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Added FDIV/FDIVR instructions (mirroring the arrangement of the FSUB/FSUBR instructions)

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This commit is contained in:
Jeff Parsons 2015-11-22 17:13:32 -08:00
commit 16e77d9b10
1 changed files with 21 additions and 9 deletions
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30
modules/pcjs/lib/x86fpu.js
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@ -448,37 +448,43 @@ X86FPU.FDIVlr = function()
*/ */
X86FPU.FDIVsr = function() X86FPU.FDIVsr = function()
{ {
this.opUnimplemented(); this.setST(0, this.doDivide(this.getST(0), this.getSRFromEA()));
}; };
/** /**
* FDIVst() * FDIVst()
* *
* This is for encoding 0xD8,0xF0-0xF7 ("FDIV ST,ST(i)"): ST(0) <- ST(0) / ST(i)
*
* @this {X86FPU} * @this {X86FPU}
*/ */
X86FPU.FDIVst = function() X86FPU.FDIVst = function()
{ {
this.opUnimplemented(); this.setST(0, this.doDivide(this.getST(0), this.getST(this.iStack)));
}; };
/** /**
* FDIVsti() * FDIVsti()
* *
* This is for encoding 0xDC,0xF8-0xFF ("FDIV ST(i),ST"): ST(i) <- ST(i) / ST(0)
*
* @this {X86FPU} * @this {X86FPU}
*/ */
X86FPU.FDIVsti = function() X86FPU.FDIVsti = function()
{ {
this.opUnimplemented(); this.setST(this.iStack, this.doDivide(this.getST(this.iStack), this.getST(0)));
}; };
/** /**
* FDIVPsti() * FDIVPsti()
* *
* This is for encoding 0xDE,0xF8-0xFF ("FDIVP ST(i),ST"): ST(i) <- ST(i) / ST(0), POP
*
* @this {X86FPU} * @this {X86FPU}
*/ */
X86FPU.FDIVPsti = function() X86FPU.FDIVPsti = function()
{ {
this.opUnimplemented(); if (this.setST(this.iStack, this.doDivide(this.getST(this.iStack), this.getST(0)))) this.popValue();
}; };
/** /**
@ -488,7 +494,7 @@ X86FPU.FDIVPsti = function()
*/ */
X86FPU.FDIVRlr = function() X86FPU.FDIVRlr = function()
{ {
this.opUnimplemented(); this.setST(0, this.doDivide(this.getLRFromEA(), this.getST(0)));
}; };
/** /**
@ -498,37 +504,43 @@ X86FPU.FDIVRlr = function()
*/ */
X86FPU.FDIVRsr = function() X86FPU.FDIVRsr = function()
{ {
this.opUnimplemented(); this.setST(0, this.doDivide(this.getSRFromEA(), this.getST(0)));
}; };
/** /**
* FDIVRst() * FDIVRst()
* *
* This is for encoding 0xD8,0xF8-0xFF ("FDIVR ST,ST(i)"): ST(0) <- ST(i) / ST(0)
*
* @this {X86FPU} * @this {X86FPU}
*/ */
X86FPU.FDIVRst = function() X86FPU.FDIVRst = function()
{ {
this.opUnimplemented(); this.setST(0, this.doDivide(this.getST(this.iStack), this.getST(0)));
}; };
/** /**
* FDIVRsti() * FDIVRsti()
* *
* This is for encoding 0xDC,0xF0-0xF7 ("FDIVR ST(i),ST"): ST(i) <- ST(0) / ST(i)
*
* @this {X86FPU} * @this {X86FPU}
*/ */
X86FPU.FDIVRsti = function() X86FPU.FDIVRsti = function()
{ {
this.opUnimplemented(); this.setST(this.iStack, this.doDivide(this.getST(0), this.getST(this.iStack)));
}; };
/** /**
* FDIVRPsti() * FDIVRPsti()
* *
* This is for encoding 0xDE,0xF0-0xE7 ("FDIVRP ST(i),ST"): ST(i) <- ST(0) / ST(i), POP
*
* @this {X86FPU} * @this {X86FPU}
*/ */
X86FPU.FDIVRPsti = function() X86FPU.FDIVRPsti = function()
{ {
this.opUnimplemented(); if (this.setST(this.iStack, this.doDivide(this.getST(0), this.getST(this.iStack)))) this.popValue();
}; };
/** /**