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https://sourceware.org/git/binutils-gdb.git
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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.
200 lines
7.2 KiB
Plaintext
200 lines
7.2 KiB
Plaintext
#source: tlsdesc.s
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#source: tlspic2.s
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#as: --64
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#ld: -shared -melf_x86_64 --no-ld-generated-unwind-info
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#objdump: -drj.text
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#target: x86_64-*-*
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.*: +file format elf64-x86-64.*
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Disassembly of section .text:
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0+[0-9a-f]+ <fn1>:
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+[0-9a-f]+: 55[ ]+push %rbp
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+[0-9a-f]+: 48 89 e5[ ]+mov %rsp,%rbp
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD
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+[0-9a-f]+: 48 8d 05 ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <.*>
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# -> R_X86_64_TLSDESC sg1
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+[0-9a-f]+: ff 10[ ]+call \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE because variable is referenced through IE too
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+[0-9a-f]+: 48 8b 05 ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 sg2
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+[0-9a-f]+: 66 90[ ]+xchg %ax,%ax
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD against local variable
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+[0-9a-f]+: 48 8d 05 ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_GLOBAL_OFFSET_TABLE_\+0x18>
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# -> R_X86_64_TLSDESC [0 0x2000000000000000]
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+[0-9a-f]+: ff 10[ ]+call \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE against local variable referenced through IE too
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+[0-9a-f]+: 48 8b 05 ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x24
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+[0-9a-f]+: 66 90[ ]+xchg %ax,%ax
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD against hidden and local variable
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+[0-9a-f]+: 48 8d 05 ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_GLOBAL_OFFSET_TABLE_\+0x58>
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# -> R_X86_64_TLSDESC [0 0x4000000000000000]
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+[0-9a-f]+: ff 10[ ]+call \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE against hidden and local variable referenced through IE too
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+[0-9a-f]+: 48 8b 05 ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x44
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+[0-9a-f]+: 66 90[ ]+xchg %ax,%ax
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD against hidden but not local variable
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+[0-9a-f]+: 48 8d 05 ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_GLOBAL_OFFSET_TABLE_\+0x28>
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# -> R_X86_64_TLSDESC [0 0x6000000000000000]
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+[0-9a-f]+: ff 10[ ]+call \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# GD -> IE against hidden but not local variable referenced through IE too
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+[0-9a-f]+: 48 8b 05 ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x64
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+[0-9a-f]+: 66 90[ ]+xchg %ax,%ax
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# LD
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+[0-9a-f]+: 48 8d 05 ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_GLOBAL_OFFSET_TABLE_\+0x38>
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# -> R_X86_64_TLSDESC [0 0x000000000000000]
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+[0-9a-f]+: ff 10[ ]+call \*\(%rax\)
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 8d 90 20 00 00 00[ ]+lea 0x20\(%rax\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 4c 8d 88 26 00 00 00[ ]+lea 0x26\(%rax\),%r9
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# LD against hidden and local variables
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+[0-9a-f]+: 48 8d 90 40 00 00 00[ ]+lea 0x40\(%rax\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 8d 88 47 00 00 00[ ]+lea 0x47\(%rax\),%rcx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# LD against hidden but not local variables
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+[0-9a-f]+: 4c 8d a0 60 00 00 00[ ]+lea 0x60\(%rax\),%r12
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 8d 88 65 00 00 00[ ]+lea 0x65\(%rax\),%rcx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against global var
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+[0-9a-f]+: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 03 0d ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rcx +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 sg2
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against local var
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+[0-9a-f]+: 64 4c 8b 34 25 00 00[ ]+mov %fs:0x0,%r14
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 4c 03 35 ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%r14 +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x24
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden and local var
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+[0-9a-f]+: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 03 0d ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rcx +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x44
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden but not local var
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+[0-9a-f]+: 64 48 8b 0c 25 00 00[ ]+mov %fs:0x0,%rcx
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+[0-9a-f]+: 00 00 *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 48 03 0d ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rcx +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x64
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# Direct access through %fs
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# IE against global var
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+[0-9a-f]+: 48 8b 0d ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rcx +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 sg5
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 48 8b 11[ ]+mov %fs:\(%rcx\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against local var
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+[0-9a-f]+: 4c 8b 15 ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%r10 +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x30
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 4d 8b 22[ ]+mov %fs:\(%r10\),%r12
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden and local var
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+[0-9a-f]+: 48 8b 15 ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rdx +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x50
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 48 8b 12[ ]+mov %fs:\(%rdx\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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# IE against hidden but not local var
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+[0-9a-f]+: 48 8b 0d ([0-9a-f]{2} ){4}[ ]+mov 0x[0-9a-f]+\(%rip\),%rcx +# [0-9a-f]+ <.*>
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# -> R_X86_64_TPOFF64 *ABS*+0x70
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 64 48 8b 11[ ]+mov %fs:\(%rcx\),%rdx
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: 90[ ]+nop *
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+[0-9a-f]+: c9[ ]+leave *
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+[0-9a-f]+: c3[ ]+ret *
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