diff options
Diffstat (limited to 'src/ARMeilleure/CodeGen/X86/Assembler.cs')
| -rw-r--r-- | src/ARMeilleure/CodeGen/X86/Assembler.cs | 67 |
1 files changed, 44 insertions, 23 deletions
diff --git a/src/ARMeilleure/CodeGen/X86/Assembler.cs b/src/ARMeilleure/CodeGen/X86/Assembler.cs index 67736a31..55bf0724 100644 --- a/src/ARMeilleure/CodeGen/X86/Assembler.cs +++ b/src/ARMeilleure/CodeGen/X86/Assembler.cs @@ -15,7 +15,7 @@ namespace ARMeilleure.CodeGen.X86 private const int OpModRMBits = 24; - private const byte RexPrefix = 0x40; + private const byte RexPrefix = 0x40; private const byte RexWPrefix = 0x48; private const byte LockPrefix = 0xf0; @@ -799,7 +799,7 @@ namespace ARMeilleure.CodeGen.X86 { JumpIndex = _jumps.Count - 1, Position = (int)_stream.Position, - Symbol = source.Symbol + Symbol = source.Symbol, }); } @@ -959,7 +959,7 @@ namespace ARMeilleure.CodeGen.X86 } } - bool needsSibByte = false; + bool needsSibByte = false; bool needsDisplacement = false; int sib = 0; @@ -971,7 +971,7 @@ namespace ARMeilleure.CodeGen.X86 X86Register baseRegLow = (X86Register)(baseReg.Index & 0b111); - needsSibByte = memOp.Index != default || baseRegLow == X86Register.Rsp; + needsSibByte = memOp.Index != default || baseRegLow == X86Register.Rsp; needsDisplacement = memOp.Displacement != 0 || baseRegLow == X86Register.Rbp; if (needsDisplacement) @@ -1049,7 +1049,7 @@ namespace ARMeilleure.CodeGen.X86 InstructionFlags.Prefix66 => 1, InstructionFlags.PrefixF3 => 2, InstructionFlags.PrefixF2 => 3, - _ => 0 + _ => 0, }; if (src1 != default) @@ -1081,11 +1081,19 @@ namespace ARMeilleure.CodeGen.X86 switch (opCodeHigh) { - case 0xf: vexByte1 |= 1; break; - case 0xf38: vexByte1 |= 2; break; - case 0xf3a: vexByte1 |= 3; break; + case 0xf: + vexByte1 |= 1; + break; + case 0xf38: + vexByte1 |= 2; + break; + case 0xf3a: + vexByte1 |= 3; + break; - default: Debug.Assert(false, $"Failed to VEX encode opcode 0x{opCode:X}."); break; + default: + Debug.Assert(false, $"Failed to VEX encode opcode 0x{opCode:X}."); + break; } vexByte2 |= (rexPrefix & 8) << 4; @@ -1191,11 +1199,19 @@ namespace ARMeilleure.CodeGen.X86 switch ((ushort)(opCode >> 8)) { - case 0xf00: mm = 0b01; break; - case 0xf38: mm = 0b10; break; - case 0xf3a: mm = 0b11; break; + case 0xf00: + mm = 0b01; + break; + case 0xf38: + mm = 0b10; + break; + case 0xf3a: + mm = 0b11; + break; - default: Debug.Fail($"Failed to EVEX encode opcode 0x{opCode:X}."); break; + default: + Debug.Fail($"Failed to EVEX encode opcode 0x{opCode:X}."); + break; } WriteByte( @@ -1217,7 +1233,7 @@ namespace ARMeilleure.CodeGen.X86 InstructionFlags.Prefix66 => 0b01, InstructionFlags.PrefixF3 => 0b10, InstructionFlags.PrefixF2 => 0b11, - _ => 0 + _ => 0, }; WriteByte( (byte)( @@ -1233,11 +1249,19 @@ namespace ARMeilleure.CodeGen.X86 byte ll = 0b00; switch (registerWidth) { - case 128: ll = 0b00; break; - case 256: ll = 0b01; break; - case 512: ll = 0b10; break; + case 128: + ll = 0b00; + break; + case 256: + ll = 0b01; + break; + case 512: + ll = 0b10; + break; - default: Debug.Fail($"Invalid EVEX vector register width {registerWidth}."); break; + default: + Debug.Fail($"Invalid EVEX vector register width {registerWidth}."); + break; } // Embedded broadcast in the case of a memory operand bool bcast = broadcast; @@ -1315,10 +1339,7 @@ namespace ARMeilleure.CodeGen.X86 ref Jump jump = ref jumps[i]; // If jump target not resolved yet, resolve it. - if (jump.JumpTarget == null) - { - jump.JumpTarget = _labels[jump.JumpLabel]; - } + jump.JumpTarget ??= _labels[jump.JumpLabel]; long jumpTarget = jump.JumpTarget.Value; long offset = jumpTarget - jump.JumpPosition; @@ -1556,4 +1577,4 @@ namespace ARMeilleure.CodeGen.X86 _stream.WriteByte((byte)(value >> 56)); } } -}
\ No newline at end of file +} |