thirdparty/ppsspp
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Don't save vregs for threads that don't use them.

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Unknown W. Brackets 2013-04-07 11:28:37 -07:00
parent c7020d4872
commit 5e14cab945
3 changed files with 19 additions and 15 deletions
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26
Core/HLE/sceKernelThread.cpp
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@ -1244,14 +1244,16 @@ u32 sceKernelGetThreadmanIdList(u32 type, u32 readBufPtr, u32 readBufSize, u32 i
}
// Saves the current CPU context
void __KernelSaveContext(ThreadContext *ctx)
void __KernelSaveContext(ThreadContext *ctx, bool vfpuEnabled)
{
memcpy(ctx->r, currentMIPS->r, sizeof(ctx->r));
memcpy(ctx->f, currentMIPS->f, sizeof(ctx->f));
// TODO: Make VFPU saving optional/delayed, only necessary between VFPU-attr-marked threads
memcpy(ctx->v, currentMIPS->v, sizeof(ctx->v));
memcpy(ctx->vfpuCtrl, currentMIPS->vfpuCtrl, sizeof(ctx->vfpuCtrl));
if (vfpuEnabled)
{
memcpy(ctx->v, currentMIPS->v, sizeof(ctx->v));
memcpy(ctx->vfpuCtrl, currentMIPS->vfpuCtrl, sizeof(ctx->vfpuCtrl));
}
ctx->pc = currentMIPS->pc;
ctx->hi = currentMIPS->hi;
@ -1262,14 +1264,16 @@ void __KernelSaveContext(ThreadContext *ctx)
}
// Loads a CPU context
void __KernelLoadContext(ThreadContext *ctx)
void __KernelLoadContext(ThreadContext *ctx, bool vfpuEnabled)
{
memcpy(currentMIPS->r, ctx->r, sizeof(ctx->r));
memcpy(currentMIPS->f, ctx->f, sizeof(ctx->f));
// TODO: Make VFPU saving optional/delayed, only necessary between VFPU-attr-marked threads
memcpy(currentMIPS->v, ctx->v, sizeof(ctx->v));
memcpy(currentMIPS->vfpuCtrl, ctx->vfpuCtrl, sizeof(ctx->vfpuCtrl));
if (vfpuEnabled)
{
memcpy(currentMIPS->v, ctx->v, sizeof(ctx->v));
memcpy(currentMIPS->vfpuCtrl, ctx->vfpuCtrl, sizeof(ctx->vfpuCtrl));
}
currentMIPS->pc = ctx->pc;
currentMIPS->hi = ctx->hi;
@ -1712,7 +1716,7 @@ void __KernelSetupRootThread(SceUID moduleID, int args, const char *argp, int pr
strcpy(thread->nt.name, "root");
__KernelLoadContext(&thread->context);
__KernelLoadContext(&thread->context, (attr & PSP_THREAD_ATTR_VFPU) != 0);
mipsr4k.r[MIPS_REG_A0] = args;
mipsr4k.r[MIPS_REG_SP] -= 256;
u32 location = mipsr4k.r[MIPS_REG_SP];
@ -2679,7 +2683,7 @@ void __KernelSwitchContext(Thread *target, const char *reason)
Thread *cur = __GetCurrentThread();
if (cur) // It might just have been deleted.
{
__KernelSaveContext(&cur->context);
__KernelSaveContext(&cur->context, (cur->nt.attr & PSP_THREAD_ATTR_VFPU) != 0);
oldPC = currentMIPS->pc;
oldUID = cur->GetUID();
@ -2705,7 +2709,7 @@ void __KernelSwitchContext(Thread *target, const char *reason)
hleCurrentThreadName = NULL;
}
__KernelLoadContext(&target->context);
__KernelLoadContext(&target->context, (target->nt.attr & PSP_THREAD_ATTR_VFPU) != 0);
bool fromIdle = oldUID == threadIdleID[0] || oldUID == threadIdleID[1];
bool toIdle = currentThread == threadIdleID[0] || currentThread == threadIdleID[1];