piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-23 06:09:50 -06:00
Code Issues Packages Projects Releases Wiki Activity

Core/DSPCore: Reorganize register layout for accessing accumulators

Browse Source 
(acc and ax) and product register with one read/write.

Gives a minuscule speedup of not more than 4%. In exchange, breaks all
your out-of-tree changes to dsp. Tests are not building again, yet.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6680 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
pierre
2010-12-29 02:12:06 +00:00
parent 0059b0f44f
commit fc1db5eaa0
23 changed files with 1224 additions and 728 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
Source/Core/DSPCore/Src/DSPStacks.cpp
View File

@ -34,12 +34,12 @@ void dsp_reg_stack_push(int stack_reg)
{
g_dsp.reg_stack_ptr[stack_reg]++;
g_dsp.reg_stack_ptr[stack_reg] &= DSP_STACK_MASK;
g_dsp.reg_stack[stack_reg][g_dsp.reg_stack_ptr[stack_reg]] = g_dsp.r[DSP_REG_ST0 + stack_reg];
g_dsp.reg_stack[stack_reg][g_dsp.reg_stack_ptr[stack_reg]] = g_dsp._r.st[stack_reg];
}
void dsp_reg_stack_pop(int stack_reg)
{
g_dsp.r[DSP_REG_ST0 + stack_reg] = g_dsp.reg_stack[stack_reg][g_dsp.reg_stack_ptr[stack_reg]];
g_dsp._r.st[stack_reg] = g_dsp.reg_stack[stack_reg][g_dsp.reg_stack_ptr[stack_reg]];
g_dsp.reg_stack_ptr[stack_reg]--;
g_dsp.reg_stack_ptr[stack_reg] &= DSP_STACK_MASK;
}
@ -47,12 +47,12 @@ void dsp_reg_stack_pop(int stack_reg)
void dsp_reg_store_stack(int stack_reg, u16 val)
{
dsp_reg_stack_push(stack_reg);
g_dsp.r[DSP_REG_ST0 + stack_reg] = val;
g_dsp._r.st[stack_reg] = val;
}
u16 dsp_reg_load_stack(int stack_reg)
{
u16 val = g_dsp.r[DSP_REG_ST0 + stack_reg];
u16 val = g_dsp._r.st[stack_reg];
dsp_reg_stack_pop(stack_reg);
return val;
}