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- removed the SetupSimpleFrameMissingArgs logic as the number of args are now guaranteed

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This commit is contained in:
Magnus Norddahl 2018-11-17 00:49:22 +01:00
parent 8ec85cb0ee
commit f082a8af98
2 changed files with 5 additions and 83 deletions
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87
src/scripting/vm/jit.cpp
View file

@ -492,21 +492,7 @@ void JitCompiler::SetupFrame()
if (sfunc->SpecialInits.Size() == 0 && sfunc->NumRegS == 0)
{
// This is a simple frame with no constructors or destructors. Allocate it on the stack ourselves.
auto vmstack = cc.newStack(sfunc->StackSize, 16, "vmstack");
cc.lea(vmframe, vmstack);
auto slowinit = cc.newLabel();
auto endinit = cc.newLabel();
cc.cmp(numargs, sfunc->NumArgs);
cc.jne(slowinit);
SetupSimpleFrame();
cc.jmp(endinit);
cc.bind(slowinit);
SetupSimpleFrameMissingArgs(); // Does this ever happen?
cc.bind(endinit);
}
else
{
@ -518,6 +504,11 @@ void JitCompiler::SetupSimpleFrame()
{
using namespace asmjit;
// This is a simple frame with no constructors or destructors. Allocate it on the stack ourselves.
auto vmstack = cc.newStack(sfunc->StackSize, 16, "vmstack");
cc.lea(vmframe, vmstack);
int argsPos = 0;
int regd = 0, regf = 0, rega = 0;
for (unsigned int i = 0; i < sfunc->Proto->ArgumentTypes.Size(); i++)
@ -569,74 +560,6 @@ void JitCompiler::SetupSimpleFrame()
cc.xor_(regA[i], regA[i]);
}
void JitCompiler::SetupSimpleFrameMissingArgs()
{
using namespace asmjit;
auto sfuncptr = newTempIntPtr();
cc.mov(sfuncptr, imm_ptr(sfunc));
if (cc.is64Bit())
cc.mov(x86::qword_ptr(vmframe, offsetof(VMFrame, Func)), sfuncptr);
else
cc.mov(x86::dword_ptr(vmframe, offsetof(VMFrame, Func)), sfuncptr);
cc.mov(x86::byte_ptr(vmframe, offsetof(VMFrame, NumRegD)), sfunc->NumRegD);
cc.mov(x86::byte_ptr(vmframe, offsetof(VMFrame, NumRegF)), sfunc->NumRegF);
cc.mov(x86::byte_ptr(vmframe, offsetof(VMFrame, NumRegS)), sfunc->NumRegS);
cc.mov(x86::byte_ptr(vmframe, offsetof(VMFrame, NumRegA)), sfunc->NumRegA);
cc.mov(x86::word_ptr(vmframe, offsetof(VMFrame, MaxParam)), sfunc->MaxParam);
cc.mov(x86::word_ptr(vmframe, offsetof(VMFrame, NumParam)), 0);
// Zero initialize the variables (retardedly stupid to do here - should be done by the compiler backend!!)
unsigned int clearbegin = (unsigned int)offsetof(VMFrame, NumParam) + 2;
unsigned int clearend = sfunc->StackSize;
unsigned int sseend = clearbegin + (clearend - clearbegin) / 16 * 16;
if (clearbegin < sseend)
{
auto zerosse = newTempXmmPd();
cc.xorpd(zerosse, zerosse);
for (unsigned int i = clearbegin; i < sseend; i += 16)
cc.movupd(x86::ptr(vmframe, i), zerosse);
}
if (sseend < clearend)
{
auto zero32 = newTempInt32();
cc.xor_(zero32, zero32);
unsigned int dwordend = sseend + (clearend - sseend) / 4 * 4;
for (unsigned int i = sseend; i < dwordend; i += 4)
cc.mov(asmjit::x86::dword_ptr(vmframe, i), zero32);
for (unsigned int i = dwordend; i < clearend; i++)
cc.mov(asmjit::x86::byte_ptr(vmframe, i), zero32.r8Lo());
}
auto fillParams = CreateCall<void, VMFrame *, VMValue *, int>([](VMFrame *newf, VMValue *args, int numargs) {
try
{
VMFillParams(args, newf, numargs);
}
catch (...)
{
VMThrowException(std::current_exception());
}
});
fillParams->setArg(0, vmframe);
fillParams->setArg(1, args);
fillParams->setArg(2, numargs);
for (int i = 0; i < sfunc->NumRegD; i++)
cc.mov(regD[i], x86::dword_ptr(vmframe, offsetD + i * sizeof(int32_t)));
for (int i = 0; i < sfunc->NumRegF; i++)
cc.movsd(regF[i], x86::qword_ptr(vmframe, offsetF + i * sizeof(double)));
for (int i = 0; i < sfunc->NumRegS; i++)
cc.lea(regS[i], x86::ptr(vmframe, offsetS + i * sizeof(FString)));
for (int i = 0; i < sfunc->NumRegA; i++)
cc.mov(regA[i], x86::ptr(vmframe, offsetA + i * sizeof(void*)));
}
void JitCompiler::SetupFullVMFrame()
{
using namespace asmjit;

1
src/scripting/vm/jitintern.h
View file

@ -43,7 +43,6 @@ private:
void IncrementVMCalls();
void SetupFrame();
void SetupSimpleFrame();
void SetupSimpleFrameMissingArgs();
void SetupFullVMFrame();
void BindLabels();
void EmitOpcode();