3 // Copyright (c) 2007 MIPS Technologies, Inc.
4 // All rights reserved.
6 // Redistribution and use in source and binary forms, with or without
7 // modification, are permitted provided that the following conditions are
8 // met: redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer;
10 // redistributions in binary form must reproduce the above copyright
11 // notice, this list of conditions and the following disclaimer in the
12 // documentation and/or other materials provided with the distribution;
13 // neither the name of the copyright holders nor the names of its
14 // contributors may be used to endorse or promote products derived from
15 // this software without specific prior written permission.
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 // Authors: Korey Sewell
31 ////////////////////////////////////////////////////////////////////
33 // Base class for MIPS instructions, and some support functions
36 //Outputs to decoder.hh
39 using namespace MipsISA;
42 * Base class for all MIPS static instructions.
44 class MipsStaticInst : public StaticInst
49 MipsStaticInst(const char *mnem, MachInst _machInst, OpClass __opClass)
50 : StaticInst(mnem, _machInst, __opClass)
54 /// Print a register name for disassembly given the unique
55 /// dependence tag number (FP or int).
56 void printReg(std::ostream &os, RegId reg) const;
58 std::string generateDisassembly(
59 Addr pc, const SymbolTable *symtab) const override;
63 advancePC(MipsISA::PCState &pc) const override
69 asBytes(void *buf, size_t max_size) override
71 return simpleAsBytes(buf, max_size, machInst);
77 //Ouputs to decoder.cc
80 void MipsStaticInst::printReg(std::ostream &os, RegId reg) const
83 ccprintf(os, "r%d", reg.index());
86 ccprintf(os, "f%d", reg.index());
90 std::string MipsStaticInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
94 ccprintf(ss, "%-10s ", mnemonic);
96 // Need to find standard way to not print
97 // this info. Maybe add bool variable to
99 if (strcmp(mnemonic, "syscall") != 0) {
100 if(_numDestRegs > 0){
101 printReg(ss, _destRegIdx[0]);
104 if(_numSrcRegs > 0) {
106 printReg(ss, _srcRegIdx[0]);
109 if(_numSrcRegs > 1) {
111 printReg(ss, _srcRegIdx[1]);
115 // Should we define a separate inst. class
116 // just for two insts?
117 if (strcmp(mnemonic, "sll") == 0 || strcmp(mnemonic, "sra") == 0) {
118 ccprintf(ss,", %d",SA);