From 15094943050eb9a564f409323070e50b40f78816 Mon Sep 17 00:00:00 2001 From: Bobby Bingham Date: Fri, 11 Nov 2016 21:52:05 -0600 Subject: add s390x port --- arch/s390x/syscall_arch.h | 76 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 arch/s390x/syscall_arch.h (limited to 'arch/s390x/syscall_arch.h') diff --git a/arch/s390x/syscall_arch.h b/arch/s390x/syscall_arch.h new file mode 100644 index 00000000..afb99852 --- /dev/null +++ b/arch/s390x/syscall_arch.h @@ -0,0 +1,76 @@ +#define __SYSCALL_LL_E(x) (x) +#define __SYSCALL_LL_O(x) (x) + +#define __asm_syscall(ret, ...) do { \ + __asm__ __volatile__ ("svc 0\n" \ + : ret : __VA_ARGS__ : "memory"); \ + return r2; \ + } while (0) + +static inline long __syscall0(long n) +{ + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2"); + __asm_syscall("=r"(r2), "r"(r1)); +} + +static inline long __syscall1(long n, long a) +{ + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2") = a; + __asm_syscall("+r"(r2), "r"(r1)); +} + +static inline long __syscall2(long n, long a, long b) +{ + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2") = a; + register long r3 __asm__("r3") = b; + __asm_syscall("+r"(r2), "r"(r1), "r"(r3)); +} + +static inline long __syscall3(long n, long a, long b, long c) +{ + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2") = a; + register long r3 __asm__("r3") = b; + register long r4 __asm__("r4") = c; + __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4)); +} + +static inline long __syscall4(long n, long a, long b, long c, long d) +{ + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2") = a; + register long r3 __asm__("r3") = b; + register long r4 __asm__("r4") = c; + register long r5 __asm__("r5") = d; + __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4), "r"(r5)); +} + +static inline long __syscall5(long n, long a, long b, long c, long d, long e) +{ + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2") = a; + register long r3 __asm__("r3") = b; + register long r4 __asm__("r4") = c; + register long r5 __asm__("r5") = d; + register long r6 __asm__("r6") = e; + __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4), "r"(r5), "r"(r6)); +} + +static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f) +{ + if (n == SYS_mmap) return __syscall1(n, (long)(long[]){a,b,c,d,e,f}); + + register long r1 __asm__("r1") = n; + register long r2 __asm__("r2") = a; + register long r3 __asm__("r3") = b; + register long r4 __asm__("r4") = c; + register long r5 __asm__("r5") = d; + register long r6 __asm__("r6") = e; + register long r7 __asm__("r7") = f; + __asm_syscall("+r"(r2), "r"(r1), "r"(r3), "r"(r4), "r"(r5), "r"(r6), "r"(r7)); +} + +#define SYSCALL_USE_SOCKETCALL -- cgit 1.4.1