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ryujinx-fork/ARMeilleure/Decoders/OpCodeT32BImm24.cs
gdkchan f468db7602
Implement Thumb (32-bit) memory (ordered), multiply, extension and bitfield instructions (#3687)
* Implement Thumb (32-bit) memory (ordered), multiply and bitfield instructions

* Remove public from interface

* Fix T32 BL immediate and implement signed and unsigned extend instructions
2022-09-10 22:51:00 -03:00

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1,017 B
C#

using ARMeilleure.Instructions;
namespace ARMeilleure.Decoders
{
class OpCodeT32BImm24 : OpCodeT32, IOpCode32BImm
{
public long Immediate { get; }
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeT32BImm24(inst, address, opCode);
public OpCodeT32BImm24(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
uint pc = GetPc();
if (inst.Name == InstName.Blx)
{
pc &= ~3u;
}
int imm11 = (opCode >> 0) & 0x7ff;
int j2 = (opCode >> 11) & 1;
int j1 = (opCode >> 13) & 1;
int imm10 = (opCode >> 16) & 0x3ff;
int s = (opCode >> 26) & 1;
int i1 = j1 ^ s ^ 1;
int i2 = j2 ^ s ^ 1;
int imm32 = imm11 | (imm10 << 11) | (i2 << 21) | (i1 << 22) | (s << 23);
imm32 = (imm32 << 8) >> 7;
Immediate = pc + imm32;
}
}
}