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DSP: Separate the two UpdateRegister functions more clearly. Add more comments about the condition codes.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2874 8ced0084-cf51-0410-be5f-012b33b47a6e
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hrydgard
2009-04-05 12:59:40 +00:00
parent 7368d712d6
commit 5d13f233e7
7 changed files with 270 additions and 275 deletions
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19
Source/Plugins/Plugin_DSP_LLE-testing/Src/gdsp_condition_codes.h
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@ -28,11 +28,22 @@
namespace DSPInterpreter {
bool CheckCondition(u8 _Condition);
s8 GetMultiplyModifier();
// SR flag defines.
#define SR_CMP_MASK 0x3f // Shouldn't this include 0x40?
void Update_SR_Register(s16 _Value);
void Update_SR_Register(s64 _Value);
// These are probably not accurate. Do not use yet.
#define SR_LOGIC_ZERO 0x0040 // ?? duddie's doc sometimes say & 1<<6 (0x40), sometimes 1<<14 (0x4000), while we have 0x20 .. eh
#define SR_PROD_MUL2 0x2000
#define SR_SIGN 0x0008
#define SR_ARITH_ZERO 0x0002 // ????????
#define SR_INT_ENABLE 0x0200 // Not 100% sure but duddie says so. This should replace the hack, if so.
#define SR_MUL_MODIFY 0x2000 // 1 = normal. 0 = x2
bool CheckCondition(u8 _Condition);
int GetMultiplyModifier();
void Update_SR_Register16(s16 _Value);
void Update_SR_Register64(s64 _Value);
} // namespace