diff options
| author | Marko Pusljar <LM1234@gmail.com> | 2010-02-17 19:10:31 +0000 |
|---|---|---|
| committer | Marko Pusljar <LM1234@gmail.com> | 2010-02-17 19:10:31 +0000 |
| commit | 377ece32945273468a5b0d9c1ea5eb2d13aa1607 (patch) | |
| tree | 6286db8e59425cdfda6a6cf2c3dad07ccdcf2f97 /Source/Core/DSPCore/Src/DSPIntCCUtil.cpp | |
| parent | 634f6e512ee5a546c262a9bda4d3a0cb5a39f887 (diff) | |
DSPLLE - SR_10 flag implemented (no idea what name should it have or how/when this is supposed to be used)
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5075 8ced0084-cf51-0410-be5f-012b33b47a6e
Diffstat (limited to 'Source/Core/DSPCore/Src/DSPIntCCUtil.cpp')
| -rw-r--r-- | Source/Core/DSPCore/Src/DSPIntCCUtil.cpp | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/Source/Core/DSPCore/Src/DSPIntCCUtil.cpp b/Source/Core/DSPCore/Src/DSPIntCCUtil.cpp index 880e730a1f..ac687b15f9 100644 --- a/Source/Core/DSPCore/Src/DSPIntCCUtil.cpp +++ b/Source/Core/DSPCore/Src/DSPIntCCUtil.cpp @@ -26,32 +26,42 @@ namespace DSPInterpreter { -void Update_SR_Register64(s64 _Value, bool carry, bool overflow) +void Update_SR_Register64(s64 _Value, bool carry, bool overflow, bool sr10) { - // TODO: Should also set 0x10 and 0x01 (also 0x02?) + // TODO: recheck 0x1,0x2,even 0x80... implement... g_dsp.r[DSP_REG_SR] &= ~SR_CMP_MASK; - if (_Value < 0) + // 0x01 + if (carry) { - g_dsp.r[DSP_REG_SR] |= SR_SIGN; + g_dsp.r[DSP_REG_SR] |= SR_CARRY; + } + + // 0x02 + if (overflow) + { + g_dsp.r[DSP_REG_SR] |= SR_OVERFLOW; } + // 0x04 if (_Value == 0) { g_dsp.r[DSP_REG_SR] |= SR_ARITH_ZERO; } - if (carry) + // 0x08 + if (_Value < 0) { - g_dsp.r[DSP_REG_SR] |= SR_CARRY; + g_dsp.r[DSP_REG_SR] |= SR_SIGN; } - if (overflow) + // 0x10 - abs((u40)acc?) >= 0x80000000 + if (sr10) { - g_dsp.r[DSP_REG_SR] |= SR_OVERFLOW; + g_dsp.r[DSP_REG_SR] |= SR_10; } - - // Checks if top bits of m are equal, what is it good for? + + // 0x20 - Checks if top bits of m are equal, what is it good for? if (((_Value & 0xc0000000) == 0) || ((_Value & 0xc0000000) == 0xc0000000)) { g_dsp.r[DSP_REG_SR] |= SR_TOP2BITS; @@ -59,32 +69,42 @@ void Update_SR_Register64(s64 _Value, bool carry, bool overflow) } -void Update_SR_Register16(s16 _Value, bool carry, bool overflow) +void Update_SR_Register16(s16 _Value, bool carry, bool overflow, bool sr10) { + // TODO: recheck 0x1,0x2,even 0x80... implement... g_dsp.r[DSP_REG_SR] &= ~SR_CMP_MASK; - - if (_Value < 0) + // 0x01 + if (carry) { - g_dsp.r[DSP_REG_SR] |= SR_SIGN; + g_dsp.r[DSP_REG_SR] |= SR_CARRY; } + // 0x02 + if (overflow) + { + g_dsp.r[DSP_REG_SR] |= SR_OVERFLOW; + } + + // 0x04 if (_Value == 0) { g_dsp.r[DSP_REG_SR] |= SR_ARITH_ZERO; } - if (carry) + // 0x08 + if (_Value < 0) { - g_dsp.r[DSP_REG_SR] |= SR_CARRY; + g_dsp.r[DSP_REG_SR] |= SR_SIGN; } - if (overflow) + // 0x10 - abs((u40)acc?) >= 0x80000000 + if (sr10) { - g_dsp.r[DSP_REG_SR] |= SR_OVERFLOW; + g_dsp.r[DSP_REG_SR] |= SR_10; } - // Checks if top bits are equal, what is it good for? + // 0x20 - Checks if top bits of m are equal, what is it good for? if ((((u16)_Value >> 14) == 0) || (((u16)_Value >> 14) == 3)) { g_dsp.r[DSP_REG_SR] |= SR_TOP2BITS; |