| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* syscall for arm/uClibc |
| 3 | * |
| 4 | * Copyright (C) 2002 by Erik Andersen <andersen@uclibc.org> |
| 5 | * |
| 6 | * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| 7 | */ |
| 8 | |
| 9 | #include <features.h> |
| 10 | #include <errno.h> |
| 11 | #include <sys/types.h> |
| 12 | #include <sys/syscall.h> |
| 13 | |
| 14 | |
| 15 | long syscall(long sysnum, long a, long b, long c, long d, long e, long f) |
| 16 | { |
| 17 | #if !defined(__thumb__) |
| 18 | register long _r0 __asm__("r0")=(long)(sysnum); |
| 19 | register long _r6 __asm__("r6")=(long)(f); |
| 20 | register long _r5 __asm__("r5")=(long)(e); |
| 21 | register long _r4 __asm__("r4")=(long)(d); |
| 22 | register long _r3 __asm__("r3")=(long)(c); |
| 23 | register long _r2 __asm__("r2")=(long)(b); |
| 24 | register long _r1 __asm__("r1")=(long)(a); |
| 25 | __asm__ __volatile__( |
| 26 | "swi %1" |
| 27 | : "=r"(_r0) |
| 28 | : "i"(__NR_syscall), "r"(_r0), "r"(_r1), |
| 29 | "r"(_r2), "r"(_r3), "r"(_r4), "r"(_r5), |
| 30 | "r"(_r6) |
| 31 | : "memory"); |
| 32 | #else |
| 33 | register long _r7 __asm__("r7")=(long)(sysnum); |
| 34 | register long _r5 __asm__("r5")=(long)(f); |
| 35 | register long _r4 __asm__("r4")=(long)(e); |
| 36 | register long _r3 __asm__("r3")=(long)(d); |
| 37 | register long _r2 __asm__("r2")=(long)(c); |
| 38 | register long _r1 __asm__("r1")=(long)(b); |
| 39 | register long _r0 __asm__("r0")=(long)(a); |
| 40 | __asm__ __volatile__( |
| 41 | "swi 0" |
| 42 | : "=r"(_r0) |
| 43 | : "r"(_r0), "r"(_r1), "r"(_r2), "r"(_r3), |
| 44 | "r"(_r4), "r"(_r5), "r"(_r7) |
| 45 | : "memory"); |
| 46 | #endif |
| 47 | if(_r0 >=(unsigned long) -4095) { |
| 48 | long err = _r0; |
| 49 | (*__errno_location())=(-err); |
| 50 | _r0=(unsigned long) -1; |
| 51 | } |
| 52 | return (long) _r0; |
| 53 | } |