--- /dev/null
+// 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
+
+////////////////////////////////////////////////////////////////////
+//
+// Base class for sparc instructions, and some support functions
+//
+
+output header {{
+
+ /**
+ * Base class for all X86 static instructions.
+ */
+ class X86StaticInst : public StaticInst
+ {
+ protected:
+ // Constructor.
+ X86StaticInst(const char *mnem,
+ ExtMachInst _machInst, OpClass __opClass)
+ : StaticInst(mnem, _machInst, __opClass)
+ {
+ }
+
+ std::string generateDisassembly(Addr pc,
+ const SymbolTable *symtab) const;
+
+ void printReg(std::ostream &os, int reg) const;
+ void printSrcReg(std::ostream &os, int reg) const;
+ void printDestReg(std::ostream &os, int reg) const;
+ };
+}};
+
+output decoder {{
+
+ inline void printMnemonic(std::ostream &os, const char * mnemonic)
+ {
+ ccprintf(os, "\t%s ", mnemonic);
+ }
+
+ void
+ X86StaticInst::printSrcReg(std::ostream &os, int reg) const
+ {
+ if(_numSrcRegs > reg)
+ printReg(os, _srcRegIdx[reg]);
+ }
+
+ void
+ X86StaticInst::printDestReg(std::ostream &os, int reg) const
+ {
+ if(_numDestRegs > reg)
+ printReg(os, _destRegIdx[reg]);
+ }
+
+ void
+ X86StaticInst::printReg(std::ostream &os, int reg) const
+ {
+ if (reg < FP_Base_DepTag) {
+ //FIXME These should print differently depending on the
+ //mode etc, but for now this will get the point across
+ switch (reg) {
+ case INTREG_RAX:
+ ccprintf(os, "rax");
+ break;
+ case INTREG_RBX:
+ ccprintf(os, "rbx");
+ break;
+ case INTREG_RCX:
+ ccprintf(os, "rcx");
+ break;
+ case INTREG_RDX:
+ ccprintf(os, "rdx");
+ break;
+ case INTREG_RSP:
+ ccprintf(os, "rsp");
+ break;
+ case INTREG_RBP:
+ ccprintf(os, "rbp");
+ break;
+ case INTREG_RSI:
+ ccprintf(os, "rsi");
+ break;
+ case INTREG_RDI:
+ ccprintf(os, "rdi");
+ break;
+ case INTREG_R8W:
+ ccprintf(os, "r8");
+ break;
+ case INTREG_R9W:
+ ccprintf(os, "r9");
+ break;
+ case INTREG_R10W:
+ ccprintf(os, "r10");
+ break;
+ case INTREG_R11W:
+ ccprintf(os, "r11");
+ break;
+ case INTREG_R12W:
+ ccprintf(os, "r12");
+ break;
+ case INTREG_R13W:
+ ccprintf(os, "r13");
+ break;
+ case INTREG_R14W:
+ ccprintf(os, "r14");
+ break;
+ case INTREG_R15W:
+ ccprintf(os, "r15");
+ break;
+ }
+ } else if (reg < Ctrl_Base_DepTag) {
+ ccprintf(os, "%%f%d", reg - FP_Base_DepTag);
+ } else {
+ switch (reg - Ctrl_Base_DepTag) {
+ default:
+ ccprintf(os, "%%ctrl%d", reg - Ctrl_Base_DepTag);
+ }
+ }
+ }
+
+ std::string X86StaticInst::generateDisassembly(Addr pc,
+ const SymbolTable *symtab) const
+ {
+ std::stringstream ss;
+
+ printMnemonic(ss, mnemonic);
+
+ return ss.str();
+ }
+}};
// Bitfield definitions.
//
-def bitfield EXAMPLE <24>;
+//Prefixes
+def bitfield REX rex;
+def bitfield LEGACY legacy;
+// Pieces of the opcode
+def bitfield OPCODE_NUM opcode.num;
+def bitfield OPCODE_PREFIXA opcode.prefixA;
+def bitfield OPCODE_PREFIXB opcode.prefixB;
+def bitfield OPCODE_OP opcode.op;
+//The top 5 bits of the opcode tend to split the instructions into groups
+def bitfield OPCODE_OP_TOP5 opcode.op.top5;
+def bitfield OPCODE_OP_BOTTOM3 opcode.op.bottom3;
+
+// Immediate fields
+def bitfield IMMEDIATE immediate;
+def bitfield DISPLACEMENT displacement;
+
+//Modifier bytes
+def bitfield MODRM modRM;
+def bitfield MODRM_MOD modRM.mod;
+def bitfield MODRM_REG modRM.reg;
+def bitfield MODRM_RM modRM.rm;
+
+def bitfield SIB sib;
+def bitfield SIB_SCALE sib.scale;
+def bitfield SIB_INDEX sib.index;
+def bitfield SIB_BASE sib.base;
// The actual decoder specification
//
-decode EXAMPLE default Unknown::unknown()
+decode OPCODE_NUM default Unknown::unknown()
{
- 0x0: Unknown::unknown2();
+ 0x0: M5InternalError::error(
+ {{"Saw an ExtMachInst with zero opcode bytes!"}});
+ //1 byte opcodes
+ ##include "one_byte_opcodes.isa"
+ //2 byte opcodes
+ ##include "two_byte_opcodes.isa"
+ //3 byte opcodes
+ 0x3: decode OPCODE_PREFIXA {
+ 0xF0: decode OPCODE_PREFIXB {
+ //We don't handle these properly in the predecoder yet, so there's
+ //no reason to implement them for now.
+ 0x38: decode OPCODE_OP {
+ default: FailUnimpl::sseThreeEight();
+ }
+ 0x3A: decode OPCODE_OP {
+ default: FailUnimpl::sseThreeA();
+ }
+ 0xF0: decode OPCODE_OP {
+ default: FailUnimpl::threednow();
+ }
+ default: M5InternalError::error(
+ {{"Unexpected second opcode byte in three byte opcode!"}});
+ }
+ default: M5InternalError::error(
+ {{"Unexpected first opcode byte in three byte opcode!"}});
+ }
}
--- /dev/null
+// 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 {
+ 0x0: add_Eb_Gb();
+ 0x1: add_Ev_Gv();
+ 0x2: add_Gb_Eb();
+ 0x3: add_Gv_Ev();
+ 0x4: add_Al_Ib();
+ 0x5: add_rAX_Iz();
+ 0x6: push_ES();
+ 0x7: pop_ES();
+ }
+ 0x01: decode OPCODE_OP_BOTTOM3 {
+ 0x0: or_Eb_Gb();
+ 0x1: or_Ev_Gv();
+ 0x2: or_Gb_Eb();
+ 0x3: or_Gv_Ev();
+ 0x4: or_Al_Ib();
+ 0x5: or_rAX_Iz();
+ 0x6: 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!"}});
+ }
+ 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: push_SS();
+ 0x7: 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: push_DS();
+ 0x7: pop_DS();
+ }
+ 0x04: decode OPCODE_OP_BOTTOM3 {
+ 0x0: and_Eb_Gb();
+ 0x1: and_Ev_Gv();
+ 0x2: and_Gb_Eb();
+ 0x3: and_Gv_Ev();
+ 0x4: and_Al_Ib();
+ 0x5: and_rAX_Iz();
+ 0x6: M5InternalError::error(
+ {{"Tried to execute the ES segment override prefix!"}});
+ 0x7: daa();
+ }
+ 0x05: decode OPCODE_OP_BOTTOM3 {
+ 0x0: sub_Eb_Gb();
+ 0x1: sub_Ev_Gv();
+ 0x2: sub_Gb_Eb();
+ 0x3: sub_Gv_Ev();
+ 0x4: sub_Al_Ib();
+ 0x5: sub_rAX_Iz();
+ 0x6: M5InternalError::error(
+ {{"Tried to execute the CS segment override prefix!"}});
+ 0x7: das();
+ }
+ 0x06: decode OPCODE_OP_BOTTOM3 {
+ 0x0: xor_Eb_Gb();
+ 0x1: xor_Ev_Gv();
+ 0x2: xor_Gb_Eb();
+ 0x3: xor_Gv_Ev();
+ 0x4: xor_Al_Ib();
+ 0x5: xor_rAX_Iz();
+ 0x6: M5InternalError::error(
+ {{"Tried to execute the SS segment override prefix!"}});
+ 0x7: aaa();
+ }
+ 0x07: decode OPCODE_OP_BOTTOM3 {
+ 0x0: cmp_Eb_Gb();
+ 0x1: cmp_Ev_Gv();
+ 0x2: cmp_Gb_Eb();
+ 0x3: cmp_Gv_Ev();
+ 0x4: cmp_Al_Ib();
+ 0x5: cmp_rAX_Iz();
+ 0x6: M5InternalError::error(
+ {{"Tried to execute the DS segment override prefix!"}});
+ 0x7: aas();
+ }
+ 0x08: decode OPCODE_OP_BOTTOM3 {
+ 0x0: inc_eAX();
+ 0x1: inc_eCX();
+ 0x2: inc_eDX();
+ 0x3: inc_eBX();
+ 0x4: inc_eSP();
+ 0x5: inc_eBP();
+ 0x6: inc_eSI();
+ 0x7: inc_eDI();
+ }
+ 0x09: decode OPCODE_OP_BOTTOM3 {
+ 0x0: dec_eAX();
+ 0x1: dec_eCX();
+ 0x2: dec_eDX();
+ 0x3: dec_eBX();
+ 0x4: dec_eSP();
+ 0x5: dec_eBP();
+ 0x6: dec_eSI();
+ 0x7: dec_eDI();
+ }
+ 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: pusha();
+ 0x1: popa();
+ 0x2: bound_Gv_Ma();
+ 0x3: 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: jnb_Jb();
+ 0x4: jz_Jb();
+ 0x5: jnz_Jb();
+ 0x6: jbe_Jb();
+ 0x7: 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: jnke_Jb();
+ }
+ 0x10: decode OPCODE_OP_BOTTOM3 {
+ 0x0: group1_Eb_Ib();
+ 0x1: group1_Ev_Iz();
+ 0x2: group1_Eb_Ib();
+ 0x3: group1_Ev_Ib();
+ 0x4: test_Eb_Gb();
+ 0x5: test_Ev_Gv();
+ 0x6: xchg_Eb_Gb();
+ 0x7: xchg_Ev_Gv();
+ }
+ 0x11: decode OPCODE_OP_BOTTOM3 {
+ 0x0: mov_Eb_Gb();
+ 0x1: mov_Ev_Gv();
+ 0x2: mov_Gb_Eb();
+ 0x3: mov_Gv_Ev();
+ 0x4: mov_MwRv_Sw();
+ 0x5: lea_Gv_M();
+ 0x6: mov_Sw_MwRv();
+ 0x7: group10_Ev(); //Make sure this is Ev
+ }
+ 0x12: decode OPCODE_OP_BOTTOM3 {
+ 0x0: nop_or_pause(); //Check for repe prefix
+ 0x1: xchg_rCX_rAX();
+ 0x2: xchg_rDX_rAX();
+ 0x3: xchg_rVX_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: call_Ap();
+ 0x3: fwait(); //aka wait
+ 0x4: pushf_Fv();
+ 0x5: popf_Fv();
+ 0x6: sahf();
+ 0x7: 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: test_Al_Ib();
+ 0x1: 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();
+ }
+ 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();
+ 0x1: group2_Ev_Ib();
+ 0x2: ret_near_Iw();
+ 0x3: ret_near();
+ 0x4: les_Gz_Mp();
+ 0x5: lds_Gz_Mp();
+ 0x6: group12_Eb_Ib();
+ 0x7: group12_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: 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: aam_Ib();
+ 0x5: aad_Ib();
+ 0x6: 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: call_Jz();
+ 0x1: jmp_Jz();
+ 0x2: jmp_Ap();
+ 0x3: 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();
+ }
+ }
+ default: FailUnimpl::oneByteOps();
+}
--- /dev/null
+// 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 two byte opcodes
+//
+0x2: decode OPCODE_PREFIXA {
+ 0xF0: 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();
+ //sandpile.org says (AMD) after syscall, so I might want to check
+ //if that means amd64 or AMD machines
+ 0x05: loadall_or_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: holder();
+ 0x1: holder();
+ 0x2: holder();
+ 0x3: holder();
+ 0x4: holder();
+ 0x5: holder();
+ 0x6: holder();
+ 0x7: holder();
+ }
+ 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!"}});
+}
def template BasicDecodeWithMnemonic {{
return new %(class_name)s("%(mnemonic)s", machInst);
}};
+
+// The most basic instruction format... used only for a few misc. insts
+def format BasicOperate(code, *flags) {{
+ iop = InstObjParams(name, Name, 'SparcStaticInst', code, flags)
+ header_output = BasicDeclare.subst(iop)
+ decoder_output = BasicConstructor.subst(iop)
+ decode_block = BasicDecode.subst(iop)
+ exec_output = BasicExecute.subst(iop)
+}};
--- /dev/null
+// -*- mode:c++ -*-
+
+// 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
+
+////////////////////////////////////////////////////////////////////
+//
+// "Format" which really indicates an internal error. This is a more
+// significant problem for x86 than for other ISAs because of it's complex
+// ExtMachInst type.
+//
+
+def template ErrorDecode {{
+ {
+ panic("X86 decoder internal error: '%%s' %%s",
+ %(message)s, machInst);
+ }
+}};
+
+def format M5InternalError(error_message) {{
+ iop = InstObjParams(name, 'M5InternalError')
+ iop.message = error_message
+ decode_block = ErrorDecode.subst(iop)
+}};
+
//Include the "unknown" format
##include "unknown.isa"
+
+//Include the "unimp" format
+##include "unimp.isa"
+
+//Include a format to signal m5 internal errors. This is used to indicate a
+//malfunction of the decode mechanism.
+##include "error.isa"
--- /dev/null
+// -*- mode:c++ -*-
+
+// 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
+
+////////////////////////////////////////////////////////////////////
+//
+// Unimplemented instructions
+//
+
+output header {{
+ /**
+ * Static instruction class for unimplemented instructions that
+ * cause simulator termination. Note that these are recognized
+ * (legal) instructions that the simulator does not support; the
+ * 'Unknown' class is used for unrecognized/illegal instructions.
+ * This is a leaf class.
+ */
+ class FailUnimplemented : public X86StaticInst
+ {
+ public:
+ /// Constructor
+ FailUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
+ : X86StaticInst(_mnemonic, _machInst, No_OpClass)
+ {
+ // don't call execute() (which panics) if we're on a
+ // speculative path
+ flags[IsNonSpeculative] = true;
+ }
+
+ %(BasicExecDeclare)s
+
+ std::string
+ generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+ };
+
+ /**
+ * Base class for unimplemented instructions that cause a warning
+ * to be printed (but do not terminate simulation). This
+ * implementation is a little screwy in that it will print a
+ * warning for each instance of a particular unimplemented machine
+ * instruction, not just for each unimplemented opcode. Should
+ * probably make the 'warned' flag a static member of the derived
+ * class.
+ */
+ class WarnUnimplemented : public X86StaticInst
+ {
+ private:
+ /// Have we warned on this instruction yet?
+ mutable bool warned;
+
+ public:
+ /// Constructor
+ WarnUnimplemented(const char *_mnemonic, ExtMachInst _machInst)
+ : X86StaticInst(_mnemonic, _machInst, No_OpClass), warned(false)
+ {
+ // don't call execute() (which panics) if we're on a
+ // speculative path
+ flags[IsNonSpeculative] = true;
+ }
+
+ %(BasicExecDeclare)s
+
+ std::string
+ generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+ };
+}};
+
+output decoder {{
+ std::string
+ FailUnimplemented::generateDisassembly(Addr pc,
+ const SymbolTable *symtab) const
+ {
+ return csprintf("%-10s (unimplemented)", mnemonic);
+ }
+
+ std::string
+ WarnUnimplemented::generateDisassembly(Addr pc,
+ const SymbolTable *symtab) const
+ {
+#ifdef SS_COMPATIBLE_DISASSEMBLY
+ return csprintf("%-10s", mnemonic);
+#else
+ return csprintf("%-10s (unimplemented)", mnemonic);
+#endif
+ }
+}};
+
+output exec {{
+ Fault
+ FailUnimplemented::execute(%(CPU_exec_context)s *xc,
+ Trace::InstRecord *traceData) const
+ {
+ panic("attempt to execute unimplemented instruction '%s' %s",
+ mnemonic, machInst);
+ return NoFault;
+ }
+
+ Fault
+ WarnUnimplemented::execute(%(CPU_exec_context)s *xc,
+ Trace::InstRecord *traceData) const
+ {
+ if (!warned) {
+ warn("instruction '%s' unimplemented\n", mnemonic);
+ warned = true;
+ }
+
+ return NoFault;
+ }
+}};
+
+
+def format FailUnimpl() {{
+ iop = InstObjParams(name, 'FailUnimplemented')
+ decode_block = BasicDecodeWithMnemonic.subst(iop)
+}};
+
+def format WarnUnimpl() {{
+ iop = InstObjParams(name, 'WarnUnimplemented')
+ decode_block = BasicDecodeWithMnemonic.subst(iop)
+}};
+
##include "operands.isa"
//Include the base class for x86 instructions, and some support code
-//##include "base.isa"
+##include "base.isa"
//Include the definitions for the instruction formats
##include "formats/formats.isa"
//Include the decoder definition
-##include "decoder.isa"
+##include "decoder/decoder.isa"
uint8_t nextByte = getNextByte();
switch(state)
{
- case Prefix:
+ case PrefixState:
state = doPrefixState(nextByte);
break;
- case Opcode:
+ case OpcodeState:
state = doOpcodeState(nextByte);
break;
- case ModRM:
+ case ModRMState:
state = doModRMState(nextByte);
break;
- case SIB:
+ case SIBState:
state = doSIBState(nextByte);
break;
- case Displacement:
+ case DisplacementState:
state = doDisplacementState();
break;
- case Immediate:
+ case ImmediateState:
state = doImmediateState();
break;
case ErrorState:
Predecoder::State Predecoder::doPrefixState(uint8_t nextByte)
{
uint8_t prefix = Prefixes[nextByte];
- State nextState = Prefix;
+ State nextState = PrefixState;
if(prefix)
consumeByte();
switch(prefix)
case Repne:
DPRINTF(Predecoder, "Found repne prefix.\n");
break;
- case Rex:
+ case RexPrefix:
DPRINTF(Predecoder, "Found Rex prefix %#x.\n", nextByte);
- emi.rexPrefix = nextByte;
+ emi.rex = nextByte;
break;
case 0:
- emi.numOpcodes = 0;
- nextState = Opcode;
+ emi.opcode.num = 0;
+ nextState = OpcodeState;
break;
default:
panic("Unrecognized prefix %#x\n", nextByte);
Predecoder::State Predecoder::doOpcodeState(uint8_t nextByte)
{
State nextState = ErrorState;
- emi.numOpcodes++;
+ emi.opcode.num++;
//We can't handle 3+ byte opcodes right now
- assert(emi.numOpcodes < 2);
+ assert(emi.opcode.num < 3);
consumeByte();
- if(nextByte == 0xf0)
+ if(emi.opcode.num == 1 && nextByte == 0x0f)
{
- nextState = Opcode;
+ nextState = OpcodeState;
DPRINTF(Predecoder, "Found two byte opcode.\n");
+ emi.opcode.prefixA = nextByte;
+ }
+ else if(emi.opcode.num == 2 &&
+ (nextByte == 0x0f ||
+ (nextByte & 0xf8) == 0x38))
+ {
+ panic("Three byte opcodes aren't yet supported!\n");
+ nextState = OpcodeState;
+ DPRINTF(Predecoder, "Found three byte opcode.\n");
+ emi.opcode.prefixB = nextByte;
}
else
{
DPRINTF(Predecoder, "Found opcode %#x.\n", nextByte);
+ emi.opcode.op = nextByte;
//Prepare for any immediate/displacement we might need
immediateCollected = 0;
//Figure out how big of an immediate we'll retreive based
//on the opcode.
int immType = ImmediateType[
- emi.numOpcodes - 1][nextByte];
+ emi.opcode.num - 1][nextByte];
if(0) //16 bit mode
immediateSize = ImmediateTypeToSize[0][immType];
- else if(!(emi.rexPrefix & 0x4)) //32 bit mode
+ else if(!(emi.rex & 0x4)) //32 bit mode
immediateSize = ImmediateTypeToSize[1][immType];
else //64 bit mode
immediateSize = ImmediateTypeToSize[2][immType];
//Determine what to expect next
- if (UsesModRM[emi.numOpcodes - 1][nextByte]) {
- nextState = ModRM;
+ if (UsesModRM[emi.opcode.num - 1][nextByte]) {
+ nextState = ModRMState;
} else if(immediateSize) {
- nextState = Immediate;
+ nextState = ImmediateState;
} else {
emiIsReady = true;
- nextState = Prefix;
+ nextState = PrefixState;
}
}
return nextState;
Predecoder::State Predecoder::doModRMState(uint8_t nextByte)
{
State nextState = ErrorState;
+ emi.modRM = nextByte;
DPRINTF(Predecoder, "Found modrm byte %#x.\n", nextByte);
if (0) {//FIXME in 16 bit mode
//figure out 16 bit displacement size
if(nextByte & 0x7 == 4 &&
nextByte & 0xC0 != 0xC0) {
// && in 32/64 bit mode)
- nextState = SIB;
+ nextState = SIBState;
} else if(displacementSize) {
- nextState = Displacement;
+ nextState = DisplacementState;
} else if(immediateSize) {
- nextState = Immediate;
+ nextState = ImmediateState;
} else {
emiIsReady = true;
- nextState = Prefix;
+ nextState = PrefixState;
}
//The ModRM byte is consumed no matter what
consumeByte();
Predecoder::State Predecoder::doSIBState(uint8_t nextByte)
{
State nextState = ErrorState;
+ emi.sib = nextByte;
DPRINTF(Predecoder, "Found SIB byte %#x.\n", nextByte);
consumeByte();
if(displacementSize) {
- nextState = Displacement;
+ nextState = DisplacementState;
} else if(immediateSize) {
- nextState = Immediate;
+ nextState = ImmediateState;
} else {
emiIsReady = true;
- nextState = Prefix;
+ nextState = PrefixState;
}
return nextState;
}
DPRINTF(Predecoder, "Collected displacement %#x.\n",
emi.displacement);
if(immediateSize) {
- nextState = Immediate;
+ nextState = ImmediateState;
} else {
emiIsReady = true;
- nextState = Prefix;
+ nextState = PrefixState;
}
}
else
- nextState = Displacement;
+ nextState = DisplacementState;
return nextState;
}
DPRINTF(Predecoder, "Collected immediate %#x.\n",
emi.immediate);
emiIsReady = true;
- nextState = Prefix;
+ nextState = PrefixState;
}
else
- nextState = Immediate;
+ nextState = ImmediateState;
return nextState;
}
}
int immediateCollected;
enum State {
- Prefix,
- Opcode,
- ModRM,
- SIB,
- Displacement,
- Immediate,
+ PrefixState,
+ OpcodeState,
+ ModRMState,
+ SIBState,
+ DisplacementState,
+ ImmediateState,
//We should never get to this state. Getting here is an error.
ErrorState
};
Predecoder(ThreadContext * _tc) :
tc(_tc), basePC(0), offset(0),
outOfBytes(true), emiIsReady(false),
- state(Prefix)
+ state(PrefixState)
{}
ThreadContext * getTC()
const uint8_t LO = Lock;
const uint8_t RE = Rep;
const uint8_t RN = Repne;
- const uint8_t RX = Rex;
+ const uint8_t RX = RexPrefix;
//This table identifies whether a byte is a prefix, and if it is,
//which prefix it is.
#include <inttypes.h>
#include <iostream>
+#include "base/bitfield.hh"
+#include "base/cprintf.hh"
+
namespace X86ISA
{
//This really determines how many bytes are passed to the predecoder.
SSOverride = 6,
//The Rex prefix obviously doesn't fit in with the above, but putting
//it here lets us save double the space the enums take up.
- Rex = 7,
+ RexPrefix = 7,
//There can be only one segment override, so they share the
//first 3 bits in the legacyPrefixes bitfield.
SegmentOverride = 0x7,
Repne = 128
};
+ BitUnion8(ModRM)
+ Bitfield<7,6> mod;
+ Bitfield<5,3> reg;
+ Bitfield<2,0> rm;
+ EndBitUnion(ModRM)
+
+ BitUnion8(Sib)
+ Bitfield<7,6> scale;
+ Bitfield<5,3> index;
+ Bitfield<2,0> base;
+ EndBitUnion(Sib)
+
+ BitUnion8(Rex)
+ Bitfield<3> w;
+ Bitfield<2> r;
+ Bitfield<1> x;
+ Bitfield<0> b;
+ EndBitUnion(Rex)
+
+ BitUnion8(Opcode)
+ Bitfield<7,3> top5;
+ Bitfield<2,0> bottom3;
+ EndBitUnion(Opcode)
+
//The intermediate structure the x86 predecoder returns.
struct ExtMachInst
{
- public: //XXX These should be hidden in the future
-
- uint8_t legacyPrefixes;
- uint8_t rexPrefix;
- //Right now, we ignore that this can be 3 in
- //some cases
- uint8_t numOpcodes;
- //This will need to be decoded specially later
- bool is3dnow;
- uint8_t opcode;
+ //Prefixes
+ uint8_t legacy;
+ Rex rex;
+ //This holds all of the bytes of the opcode
+ struct
+ {
+ //The number of bytes in this opcode. Right now, we ignore that
+ //this can be 3 in some cases
+ uint8_t num;
+ //The first byte detected in a 2+ byte opcode. Should be 0xF0.
+ uint8_t prefixA;
+ //The second byte detected in a 3+ byte opcode. Could be 0xF0 for
+ //3dnow instructions, or 0x38-0x3F for some SSE instructions.
+ uint8_t prefixB;
+ //The main opcode byte. The highest addressed byte in the opcode.
+ Opcode op;
+ } opcode;
+ //Modifier bytes
+ ModRM modRM;
+ uint8_t sib;
+ //Immediate fields
uint64_t immediate;
uint64_t displacement;
-
- public:
-
- //These are to pacify the decoder for now. This will go away once
- //it can handle non integer inputs, and in the mean time allow me to
- //excercise the predecoder a little.
- operator unsigned int()
- {
- return 0;
- }
-
- ExtMachInst(unsigned int)
- {;}
-
- ExtMachInst()
- {;}
};
inline static std::ostream &
operator << (std::ostream & os, const ExtMachInst & emi)
{
- os << "{X86 ExtMachInst}";
+ ccprintf(os, "\n{\n\tleg = %#x,\n\trex = %#x,\n\t"
+ "op = {\n\t\tnum = %d,\n\t\top = %#x,\n\t\t"
+ "prefixA = %#x,\n\t\tprefixB = %#x\n\t},\n\t"
+ "modRM = %#x,\n\tsib = %#x,\n\t"
+ "immediate = %#x,\n\tdisplacement = %#x\n}\n",
+ emi.legacy, (uint8_t)emi.rex,
+ emi.opcode.num, emi.opcode.op,
+ emi.opcode.prefixA, emi.opcode.prefixB,
+ (uint8_t)emi.modRM, (uint8_t)emi.sib,
+ emi.immediate, emi.displacement);
return os;
}
projects / gem5.git / commitdiff