 0
- movl %ebx, (%esp)
- call f2
+ movl %esi, %ebx
# pieces.c:94
.loc 1 94 0
- movl %ebx, (%esp)
- call f3
+ addl $1, %esi
+ # pieces.c:93
+ .loc 1 93 0
+.LVL30:
# pieces.c:95
.loc 1 95 0
movl %ebx, (%esp)
- call f4
+ call bar
# pieces.c:96
.loc 1 96 0
- movl %ebx, (%esp)
- call f5
+ movl %esi, (%esp)
+ call bar
+ # pieces.c:97
+ .loc 1 97 0
+ leal (%ebx,%esi), %eax
# pieces.c:98
.loc 1 98 0
+ movl -8(%ebp), %ebx
+.LVL31:
+ movl -4(%ebp), %esi
+.LVL32:
+ movl %ebp, %esp
+.LCFI43:
+ popl %ebp
+.LCFI44:
+ ret
+.LFE6:
+ .size f6, .-f6
+ .p2align 4,,15
+.globl main
+ .type main, @function
+main:
+.LFB7:
+ # pieces.c:102
+ .loc 1 102 0
+ # basic block 2
+ pushl %ebp
+.LCFI45:
+ movl %esp, %ebp
+.LCFI46:
+ pushl %ebx
+.LCFI47:
+ # pieces.c:104
+ .loc 1 104 0
+ movl $7, %ebx
+ # pieces.c:102
+ .loc 1 102 0
+ subl $4, %esp
+.LCFI48:
+ # pieces.c:104
+ .loc 1 104 0
+.LVL33:
+ # pieces.c:105
+ .loc 1 105 0
+ movl %ebx, (%esp)
+ call f1
+ # pieces.c:106
+ .loc 1 106 0
+ movl %ebx, (%esp)
+ call f2
+ # pieces.c:107
+ .loc 1 107 0
+ movl %ebx, (%esp)
+ call f3
+ # pieces.c:108
+ .loc 1 108 0
+ movl %ebx, (%esp)
+ call f4
+ # pieces.c:109
+ .loc 1 109 0
+ movl %ebx, (%esp)
+ call f5
+ # pieces.c:110
+ .loc 1 110 0
+ movl %ebx, (%esp)
+ call f6
+ # pieces.c:112
+ .loc 1 112 0
addl $4, %esp
xorl %eax, %eax
popl %ebx
-.LCFI42:
-.LVL29:
+.LCFI49:
+.LVL34:
popl %ebp
-.LCFI43:
+.LCFI50:
ret
-.LFE6:
+.LFE7:
.size main, .-main
#APP
.section .debug_frame,"",@progbits
@@ -649,20 +707,57 @@
.byte 0xd # DW_CFA_def_cfa_register
.uleb128 0x5
.byte 0x4 # DW_CFA_advance_loc4
- .long .LCFI40-.LCFI39
+ .long .LCFI41-.LCFI39
+ .byte 0x86 # DW_CFA_offset, column 0x6
+ .uleb128 0x3
+ .byte 0x4 # DW_CFA_advance_loc4
+ .long .LCFI42-.LCFI41
+ .byte 0x83 # DW_CFA_offset, column 0x3
+ .uleb128 0x4
+ .byte 0x4 # DW_CFA_advance_loc4
+ .long .LCFI43-.LCFI42
+ .byte 0xd # DW_CFA_def_cfa_register
+ .uleb128 0x4
+ .byte 0xc6 # DW_CFA_restore, column 0x6
+ .byte 0xc3 # DW_CFA_restore, column 0x3
+ .byte 0x4 # DW_CFA_advance_loc4
+ .long .LCFI44-.LCFI43
+ .byte 0xc5 # DW_CFA_restore, column 0x5
+ .byte 0xe # DW_CFA_def_cfa_offset
+ .uleb128 0x4
+ .align 4
+.LEFDE12:
+.LSFDE14:
+ .long .LEFDE14-.LASFDE14 # FDE Length
+.LASFDE14:
+ .long .Lframe0 # FDE CIE offset
+ .long .LFB7 # FDE initial location
+ .long .LFE7-.LFB7 # FDE address range
+ .byte 0x4 # DW_CFA_advance_loc4
+ .long .LCFI45-.LFB7
+ .byte 0xe # DW_CFA_def_cfa_offset
+ .uleb128 0x8
+ .byte 0x85 # DW_CFA_offset, column 0x5
+ .uleb128 0x2
+ .byte 0x4 # DW_CFA_advance_loc4
+ .long .LCFI46-.LCFI45
+ .byte 0xd # DW_CFA_def_cfa_register
+ .uleb128 0x5
+ .byte 0x4 # DW_CFA_advance_loc4
+ .long .LCFI47-.LCFI46
.byte 0x83 # DW_CFA_offset, column 0x3
.uleb128 0x3
.byte 0x4 # DW_CFA_advance_loc4
- .long .LCFI42-.LCFI40
+ .long .LCFI49-.LCFI47
.byte 0xc3 # DW_CFA_restore, column 0x3
.byte 0x4 # DW_CFA_advance_loc4
- .long .LCFI43-.LCFI42
+ .long .LCFI50-.LCFI49
.byte 0xc5 # DW_CFA_restore, column 0x5
.byte 0xc # DW_CFA_def_cfa
.uleb128 0x4
.uleb128 0x4
.align 4
-.LEFDE12:
+.LEFDE14:
#NO_APP
.text
.Letext0:
@@ -1130,6 +1225,11 @@
.byte 0x75 # DW_OP_breg5
.sleb128 8
.long .LCFI43-.Ltext0 # Location list begin address (*.LLST11)
+ .long .LCFI44-.Ltext0 # Location list end address (*.LLST11)
+ .value 0x2 # Location expression size
+ .byte 0x74 # DW_OP_breg4
+ .sleb128 8
+ .long .LCFI44-.Ltext0 # Location list begin address (*.LLST11)
.long .LFE6-.Ltext0 # Location list end address (*.LLST11)
.value 0x2 # Location expression size
.byte 0x74 # DW_OP_breg4
@@ -1137,14 +1237,74 @@
.long 0 # Location list terminator begin (*.LLST11)
.long 0 # Location list terminator end (*.LLST11)
.LLST12:
- .long .LVL28-.Ltext0 # Location list begin address (*.LLST12)
- .long .LVL29-.Ltext0 # Location list end address (*.LLST12)
- .value 0x1 # Location expression size
+ .long .LVL29-.Ltext0 # Location list begin address (*.LLST12)
+ .long .LVL30-.Ltext0 # Location list end address (*.LLST12)
+ .value 0xa # Location expression size
+ .byte 0x91 # DW_OP_fbreg
+ .sleb128 0
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .byte 0x91 # DW_OP_fbreg
+ .sleb128 0
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .long .LVL30-.Ltext0 # Location list begin address (*.LLST12)
+ .long .LVL31-.Ltext0 # Location list end address (*.LLST12)
+ .value 0x8 # Location expression size
.byte 0x53 # DW_OP_reg3
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .byte 0x56 # DW_OP_reg6
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .long .LVL31-.Ltext0 # Location list begin address (*.LLST12)
+ .long .LVL32-.Ltext0 # Location list end address (*.LLST12)
+ .value 0x7 # Location expression size
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .byte 0x56 # DW_OP_reg6
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
+ .byte 0x93 # DW_OP_piece
+ .uleb128 0x4
.long 0 # Location list terminator begin (*.LLST12)
.long 0 # Location list terminator end (*.LLST12)
+.LLST13:
+ .long .LFB7-.Ltext0 # Location list begin address (*.LLST13)
+ .long .LCFI45-.Ltext0 # Location list end address (*.LLST13)
+ .value 0x2 # Location expression size
+ .byte 0x74 # DW_OP_breg4
+ .sleb128 4
+ .long .LCFI45-.Ltext0 # Location list begin address (*.LLST13)
+ .long .LCFI46-.Ltext0 # Location list end address (*.LLST13)
+ .value 0x2 # Location expression size
+ .byte 0x74 # DW_OP_breg4
+ .sleb128 8
+ .long .LCFI46-.Ltext0 # Location list begin address (*.LLST13)
+ .long .LCFI50-.Ltext0 # Location list end address (*.LLST13)
+ .value 0x2 # Location expression size
+ .byte 0x75 # DW_OP_breg5
+ .sleb128 8
+ .long .LCFI50-.Ltext0 # Location list begin address (*.LLST13)
+ .long .LFE7-.Ltext0 # Location list end address (*.LLST13)
+ .value 0x2 # Location expression size
+ .byte 0x74 # DW_OP_breg4
+ .sleb128 4
+ .long 0 # Location list terminator begin (*.LLST13)
+ .long 0 # Location list terminator end (*.LLST13)
+.LLST14:
+ .long .LVL33-.Ltext0 # Location list begin address (*.LLST14)
+ .long .LVL34-.Ltext0 # Location list end address (*.LLST14)
+ .value 0x1 # Location expression size
+ .byte 0x53 # DW_OP_reg3
+ .long 0 # Location list terminator begin (*.LLST14)
+ .long 0 # Location list terminator end (*.LLST14)
.section .debug_info
- .long 0x1e3 # Length of Compilation Unit Info
+ .long 0x252 # Length of Compilation Unit Info
.value 0x2 # DWARF version number
.long .Ldebug_abbrev0 # Offset Into Abbrev. Section
.byte 0x4 # Pointer Size (in bytes)
@@ -1212,182 +1372,245 @@
.byte 0x23 # DW_OP_plus_uconst
.uleb128 0
.byte 0 # end of children of DIE 0x4f
- .uleb128 0x6 # (DIE (0x78) DW_TAG_subprogram)
+ .uleb128 0x2 # (DIE (0x78) DW_TAG_structure_type)
+ .ascii "C\0" # DW_AT_name
+ .byte 0xc # DW_AT_byte_size
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x19 # DW_AT_decl_line
+ .long 0xa7 # DW_AT_sibling
+ .uleb128 0x3 # (DIE (0x82) DW_TAG_member)
+ .ascii "i\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x19 # DW_AT_decl_line
+ .long 0x48 # DW_AT_type
+ .byte 0x2 # DW_AT_data_member_location
+ .byte 0x23 # DW_OP_plus_uconst
+ .uleb128 0
+ .uleb128 0x3 # (DIE (0x8e) DW_TAG_member)
+ .ascii "j\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x19 # DW_AT_decl_line
+ .long 0x48 # DW_AT_type
+ .byte 0x2 # DW_AT_data_member_location
+ .byte 0x23 # DW_OP_plus_uconst
+ .uleb128 0x4
+ .uleb128 0x3 # (DIE (0x9a) DW_TAG_member)
+ .ascii "q\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x19 # DW_AT_decl_line
+ .long 0x48 # DW_AT_type
+ .byte 0x2 # DW_AT_data_member_location
+ .byte 0x23 # DW_OP_plus_uconst
+ .uleb128 0x8
+ .byte 0 # end of children of DIE 0x78
+ .uleb128 0x6 # (DIE (0xa7) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
.ascii "bar\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x1b # DW_AT_decl_line
+ .byte 0x1c # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long .LFB0 # DW_AT_low_pc
.long .LFE0 # DW_AT_high_pc
.long .LLST0 # DW_AT_frame_base
- .long 0x9e # DW_AT_sibling
- .uleb128 0x7 # (DIE (0x91) DW_TAG_formal_parameter)
+ .long 0xcd # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0xc0) DW_TAG_formal_parameter)
.ascii "x\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x1b # DW_AT_decl_line
+ .byte 0x1c # DW_AT_decl_line
.long 0x48 # DW_AT_type
.byte 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 0
- .byte 0 # end of children of DIE 0x78
- .uleb128 0x8 # (DIE (0x9e) DW_TAG_subprogram)
+ .byte 0 # end of children of DIE 0xa7
+ .uleb128 0x8 # (DIE (0xcd) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
.ascii "f1\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x21 # DW_AT_decl_line
+ .byte 0x22 # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long 0x48 # DW_AT_type
.long .LFB1 # DW_AT_low_pc
.long .LFE1 # DW_AT_high_pc
.long .LLST1 # DW_AT_frame_base
- .long 0xd4 # DW_AT_sibling
- .uleb128 0x7 # (DIE (0xba) DW_TAG_formal_parameter)
+ .long 0x103 # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0xe9) DW_TAG_formal_parameter)
.ascii "k\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x21 # DW_AT_decl_line
+ .byte 0x22 # DW_AT_decl_line
.long 0x48 # DW_AT_type
.byte 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 0
- .uleb128 0x9 # (DIE (0xc6) DW_TAG_variable)
+ .uleb128 0x9 # (DIE (0xf5) DW_TAG_variable)
.ascii "a\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x23 # DW_AT_decl_line
+ .byte 0x24 # DW_AT_decl_line
.long 0x25 # DW_AT_type
.long .LLST2 # DW_AT_location
- .byte 0 # end of children of DIE 0x9e
- .uleb128 0x8 # (DIE (0xd4) DW_TAG_subprogram)
+ .byte 0 # end of children of DIE 0xcd
+ .uleb128 0x8 # (DIE (0x103) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
.ascii "f2\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x2c # DW_AT_decl_line
+ .byte 0x2d # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long 0x48 # DW_AT_type
.long .LFB2 # DW_AT_low_pc
.long .LFE2 # DW_AT_high_pc
.long .LLST3 # DW_AT_frame_base
- .long 0x10a # DW_AT_sibling
- .uleb128 0x7 # (DIE (0xf0) DW_TAG_formal_parameter)
+ .long 0x139 # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0x11f) DW_TAG_formal_parameter)
.ascii "k\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x2c # DW_AT_decl_line
+ .byte 0x2d # DW_AT_decl_line
.long 0x48 # DW_AT_type
.byte 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 0
- .uleb128 0x9 # (DIE (0xfc) DW_TAG_variable)
+ .uleb128 0x9 # (DIE (0x12b) DW_TAG_variable)
.ascii "a\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x2e # DW_AT_decl_line
- .long 0x10a # DW_AT_type
+ .byte 0x2f # DW_AT_decl_line
+ .long 0x139 # DW_AT_type
.long .LLST4 # DW_AT_location
- .byte 0 # end of children of DIE 0xd4
- .uleb128 0xa # (DIE (0x10a) DW_TAG_array_type)
+ .byte 0 # end of children of DIE 0x103
+ .uleb128 0xa # (DIE (0x139) DW_TAG_array_type)
.long 0x48 # DW_AT_type
- .long 0x11a # DW_AT_sibling
- .uleb128 0xb # (DIE (0x113) DW_TAG_subrange_type)
- .long 0x11a # DW_AT_type
+ .long 0x149 # DW_AT_sibling
+ .uleb128 0xb # (DIE (0x142) DW_TAG_subrange_type)
+ .long 0x149 # DW_AT_type
.byte 0x1 # DW_AT_upper_bound
- .byte 0 # end of children of DIE 0x10a
- .uleb128 0xc # (DIE (0x11a) DW_TAG_base_type)
+ .byte 0 # end of children of DIE 0x139
+ .uleb128 0xc # (DIE (0x149) DW_TAG_base_type)
.byte 0x4 # DW_AT_byte_size
.byte 0x7 # DW_AT_encoding
- .uleb128 0x8 # (DIE (0x11d) DW_TAG_subprogram)
+ .uleb128 0x8 # (DIE (0x14c) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
.ascii "f3\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x37 # DW_AT_decl_line
+ .byte 0x38 # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long 0x48 # DW_AT_type
.long .LFB3 # DW_AT_low_pc
.long .LFE3 # DW_AT_high_pc
.long .LLST5 # DW_AT_frame_base
- .long 0x153 # DW_AT_sibling
- .uleb128 0x7 # (DIE (0x139) DW_TAG_formal_parameter)
+ .long 0x182 # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0x168) DW_TAG_formal_parameter)
.ascii "k\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x37 # DW_AT_decl_line
+ .byte 0x38 # DW_AT_decl_line
.long 0x48 # DW_AT_type
.byte 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 0
- .uleb128 0x9 # (DIE (0x145) DW_TAG_variable)
+ .uleb128 0x9 # (DIE (0x174) DW_TAG_variable)
.ascii "a\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x39 # DW_AT_decl_line
+ .byte 0x3a # DW_AT_decl_line
.long 0x4f # DW_AT_type
.long .LLST6 # DW_AT_location
- .byte 0 # end of children of DIE 0x11d
- .uleb128 0x8 # (DIE (0x153) DW_TAG_subprogram)
+ .byte 0 # end of children of DIE 0x14c
+ .uleb128 0x8 # (DIE (0x182) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
.ascii "f4\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x42 # DW_AT_decl_line
+ .byte 0x43 # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long 0x48 # DW_AT_type
.long .LFB4 # DW_AT_low_pc
.long .LFE4 # DW_AT_high_pc
.long .LLST7 # DW_AT_frame_base
- .long 0x189 # DW_AT_sibling
- .uleb128 0x7 # (DIE (0x16f) DW_TAG_formal_parameter)
+ .long 0x1b8 # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0x19e) DW_TAG_formal_parameter)
.ascii "k\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x42 # DW_AT_decl_line
+ .byte 0x43 # DW_AT_decl_line
.long 0x48 # DW_AT_type
.byte 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 0
- .uleb128 0x9 # (DIE (0x17b) DW_TAG_variable)
+ .uleb128 0x9 # (DIE (0x1aa) DW_TAG_variable)
.ascii "a\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x44 # DW_AT_decl_line
- .long 0x10a # DW_AT_type
+ .byte 0x45 # DW_AT_decl_line
+ .long 0x139 # DW_AT_type
.long .LLST8 # DW_AT_location
- .byte 0 # end of children of DIE 0x153
- .uleb128 0x8 # (DIE (0x189) DW_TAG_subprogram)
+ .byte 0 # end of children of DIE 0x182
+ .uleb128 0x8 # (DIE (0x1b8) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
.ascii "f5\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x4d # DW_AT_decl_line
+ .byte 0x4e # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long 0x48 # DW_AT_type
.long .LFB5 # DW_AT_low_pc
.long .LFE5 # DW_AT_high_pc
.long .LLST9 # DW_AT_frame_base
- .long 0x1bf # DW_AT_sibling
- .uleb128 0x7 # (DIE (0x1a5) DW_TAG_formal_parameter)
+ .long 0x1ee # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0x1d4) DW_TAG_formal_parameter)
.ascii "k\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x4d # DW_AT_decl_line
+ .byte 0x4e # DW_AT_decl_line
.long 0x48 # DW_AT_type
.byte 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 0
- .uleb128 0x9 # (DIE (0x1b1) DW_TAG_variable)
+ .uleb128 0x9 # (DIE (0x1e0) DW_TAG_variable)
.ascii "a\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x4f # DW_AT_decl_line
+ .byte 0x50 # DW_AT_decl_line
.long 0x25 # DW_AT_type
.long .LLST10 # DW_AT_location
- .byte 0 # end of children of DIE 0x189
- .uleb128 0xd # (DIE (0x1bf) DW_TAG_subprogram)
+ .byte 0 # end of children of DIE 0x1b8
+ .uleb128 0x8 # (DIE (0x1ee) DW_TAG_subprogram)
.byte 0x1 # DW_AT_external
- .long .LASF0 # DW_AT_name: "main"
+ .ascii "f6\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x58 # DW_AT_decl_line
+ .byte 0x59 # DW_AT_decl_line
.byte 0x1 # DW_AT_prototyped
.long 0x48 # DW_AT_type
.long .LFB6 # DW_AT_low_pc
.long .LFE6 # DW_AT_high_pc
.long .LLST11 # DW_AT_frame_base
- .uleb128 0x9 # (DIE (0x1d8) DW_TAG_variable)
+ .long 0x22e # DW_AT_sibling
+ .uleb128 0x7 # (DIE (0x20a) DW_TAG_formal_parameter)
.ascii "k\0" # DW_AT_name
.byte 0x1 # DW_AT_decl_file (pieces.c)
- .byte 0x5a # DW_AT_decl_line
+ .byte 0x59 # DW_AT_decl_line
.long 0x48 # DW_AT_type
+ .byte 0x2 # DW_AT_location
+ .byte 0x91 # DW_OP_fbreg
+ .sleb128 0
+ .uleb128 0xd # (DIE (0x216) DW_TAG_variable)
+ .ascii "z\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x5b # DW_AT_decl_line
+ .long 0x48 # DW_AT_type
+ .byte 0x17 # DW_AT_const_value
+ .uleb128 0x9 # (DIE (0x220) DW_TAG_variable)
+ .ascii "a\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x5c # DW_AT_decl_line
+ .long 0x78 # DW_AT_type
.long .LLST12 # DW_AT_location
- .byte 0 # end of children of DIE 0x1bf
+ .byte 0 # end of children of DIE 0x1ee
+ .uleb128 0xe # (DIE (0x22e) DW_TAG_subprogram)
+ .byte 0x1 # DW_AT_external
+ .long .LASF0 # DW_AT_name: "main"
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x65 # DW_AT_decl_line
+ .byte 0x1 # DW_AT_prototyped
+ .long 0x48 # DW_AT_type
+ .long .LFB7 # DW_AT_low_pc
+ .long .LFE7 # DW_AT_high_pc
+ .long .LLST13 # DW_AT_frame_base
+ .uleb128 0x9 # (DIE (0x247) DW_TAG_variable)
+ .ascii "k\0" # DW_AT_name
+ .byte 0x1 # DW_AT_decl_file (pieces.c)
+ .byte 0x67 # DW_AT_decl_line
+ .long 0x48 # DW_AT_type
+ .long .LLST14 # DW_AT_location
+ .byte 0 # end of children of DIE 0x22e
.byte 0 # end of children of DIE 0xb
.section .debug_abbrev
.uleb128 0x1 # (abbrev code)
@@ -1577,6 +1800,21 @@
.byte 0
.byte 0
.uleb128 0xd # (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 0x1c # (DW_AT_const_value)
+ .uleb128 0xb # (DW_FORM_data1)
+ .byte 0
+ .byte 0
+ .uleb128 0xe # (abbrev code)
.uleb128 0x2e # (TAG: DW_TAG_subprogram)
.byte 0x1 # DW_children_yes
.uleb128 0x3f # (DW_AT_external)
@@ -1601,34 +1839,38 @@
.byte 0
.byte 0
.section .debug_pubnames,"",@progbits
- .long 0x42 # Length of Public Names Info
+ .long 0x49 # Length of Public Names Info
.value 0x2 # DWARF Version
.long .Ldebug_info0 # Offset of Compilation Unit Info
- .long 0x1e7 # Compilation Unit Length
- .long 0x78 # DIE offset
+ .long 0x256 # Compilation Unit Length
+ .long 0xa7 # DIE offset
.ascii "bar\0" # external name
- .long 0x9e # DIE offset
+ .long 0xcd # DIE offset
.ascii "f1\0" # external name
- .long 0xd4 # DIE offset
+ .long 0x103 # DIE offset
.ascii "f2\0" # external name
- .long 0x11d # DIE offset
+ .long 0x14c # DIE offset
.ascii "f3\0" # external name
- .long 0x153 # DIE offset
+ .long 0x182 # DIE offset
.ascii "f4\0" # external name
- .long 0x189 # DIE offset
+ .long 0x1b8 # DIE offset
.ascii "f5\0" # external name
- .long 0x1bf # DIE offset
+ .long 0x1ee # DIE offset
+ .ascii "f6\0" # external name
+ .long 0x22e # DIE offset
.ascii "main\0" # external name
.long 0
.section .debug_pubtypes,"",@progbits
- .long 0x1a # Length of Public Type Names Info
+ .long 0x20 # Length of Public Type Names Info
.value 0x2 # DWARF Version
.long .Ldebug_info0 # Offset of Compilation Unit Info
- .long 0x1e7 # Compilation Unit Length
+ .long 0x256 # Compilation Unit Length
.long 0x25 # DIE offset
.ascii "A\0" # external name
.long 0x4f # DIE offset
.ascii "B\0" # external name
+ .long 0x78 # DIE offset
+ .ascii "C\0" # external name
.long 0
.section .debug_aranges,"",@progbits
.long 0x1c # Length of Address Ranges Info
--- src/gdb/testsuite/gdb.dwarf2/pieces.c 2010/05/21 20:39:50 1.1
+++ src/gdb/testsuite/gdb.dwarf2/pieces.c 2010/05/21 21:01:46 1.2
@@ -22,6 +22,7 @@
struct A { int i; int j; };
struct B { int : 4; int i : 12; int j : 12; int : 4; };
+struct C { int i; int j; int q; };
__attribute__((noinline)) void
bar (int x)
@@ -84,6 +85,18 @@
return a.i + a.j; /* f5 breakpoint */
}
+__attribute__((noinline)) int
+f6 (int k)
+{
+ int z = 23;
+ struct C a = { k, k, z};
+ asm ("" : "+r" (a.i));
+ a.j++;
+ bar (a.i);
+ bar (a.j);
+ return a.i + a.j; /* f6 breakpoint */
+}
+
int
main (void)
{
@@ -94,5 +107,6 @@
f3 (k);
f4 (k);
f5 (k);
+ f6 (k);
return 0;
}
--- src/gdb/testsuite/gdb.dwarf2/pieces.exp 2010/05/21 21:00:27 1.2
+++ src/gdb/testsuite/gdb.dwarf2/pieces.exp 2010/05/21 21:01:46 1.3
@@ -67,5 +67,28 @@
gdb_test "print a\[1\]" " = 14" "print a\[1\] in pieces:f2"
}
+# Function f6 tests for an empty DW_OP_piece.
+proc pieces_test_f6 {} {
+ global csrcfile
+ set line [gdb_get_line_number "f6 breakpoint" $csrcfile]
+ gdb_test "break pieces.c:$line" "Breakpoint 4.*" \
+ "set f6 breakpoint for pieces"
+ gdb_continue_to_breakpoint "continue to f6 breakpoint for pieces"
+ gdb_test "print a" \
+ "warning: bytes .* in computed object were.* = {i = 7, j = 8, q = 0}" \
+ "print a with optimized out piece"
+ # Note: no warning for this case.
+ gdb_test_multiple "print a.i" \
+ "print a.i with optimized out piece" {
+ -re "warning: some bits in computed object" {
+ fail "print a.i with optimized out piece"
+ }
+ -re " = 7" {
+ pass "print a.i with optimized out piece"
+ }
+ }
+}
+
pieces_test_f1
pieces_test_f2
+pieces_test_f6
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