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DSPLLE: attempt to fix extended ops please review this patch carefully.

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thinks to note
- All ext commands should call zeroWriteBackLog() (before changing any 
reg)
- increase/decrease ar functions now only return a value not actually 
change anything


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4018 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
nakeee
2009-08-19 21:37:24 +00:00
parent 8155439dd1
commit b787f5f8f7
9 changed files with 340 additions and 266 deletions
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44
Source/Core/DSPCore/Src/DSPIntUtil.h
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@ -58,37 +58,57 @@ inline u16 ToMask(u16 a)
return a | (a >> 1);
}
inline void dsp_increment_addr_reg(int reg)
inline u16 dsp_increment_addr_reg(int reg, int value = -1)
{
u16 tmb = ToMask(g_dsp.r[DSP_REG_WR0 + reg]);
if ((g_dsp.r[reg] & tmb) == tmb)
g_dsp.r[reg] ^= g_dsp.r[DSP_REG_WR0 + reg];
u16 tmp;
if (value == -1)
tmp = g_dsp.r[reg];
else
g_dsp.r[reg]++;
tmp = value;
if ((tmp & tmb) == tmb)
tmp ^= g_dsp.r[DSP_REG_WR0 + reg];
else
tmp++;
return tmp;
}
// See http://code.google.com/p/dolphin-emu/source/detail?r=3125
inline void dsp_decrement_addr_reg(int reg)
inline u16 dsp_decrement_addr_reg(int reg, int value = -1)
{
// This one is easy. Looks like a hw implementation. Increment is worse...
if ((g_dsp.r[reg] & g_dsp.r[DSP_REG_WR0 + reg]) == 0)
g_dsp.r[reg] |= g_dsp.r[DSP_REG_WR0 + reg];
u16 tmp;
if (value == -1)
tmp = g_dsp.r[reg];
else
g_dsp.r[reg]--;
tmp = value;
// This one is easy. Looks like a hw implementation. Increment is worse...
if ((tmp & g_dsp.r[DSP_REG_WR0 + reg]) == 0)
tmp |= g_dsp.r[DSP_REG_WR0 + reg];
else
tmp--;
return tmp;
}
inline void dsp_increase_addr_reg(int reg, s16 value)
inline u16 dsp_increase_addr_reg(int reg, s16 value)
{
u16 tmp = - 1;
// TODO: DO RIGHT!
if (value > 0) {
for (int i = 0; i < value; i++) {
dsp_increment_addr_reg(reg);
tmp = dsp_increment_addr_reg(reg, tmp);
}
} else if (value < 0) {
for (int i = 0; i < (int)(-value); i++) {
dsp_decrement_addr_reg(reg);
tmp = dsp_decrement_addr_reg(reg, tmp);
}
}
return tmp;
}