diff options
Diffstat (limited to 'vdso/syscalls.h')
| -rw-r--r-- | vdso/syscalls.h | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/vdso/syscalls.h b/vdso/syscalls.h index f5865bb72..0c6a922a0 100644 --- a/vdso/syscalls.h +++ b/vdso/syscalls.h @@ -26,6 +26,9 @@ #include <stddef.h> #include <sys/types.h> +#define __stringify_1(x...) #x +#define __stringify(x...) __stringify_1(x) + namespace vdso { #if __x86_64__ @@ -51,22 +54,15 @@ static inline int sys_getcpu(unsigned* cpu, unsigned* node, return num; } -#elif __aarch64__ - -static inline int sys_rt_sigreturn(void) { - int num = __NR_rt_sigreturn; - - asm volatile( - "mov x8, %0\n" - "svc #0 \n" - : "+r"(num) - : - :); - return num; +static inline void sys_rt_sigreturn(void) { + asm volatile("movl $" __stringify(__NR_rt_sigreturn)", %eax \n" + "syscall \n"); } -static inline int sys_clock_gettime(clockid_t _clkid, struct timespec *_ts) { - register struct timespec *ts asm("x1") = _ts; +#elif __aarch64__ + +static inline int sys_clock_gettime(clockid_t _clkid, struct timespec* _ts) { + register struct timespec* ts asm("x1") = _ts; register clockid_t clkid asm("x0") = _clkid; register long ret asm("x0"); register long nr asm("x8") = __NR_clock_gettime; @@ -78,8 +74,8 @@ static inline int sys_clock_gettime(clockid_t _clkid, struct timespec *_ts) { return ret; } -static inline int sys_clock_getres(clockid_t _clkid, struct timespec *_ts) { - register struct timespec *ts asm("x1") = _ts; +static inline int sys_clock_getres(clockid_t _clkid, struct timespec* _ts) { + register struct timespec* ts asm("x1") = _ts; register clockid_t clkid asm("x0") = _clkid; register long ret asm("x0"); register long nr asm("x8") = __NR_clock_getres; @@ -91,6 +87,11 @@ static inline int sys_clock_getres(clockid_t _clkid, struct timespec *_ts) { return ret; } +static inline void sys_rt_sigreturn(void) { + asm volatile("mov x8, #" __stringify(__NR_rt_sigreturn)" \n" + "svc #0 \n"); +} + #else #error "unsupported architecture" #endif |