public void EmitLoadAddress(Format12OpCode opCode, LowRegister targetRegister, int target, bool thumbAdjustment)
{
var offset = target - ((CurrentAddress + 4) & ~2);
if (offset >= 0)
{
Emit(opCode, targetRegister, target);
if (thumbAdjustment)
{
Emit(Format3OpCode.ADD, targetRegister, 1);
}
}
else
{
//While the Format12 instruction will clear the 1 bit of the PC, this code does not
var remainder = -(target - (CurrentAddress + 4));
if (thumbAdjustment)
{
--remainder;
}
Emit(Format5OpCode.MOV, targetRegister, Register.PC);
while (remainder != 0)
{
var amountToUse = Math.Min(remainder, 255);
Emit(Format3OpCode.SUB, targetRegister, (byte)remainder);
remainder -= amountToUse;
}
}
}
public void Emit(Format12OpCode opCode, LowRegister rd, int target)
{
var offset = target - ((CurrentAddress + 4) & ~2);
CheckRange(offset, 0, 1023, 3);
var fluentComment = opCode.ToHumanReadable().MyConcat(" ", rd, ",#0x", ((short)target).ToHex());
var offsetBits = (offset >> 2) & 0xff;
EmitHelper(rd, 12, fluentComment, 10, 4, (int)opCode, 1, rd.Index, 3, offsetBits, 8);
}
public void Emit(Format12OpCode opCode, LowRegister rd, int target)
{
var offset=target-((CurrentAddress+4)&~2);
CheckRange(offset, 0, 1023, 3);
var fluentComment=opCode.ToHumanReadable().MyConcat(" ", rd, ",#0x", ((short)target).ToHex());
var offsetBits=(offset>>2)&0xff;
EmitHelper(rd, 12, fluentComment, 10, 4, (int)opCode, 1, rd.Index, 3, offsetBits, 8);
}
public void EmitLoadAddress(Format12OpCode opCode, LowRegister targetRegister, int target, bool thumbAdjustment)
{
var offset=target-((CurrentAddress+4)&~2);
if(offset>=0) {
Emit(opCode, targetRegister, target);
if(thumbAdjustment) {
Emit(Format3OpCode.ADD, targetRegister, 1);
}
} else {
//While the Format12 instruction will clear the 1 bit of the PC, this code does not
var remainder=-(target-(CurrentAddress+4));
if(thumbAdjustment) {
--remainder;
}
Emit(Format5OpCode.MOV, targetRegister, Register.PC);
while(remainder!=0) {
var amountToUse=Math.Min(remainder, 255);
Emit(Format3OpCode.SUB, targetRegister, (byte)remainder);
remainder-=amountToUse;
}
}
}
public static string ToHumanReadable(this Format12OpCode opCode)
{
return("LDADDR_PCLDADDR_SP".Substring((int)opCode * 9, 9));
}
