diff options
| author | Chris Lattner <sabre@nondot.org> | 2002-12-25 05:09:21 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2002-12-25 05:09:21 +0000 |
| commit | 5ada8df4882b2a0800157c07530adb0feeddf4f1 (patch) | |
| tree | 15c8d1caa631169b9a861ea97620cb5f49c91e0e /lib/Target/X86/MachineCodeEmitter.cpp | |
| parent | eca1f639eb844ac8d3ac75c45fdc85b68627c80b (diff) | |
Add support for FP prefixes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5151 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/MachineCodeEmitter.cpp')
| -rw-r--r-- | lib/Target/X86/MachineCodeEmitter.cpp | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/lib/Target/X86/MachineCodeEmitter.cpp b/lib/Target/X86/MachineCodeEmitter.cpp index 79c1dbfe00..c2c9045214 100644 --- a/lib/Target/X86/MachineCodeEmitter.cpp +++ b/lib/Target/X86/MachineCodeEmitter.cpp @@ -209,9 +209,9 @@ unsigned sizeOfPtr (const MachineInstrDescriptor &Desc) { case X86II::Arg8: return 1; case X86II::Arg16: return 2; case X86II::Arg32: return 4; - case X86II::Arg64: return 8; - case X86II::Arg80: return 10; - case X86II::Arg128: return 16; + case X86II::ArgF32: return 4; + case X86II::ArgF64: return 8; + case X86II::ArgF80: return 10; default: assert(0 && "Memory size not set!"); return 0; } @@ -224,10 +224,25 @@ void Emitter::emitInstruction(MachineInstr &MI) { // Emit instruction prefixes if neccesary if (Desc.TSFlags & X86II::OpSize) MCE.emitByte(0x66);// Operand size... - if (Desc.TSFlags & X86II::TB) MCE.emitByte(0x0F);// Two-byte opcode prefix + + switch (Desc.TSFlags & X86II::Op0Mask) { + case X86II::TB: + MCE.emitByte(0x0F); // Two-byte opcode prefix + break; + case X86II::D8: case X86II::D9: case X86II::DA: case X86II::DB: + case X86II::DC: case X86II::DD: case X86II::DE: case X86II::DF: + MCE.emitByte(0xD8 + (Desc.TSFlags & X86II::Op0Mask)-X86II::D8); + break; // Two-byte opcode prefix + + default: break; // No prefix! + } unsigned char BaseOpcode = II.getBaseOpcodeFor(Opcode); switch (Desc.TSFlags & X86II::FormMask) { + default: assert(0 && "Unknown FormMask value!"); + case X86II::Pseudo: + std::cerr << "X86 Machine Code Emitter: Not emitting: " << MI; + break; case X86II::RawFrm: MCE.emitByte(BaseOpcode); |