OrdinaryMagician/vkdoom_m
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- extended the register limit for 'param'.

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The instruction one free instruction byte so it's now using that to extend its argument's register range to 65535.
For param this is needed because it passes strings by reference and creating an implicit temporary copy for string constants does not work here.
This commit is contained in:
Christoph Oelckers 2018-10-14 09:13:26 +02:00
commit dd719f0f14
6 changed files with 134 additions and 113 deletions
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50
src/scripting/backend/vmbuilder.cpp
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@ -593,39 +593,19 @@ size_t VMFunctionBuilder::Emit(int opcode, int opa, int opb, int opc)
}
if (opc > 255)
{
if (opcode == OP_PARAM && (opb & REGT_KONST) && opc <= 32767)
if (opRemap[opcode].kReg != 4 || opc > 32767)
{
int regtype = opb & REGT_TYPE;
opb = regtype;
ExpEmit emit(this, regtype);
Emit(opcodes[regtype], emit.RegNum, opc);
opc = emit.RegNum;
emit.Free(this);
}
else
{
if (opRemap[opcode].kReg != 4 || opc > 32767)
{
I_Error("Register limit exceeded");
}
int regtype = opRemap[opcode].kType;
ExpEmit emit(this, regtype);
Emit(opcodes[regtype], emit.RegNum, opc);
opcode = opRemap[opcode].altOp;
opc = emit.RegNum;
emit.Free(this);
I_Error("Register limit exceeded");
}
int regtype = opRemap[opcode].kType;
ExpEmit emit(this, regtype);
Emit(opcodes[regtype], emit.RegNum, opc);
opcode = opRemap[opcode].altOp;
opc = emit.RegNum;
emit.Free(this);
}
if (opcode == OP_PARAM)
{
int chg;
if (opb & REGT_MULTIREG2) chg = 2;
else if (opb&REGT_MULTIREG3) chg = 3;
else chg = 1;
ParamChange(chg);
}
else if (opcode == OP_CALL || opcode == OP_CALL_K || opcode == OP_TAIL || opcode == OP_TAIL_K)
if (opcode == OP_CALL || opcode == OP_CALL_K || opcode == OP_TAIL || opcode == OP_TAIL_K)
{
ParamChange(-opb);
}
@ -641,6 +621,16 @@ size_t VMFunctionBuilder::Emit(int opcode, int opa, VM_SHALF opbc)
{
assert(opcode >= 0 && opcode < NUM_OPS);
assert(opa >= 0 && opa <= 255);
if (opcode == OP_PARAM)
{
int chg;
if (opa & REGT_MULTIREG2) chg = 2;
else if (opa & REGT_MULTIREG3) chg = 3;
else chg = 1;
ParamChange(chg);
}
//assert(opbc >= -32768 && opbc <= 32767); always true due to parameter's width
VMOP op;
op.op = opcode;
@ -681,7 +671,7 @@ size_t VMFunctionBuilder::EmitParamInt(int value)
}
else
{
return Emit(OP_PARAM, 0, REGT_INT | REGT_KONST, GetConstantInt(value));
return Emit(OP_PARAM, REGT_INT | REGT_KONST, GetConstantInt(value));
}
}