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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2945 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
nakeee 2009-04-09 22:29:59 +00:00
parent f0641ebe3f
commit a421ab0fd0
1 changed files with 39 additions and 13 deletions
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52
Source/Plugins/Plugin_DSP_LLE/Src/DSPInterpreter.cpp
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@ -589,7 +589,7 @@ void mulc(const UDSPInstruction& opc)
Update_SR_Register64(prod); Update_SR_Register64(prod);
} }
// MULCMVZ // MULCMVZ $acS.m, $axT.h, $acR
// 110s t01r xxxx xxxx // 110s t01r xxxx xxxx
// (fixed possible bug in duddie's description, s->t) // (fixed possible bug in duddie's description, s->t)
// Multiply mid part of accumulator register $acS.m by high part $axT.h of // Multiply mid part of accumulator register $acS.m by high part $axT.h of
@ -614,7 +614,7 @@ void mulcmvz(const UDSPInstruction& opc)
Update_SR_Register64(acc); Update_SR_Register64(acc);
} }
// MULCMV // MULCMV $acS.m, $axT.h, $acR
// 110s t11r xxxx xxxx // 110s t11r xxxx xxxx
// Multiply mid part of accumulator register $acS.m by high part $axT.h of // Multiply mid part of accumulator register $acS.m by high part $axT.h of
// secondary accumulator $axT (treat them both as signed). Move product // secondary accumulator $axT (treat them both as signed). Move product
@ -637,20 +637,22 @@ void mulcmv(const UDSPInstruction& opc)
Update_SR_Register64(tempProd); Update_SR_Register64(tempProd);
} }
// CMPAR // CMPAR $acS axR.h
// 1100 0001 xxxx xxxx
// Compares accumulator $acS with accumulator axR.h.
// Not described by Duddie's doc - at least not as a separate instruction. // Not described by Duddie's doc - at least not as a separate instruction.
void cmpar(const UDSPInstruction& opc) void cmpar(const UDSPInstruction& opc)
{ {
u8 rreg = ((opc.hex >> 12) & 0x1) + 0x1a; u8 rreg = ((opc.hex >> 12) & 0x1) + DSP_REG_AXH0;
u8 areg = (opc.hex >> 11) & 0x1; u8 sreg = (opc.hex >> 11) & 0x1;
// we compare // we compare
s64 rr = (s16)g_dsp.r[rreg]; s64 rr = (s16)g_dsp.r[rreg];
rr <<= 16; rr <<= 16;
s64 ar = dsp_get_long_acc(areg); s64 sr = dsp_get_long_acc(sreg);
Update_SR_Register64(ar - rr); Update_SR_Register64(sr - rr);
} }
// CMP // CMP
@ -1550,14 +1552,13 @@ void mulac(const UDSPInstruction& opc)
void mulmv(const UDSPInstruction& opc) void mulmv(const UDSPInstruction& opc)
{ {
u8 rreg = (opc.hex >> 8) & 0x1; u8 rreg = (opc.hex >> 8) & 0x1;
u8 sreg = ((opc.hex >> 11) & 0x1)
s64 prod = dsp_get_long_prod(); s64 prod = dsp_get_long_prod();
s64 acc = prod; s64 acc = prod;
dsp_set_long_acc(rreg, acc); dsp_set_long_acc(rreg, acc);
u8 areg = ((opc.hex >> 11) & 0x1) + 0x18; s64 val1 = (s16)g_dsp.r[sreg + DSP_REG_AXL0];
u8 breg = ((opc.hex >> 11) & 0x1) + 0x1a; s64 val2 = (s16)g_dsp.r[sreg + DSP_REG_AXH0];
s64 val1 = (s16)g_dsp.r[areg];
s64 val2 = (s16)g_dsp.r[breg];
prod = val1 * val2 * GetMultiplyModifier(); prod = val1 * val2 * GetMultiplyModifier();
@ -1566,6 +1567,12 @@ void mulmv(const UDSPInstruction& opc)
Update_SR_Register64(prod); Update_SR_Register64(prod);
} }
// MULMVZ $axS.l, $axS.h, $acR
// 1001 s01r xxxx xxxx
// Move product register to accumulator register $acR and clear low part
// of accumulator register $acR.l. Multiply low part $axS.l of secondary
// accumulator $axS by high part $axS.h of secondary accumulator $axS (treat
// them both as signed).
void mulmvz(const UDSPInstruction& opc) void mulmvz(const UDSPInstruction& opc)
{ {
u8 sreg = (opc.hex >> 11) & 0x1; u8 sreg = (opc.hex >> 11) & 0x1;
@ -1577,12 +1584,16 @@ void mulmvz(const UDSPInstruction& opc)
dsp_set_long_acc(rreg, acc); dsp_set_long_acc(rreg, acc);
// math prod // math prod
prod = (s64)g_dsp.r[0x18 + sreg] * (s64)g_dsp.r[0x1a + sreg] * GetMultiplyModifier(); prod = (s64)g_dsp.r[DSP_REG_AXL0 + sreg] * (s64)g_dsp.r[DSP_REG_AXH0 + sreg] * GetMultiplyModifier();
dsp_set_long_prod(prod); dsp_set_long_prod(prod);
Update_SR_Register64(prod); Update_SR_Register64(prod);
} }
// MULX $ax0.S, $ax1.T
// 101s t000 xxxx xxxx
// Multiply one part $ax0 by one part $ax1 (treat them both as signed).
// Part is selected by S and T bits. Zero selects low part, one selects high part.
void mulx(const UDSPInstruction& opc) void mulx(const UDSPInstruction& opc)
{ {
u8 sreg = ((opc.hex >> 12) & 0x1); u8 sreg = ((opc.hex >> 12) & 0x1);
@ -1597,6 +1608,11 @@ void mulx(const UDSPInstruction& opc)
Update_SR_Register64(prod); Update_SR_Register64(prod);
} }
// MULXAC $ax0.S, $ax1.T, $acR
// 101s t01r xxxx xxxx
// Add product register to accumulator register $acR. Multiply one part
// $ax0 by one part $ax1 (treat them both as signed). Part is selected by S and
// T bits. Zero selects low part, one selects high part.
void mulxac(const UDSPInstruction& opc) void mulxac(const UDSPInstruction& opc)
{ {
// add old prod to acc // add old prod to acc
@ -1617,7 +1633,11 @@ void mulxac(const UDSPInstruction& opc)
Update_SR_Register64(prod); Update_SR_Register64(prod);
} }
// MULXMV $ax0.S, $ax1.T, $acR
// 101s t11r xxxx xxxx
// Move product register to accumulator register $acR. Multiply one part
// $ax0 by one part $ax1 (treat them both as signed). Part is selected by S and
// T bits. Zero selects low part, one selects high part.
void mulxmv(const UDSPInstruction& opc) void mulxmv(const UDSPInstruction& opc)
{ {
// add old prod to acc // add old prod to acc
@ -1638,6 +1658,12 @@ void mulxmv(const UDSPInstruction& opc)
Update_SR_Register64(prod); Update_SR_Register64(prod);
} }
// MULXMV $ax0.S, $ax1.T, $acR
// 101s t01r xxxx xxxx
// Move product register to accumulator register $acR and clear low part
// of accumulator register $acR.l. Multiply one part $ax0 by one part $ax1 (treat
// them both as signed). Part is selected by S and T bits. Zero selects low part,
// one selects high part.
void mulxmvz(const UDSPInstruction& opc) void mulxmvz(const UDSPInstruction& opc)
{ {
// overwrite acc and clear low part // overwrite acc and clear low part