可执行文件中不同指令的细分

问题描述

除了mov，add，call，...等更常见的指令外，我很好奇1500 or so instructions中最常用的指令（似乎有1500万）。我编写了以下一线代码来检查python中一些常见的linux程序的计数（可以将其与更改脚本中可执行文件的路径一起使用）：

# need lxml installed: https://pypi.org/project/lxml/
$ python -c "import re,subprocess,requests; from lxml import html;xmap={x.text.lower(): 'https://www.felixcloutier.com/x86/' + x.attrib['href'] for x in html.fromstring(requests.get('https://www.felixcloutier.com/x86/index.html').content).xpath('//td/a')}; from collections import Counter; print('\n'.join([f'{k+1:>4}. {v[0]:<8} - {v[1]} - {xmap.get(v[0])}' for k,v in enumerate(Counter(re.findall(r'\t(\w{3,9})',subprocess.check_output('objdump -d -Mintel /bin/ls',shell=True).decode('utf-8'))).most_common())]))"

它给了我

   1. mov      - 5734 - https://www.felixcloutier.com/x86/./MOV-2.html
   2. cmp      - 1236 - https://www.felixcloutier.com/x86/./CMP.html
   3. call     - 1137 - https://www.felixcloutier.com/x86/./CALL.html
   4. jmp      - 1115 - https://www.felixcloutier.com/x86/./JMP.html
   5. nop      - 959 - https://www.felixcloutier.com/x86/./NOP.html
   6. test     - 949 - https://www.felixcloutier.com/x86/./TEST.html
   7. lea      - 909 - https://www.felixcloutier.com/x86/./LEA.html
   8. xor      - 769 - https://www.felixcloutier.com/x86/./XOR.html
   9. jne      - 717 - None
  10. pop      - 682 - https://www.felixcloutier.com/x86/./POP.html
  11. push     - 646 - https://www.felixcloutier.com/x86/./PUSH.html
  12. add      - 570 - https://www.felixcloutier.com/x86/./ADD.html
  13. sub      - 381 - https://www.felixcloutier.com/x86/./SUB.html
  14. movzx    - 267 - https://www.felixcloutier.com/x86/./MOVZX.html
  15. ret      - 263 - https://www.felixcloutier.com/x86/./RET.html
  16. sete     - 158 - None
  17. and      - 155 - https://www.felixcloutier.com/x86/./AND.html
  18. jbe      - 118 - None
  19. xchg     - 88 - https://www.felixcloutier.com/x86/./XCHG.html
  20. repz     - 83 - https://www.felixcloutier.com/x86/./REP:REPE:REPZ:REPNE:REPNZ.html
  21. jae      - 82 - None
  22. movsxd   - 59 - https://www.felixcloutier.com/x86/./MOVSX:MOVSXD.html
  23. cmove    - 58 - None
  24. shr      - 53 - https://www.felixcloutier.com/x86/./SAL:SAR:SHL:SHR.html
  25. sar      - 46 - https://www.felixcloutier.com/x86/./SAL:SAR:SHL:SHR.html
  26. mul      - 43 - https://www.felixcloutier.com/x86/./MUL.html
  27. imul     - 40 - https://www.felixcloutier.com/x86/./IMUL.html
  28. shl      - 38 - https://www.felixcloutier.com/x86/./SAL:SAR:SHL:SHR.html
  29. jle      - 33 - None
  30. setne    - 32 - None
  31. movabs   - 29 - None
  32. div      - 28 - https://www.felixcloutier.com/x86/./DIV.html
  33. sbb      - 24 - https://www.felixcloutier.com/x86/./SBB.html
  34. pxor     - 24 - https://www.felixcloutier.com/x86/./PXOR.html
  35. fstp     - 22 - https://www.felixcloutier.com/x86/./FST:FSTP.html
  36. cmovne   - 21 - None
  37. movsx    - 20 - https://www.felixcloutier.com/x86/./MOVSX:MOVSXD.html
  38. cvtsi2ss - 20 - https://www.felixcloutier.com/x86/./CVTSI2SS.html
  39. jns      - 18 - None
  40. ucomiss  - 18 - https://www.felixcloutier.com/x86/./UCOMISS.html
  41. fld      - 18 - https://www.felixcloutier.com/x86/./FLD.html
  42. movdqa   - 15 - https://www.felixcloutier.com/x86/./MOVDQA:VMOVDQA32:VMOVDQA64.html
  43. not      - 14 - https://www.felixcloutier.com/x86/./NOT.html
  44. cmovae   - 14 - None
  45. cmovns   - 13 - None
  46. cdqe     - 11 - https://www.felixcloutier.com/x86/./CBW:CWDE:CDQE.html
  47. addss    - 11 - https://www.felixcloutier.com/x86/./ADDSS.html
  48. movups   - 10 - https://www.felixcloutier.com/x86/./MOVUPS.html
  49. movss    - 10 - https://www.felixcloutier.com/x86/./MOVSS.html
  50. movaps   - 10 - https://www.felixcloutier.com/x86/./MOVAPS.html
  51. jge      - 8 - None
  52. setb     - 8 - None
  53. cvttss2si - 8 - https://www.felixcloutier.com/x86/./CVTTSS2SI.html
  54. mulss    - 8 - https://www.felixcloutier.com/x86/./MULSS.html
  55. neg      - 7 - https://www.felixcloutier.com/x86/./NEG.html
  56. cmovs    - 6 - None
  57. fild     - 6 - https://www.felixcloutier.com/x86/./FILD.html
  58. fadd     - 5 - https://www.felixcloutier.com/x86/./FADD:FADDP:FIADD.html
  59. setl     - 5 - None
  60. cmovb    - 4 - None
  61. seta     - 4 - None
  62. movdqu   - 4 - https://www.felixcloutier.com/x86/./MOVDQU:VMOVDQU8:VMOVDQU16:VMOVDQU32:VMOVDQU64.html
  63. cvtsi2sd - 4 - https://www.felixcloutier.com/x86/./CVTSI2SD.html
  64. subss    - 4 - https://www.felixcloutier.com/x86/./SUBSS.html
  65. fldcw    - 4 - https://www.felixcloutier.com/x86/./FLDCW.html
  66. fxch     - 4 - https://www.felixcloutier.com/x86/./FXCH.html
  67. fucomip  - 4 - https://www.felixcloutier.com/x86/./FCOMI:FCOMIP:FUCOMI:FUCOMIP.html
  68. fmul     - 4 - https://www.felixcloutier.com/x86/./FMUL:FMULP:FIMUL.html
  69. seto     - 4 - None
  70. jno      - 4 - None
  71. setg     - 3 - None
  72. cmovl    - 3 - None
  73. mulsd    - 2 - https://www.felixcloutier.com/x86/./MULSD.html
  74. addsd    - 2 - https://www.felixcloutier.com/x86/./ADDSD.html
  75. divss    - 2 - https://www.felixcloutier.com/x86/./DIVSS.html
  76. fucomi   - 2 - https://www.felixcloutier.com/x86/./FCOMI:FCOMIP:FUCOMI:FUCOMIP.html
  77. fnstcw   - 2 - https://www.felixcloutier.com/x86/./FSTCW:FNSTCW.html
  78. fistp    - 2 - https://www.felixcloutier.com/x86/./FIST:FISTP.html
  79. fdivrp   - 2 - https://www.felixcloutier.com/x86/./FDIVR:FDIVRP:FIDIVR.html
  80. repnz    - 1 - https://www.felixcloutier.com/x86/./REP:REPE:REPZ:REPNE:REPNZ.html
  81. hlt      - 1 - https://www.felixcloutier.com/x86/./HLT.html
  82. setbe    - 1 - None
  83. movs     - 1 - https://www.felixcloutier.com/x86/./MOVS:MOVSB:MOVSW:MOVSD:MOVSQ.html
  84. cmovbe   - 1 - None
  85. rep      - 1 - https://www.felixcloutier.com/x86/./REP:REPE:REPZ:REPNE:REPNZ.html
  86. cmovge   - 1 - None
  87. ror      - 1 - https://www.felixcloutier.com/x86/./RCL:RCR:ROL:ROR.html
  88. divsd    - 1 - https://www.felixcloutier.com/x86/./DIVSD.html
  89. fsub     - 1 - https://www.felixcloutier.com/x86/./FSUB:FSUBP:FISUB.html
  90. fmulp    - 1 - https://www.felixcloutier.com/x86/./FMUL:FMULP:FIMUL.html
  91. fdivp    - 1 - https://www.felixcloutier.com/x86/./FDIV:FDIVP:FIDIV.html
  92. cmova    - 1 - None
  93. cmovg    - 1 - None
  94. cmovle   - 1 - None
  95. cdq      - 1 - https://www.felixcloutier.com/x86/./CWD:CDQ:CQO.html
  96. idiv     - 1 - https://www.felixcloutier.com/x86/./IDIV.html
  97. rol      - 1 - https://www.felixcloutier.com/x86/./RCL:RCR:ROL:ROR.html

我可能应该对指令进行更好的分组，以便cc项目找到其正确的链接（例如setbe-> setcc）。奇怪的是，作为汇编的超级新手，大多数说明对我来说似乎都很熟悉（不像Intel手册页上的90％那样）。

因此，我的问题是，大多数更深奥的x86指令的上下文是什么？我想也许图形或天气预报系统可以利用100％的浮点指令。但是这些指示是如何产生的-例如，将它们全部组合在一起，是否会被不同行业使用？

解决方法

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assembly instruction-set intel

可执行文件中不同指令的细分

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