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33 lines
716 B
Plaintext
33 lines
716 B
Plaintext
macro lzcntflags(input, output) {
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ZF = (output == 0);
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CF = (input == 0);
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# OF, SF, PF, AF are undefined
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}
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####
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#### LZCNT instructions
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####
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:LZCNT Reg16, rm16 is vexMode=0 & opsize=0 & $(PRE_66) & $(PRE_F3) & byte=0x0F; byte=0xBD; Reg16 ... & rm16 {
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Reg16 = lzcount(rm16);
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lzcntflags(rm16, Reg16);
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}
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:LZCNT Reg32, rm32 is vexMode=0 & opsize=1 & $(PRE_F3) & byte=0x0F; byte=0xBD; Reg32 ... & check_Reg32_dest ... & rm32 {
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Reg32 = lzcount(rm32);
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lzcntflags(rm32, Reg32);
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build check_Reg32_dest;
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}
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@ifdef IA64
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:LZCNT Reg64, rm64 is $(LONGMODE_ON) & vexMode=0 & opsize=2 & $(PRE_F3) & $(REX_W) & byte=0x0F; byte=0xBD; Reg64 ... & rm64 {
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Reg64 = lzcount(rm64);
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lzcntflags(rm64, Reg64);
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}
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@endif
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