// Copyright (c) 2007 The Hewlett-Packard Development Company // All rights reserved. // // Redistribution and use of this software in source and binary forms, // with or without modification, are permitted provided that the // following conditions are met: // // The software must be used only for Non-Commercial Use which means any // use which is NOT directed to receiving any direct monetary // compensation for, or commercial advantage from such use. Illustrative // examples of non-commercial use are academic research, personal study, // teaching, education and corporate research & development. // Illustrative examples of commercial use are distributing products for // commercial advantage and providing services using the software for // commercial advantage. // // If you wish to use this software or functionality therein that may be // covered by patents for commercial use, please contact: // Director of Intellectual Property Licensing // Office of Strategy and Technology // Hewlett-Packard Company // 1501 Page Mill Road // Palo Alto, California 94304 // // Redistributions of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. Redistributions // in binary form must reproduce the above copyright notice, this list of // conditions and the following disclaimer in the documentation and/or // other materials provided with the distribution. Neither the name of // the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. No right of // sublicense is granted herewith. Derivatives of the software and // output created using the software may be prepared, but only for // Non-Commercial Uses. Derivatives of the software may be shared with // others provided: (i) the others agree to abide by the list of // conditions herein which includes the Non-Commercial Use restrictions; // and (ii) such Derivatives of the software include the above copyright // notice to acknowledge the contribution from this software where // applicable, this list of conditions and the disclaimer below. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // // Authors: Gabe Black //////////////////////////////////////////////////////////////////// // // Decode the one byte opcodes // 0x1: decode OPCODE_OP_TOP5 { format WarnUnimpl { 0x00: decode OPCODE_OP_BOTTOM3 { 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: push_ES(); } 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: pop_ES(); } default: MultiInst::ADD(OPCODE_OP_BOTTOM3, [Eb,Gb], [Ev,Gv], [Gb,Eb], [Gv,Ev], [rAl,Ib], [rAx,Iz]); } 0x01: decode OPCODE_OP_BOTTOM3 { 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: push_CS(); } //Any time this is seen, it should generate a two byte opcode 0x7: M5InternalError::error( {{"Saw a one byte opcode whose value was 0x0F!"}}); default: MultiInst::OR(OPCODE_OP_BOTTOM3, [Eb,Gb], [Ev,Gv], [Gb,Eb], [Gv,Ev], [rAl,Ib], [rAx,Iz]); } 0x02: decode OPCODE_OP_BOTTOM3 { 0x0: adc_Eb_Gb(); 0x1: adc_Ev_Gv(); 0x2: adc_Gb_Eb(); 0x3: adc_Gv_Ev(); 0x4: adc_Al_Ib(); 0x5: adc_rAX_Iz(); 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: push_SS(); } 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: pop_SS(); } } 0x03: decode OPCODE_OP_BOTTOM3 { 0x0: sbb_Eb_Gb(); 0x1: sbb_Ev_Gv(); 0x2: sbb_Gb_Eb(); 0x3: sbb_Gv_Ev(); 0x4: sbb_Al_Ib(); 0x5: sbb_rAX_Iz(); 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: push_DS(); } 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: pop_DS(); } } 0x04: decode OPCODE_OP_BOTTOM3 { 0x6: M5InternalError::error( {{"Tried to execute the ES segment override prefix!"}}); 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: daa(); } default: MultiInst::AND(OPCODE_OP_BOTTOM3, [Eb,Gb], [Ev,Gv], [Gb,Eb], [Gv,Ev], [rAl,Ib], [rAx,Iz]); } 0x05: decode OPCODE_OP_BOTTOM3 { 0x6: M5InternalError::error( {{"Tried to execute the CS segment override prefix!"}}); 0x7: das(); default: MultiInst::SUB(OPCODE_OP_BOTTOM3, [Eb,Gb], [Ev,Gv], [Gb,Eb], [Gv,Ev], [rAl,Ib], [rAx,Iz]); } 0x06: decode OPCODE_OP_BOTTOM3 { 0x6: M5InternalError::error( {{"Tried to execute the SS segment override prefix!"}}); 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: aaa(); } default: MultiInst::XOR(OPCODE_OP_BOTTOM3, [Eb,Gb], [Ev,Gv], [Gb,Eb], [Gv,Ev], [rAl,Ib], [rAx,Iz]); } 0x07: decode OPCODE_OP_BOTTOM3 { 0x6: M5InternalError::error( {{"Tried to execute the DS segment override prefix!"}}); 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: aas(); } default: MultiInst::CMP(OPCODE_OP_BOTTOM3, [Eb,Gb], [Ev,Gv], [Gb,Eb], [Gv,Ev], [rAl,Ib], [rAx,Iz]); } 0x08: decode MODE_SUBMODE { 0x0: M5InternalError::error ( {{"Tried to execute an REX prefix!"}}); default: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::INC(rAx); 0x1: Inst::INC(rCx); 0x2: Inst::INC(rDx); 0x3: Inst::INC(rBx); 0x4: Inst::INC(rSP); 0x5: Inst::INC(rBP); 0x6: Inst::INC(rSI); 0x7: Inst::INC(rDI); } } 0x09: decode MODE_SUBMODE { 0x0: M5InternalError::error ( {{"Tried to execute an REX prefix!"}}); default: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::DEC(rAx); 0x1: Inst::DEC(rCX); 0x2: Inst::DEC(rDx); 0x3: Inst::DEC(rBx); 0x4: Inst::DEC(rSP); 0x5: Inst::DEC(rBP); 0x6: Inst::DEC(rSI); 0x7: Inst::DEC(rDI); } } format Inst { 0x0A: decode OPCODE_OP_BOTTOM3 { 0x0: PUSH(rAx); 0x1: PUSH(rCx); 0x2: PUSH(rDx); 0x3: PUSH(rBx); 0x4: PUSH(rSP); 0x5: PUSH(rBP); 0x6: PUSH(rSI); 0x7: PUSH(rDI); } 0x0B: decode OPCODE_OP_BOTTOM3 { 0x0: POP(rAx); 0x1: POP(rCx); 0x2: POP(rDx); 0x3: POP(rBx); 0x4: POP(rSP); 0x5: POP(rBP); 0x6: POP(rSI); 0x7: POP(rDI); } } 0x0C: decode OPCODE_OP_BOTTOM3 { 0x0: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: pusha(); } 0x1: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: popa(); } 0x2: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: bound_Gv_Ma(); } 0x3: decode MODE_SUBMODE { 0x0: Inst::MOVSXD(Gv,Ed); default: arpl_Ew_Gw(); } 0x4: M5InternalError::error( {{"Tried to execute the FS segment override prefix!"}}); 0x5: M5InternalError::error( {{"Tried to execute the GS segment override prefix!"}}); 0x6: M5InternalError::error( {{"Tried to execute the operand size override prefix!"}}); 0x7: M5InternalError::error( {{"Tried to execute the DS address size override prefix!"}}); } 0x0D: decode OPCODE_OP_BOTTOM3 { 0x0: push_Iz(); 0x1: imul_Gv_Ev_Iz(); 0x2: push_Ib(); 0x3: imul_Gv_Ev_Ib(); 0x4: ins_Yb_Dx(); 0x5: ins_Yz_Dx(); 0x6: outs_Dx_Xb(); 0x7: outs_Dx_Xz(); } 0x0E: decode OPCODE_OP_BOTTOM3 { 0x0: jo_Jb(); 0x1: jno_Jb(); 0x2: jb_Jb(); 0x3: Inst::JNB(Jb); 0x4: Inst::JZ(Jb); 0x5: Inst::JNZ(Jb); 0x6: Inst::JBE(Jb); 0x7: Inst::JNBE(Jb); } 0x0F: decode OPCODE_OP_BOTTOM3 { 0x0: js_Jb(); 0x1: jns_Jb(); 0x2: jp_Jb(); 0x3: jnp_Jb(); 0x4: jl_Jb(); 0x5: jnl_Jb(); 0x6: jle_Jb(); 0x7: Inst::JNLE(Jb); } 0x10: decode OPCODE_OP_BOTTOM3 { //0x0: group1_Eb_Ib(); 0x0: decode MODRM_REG { 0x0: Inst::ADD(Eb,Ib); 0x1: Inst::OR(Eb,Ib); 0x2: adc_Eb_Ib(); 0x3: sbb_Eb_Ib(); 0x4: Inst::AND(Eb,Ib); 0x5: Inst::SUB(Eb,Ib); 0x6: Inst::XOR(Eb,Ib); 0x7: Inst::CMP(Eb,Ib); } //0x1: group1_Ev_Iz(); 0x1: decode MODRM_REG { 0x0: add_Ev_Iz(); 0x1: or_Ev_Ibz(); 0x2: adc_Ev_Iz(); 0x3: sbb_Ev_Iz(); 0x4: Inst::AND(Ev,Iz); 0x5: Inst::SUB(Ev,Iz); 0x6: xor_Ev_Iz(); 0x7: Inst::CMP(Ev,Iz); } 0x2: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); //default: group1_Eb_Ib(); default: decode MODRM_REG { 0x0: Inst::ADD(Eb,Ib); 0x1: Inst::OR(Eb,Ib); 0x2: adc_Eb_Ib(); 0x3: sbb_Eb_Ib(); 0x4: Inst::AND(Eb,Ib); 0x5: Inst::SUB(Eb,Ib); 0x6: Inst::XOR(Eb,Ib); 0x7: Inst::CMP(Eb,Ib); } } //0x3: group1_Ev_Ib(); 0x3: decode MODRM_REG { 0x0: Inst::ADD(Ev,Ib); 0x1: or_Ev_Ib(); 0x2: adc_Ev_Ib(); 0x3: sbb_Ev_Ib(); 0x4: Inst::AND(Ev,Ib); 0x5: sub_Ev_Ib(); 0x6: xor_Ev_Ib(); 0x7: Inst::CMP(Ev,Ib); } 0x4: Inst::TEST(Eb,Gb); 0x5: Inst::TEST(Ev,Gv); 0x6: xchg_Eb_Gb(); 0x7: xchg_Ev_Gv(); } 0x11: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::MOV(Eb,Gb); 0x1: Inst::MOV(Ev,Gv); 0x2: Inst::MOV(Gb,Eb); 0x3: Inst::MOV(Gv,Ev); 0x4: mov_MwRv_Sw(); //What to do with this one? 0x5: Inst::LEA(Gv,M); 0x6: mov_Sw_MwRv(); 0x7: group10_Ev(); //Make sure this is Ev } 0x12: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::NOP(); //XXX repe makes this a "pause" 0x1: xchg_rCX_rAX(); 0x2: xchg_rDX_rAX(); 0x3: xchg_rBX_rAX(); 0x4: xchg_rSP_rAX(); 0x5: xchg_rBP_rAX(); 0x6: xchg_rSI_rAX(); 0x7: xchg_rDI_rAX(); } 0x13: decode OPCODE_OP_BOTTOM3 { 0x0: cbw_or_cwde_or_cdqe_rAX(); 0x1: cwd_or_cdq_or_cqo_rAX_rDX(); 0x2: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: call_Ap(); } 0x3: fwait(); //aka wait 0x4: pushf_Fv(); 0x5: popf_Fv(); //Both of these should be illegal only if CPUID.AHF64=0, //according to sandpile.org 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: sahf(); } 0x7: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: lahf(); } } 0x14: decode OPCODE_OP_BOTTOM3 { 0x0: mov_Al_Ob(); 0x1: mov_rAX_Ov(); 0x2: mov_Ob_Al(); 0x3: mov_Ov_rAX(); 0x4: movs_Yb_Xb(); 0x5: movs_Yv_Xv(); 0x6: cmps_Yb_Xb(); 0x7: cmps_Yv_Xv(); } 0x15: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::TEST(rAl,Ib); 0x1: Inst::TEST(rAX,Iz); 0x2: stos_Yb_Al(); 0x3: stos_Yv_rAX(); 0x4: lods_Al_Xb(); 0x5: lods_rAX_Xv(); 0x6: scas_Yb_Al(); 0x7: scas_Yv_rAX(); } 0x16: decode OPCODE_OP_BOTTOM3 { 0x0: mov_Al_Ib(); 0x1: mov_Cl_Ib(); 0x2: mov_Dl_Ib(); 0x3: mov_Bl_Ib(); 0x4: mov_Ah_Ib(); 0x5: mov_Ch_Ib(); 0x6: mov_Dh_Ib(); 0x7: mov_Bh_Ib(); } format Inst { 0x17: decode OPCODE_OP_BOTTOM3 { 0x0: MOV(rAX,Iv); 0x1: MOV(rCX,Iv); 0x2: MOV(rDX,Iv); 0x3: MOV(rBX,Iv); 0x4: MOV(rSP,Iv); 0x5: MOV(rBP,Iv); 0x6: MOV(rSI,Iv); 0x7: MOV(rDI,Iv); } } 0x18: decode OPCODE_OP_BOTTOM3 { //0x0: group2_Eb_Ib(); 0x0: decode MODRM_REG { 0x0: rol_Eb_Ib(); 0x1: ror_Eb_Ib(); 0x2: rcl_Eb_Ib(); 0x3: rcr_Eb_Ib(); 0x4: Inst::SAL(Eb,Ib); 0x5: shr_Eb_Ib(); 0x6: Inst::SAL(Eb,Ib); 0x7: sar_Eb_Ib(); } //0x1: group2_Ev_Ib(); 0x1: decode MODRM_REG { 0x0: rol_Ev_Ib(); 0x1: ror_Ev_Ib(); 0x2: rcl_Ev_Ib(); 0x3: rcr_Ev_Ib(); 0x4: Inst::SAL(Ev,Ib); 0x5: shr_Ev_Ib(); 0x6: Inst::SAL(Ev,Ib); 0x7: sar_Ev_Ib(); } 0x2: ret_near_Iw(); 0x3: Inst::RET_NEAR(); 0x4: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: les_Gz_Mp(); } 0x5: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: lds_Gz_Mp(); } //0x6: group12_Eb_Ib(); 0x6: decode MODRM_REG { 0x0: Inst::MOV(Eb,Ib); } //0x7: group12_Ev_Iz(); 0x7: decode MODRM_REG { 0x0: Inst::MOV(Ev,Iz); } } 0x19: decode OPCODE_OP_BOTTOM3 { 0x0: enter_Iw_Ib(); 0x1: leave(); 0x2: ret_far_Iw(); 0x3: ret_far(); 0x4: int3(); 0x5: int_Ib(); 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: into(); } 0x7: iret(); } 0x1A: decode OPCODE_OP_BOTTOM3 { 0x0: group2_Eb_1(); 0x1: group2_Ev_1(); 0x2: group2_Eb_Cl(); 0x3: group2_Ev_Cl(); 0x4: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: aam_Ib(); } 0x5: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: aad_Ib(); } 0x6: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: salc(); } 0x7: xlat(); } 0x1B: decode OPCODE_OP_BOTTOM3 { 0x0: esc0(); 0x1: esc1(); 0x2: esc2(); 0x3: esc3(); 0x4: esc4(); 0x5: esc5(); 0x6: esc6(); 0x7: esc7(); } 0x1C: decode OPCODE_OP_BOTTOM3 { 0x0: loopne_Jb(); 0x1: loope_Jb(); 0x2: loop_Jb(); 0x3: jcxz_or_jecx_or_jrcx(); 0x4: in_Al_Ib(); 0x5: in_eAX_Ib(); 0x6: out_Ib_Al(); 0x7: out_Ib_eAX(); } 0x1D: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::CALL_NEAR(Jz); 0x1: jmp_Jz(); 0x2: decode MODE_SUBMODE { 0x0: This_should_be_an_illegal_instruction(); default: jmp_Ap(); } 0x3: Inst::JMP(Jb); 0x4: in_Al_Dx(); 0x5: in_eAX_Dx(); 0x6: out_Dx_Al(); 0x7: out_Dx_eAX(); } 0x1E: decode OPCODE_OP_BOTTOM3 { 0x0: M5InternalError::error( {{"Tried to execute the lock prefix!"}}); 0x1: int1(); 0x2: M5InternalError::error( {{"Tried to execute the repne prefix!"}}); 0x3: M5InternalError::error( {{"Tried to execute the rep/repe prefix!"}}); 0x4: hlt(); 0x5: cmc(); 0x6: group3_Eb(); 0x7: group3_Ev(); } 0x1F: decode OPCODE_OP_BOTTOM3 { 0x0: clc(); 0x1: stc(); 0x2: cli(); 0x3: sti(); 0x4: cld(); 0x5: std(); 0x6: group4(); //0x7: group5(); 0x7: decode MODRM_REG { 0x0: Inst::INC(Ev); 0x1: dev_Ev(); 0x2: call_Ev(); 0x3: call_Mp(); 0x4: jmp_Ev(); 0x5: jmp_Mp(); 0x6: push_Ev(); 0x7: This_should_be_an_illegal_instruction(); } } } default: FailUnimpl::oneByteOps(); }