Some FPU corrections (due to 8087 datasheet errors) and additions
This commit is contained in:
Jeff Parsons
parent
945da70267
commit
c47fba7b0c
2 changed files with 75 additions and 50 deletions
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@ -1129,7 +1129,7 @@ if (DEBUGGER) {
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0x30: [Debugger.FINS.FLD, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT],
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0x31: [Debugger.FINS.FXCH, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT],
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0x32: [Debugger.FINS.FNOP],
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0x33: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT], // Obsolete decoding
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0x33: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT], // Obsolete encoding
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0x40: [Debugger.FINS.FCHS],
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0x41: [Debugger.FINS.FABS],
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0x44: [Debugger.FINS.FTST],
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@ -1188,12 +1188,12 @@ if (DEBUGGER) {
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0x07: [Debugger.FINS.FDIVR, Debugger.TYPE_MODRM | Debugger.TYPE_LREAL | Debugger.TYPE_IN],
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0x30: [Debugger.FINS.FADD, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x31: [Debugger.FINS.FMUL, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x32: [Debugger.FINS.FCOM, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete decoding
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0x33: [Debugger.FINS.FCOMP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete decoding
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0x34: [Debugger.FINS.FSUB, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x35: [Debugger.FINS.FSUBR, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x36: [Debugger.FINS.FDIV, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x37: [Debugger.FINS.FDIVR, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN]
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0x32: [Debugger.FINS.FCOM, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete encoding
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0x33: [Debugger.FINS.FCOMP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete encoding
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0x34: [Debugger.FINS.FSUBR, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x35: [Debugger.FINS.FSUB, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x36: [Debugger.FINS.FDIVR, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x37: [Debugger.FINS.FDIV, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN]
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},
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0xDD: {
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0x00: [Debugger.FINS.FLD, Debugger.TYPE_MODRM | Debugger.TYPE_LREAL | Debugger.TYPE_IN],
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@ -1203,7 +1203,7 @@ if (DEBUGGER) {
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0x06: [Debugger.FINS.FSAVE, Debugger.TYPE_MODRM | Debugger.TYPE_FPU | Debugger.TYPE_OUT],
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0x07: [Debugger.FINS.FSTSW, Debugger.TYPE_MODRM | Debugger.TYPE_SHORT | Debugger.TYPE_OUT],
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0x30: [Debugger.FINS.FFREE, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN],
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0x31: [Debugger.FINS.FXCH, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT], // Obsolete decoding
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0x31: [Debugger.FINS.FXCH, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT], // Obsolete encoding
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0x32: [Debugger.FINS.FST, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN],
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0x33: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN]
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},
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@ -1218,12 +1218,12 @@ if (DEBUGGER) {
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0x07: [Debugger.FINS.FIDIVR, Debugger.TYPE_MODRM | Debugger.TYPE_SHORT | Debugger.TYPE_IN],
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0x30: [Debugger.FINS.FADDP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x31: [Debugger.FINS.FMULP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x32: [Debugger.FINS.FCOMP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete decoding
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0x32: [Debugger.FINS.FCOMP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete encoding
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0x33: [Debugger.FINS.FCOMPP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN],
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0x34: [Debugger.FINS.FSUBP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x35: [Debugger.FINS.FSUBRP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x36: [Debugger.FINS.FDIVP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x37: [Debugger.FINS.FDIVRP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN]
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0x34: [Debugger.FINS.FSUBRP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x35: [Debugger.FINS.FSUBP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x36: [Debugger.FINS.FDIVRP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN],
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0x37: [Debugger.FINS.FDIVP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT, Debugger.TYPE_IMPREG | Debugger.TYPE_ST | Debugger.TYPE_IN]
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},
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0xDF: {
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0x00: [Debugger.FINS.FILD, Debugger.TYPE_MODRM | Debugger.TYPE_SHORT | Debugger.TYPE_IN],
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@ -1233,10 +1233,10 @@ if (DEBUGGER) {
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0x05: [Debugger.FINS.FILD, Debugger.TYPE_MODRM | Debugger.TYPE_LINT | Debugger.TYPE_IN],
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0x06: [Debugger.FINS.FBSTP, Debugger.TYPE_MODRM | Debugger.TYPE_DEC18 | Debugger.TYPE_OUT],
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0x07: [Debugger.FINS.FISTP, Debugger.TYPE_MODRM | Debugger.TYPE_LINT | Debugger.TYPE_OUT],
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0x30: [Debugger.FINS.FFREEP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete decoding
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0x31: [Debugger.FINS.FXCH, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT], // Obsolete decoding
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0x32: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete decoding
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0x33: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete decoding
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0x30: [Debugger.FINS.FFREEP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete encoding
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0x31: [Debugger.FINS.FXCH, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_OUT], // Obsolete encoding
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0x32: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete encoding
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0x33: [Debugger.FINS.FSTP, Debugger.TYPE_IMPREG | Debugger.TYPE_STREG | Debugger.TYPE_IN], // Obsolete encoding
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0x34: [Debugger.FINS.FSTSWAX, Debugger.TYPE_80287]
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}
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};
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@ -245,7 +245,7 @@ X86FPU.FADDsti = function()
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*/
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X86FPU.FADDPsti = function()
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{
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this.opUnimplemented();
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if (this.setST(this.iStack, this.doAdd(this.getST(this.iStack), this.getST(0)))) this.popValue();
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};
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/**
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@ -374,9 +374,7 @@ X86FPU.FCOMPsr = function()
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*/
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X86FPU.FCOMPst = function()
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{
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// if (this.opStop()) return; // for untested instructions: stops the CPU if it's running, but not if single-stepping
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this.doCompare(this.getST(0), this.getST(this.iStack));
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this.popValue();
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if (this.doCompare(this.getST(0), this.getST(this.iStack))) this.popValue();
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};
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/**
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@ -404,13 +402,13 @@ X86FPU.FCOMP8087 = function()
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};
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/**
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* FCOMPPsti()
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* FCOMPP()
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*
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* @this {X86FPU}
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*/
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X86FPU.FCOMPPsti = function()
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X86FPU.FCOMPP = function()
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{
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this.opUnimplemented();
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if (this.doCompare(this.getST(0), this.getST(1)) && this.popValue() != null) this.popValue();
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};
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/**
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@ -1249,9 +1247,7 @@ X86FPU.FSTPsr = function()
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*/
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X86FPU.FSTPsti = function()
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{
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if (this.setST(this.iStack, this.getST(0))) {
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this.popValue();
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}
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if (this.setST(this.iStack, this.getST(0))) this.popValue();
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};
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/**
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@ -1322,7 +1318,7 @@ X86FPU.FSTSWAX287 = function()
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*/
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X86FPU.FSUBlr = function()
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{
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this.opUnimplemented();
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this.setST(0, this.doSubtract(this.getST(0), this.getLRFromEA()));
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};
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/**
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@ -1332,37 +1328,43 @@ X86FPU.FSUBlr = function()
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*/
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X86FPU.FSUBsr = function()
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{
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this.opUnimplemented();
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this.setST(0, this.doSubtract(this.getST(0), this.getSRFromEA()));
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};
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/**
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* FSUBst()
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*
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* This is for encoding 0xD8,0xE0-0xE7 ("FSUB ST,ST(i)"): ST(0) <- ST(0) - ST(i)
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*
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* @this {X86FPU}
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*/
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X86FPU.FSUBst = function()
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{
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this.opUnimplemented();
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this.setST(0, this.doSubtract(this.getST(0), this.getST(this.iStack)));
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};
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/**
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* FSUBsti()
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*
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* This is for encoding 0xDC,0xE8-0xEF ("FSUB ST(i),ST"): ST(i) <- ST(0) - ST(i)
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*
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* @this {X86FPU}
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*/
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X86FPU.FSUBsti = function()
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{
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this.opUnimplemented();
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this.setST(this.iStack, this.doSubtract(this.getST(0), this.getST(this.iStack)));
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};
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/**
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* FSUBPsti()
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*
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* This is for encoding 0xDE,0xE8-0xEF ("FSUBP ST(i),ST"): ST(i) <- ST(0) - ST(i), POP
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*
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* @this {X86FPU}
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*/
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X86FPU.FSUBPsti = function()
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{
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this.opUnimplemented();
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if (this.setST(this.iStack, this.doSubtract(this.getST(0), this.getST(this.iStack)))) this.popValue();
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};
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/**
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@ -1372,7 +1374,7 @@ X86FPU.FSUBPsti = function()
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*/
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X86FPU.FSUBRlr = function()
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{
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this.opUnimplemented();
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this.setST(0, this.doSubtract(this.getLRFromEA(), this.getST(0)));
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};
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/**
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@ -1382,22 +1384,26 @@ X86FPU.FSUBRlr = function()
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*/
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X86FPU.FSUBRsr = function()
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{
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this.opUnimplemented();
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this.setST(0, this.doSubtract(this.getSRFromEA(), this.getST(0)));
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};
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/**
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* FSUBRst()
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*
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* This is for encoding 0xD8,0xE8-0xEF ("FSUBR ST,ST(i)"): ST(0) <- ST(i) - ST(0)
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*
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* @this {X86FPU}
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*/
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X86FPU.FSUBRst = function()
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{
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this.opUnimplemented();
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this.setST(0, this.doSubtract(this.getST(this.iStack), this.getST(0)));
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};
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/**
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* FSUBRsti()
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*
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* This is for encoding 0xDC,0xE0-0xE7 ("FSUBR ST(i),ST"): ST(i) <- ST(i) - ST(0)
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*
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* @this {X86FPU}
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*/
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X86FPU.FSUBRsti = function()
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@ -1408,13 +1414,13 @@ X86FPU.FSUBRsti = function()
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/**
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* FSUBRPsti()
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*
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* This is for encoding 0xDE,0xE0-0xE7 ("FSUBRP ST(i),ST"): ST(i) <- ST(i) - ST(0), POP
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*
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* @this {X86FPU}
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*/
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X86FPU.FSUBRPsti = function()
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{
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if (this.setST(this.iStack, this.doSubtract(this.getST(this.iStack), this.getST(0)))) {
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this.popValue();
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}
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if (this.setST(this.iStack, this.doSubtract(this.getST(this.iStack), this.getST(0)))) this.popValue();
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};
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/**
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@ -1466,7 +1472,9 @@ X86FPU.FXAM = function()
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*/
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X86FPU.FXCHsti = function()
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{
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this.opUnimplemented();
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var tmp = this.getST(0);
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this.setST(0, this.getST(this.iStack));
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this.setST(this.iStack, tmp);
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};
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/**
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@ -1708,6 +1716,12 @@ X86FPU.prototype.getRandomInt = function(min, max)
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/**
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* opStop(fError)
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*
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* Place this inside any opcode handler to stop the CPU from running the current instruction; eg:
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*
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* if (this.opStop()) return;
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*
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* You can still use the Debugger to single-step over the instruction; opStop() will return false in that case.
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*
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* @this {X86FPU}
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* @param {boolean} [fError]
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* @return {boolean} (true if there was an error or the CPU was running, false if not)
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@ -1990,6 +2004,7 @@ X86FPU.prototype.doDivide = function(dividend, divisor)
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* @this {X86FPU}
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* @param {number|null} operand1
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* @param {number|null} operand2
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* @return {boolean}
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*/
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X86FPU.prototype.doCompare = function(operand1, operand2)
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{
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@ -2006,7 +2021,9 @@ X86FPU.prototype.doCompare = function(operand1, operand2)
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}
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}
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this.regStatus = (this.regStatus & ~X86.FPU.STATUS.CC) | cc;
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return true;
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}
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return false;
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};
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/**
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@ -2030,14 +2047,16 @@ X86FPU.prototype.doSquareRoot = function(operand)
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};
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/**
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* roundInteger(operand, limit)
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* roundInteger(operand, max)
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*
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* NOTE: The max parameter is EXCLUSIVE, not inclusive (ie, the maximum positive integer is < max).
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*
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* @this {X86FPU}
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* @param {number|null} operand
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* @param {number} limit (ie, 0x8000, 0x80000000, or 0x8000000000000000)
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* @param {number} max (ie, 0x8000, 0x80000000, or 0x8000000000000000)
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* @return {boolean} true if intTmpLR was loaded, false if not
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*/
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X86FPU.prototype.roundInteger = function(operand, limit)
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X86FPU.prototype.roundInteger = function(operand, max)
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{
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var result;
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var rc = (this.regControl & X86.FPU.CONTROL.RC);
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@ -2053,18 +2072,18 @@ X86FPU.prototype.roundInteger = function(operand, limit)
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result = Math.ceil(operand);
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}
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if (result >= limit) {
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if (result >= max) {
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if (this.setException(X86.FPU.STATUS.OE)) return false;
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result = limit - 1;
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result = max - 1;
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}
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else if (result < -limit) {
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else if (result < -max) {
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if (this.setException(X86.FPU.STATUS.UE)) return false;
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result = -limit;
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result = -max;
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}
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this.intTmpLR[0] = result|0;
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if (limit > X86FPU.MAX_INT32) {
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if (max > X86FPU.MAX_INT32) {
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this.intTmpLR[1] = (result / 0x100000000)|0;
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if (!this.intTmpLR[1] && result < 0) this.intTmpLR[1] = -1;
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}
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@ -2791,7 +2810,10 @@ X86FPU.aaOps = {
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0x00: X86FPU.FADDlr, 0x01: X86FPU.FMULlr, 0x02: X86FPU.FCOMlr, 0x03: X86FPU.FCOMPlr,
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0x04: X86FPU.FSUBlr, 0x05: X86FPU.FSUBRlr, 0x06: X86FPU.FDIVlr, 0x07: X86FPU.FDIVRlr,
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0x30: X86FPU.FADDsti, 0x31: X86FPU.FMULsti, 0x32: X86FPU.FCOM8087, 0x33: X86FPU.FCOMP8087,
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0x34: X86FPU.FSUBsti, 0x35: X86FPU.FSUBRsti, 0x36: X86FPU.FDIVsti, 0x37: X86FPU.FDIVRsti
|
||||
/*
|
||||
* Intel's original 8087 datasheet had these forms of SUB and SUBR (and DIV and DIVR) swapped.
|
||||
*/
|
||||
0x34: X86FPU.FSUBRsti, 0x35: X86FPU.FSUBsti, 0x36: X86FPU.FDIVRsti, 0x37: X86FPU.FDIVsti
|
||||
},
|
||||
0xDD: {
|
||||
0x00: X86FPU.FLDlr, 0x02: X86FPU.FSTlr, 0x03: X86FPU.FSTPlr,
|
||||
|
|
@ -2801,8 +2823,11 @@ X86FPU.aaOps = {
|
|||
0xDE: {
|
||||
0x00: X86FPU.FIADD16, 0x01: X86FPU.FIMUL16, 0x02: X86FPU.FICOM16, 0x03: X86FPU.FICOMP16,
|
||||
0x04: X86FPU.FISUB16, 0x05: X86FPU.FISUBR16, 0x06: X86FPU.FIDIV16, 0x07: X86FPU.FIDIVR16,
|
||||
0x30: X86FPU.FADDPsti, 0x31: X86FPU.FMULPsti, 0x32: X86FPU.FCOMP8087, 0x33: X86FPU.FCOMPPsti,
|
||||
0x34: X86FPU.FSUBPsti, 0x35: X86FPU.FSUBRPsti, 0x36: X86FPU.FDIVPsti, 0x37: X86FPU.FDIVRPsti
|
||||
0x30: X86FPU.FADDPsti, 0x31: X86FPU.FMULPsti, 0x32: X86FPU.FCOMP8087, 0x33: X86FPU.FCOMPP,
|
||||
/*
|
||||
* Intel's original 8087 datasheet had these forms of SUBP and SUBRP (and DIVP and DIVRP) swapped.
|
||||
*/
|
||||
0x34: X86FPU.FSUBRPsti, 0x35: X86FPU.FSUBPsti, 0x36: X86FPU.FDIVRPsti, 0x37: X86FPU.FDIVPsti
|
||||
},
|
||||
0xDF: {
|
||||
0x00: X86FPU.FILD16, 0x02: X86FPU.FIST16, 0x03: X86FPU.FISTP16,
|
||||
|
|
|
|||
Loading…
Reference in a new issue