clock_gettime support for HBRT

Change-Id: Iab8d113c00609d7b92fb2fd943b57c9a21671f11
RTC: 119002
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/14668
Tested-by: Jenkins Server
Reviewed-by: STEPHEN M. CPREK <smcprek@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

2 files changed, 23 insertions, 1 deletions

diff --git a/src/include/runtime/interface.h b/src/include/runtime/interface.h
index 69696cfc0..52717fbc3 100644
--- a/src/include/runtime/interface.h
+++ b/src/include/runtime/interface.h
@@ -40,7 +40,7 @@
 #ifndef __HOSTBOOT_RUNTIME_INTERFACE_VERSION_ONLY
 
 #include <stdint.h>
-
+#include <time.h>
 /** @typedef hostInterfaces_t
  *  @brief Interfaces provided by the underlying environment (ex. Sapphire).
  *
@@ -142,6 +142,19 @@ typedef struct hostInterfaces
      */
     void (*report_failure)( uint64_t i_status, uint64_t i_partId );
 
+    /**
+     *  @brief Reads the clock value from a POSIX clock.
+     *  @param[in]  i_clkId - The clock ID to read.
+     *  @param[out] o_tp - The timespec struct to store the clock value in.
+     *
+     *  @return 0 or -(errno).
+     *  @retval 0 - SUCCESS.
+     *  @retval -EINVAL - Invalid clock requested.
+     *  @retval -EFAULT - NULL ptr given for timespec struct.
+     *
+     */
+    int (*clock_gettime)(clockid_t i_clkId, timespec_t* o_tp);
+
     // Reserve some space for future growth.
     void (*reserved[32])(void);
 
diff --git a/src/runtime/rt_time.C b/src/runtime/rt_time.C
index a5d00157e..e222a3718 100644
--- a/src/runtime/rt_time.C
+++ b/src/runtime/rt_time.C
@@ -33,3 +33,12 @@ void nanosleep(uint64_t sec, uint64_t nsec)
     }
 }
 
+int clock_gettime(clockid_t i_clkId, timespec_t* o_tp)
+{
+    int l_rc = -1;
+    if (g_hostInterfaces && g_hostInterfaces->clock_gettime)
+    {
+        l_rc = g_hostInterfaces->clock_gettime(i_clkId, o_tp);
+    }
+    return l_rc;
+}