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store frame locals on stack and avoid need to copy parameters

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This commit is contained in:
Joel Dice 2007-07-02 07:11:51 -06:00
parent d3735e9e58
commit 8acb32e4cb
2 changed files with 13 additions and 19 deletions
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3
src/types.def
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@ -70,8 +70,7 @@
(object method) (object method)
(object next) (object next)
(uint32_t ip) (uint32_t ip)
(uint32_t stackBase) (uint32_t stackBase))
(array object locals))
(type reference (type reference
(object class) (object class)

29
src/vm.cpp
View File

@ -2471,6 +2471,12 @@ invokeNative(Thread* t, object method)
} }
} }
object
frameLocals(Thread* t, object frame, unsigned index)
{
return t->stack[frameStackBase(t, frame) + index];
}
namespace builtin { namespace builtin {
void void
@ -4086,7 +4092,7 @@ run(Thread* t)
unsigned base = sp - parameterCount; unsigned base = sp - parameterCount;
if (methodFlags(t, code) & ACC_NATIVE) { if (methodFlags(t, code) & ACC_NATIVE) {
frame = makeFrame(t, code, frame, 0, base, 0, false); frame = makeFrame(t, code, frame, 0, base);
object r = invokeNative(t, code); object r = invokeNative(t, code);
@ -4103,7 +4109,8 @@ run(Thread* t)
code = methodCode(t, frameMethod(t, frame)); code = methodCode(t, frameMethod(t, frame));
} else { } else {
if (UNLIKELY(codeMaxStack(t, methodCode(t, code)) + base if (UNLIKELY(codeMaxStack(t, methodCode(t, code))
+ codeMaxLocals(t, methodCode(t, code)) + base
> Thread::StackSizeInWords)) > Thread::StackSizeInWords))
{ {
exception = makeStackOverflowError(t); exception = makeStackOverflowError(t);
@ -4113,21 +4120,10 @@ run(Thread* t)
frameIp(t, frame) = ip; frameIp(t, frame) = ip;
ip = 0; ip = 0;
frame = makeFrame(t, code, frame, 0, base, frame = makeFrame(t, code, frame, 0, base);
codeMaxLocals(t, methodCode(t, code)), false);
code = methodCode(t, code); code = methodCode(t, code);
if (parameterCount) { sp = base + codeMaxLocals(t, methodCode(t, code));
memcpy(&frameLocals(t, frame, 0), stack + base,
parameterCount * BytesPerWord);
}
if (frameLength(t, frame) - parameterCount) {
memset(&frameLocals(t, frame, 0) + parameterCount, 0,
(frameLength(t, frame) - parameterCount) * BytesPerWord);
}
sp = base;
} }
} goto loop; } goto loop;
@ -4224,8 +4220,7 @@ run(Thread* t, const char* className, int argc, const char** argv)
object method = findMethodInClass(t, class_, reference); object method = findMethodInClass(t, class_, reference);
if (LIKELY(t->exception == 0)) { if (LIKELY(t->exception == 0)) {
t->code = methodCode(t, method); t->code = methodCode(t, method);
t->frame = makeFrame t->frame = makeFrame(t, method, 0, 0, 0);
(t, method, 0, 0, 0, codeMaxLocals(t, t->code), true);
object args = makeObjectArray object args = makeObjectArray
(t, arrayBody(t, t->vm->types, Machine::StringType), argc, true); (t, arrayBody(t, t->vm->types, Machine::StringType), argc, true);