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"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.
15 lines
278 B
Makefile
15 lines
278 B
Makefile
#source: call1.s
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#as: --x32 -mrelax-relocations=yes
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#ld: -melf32_x86_64 -z call-nop=suffix-0x90
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#objdump: -dw
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.*: +file format .*
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Disassembly of section .text:
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#...
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[ ]*[a-f0-9]+: e8 ([0-9a-f]{2} ){4} * call +[a-f0-9]+ <foo>
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[ ]*[a-f0-9]+: 90 nop
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#pass
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