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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.
34 lines
1.1 KiB
Makefile
34 lines
1.1 KiB
Makefile
#source: bnd-ifunc-1.s
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#as: --64 -madd-bnd-prefix -mx86-used-note=no
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#ld: -z now -shared -melf_x86_64 -z bndplt --hash-style=sysv -z max-page-size=0x200000 -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+170 <.plt>:
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+[a-f0-9]+: ff 35 4a 01 20 00 push 0x20014a\(%rip\) # 2002c0 <_GLOBAL_OFFSET_TABLE_\+0x8>
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+[a-f0-9]+: f2 ff 25 4b 01 20 00 bnd jmp \*0x20014b\(%rip\) # 2002c8 <_GLOBAL_OFFSET_TABLE_\+0x10>
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+[a-f0-9]+: 0f 1f 00 nopl \(%rax\)
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+[a-f0-9]+: 68 00 00 00 00 push \$0x0
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+[a-f0-9]+: f2 e9 e5 ff ff ff bnd jmp 170 <.plt>
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+[a-f0-9]+: 0f 1f 44 00 00 nopl 0x0\(%rax,%rax,1\)
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Disassembly of section .plt.sec:
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0+190 <\*ABS\*\+0x198@plt>:
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+[a-f0-9]+: f2 ff 25 39 01 20 00 bnd jmp \*0x200139\(%rip\) # 2002d0 <_GLOBAL_OFFSET_TABLE_\+0x18>
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+[a-f0-9]+: 90 nop
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Disassembly of section .text:
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0+198 <foo>:
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+[a-f0-9]+: f2 c3 bnd ret *
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0+19a <bar>:
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+[a-f0-9]+: f2 e8 f0 ff ff ff bnd call 190 <\*ABS\*\+0x198@plt>
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+[a-f0-9]+: f2 c3 bnd ret *
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#pass
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