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author | Gabe Black <gblack@eecs.umich.edu> | 2006-03-16 13:58:50 -0500 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2006-03-16 13:58:50 -0500 |
commit | 558cc7f775dc404e4152212b5c6459ad9f4bb269 (patch) | |
tree | 5007156780781c8aee15344ea2348428733a5682 /arch/sparc/isa/formats/priv.isa | |
parent | 67a1b7a61b42abb9be2fb075ec0d4cc2f6414926 (diff) | |
download | gem5-558cc7f775dc404e4152212b5c6459ad9f4bb269.tar.xz |
Fixups towards compiling.
arch/alpha/types.hh:
Moved the DependenceTags enum from types to constants.
arch/sparc/faults.cc:
arch/sparc/faults.hh:
Corrected a misspelling of PriviledgeOpcode and PrivilegedAction.
arch/sparc/isa/formats.isa:
Fixups towards compiling. Added a few additional instruction formats.
--HG--
extra : convert_revision : 4c5506877b71b8a5c8c45db41192cf759cdac374
Diffstat (limited to 'arch/sparc/isa/formats/priv.isa')
-rw-r--r-- | arch/sparc/isa/formats/priv.isa | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/arch/sparc/isa/formats/priv.isa b/arch/sparc/isa/formats/priv.isa new file mode 100644 index 000000000..7c0d8a985 --- /dev/null +++ b/arch/sparc/isa/formats/priv.isa @@ -0,0 +1,172 @@ +//////////////////////////////////////////////////////////////////// +// +// Privelege 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; + }; + + /** + * Base class for user mode "tick" access. + */ + class PrivTick : public SparcStaticInst + { + protected: + // Constructor + PrivTick(const char *mnem, ExtMachInst _machInst, + OpClass __opClass) : + SparcStaticInst(mnem, _machInst, __opClass) + { + } + + 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(SIMM13) + { + } + + uint32_t imm; + }; + + /** + * Base class for user mode "tick" access with immediates. + */ + class PrivTickImm : public PrivTick + { + protected: + // Constructor + PrivTickImm(const char *mnem, ExtMachInst _machInst, + OpClass __opClass) : + PrivTick(mnem, _machInst, __opClass), imm(SIMM13) + { + } + + uint32_t imm; + }; +}}; + +output decoder {{ + std::string Priv::generateDisassembly(Addr pc, + const SymbolTable *symtab) const + { + return "Privileged Instruction"; + } + + std::string PrivTick::generateDisassembly(Addr pc, + const SymbolTable *symtab) const + { + return "Regular access to Tick"; + } +}}; + +def template PrivExecute {{ + Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + %(op_decl)s; + %(op_rd)s; + + //If the processor isn't in privileged mode, fault out right away + if(!pstate_priv) + return new PrivilegedOpCode + + %(code)s; + %(op_wb)s; + } +}}; + +def template PrivTickExecute {{ + Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, + Trace::InstRecord *traceData) const + { + %(op_decl)s; + %(op_rd)s; + + //If the processor isn't in privileged mode, fault out right away + if(!pstate_priv && tick_npt) + return new PrivilegedAction + + %(code)s; + %(op_wb)s; + } +}}; + +def template Rb2OrImm13Decode {{ + { + return (I ? (SparcStaticInst *)(new %(class_name)sImm(machInst)) + : (SparcStaticInst *)(new %(class_name)s(machInst))); + } +}}; + +// Primary format for integer operate instructions: +def format Priv(code, *opt_flags) {{ + uses_imm = (code.find('Rs2_or_imm13') != -1) + if uses_imm: + orig_code = code + code = re.sub(r'Rs2_or_imm', 'Rs2', orig_code) + imm_code = re.sub(r'Rs2_or_imm(\.\w+)?', 'imm', orig_code) + cblk = CodeBlock(code) + iop = InstObjParams(name, Name, 'Priv', cblk, opt_flags) + header_output = BasicDeclare.subst(iop) + decoder_output = BasicConstructor.subst(iop) + exec_output = PrivExecute.subst(iop) + if uses_imm: + imm_cblk = CodeBlock(imm_code) + imm_iop = InstObjParams(name, Name + 'Imm', 'PrivImm', imm_cblk, + opt_flags) + header_output += BasicDeclare.subst(imm_iop) + decoder_output += BasicConstructor.subst(imm_iop) + exec_output += PrivExecute.subst(imm_iop) + decode_block = Rb2OrImm13Decode.subst(iop) + else: + decode_block = BasicDecode.subst(iop) +}}; + +// Primary format for integer operate instructions: +def format PrivTick(code, *opt_flags) {{ + uses_imm = (code.find('Rs2_or_imm13') != -1) + if uses_imm: + orig_code = code + code = re.sub(r'Rs2_or_imm', 'Rs2', orig_code) + imm_code = re.sub(r'Rs2_or_imm(\.\w+)?', 'imm', orig_code) + cblk = CodeBlock(code) + iop = InstObjParams(name, Name, 'PrivTick', cblk, opt_flags) + header_output = BasicDeclare.subst(iop) + decoder_output = BasicConstructor.subst(iop) + exec_output = PrivTickExecute.subst(iop) + if uses_imm: + imm_cblk = CodeBlock(imm_code) + imm_iop = InstObjParams(name, Name + 'Imm', 'PrivTickImm', imm_cblk, + opt_flags) + header_output += BasicDeclare.subst(imm_iop) + decoder_output += BasicConstructor.subst(imm_iop) + exec_output += PrivTickExecute.subst(imm_iop) + decode_block = Rb2OrImm13Decode.subst(iop) + else: + decode_block = BasicDecode.subst(iop) +}}; |