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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.
27 lines
1.1 KiB
Makefile
27 lines
1.1 KiB
Makefile
#source: pr19636-2.s
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#as: --64 -mrelax-relocations=no
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#ld: -pie -m elf_x86_64 --no-dynamic-linker --hash-style=sysv -z dynamic-undefined-weak -z max-page-size=0x200000 -z noseparate-code
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#objdump: -dw
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#warning: -z dynamic-undefined-weak ignored
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.*: +file format .*
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Disassembly of section .plt:
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0+120 <.plt>:
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+[a-f0-9]+: ff 35 2a 01 20 00 push 0x20012a\(%rip\) # 200250 <_GLOBAL_OFFSET_TABLE_\+0x8>
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+[a-f0-9]+: ff 25 2c 01 20 00 jmp \*0x20012c\(%rip\) # 200258 <_GLOBAL_OFFSET_TABLE_\+0x10>
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+[a-f0-9]+: 0f 1f 40 00 nopl 0x0\(%rax\)
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+[a-f0-9]+: ff 25 2a 01 20 00 jmp \*0x20012a\(%rip\) # 200260 <_GLOBAL_OFFSET_TABLE_\+0x18>
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+[a-f0-9]+: 68 00 00 00 00 push \$0x0
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+[a-f0-9]+: e9 00 00 00 00 jmp 140 <_start>
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Disassembly of section .text:
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0+140 <_start>:
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+[a-f0-9]+: 48 3b 05 f1 00 20 00 cmp 0x2000f1\(%rip\),%rax # 200238 <.got>
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+[a-f0-9]+: ff 25 f3 00 20 00 jmp \*0x2000f3\(%rip\) # 200240 <.got\+0x8>
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+[a-f0-9]+: e8 de ff ff ff call 130 <.plt\+0x10>
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#pass
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