xref: /gem5/src/arch/x86/isa/decoder/two_byte_opcodes.isa

// Copyright (c) 2007 The Hewlett-Packard Development Company
// All rights reserved.
//
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// following conditions are met:
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// notice to acknowledge the contribution from this software where
// applicable, this list of conditions and the disclaimer below.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// Authors: Gabe Black

////////////////////////////////////////////////////////////////////
//
// Decode the two byte opcodes
//
0x2: decode OPCODE_PREFIXA {
    0x0F: decode OPCODE_OP_TOP5 {
        format WarnUnimpl {
            0x00: decode OPCODE_OP_BOTTOM3 {
                0x00: group6();
                0x01: group7();
                0x02: lar_Gv_Ew();
                0x03: lsl_Gv_Ew();
                //sandpile.org doesn't seem to know what this is... ?
                0x04: loadall_or_reset_or_hang();
                0x05: syscall();
                0x06: clts();
                //sandpile.org says (AMD) after sysret, so I might want to check
                //if that means amd64 or AMD machines
                0x07: loadall_or_sysret();
            }
            0x01: decode OPCODE_OP_BOTTOM3 {
                0x0: holderholder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x02: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x03: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x04: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x05: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x06: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x07: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x08: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x09: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x0A: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x0B: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x0C: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x0D: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x0E: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x0F: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x10: decode OPCODE_OP_BOTTOM3 {
                0x0: jo_Jz();
                0x1: jno_Jz();
                0x2: jb_Jz();
                0x3: jnb_Jz();
                0x4: jz_Jz();
                0x5: Inst::JNZ(Jz);
                0x6: jbe_Jz();
                0x7: jnbe_Jz();
            }
            0x11: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x12: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x13: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x14: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x15: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x16: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x17: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x18: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x19: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x1A: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x1B: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x1C: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x1D: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x1E: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            0x1F: decode OPCODE_OP_BOTTOM3 {
                0x0: holder();
                0x1: holder();
                0x2: holder();
                0x3: holder();
                0x4: holder();
                0x5: holder();
                0x6: holder();
                0x7: holder();
            }
            default: FailUnimpl::twoByteOps();
        }
    }
    default: M5InternalError::error(
        {{"Unexpected first opcode byte in two byte opcode!"}});
}