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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.
29 lines
1.1 KiB
Makefile
29 lines
1.1 KiB
Makefile
#source: tlspie2.s
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#as: --64 -mrelax-relocations=yes
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#ld: -melf_x86_64 -pie -z call-nop=suffix-nop
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#objdump: -dwr
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.*: +file format .*
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Disassembly of section .text:
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[a-f0-9]+ <__tls_get_addr>:
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[ ]*[a-f0-9]+: c3 ret *
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[a-f0-9]+ <_start>:
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[ ]*[a-f0-9]+: 48 c7 c0 f4 ff ff ff mov \$0xfffffffffffffff4,%rax
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[ ]*[a-f0-9]+: 53 push %rbx
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[ ]*[a-f0-9]+: 64 8b 1c 25 f0 ff ff ff mov %fs:0xfffffffffffffff0,%ebx
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[ ]*[a-f0-9]+: 64 03 1c 25 ec ff ff ff add %fs:0xffffffffffffffec,%ebx
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[ ]*[a-f0-9]+: 64 03 18 add %fs:\(%rax\),%ebx
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[ ]*[a-f0-9]+: 66 66 66 66 64 48 8b 04 25 00 00 00 00 data16 data16 data16 data16 mov %fs:0x0,%rax
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[ ]*[a-f0-9]+: 03 98 f8 ff ff ff add -0x8\(%rax\),%ebx
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[ ]*[a-f0-9]+: 64 48 8b 04 25 00 00 00 00 mov %fs:0x0,%rax
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[ ]*[a-f0-9]+: 48 8d 80 fc ff ff ff lea -0x4\(%rax\),%rax
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[ ]*[a-f0-9]+: 03 18 add \(%rax\),%ebx
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[ ]*[a-f0-9]+: 89 d8 mov %ebx,%eax
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[ ]*[a-f0-9]+: 5b pop %rbx
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[ ]*[a-f0-9]+: c3 ret *
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#pass
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