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DSP LLE: Remove byteswaps and other bloat from the hot path (do them at load/dma time). Minor speedup, perhaps.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2939 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard
2009-04-08 21:46:54 +00:00
parent e5edb4c4ad
commit 8c861ad58d
13 changed files with 65 additions and 77 deletions
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15
Source/Plugins/Plugin_DSP_LLE/Src/gdsp_interpreter.cpp
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@ -89,7 +89,7 @@ void gdsp_init()
// Just zero out DRAM.
for (int i = 0; i < DSP_DRAM_SIZE; i++)
{
g_dsp.dram[i] = 0x0021;
g_dsp.dram[i] = 0x2100;
}
// copied from a real console after the custom UCode has been loaded
@ -145,6 +145,11 @@ bool gdsp_load_irom(const char *fname)
return false;
}
fclose(pFile);
// Byteswap the rom.
for (int i = 0; i < DSP_IROM_SIZE; i++)
g_dsp.irom[i] = Common::swap16(g_dsp.irom[i]);
return true;
}
// Always keep IROM write protected.
@ -166,6 +171,9 @@ bool gdsp_load_coef(const char *fname)
return false;
}
fclose(pFile);
// Byteswap the rom.
for (int i = 0; i < DSP_IROM_SIZE; i++)
g_dsp.coef[i] = Common::swap16(g_dsp.coef[i]);
return true;
}
// Always keep COEF write protected. We unprotect only when DMA-ing
@ -213,9 +221,9 @@ void gdsp_step()
{
g_dsp.step_counter++;
#if PROFILE
g_dsp.err_pc = g_dsp.pc;
#if PROFILE
ProfilerAddDelta(g_dsp.err_pc, 1);
if (g_dsp.step_counter == 1)
{
@ -226,7 +234,6 @@ void gdsp_step()
{
ProfilerDump(g_dsp.step_counter);
}
#endif
u16 opc = dsp_fetch_code();
@ -334,8 +341,6 @@ void gdsp_run_cycles(int cycles)
// idle loop and if so we waste some time here. Might be beneficial to slice even further.
while (cycles > 0)
{
if (cr_halt)
return;
gdsp_step();
cycles--;
// We don't bother directly supporting pause - if the main emu pauses,