diff options
| -rw-r--r-- | arch/arm/syscall_arch.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/syscall_arch.h b/arch/arm/syscall_arch.h index 48b0e36b..14ca8525 100644 --- a/arch/arm/syscall_arch.h +++ b/arch/arm/syscall_arch.h @@ -5,6 +5,57 @@ #define __SYSCALL_SSLEN 8 +#ifndef __clang__ + +#define __asm_syscall(...) do { \ + __asm__ __volatile__ ( "svc 0" \ + : "=r"(r0) : __VA_ARGS__ : "memory"); \ + return r0; \ + } while (0) + +static inline long __syscall0(long n) +{ + register long r7 __asm__("r7") = n; + register long r0 __asm__("r0"); + __asm_syscall("r"(r7)); +} + +static inline long __syscall1(long n, long a) +{ + register long r7 __asm__("r7") = n; + register long r0 __asm__("r0") = a; + __asm_syscall("r"(r7), "r"(r0)); +} + +static inline long __syscall2(long n, long a, long b) +{ + register long r7 __asm__("r7") = n; + register long r0 __asm__("r0") = a; + register long r1 __asm__("r1") = b; + __asm_syscall("r"(r7), "r"(r0), "r"(r1)); +} + +static inline long __syscall3(long n, long a, long b, long c) +{ + register long r7 __asm__("r7") = n; + register long r0 __asm__("r0") = a; + register long r1 __asm__("r1") = b; + register long r2 __asm__("r2") = c; + __asm_syscall("r"(r7), "r"(r0), "r"(r1), "r"(r2)); +} + +static inline long __syscall4(long n, long a, long b, long c, long d) +{ + register long r7 __asm__("r7") = n; + register long r0 __asm__("r0") = a; + register long r1 __asm__("r1") = b; + register long r2 __asm__("r2") = c; + register long r3 __asm__("r3") = d; + __asm_syscall("r"(r7), "r"(r0), "r"(r1), "r"(r2), "r"(r3)); +} + +#else + static inline long __syscall0(long n) { return (__syscall)(n); @@ -30,6 +81,8 @@ static inline long __syscall4(long n, long a, long b, long c, long d) return (__syscall)(n, a, b, c, d); } +#endif + static inline long __syscall5(long n, long a, long b, long c, long d, long e) { return (__syscall)(n, a, b, c, d, e); |