From 3e151bdde55f608385099d761a22c2e8951448b0 Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Sun, 6 Sep 2009 01:02:02 -0700 Subject: Revert "syscall.c: Use common syscall.c for ARM" This reverts commit b1913a876059949e6c309bafade55e9425ef33fb. OABI is still a requirement. So we override the common syscall implementation specifically for arm port. Signed-off-by: Khem Raj --- libc/sysdeps/linux/arm/syscall.c | 53 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 libc/sysdeps/linux/arm/syscall.c (limited to 'libc/sysdeps/linux/arm/syscall.c') diff --git a/libc/sysdeps/linux/arm/syscall.c b/libc/sysdeps/linux/arm/syscall.c new file mode 100644 index 000000000..60fbcf89b --- /dev/null +++ b/libc/sysdeps/linux/arm/syscall.c @@ -0,0 +1,53 @@ +/* vi: set sw=4 ts=4: */ +/* syscall for arm/uClibc + * + * Copyright (C) 2002 by Erik Andersen + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include +#include +#include +#include + + +long syscall(long sysnum, long a, long b, long c, long d, long e, long f) +{ +#if !defined(__thumb__) + 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) + : "memory"); +#else + register long _r7 __asm__("r7")=(long)(sysnum); + register long _r5 __asm__("r5")=(long)(f); + register long _r4 __asm__("r4")=(long)(e); + register long _r3 __asm__("r3")=(long)(d); + register long _r2 __asm__("r2")=(long)(c); + register long _r1 __asm__("r1")=(long)(b); + register long _r0 __asm__("r0")=(long)(a); + __asm__ __volatile__( + "swi 0" + : "=r"(_r0) + : "r"(_r0), "r"(_r1), "r"(_r2), "r"(_r3), + "r"(_r4), "r"(_r5), "r"(_r7) + : "memory"); +#endif + if(_r0 >=(unsigned long) -4095) { + long err = _r0; + (*__errno_location())=(-err); + _r0=(unsigned long) -1; + } + return (long) _r0; +} -- cgit v1.2.3