From 208eb584efbf995e0c5d92f76d5f4c08ae0054b4 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 8 Sep 2012 22:43:14 -0400 Subject: syscall organization overhaul now public syscall.h only exposes __NR_* and SYS_* constants and the variadic syscall function. no macros or inline functions, no __syscall_ret or other internal details, no 16-/32-bit legacy syscall renaming, etc. this logic has all been moved to src/internal/syscall.h with the arch-specific parts in arch/$(ARCH)/syscall_arch.h, and the amount of arch-specific stuff has been reduced to a minimum. changes still need to be reviewed/double-checked. minimal testing on i386 and mips has already been performed. --- arch/i386/syscall_arch.h | 136 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 arch/i386/syscall_arch.h (limited to 'arch/i386/syscall_arch.h') diff --git a/arch/i386/syscall_arch.h b/arch/i386/syscall_arch.h new file mode 100644 index 00000000..dc9ad147 --- /dev/null +++ b/arch/i386/syscall_arch.h @@ -0,0 +1,136 @@ +#define __SYSCALL_LL_E(x) \ +((union { long long ll; long l[2]; }){ .ll = x }).l[0], \ +((union { long long ll; long l[2]; }){ .ll = x }).l[1] +#define __SYSCALL_LL_O(x) __SYSCALL_LL_E((x)) + +#define __SYSCALL_SSLEN 8 + +static inline long __syscall0(long n) +{ + unsigned long __ret; + __asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n) : "memory"); + return __ret; +} + +#ifndef __PIC__ + +static inline long __syscall1(long n, long a1) +{ + unsigned long __ret; + __asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1) : "memory"); + return __ret; +} + +static inline long __syscall2(long n, long a1, long a2) +{ + unsigned long __ret; + __asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2) : "memory"); + return __ret; +} + +static inline long __syscall3(long n, long a1, long a2, long a3) +{ + unsigned long __ret; + __asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3) : "memory"); + return __ret; +} + +static inline long __syscall4(long n, long a1, long a2, long a3, long a4) +{ + unsigned long __ret; + __asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory"); + return __ret; +} + +static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5) +{ + unsigned long __ret; + __asm__ __volatile__ ("int $128" : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory"); + return __ret; +} + +static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6) +{ + unsigned long __ret; + __asm__ __volatile__ ("pushl %7 ; pushl %%ebp ; mov 4(%%esp),%%ebp ; int $128 ; popl %%ebp ; popl %%ecx" + : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5), "g"(a6) : "memory"); + return __ret; +} + +#else + +static inline long __syscall1(long n, long a1) +{ + unsigned long __ret; + __asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx" + : "=a"(__ret) : "a"(n), "d"(a1) : "memory"); + return __ret; +} + +static inline long __syscall2(long n, long a1, long a2) +{ + unsigned long __ret; + __asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx" + : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2) : "memory"); + return __ret; +} + +static inline long __syscall3(long n, long a1, long a2, long a3) +{ + unsigned long __ret; + __asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx" + : "=a"(__ret) : "a"(n), "S"(a1), "c"(a2), "d"(a3) : "memory"); + return __ret; +} + +static inline long __syscall4(long n, long a1, long a2, long a3, long a4) +{ + unsigned long __ret; + __asm__ __volatile__ ("xchg %2,%%ebx ; int $128 ; xchg %2,%%ebx" + : "=a"(__ret) : "a"(n), "D"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory"); + return __ret; +} + +#if 0 +static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5) +{ + unsigned long __ret; + __asm__ __volatile__ ("pushl %2 ; pushl %%ebx ; mov 4(%%esp),%%ebx ; int $128 ; popl %%ebx ; popl %%ecx" + : "=a"(__ret) : "a"(n), "g"(a1), "c"(a2), "d"(a3), "S"(a4), "D"(a5) : "memory"); + return __ret; +} +#else +static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5) +{ + return (__syscall)(n, a1, a2, a3, a4, a5); +} +#endif + +static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6) +{ + return (__syscall)(n, a1, a2, a3, a4, a5, a6); +} + +#endif + + +#define __SC_socket 1 +#define __SC_bind 2 +#define __SC_connect 3 +#define __SC_listen 4 +#define __SC_accept 5 +#define __SC_getsockname 6 +#define __SC_getpeername 7 +#define __SC_socketpair 8 +#define __SC_send 9 +#define __SC_recv 10 +#define __SC_sendto 11 +#define __SC_recvfrom 12 +#define __SC_shutdown 13 +#define __SC_setsockopt 14 +#define __SC_getsockopt 15 +#define __SC_sendmsg 16 +#define __SC_recvmsg 17 +#define __SC_accept4 18 +#define __SC_recvmmsg 19 +#define __SC_sendmmsg 20 -- cgit v1.2.1