[Qemu-devel] [RFC PATCH 07/12] timer: add cpu_icount_to_ns function.

[fred . konrad]

From: KONRAD Frederic <fred.kon...@greensocs.com>

This adds cpu_icount_to_ns function which is needed for reverse execution.

It returns the time for a specific instruction.

Signed-off-by: KONRAD Frederic <fred.kon...@greensocs.com>
---
 cpus.c               | 9 +++++++--
 include/qemu/timer.h | 1 +
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/cpus.c b/cpus.c
index 825d438..007de34 100644
--- a/cpus.c
+++ b/cpus.c
@@ -146,9 +146,9 @@ static int64_t cpu_get_icount_locked(int with_bias)
     }
 
     if (with_bias) {
-        return timers_state.qemu_icount_bias + (icount << icount_time_shift);
+        return timers_state.qemu_icount_bias + cpu_icount_to_ns(icount);
     } else {
-        return icount << icount_time_shift;
+        return cpu_icount_to_ns(icount);
     }
 }
 
@@ -178,6 +178,11 @@ int64_t cpu_get_icount_wo_bias(void)
     return icount;
 }
 
+int64_t cpu_icount_to_ns(int64_t icount)
+{
+    return icount << icount_time_shift;
+}
+
 /* return the host CPU cycle counter and handle stop/restart */
 /* Caller must hold the BQL */
 int64_t cpu_get_ticks(void)
diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index da47194..0861d99 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -753,6 +753,7 @@ static inline int64_t get_clock(void)
 int64_t cpu_get_icount_wo_bias(void);
 int64_t cpu_get_icount(void);
 int64_t cpu_get_clock(void);
+int64_t cpu_icount_to_ns(int64_t icount);
 
 /*******************************************/
 /* host CPU ticks (if available) */
-- 
1.8.1.4