diff options
Diffstat (limited to 'ChocolArm64/Instructions32/A32InstInterpretHelper.cs')
| -rw-r--r-- | ChocolArm64/Instructions32/A32InstInterpretHelper.cs | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/ChocolArm64/Instructions32/A32InstInterpretHelper.cs b/ChocolArm64/Instructions32/A32InstInterpretHelper.cs deleted file mode 100644 index b08e1298..00000000 --- a/ChocolArm64/Instructions32/A32InstInterpretHelper.cs +++ /dev/null @@ -1,65 +0,0 @@ -using ChocolArm64.Decoders; -using ChocolArm64.State; -using System; - -namespace ChocolArm64.Instructions32 -{ - static class A32InstInterpretHelper - { - public static bool IsConditionTrue(CpuThreadState state, Cond cond) - { - switch (cond) - { - case Cond.Eq: return state.Zero; - case Cond.Ne: return !state.Zero; - case Cond.GeUn: return state.Carry; - case Cond.LtUn: return !state.Carry; - case Cond.Mi: return state.Negative; - case Cond.Pl: return !state.Negative; - case Cond.Vs: return state.Overflow; - case Cond.Vc: return !state.Overflow; - case Cond.GtUn: return state.Carry && !state.Zero; - case Cond.LeUn: return !state.Carry && state.Zero; - case Cond.Ge: return state.Negative == state.Overflow; - case Cond.Lt: return state.Negative != state.Overflow; - case Cond.Gt: return state.Negative == state.Overflow && !state.Zero; - case Cond.Le: return state.Negative != state.Overflow && state.Zero; - } - - return true; - } - - public unsafe static uint GetReg(CpuThreadState state, int reg) - { - if ((uint)reg > 15) - { - throw new ArgumentOutOfRangeException(nameof(reg)); - } - - fixed (uint* ptr = &state.R0) - { - return *(ptr + reg); - } - } - - public unsafe static void SetReg(CpuThreadState state, int reg, uint value) - { - if ((uint)reg > 15) - { - throw new ArgumentOutOfRangeException(nameof(reg)); - } - - fixed (uint* ptr = &state.R0) - { - *(ptr + reg) = value; - } - } - - public static uint GetPc(CpuThreadState state) - { - //Due to the old fetch-decode-execute pipeline of old ARM CPUs, - //the PC is 4 or 8 bytes (2 instructions) ahead of the current instruction. - return state.R15 + (state.Thumb ? 2U : 4U); - } - } -}
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