Support for POSIX clock_gettime function.

Change-Id: I004772e9005ce08d72d666a9b4073afd7b74e582
RTC: 41635
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/1053
Tested-by: Jenkins Server
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/lib/syscall_time.C b/src/lib/syscall_time.C
index d4ea6d0a7..819b605b0 100644
--- a/src/lib/syscall_time.C
+++ b/src/lib/syscall_time.C
@@ -20,8 +20,11 @@
 //  Origin: 30
 //
 //  IBM_PROLOG_END
+#include <time.h>
 #include <sys/time.h>
 #include <sys/syscall.h>
+#include <errno.h>
+#include <kernel/timemgr.H>
 
 using namespace Systemcalls;
 
@@ -29,3 +32,28 @@ void nanosleep(uint64_t sec, uint64_t nsec)
 {
     _syscall2(TIME_NANOSLEEP, (void*)sec, (void*)nsec);
 }
+
+int clock_gettime(clockid_t clk_id, timespec_t* tp)
+{
+    if (unlikely(NULL == tp)) { return -EFAULT; }
+
+    int rc = 0;
+
+    switch(clk_id)
+    {
+        case CLOCK_REALTIME: // TODO: Need a message to the FSP to get the
+                             //       real-time.
+            rc = -EINVAL;
+            break;
+
+        case CLOCK_MONOTONIC:
+            TimeManager::convertTicksToSec(getTB(), tp->tv_sec, tp->tv_nsec);
+            break;
+
+        default:
+            rc = -EINVAL;
+            break;
+    }
+
+    return rc;
+}