From 7cdd5316abaf91755edd9186d3836ff371902146 Mon Sep 17 00:00:00 2001
From: "Timothy M. Jones" <tjones1@inf.ed.ac.uk>
Date: Sat, 24 Oct 2009 10:53:57 -0700
Subject: [PATCH] syscall: Implementation of the time system call.

---
 src/kern/linux/linux.hh |  1 +
 src/sim/syscall_emul.hh | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/src/kern/linux/linux.hh b/src/kern/linux/linux.hh
index 2df323712..736213762 100644
--- a/src/kern/linux/linux.hh
+++ b/src/kern/linux/linux.hh
@@ -62,6 +62,7 @@ class Linux : public OperatingSystem
     typedef uint64_t size_t;
     typedef uint64_t off_t;
     typedef int64_t time_t;
+    typedef int64_t clock_t;
     typedef uint32_t uid_t;
     typedef uint32_t gid_t;
     //@}
diff --git a/src/sim/syscall_emul.hh b/src/sim/syscall_emul.hh
index ce7c7fa87..6937e35f0 100644
--- a/src/sim/syscall_emul.hh
+++ b/src/sim/syscall_emul.hh
@@ -1156,6 +1156,25 @@ timesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
     return clocks;
 }
 
+/// Target time() function.
+template <class OS>
+SyscallReturn
+timeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
+           ThreadContext *tc)
+{
+    typename OS::time_t sec, usec;
+    getElapsedTime(sec, usec);
+    sec += seconds_since_epoch;
+
+    Addr taddr = (Addr)process->getSyscallArg(tc, 0);
+    if(taddr != 0) {
+        typename OS::time_t t = sec;
+        t = htog(t);
+        TranslatingPort *p = tc->getMemPort();
+        p->writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
+    }
+    return sec;
+}
 
 
 #endif // __SIM_SYSCALL_EMUL_HH__