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- add first draft of abort exceptions

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This commit is contained in:
Jonathan Russell 2018-08-18 18:03:18 +01:00 committed by drfrag
parent c65b7076eb
commit 197b20af5d
3 changed files with 72 additions and 2 deletions
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59
src/scripting/vm/jit.cpp
View file

@ -292,6 +292,57 @@ static int64_t ToMemAddress(const void *d)
return (int64_t)(ptrdiff_t)d;
}
void setPCOnAbort(VMScriptFunction *sfunc, VMOP* pc) {
sfunc->pcOnJitAbort = pc;
}
template <typename T>
void setCallArg(T call, int num, int64_t arg) {
call->setArg(num, asmjit::imm(arg));
}
void setCallArg(asmjit::CCFuncCall* call, int num, uint64_t arg) {
call->setArg(num, asmjit::imm_u(arg));
}
void setCallArg(asmjit::CCFuncCall* call, int num, const asmjit::Reg& arg) {
call->setArg(num, arg);
}
template <typename Arg>
void setCallArg(asmjit::CCFuncCall* call, int num, Arg* arg) {
call->setArg(num, asmjit::imm_ptr(arg));
}
template <typename Arg>
void emitCallVariadicArgs(asmjit::CCFuncCall* call, int num, Arg arg) {
setCallArg(call, num, arg);
}
template <typename Arg, typename... Args>
void emitCallVariadicArgs(asmjit::CCFuncCall* call, int num, Arg arg, Args... args) {
setCallArg(call, num, arg);
emitCallVariadicArgs(call, num + 1, args...);
}
void emitCallVariadicArgs(asmjit::CCFuncCall*, int num) {}
template <typename... ArgTypes, typename... Args>
void emitAbortExceptionCall(asmjit::X86Compiler& cc, VMScriptFunction* sfunc, const VMOP* pc, EVMAbortException reason, const char* moreinfo, Args... args) {
using namespace asmjit;
auto ptr = cc.newIntPtr();
CCFuncCall* setPCCall = cc.call(imm_ptr((void*)setPCOnAbort), FuncSignature2<void, VMScriptFunction*, VMOP*>(CallConv::kIdHost));
setPCCall->setArg(0, imm_ptr(sfunc));
setPCCall->setArg(1, imm_ptr(pc));
CCFuncCall* throwAbortCall = cc.call(imm_ptr((void*)ThrowAbortException), FuncSignatureT<void, int, const char*, ArgTypes...>(CallConv::kIdHost));
throwAbortCall->setArg(0, imm(reason));
throwAbortCall->setArg(1, imm_ptr(moreinfo));
emitCallVariadicArgs(throwAbortCall, 2, args...);
}
static void CallSqrt(asmjit::X86Compiler& cc, const asmjit::X86Xmm &a, const asmjit::X86Xmm &b)
{
using namespace asmjit;
@ -902,10 +953,18 @@ JitFuncPtr JitCompile(VMScriptFunction *sfunc)
{
auto tmp0 = cc.newInt32();
auto tmp1 = cc.newInt32();
auto label = cc.newLabel();
cc.test(regD[C], regD[C]);
cc.je(label);
cc.mov(tmp0, regD[B]);
cc.cdq(tmp1, tmp0);
cc.idiv(tmp1, tmp0, regD[C]);
cc.mov(regD[A], tmp0);
cc.bind(label);
emitAbortExceptionCall(cc, sfunc, pc, X_DIVISION_BY_ZERO, nullptr);
break;
}
case OP_DIV_RK:

14
src/scripting/vm/vmexec.h
View file

@ -80,8 +80,18 @@ static int Exec(VMFrameStack *stack, const VMOP *pc, VMReturn *ret, int numret)
sfunc->JitFunc = JitCompile(sfunc);
sfunc->JitCompiled = true;
}
if (sfunc->JitFunc)
return sfunc->JitFunc(stack, &reg, ret, numret);
if (sfunc->JitFunc) {
try {
return sfunc->JitFunc(stack, &reg, ret, numret);
}
catch (CVMAbortException &err)
{
err.MaybePrintMessage();
err.stacktrace.AppendFormat("Called from %s at %s, line %d\n", sfunc->PrintableName.GetChars(), sfunc->SourceFileName.GetChars(), sfunc->PCToLine(sfunc->pcOnJitAbort));
// PrintParameters(reg.param + f->NumParam - B, B);
throw;
}
}
}
void *ptr;

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

@ -475,6 +475,7 @@ public:
bool JitCompiled = false;
JitFuncPtr JitFunc = nullptr;
VMOP* pcOnJitAbort = nullptr;
void InitExtra(void *addr);
void DestroyExtra(void *addr);