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'origin/GP-3155_caheckman_PR-2810_Pokechu22_countleadingzeros'
(Closes #2810)
This commit is contained in:
Ryan Kurtz
2023-03-24 14:27:51 -04:00
parent 7e416ac789 945d91fc93
commit 9cf60faef0
94 changed files with 3604 additions and 3451 deletions
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47
Ghidra/Processors/x86/data/languages/lzcnt.sinc
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@@ -11,57 +11,22 @@ macro lzcntflags(input, output) {
:LZCNT Reg16, rm16 is vexMode=0 & opsize=0 & $(PRE_66) & $(PRE_F3) & byte=0x0F; byte=0xBD; Reg16 ... & rm16 {
countTmp:2 = 0;
inputTmp:2 = rm16;
<loopbegin>
if ((inputTmp & 0x8000) != 0) goto <loopend>;
countTmp = countTmp + 1;
inputTmp = (inputTmp << 1) | 1;
goto <loopbegin>;
<loopend>
lzcntflags(rm16, countTmp);
Reg16 = countTmp;
Reg16 = lzcount(rm16);
lzcntflags(rm16, Reg16);
}
:LZCNT Reg32, rm32 is vexMode=0 & opsize=1 & $(PRE_F3) & byte=0x0F; byte=0xBD; Reg32 ... & check_Reg32_dest ... & rm32 {
countTmp:4 = 0;
inputTmp:4 = rm32;
<loopbegin>
if ((inputTmp & 0x80000000) != 0) goto <loopend>;
countTmp = countTmp + 1;
inputTmp = (inputTmp << 1) | 1;
goto <loopbegin>;
<loopend>
lzcntflags(rm32, countTmp);
Reg32 = countTmp;
Reg32 = lzcount(rm32);
lzcntflags(rm32, Reg32);
build check_Reg32_dest;
}
@ifdef IA64
:LZCNT Reg64, rm64 is $(LONGMODE_ON) & vexMode=0 & opsize=2 & $(PRE_F3) & $(REX_W) & byte=0x0F; byte=0xBD; Reg64 ... & rm64 {
countTmp:8 = 0;
inputTmp:8 = rm64;
<loopbegin>
if ((inputTmp & 0x8000000000000000) != 0) goto <loopend>;
countTmp = countTmp + 1;
inputTmp = (inputTmp << 1) | 1;
goto <loopbegin>;
<loopend>
lzcntflags(rm64, countTmp);
Reg64 = countTmp;
Reg64 = lzcount(rm64);
lzcntflags(rm64, Reg64);
}
@endif