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DSPLLE - small idleskip improvment for zelda

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5248 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Marko Pusljar
2010-03-28 17:10:36 +00:00
parent 4fb21aa137
commit 6bcae13ff8
5 changed files with 35 additions and 30 deletions
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39
Source/Core/DSPCore/Src/DspIntMultiplier.cpp
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@ -46,25 +46,25 @@ inline s64 dsp_get_multiply_prod(u16 a, u16 b, u8 sign)
return prod;
}
s64 dsp_multiply(u16 a, u16 b, u8 sign = 0)
inline s64 dsp_multiply(u16 a, u16 b, u8 sign = 0)
{
s64 prod = dsp_get_multiply_prod(a, b, sign);
return prod;
}
s64 dsp_multiply_add(u16 a, u16 b, u8 sign = 0)
inline s64 dsp_multiply_add(u16 a, u16 b, u8 sign = 0)
{
s64 prod = dsp_get_long_prod() + dsp_get_multiply_prod(a, b, sign);
return prod;
}
s64 dsp_multiply_sub(u16 a, u16 b, u8 sign = 0)
inline s64 dsp_multiply_sub(u16 a, u16 b, u8 sign = 0)
{
s64 prod = dsp_get_long_prod() - dsp_get_multiply_prod(a, b, sign);
return prod;
}
s64 dsp_multiply_mulx(u8 axh0, u8 axh1, u16 val1, u16 val2)
inline s64 dsp_multiply_mulx(u8 axh0, u8 axh1, u16 val1, u16 val2)
{
s64 result;
@ -122,7 +122,7 @@ void clrp(const UDSPInstruction opc)
// 1000 0101 xxxx xxxx
// Test prod regs value.
//
// flags out: xx xx0x <- CF??
// flags out: --xx xx0x
void tstprod(const UDSPInstruction opc)
{
s64 prod = dsp_get_long_prod();
@ -136,7 +136,7 @@ void tstprod(const UDSPInstruction opc)
// 0110 111d xxxx xxxx
// Moves multiply product from $prod register to accumulator $acD register.
//
// flags out: xx xx00
// flags out: --xx xx0x
void movp(const UDSPInstruction opc)
{
u8 dreg = (opc >> 8) & 0x1;
@ -154,7 +154,7 @@ void movp(const UDSPInstruction opc)
// Moves negative of multiply product from $prod register to accumulator
// $acD register.
//
// flags out: xx xx0x <- CF??
// flags out: --xx xx0x
void movnp(const UDSPInstruction opc)
{
u8 dreg = (opc >> 8) & 0x1;
@ -172,7 +172,7 @@ void movnp(const UDSPInstruction opc)
// Moves multiply product from $prod register to accumulator $acD
// register and sets $acD.l to 0
//
// flags out: xx xx0x <- CF??
// flags out: --xx xx0x
void movpz(const UDSPInstruction opc)
{
u8 dreg = (opc >> 8) & 0x01;
@ -190,12 +190,13 @@ void movpz(const UDSPInstruction opc)
// Adds secondary accumulator $axS to product register and stores result
// in accumulator register. Low 16-bits of $acD ($acD.l) are set to 0.
//
// flags out: ?-xx xx??
// flags out: --xx xx0x
void addpaxz(const UDSPInstruction opc)
{
u8 dreg = (opc >> 8) & 0x1;
u8 sreg = (opc >> 9) & 0x1;
s64 oldprod = dsp_get_long_prod();
s64 prod = dsp_get_long_prod_round_prodl();
s64 ax = dsp_get_long_acx(sreg);
s64 res = prod + (ax & ~0xffff);
@ -204,7 +205,7 @@ void addpaxz(const UDSPInstruction opc)
dsp_set_long_acc(dreg, res);
res = dsp_get_long_acc(dreg);
Update_SR_Register64(res);
Update_SR_Register64(res, isCarry(oldprod, res), false);
}
//----
@ -246,7 +247,7 @@ void mul(const UDSPInstruction opc)
// $axS.l of secondary accumulator $axS by high part $axS.h of secondary
// accumulator $axS (treat them both as signed).
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulac(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -270,7 +271,7 @@ void mulac(const UDSPInstruction opc)
// $axS.l of secondary accumulator $axS by high part $axS.h of secondary
// accumulator $axS (treat them both as signed).
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulmv(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -295,7 +296,7 @@ void mulmv(const UDSPInstruction opc)
// accumulator $axS by high part $axS.h of secondary accumulator $axS (treat
// them both as signed).
//
// flags out: xx xx0x
// flags out: --xx xx0x
void mulmvz(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -339,7 +340,7 @@ void mulx(const UDSPInstruction opc)
// $ax0 by one part $ax1. Part is selected by S and
// T bits. Zero selects low part, one selects high part.
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulxac(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -364,7 +365,7 @@ void mulxac(const UDSPInstruction opc)
// $ax0 by one part $ax1. Part is selected by S and
// T bits. Zero selects low part, one selects high part.
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulxmv(const UDSPInstruction opc)
{
u8 rreg = ((opc >> 8) & 0x1);
@ -390,7 +391,7 @@ void mulxmv(const UDSPInstruction opc)
// Part is selected by S and T bits. Zero selects low part,
// one selects high part.
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulxmvz(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -435,7 +436,7 @@ void mulc(const UDSPInstruction opc)
// secondary accumulator $axS (treat them both as signed). Add product
// register before multiplication to accumulator $acR.
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulcac(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -461,7 +462,7 @@ void mulcac(const UDSPInstruction opc)
// register before multiplication to accumulator $acR.
// possible mistake in duddie's doc axT.h rather than axS.h
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulcmv(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;
@ -488,7 +489,7 @@ void mulcmv(const UDSPInstruction opc)
// register before multiplication to accumulator $acR, set low part of
// accumulator $acR.l to zero.
//
// flags out: xx xx00
// flags out: --xx xx0x
void mulcmvz(const UDSPInstruction opc)
{
u8 rreg = (opc >> 8) & 0x1;