| __vdso_gettc.c (302408) | __vdso_gettc.c (305866) |
|---|---|
| 1/*- 2 * Copyright (c) 2015 The FreeBSD Foundation 3 * 4 * This software was developed by Konstantin Belousov 5 * under sponsorship from the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 13 unchanged lines hidden (view full) --- 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2015 The FreeBSD Foundation 3 * 4 * This software was developed by Konstantin Belousov 5 * under sponsorship from the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 13 unchanged lines hidden (view full) --- 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> |
| 30__FBSDID("$FreeBSD: stable/11/lib/libc/aarch64/sys/__vdso_gettc.c 291937 2015-12-07 12:20:26Z kib $"); | 30__FBSDID("$FreeBSD: stable/11/lib/libc/aarch64/sys/__vdso_gettc.c 305866 2016-09-16 10:04:28Z kib $"); |
| 31 32#include <sys/types.h> 33#include <sys/elf.h> 34#include <sys/time.h> 35#include <sys/vdso.h> 36#include <machine/cpufunc.h> | 31 32#include <sys/types.h> 33#include <sys/elf.h> 34#include <sys/time.h> 35#include <sys/vdso.h> 36#include <machine/cpufunc.h> |
| 37#include <errno.h> |
|
| 37#include "libc_private.h" 38 39static inline uint64_t 40cp15_cntvct_get(void) 41{ 42 uint64_t reg; 43 44 __asm __volatile("mrs %0, cntvct_el0" : "=r" (reg)); --- 5 unchanged lines hidden (view full) --- 50{ 51 uint64_t reg; 52 53 __asm __volatile("mrs %0, cntpct_el0" : "=r" (reg)); 54 return (reg); 55} 56 57#pragma weak __vdso_gettc | 38#include "libc_private.h" 39 40static inline uint64_t 41cp15_cntvct_get(void) 42{ 43 uint64_t reg; 44 45 __asm __volatile("mrs %0, cntvct_el0" : "=r" (reg)); --- 5 unchanged lines hidden (view full) --- 51{ 52 uint64_t reg; 53 54 __asm __volatile("mrs %0, cntpct_el0" : "=r" (reg)); 55 return (reg); 56} 57 58#pragma weak __vdso_gettc |
| 58u_int 59__vdso_gettc(const struct vdso_timehands *th) | 59int 60__vdso_gettc(const struct vdso_timehands *th, u_int *tc) |
| 60{ | 61{ |
| 61 uint64_t val; | |
| 62 | 62 |
| 63 if (th->th_algo != VDSO_TH_ALGO_ARM_GENTIM) 64 return (ENOSYS); |
|
| 63 __asm __volatile("isb" : : : "memory"); | 65 __asm __volatile("isb" : : : "memory"); |
| 64 val = th->th_physical == 0 ? cp15_cntvct_get() : cp15_cntpct_get(); 65 return (val); | 66 *tc = th->th_physical == 0 ? cp15_cntvct_get() : cp15_cntpct_get(); 67 return (0); |
| 66} 67 68#pragma weak __vdso_gettimekeep 69int 70__vdso_gettimekeep(struct vdso_timekeep **tk) 71{ 72 73 return (_elf_aux_info(AT_TIMEKEEP, tk, sizeof(*tk))); 74} | 68} 69 70#pragma weak __vdso_gettimekeep 71int 72__vdso_gettimekeep(struct vdso_timekeep **tk) 73{ 74 75 return (_elf_aux_info(AT_TIMEKEEP, tk, sizeof(*tk))); 76} |