mirror of
https://github.com/thug1src/thug.git
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96 lines
1.8 KiB
C++
96 lines
1.8 KiB
C++
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#include <core/defines.h>
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#include <stdio.h>
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#include "dma.h"
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#include "vif.h"
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#include "vu1.h"
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namespace NxPs2
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{
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uint8 *vif::NextCode(uint8 *pVifcode)
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{
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if ((pVifcode[3] & 0x60) != 0x60)
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{
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switch (pVifcode[3] & 0x7F)
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{
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case 0x00: // NOP
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case 0x02: // OFFSET
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case 0x03: // BASE
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case 0x04: // ITOP
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case 0x05: // STMOD
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case 0x06: // MSKPATH3
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case 0x07: // MARK
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case 0x10: // FLUSHE
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case 0x11: // FLUSH
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case 0x13: // FLUSHA
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case 0x14: // MSCAL
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case 0x15: // MSCALF
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case 0x17: // MSCNT
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return pVifcode + 4;
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case 0x01: // STCYCL
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vif::CL = pVifcode[0];
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vif::WL = pVifcode[1];
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return pVifcode + 4;
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case 0x20: // STMASK
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return pVifcode + 8;
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case 0x30: // STROW
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case 0x31: // STCOL
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return pVifcode + 20;
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case 0x4A: // MPG
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return pVifcode + (pVifcode[2] << 3) + 4;
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case 0x50: // DIRECT
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case 0x51: // DIRECTHL
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return pVifcode + (((uint16 *)pVifcode)[0] << 4) + 4;
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default: // undefined vifcode
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return pVifcode;
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}
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}
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else // UNPACK
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{
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uint vn = (pVifcode[3] >> 2) & 3;
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uint vl = pVifcode[3] & 3;
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uint num = pVifcode[2];
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uint dimension = vn+1;
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uint bitlength = 32>>vl;
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if (vif::WL <= vif::CL)
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{
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return pVifcode + 4 + (((bitlength * dimension * num + 31) >> 5) << 2);
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}
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else
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{
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uint rem = num % vif::WL;
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uint n = vif::CL * (num/vif::WL) + (rem > vif::CL ? vif::CL : rem);
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return pVifcode + 4 + (((bitlength * dimension * n + 31) >> 5) << 2);
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}
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}
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}
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//--------------------------------
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// S T A T I C D A T A
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//--------------------------------
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uint vif::UnpackSize;
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uint vif::CycleLength;
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uint vif::BitLength;
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uint vif::Dimension;
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uint8 *vif::pVifCode;
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uint vif::WL;
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uint vif::CL;
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} // namespace NxPs2
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