diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/sparc/insts/SConscript | 1 | ||||
| -rw-r--r-- | src/arch/sparc/insts/priv.cc | 101 | ||||
| -rw-r--r-- | src/arch/sparc/insts/priv.hh | 113 | ||||
| -rw-r--r-- | src/arch/sparc/isa/decoder.isa | 26 | ||||
| -rw-r--r-- | src/arch/sparc/isa/formats/priv.isa | 292 | ||||
| -rw-r--r-- | src/arch/sparc/isa/includes.isa | 1 |
6 files changed, 294 insertions, 240 deletions
diff --git a/src/arch/sparc/insts/SConscript b/src/arch/sparc/insts/SConscript index 94996f6b2..1e2797351 100644 --- a/src/arch/sparc/insts/SConscript +++ b/src/arch/sparc/insts/SConscript @@ -32,4 +32,5 @@ Import('*') if env['TARGET_ISA'] == 'sparc': + Source('priv.cc') Source('static_inst.cc') diff --git a/src/arch/sparc/insts/priv.cc b/src/arch/sparc/insts/priv.cc new file mode 100644 index 000000000..ce6d04446 --- /dev/null +++ b/src/arch/sparc/insts/priv.cc @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2006-2007 The Regents of The University of Michigan + * All rights reserved + * Copyright 2017 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: 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 holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * 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: Ali Saidi + * Gabe Black + * Steve Reinhardt + */ + +#include "arch/sparc/insts/priv.hh" + +namespace SparcISA +{ + +std::string +Priv::generateDisassembly(Addr pc, const SymbolTable *symtab) const +{ + std::stringstream response; + + printMnemonic(response, mnemonic); + + return response.str(); +} + +std::string +RdPriv::generateDisassembly(Addr pc, const SymbolTable *symtab) const +{ + std::stringstream response; + + printMnemonic(response, mnemonic); + + ccprintf(response, " %%%s, ", regName); + printDestReg(response, 0); + + return response.str(); +} + +std::string +WrPriv::generateDisassembly(Addr pc, const SymbolTable *symtab) const +{ + std::stringstream response; + + printMnemonic(response, mnemonic); + + ccprintf(response, " "); + // If the first reg is %g0, don't print it. + // This improves readability + if (_srcRegIdx[0].index() != 0) { + printSrcReg(response, 0); + ccprintf(response, ", "); + } + printSrcReg(response, 1); + ccprintf(response, ", %%%s", regName); + + return response.str(); +} + +std::string +WrPrivImm::generateDisassembly(Addr pc, const SymbolTable *symtab) const +{ + std::stringstream response; + + printMnemonic(response, mnemonic); + + ccprintf(response, " "); + // If the first reg is %g0, don't print it. + // This improves readability + if (_srcRegIdx[0].index() != 0) { + printSrcReg(response, 0); + ccprintf(response, ", "); + } + ccprintf(response, "%#x, %%%s", imm, regName); + + return response.str(); +} + +} diff --git a/src/arch/sparc/insts/priv.hh b/src/arch/sparc/insts/priv.hh new file mode 100644 index 000000000..6530d09f8 --- /dev/null +++ b/src/arch/sparc/insts/priv.hh @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2006-2007 The Regents of The University of Michigan + * All rights reserved + * Copyright 2017 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: 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 holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * 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: Ali Saidi + * Gabe Black + * Steve Reinhardt + */ + +#ifndef __ARCH_SPARC_INSTS_PRIV_HH__ +#define __ARCH_SPARC_INSTS_PRIV_HH__ + +#include "arch/sparc/insts/static_inst.hh" + +namespace SparcISA +{ + +/** + * Base class for privelege mode operations. + */ +class Priv : public SparcStaticInst +{ + protected: + using SparcStaticInst::SparcStaticInst; + std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; +}; + +class PrivReg : public Priv +{ + protected: + PrivReg(const char *mnem, ExtMachInst _machInst, + OpClass __opClass, char const * _regName) : + Priv(mnem, _machInst, __opClass), regName(_regName) + {} + + char const *regName; +}; + +// This class is for instructions that explicitly read control +// registers. It provides a special generateDisassembly function. +class RdPriv : public PrivReg +{ + protected: + using PrivReg::PrivReg; + std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; +}; + +// This class is for instructions that explicitly write control +// registers. It provides a special generateDisassembly function. +class WrPriv : public PrivReg +{ + protected: + using PrivReg::PrivReg; + std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; +}; + +/** + * Base class for privelege mode operations with immediates. + */ +class PrivImm : public Priv +{ + protected: + // Constructor + PrivImm(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : + Priv(mnem, _machInst, __opClass), imm(bits(_machInst, 12, 0)) + {} + + int32_t imm; +}; + +// This class is for instructions that explicitly write control +// registers. It provides a special generateDisassembly function. +class WrPrivImm : public PrivImm +{ + protected: + // Constructor + WrPrivImm(const char *mnem, ExtMachInst _machInst, + OpClass __opClass, char const *_regName) : + PrivImm(mnem, _machInst, __opClass), regName(_regName) + {} + + std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const; + + char const *regName; +} +; +} + +#endif //__ARCH_SPARC_INSTS_PRIV_HH__ diff --git a/src/arch/sparc/isa/decoder.isa b/src/arch/sparc/isa/decoder.isa index 492e1a00a..799fff253 100644 --- a/src/arch/sparc/isa/decoder.isa +++ b/src/arch/sparc/isa/decoder.isa @@ -367,7 +367,7 @@ decode OP default Unknown::unknown() } 0x29: decode RS1 { 0x00: HPriv::rdhprhpstate({{Rd = Hpstate;}}); - 0x01: HPriv::rdhprhtstate({{Rd = Htstate;}}, checkTl=true); + 0x01: HPriv::rdhprhtstate({{Rd = Htstate;}}, check_tl=true); // 0x02 should cause an illegal instruction exception 0x03: HPriv::rdhprhintp({{Rd = Hintp;}}); // 0x04 should cause an illegal instruction exception @@ -377,10 +377,10 @@ decode OP default Unknown::unknown() 0x1F: HPriv::rdhprhstick_cmpr({{Rd = HstickCmpr;}}); } 0x2A: decode RS1 { - 0x00: Priv::rdprtpc({{Rd = Tpc;}}, checkTl=true); - 0x01: Priv::rdprtnpc({{Rd = Tnpc;}}, checkTl=true); - 0x02: Priv::rdprtstate({{Rd = Tstate;}}, checkTl=true); - 0x03: Priv::rdprtt({{Rd = Tt;}}, checkTl=true); + 0x00: Priv::rdprtpc({{Rd = Tpc;}}, check_tl=true); + 0x01: Priv::rdprtnpc({{Rd = Tnpc;}}, check_tl=true); + 0x02: Priv::rdprtstate({{Rd = Tstate;}}, check_tl=true); + 0x03: Priv::rdprtt({{Rd = Tt;}}, check_tl=true); 0x04: Priv::rdprtick({{Rd = Tick;}}); 0x05: Priv::rdprtba({{Rd = Tba;}}); 0x06: Priv::rdprpstate({{Rd = Pstate;}}); @@ -469,7 +469,7 @@ decode OP default Unknown::unknown() 0x00: NoPriv::wry({{Y = (Rs1 ^ Rs2_or_imm13)<31:0>;}}); // 0x01 should cause an illegal instruction exception 0x02: NoPriv::wrccr({{Ccr = Rs1 ^ Rs2_or_imm13;}}); - 0x03: NoPriv::wrasi({{Asi = Rs1 ^ Rs2_or_imm13;}}, false, + 0x03: NoPriv::wrasi({{Asi = Rs1 ^ Rs2_or_imm13;}}, IsSquashAfter); // 0x04-0x05 should cause an illegal instruction exception 0x06: NoPriv::wrfprs({{Fprs = Rs1 ^ Rs2_or_imm13;}}); @@ -525,13 +525,13 @@ decode OP default Unknown::unknown() } 0x32: decode RD { 0x00: Priv::wrprtpc( - {{Tpc = Rs1 ^ Rs2_or_imm13;}}, checkTl=true); + {{Tpc = Rs1 ^ Rs2_or_imm13;}}, check_tl=true); 0x01: Priv::wrprtnpc( - {{Tnpc = Rs1 ^ Rs2_or_imm13;}}, checkTl=true); + {{Tnpc = Rs1 ^ Rs2_or_imm13;}}, check_tl=true); 0x02: Priv::wrprtstate( - {{Tstate = Rs1 ^ Rs2_or_imm13;}}, checkTl=true); + {{Tstate = Rs1 ^ Rs2_or_imm13;}}, check_tl=true); 0x03: Priv::wrprtt( - {{Tt = Rs1 ^ Rs2_or_imm13;}}, checkTl=true); + {{Tt = Rs1 ^ Rs2_or_imm13;}}, check_tl=true); 0x04: HPriv::wrprtick({{Tick = Rs1 ^ Rs2_or_imm13;}}); 0x05: Priv::wrprtba({{Tba = Rs1 ^ Rs2_or_imm13;}}); 0x06: Priv::wrprpstate({{Pstate = Rs1 ^ Rs2_or_imm13;}}); @@ -560,7 +560,7 @@ decode OP default Unknown::unknown() 0x33: decode RD { 0x00: HPriv::wrhprhpstate({{Hpstate = Rs1 ^ Rs2_or_imm13;}}); 0x01: HPriv::wrhprhtstate( - {{Htstate = Rs1 ^ Rs2_or_imm13;}}, checkTl=true); + {{Htstate = Rs1 ^ Rs2_or_imm13;}}, check_tl=true); // 0x02 should cause an illegal instruction exception 0x03: HPriv::wrhprhintp({{Hintp = Rs1 ^ Rs2_or_imm13;}}); // 0x04 should cause an illegal instruction exception @@ -1082,7 +1082,7 @@ decode OP default Unknown::unknown() NPC = Tnpc; NNPC = Tnpc + 4; Tl = Tl - 1; - }}, checkTl=true); + }}, check_tl=true); 0x1: Priv::retry({{ Cwp = Tstate<4:0>; Pstate = Tstate<20:8>; @@ -1093,7 +1093,7 @@ decode OP default Unknown::unknown() NPC = Tpc; NNPC = Tnpc; Tl = Tl - 1; - }}, checkTl=true); + }}, check_tl=true); } } } diff --git a/src/arch/sparc/isa/formats/priv.isa b/src/arch/sparc/isa/formats/priv.isa index c581f0fef..eabc331c9 100644 --- a/src/arch/sparc/isa/formats/priv.isa +++ b/src/arch/sparc/isa/formats/priv.isa @@ -33,226 +33,77 @@ // Privilege mode instructions // -output header {{ - /** - * Base class for privelege mode operations. - */ - class Priv : public SparcStaticInst - { - protected: - // Constructor - Priv(const char *mnem, ExtMachInst _machInst, OpClass __opClass) : - SparcStaticInst(mnem, _machInst, __opClass) - { - } - - std::string generateDisassembly(Addr pc, - const SymbolTable *symtab) const; - }; - - // This class is for instructions that explicitly read control - // registers. It provides a special generateDisassembly function. - class RdPriv : public Priv - { - protected: - // Constructor - RdPriv(const char *mnem, ExtMachInst _machInst, - OpClass __opClass, char const * _regName) : - Priv(mnem, _machInst, __opClass), regName(_regName) - { - } - - std::string generateDisassembly(Addr pc, - const SymbolTable *symtab) const; - - char const * regName; - }; - - // This class is for instructions that explicitly write control - // registers. It provides a special generateDisassembly function. - class WrPriv : public Priv - { - protected: - // Constructor - WrPriv(const char *mnem, ExtMachInst _machInst, - OpClass __opClass, char const * _regName) : - Priv(mnem, _machInst, __opClass), regName(_regName) - { - } - - std::string generateDisassembly(Addr pc, - const SymbolTable *symtab) const; - - char const * regName; - }; - - /** - * Base class for privelege mode operations with immediates. - */ - class PrivImm : public Priv - { - protected: - // Constructor - PrivImm(const char *mnem, ExtMachInst _machInst, - OpClass __opClass) : - Priv(mnem, _machInst, __opClass), imm(SIMM13) - { - } - - int32_t imm; - }; - - // This class is for instructions that explicitly write control - // registers. It provides a special generateDisassembly function. - class WrPrivImm : public PrivImm - { - protected: - // Constructor - WrPrivImm(const char *mnem, ExtMachInst _machInst, - OpClass __opClass, char const * _regName) : - PrivImm(mnem, _machInst, __opClass), regName(_regName) - { - } - - std::string generateDisassembly(Addr pc, - const SymbolTable *symtab) const; - - char const * regName; - }; -}}; - -output decoder {{ - std::string - Priv::generateDisassembly(Addr pc, const SymbolTable *symtab) const - { - std::stringstream response; - - printMnemonic(response, mnemonic); - - return response.str(); - } - - std::string - RdPriv::generateDisassembly(Addr pc, const SymbolTable *symtab) const - { - std::stringstream response; - - printMnemonic(response, mnemonic); - - ccprintf(response, " %%%s, ", regName); - printDestReg(response, 0); - - return response.str(); - } - - std::string - WrPriv::generateDisassembly(Addr pc, const SymbolTable *symtab) const - { - std::stringstream response; - - printMnemonic(response, mnemonic); - - ccprintf(response, " "); - // If the first reg is %g0, don't print it. - // This improves readability - if (_srcRegIdx[0].index() != 0) { - printSrcReg(response, 0); - ccprintf(response, ", "); - } - printSrcReg(response, 1); - ccprintf(response, ", %%%s", regName); - - return response.str(); - } - - std::string WrPrivImm::generateDisassembly(Addr pc, - const SymbolTable *symtab) const - { - std::stringstream response; - - printMnemonic(response, mnemonic); - - ccprintf(response, " "); - // If the first reg is %g0, don't print it. - // This improves readability - if (_srcRegIdx[0].index() != 0) { - printSrcReg(response, 0); - ccprintf(response, ", "); - } - ccprintf(response, "0x%x, %%%s", imm, regName); - - return response.str(); - } -}}; - def template ControlRegConstructor {{ - %(class_name)s::%(class_name)s(ExtMachInst machInst) - : %(base_class)s("%(mnemonic)s", machInst, - %(op_class)s, "%(reg_name)s") - { - %(constructor)s; - } +%(class_name)s::%(class_name)s(ExtMachInst machInst) : + %(base_class)s("%(mnemonic)s", machInst, %(op_class)s, "%(reg_name)s") +{ + %(constructor)s; +} }}; def template PrivExecute {{ - Fault %(class_name)s::execute(ExecContext *xc, - Trace::InstRecord *traceData) const - { - %(op_decl)s; - %(op_rd)s; - - // If the processor isn't in privileged mode, fault out right away - if (%(check)s) - return std::make_shared<PrivilegedAction>(); - - if (%(tlCheck)s) - return std::make_shared<IllegalInstruction>(); - - Fault fault = NoFault; - %(code)s; - %(op_wb)s; - return fault; - } +Fault +%(class_name)s::execute(ExecContext *xc, Trace::InstRecord *traceData) const +{ + %(op_decl)s; + %(op_rd)s; + + // If the processor isn't in privileged mode, fault out right away + if (%(check)s) + return std::make_shared<PrivilegedAction>(); + + %(tl_check)s + + Fault fault = NoFault; + %(code)s; + %(op_wb)s; + return fault; +} }}; let {{ - def doPrivFormat(code, checkCode, name, Name, tlCheck, opt_flags): - (usesImm, code, immCode, - rString, iString) = splitOutImm(code) - #If these are rd, rdpr, rdhpr, wr, wrpr, or wrhpr instructions, - #cut any other info out of the mnemonic. Also pick a different - #base class. - regBase = 'Priv' - regName = '' + tl_check_code = ''' + if (Tl == 0) + return std::make_shared<IllegalInstruction>(); +''' + + def doPrivFormat(code, check_code, name, Name, opt_flags, check_tl=False): + (uses_imm, code, imm_code, r_string, i_string) = splitOutImm(code) + tl_check = tl_check_code if check_tl else '' + # If these are rd, rdpr, rdhpr, wr, wrpr, or wrhpr instructions, + # cut any other info out of the mnemonic. Also pick a different + # base class. + reg_base = 'Priv' + reg_name = '' for mnem in ["rdhpr", "rdpr", "rd"]: if name.startswith(mnem): - regName = name[len(mnem):] + reg_name = name[len(mnem):] name = mnem - regBase = 'RdPriv' + reg_base = 'RdPriv' break for mnem in ["wrhpr", "wrpr", "wr"]: if name.startswith(mnem): - regName = name[len(mnem):] + reg_name = name[len(mnem):] name = mnem - regBase = 'WrPriv' + reg_base = 'WrPriv' break - iop = InstObjParams(name, Name, regBase, - {"code": code, "check": checkCode, - "tlCheck": tlCheck, "reg_name": regName}, + iop = InstObjParams(name, Name, reg_base, + {"code": code, "check": check_code, + "tl_check": tl_check, "reg_name": reg_name}, opt_flags) header_output = BasicDeclare.subst(iop) - if regName == '': + if reg_name == '': decoder_output = BasicConstructor.subst(iop) else: decoder_output = ControlRegConstructor.subst(iop) exec_output = PrivExecute.subst(iop) - if usesImm: - imm_iop = InstObjParams(name, Name + 'Imm', regBase + 'Imm', - {"code": immCode, "check": checkCode, - "tlCheck": tlCheck, "reg_name": regName}, + if uses_imm: + imm_iop = InstObjParams(name, Name + 'Imm', reg_base + 'Imm', + {"code": imm_code, "check": check_code, + "tl_check": tl_check, "reg_name": reg_name}, opt_flags) header_output += BasicDeclare.subst(imm_iop) - if regName == '': + if reg_name == '': decoder_output += BasicConstructor.subst(imm_iop) else: decoder_output += ControlRegConstructor.subst(imm_iop) @@ -263,39 +114,26 @@ let {{ return (header_output, decoder_output, exec_output, decode_block) }}; -def format Priv(code, extraCond=true, checkTl=false, *opt_flags) {{ - checkCode = "(%s) && !(Pstate.priv || Hpstate.hpriv)" % extraCond - if checkTl != "false": - tlCheck = "Tl == 0" - else: - tlCheck = "false" - (header_output, decoder_output, - exec_output, decode_block) = doPrivFormat(code, - checkCode, name, Name, tlCheck, opt_flags) +def format Priv(code, extraCond=true, check_tl=false, *opt_flags) {{ + check_code = "(%s) && !(Pstate.priv || Hpstate.hpriv)" % extraCond + (header_output, decoder_output, exec_output, decode_block) = \ + doPrivFormat(code, check_code, name, Name, opt_flags, + check_tl=(check_tl != 'false')) }}; -def format NoPriv(code, checkTl=false, *opt_flags) {{ - #Instructions which use this format don't really check for - #any particular mode, but the disassembly is performed - #using the control registers actual name - checkCode = "false" - if checkTl != "false": - tlCheck = "Tl == 0" - else: - tlCheck = "false" - (header_output, decoder_output, - exec_output, decode_block) = doPrivFormat(code, - checkCode, name, Name, tlCheck, opt_flags) +def format NoPriv(code, *opt_flags) {{ + # Instructions which use this format don't really check for any + # particular mode, but the disassembly is performed using the control + # register's actual name + check_code = "false" + (header_output, decoder_output, exec_output, decode_block) = \ + doPrivFormat(code, check_code, name, Name, opt_flags) }}; -def format HPriv(code, checkTl=false, *opt_flags) {{ - checkCode = "!Hpstate.hpriv" - if checkTl != "false": - tlCheck = "Tl == 0" - else: - tlCheck = "false" - (header_output, decoder_output, - exec_output, decode_block) = doPrivFormat(code, - checkCode, name, Name, tlCheck, opt_flags) +def format HPriv(code, check_tl=false, *opt_flags) {{ + check_code = "!Hpstate.hpriv" + (header_output, decoder_output, exec_output, decode_block) = \ + doPrivFormat(code, check_code, name, Name, opt_flags, + check_tl=(check_tl != 'false')) }}; diff --git a/src/arch/sparc/isa/includes.isa b/src/arch/sparc/isa/includes.isa index 4b745f4c0..eba30976d 100644 --- a/src/arch/sparc/isa/includes.isa +++ b/src/arch/sparc/isa/includes.isa @@ -39,6 +39,7 @@ output header {{ #include <sstream> #include "arch/sparc/faults.hh" +#include "arch/sparc/insts/priv.hh" #include "arch/sparc/insts/static_inst.hh" #include "arch/sparc/isa_traits.hh" #include "arch/sparc/registers.hh" |