2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * Copyright (c) 2007 MIPS Technologies, Inc.
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: Nathan Binkert
34 #ifndef __ARCH_MIPS_UTILITY_HH__
35 #define __ARCH_MIPS_UTILITY_HH__
37 #include "arch/mips/types.hh"
38 #include "base/misc.hh"
39 #include "config/full_system.hh"
40 #include "cpu/thread_context.hh"
41 //XXX This is needed for size_t. We should use something other than size_t
42 //#include "kern/linux/linux.hh"
43 #include "sim/host.hh"
49 //Floating Point Utility Functions
50 uint64_t fpConvert(ConvertType cvt_type, double fp_val);
51 double roundFP(double val, int digits);
52 double truncFP(double val);
54 bool getCondCode(uint32_t fcsr, int cc);
55 uint32_t genCCVector(uint32_t fcsr, int num, uint32_t cc_val);
56 uint32_t genInvalidVector(uint32_t fcsr);
58 bool isNan(void *val_ptr, int size);
59 bool isQnan(void *val_ptr, int size);
60 bool isSnan(void *val_ptr, int size);
63 * Function to insure ISA semantics about 0 registers.
64 * @param tc The thread context.
67 void zeroRegisters(TC *tc);
69 void copyRegs(ThreadContext *src, ThreadContext *dest);
71 // Instruction address compression hooks
72 static inline Addr realPCToFetchPC(const Addr &addr) {
76 static inline Addr fetchPCToRealPC(const Addr &addr) {
80 // the size of "fetched" instructions (not necessarily the size
81 // of real instructions for PISA)
82 static inline size_t fetchInstSize() {
83 return sizeof(MachInst);
86 static inline MachInst makeRegisterCopy(int dest, int src) {
87 panic("makeRegisterCopy not implemented");
91 static inline ExtMachInst
92 makeExtMI(MachInst inst, ThreadContext * xc) {
94 ExtMachInst ext_inst = inst;
95 if (xc->readPC() && 0x1)
96 return ext_inst|=(static_cast<ExtMachInst>(xc->readPC() & 0x1) << 32);
100 return ExtMachInst(inst);
104 inline void startupCPU(ThreadContext *tc, int cpuId)