diff options
Diffstat (limited to 'libgcc/libgcov-profiler.c')
| -rw-r--r-- | libgcc/libgcov-profiler.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/libgcc/libgcov-profiler.c b/libgcc/libgcov-profiler.c index 70a821dc625..d9217b9885b 100644 --- a/libgcc/libgcov-profiler.c +++ b/libgcc/libgcov-profiler.c @@ -26,6 +26,17 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #include "libgcov.h" #if !defined(inhibit_libc) +/* Detect whether target can support atomic update of profilers. */ +#if __SIZEOF_LONG_LONG__ == 4 && __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 +#define GCOV_SUPPORTS_ATOMIC 1 +#else +#if __SIZEOF_LONG_LONG__ == 8 && __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 +#define GCOV_SUPPORTS_ATOMIC 1 +#else +#define GCOV_SUPPORTS_ATOMIC 0 +#endif +#endif + #ifdef L_gcov_interval_profiler /* If VALUE is in interval <START, START + STEPS - 1>, then increases the corresponding counter in COUNTERS. If the VALUE is above or below @@ -46,7 +57,7 @@ __gcov_interval_profiler (gcov_type *counters, gcov_type value, } #endif -#ifdef L_gcov_interval_profiler_atomic +#if defined(L_gcov_interval_profiler_atomic) && GCOV_SUPPORTS_ATOMIC /* If VALUE is in interval <START, START + STEPS - 1>, then increases the corresponding counter in COUNTERS. If the VALUE is above or below the interval, COUNTERS[STEPS] or COUNTERS[STEPS + 1] is increased @@ -80,7 +91,7 @@ __gcov_pow2_profiler (gcov_type *counters, gcov_type value) } #endif -#ifdef L_gcov_pow2_profiler_atomic +#if defined(L_gcov_pow2_profiler_atomic) && GCOV_SUPPORTS_ATOMIC /* If VALUE is a power of two, COUNTERS[1] is incremented. Otherwise COUNTERS[0] is incremented. Function is thread-safe. */ @@ -134,7 +145,7 @@ __gcov_one_value_profiler (gcov_type *counters, gcov_type value) } #endif -#ifdef L_gcov_one_value_profiler_atomic +#if defined(L_gcov_one_value_profiler_atomic) && GCOV_SUPPORTS_ATOMIC /* Update one value profilers (COUNTERS) for a given VALUE. @@ -342,6 +353,7 @@ __gcov_time_profiler (gcov_type* counters) counters[0] = ++function_counter; } +#if GCOV_SUPPORTS_ATOMIC /* Sets corresponding COUNTERS if there is no value. Function is thread-safe. */ @@ -352,6 +364,7 @@ __gcov_time_profiler_atomic (gcov_type* counters) counters[0] = __atomic_add_fetch (&function_counter, 1, MEMMODEL_RELAXED); } #endif +#endif #ifdef L_gcov_average_profiler @@ -366,7 +379,7 @@ __gcov_average_profiler (gcov_type *counters, gcov_type value) } #endif -#ifdef L_gcov_average_profiler_atomic +#if defined(L_gcov_average_profiler_atomic) && GCOV_SUPPORTS_ATOMIC /* Increase corresponding COUNTER by VALUE. FIXME: Perhaps we want to saturate up. Function is thread-safe. */ @@ -388,7 +401,7 @@ __gcov_ior_profiler (gcov_type *counters, gcov_type value) } #endif -#ifdef L_gcov_ior_profiler_atomic +#if defined(L_gcov_ior_profiler_atomic) && GCOV_SUPPORTS_ATOMIC /* Bitwise-OR VALUE into COUNTER. Function is thread-safe. */ void |