mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-14 22:41:53 +00:00
361 lines
8.7 KiB
C++
361 lines
8.7 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(labels[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(labels[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(labels[i]);
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}
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void JitCompiler::EmitIJMP()
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{
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I_FatalError("EmitIJMP not implemented\n");
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}
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void JitCompiler::EmitVTBL()
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{
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auto notnull = cc.newLabel();
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cc.test(regA[B], regA[B]);
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cc.jnz(notnull);
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EmitThrowException(X_READ_NIL);
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cc.bind(notnull);
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auto result = cc.newInt32();
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typedef VMFunction*(*FuncPtr)(DObject*, int);
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auto call = cc.call(ToMemAddress(reinterpret_cast<const void*>(static_cast<FuncPtr>([](DObject *o, int c) -> VMFunction* {
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auto p = o->GetClass();
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assert(c < (int)p->Virtuals.Size());
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return p->Virtuals[c];
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}))), asmjit::FuncSignature2<void*, void*, int>());
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call->setRet(0, result);
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call->setArg(0, regA[A]);
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call->setArg(1, asmjit::Imm(C));
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}
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void JitCompiler::EmitSCOPE()
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{
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auto notnull = cc.newLabel();
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cc.test(regA[A], regA[A]);
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cc.jnz(notnull);
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EmitThrowException(X_READ_NIL);
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cc.bind(notnull);
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auto f = cc.newIntPtr();
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cc.mov(f, ToMemAddress(konsta[C].v));
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auto result = cc.newInt32();
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typedef int(*FuncPtr)(DObject*, VMFunction*, int);
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auto call = cc.call(ToMemAddress(reinterpret_cast<const void*>(static_cast<FuncPtr>([](DObject *o, VMFunction *f, int b) -> int {
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try
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{
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FScopeBarrier::ValidateCall(o->GetClass(), f, b - 1);
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return 1;
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}
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catch (const CVMAbortException &)
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{
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// To do: pass along the exception info
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return 0;
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}
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}))), asmjit::FuncSignature3<int, void*, void*, int>());
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call->setRet(0, result);
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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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auto notzero = cc.newLabel();
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cc.test(result, result);
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cc.jnz(notzero);
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EmitThrowException(X_OTHER);
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cc.bind(notzero);
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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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X86Gp vReg = cc.newInt32();
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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 = cc.newInt32();
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X86Gp location = cc.newIntPtr();
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Label L_endif = cc.newLabel();
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cc.mov(reg_retnum, retnum);
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cc.test(reg_retnum, numret);
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cc.jg(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 = cc.newInt64();
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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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break;
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case REGT_POINTER:
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#ifdef ASMJIT_ARCH_X64
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if (regtype & REGT_KONST)
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cc.mov(x86::qword_ptr(location), ToMemAddress(konsta[regnum].v));
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else
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cc.mov(x86::qword_ptr(location), regA[regnum]);
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#else
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if (regtype & REGT_KONST)
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cc.mov(x86::dword_ptr(location), ToMemAddress(konsta[regnum].v));
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else
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cc.mov(x86::dword_ptr(location), regA[regnum]);
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#endif
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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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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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cc.ret(numret);
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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 = cc.newInt32();
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X86Gp location = cc.newIntPtr();
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Label L_endif = cc.newLabel();
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cc.mov(reg_retnum, retnum);
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cc.test(reg_retnum, numret);
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cc.jg(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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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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cc.ret(numret);
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}
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void JitCompiler::EmitNEW()
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{
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auto result = cc.newIntPtr();
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typedef DObject*(*FuncPtr)(PClass*, int);
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auto call = cc.call(ToMemAddress(reinterpret_cast<const void*>(static_cast<FuncPtr>([](PClass *cls, int c) -> DObject* {
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try
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{
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if (!cls->ConstructNative)
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{
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ThrowAbortException(X_OTHER, "Class %s requires native construction", cls->TypeName.GetChars());
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}
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else if (cls->bAbstract)
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{
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ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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}
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else if (cls->IsDescendantOf(NAME_Actor)) // Creating actors here must be outright prohibited
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{
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ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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}
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// [ZZ] validate readonly and between scope construction
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if (c) FScopeBarrier::ValidateNew(cls, c - 1);
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return cls->CreateNew();
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}
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catch (const CVMAbortException &)
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{
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// To do: pass along the exception info
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return nullptr;
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}
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}))), asmjit::FuncSignature2<void*, void*, int>());
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call->setRet(0, result);
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call->setArg(0, regA[B]);
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call->setArg(1, asmjit::Imm(C));
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auto notnull = cc.newLabel();
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cc.test(result, result);
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cc.jnz(notnull);
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EmitThrowException(X_OTHER);
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cc.bind(notnull);
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cc.mov(regA[A], result);
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}
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void JitCompiler::EmitNEW_K()
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{
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PClass *cls = (PClass*)konsta[B].v;
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if (!cls->ConstructNative)
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{
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EmitThrowException(X_OTHER); // "Class %s requires native construction", cls->TypeName.GetChars()
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}
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else if (cls->bAbstract)
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{
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EmitThrowException(X_OTHER); // "Cannot instantiate abstract class %s", cls->TypeName.GetChars()
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}
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else if (cls->IsDescendantOf(NAME_Actor)) // Creating actors here must be outright prohibited
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{
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EmitThrowException(X_OTHER); // "Cannot create actors with 'new'"
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}
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else
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{
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auto result = cc.newIntPtr();
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auto regcls = cc.newIntPtr();
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cc.mov(regcls, ToMemAddress(konsta[B].v));
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typedef DObject*(*FuncPtr)(PClass*, int);
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auto call = cc.call(ToMemAddress(reinterpret_cast<const void*>(static_cast<FuncPtr>([](PClass *cls, int c) -> DObject* {
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try
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{
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if (c) FScopeBarrier::ValidateNew(cls, c - 1);
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return cls->CreateNew();
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}
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catch (const CVMAbortException &)
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{
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// To do: pass along the exception info
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return nullptr;
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}
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}))), asmjit::FuncSignature2<void*, void*, int>());
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call->setRet(0, result);
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call->setArg(0, regcls);
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call->setArg(1, asmjit::Imm(C));
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auto notnull = cc.newLabel();
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cc.test(result, result);
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cc.jnz(notnull);
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EmitThrowException(X_OTHER);
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cc.bind(notnull);
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cc.mov(regA[A], result);
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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 label1 = cc.newLabel();
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auto label2 = cc.newLabel();
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cc.cmp(regD[A], (int)BC);
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cc.jl(label1);
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EmitThrowException(X_ARRAY_OUT_OF_BOUNDS); // "Max.index = %u, current index = %u\n", BC, reg.d[A]
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cc.bind(label1);
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cc.cmp(regD[A], (int)0);
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cc.jge(label2);
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EmitThrowException(X_ARRAY_OUT_OF_BOUNDS); // "Negative current index = %i\n", reg.d[A]
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cc.bind(label2);
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}
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void JitCompiler::EmitBOUND_K()
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{
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auto label1 = cc.newLabel();
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auto label2 = cc.newLabel();
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cc.cmp(regD[A], (int)konstd[BC]);
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cc.jl(label1);
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EmitThrowException(X_ARRAY_OUT_OF_BOUNDS); // "Max.index = %u, current index = %u\n", konstd[BC], reg.d[A]
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cc.bind(label1);
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cc.cmp(regD[A], (int)0);
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cc.jge(label2);
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EmitThrowException(X_ARRAY_OUT_OF_BOUNDS); // "Negative current index = %i\n", reg.d[A]
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cc.bind(label2);
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}
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void JitCompiler::EmitBOUND_R()
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{
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auto label1 = cc.newLabel();
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auto label2 = cc.newLabel();
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cc.cmp(regD[A], regD[B]);
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cc.jl(label1);
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EmitThrowException(X_ARRAY_OUT_OF_BOUNDS); // "Max.index = %u, current index = %u\n", reg.d[B], reg.d[A]
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cc.bind(label1);
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cc.cmp(regD[A], (int)0);
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cc.jge(label2);
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EmitThrowException(X_ARRAY_OUT_OF_BOUNDS); // "Negative current index = %i\n", reg.d[A]
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cc.bind(label2);
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}
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