使用uiCA检测JCC erratum未定位0x7e处cmp+je问题的问询
关于uiCA未检测到JCC erratum问题的疑问
我尝试使用uiCA工具检测代码中的JCC erratum问题,却遇到异常情况:位于地址0x7e(十进制126)处的cmp+je指令序列未被检测出JCC erratum问题。
相关代码片段:
7e: 3c 2b cmp al,0x2b 80: 74 de je 0x60
完整待检测代码:
0000000000000000 <.text>: 0: 49 89 d0 mov r8,rdx 3: 48 31 c0 xor rax,rax 6: 49 89 00 mov QWORD PTR [r8],rax 9: 49 89 40 08 mov QWORD PTR [r8+0x8],rax d: 49 89 40 10 mov QWORD PTR [r8+0x10],rax 11: b9 21 00 00 00 mov ecx,0x21 16: 48 8d 7f 3f lea rdi,[rdi+0x3f] 1a: 48 83 e7 c0 and rdi,0xffffffffffffffc0 1e: 49 89 f9 mov r9,rdi 21: 49 89 78 18 mov QWORD PTR [r8+0x18],rdi 25: 48 8b 06 mov rax,QWORD PTR [rsi] 28: 48 ba 68 74 74 70 73 movabs rdx,0x2f2f3a7370747468 2f: 3a 2f 2f 32: 48 39 d0 cmp rax,rdx 35: 75 33 jne 0x6a 37: 49 b9 ff ff ff ff ff movabs r9,0xffffffffff 3e: 00 00 00 41: 4c 21 ca and rdx,r9 44: 48 89 17 mov QWORD PTR [rdi],rdx 47: 41 c6 00 05 mov BYTE PTR [r8],0x5 4b: 48 83 c7 40 add rdi,0x40 4f: 48 83 c6 08 add rsi,0x8 53: 49 89 f9 mov r9,rdi 56: e9 af 00 00 00 jmp 0x10a 5b: 90 nop 5c: 90 nop 5d: 90 nop 5e: 90 nop 5f: 90 nop 60: 88 07 mov BYTE PTR [rdi],al 62: 48 83 c7 01 add rdi,0x1 66: 48 83 c6 01 add rsi,0x1 6a: 0f b6 06 movzx eax,BYTE PTR [rsi] 6d: 8d 50 9f lea edx,[rax-0x61] 70: 80 fa 1a cmp dl,0x1a 73: 72 eb jb 0x60 75: 48 8d 50 d0 lea rdx,[rax-0x30] 79: 80 fa 0a cmp dl,0xa 7c: 72 e2 jb 0x60 7e: 3c 2b cmp al,0x2b 80: 74 de je 0x60 82: 3c 2d cmp al,0x2d 84: 74 da je 0x60 86: 3c 2e cmp al,0x2e 88: 74 d6 je 0x60 8a: 3c 3a cmp al,0x3a 8c: 74 12 je 0xa0 8e: 8d 50 bf lea edx,[rax-0x41] 91: 80 fa 1a cmp dl,0x1a 94: 73 4a jae 0xe0 96: 04 20 add al,0x20 98: eb c6 jmp 0x60
测试使用的工具为uiCA。
请问这是uiCA的bug还是我遗漏了某些关键点?
内容的提问来源于stack exchange,提问作者HelloGUI
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