xnu-7195.50.7.100.1.tar.gz

[apple/xnu.git] / libsyscall / wrappers / mach_continuous_time.c

diff --git a/libsyscall/wrappers/mach_continuous_time.c b/libsyscall/wrappers/mach_continuous_time.c
index c128ac1b7fd4bf134edd1f9ffaf4d0d068d54c8b..e07aba3bf8cb174445f54cc4868bc858e2b36ce0 100644 (file)
--- a/libsyscall/wrappers/mach_continuous_time.c
+++ b/libsyscall/wrappers/mach_continuous_time.c
@@ -62,8 +62,9 @@ _mach_continuous_hwclock(uint64_t *cont_time __unused)
 #define ISB_SY          0xf
        uint8_t cont_hwclock = *((uint8_t*)_COMM_PAGE_CONT_HWCLOCK);
        if (cont_hwclock) {
+               volatile uint64_t *base_ptr = (volatile uint64_t*)_COMM_PAGE_CONT_HW_TIMEBASE;
                __builtin_arm_isb(ISB_SY);
-               *cont_time = __builtin_arm_rsr64("CNTPCT_EL0");
+               *cont_time = __builtin_arm_rsr64("CNTVCT_EL0") + *base_ptr;
                return KERN_SUCCESS;
        }
 #endif