/*
+ * Copyright (c) 2012 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
* Copyright (c) 2003-2006 The Regents of The University of Michigan
* All rights reserved.
*
* 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
*/
#ifndef __SIM_PSEUDO_INST_HH__
#define __SIM_PSEUDO_INST_HH__
+#include <gem5/asm/generic/m5ops.h>
+
class ThreadContext;
-//We need the "Tick" and "Addr" data types from here
-#include "base/types.hh"
+#include "arch/pseudo_inst.hh"
+#include "arch/utility.hh"
+#include "base/types.hh" // For Tick and Addr data types.
+#include "debug/PseudoInst.hh"
+#include "sim/guest_abi.hh"
-namespace PseudoInst {
+struct PseudoInstABI
+{
+ using State = int;
+};
-/**
- * @todo these externs are only here for a hack in fullCPU::takeOver...
- */
-extern bool doStatisticsInsts;
-extern bool doCheckpointInsts;
-extern bool doQuiesce;
+namespace GuestABI
+{
+
+template <>
+struct Argument<PseudoInstABI, uint64_t>
+{
+ static uint64_t
+ get(ThreadContext *tc, PseudoInstABI::State &state)
+ {
+ uint64_t result =
+ TheISA::getArgument(tc, state, sizeof(uint64_t), false);
+ state++;
+ return result;
+ }
+};
+
+} // namespace GuestABI
+
+namespace PseudoInst
+{
-#if FULL_SYSTEM
+static inline void
+decodeAddrOffset(Addr offset, uint8_t &func)
+{
+ func = bits(offset, 15, 8);
+}
void arm(ThreadContext *tc);
void quiesce(ThreadContext *tc);
uint64_t offset, Addr filenameAddr);
void loadsymbol(ThreadContext *xc);
void addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr);
-uint64_t initParam(ThreadContext *xc);
-
-#else
-
-static inline void
-panicFsOnlyPseudoInst(const char *name)
-{
- panic("Pseudo inst \"%s\" is only available in Full System mode.");
-}
-
-static inline void
-arm(ThreadContext *tc)
-{
- panicFsOnlyPseudoInst("arm");
-}
-static inline void
-quiesce(ThreadContext *tc)
-{
- panicFsOnlyPseudoInst("quiesce");
-}
-static inline void
-quiesceSkip(ThreadContext *tc)
-{
- panicFsOnlyPseudoInst("quiesceSkip");
-}
-static inline void
-quiesceNs(ThreadContext *tc, uint64_t ns)
-{
- panicFsOnlyPseudoInst("quiesceNs");
-}
-static inline void
-quiesceCycles(ThreadContext *tc, uint64_t cycles)
-{
- panicFsOnlyPseudoInst("quiesceCycles");
-}
-static inline uint64_t
-quiesceTime(ThreadContext *tc)
-{
- panicFsOnlyPseudoInst("quiesceTime");
- return 0;
-}
-static inline uint64_t
-readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
-{
- panicFsOnlyPseudoInst("readFile");
- return 0;
-}
-static inline void
-loadsymbol(ThreadContext *xc)
-{
- panicFsOnlyPseudoInst("loadSymbol");
-}
-static inline void
-addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
-{
- panicFsOnlyPseudoInst("addSymbol");
-}
-static inline uint64_t
-initParam(ThreadContext *tc)
-{
- panicFsOnlyPseudoInst("initParam");
- return 0;
-}
-
-#endif
-
+uint64_t initParam(ThreadContext *xc, uint64_t key_str1, uint64_t key_str2);
uint64_t rpns(ThreadContext *tc);
void wakeCPU(ThreadContext *tc, uint64_t cpuid);
void m5exit(ThreadContext *tc, Tick delay);
+void m5fail(ThreadContext *tc, Tick delay, uint64_t code);
+uint64_t m5sum(ThreadContext *tc, uint64_t a, uint64_t b, uint64_t c,
+ uint64_t d, uint64_t e, uint64_t f);
void resetstats(ThreadContext *tc, Tick delay, Tick period);
void dumpstats(ThreadContext *tc, Tick delay, Tick period);
void dumpresetstats(ThreadContext *tc, Tick delay, Tick period);
void switchcpu(ThreadContext *tc);
void workbegin(ThreadContext *tc, uint64_t workid, uint64_t threadid);
void workend(ThreadContext *tc, uint64_t workid, uint64_t threadid);
+void m5Syscall(ThreadContext *tc);
+void togglesync(ThreadContext *tc);
+
+/**
+ * Execute a decoded M5 pseudo instruction
+ *
+ * The ISA-specific code is responsible to decode the pseudo inst
+ * function number and subfunction number. After that has been done,
+ * the rest of the instruction can be implemented in an ISA-agnostic
+ * manner using the ISA-specific getArguments functions.
+ *
+ * @param func M5 pseudo op major function number (see utility/m5/m5ops.h)
+ * @param result A reference to a uint64_t to store a result in.
+ * @return Whether the pseudo instruction was recognized/handled.
+ */
+
+template <typename ABI, bool store_ret>
+bool
+pseudoInstWork(ThreadContext *tc, uint8_t func, uint64_t &result)
+{
+ DPRINTF(PseudoInst, "PseudoInst::pseudoInst(%i)\n", func);
+
+ result = 0;
+
+ switch (func) {
+ case M5OP_ARM:
+ invokeSimcall<ABI>(tc, arm);
+ return true;
+
+ case M5OP_QUIESCE:
+ invokeSimcall<ABI>(tc, quiesce);
+ return true;
+
+ case M5OP_QUIESCE_NS:
+ invokeSimcall<ABI>(tc, quiesceNs);
+ return true;
+
+ case M5OP_QUIESCE_CYCLE:
+ invokeSimcall<ABI>(tc, quiesceCycles);
+ return true;
+
+ case M5OP_QUIESCE_TIME:
+ result = invokeSimcall<ABI, store_ret>(tc, quiesceTime);
+ return true;
+
+ case M5OP_RPNS:
+ result = invokeSimcall<ABI, store_ret>(tc, rpns);
+ return true;
+
+ case M5OP_WAKE_CPU:
+ invokeSimcall<ABI>(tc, wakeCPU);
+ return true;
+
+ case M5OP_EXIT:
+ invokeSimcall<ABI>(tc, m5exit);
+ return true;
+
+ case M5OP_FAIL:
+ invokeSimcall<ABI>(tc, m5fail);
+ return true;
+
+ // M5OP_SUM is for sanity checking the gem5 op interface.
+ case M5OP_SUM:
+ result = invokeSimcall<ABI, store_ret>(tc, m5sum);
+ return true;
+
+ case M5OP_INIT_PARAM:
+ result = invokeSimcall<ABI, store_ret>(tc, initParam);
+ return true;
+
+ case M5OP_LOAD_SYMBOL:
+ invokeSimcall<ABI>(tc, loadsymbol);
+ return true;
+
+ case M5OP_RESET_STATS:
+ invokeSimcall<ABI>(tc, resetstats);
+ return true;
+
+ case M5OP_DUMP_STATS:
+ invokeSimcall<ABI>(tc, dumpstats);
+ return true;
+
+ case M5OP_DUMP_RESET_STATS:
+ invokeSimcall<ABI>(tc, dumpresetstats);
+ return true;
+
+ case M5OP_CHECKPOINT:
+ invokeSimcall<ABI>(tc, m5checkpoint);
+ return true;
+
+ case M5OP_WRITE_FILE:
+ result = invokeSimcall<ABI, store_ret>(tc, writefile);
+ return true;
+
+ case M5OP_READ_FILE:
+ result = invokeSimcall<ABI, store_ret>(tc, readfile);
+ return true;
+
+ case M5OP_DEBUG_BREAK:
+ invokeSimcall<ABI>(tc, debugbreak);
+ return true;
+
+ case M5OP_SWITCH_CPU:
+ invokeSimcall<ABI>(tc, switchcpu);
+ return true;
+
+ case M5OP_ADD_SYMBOL:
+ invokeSimcall<ABI>(tc, addsymbol);
+ return true;
+
+ case M5OP_PANIC:
+ panic("M5 panic instruction called at %s\n", tc->pcState());
+
+ case M5OP_WORK_BEGIN:
+ invokeSimcall<ABI>(tc, workbegin);
+ return true;
+
+ case M5OP_WORK_END:
+ invokeSimcall<ABI>(tc, workend);
+ return true;
+
+ case M5OP_RESERVED1:
+ case M5OP_RESERVED2:
+ case M5OP_RESERVED3:
+ case M5OP_RESERVED4:
+ case M5OP_RESERVED5:
+ warn("Unimplemented m5 op (%#x)\n", func);
+ return false;
+
+ /* SE mode functions */
+ case M5OP_SE_SYSCALL:
+ invokeSimcall<ABI>(tc, m5Syscall);
+ return true;
+
+ case M5OP_SE_PAGE_FAULT:
+ invokeSimcall<ABI>(tc, TheISA::m5PageFault);
+ return true;
+
+ /* dist-gem5 functions */
+ case M5OP_DIST_TOGGLE_SYNC:
+ invokeSimcall<ABI>(tc, togglesync);
+ return true;
+
+ default:
+ warn("Unhandled m5 op: %#x\n", func);
+ return false;
+ }
+}
+
+template <typename ABI, bool store_ret=false>
+bool
+pseudoInst(ThreadContext *tc, uint8_t func, uint64_t &result)
+{
+ return pseudoInstWork<ABI, store_ret>(tc, func, result);
+}
+
+template <typename ABI, bool store_ret=true>
+bool
+pseudoInst(ThreadContext *tc, uint8_t func)
+{
+ uint64_t result;
+ return pseudoInstWork<ABI, store_ret>(tc, func, result);
+}
} // namespace PseudoInst
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