diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/SConscript | 2 | ||||
| -rw-r--r-- | src/cpu/base.cc | 3 | ||||
| -rw-r--r-- | src/cpu/thread_context.cc | 81 | ||||
| -rw-r--r-- | src/cpu/thread_context.hh | 3 |
4 files changed, 88 insertions, 1 deletions
diff --git a/src/cpu/SConscript b/src/cpu/SConscript index 6b43c6c16..c7d0c33bd 100644 --- a/src/cpu/SConscript +++ b/src/cpu/SConscript @@ -118,6 +118,7 @@ Source('pc_event.cc') Source('quiesce_event.cc') Source('static_inst.cc') Source('simple_thread.cc') +Source('thread_context.cc') Source('thread_state.cc') if env['FULL_SYSTEM']: @@ -150,6 +151,7 @@ if env['USE_CHECKER']: TraceFlag('Activity') TraceFlag('Commit') +TraceFlag('Context') TraceFlag('Decode') TraceFlag('DynInst') TraceFlag('ExecEnable') diff --git a/src/cpu/base.cc b/src/cpu/base.cc index 25bd3f893..7b04f5a90 100644 --- a/src/cpu/base.cc +++ b/src/cpu/base.cc @@ -334,7 +334,8 @@ BaseCPU::takeOverFrom(BaseCPU *oldCPU, Port *ic, Port *dc) newTC->getProcessPtr()->replaceThreadContext(newTC, newTC->readCpuId()); #endif -// TheISA::compareXCs(oldXC, newXC); + if (DTRACE(Context)) + ThreadContext::compare(oldTC, newTC); } #if FULL_SYSTEM diff --git a/src/cpu/thread_context.cc b/src/cpu/thread_context.cc new file mode 100644 index 000000000..10c94027d --- /dev/null +++ b/src/cpu/thread_context.cc @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2006 The Regents of The University of Michigan + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * 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 + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Kevin Lim + */ + +#include "base/misc.hh" +#include "base/trace.hh" +#include "cpu/thread_context.hh" + +void +ThreadContext::compare(ThreadContext *one, ThreadContext *two) +{ + DPRINTF(Context, "Comparing thread contexts\n"); + + // First loop through the integer registers. + for (int i = 0; i < TheISA::NumIntRegs; ++i) { + TheISA::IntReg t1 = one->readIntReg(i); + TheISA::IntReg t2 = two->readIntReg(i); + if (t1 != t2) + panic("Int reg idx %d doesn't match, one: %#x, two: %#x", + i, t1, t2); + } + + // Then loop through the floating point registers. + for (int i = 0; i < TheISA::NumFloatRegs; ++i) { + TheISA::FloatRegBits t1 = one->readFloatRegBits(i); + TheISA::FloatRegBits t2 = two->readFloatRegBits(i); + if (t1 != t2) + panic("Float reg idx %d doesn't match, one: %#x, two: %#x", + i, t1, t2); + } +#if FULL_SYSTEM + for (int i = 0; i < TheISA::NumMiscRegs; ++i) { + TheISA::MiscReg t1 = one->readMiscRegNoEffect(i); + TheISA::MiscReg t2 = two->readMiscRegNoEffect(i); + if (t1 != t2) + panic("Misc reg idx %d doesn't match, one: %#x, two: %#x", + i, t1, t2); + } +#endif + + Addr pc1 = one->readPC(); + Addr pc2 = two->readPC(); + if (pc1 != pc2) + panic("PCs doesn't match, one: %#x, two: %#x", pc1, pc2); + + Addr npc1 = one->readNextPC(); + Addr npc2 = two->readNextPC(); + if (npc1 != npc2) + panic("NPCs doesn't match, one: %#x, two: %#x", npc1, npc2); + + int id1 = one->readCpuId(); + int id2 = two->readCpuId(); + if (id1 != id2) + panic("CPU ids don't match, one: %d, two: %d", id1, id2); +} diff --git a/src/cpu/thread_context.hh b/src/cpu/thread_context.hh index 1af029093..31fdb42c2 100644 --- a/src/cpu/thread_context.hh +++ b/src/cpu/thread_context.hh @@ -268,6 +268,9 @@ class ThreadContext virtual void changeRegFileContext(TheISA::RegContextParam param, TheISA::RegContextVal val) = 0; + + /** function to compare two thread contexts (for debugging) */ + static void compare(ThreadContext *one, ThreadContext *two); }; /** |