From 98e05ee4b7aa8a08088b1f0cd6c581bb50f11395 Mon Sep 17 00:00:00 2001
From: merry <git@mary.rs>
Date: Thu, 17 Feb 2022 22:39:45 +0000
Subject: ARMeilleure: Thumb support (All T16 instructions) (#3105)
* Decoders: Add InITBlock argument
* OpCodeTable: Minor cleanup
* OpCodeTable: Remove existing thumb instruction implementations
* OpCodeTable: Prepare for thumb instructions
* OpCodeTables: Improve thumb fast lookup
* Tests: Prepare for thumb tests
* T16: Implement BX
* T16: Implement LSL/LSR/ASR (imm)
* T16: Implement ADDS, SUBS (reg)
* T16: Implement ADDS, SUBS (3-bit immediate)
* T16: Implement MOVS, CMP, ADDS, SUBS (8-bit immediate)
* T16: Implement ANDS, EORS, LSLS, LSRS, ASRS, ADCS, SBCS, RORS, TST, NEGS, CMP, CMN, ORRS, MULS, BICS, MVNS (low registers)
* T16: Implement ADD, CMP, MOV (high reg)
* T16: Implement BLX (reg)
* T16: Implement LDR (literal)
* T16: Implement {LDR,STR}{,H,B,SB,SH} (register)
* T16: Implement {LDR,STR}{,B,H} (immediate)
* T16: Implement LDR/STR (SP)
* T16: Implement ADR
* T16: Implement Add to SP (immediate)
* T16: Implement ADD/SUB (SP)
* T16: Implement SXTH, SXTB, UXTH, UTXB
* T16: Implement CBZ, CBNZ
* T16: Implement PUSH, POP
* T16: Implement REV, REV16, REVSH
* T16: Implement NOP
* T16: Implement LDM, STM
* T16: Implement SVC
* T16: Implement B (conditional)
* T16: Implement B (unconditional)
* T16: Implement IT
* fixup! T16: Implement ADD/SUB (SP)
* fixup! T16: Implement Add to SP (immediate)
* fixup! T16: Implement IT
* CpuTestThumb: Add randomized tests
* Remove inITBlock argument
* Address nits
* Use index to handle IfThenBlockState
* Reduce line noise
* fixup
* nit
---
ARMeilleure/Decoders/OpCodeT16AluRegLow.cs | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 ARMeilleure/Decoders/OpCodeT16AluRegLow.cs
(limited to 'ARMeilleure/Decoders/OpCodeT16AluRegLow.cs')
diff --git a/ARMeilleure/Decoders/OpCodeT16AluRegLow.cs b/ARMeilleure/Decoders/OpCodeT16AluRegLow.cs
new file mode 100644
index 00000000..b37b4f66
--- /dev/null
+++ b/ARMeilleure/Decoders/OpCodeT16AluRegLow.cs
@@ -0,0 +1,20 @@
+namespace ARMeilleure.Decoders
+{
+ class OpCodeT16AluRegLow : OpCodeT16, IOpCode32AluReg
+ {
+ public int Rm { get; }
+ public int Rd { get; }
+ public int Rn { get; }
+
+ public bool? SetFlags => null;
+
+ public static new OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeT16AluRegLow(inst, address, opCode);
+
+ public OpCodeT16AluRegLow(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
+ {
+ Rd = (opCode >> 0) & 0x7;
+ Rn = (opCode >> 0) & 0x7;
+ Rm = (opCode >> 3) & 0x7;
+ }
+ }
+}
--
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