gcc -g -c ./src/hello.c -o ./obj/hello.o
cd obj
objdump -S hello.o
No source debugging information can be seen in hello.o
hello.o: file format elf32-i386
Disassembly of section .text:
00000000 <main>:
0: 55 push %ebp
1: 89 e5 mov %esp,%ebp
3: 83 ec 08 sub $0x8,%esp
6: 83 e4 f0 and $0xfffffff0,%esp
9: b8 00 00 00 00 mov $0x0,%eax
e: 83 c0 0f add $0xf,%eax
11: 83 c0 0f add $0xf,%eax
14: c1 e8 04 shr $0x4,%eax
17: c1 e0 04 shl $0x4,%eax
1a: 29 c4 sub %eax,%esp
1c: 83 ec 0c sub $0xc,%esp
1f: 68 00 00 00 00 push $0x0
24: e8 fc ff ff ff call 25 <main+0x25>
29: 83 c4 10 add $0x10,%esp
2c: b8 00 00 00 00 mov $0x0,%eax
31: c9 leave
32: c3 ret
gcc -g -c /home/yangzx/src/hello.c -o /home/yangzx/obj/hello.o
Source debugging information can be seen in hello.o
hello.o: file format elf32-i386
Disassembly of section .text:
00000000 <main>:
#include <stdio.h>
int main(void)
{
0: 55 push %ebp
1: 89 e5 mov %esp,%ebp
3: 83 ec 08 sub $0x8,%esp
6: 83 e4 f0 and $0xfffffff0,%esp
9: b8 00 00 00 00 mov $0x0,%eax
e: 83 c0 0f add $0xf,%eax
11: 83 c0 0f add $0xf,%eax
14: c1 e8 04 shr $0x4,%eax
17: c1 e0 04 shl $0x4,%eax
1a: 29 c4 sub %eax,%esp
printf("hello world\n");
1c: 83 ec 0c sub $0xc,%esp
1f: 68 00 00 00 00 push $0x0
24: e8 fc ff ff ff call 25 <main+0x25>
29: 83 c4 10 add $0x10,%esp
return 0;
2c: b8 00 00 00 00 mov $0x0,%eax
}
31: c9 leave
32: c3 ret
--
Summary: No source debugging information with relative path by
objdump
Product: binutils
Version: 2.17
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: moonlight dot yang at gmail dot com
CC: bug-binutils at gnu dot org
http://sourceware.org/bugzilla/show_bug.cgi?id=5494
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