/*
- * Copyright (c) 2010-2012 ARM Limited
+ * Copyright (c) 2010-2012, 2015, 2017 ARM Limited
* 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 <string>
#include <vector>
-#include "arch/kernel_stats.hh"
-#include "arch/utility.hh"
-#include "arch/vtophys.hh"
-#include "arch/pseudo_inst.hh"
#include "base/debug.hh"
#include "base/output.hh"
#include "config/the_isa.hh"
#include "cpu/quiesce_event.hh"
#include "cpu/thread_context.hh"
#include "debug/Loader.hh"
-#include "debug/PseudoInst.hh"
#include "debug/Quiesce.hh"
#include "debug/WorkItems.hh"
+#include "dev/net/dist_iface.hh"
+#include "kern/kernel_stats.hh"
#include "params/BaseCPU.hh"
#include "sim/full_system.hh"
+#include "sim/initparam_keys.hh"
#include "sim/process.hh"
-#include "sim/pseudo_inst.hh"
#include "sim/serialize.hh"
#include "sim/sim_events.hh"
#include "sim/sim_exit.hh"
#include "sim/vptr.hh"
using namespace std;
-
using namespace Stats;
-using namespace TheISA;
-namespace PseudoInst {
+namespace PseudoInst
+{
static inline void
panicFsOnlyPseudoInst(const char *name)
panic("Pseudo inst \"%s\" is only available in Full System mode.");
}
-uint64_t
-pseudoInst(ThreadContext *tc, uint8_t func, uint8_t subfunc)
-{
- uint64_t args[4];
-
- DPRINTF(PseudoInst, "PseudoInst::pseudoInst(%i, %i)\n", func, subfunc);
-
- // We need to do this in a slightly convoluted way since
- // getArgument() might have side-effects on arg_num. We could have
- // used the Argument class, but due to the possible side effects
- // from getArgument, it'd most likely break.
- int arg_num(0);
- for (int i = 0; i < sizeof(args) / sizeof(*args); ++i) {
- args[arg_num] = getArgument(tc, arg_num, sizeof(uint64_t), false);
- ++arg_num;
- }
-
- switch (func) {
- case 0x00: // arm_func
- arm(tc);
- break;
-
- case 0x01: // quiesce_func
- quiesce(tc);
- break;
-
- case 0x02: // quiescens_func
- quiesceSkip(tc);
- break;
-
- case 0x03: // quiescecycle_func
- quiesceNs(tc, args[0]);
- break;
-
- case 0x04: // quiescetime_func
- return quiesceTime(tc);
-
- case 0x07: // rpns_func
- return rpns(tc);
-
- case 0x09: // wakecpu_func
- wakeCPU(tc, args[0]);
- break;
-
- case 0x21: // exit_func
- m5exit(tc, args[0]);
- break;
-
- case 0x22:
- m5fail(tc, args[0], args[1]);
- break;
-
- case 0x30: // initparam_func
- return initParam(tc);
-
- case 0x31: // loadsymbol_func
- loadsymbol(tc);
- break;
-
- case 0x40: // resetstats_func
- resetstats(tc, args[0], args[1]);
- break;
-
- case 0x41: // dumpstats_func
- dumpstats(tc, args[0], args[1]);
- break;
-
- case 0x42: // dumprststats_func
- dumpresetstats(tc, args[0], args[1]);
- break;
-
- case 0x43: // ckpt_func
- m5checkpoint(tc, args[0], args[1]);
- break;
-
- case 0x4f: // writefile_func
- return writefile(tc, args[0], args[1], args[2], args[3]);
-
- case 0x50: // readfile_func
- return readfile(tc, args[0], args[1], args[2]);
-
- case 0x51: // debugbreak_func
- debugbreak(tc);
- break;
-
- case 0x52: // switchcpu_func
- switchcpu(tc);
- break;
-
- case 0x53: // addsymbol_func
- addsymbol(tc, args[0], args[1]);
- break;
-
- case 0x54: // panic_func
- panic("M5 panic instruction called at %s\n", tc->pcState());
-
- case 0x5a: // work_begin_func
- workbegin(tc, args[0], args[1]);
- break;
-
- case 0x5b: // work_end_func
- workend(tc, args[0], args[1]);
- break;
-
- case 0x55: // annotate_func
- case 0x56: // reserved2_func
- case 0x57: // reserved3_func
- case 0x58: // reserved4_func
- case 0x59: // reserved5_func
- warn("Unimplemented m5 op (0x%x)\n", func);
- break;
-
- /* SE mode functions */
- case 0x60: // syscall_func
- m5Syscall(tc);
- break;
-
- case 0x61: // pagefault_func
- m5PageFault(tc);
- break;
-
- default:
- warn("Unhandled m5 op: 0x%x\n", func);
- break;
- }
-
- return 0;
-}
-
void
arm(ThreadContext *tc)
{
quiesce(ThreadContext *tc)
{
DPRINTF(PseudoInst, "PseudoInst::quiesce()\n");
- if (!FullSystem)
- panicFsOnlyPseudoInst("quiesce");
-
- if (!tc->getCpuPtr()->params()->do_quiesce)
- return;
-
- DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name());
-
- tc->suspend();
- if (tc->getKernelStats())
- tc->getKernelStats()->quiesce();
+ tc->quiesce();
}
void
quiesceSkip(ThreadContext *tc)
{
DPRINTF(PseudoInst, "PseudoInst::quiesceSkip()\n");
- if (!FullSystem)
- panicFsOnlyPseudoInst("quiesceSkip");
-
- 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();
+ tc->quiesceTick(tc->getCpuPtr()->nextCycle() + 1);
}
void
quiesceNs(ThreadContext *tc, uint64_t ns)
{
DPRINTF(PseudoInst, "PseudoInst::quiesceNs(%i)\n", ns);
- if (!FullSystem)
- panicFsOnlyPseudoInst("quiesceNs");
-
- BaseCPU *cpu = tc->getCpuPtr();
-
- if (!cpu->params()->do_quiesce)
- 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();
+ tc->quiesceTick(curTick() + SimClock::Int::ns * ns);
}
void
quiesceCycles(ThreadContext *tc, uint64_t cycles)
{
DPRINTF(PseudoInst, "PseudoInst::quiesceCycles(%i)\n", cycles);
- if (!FullSystem)
- panicFsOnlyPseudoInst("quiesceCycles");
-
- BaseCPU *cpu = tc->getCpuPtr();
-
- if (!cpu->params()->do_quiesce)
- return;
-
- EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
-
- Tick resume = cpu->clockEdge(Cycles(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();
+ tc->quiesceTick(tc->getCpuPtr()->clockEdge(Cycles(cycles)));
}
uint64_t
quiesceTime(ThreadContext *tc)
{
DPRINTF(PseudoInst, "PseudoInst::quiesceTime()\n");
- if (!FullSystem) {
- panicFsOnlyPseudoInst("quiesceTime");
- return 0;
- }
return (tc->readLastActivate() - tc->readLastSuspend()) /
SimClock::Int::ns;
{
DPRINTF(PseudoInst, "PseudoInst::wakeCPU(%i)\n", cpuid);
System *sys = tc->getSystemPtr();
+
+ if (sys->numContexts() <= cpuid) {
+ warn("PseudoInst::wakeCPU(%i), cpuid greater than number of contexts"
+ "(%i)\n",cpuid, sys->numContexts());
+ return;
+ }
+
ThreadContext *other_tc = sys->threadContexts[cpuid];
if (other_tc->status() == ThreadContext::Suspended)
other_tc->activate();
m5exit(ThreadContext *tc, Tick delay)
{
DPRINTF(PseudoInst, "PseudoInst::m5exit(%i)\n", delay);
- Tick when = curTick() + delay * SimClock::Int::ns;
- exitSimLoop("m5_exit instruction encountered", 0, when, 0, true);
+ if (DistIface::readyToExit(delay)) {
+ Tick when = curTick() + delay * SimClock::Int::ns;
+ exitSimLoop("m5_exit instruction encountered", 0, when, 0, true);
+ }
}
void
if (!to_number(address, addr))
continue;
- if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
+ if (!tc->getSystemPtr()->workload->symtab->insert(addr, symbol))
continue;
if (!FullSystem)
panicFsOnlyPseudoInst("addSymbol");
- char symb[100];
- CopyStringOut(tc, symb, symbolAddr, 100);
- std::string symbol(symb);
+ std::string symbol;
+ tc->getVirtProxy().readString(symbol, symbolAddr);
DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
- tc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
+ tc->getSystemPtr()->workload->symtab->insert(addr,symbol);
debugSymbolTable->insert(addr,symbol);
}
uint64_t
-initParam(ThreadContext *tc)
+initParam(ThreadContext *tc, uint64_t key_str1, uint64_t key_str2)
{
- DPRINTF(PseudoInst, "PseudoInst::initParam()\n");
+ DPRINTF(PseudoInst, "PseudoInst::initParam() key:%s%s\n", (char *)&key_str1,
+ (char *)&key_str2);
if (!FullSystem) {
panicFsOnlyPseudoInst("initParam");
return 0;
}
- return tc->getCpuPtr()->system->init_param;
+ // 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_str character buffer
+ const int len = 2 * sizeof(uint64_t) + 1;
+ char key_str[len];
+ memset(key_str, '\0', len);
+ if (key_str1 == 0) {
+ assert(key_str2 == 0);
+ } else {
+ strncpy(key_str, (char *)&key_str1, sizeof(uint64_t));
+ }
+
+ if (strlen(key_str) == sizeof(uint64_t)) {
+ strncpy(key_str + sizeof(uint64_t), (char *)&key_str2,
+ sizeof(uint64_t));
+ } else {
+ assert(key_str2 == 0);
+ }
+
+ // Compare the key parameter with the known values to select the return
+ // value
+ uint64_t val;
+ if (strcmp(key_str, InitParamKey::DEFAULT) == 0) {
+ val = tc->getCpuPtr()->system->init_param;
+ } else if (strcmp(key_str, InitParamKey::DIST_RANK) == 0) {
+ val = DistIface::rankParam();
+ } else if (strcmp(key_str, InitParamKey::DIST_SIZE) == 0) {
+ val = DistIface::sizeParam();
+ } else {
+ panic("Unknown key for initparam pseudo instruction:\"%s\"", key_str);
+ }
+ return val;
}
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);
+ }
}
uint64_t
}
close(fd);
- CopyIn(tc, vaddr, buf, result);
+ tc->getVirtProxy().writeBlob(vaddr, buf, result);
delete [] buf;
return result;
}
{
DPRINTF(PseudoInst, "PseudoInst::writefile(0x%x, 0x%x, 0x%x, 0x%x)\n",
vaddr, len, offset, filename_addr);
- ostream *os;
// copy out target filename
- char fn[100];
std::string filename;
- CopyStringOut(tc, fn, filename_addr, 100);
- filename = std::string(fn);
+ tc->getVirtProxy().readString(filename, filename_addr);
+ OutputStream *out;
if (offset == 0) {
// create a new file (truncate)
- os = simout.create(filename, true, true);
+ 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.)
- os = simout.openFile(simout.directory() + filename,
- ios::in | ios::out | ios::binary, true);
+ 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);
// copy out data and write to file
char *buf = new char[len];
- CopyOut(tc, buf, vaddr, len);
+ tc->getVirtProxy().readBlob(vaddr, buf, len);
os->write(buf, len);
if (os->fail() || os->bad())
panic("Error while doing writefile!\n");
- simout.close(os);
+ simout.close(out);
delete [] buf;
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.
//
workbegin(ThreadContext *tc, uint64_t workid, uint64_t threadid)
{
DPRINTF(PseudoInst, "PseudoInst::workbegin(%i, %i)\n", workid, threadid);
- tc->getCpuPtr()->workItemBegin();
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.
//
workend(ThreadContext *tc, uint64_t workid, uint64_t threadid)
{
DPRINTF(PseudoInst, "PseudoInst::workend(%i, %i)\n", workid, threadid);
- tc->getCpuPtr()->workItemEnd();
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
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