diff options
Diffstat (limited to 'winsup/testsuite/winsup.api/pthread/cpu_relax.h')
| -rw-r--r-- | winsup/testsuite/winsup.api/pthread/cpu_relax.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/pthread/cpu_relax.h b/winsup/testsuite/winsup.api/pthread/cpu_relax.h new file mode 100644 index 0000000..c31ef8c --- /dev/null +++ b/winsup/testsuite/winsup.api/pthread/cpu_relax.h @@ -0,0 +1,13 @@ +#ifndef CPU_RELAX_H +#define CPU_RELAX_H + +#if defined(__x86_64__) || defined(__i386__) // Check for x86 architectures + #define CPU_RELAX() __asm__ volatile ("pause" :::) +#elif defined(__aarch64__) || defined(__arm__) // Check for ARM architectures + #define CPU_RELAX() __asm__ volatile ("dmb ishst\n" \ + "yield" :::) +#else + #error unimplemented for this target +#endif + +#endif |