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DSPLLE - AR decrement fixed, +other small fixes 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5437 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Marko Pusljar 2010-05-07 19:32:16 +00:00
parent f72616daa3
commit f6ce87765f
6 changed files with 72 additions and 90 deletions
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14
Source/Core/DSPCore/Src/DSPIntExtOps.cpp
View File

@ -214,7 +214,7 @@ void lsm(const UDSPInstruction opc)
dsp_dmem_write(g_dsp.r[DSP_REG_AR3], g_dsp.r[sreg]);
writeToBackLog(0, dreg, dsp_dmem_read(g_dsp.r[DSP_REG_AR0]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX0 + DSP_REG_AR3]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX3]));
writeToBackLog(2, DSP_REG_AR0, dsp_increment_addr_reg(DSP_REG_AR0));
}
@ -233,7 +233,7 @@ void lsnm(const UDSPInstruction opc)
dsp_dmem_write(g_dsp.r[DSP_REG_AR3], g_dsp.r[sreg]);
writeToBackLog(0, dreg, dsp_dmem_read(g_dsp.r[DSP_REG_AR0]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX0 + DSP_REG_AR3]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX3]));
writeToBackLog(2, DSP_REG_AR0, dsp_increase_addr_reg(DSP_REG_AR0, (s16)g_dsp.r[DSP_REG_IX0]));
}
@ -286,7 +286,7 @@ void slm(const UDSPInstruction opc)
dsp_dmem_write(g_dsp.r[DSP_REG_AR0], g_dsp.r[sreg]);
writeToBackLog(0, dreg, dsp_dmem_read(g_dsp.r[DSP_REG_AR3]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX0 + DSP_REG_AR3]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX3]));
writeToBackLog(2, DSP_REG_AR0, dsp_increment_addr_reg(DSP_REG_AR0));
}
@ -304,7 +304,7 @@ void slnm(const UDSPInstruction opc)
dsp_dmem_write(g_dsp.r[DSP_REG_AR0], g_dsp.r[sreg]);
writeToBackLog(0, dreg, dsp_dmem_read(g_dsp.r[DSP_REG_AR3]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX0 + DSP_REG_AR3]));
writeToBackLog(1, DSP_REG_AR3, dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX3]));
writeToBackLog(2, DSP_REG_AR0, dsp_increase_addr_reg(DSP_REG_AR0, (s16)g_dsp.r[DSP_REG_IX0]));
}
@ -406,7 +406,7 @@ void ldm(const UDSPInstruction opc)
}
writeToBackLog(3, DSP_REG_AR3,
dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX0 + DSP_REG_AR3]));
dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX3]));
}
// LDNM $ax0.d, $ax1.r, @$arS
@ -438,7 +438,7 @@ void ldnm(const UDSPInstruction opc)
}
writeToBackLog(3, DSP_REG_AR3,
dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX0 + DSP_REG_AR3]));
dsp_increase_addr_reg(DSP_REG_AR3, (s16)g_dsp.r[DSP_REG_IX3]));
}
@ -483,7 +483,7 @@ void zeroWriteBackLog()
}
}
//needed for 0x3... (at least)..., + clrl
//needed for 0x3...
//ex. corner case -> 0x3060: main opcode modifies .m, and extended .l -> .l shoudnt be zeroed because of .m write...
void zeroWriteBackLogPreserveAcc(u8 acc)
{

83
Source/Core/DSPCore/Src/DSPIntUtil.h
View File

@ -54,6 +54,8 @@ inline bool dsp_SR_is_flag_set(int flag)
//
// HORRIBLE UGLINESS, someone please fix.
// See http://code.google.com/p/dolphin-emu/source/detail?r=3125
//
// increment, decrement 100% ok (as far as i can tell), increase, decrease still probs
inline u16 ToMask(u16 a)
{
@ -63,72 +65,71 @@ inline u16 ToMask(u16 a)
return a | (a >> 1);
}
inline s16 dsp_increment_addr_reg(int reg, s16 value)
inline u16 dsp_increment_addr_reg(u16 reg, u16 ar)
{
u16 tmb = ToMask(g_dsp.r[DSP_REG_WR0 + reg]);
u16 wr = g_dsp.r[DSP_REG_WR0 + reg];
u16 tmb = ToMask(wr);
if ((value & tmb) == tmb)
value ^= g_dsp.r[DSP_REG_WR0 + reg];
if ((ar & tmb) == tmb)
ar-=wr;
else
value++;
ar++;
return value;
return ar;
}
inline s16 dsp_increment_addr_reg(int reg)
inline u16 dsp_increment_addr_reg(u16 reg)
{
return dsp_increment_addr_reg(reg, g_dsp.r[reg]);
}
// See http://code.google.com/p/dolphin-emu/source/detail?r=3125
inline s16 dsp_decrement_addr_reg(int reg, s16 value)
inline u16 dsp_decrement_addr_reg(u16 reg, u16 ar)
{
// This one is easy. Looks like a hw implementation. Increment is worse...
if ((value & g_dsp.r[DSP_REG_WR0 + reg]) == 0)
value |= g_dsp.r[DSP_REG_WR0 + reg];
else
value--;
u16 wr = g_dsp.r[DSP_REG_WR0 + reg];
u16 tmb = ToMask(wr);
u16 min = (tmb+1-ar)&tmb;
return value;
if ((wr < min) || !min)
ar+=wr;
else
ar--;
return ar;
}
inline s16 dsp_decrement_addr_reg(int reg)
inline u16 dsp_decrement_addr_reg(u16 reg)
{
return dsp_decrement_addr_reg(reg, g_dsp.r[reg]);
}
inline s16 dsp_increase_addr_reg(int reg, s16 value)
inline u16 dsp_increase_addr_reg(u16 reg, s16 ix)
{
s16 tmp = g_dsp.r[reg];
u16 ar = g_dsp.r[reg];
// TODO: DO RIGHT!
if (value > 0) {
for (int i = 0; i < value; i++) {
tmp = dsp_increment_addr_reg(reg, tmp);
if (ix > 0) {
for (s32 i = 0; i < ix; i++) {
ar = dsp_increment_addr_reg(reg, ar);
}
} else if (value < 0) {
for (int i = 0; i < (int)(-value); i++) {
tmp = dsp_decrement_addr_reg(reg, tmp);
} else if (ix < 0) {
for (s32 i = 0; i < (-ix); i++) {
ar = dsp_decrement_addr_reg(reg, ar);
}
}
return tmp;
}
return ar;
}
inline s16 dsp_decrease_addr_reg(int reg, s16 value)
inline u16 dsp_decrease_addr_reg(u16 reg, s16 ix)
{
s16 tmp = g_dsp.r[reg];
u16 ar = g_dsp.r[reg];
// TODO: DO RIGHT!
if (value > 0) {
for (int i = 0; i < value; i++) {
tmp = dsp_decrement_addr_reg(reg, tmp);
if (ix > 0) {
for (s32 i = 0; i < ix; i++) {
ar = dsp_decrement_addr_reg(reg, ar);
}
} else if (value < 0) {
for (int i = 0; i < (int)(-value); i++) {
tmp = dsp_increment_addr_reg(reg, tmp);
} else if (ix < 0) {
for (s32 i = 0; i < (-ix); i++) {
ar = dsp_increment_addr_reg(reg, ar);
}
}
return tmp;
return ar;
}
// ---------------------------------------------------------------------------------------
@ -203,7 +204,7 @@ inline s64 dsp_get_long_prod()
ProfilerAddDelta(g_dsp.err_pc, 1);
#endif
s64 val = (s8)g_dsp.r[DSP_REG_PRODH];
s64 val = (s8)(u8)g_dsp.r[DSP_REG_PRODH];
val <<= 32;
s64 low_prod = g_dsp.r[DSP_REG_PRODM];
low_prod += g_dsp.r[DSP_REG_PRODM2];
@ -230,7 +231,7 @@ inline void dsp_set_long_prod(s64 val)
val >>= 16;
g_dsp.r[DSP_REG_PRODM] = (u16)val;
val >>= 16;
g_dsp.r[DSP_REG_PRODH] = (u16)val;
g_dsp.r[DSP_REG_PRODH] = (u8)val;
g_dsp.r[DSP_REG_PRODM2] = 0;
}

4
Source/Core/DSPCore/Src/DSPTables.cpp
View File

@ -295,8 +295,8 @@ const DSPOPCTemplate opcodes[] =
{"MADD", 0xf200, 0xfe00, DSPInterpreter::madd, NULL, 1 , 2, {{P_REG18, 1, 0, 8, 0x0100}, {P_REG1A, 1, 0, 8, 0x0100}}, true, false},
{"LSR16", 0xf400, 0xfe00, DSPInterpreter::lsr16, NULL, 1 , 1, {{P_ACC, 1, 0, 8, 0x0100}}, true, false},
{"MSUB", 0xf600, 0xfe00, DSPInterpreter::msub , NULL, 1 , 2, {{P_REG18, 1, 0, 8, 0x0100}, {P_REG1A, 1, 0, 8, 0x0100}}, true, false},
{"ADDPAXZ", 0xf800, 0xfc00, DSPInterpreter::addpaxz, NULL, 1 , 2, {{P_ACC, 1, 0, 9, 0x0200}, {P_AX, 1, 0, 8, 0x0100}}, true, false}, //Think the args are wrong
{"CLRL", 0xfc00, 0xfe00, DSPInterpreter::clrl, NULL, 1 , 1, {{P_ACCL, 1, 0, 11, 0x0800}}, true, false}, // clear acl0
{"ADDPAXZ", 0xf800, 0xfc00, DSPInterpreter::addpaxz, NULL, 1 , 2, {{P_ACC, 1, 0, 9, 0x0200}, {P_AX, 1, 0, 8, 0x0100}}, true, false},
{"CLRL", 0xfc00, 0xfe00, DSPInterpreter::clrl, NULL, 1 , 1, {{P_ACCL, 1, 0, 11, 0x0800}}, true, false},
{"MOVPZ", 0xfe00, 0xfe00, DSPInterpreter::movpz, NULL, 1 , 1, {{P_ACC, 1, 0, 8, 0x0100}}, true, false},
};

6
Source/Core/DSPCore/Src/DspIntArithmetic.cpp
View File

@ -41,14 +41,14 @@ void clr(const UDSPInstruction opc)
// CLRL $acR.l
// 1111 110r xxxx xxxx
// Clears $acR.l - low 16 bits of accumulator $acR.
// Clears (and rounds!) $acR.l - low 16 bits of accumulator $acR.
//
// flags out: --xx xx00
void clrl(const UDSPInstruction opc)
{
u8 reg = (opc >> 8) & 0x1;
s64 acc = (dsp_get_long_acc(reg) + 0x8000) & ~0xffff;
s64 acc = (dsp_get_long_acc(reg) + 0x7fff) & ~0xffff;
zeroWriteBackLog();
@ -853,7 +853,7 @@ void lsl(const UDSPInstruction opc)
// LSR $acR, #I
// 0001 010r 01ii iiii
// Logically shifts left accumulator $acR by number specified by value
// Logically shifts right accumulator $acR by number specified by value
// calculated by negating sign extended bits 0-6.
//
// flags out: --xx xx00

2
Source/Core/DSPCore/Src/DspIntMisc.cpp
View File

@ -43,7 +43,6 @@ void mrr(const UDSPInstruction opc)
// 0000 0000 100d dddd
// iiii iiii iiii iiii
// Load immediate value I to register $D.
// FIXME: Perform additional operation depending on destination register.
//
// DSPSpy discovery: This, and possibly other instructions that load a
// register, has a different behaviour in S40 mode if loaded to AC0.M: The
@ -60,7 +59,6 @@ void lri(const UDSPInstruction opc)
// LRIS $(0x18+D), #I
// 0000 1ddd iiii iiii
// Load immediate value I (8-bit sign extended) to accumulator register.
// FIXME: Perform additional operation depending on destination register.
void lris(const UDSPInstruction opc)
{
u8 reg = ((opc >> 8) & 0x7) + DSP_REG_AXL0;

53
Source/Core/DSPCore/Src/DspIntMultiplier.cpp
View File

@ -68,32 +68,14 @@ inline s64 dsp_multiply_mulx(u8 axh0, u8 axh1, u16 val1, u16 val2)
{
s64 result;
if ((axh0==0) && (axh1==0)) // axl.0 * axl.1
{
if ((axh0==0) && (axh1==0))
result = dsp_multiply(val1, val2, 1); // unsigned support ON if both ax?.l regs are used
}
else if ((axh0==0) && (axh1==1)) // axl.0 * axh.1
{
if ((val1 >= 0x8000) && (val2 >= 0x8000))
result = dsp_multiply(val1, val2, 2);
else if ((val1 >= 0x8000) && (val2 < 0x8000))
result = dsp_multiply(val1, val2, 1);
else
result = dsp_multiply(val1, val2, 0);
}
else if ((axh0==1) && (axh1==0)) // axh.0 * axl.1
{
if ((val2 >= 0x8000) && (val1 >= 0x8000))
result = dsp_multiply(val2, val1, 2);
else if ((val2 >= 0x8000) && (val1 < 0x8000))
result = dsp_multiply(val2, val1, 1);
else
result = dsp_multiply(val2, val1, 0);
}
else // axh.0 * axh.1
{
else if ((axh0==0) && (axh1==1))
result = dsp_multiply(val1, val2, 2); // mixed support ON (u64)axl.0 * (s64)(s16)axh.1
else if ((axh0==1) && (axh1==0))
result = dsp_multiply(val2, val1, 2); // mixed support ON (u64)axl.1 * (s64)(s16)axh.0
else
result = dsp_multiply(val1, val2, 0); // unsigned support OFF if both ax?.h regs are used
}
return result;
}
@ -103,19 +85,20 @@ inline s64 dsp_multiply_mulx(u8 axh0, u8 axh1, u16 val1, u16 val2)
// CLRP
// 1000 0100 xxxx xxxx
// Clears product register $prod.
// Magic numbers taken from duddie's doc
//
// 00ff_(fff0 + 0010)_0000 = 0100_0000_0000, conveniently, lower 40bits = 0
//
// It's not ok, to just zero all of them, correct values should be set because of
// direct use of prod regs by AX/AXWII (look @that part of ucode).
void clrp(const UDSPInstruction opc)
{
// Magic numbers taken from duddie's doc
// These are probably a bad idea to put here.
zeroWriteBackLog();
/*
g_dsp.r[DSP_REG_PRODL] = 0x0000;
g_dsp.r[DSP_REG_PRODM] = 0xfff0;
g_dsp.r[DSP_REG_PRODH] = 0x00ff;
g_dsp.r[DSP_REG_PRODM2] = 0x0010;
*/
// 00ff_(fff0 + 0010)_0000 = 0100_0000_0000, conveniently, lower 40bits = 0
dsp_set_long_prod(0); // if we are doing it wrong then let's be consistent
}
// TSTPROD
@ -170,7 +153,7 @@ void movnp(const UDSPInstruction opc)
// MOVPZ $acD
// 1111 111d xxxx xxxx
// Moves multiply product from $prod register to accumulator $acD
// register and sets $acD.l to 0
// register and sets (rounds) $acD.l to 0
//
// flags out: --xx xx0x
void movpz(const UDSPInstruction opc)
@ -188,7 +171,7 @@ void movpz(const UDSPInstruction opc)
// ADDPAXZ $acD, $axS
// 1111 10sd xxxx xxxx
// Adds secondary accumulator $axS to product register and stores result
// in accumulator register. Low 16-bits of $acD ($acD.l) are set to 0.
// in accumulator register. Low 16-bits of $acD ($acD.l) are set (round) to 0.
//
// flags out: --xx xx0x
void addpaxz(const UDSPInstruction opc)
@ -291,7 +274,7 @@ void mulmv(const UDSPInstruction opc)
// MULMVZ $axS.l, $axS.h, $acR
// 1001 s01r xxxx xxxx
// Move product register to accumulator register $acR and clear low part
// Move product register to accumulator register $acR and clear (round) 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).
@ -386,7 +369,7 @@ void mulxmv(const UDSPInstruction opc)
// MULXMV $ax0.S, $ax1.T, $acR
// 101s t01r xxxx xxxx
// Move product register to accumulator register $acR and clear low part
// Move product register to accumulator register $acR and clear (round) low part
// of accumulator register $acR.l. Multiply one part $ax0 by one part $ax1
// Part is selected by S and T bits. Zero selects low part,
// one selects high part.
@ -486,7 +469,7 @@ void mulcmv(const UDSPInstruction opc)
// (fixed possible bug in duddie's description, s->t)
// Multiply mid part of accumulator register $acS.m by high part $axT.h of
// secondary accumulator $axT (treat them both as signed). Move product
// register before multiplication to accumulator $acR, set low part of
// register before multiplication to accumulator $acR, set (round) low part of
// accumulator $acR.l to zero.
//
// flags out: --xx xx0x