diff options
Diffstat (limited to 'libc/sysdeps')
| -rw-r--r-- | libc/sysdeps/linux/arm/Makefile | 2 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/syscall.c | 49 |
2 files changed, 50 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/arm/Makefile b/libc/sysdeps/linux/arm/Makefile index c5a96dea8..950cf660e 100644 --- a/libc/sysdeps/linux/arm/Makefile +++ b/libc/sysdeps/linux/arm/Makefile @@ -33,7 +33,7 @@ CRT0_OBJ=crt0.o SSRC=__longjmp.S vfork.S clone.S setjmp.S bsd-setjmp.S bsd-_setjmp.S SOBJS=$(patsubst %.S,%.o, $(SSRC)) -CSRC=inout_bwl.c brk.c +CSRC=inout_bwl.c brk.c syscall.c COBJS=$(patsubst %.c,%.o, $(CSRC)) OBJS=$(SOBJS) $(MOBJ) $(COBJS) diff --git a/libc/sysdeps/linux/arm/syscall.c b/libc/sysdeps/linux/arm/syscall.c new file mode 100644 index 000000000..92a535e23 --- /dev/null +++ b/libc/sysdeps/linux/arm/syscall.c @@ -0,0 +1,49 @@ +/* vi: set sw=4 ts=4: */ +/* syscall for arm/uClibc + * + * Copyright (C) 2002 by Erik Andersen <andersen@uclibc.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU Library General Public License as published by + * the Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License + * for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <features.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/syscall.h> + + +long syscall(long sysnum, long a, long b, long c, long d, long e, long f) +{ + register long _r0 asm("r0")=(long)(sysnum); + register long _r6 asm("r6")=(long)(f); + register long _r5 asm("r5")=(long)(e); + register long _r4 asm("r4")=(long)(d); + register long _r3 asm("r3")=(long)(c); + register long _r2 asm("r2")=(long)(b); + register long _r1 asm("r1")=(long)(a); + asm volatile( + "swi %1" + : "=r"(_r0) + : "i"(__NR_syscall), "r"(_r0), "r"(_r1), + "r"(_r2), "r"(_r3), "r"(_r4), "r"(_r5), + "r"(_r6) + : "r0", "memory"); + if(_r0 >=(unsigned long) -4095) { + (*__errno_location())=(-_r0); + _r0=(unsigned long) -1; + } + return (long) _r0; +} + |