macroop.isa revision 4343:3f11bcf873b3
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IN NO EVENT SHALL THE COPYRIGHT 48// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 49// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 50// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 54// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55// 56// Authors: Gabe Black 57 58// Execute method for macroops. 59def template MacroExecPanic {{ 60 Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const 61 { 62 panic("Tried to execute macroop directly!"); 63 M5_DUMMY_RETURN 64 } 65}}; 66 67output header {{ 68 69 // Base class for most macroops, except ones that need to commit as 70 // they go. 71 class X86MacroInst : public StaticInst 72 { 73 protected: 74 const uint32_t numMicroOps; 75 76 //Constructor. 77 X86MacroInst(const char *mnem, ExtMachInst _machInst, 78 uint32_t _numMicroOps) 79 : StaticInst(mnem, _machInst, No_OpClass), 80 numMicroOps(_numMicroOps) 81 { 82 assert(numMicroOps); 83 microOps = new StaticInstPtr[numMicroOps]; 84 flags[IsMacroOp] = true; 85 } 86 87 ~X86MacroInst() 88 { 89 delete [] microOps; 90 } 91 92 StaticInstPtr * microOps; 93 94 StaticInstPtr fetchMicroOp(MicroPC microPC) 95 { 96 assert(microPC < numMicroOps); 97 return microOps[microPC]; 98 } 99 100 %(MacroExecPanic)s 101 }; 102}}; 103 104// Basic instruction class constructor template. 105def template MacroConstructor {{ 106 inline %(class_name)s::%(class_name)s(ExtMachInst machInst) 107 : %(base_class)s("%(mnemonic)s", machInst, %(num_micro_ops)s) 108 { 109 %(constructor)s; 110 //alloc_micro_ops is the code that sets up the microOps 111 //array in the parent class. 112 %(alloc_micro_ops)s; 113 } 114}}; 115 116let {{ 117 def genMacroOp(name, Name, opSeq): 118 baseClass = 'X86MacroInst' 119 numMicroOps = len(opSeq.ops) 120 allocMicroOps = '' 121 micropc = 0 122 for op in opSeq.ops: 123 allocMicroOps += \ 124 "microOps[%d] = %s;\n" % \ 125 (micropc, op.getAllocator(True, op.delayed, 126 micropc == 0, 127 micropc == numMicroOps - 1)) 128 micropc += 1 129 iop = InstObjParams(name, Name, baseClass, 130 {'code' : '', 'num_micro_ops' : numMicroOps, 131 'alloc_micro_ops' : allocMicroOps}) 132 header_output = BasicDeclare.subst(iop) 133 decoder_output = MacroConstructor.subst(iop) 134 decode_block = BasicDecode.subst(iop) 135 exec_output = '' 136 return (header_output, decoder_output, decode_block, exec_output) 137}}; 138