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+/*
+ * Copyright N) 2007 MIPS Technologies, Inc. All Rights Reserved
+ *
+ * This software is part of the M5 simulator.
+ *
+ * THIS IS A LEGAL AGREEMENT. BY DOWNLOADING, USING, COPYING, CREATING
+ * DERIVATIVE WORKS, AND/OR DISTRIBUTING THIS SOFTWARE YOU ARE AGREEING
+ * TO THESE TERMS AND CONDITIONS.
+ *
+ * Permission is granted to use, copy, create derivative works and
+ * distribute this software and such derivative works for any purpose,
+ * so long as (1) the copyright notice above, this grant of permission,
+ * and the disclaimer below appear in all copies and derivative works
+ * made, (2) the copyright notice above is augmented as appropriate to
+ * reflect the addition of any new copyrightable work in a derivative
+ * work (e.g., Copyright N) <Publication Year> Copyright Owner), and (3)
+ * the name of MIPS Technologies, Inc. ($(B!H(BMIPS$(B!I(B) is not used in any
+ * advertising or publicity pertaining to the use or distribution of
+ * this software without specific, written prior authorization.
+ *
+ * THIS SOFTWARE IS PROVIDED $(B!H(BAS IS.$(B!I(B MIPS MAKES NO WARRANTIES AND
+ * DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, STATUTORY, IMPLIED OR
+ * OTHERWISE, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
+ * NON-INFRINGEMENT OF THIRD PARTY RIGHTS, REGARDING THIS SOFTWARE.
+ * IN NO EVENT SHALL MIPS BE LIABLE FOR ANY DAMAGES, INCLUDING DIRECT,
+ * INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, OR PUNITIVE DAMAGES OF
+ * ANY KIND OR NATURE, ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT,
+ * THIS SOFTWARE AND/OR THE USE OF THIS SOFTWARE, WHETHER SUCH LIABILITY
+ * IS ASSERTED ON THE BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE OR
+ * STRICT LIABILITY), OR OTHERWISE, EVEN IF MIPS HAS BEEN WARNED OF THE
+ * POSSIBILITY OF ANY SUCH LOSS OR DAMAGE IN ADVANCE.
+ *
+ * Authors: Ali G. Saidi
+ * Nathan L. Binkert
+ */
+
+
+#ifndef __ARCH_MIPS_LINUX_LINUX_TREADNIFO_HH__
+#define __ARCH_MIPS_LINUX_LINUX_TREADNIFO_HH__
+
+#include "cpu/thread_context.hh"
+#include "sim/system.hh"
+#include "sim/vptr.hh"
+
+namespace Linux {
+
+class ThreadInfo
+{
+ private:
+ ThreadContext *tc;
+ System *sys;
+ Addr pcbb;
+
+ template <typename T>
+ bool
+ get_data(const char *symbol, T &data)
+ {
+ Addr addr = 0;
+ if (!sys->kernelSymtab->findAddress(symbol, addr))
+ return false;
+
+ CopyOut(tc, &data, addr, sizeof(T));
+
+ data = TheISA::gtoh(data);
+
+ return true;
+ }
+
+ public:
+ ThreadInfo(ThreadContext *_tc, Addr _pcbb = 0)
+ : tc(_tc), sys(tc->getSystemPtr()), pcbb(_pcbb)
+ {
+
+ }
+ ~ThreadInfo()
+ {}
+
+ inline Addr
+ curThreadInfo()
+ {
+ panic("curThreadInfo not implemented for MIPS");
+ Addr addr = pcbb;
+ Addr sp;
+
+ if (!addr)
+ addr = tc->readMiscRegNoEffect(0/*TheISA::IPR_PALtemp23*/);
+
+ FunctionalPort *p = tc->getPhysPort();
+ p->readBlob(addr, (uint8_t *)&sp, sizeof(Addr));
+
+ return sp & ~ULL(0x3fff);
+ }
+
+ inline Addr
+ curTaskInfo(Addr thread_info = 0)
+ {
+ int32_t offset;
+ if (!get_data("thread_info_task", offset))
+ return 0;
+
+ if (!thread_info)
+ thread_info = curThreadInfo();
+
+ Addr addr;
+ CopyOut(tc, &addr, thread_info + offset, sizeof(addr));
+
+ return addr;
+ }
+
+ int32_t
+ curTaskPID(Addr thread_info = 0)
+ {
+ Addr offset;
+ if (!get_data("task_struct_pid", offset))
+ return -1;
+
+ int32_t pid;
+ CopyOut(tc, &pid, curTaskInfo(thread_info) + offset, sizeof(pid));
+
+ return pid;
+ }
+
+ int64_t
+ curTaskStart(Addr thread_info = 0)
+ {
+ Addr offset;
+ if (!get_data("task_struct_start_time", offset))
+ return -1;
+
+ int64_t data;
+ // start_time is actually of type timespec, but if we just
+ // grab the first long, we'll get the seconds out of it
+ CopyOut(tc, &data, curTaskInfo(thread_info) + offset, sizeof(data));
+
+ return data;
+ }
+
+ std::string
+ curTaskName(Addr thread_info = 0)
+ {
+ int32_t offset;
+ int32_t size;
+
+ if (!get_data("task_struct_comm", offset))
+ return "FailureIn_curTaskName";
+
+ if (!get_data("task_struct_comm_size", size))
+ return "FailureIn_curTaskName";
+
+ char buffer[size + 1];
+ CopyStringOut(tc, buffer, curTaskInfo(thread_info) + offset, size);
+
+ return buffer;
+ }
+};
+
+/* namespace Linux */ }
+
+#endif // __ARCH_MIPS_LINUX_LINUX_THREADINFO_HH__