mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-24 12:35:55 +08:00
36938cabf0
"Unambiguous" is is in particular taking as reference the assembler, which also accepts certain insns - despite them allowing for varying operand size, and hence in principle being ambiguous - without any suffix. For example, from the very beginning of the life of x86-64 I had trouble understanding why a plain and simple RET had to be printed as RETQ. In case someone really used the 16-bit form, RETW disambiguates the two quite fine.
52 lines
1.8 KiB
D
52 lines
1.8 KiB
D
#as: --32
|
|
#ld: -shared -m elf_i386 --hash-style=sysv -z noseparate-code
|
|
#objdump: -dw
|
|
|
|
.*: +file format .*
|
|
|
|
|
|
Disassembly of section .plt:
|
|
|
|
[a-f0-9]+ <.plt>:
|
|
+[a-f0-9]+: ff b3 04 00 00 00 push 0x4\(%ebx\)
|
|
+[a-f0-9]+: ff a3 08 00 00 00 jmp \*0x8\(%ebx\)
|
|
+[a-f0-9]+: 0f 1f 40 00 nopl 0x0\(%eax\)
|
|
+[a-f0-9]+: f3 0f 1e fb endbr32
|
|
+[a-f0-9]+: 68 00 00 00 00 push \$0x0
|
|
+[a-f0-9]+: e9 e2 ff ff ff jmp [a-f0-9]+ <.plt>
|
|
+[a-f0-9]+: 66 90 xchg %ax,%ax
|
|
+[a-f0-9]+: f3 0f 1e fb endbr32
|
|
+[a-f0-9]+: 68 08 00 00 00 push \$0x8
|
|
+[a-f0-9]+: e9 d2 ff ff ff jmp [a-f0-9]+ <.plt>
|
|
+[a-f0-9]+: 66 90 xchg %ax,%ax
|
|
|
|
Disassembly of section .plt.sec:
|
|
|
|
[a-f0-9]+ <bar1@plt>:
|
|
+[a-f0-9]+: f3 0f 1e fb endbr32
|
|
+[a-f0-9]+: ff a3 0c 00 00 00 jmp \*0xc\(%ebx\)
|
|
+[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%eax,%eax,1\)
|
|
|
|
[a-f0-9]+ <bar2@plt>:
|
|
+[a-f0-9]+: f3 0f 1e fb endbr32
|
|
+[a-f0-9]+: ff a3 10 00 00 00 jmp \*0x10\(%ebx\)
|
|
+[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%eax,%eax,1\)
|
|
|
|
Disassembly of section .text:
|
|
|
|
[a-f0-9]+ <foo>:
|
|
+[a-f0-9]+: 53 push %ebx
|
|
+[a-f0-9]+: e8 18 00 00 00 call [a-f0-9]+ <__x86.get_pc_thunk.bx>
|
|
+[a-f0-9]+: 81 c3 ([0-9a-f]{2} ){4}[ ]+add \$0x[a-f0-9]+,%ebx
|
|
+[a-f0-9]+: 83 ec 08 sub \$0x8,%esp
|
|
+[a-f0-9]+: e8 dc ff ff ff call [a-f0-9]+ <bar2@plt>
|
|
+[a-f0-9]+: e8 c7 ff ff ff call [a-f0-9]+ <bar1@plt>
|
|
+[a-f0-9]+: 83 c4 08 add \$0x8,%esp
|
|
+[a-f0-9]+: 5b pop %ebx
|
|
+[a-f0-9]+: c3 ret
|
|
|
|
[a-f0-9]+ <__x86.get_pc_thunk.bx>:
|
|
+[a-f0-9]+: 8b 1c 24 mov \(%esp\),%ebx
|
|
+[a-f0-9]+: c3 ret
|
|
#pass
|