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https://sourceware.org/git/binutils-gdb.git
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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.
53 lines
1.8 KiB
Makefile
53 lines
1.8 KiB
Makefile
#source: ibt-plt-3.s
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#as: --32
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#ld: -shared -m elf_i386 -z ibtplt --hash-style=sysv -z noseparate-code
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#objdump: -dw
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.*: +file format .*
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Disassembly of section .plt:
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0+140 <.plt>:
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+[a-f0-9]+: ff b3 04 00 00 00 push 0x4\(%ebx\)
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+[a-f0-9]+: ff a3 08 00 00 00 jmp \*0x8\(%ebx\)
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+[a-f0-9]+: 0f 1f 40 00 nopl 0x0\(%eax\)
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: 68 00 00 00 00 push \$0x0
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+[a-f0-9]+: e9 e2 ff ff ff jmp 140 <.plt>
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+[a-f0-9]+: 66 90 xchg %ax,%ax
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: 68 08 00 00 00 push \$0x8
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+[a-f0-9]+: e9 d2 ff ff ff jmp 140 <.plt>
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+[a-f0-9]+: 66 90 xchg %ax,%ax
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Disassembly of section .plt.sec:
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0+170 <bar1@plt>:
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: ff a3 0c 00 00 00 jmp \*0xc\(%ebx\)
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+[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%eax,%eax,1\)
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0+180 <bar2@plt>:
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+[a-f0-9]+: f3 0f 1e fb endbr32
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+[a-f0-9]+: ff a3 10 00 00 00 jmp \*0x10\(%ebx\)
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+[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%eax,%eax,1\)
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Disassembly of section .text:
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0+190 <foo>:
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+[a-f0-9]+: 53 push %ebx
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+[a-f0-9]+: e8 18 00 00 00 call 1ae <__x86.get_pc_thunk.bx>
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+[a-f0-9]+: 81 c3 1a 11 00 00 add \$0x111a,%ebx
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+[a-f0-9]+: 83 ec 08 sub \$0x8,%esp
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+[a-f0-9]+: e8 dc ff ff ff call 180 <bar2@plt>
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+[a-f0-9]+: e8 c7 ff ff ff call 170 <bar1@plt>
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+[a-f0-9]+: 83 c4 08 add \$0x8,%esp
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+[a-f0-9]+: 5b pop %ebx
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+[a-f0-9]+: c3 ret
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0+1ae <__x86.get_pc_thunk.bx>:
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+[a-f0-9]+: 8b 1c 24 mov \(%esp\),%ebx
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+[a-f0-9]+: c3 ret
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#pass
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