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| author | David Schleef <ds@schleef.org> | 2010-07-06 12:27:42 -0700 |
|---|---|---|
| committer | David Schleef <ds@schleef.org> | 2010-07-09 18:22:11 -0700 |
| commit | 3c66562a3447fa2224a09bdca9f60d98dff18a4d (patch) | |
| tree | f2eb709ce87f19eeeb92373d13b085537bcf77c1 | |
| parent | c32ded6d60f1b3162db3a7c67d51e6256a24661b (diff) | |
| download | orc-neon.tar.gz | |
arm/neon: timestamp counter (not for master)neon
Add timestamp counter for Cortex-A8. Requires a
kernel patch to use.
| -rw-r--r-- | orc-test/orcprofile.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/orc-test/orcprofile.c b/orc-test/orcprofile.c index 48e0c3e..5d97a0b 100644 --- a/orc-test/orcprofile.c +++ b/orc-test/orcprofile.c @@ -56,6 +56,19 @@ void orc_profile_init (OrcProfile *prof) { +#if defined(__GNUC__) && (defined(HAVE_ARM)) + unsigned int flags; + unsigned int count; + + __asm__ volatile ("mrc p15, 0, %0, c9, c12, 0" : "=r" (flags)); + flags |= 1; + __asm__ volatile ("mcr p15, 0, %0, c9, c12, 0" :: "r" (flags)); + + __asm__ volatile ("mcr p15, 0, %0, c9, c12, 2" :: "r"(1<<31)); + __asm__ __volatile__(" mcr p15, 0, %0, c9, c13, 0" :: "r" (0)); + + __asm__ volatile ("mcr p15, 0, %0, c9, c12, 1" :: "r"(1<<31)); +#endif memset(prof, 0, sizeof(OrcProfile)); prof->min = -1; @@ -156,6 +169,11 @@ oil_profile_stamp_default (void) unsigned long ts; __asm__ __volatile__("rdtsc\n" : "=a" (ts) : : "edx"); return ts; +#elif defined(__GNUC__) && defined(HAVE_ARM) + unsigned int ts; + //__asm__ __volatile__(" mrc p14, 0, %0, c1, c0, 0 \n" : "=r" (ts)); + __asm__ __volatile__(" mrc p15, 0, %0, c9, c13, 0 \n" : "=r" (ts)); + return ts; #elif defined(_MSC_VER) && defined(HAVE_I386) unsigned long ts; __asm push edx |