mirror of
https://github.com/ZDoom/Raze.git
synced 2024-12-15 15:11:41 +00:00
319 lines
6.7 KiB
C++
319 lines
6.7 KiB
C++
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#include "jitintern.h"
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void JitCompiler::EmitTEST()
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{
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int i = (int)(ptrdiff_t)(pc - sfunc->Code);
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cc.cmp(regD[A], BC);
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cc.jne(GetLabel(i + 2));
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}
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void JitCompiler::EmitTESTN()
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{
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int bc = BC;
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int i = (int)(ptrdiff_t)(pc - sfunc->Code);
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cc.cmp(regD[A], -bc);
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cc.jne(GetLabel(i + 2));
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}
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void JitCompiler::EmitJMP()
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{
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auto dest = pc + JMPOFS(pc) + 1;
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int i = (int)(ptrdiff_t)(dest - sfunc->Code);
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cc.jmp(GetLabel(i));
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}
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void JitCompiler::EmitIJMP()
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{
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int base = (int)(ptrdiff_t)(pc - sfunc->Code) + 1;
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auto val = newTempInt32();
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cc.mov(val, regD[A]);
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for (int i = 0; i < (int)BCs; i++)
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{
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if (sfunc->Code[base +i].op == OP_JMP)
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{
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int target = base + i + JMPOFS(&sfunc->Code[base + i]) + 1;
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cc.cmp(val, i);
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cc.je(GetLabel(target));
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}
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}
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pc += BCs;
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// This should never happen. It means we are jumping to something that is not a JMP instruction!
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EmitThrowException(X_OTHER);
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}
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static void ValidateCall(DObject *o, VMFunction *f, int b)
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{
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FScopeBarrier::ValidateCall(o->GetClass(), f, b - 1);
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}
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void JitCompiler::EmitSCOPE()
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{
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auto label = EmitThrowExceptionLabel(X_READ_NIL);
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cc.test(regA[A], regA[A]);
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cc.jz(label);
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auto f = newTempIntPtr();
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cc.mov(f, asmjit::imm_ptr(konsta[C].v));
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typedef int(*FuncPtr)(DObject*, VMFunction*, int);
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auto call = CreateCall<void, DObject*, VMFunction*, int>(ValidateCall);
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call->setArg(0, regA[A]);
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call->setArg(1, f);
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call->setArg(2, asmjit::Imm(B));
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}
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static void SetString(VMReturn* ret, FString* str)
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{
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ret->SetString(*str);
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}
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void JitCompiler::EmitRET()
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{
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using namespace asmjit;
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if (B == REGT_NIL)
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{
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EmitPopFrame();
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X86Gp vReg = newTempInt32();
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cc.mov(vReg, 0);
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cc.ret(vReg);
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}
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else
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{
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int a = A;
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int retnum = a & ~RET_FINAL;
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X86Gp reg_retnum = newTempInt32();
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X86Gp location = newTempIntPtr();
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Label L_endif = cc.newLabel();
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cc.mov(reg_retnum, retnum);
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cc.cmp(reg_retnum, numret);
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cc.jge(L_endif);
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cc.mov(location, x86::ptr(ret, retnum * sizeof(VMReturn)));
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int regtype = B;
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int regnum = C;
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switch (regtype & REGT_TYPE)
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{
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case REGT_INT:
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if (regtype & REGT_KONST)
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cc.mov(x86::dword_ptr(location), konstd[regnum]);
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else
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cc.mov(x86::dword_ptr(location), regD[regnum]);
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break;
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case REGT_FLOAT:
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if (regtype & REGT_KONST)
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{
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auto tmp = newTempInt64();
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if (regtype & REGT_MULTIREG3)
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{
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cc.mov(tmp, (((int64_t *)konstf)[regnum]));
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cc.mov(x86::qword_ptr(location), tmp);
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cc.mov(tmp, (((int64_t *)konstf)[regnum + 1]));
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cc.mov(x86::qword_ptr(location, 8), tmp);
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cc.mov(tmp, (((int64_t *)konstf)[regnum + 2]));
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cc.mov(x86::qword_ptr(location, 16), tmp);
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}
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else if (regtype & REGT_MULTIREG2)
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{
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cc.mov(tmp, (((int64_t *)konstf)[regnum]));
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cc.mov(x86::qword_ptr(location), tmp);
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cc.mov(tmp, (((int64_t *)konstf)[regnum + 1]));
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cc.mov(x86::qword_ptr(location, 8), tmp);
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}
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else
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{
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cc.mov(tmp, (((int64_t *)konstf)[regnum]));
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cc.mov(x86::qword_ptr(location), tmp);
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}
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}
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else
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{
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if (regtype & REGT_MULTIREG3)
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{
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cc.movsd(x86::qword_ptr(location), regF[regnum]);
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cc.movsd(x86::qword_ptr(location, 8), regF[regnum + 1]);
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cc.movsd(x86::qword_ptr(location, 16), regF[regnum + 2]);
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}
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else if (regtype & REGT_MULTIREG2)
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{
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cc.movsd(x86::qword_ptr(location), regF[regnum]);
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cc.movsd(x86::qword_ptr(location, 8), regF[regnum + 1]);
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}
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else
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{
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cc.movsd(x86::qword_ptr(location), regF[regnum]);
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}
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}
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break;
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case REGT_STRING:
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{
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auto ptr = newTempIntPtr();
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cc.mov(ptr, ret);
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cc.add(ptr, (int)(retnum * sizeof(VMReturn)));
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auto call = CreateCall<void, VMReturn*, FString*>(SetString);
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call->setArg(0, ptr);
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if (regtype & REGT_KONST) call->setArg(1, asmjit::imm_ptr(&konsts[regnum]));
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else call->setArg(1, regS[regnum]);
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break;
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}
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case REGT_POINTER:
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if (cc.is64Bit())
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{
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if (regtype & REGT_KONST)
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{
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auto ptr = newTempIntPtr();
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cc.mov(ptr, asmjit::imm_ptr(konsta[regnum].v));
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cc.mov(x86::qword_ptr(location), ptr);
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}
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else
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{
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cc.mov(x86::qword_ptr(location), regA[regnum]);
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}
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}
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else
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{
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if (regtype & REGT_KONST)
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{
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auto ptr = newTempIntPtr();
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cc.mov(ptr, asmjit::imm_ptr(konsta[regnum].v));
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cc.mov(x86::dword_ptr(location), ptr);
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}
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else
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{
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cc.mov(x86::dword_ptr(location), regA[regnum]);
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}
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}
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break;
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}
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if (a & RET_FINAL)
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{
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cc.add(reg_retnum, 1);
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EmitPopFrame();
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cc.ret(reg_retnum);
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}
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cc.bind(L_endif);
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if (a & RET_FINAL)
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{
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EmitPopFrame();
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cc.ret(numret);
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}
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}
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}
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void JitCompiler::EmitRETI()
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{
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using namespace asmjit;
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int a = A;
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int retnum = a & ~RET_FINAL;
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X86Gp reg_retnum = newTempInt32();
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X86Gp location = newTempIntPtr();
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Label L_endif = cc.newLabel();
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cc.mov(reg_retnum, retnum);
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cc.cmp(reg_retnum, numret);
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cc.jge(L_endif);
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cc.mov(location, x86::ptr(ret, retnum * sizeof(VMReturn)));
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cc.mov(x86::dword_ptr(location), BCs);
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if (a & RET_FINAL)
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{
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cc.add(reg_retnum, 1);
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EmitPopFrame();
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cc.ret(reg_retnum);
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}
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cc.bind(L_endif);
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if (a & RET_FINAL)
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{
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EmitPopFrame();
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cc.ret(numret);
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}
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}
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void JitCompiler::EmitTHROW()
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{
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EmitThrowException(EVMAbortException(BC));
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}
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void JitCompiler::EmitBOUND()
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{
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auto cursor = cc.getCursor();
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auto label = cc.newLabel();
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cc.bind(label);
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auto call = CreateCall<void, int, int>(&JitCompiler::ThrowArrayOutOfBounds);
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call->setArg(0, regD[A]);
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call->setArg(1, asmjit::imm(BC));
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cc.setCursor(cursor);
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cc.cmp(regD[A], (int)BC);
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cc.jae(label);
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JitLineInfo info;
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info.Label = label;
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info.LineNumber = sfunc->PCToLine(pc);
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LineInfo.Push(info);
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}
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void JitCompiler::EmitBOUND_K()
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{
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auto cursor = cc.getCursor();
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auto label = cc.newLabel();
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cc.bind(label);
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auto call = CreateCall<void, int, int>(&JitCompiler::ThrowArrayOutOfBounds);
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call->setArg(0, regD[A]);
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call->setArg(1, asmjit::imm(konstd[BC]));
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cc.setCursor(cursor);
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cc.cmp(regD[A], (int)konstd[BC]);
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cc.jae(label);
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JitLineInfo info;
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info.Label = label;
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info.LineNumber = sfunc->PCToLine(pc);
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LineInfo.Push(info);
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}
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void JitCompiler::EmitBOUND_R()
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{
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auto cursor = cc.getCursor();
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auto label = cc.newLabel();
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cc.bind(label);
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auto call = CreateCall<void, int, int>(&JitCompiler::ThrowArrayOutOfBounds);
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call->setArg(0, regD[A]);
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call->setArg(1, regD[B]);
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cc.setCursor(cursor);
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cc.cmp(regD[A], regD[B]);
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cc.jae(label);
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JitLineInfo info;
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info.Label = label;
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info.LineNumber = sfunc->PCToLine(pc);
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LineInfo.Push(info);
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}
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void JitCompiler::ThrowArrayOutOfBounds(int index, int size)
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{
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if (index >= size)
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{
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ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Size = %u, current index = %u\n", size, index);
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}
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else
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{
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ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Negative current index = %i\n", index);
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}
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}
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