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|
/*
Copyright 2009-2024 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 was compiled from a trivial program just to test the
DW_OP_stack_value and DW_OP_implicit_value operators:
unsigned int func (unsigned int arg) __attribute__ ((__noinline__));
unsigned int func (unsigned int arg)
{
unsigned int uses_stack_op = 23;
unsigned int uses_lit_op = 0x7fffffff;
unsigned int result = arg;
if (arg % 2)
result += uses_lit_op + uses_stack_op;
else
{
++uses_stack_op;
++uses_lit_op;
result -= uses_stack_op + uses_lit_op;
}
return result * uses_stack_op; // line 19, see the .exp file
}
int main (int argc, char *argv[])
{
return func (1024);
}
Then it was compiled with:
gcc -fvar-tracking{,-assignments} -gdwarf-3
-fno-inline{,-functions,-small-functions,-functions-called-once}
-O2
*/
.file "valop.c"
.section .debug_abbrev,"",@progbits
.Ldebug_abbrev0:
.section .debug_info,"",@progbits
.Ldebug_info0:
.section .debug_line,"",@progbits
.Ldebug_line0:
.text
.Ltext0:
.p2align 4,,15
.globl func
.type func, @function
func:
.LFB0:
.file 1 "valop.c"
.loc 1 4 0
.cfi_startproc
.LVL0:
pushl %ebp
.cfi_def_cfa_offset 8
movl %esp, %ebp
.cfi_offset 5, -8
.cfi_def_cfa_register 5
.loc 1 4 0
movl 8(%ebp), %eax
.LVL1:
.loc 1 9 0
testb $1, %al
jne .L5
.LVL2:
.loc 1 16 0
addl $2147483624, %eax
.LVL3:
.loc 1 13 0
movl $24, %edx
.LVL4:
.loc 1 16 0
imull %edx, %eax
.LVL5:
.loc 1 20 0
popl %ebp
.cfi_remember_state
.cfi_restore 5
.cfi_def_cfa 4, 4
ret
.LVL6:
.p2align 4,,7
.p2align 3
.L5:
.cfi_restore_state
.loc 1 10 0
subl $2147483626, %eax
.LVL7:
.loc 1 5 0
movl $23, %edx
.LVL8:
.loc 1 16 0
imull %edx, %eax
.LVL9:
.loc 1 20 0
popl %ebp
.cfi_def_cfa 4, 4
.cfi_restore 5
ret
.cfi_endproc
.LFE0:
.size func, .-func
.p2align 4,,15
.globl _start
.type _start, @function
_start:
.LFB1:
.loc 1 23 0
.cfi_startproc
.LVL10:
pushl %ebp
.cfi_def_cfa_offset 8
movl %esp, %ebp
.cfi_offset 5, -8
.cfi_def_cfa_register 5
subl $4, %esp
.loc 1 24 0
movl $1024, (%esp)
call func
.LVL11:
.loc 1 25 0
leave
.cfi_restore 5
.cfi_def_cfa 4, 4
ret
.cfi_endproc
.LFE1:
.size _start, .-_start
.Letext0:
.section .debug_loc,"",@progbits
.Ldebug_loc0:
.LLST0:
.long .LVL0-.Ltext0
.long .LVL2-.Ltext0
.value 0x4
.byte 0x47
.byte 0x9f
.byte 0x93
.uleb128 0x4
.long .LVL2-.Ltext0
.long .LVL4-.Ltext0
.value 0x4
.byte 0x48
.byte 0x9f
.byte 0x93
.uleb128 0x4
.long .LVL4-.Ltext0
.long .LVL6-.Ltext0
.value 0x1
.byte 0x52
.long .LVL6-.Ltext0
.long .LVL8-.Ltext0
.value 0x4
.byte 0x47
.byte 0x9f
.byte 0x93
.uleb128 0x4
.long .LVL8-.Ltext0
.long .LFE0-.Ltext0
.value 0x1
.byte 0x52
.long 0x0
.long 0x0
.LLST1:
.long .LVL0-.Ltext0
.long .LVL2-.Ltext0
.value 0x6
.byte 0x9e
.uleb128 0x4
.long 0x7fffffff
.long .LVL2-.Ltext0
.long .LVL6-.Ltext0
.value 0x6
.byte 0x9e
.uleb128 0x4
.long 0x80000000
.long .LVL6-.Ltext0
.long .LFE0-.Ltext0
.value 0x6
.byte 0x9e
.uleb128 0x4
.long 0x7fffffff
.long 0x0
.long 0x0
.LLST2:
.long .LVL1-.Ltext0
.long .LVL3-.Ltext0
.value 0x1
.byte 0x50
.long .LVL3-.Ltext0
.long .LVL5-.Ltext0
.value 0x1
.byte 0x50
.long .LVL6-.Ltext0
.long .LVL7-.Ltext0
.value 0x1
.byte 0x50
.long .LVL7-.Ltext0
.long .LVL9-.Ltext0
.value 0x1
.byte 0x50
.long 0x0
.long 0x0
.LLST3:
.long .LVL10-.Ltext0
.long .LVL11-1-.Ltext0
.value 0x2
.byte 0x91
.sleb128 0
.long 0x0
.long 0x0
.LLST4:
.long .LVL10-.Ltext0
.long .LVL11-1-.Ltext0
.value 0x2
.byte 0x91
.sleb128 4
.long 0x0
.long 0x0
.section .debug_info
.long 0xd4
.value 0x3
.long .Ldebug_abbrev0
.byte 0x4
.uleb128 0x1
.long .LASF9
.byte 0x1
.long .LASF10
.long .LASF11
.long .Ltext0
.long .Letext0
.long .Ldebug_line0
.uleb128 0x2
.byte 0x1
.long .LASF3
.byte 0x1
.byte 0x3
.byte 0x1
.long 0x7c
.long .LFB0
.long .LFE0
.byte 0x1
.byte 0x9c
.long 0x7c
.uleb128 0x3
.string "arg"
.byte 0x1
.byte 0x3
.long 0x7c
.byte 0x2
.byte 0x91
.sleb128 0
.uleb128 0x4
.long .LASF0
.byte 0x1
.byte 0x5
.long 0x7c
.long .LLST0
.uleb128 0x4
.long .LASF1
.byte 0x1
.byte 0x6
.long 0x7c
.long .LLST1
.uleb128 0x4
.long .LASF2
.byte 0x1
.byte 0x7
.long 0x7c
.long .LLST2
.byte 0x0
.uleb128 0x5
.byte 0x4
.byte 0x7
.long .LASF7
.uleb128 0x2
.byte 0x1
.long .LASF4
.byte 0x1
.byte 0x16
.byte 0x1
.long 0xbd
.long .LFB1
.long .LFE1
.byte 0x1
.byte 0x9c
.long 0xbd
.uleb128 0x6
.long .LASF5
.byte 0x1
.byte 0x16
.long 0xbd
.long .LLST3
.uleb128 0x6
.long .LASF6
.byte 0x1
.byte 0x16
.long 0xc4
.long .LLST4
.byte 0x0
.uleb128 0x7
.byte 0x4
.byte 0x5
.string "int"
.uleb128 0x8
.byte 0x4
.long 0xca
.uleb128 0x8
.byte 0x4
.long 0xd0
.uleb128 0x5
.byte 0x1
.byte 0x6
.long .LASF8
.byte 0x0
.section .debug_abbrev
.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 0x0
.byte 0x0
.uleb128 0x2
.uleb128 0x2e
.byte 0x1
.uleb128 0x3f
.uleb128 0xc
.uleb128 0x3
.uleb128 0xe
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x27
.uleb128 0xc
.uleb128 0x49
.uleb128 0x13
.uleb128 0x11
.uleb128 0x1
.uleb128 0x12
.uleb128 0x1
.uleb128 0x40
.uleb128 0xa
.uleb128 0x1
.uleb128 0x13
.byte 0x0
.byte 0x0
.uleb128 0x3
.uleb128 0x5
.byte 0x0
.uleb128 0x3
.uleb128 0x8
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x49
.uleb128 0x13
.uleb128 0x2
.uleb128 0xa
.byte 0x0
.byte 0x0
.uleb128 0x4
.uleb128 0x34
.byte 0x0
.uleb128 0x3
.uleb128 0xe
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x49
.uleb128 0x13
.uleb128 0x2
.uleb128 0x6
.byte 0x0
.byte 0x0
.uleb128 0x5
.uleb128 0x24
.byte 0x0
.uleb128 0xb
.uleb128 0xb
.uleb128 0x3e
.uleb128 0xb
.uleb128 0x3
.uleb128 0xe
.byte 0x0
.byte 0x0
.uleb128 0x6
.uleb128 0x5
.byte 0x0
.uleb128 0x3
.uleb128 0xe
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x49
.uleb128 0x13
.uleb128 0x2
.uleb128 0x6
.byte 0x0
.byte 0x0
.uleb128 0x7
.uleb128 0x24
.byte 0x0
.uleb128 0xb
.uleb128 0xb
.uleb128 0x3e
.uleb128 0xb
.uleb128 0x3
.uleb128 0x8
.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_pubnames,"",@progbits
.long 0x20
.value 0x2
.long .Ldebug_info0
.long 0xd8
.long 0x25
.string "func"
.long 0x83
.string "main"
.long 0x0
.section .debug_aranges,"",@progbits
.long 0x1c
.value 0x2
.long .Ldebug_info0
.byte 0x4
.byte 0x0
.value 0x0
.value 0x0
.long .Ltext0
.long .Letext0-.Ltext0
.long 0x0
.long 0x0
.section .debug_str,"MS",@progbits,1
.LASF7:
.string "unsigned int"
.LASF3:
.string "func"
.LASF0:
.string "uses_stack_op"
.LASF5:
.string "argc"
.LASF10:
.string "valop.c"
.LASF2:
.string "result"
.LASF8:
.string "char"
.LASF9:
.string "GNU C 4.5.0 20090818 (experimental) [var-tracking-assignments-branch revision 150964]"
.LASF4:
.string "main"
.LASF11:
.string "/tmp"
.LASF1:
.string "uses_lit_op"
.LASF6:
.string "argv"
.ident "GCC: (GNU) 4.5.0 20090818 (experimental) [var-tracking-assignments-branch revision 150964]"
.section .note.GNU-stack,"",@progbits
|
