.text:004A78B1 and eax, 80000001h
.text:004A78B6 jns short loc_4A78BD
.text:004A78B8 dec eax
.text:004A78B9 or eax, 0FFFFFFFEh
.text:004A78BC inc eax
.text:004A78BD
.text:004A78BD loc_4A78BD:
.text:004A78BD jnz short loc_4A78D9
当你看到这段代码,它是什么意思呢?
我曾经在看雪的帖子上看到过相当好的解释,可是现在找不到了,很遗憾
那么只好自己记录下
阅读下面代码,你就懂得它的含义
18: if(i%2 == 0)
0041147C 8B 45 F8 mov eax,dword ptr [i]
0041147F 25 01 00 00 80 and eax,80000001h
00411484 79 05 jns main+6Bh (41148Bh)
00411486 48 dec eax
00411487 83 C8 FE or eax,0FFFFFFFEh
0041148A 40 inc eax
0041148B 85 C0 test eax,eax
0041148D 75 19 jne main+88h (4114A8h)
19: {
20:
21: count++;
0041148F A1 9C 90 41 00 mov eax,dword ptr [count]
00411494 83 C0 01 add eax,1
00411497 A3 9C 90 41 00 mov dword ptr [count],eax
22: sum += count;
0041149C 8B 45 EC mov eax,dword ptr [sum]
0041149F 03 05 9C 90 41 00 add eax,dword ptr [count]
004114A5 89 45 EC mov dword ptr [sum],eax
23: }
24: sum += count;
004114A8 8B 45 EC mov eax,dword ptr [sum]
004114AB 03 05 A0 90 41 00 add eax,dword ptr [count]
004114B1 89 45 EC mov dword ptr [sum],eax