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some docs small clean up fixed the loop size correctly I hope this time

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2893 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
nakeee
2009-04-06 09:42:29 +00:00
parent 956b06700d
commit 5f5b43c659
3 changed files with 137 additions and 50 deletions
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158
Source/Plugins/Plugin_DSP_LLE-testing/Src/DSPInterpreter.cpp
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@ -145,7 +145,8 @@ void loop(const UDSPInstruction& opc)
g_dsp.pc = loop_pc;
}
g_dsp.pc = loop_pc + opSize[dsp_peek_code()];
// g_dsp.pc = loop_pc;
g_dsp.pc =+ opSize[dsp_peek_code()];
}
void loopi(const UDSPInstruction& opc)
@ -159,7 +160,8 @@ void loopi(const UDSPInstruction& opc)
g_dsp.pc = loop_pc;
}
g_dsp.pc = loop_pc + opSize[dsp_peek_code()];
// g_dsp.pc = loop_pc;
g_dsp.pc =+ opSize[dsp_peek_code()];
}
void bloop(const UDSPInstruction& opc)
@ -176,7 +178,8 @@ void bloop(const UDSPInstruction& opc)
}
else
{
g_dsp.pc = loop_pc + opSize[dsp_peek_code()];
g_dsp.pc = loop_pc;
g_dsp.pc =+ opSize[dsp_peek_code()];
}
}
@ -193,7 +196,8 @@ void bloopi(const UDSPInstruction& opc)
}
else
{
g_dsp.pc = loop_pc + opSize[dsp_peek_code()];
g_dsp.pc = loop_pc;
g_dsp.pc =+ opSize[dsp_peek_code()];
}
}
@ -208,6 +212,10 @@ void mrr(const UDSPInstruction& opc)
dsp_op_write_reg(dreg, val);
}
// LRR $D, @$S
// 0001 1000 0ssd dddd
// Move value from data memory pointed by addressing register $S toregister $D.
// FIXME: Perform additional operation depending on destination register.
void lrr(const UDSPInstruction& opc)
{
u8 sreg = (opc.hex >> 5) & 0x3;
@ -215,27 +223,59 @@ void lrr(const UDSPInstruction& opc)
u16 val = dsp_dmem_read(g_dsp.r[sreg]);
dsp_op_write_reg(dreg, val);
// post processing of source reg
switch ((opc.hex >> 7) & 0x3)
{
case 0x0: // LRR
break;
case 0x1: // LRRD
g_dsp.r[sreg]--;
break;
case 0x2: // LRRI
g_dsp.r[sreg]++;
break;
case 0x3: // LRRN
g_dsp.r[sreg] += g_dsp.r[sreg + 4];
break;
}
}
// LRRD $D, @$S
// 0001 1000 1ssd dddd
// Move value from data memory pointed by addressing register $S toregister $D.
// Decrement register $S.
// FIXME: Perform additional operation depending on destination register.
void lrrd(const UDSPInstruction& opc)
{
u8 sreg = (opc.hex >> 5) & 0x3;
u8 dreg = opc.hex & 0x1f;
u16 val = dsp_dmem_read(g_dsp.r[sreg]);
dsp_op_write_reg(dreg, val);
g_dsp.r[sreg]--;
}
// LRRI $D, @$S
// 0001 1001 0ssd dddd
// Move value from data memory pointed by addressing register $S to register $D.
// Increment register $S.
// FIXME: Perform additional operation depending on destination register.
void lrri(const UDSPInstruction& opc)
{
u8 sreg = (opc.hex >> 5) & 0x3;
u8 dreg = opc.hex & 0x1f;
u16 val = dsp_dmem_read(g_dsp.r[sreg]);
dsp_op_write_reg(dreg, val);
g_dsp.r[sreg]++;
}
// LRRN $D, @$S
// 0001 1001 1ssd dddd
// Move value from data memory pointed by addressing register $S to register $D.
// Add indexing register $(0x4+S) to register $S.
// FIXME: Perform additional operation depending on destination register.
void lrrn(const UDSPInstruction& opc)
{
u8 sreg = (opc.hex >> 5) & 0x3;
u8 dreg = opc.hex & 0x1f;
u16 val = dsp_dmem_read(g_dsp.r[sreg]);
dsp_op_write_reg(dreg, val);
g_dsp.r[sreg] += g_dsp.r[sreg + 4];
}
// SRR @$D, $S
// 0001 1010 0dds ssss
// Store value from source register $S to a memory location pointed by
// addressing register $D.
// FIXME: Perform additional operation depending on source register.
void srr(const UDSPInstruction& opc)
{
u8 dreg = (opc.hex >> 5) & 0x3;
@ -243,25 +283,51 @@ void srr(const UDSPInstruction& opc)
u16 val = dsp_op_read_reg(sreg);
dsp_dmem_write(g_dsp.r[dreg], val);
}
// SRRD @$D, $S
// 0001 1010 1dds ssss
// Store value from source register $S to a memory location pointed by
// addressing register $D. Decrement register $D.
// FIXME: Perform additional operation depending on source register.
void srrd(const UDSPInstruction& opc)
{
u8 dreg = (opc.hex >> 5) & 0x3;
u8 sreg = opc.hex & 0x1f;
// post processing of dest reg
switch ((opc.hex >> 7) & 0x3)
{
case 0x0: // SRR
break;
u16 val = dsp_op_read_reg(sreg);
dsp_dmem_write(g_dsp.r[dreg], val);
g_dsp.r[dreg]--;
}
case 0x1: // SRRD
g_dsp.r[dreg]--;
break;
// SRRI @$D, $S
// 0001 1011 0dds ssss
// Store value from source register $S to a memory location pointed by
// addressing register $D. Increment register $D.
// FIXME: Perform additional operation depending on source register.
void srri(const UDSPInstruction& opc)
{
u8 dreg = (opc.hex >> 5) & 0x3;
u8 sreg = opc.hex & 0x1f;
case 0x2: // SRRI
g_dsp.r[dreg]++;
break;
u16 val = dsp_op_read_reg(sreg);
dsp_dmem_write(g_dsp.r[dreg], val);
g_dsp.r[dreg]++;
}
case 0x3: // SRRX
g_dsp.r[dreg] += g_dsp.r[dreg + 4];
break;
}
// SRRN @$D, $S
// 0001 1011 1dds ssss
// Store value from source register $S to a memory location pointed by
// addressing register $D. Add indexing register $(0x4+D) to register $D.
// FIXME: Perform additional operation depending on source register.
void srrn(const UDSPInstruction& opc)
{
u8 dreg = (opc.hex >> 5) & 0x3;
u8 sreg = opc.hex & 0x1f;
u16 val = dsp_op_read_reg(sreg);
dsp_dmem_write(g_dsp.r[dreg], val);
g_dsp.r[dreg] += g_dsp.r[dreg + 4];
}
// FIXME inside
@ -1354,13 +1420,25 @@ void msubc(const UDSPInstruction& opc)
dsp_set_long_prod(prod);
}
// SRS @M, $(0x18+S)
// 0010 1sss mmmm mmmm
// Store value from register $(0x18+S) to a memory pointed by address M.
// (8-bit sign extended).
// FIXME: Perform additional operation depending on destination register.
// Note: pc+=2 in doddie's doc seems wrong
void srs(const UDSPInstruction& opc)
{
u8 reg = ((opc.hex >> 8) & 0x7) + 0x18;
u16 addr = (s8)opc.hex;
dsp_dmem_write(addr, g_dsp.r[reg]);
dsp_dmem_write(addr, g_dsp.r[reg]);
}
// LRS $(0x18+D), @M
// 0010 0ddd mmmm mmmm
// Move value from data memory pointed by address M (8-bit sign
// extended) to register $(0x18+D).
// FIXME: Perform additional operation depending on destination register.
// Note: pc+=2 in doddie's doc seems wrong
void lrs(const UDSPInstruction& opc)
{
u8 reg = ((opc.hex >> 8) & 0x7) + 0x18;