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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.
32 lines
1.0 KiB
Makefile
32 lines
1.0 KiB
Makefile
#source: ifunc-2-x86-64.s
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#as: --64
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#ld: -z now -shared -melf_x86_64 --hash-style=sysv -z max-page-size=0x200000 -z noseparate-code
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#objdump: -dw
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#target: x86_64-*-*
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.*: +file format .*
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Disassembly of section .plt:
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0+170 <.plt>:
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+[a-f0-9]+: ff 35 42 01 20 00 push 0x200142\(%rip\) # 2002b8 <_GLOBAL_OFFSET_TABLE_\+0x8>
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+[a-f0-9]+: ff 25 44 01 20 00 jmp \*0x200144\(%rip\) # 2002c0 <_GLOBAL_OFFSET_TABLE_\+0x10>
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+[a-f0-9]+: 0f 1f 40 00 nopl 0x0\(%rax\)
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0+180 <\*ABS\*\+0x190@plt>:
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+[a-f0-9]+: ff 25 42 01 20 00 jmp \*0x200142\(%rip\) # 2002c8 <_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 e0 ff ff ff jmp 170 <.plt>
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Disassembly of section .text:
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0+190 <foo>:
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+[a-f0-9]+: c3 ret *
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0+191 <bar>:
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+[a-f0-9]+: e8 ea ff ff ff call 180 <\*ABS\*\+0x190@plt>
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+[a-f0-9]+: 48 8d 05 e3 ff ff ff lea -0x1d\(%rip\),%rax # 180 <\*ABS\*\+0x190@plt>
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+[a-f0-9]+: c3 ret *
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#pass
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