[Qemu-devel] [PULL 04/11] timer: add cpu_icount_to_ns function.

[Paolo Bonzini]

From: KONRAD Frederic <address@hidden>

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 <address@hidden>
Reviewed-by: Paolo Bonzini <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
 cpus.c               | 7 ++++++-
 include/qemu/timer.h | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/cpus.c b/cpus.c
index a6b6557..62636a6 100644
--- a/cpus.c
+++ b/cpus.c
@@ -146,7 +146,7 @@ static int64_t cpu_get_icount_locked(void)
         }
         icount -= (cpu->icount_decr.u16.low + cpu->icount_extra);
     }
-    return timers_state.qemu_icount_bias + (icount << icount_time_shift);
+    return timers_state.qemu_icount_bias + cpu_icount_to_ns(icount);
 }
 
 int64_t cpu_get_icount(void)
@@ -162,6 +162,11 @@ int64_t cpu_get_icount(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 7f9a074..e12c714 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -745,6 +745,7 @@ static inline int64_t get_clock(void)
 /* icount */
 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) */
-- 
1.9.3