X86: (Re)Implemented SHRD.
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2 changed files with 32 additions and 21 deletions
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@ -831,7 +831,7 @@
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0x2: rsm_smm();
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0x3: Inst::BTS(Ev,Gv);
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0x4: Inst::SHRD(Ev,Gv,Ib);
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0x5: shrd_Ev_Gv_rCl();
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0x5: Inst::SHRD(Ev,Gv);
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//0x6: group16();
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0x6: decode MODRM_REG {
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0x0: fxsave();
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@ -220,38 +220,49 @@ def macroop SHR_P_R
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st t1, seg, riprel, disp
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};
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# SHRD will not set OF correctly when the shift count is 1.
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def macroop SHRD_R_R_I
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def macroop SHRD_R_R
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{
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srli t1, reg, imm, flags=(CF,)
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rori t2, regm, imm
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srli t3, regm, imm
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xor t2, t2, t3
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or reg, t1, t2
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mdbi regm, 0
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srd reg, reg, rcx, flags=(CF,OF,SF,ZF,PF)
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};
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# SHRD will not set OF correctly when the shift count is 1.
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def macroop SHRD_M_R_I
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def macroop SHRD_M_R
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{
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ldst t1, seg, sib, disp
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srli t1, t1, imm, flags=(CF,)
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rori t2, reg, imm
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srli t3, reg, imm
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xor t2, t2, t3
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or t1, t1, t2
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mdbi reg, 0
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srd t1, t1, rcx, flags=(CF,OF,SF,ZF,PF)
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st t1, seg, sib, disp
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};
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def macroop SHRD_P_R
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{
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rdip t7
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ldst t1, seg, riprel, disp
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mdbi reg, 0
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srd t1, t1, rcx, flags=(CF,OF,SF,ZF,PF)
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st t1, seg, riprel, disp
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};
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def macroop SHRD_R_R_I
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{
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mdbi regm, 0
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srdi reg, reg, imm, flags=(CF,OF,SF,ZF,PF)
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};
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def macroop SHRD_M_R_I
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{
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ldst t1, seg, sib, disp
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mdbi reg, 0
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srdi t1, t1, imm, flags=(CF,OF,SF,ZF,PF)
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st t1, seg, sib, disp
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};
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# SHRD will not set OF correctly when the shift count is 1.
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def macroop SHRD_P_R_I
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{
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rdip t7
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ldst t1, seg, riprel, disp
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srli t1, t1, imm, flags=(CF,)
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rori t2, reg, imm
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srli t3, reg, imm
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xor t2, t2, t3
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or t1, t1, t2
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mdbi reg, 0
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srdi t1, t1, imm, flags=(CF,OF,SF,ZF,PF)
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st t1, seg, riprel, disp
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};
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