| // -*- 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: |
| // |
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| // use which is NOT directed to receiving any direct monetary |
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| // 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 |
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| // Office of Strategy and Technology |
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| // 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 |
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| // |
| // 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 X86ISA::X86StaticInst |
| { |
| public: |
| /// Constructor |
| FailUnimplemented(const char *_mnemonic, ExtMachInst _machInst) |
| : X86ISA::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 X86ISA::X86StaticInst |
| { |
| private: |
| /// Have we warned on this instruction yet? |
| mutable bool warned; |
| |
| public: |
| /// Constructor |
| WarnUnimplemented(const char *_mnemonic, ExtMachInst _machInst) |
| : X86ISA::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) |
| }}; |
| |