/*
- * Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2010-2012, 2015, 2017 ARM Limited
+ * Copyright (c) 2020 Barkhausen Institut
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* 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: Nathan Binkert
*/
+#include "sim/pseudo_inst.hh"
+
#include <fcntl.h>
#include <unistd.h>
+#include <array>
#include <cerrno>
#include <fstream>
#include <string>
+#include <vector>
-#include "arch/vtophys.hh"
#include "base/debug.hh"
-#include "config/full_system.hh"
+#include "base/output.hh"
#include "config/the_isa.hh"
#include "cpu/base.hh"
#include "cpu/quiesce_event.hh"
#include "debug/Loader.hh"
#include "debug/Quiesce.hh"
#include "debug/WorkItems.hh"
+#include "dev/net/dist_iface.hh"
#include "params/BaseCPU.hh"
-#include "sim/pseudo_inst.hh"
+#include "sim/full_system.hh"
+#include "sim/process.hh"
#include "sim/serialize.hh"
#include "sim/sim_events.hh"
#include "sim/sim_exit.hh"
#include "sim/stat_control.hh"
#include "sim/stats.hh"
#include "sim/system.hh"
-
-#if FULL_SYSTEM
-#include "arch/kernel_stats.hh"
#include "sim/vptr.hh"
-#endif
using namespace std;
-
using namespace Stats;
-using namespace TheISA;
-namespace PseudoInst {
+namespace PseudoInst
+{
+
+/**
+ * Unique keys to retrieve various params by the initParam pseudo inst.
+ *
+ * @note Each key may be at most 16 characters (because we use
+ * two 64-bit registers to pass in the key to the initparam function).
+ */
+namespace InitParamKey
+{
-#if FULL_SYSTEM
+/**
+ * The default key (empty string)
+ */
+const std::string DEFAULT = "";
+/**
+ * Unique key for "rank" param (distributed gem5 runs)
+ */
+const std::string DIST_RANK = "dist-rank";
+/**
+ * Unique key for "size" param (distributed gem5 runs)
+ */
+const std::string DIST_SIZE = "dist-size";
+
+} // namespace InitParamKey
+
+static inline void
+panicFsOnlyPseudoInst(const char *name)
+{
+ panic("Pseudo inst \"%s\" is only available in Full System mode.");
+}
void
arm(ThreadContext *tc)
{
- if (tc->getKernelStats())
- tc->getKernelStats()->arm();
+ DPRINTF(PseudoInst, "PseudoInst::arm()\n");
+ if (!FullSystem)
+ panicFsOnlyPseudoInst("arm");
+
+ auto *workload = tc->getSystemPtr()->workload;
+ if (workload)
+ workload->recordArm();
}
void
quiesce(ThreadContext *tc)
{
- if (!tc->getCpuPtr()->params()->do_quiesce)
- return;
-
- DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name());
-
- tc->suspend();
- if (tc->getKernelStats())
- tc->getKernelStats()->quiesce();
+ DPRINTF(PseudoInst, "PseudoInst::quiesce()\n");
+ tc->quiesce();
}
void
quiesceSkip(ThreadContext *tc)
{
- BaseCPU *cpu = tc->getCpuPtr();
-
- if (!cpu->params()->do_quiesce)
- return;
-
- EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
-
- Tick resume = curTick() + 1;
-
- cpu->reschedule(quiesceEvent, resume, true);
-
- DPRINTF(Quiesce, "%s: quiesceSkip() until %d\n",
- cpu->name(), resume);
-
- tc->suspend();
- if (tc->getKernelStats())
- tc->getKernelStats()->quiesce();
+ DPRINTF(PseudoInst, "PseudoInst::quiesceSkip()\n");
+ tc->quiesceTick(tc->getCpuPtr()->nextCycle() + 1);
}
void
quiesceNs(ThreadContext *tc, uint64_t ns)
{
- BaseCPU *cpu = tc->getCpuPtr();
-
- if (!cpu->params()->do_quiesce || ns == 0)
- return;
-
- EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
-
- Tick resume = curTick() + SimClock::Int::ns * ns;
-
- cpu->reschedule(quiesceEvent, resume, true);
-
- DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n",
- cpu->name(), ns, resume);
-
- tc->suspend();
- if (tc->getKernelStats())
- tc->getKernelStats()->quiesce();
+ DPRINTF(PseudoInst, "PseudoInst::quiesceNs(%i)\n", ns);
+ tc->quiesceTick(curTick() + SimClock::Int::ns * ns);
}
void
quiesceCycles(ThreadContext *tc, uint64_t cycles)
{
- BaseCPU *cpu = tc->getCpuPtr();
-
- if (!cpu->params()->do_quiesce || cycles == 0)
- return;
-
- EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
-
- Tick resume = curTick() + cpu->ticks(cycles);
-
- cpu->reschedule(quiesceEvent, resume, true);
-
- DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n",
- cpu->name(), cycles, resume);
-
- tc->suspend();
- if (tc->getKernelStats())
- tc->getKernelStats()->quiesce();
+ DPRINTF(PseudoInst, "PseudoInst::quiesceCycles(%i)\n", cycles);
+ tc->quiesceTick(tc->getCpuPtr()->clockEdge(Cycles(cycles)));
}
uint64_t
quiesceTime(ThreadContext *tc)
{
+ DPRINTF(PseudoInst, "PseudoInst::quiesceTime()\n");
+
return (tc->readLastActivate() - tc->readLastSuspend()) /
SimClock::Int::ns;
}
-#endif
-
uint64_t
rpns(ThreadContext *tc)
{
+ DPRINTF(PseudoInst, "PseudoInst::rpns()\n");
return curTick() / SimClock::Int::ns;
}
void
wakeCPU(ThreadContext *tc, uint64_t cpuid)
{
+ DPRINTF(PseudoInst, "PseudoInst::wakeCPU(%i)\n", cpuid);
System *sys = tc->getSystemPtr();
- ThreadContext *other_tc = sys->threadContexts[cpuid];
+
+ if (sys->threads.size() <= cpuid) {
+ warn("PseudoInst::wakeCPU(%i), cpuid greater than number of contexts"
+ "(%i)\n", cpuid, sys->threads.size());
+ return;
+ }
+
+ ThreadContext *other_tc = sys->threads[cpuid];
if (other_tc->status() == ThreadContext::Suspended)
other_tc->activate();
}
void
m5exit(ThreadContext *tc, Tick delay)
{
- Tick when = curTick() + delay * SimClock::Int::ns;
- exitSimLoop("m5_exit instruction encountered", 0, when);
+ DPRINTF(PseudoInst, "PseudoInst::m5exit(%i)\n", delay);
+ if (DistIface::readyToExit(delay)) {
+ Tick when = curTick() + delay * SimClock::Int::ns;
+ exitSimLoop("m5_exit instruction encountered", 0, when, 0, true);
+ }
}
-#if FULL_SYSTEM
+void
+m5fail(ThreadContext *tc, Tick delay, uint64_t code)
+{
+ DPRINTF(PseudoInst, "PseudoInst::m5fail(%i, %i)\n", delay, code);
+ Tick when = curTick() + delay * SimClock::Int::ns;
+ exitSimLoop("m5_fail instruction encountered", code, when, 0, true);
+}
void
loadsymbol(ThreadContext *tc)
{
+ DPRINTF(PseudoInst, "PseudoInst::loadsymbol()\n");
+ if (!FullSystem)
+ panicFsOnlyPseudoInst("loadsymbol");
+
const string &filename = tc->getCpuPtr()->system->params()->symbolfile;
if (filename.empty()) {
return;
if (!to_number(address, addr))
continue;
- if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
+ if (!tc->getSystemPtr()->workload->insertSymbol(
+ { Loader::Symbol::Binding::Global, symbol, addr })) {
continue;
+ }
DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
void
addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
{
- char symb[100];
- CopyStringOut(tc, symb, symbolAddr, 100);
- std::string symbol(symb);
+ DPRINTF(PseudoInst, "PseudoInst::addsymbol(0x%x, 0x%x)\n",
+ addr, symbolAddr);
+ if (!FullSystem)
+ panicFsOnlyPseudoInst("addSymbol");
+
+ std::string symbol;
+ tc->getVirtProxy().readString(symbol, symbolAddr);
DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
- tc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
- debugSymbolTable->insert(addr,symbol);
+ tc->getSystemPtr()->workload->insertSymbol(
+ { Loader::Symbol::Binding::Global, symbol, addr });
+ Loader::debugSymbolTable.insert(
+ { Loader::Symbol::Binding::Global, symbol, addr });
}
uint64_t
-initParam(ThreadContext *tc)
+initParam(ThreadContext *tc, uint64_t key_str1, uint64_t key_str2)
{
- return tc->getCpuPtr()->system->init_param;
-}
+ DPRINTF(PseudoInst, "PseudoInst::initParam() key:%s%s\n", (char *)&key_str1,
+ (char *)&key_str2);
+ if (!FullSystem) {
+ panicFsOnlyPseudoInst("initParam");
+ return 0;
+ }
-#endif
+ // The key parameter string is passed in via two 64-bit registers. We copy
+ // out the characters from the 64-bit integer variables here, and
+ // concatenate them in the key character buffer
+ const int len = 2 * sizeof(uint64_t) + 1;
+ char key[len];
+ memset(key, '\0', len);
+
+ std::array<uint64_t, 2> key_regs = {{ key_str1, key_str2 }};
+ key_regs = letoh(key_regs);
+ memcpy(key, key_regs.data(), sizeof(key_regs));
+
+ // Check key parameter to figure out what to return.
+ const std::string key_str(key);
+ if (key == InitParamKey::DEFAULT)
+ return tc->getCpuPtr()->system->init_param;
+ else if (key == InitParamKey::DIST_RANK)
+ return DistIface::rankParam();
+ else if (key == InitParamKey::DIST_SIZE)
+ return DistIface::sizeParam();
+ else
+ panic("Unknown key for initparam pseudo instruction:\"%s\"", key_str);
+}
void
resetstats(ThreadContext *tc, Tick delay, Tick period)
{
+ DPRINTF(PseudoInst, "PseudoInst::resetstats(%i, %i)\n", delay, period);
if (!tc->getCpuPtr()->params()->do_statistics_insts)
return;
void
dumpstats(ThreadContext *tc, Tick delay, Tick period)
{
+ DPRINTF(PseudoInst, "PseudoInst::dumpstats(%i, %i)\n", delay, period);
if (!tc->getCpuPtr()->params()->do_statistics_insts)
return;
void
dumpresetstats(ThreadContext *tc, Tick delay, Tick period)
{
+ DPRINTF(PseudoInst, "PseudoInst::dumpresetstats(%i, %i)\n", delay, period);
if (!tc->getCpuPtr()->params()->do_statistics_insts)
return;
void
m5checkpoint(ThreadContext *tc, Tick delay, Tick period)
{
+ DPRINTF(PseudoInst, "PseudoInst::m5checkpoint(%i, %i)\n", delay, period);
if (!tc->getCpuPtr()->params()->do_checkpoint_insts)
return;
- Tick when = curTick() + delay * SimClock::Int::ns;
- Tick repeat = period * SimClock::Int::ns;
-
- exitSimLoop("checkpoint", 0, when, repeat);
+ if (DistIface::readyToCkpt(delay, period)) {
+ Tick when = curTick() + delay * SimClock::Int::ns;
+ Tick repeat = period * SimClock::Int::ns;
+ exitSimLoop("checkpoint", 0, when, repeat);
+ }
}
-#if FULL_SYSTEM
-
uint64_t
readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
{
+ DPRINTF(PseudoInst, "PseudoInst::readfile(0x%x, 0x%x, 0x%x)\n",
+ vaddr, len, offset);
+ if (!FullSystem) {
+ panicFsOnlyPseudoInst("readfile");
+ return 0;
+ }
+
const string &file = tc->getSystemPtr()->params()->readfile;
if (file.empty()) {
return ULL(0);
}
close(fd);
- CopyIn(tc, vaddr, buf, result);
+ tc->getVirtProxy().writeBlob(vaddr, buf, result);
delete [] buf;
return result;
}
-#endif
+uint64_t
+writefile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset,
+ Addr filename_addr)
+{
+ DPRINTF(PseudoInst, "PseudoInst::writefile(0x%x, 0x%x, 0x%x, 0x%x)\n",
+ vaddr, len, offset, filename_addr);
+
+ // copy out target filename
+ std::string filename;
+ tc->getVirtProxy().readString(filename, filename_addr);
+
+ OutputStream *out;
+ if (offset == 0) {
+ // create a new file (truncate)
+ out = simout.create(filename, true, true);
+ } else {
+ // do not truncate file if offset is non-zero
+ // (ios::in flag is required as well to keep the existing data
+ // intact, otherwise existing data will be zeroed out.)
+ out = simout.open(filename, ios::in | ios::out | ios::binary, true);
+ }
+
+ ostream *os(out->stream());
+ if (!os)
+ panic("could not open file %s\n", filename);
+
+ if (offset != 0) {
+ // seek to offset
+ os->seekp(offset);
+ }
+
+ // copy out data and write to file
+ char *buf = new char[len];
+ tc->getVirtProxy().readBlob(vaddr, buf, len);
+ os->write(buf, len);
+ if (os->fail() || os->bad())
+ panic("Error while doing writefile!\n");
+
+ simout.close(out);
+
+ delete [] buf;
+
+ return len;
+}
void
debugbreak(ThreadContext *tc)
{
+ DPRINTF(PseudoInst, "PseudoInst::debugbreak()\n");
Debug::breakpoint();
}
void
switchcpu(ThreadContext *tc)
{
+ DPRINTF(PseudoInst, "PseudoInst::switchcpu()\n");
exitSimLoop("switchcpu");
}
+/*
+ * This function is executed when the simulation is executing the syscall
+ * handler in System Emulation mode.
+ */
+void
+m5Syscall(ThreadContext *tc)
+{
+ DPRINTF(PseudoInst, "PseudoInst::m5Syscall()\n");
+ Fault fault;
+ tc->syscall(&fault);
+}
+
+void
+togglesync(ThreadContext *tc)
+{
+ DPRINTF(PseudoInst, "PseudoInst::togglesync()\n");
+ DistIface::toggleSync(tc);
+}
+
//
-// This function is executed when annotated work items begin. Depending on
+// This function is executed when annotated work items begin. Depending on
// what the user specified at the command line, the simulation may exit and/or
// take a checkpoint when a certain work item begins.
//
void
workbegin(ThreadContext *tc, uint64_t workid, uint64_t threadid)
{
- tc->getCpuPtr()->workItemBegin();
+ DPRINTF(PseudoInst, "PseudoInst::workbegin(%i, %i)\n", workid, threadid);
System *sys = tc->getSystemPtr();
const System::Params *params = sys->params();
- sys->workItemBegin(threadid, workid);
- DPRINTF(WorkItems, "Work Begin workid: %d, threadid %d\n", workid,
+ if (params->exit_on_work_items) {
+ exitSimLoop("workbegin", static_cast<int>(workid));
+ return;
+ }
+
+ DPRINTF(WorkItems, "Work Begin workid: %d, threadid %d\n", workid,
threadid);
+ tc->getCpuPtr()->workItemBegin();
+ sys->workItemBegin(threadid, workid);
//
// If specified, determine if this is the specific work item the user
}
//
-// This function is executed when annotated work items end. Depending on
+// This function is executed when annotated work items end. Depending on
// what the user specified at the command line, the simulation may exit and/or
// take a checkpoint when a certain work item ends.
//
void
workend(ThreadContext *tc, uint64_t workid, uint64_t threadid)
{
- tc->getCpuPtr()->workItemEnd();
+ DPRINTF(PseudoInst, "PseudoInst::workend(%i, %i)\n", workid, threadid);
System *sys = tc->getSystemPtr();
const System::Params *params = sys->params();
- sys->workItemEnd(threadid, workid);
+
+ if (params->exit_on_work_items) {
+ exitSimLoop("workend", static_cast<int>(workid));
+ return;
+ }
DPRINTF(WorkItems, "Work End workid: %d, threadid %d\n", workid, threadid);
+ tc->getCpuPtr()->workItemEnd();
+ sys->workItemEnd(threadid, workid);
//
// If specified, determine if this is the specific work item the user
projects / gem5.git / blobdiff