当我在我的文件上运行objdump -D时，我得到了我期望的汇编代码。
kernel.elf: file format elf32-i386
Disassembly of section .text:
00100000 <__code>:
100000: 02 b0 ad 1b 03 00 add 0x31bad(%eax),%dh
100006: 00 00 add %al,(%eax)
100008: fb sti
100009: 4f dec %edi
10000a: 52 push %edx
10000b: e4 00 in $0x0,%al
10000d: 00 10 add %dl,(%eax)
10000f: 00 00 add %al,(%eax)
100011: 00 10 add %dl,(%eax)
100013: 00 00 add %al,(%eax)
100015: 20 10 and %dl,(%eax)
100017: 00 00 add %al,(%eax)
100019: 40 inc %eax
10001a: 10 00 adc %al,(%eax)
10001c: 20 00 and %al,(%eax)
10001e: 10 00 adc %al,(%eax)
00100020 <start>:
100020: fa cli
100021: bc 00 40 10 00 mov $0x104000,%esp
100026: 53 push %ebx
100027: e8 02 00 00 00 call 10002e <main>
10002c: eb fe jmp 10002c <start+0xc>
0010002e <main>:
10002e: 55 push %ebp
10002f: 89 e5 mov %esp,%ebp
100031: 83 ec 10 sub $0x10,%esp
100034: c7 45 fc 28 23 00 00 movl $0x2328,-0x4(%ebp)
10003b: b8 ef be ad de mov $0xdeadbeef,%eax
100040: c9 leave
100041: c3 ret
100042: 66 90 xchg %ax,%ax
100044: 66 90 xchg %ax,%ax
100046: 66 90 xchg %ax,%ax
100048: 66 90 xchg %ax,%ax
...
但是，当我在GDB上打开文件（通过QEMU和目标远程）并运行(gdb) disassemble时，相同的位置保存空值而不是预期的指令（add %al,(%eax)相当于{{1 }}）。
00 00为什么会这样？为什么GDB不读取（加载？）正确的值？