From cb9136d9843e3756ebc79f91a3a522ed4ca73eda Mon Sep 17 00:00:00 2001 From: Tobias Anderberg Date: Fri, 20 Sep 2002 15:17:16 +0000 Subject: * Added clone() system call. * Proper implementation of bits/syscalls.h, no cheating by just including . * Proper implementation of syscall.S, it no longer contains the __syscall_error, instead it contains code which makes syscall(nr,...) a system call. * Added sysdep.S which contains the code for __syscall_error. * Added some macros to sysdep.h. * Added sys/procfs.h, which is needed when compiling with thread support. * Removed unused syscall-cris.c. --- libc/sysdeps/linux/cris/sysdep.S | 77 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 libc/sysdeps/linux/cris/sysdep.S (limited to 'libc/sysdeps/linux/cris/sysdep.S') diff --git a/libc/sysdeps/linux/cris/sysdep.S b/libc/sysdeps/linux/cris/sysdep.S new file mode 100644 index 000000000..f027119dc --- /dev/null +++ b/libc/sysdeps/linux/cris/sysdep.S @@ -0,0 +1,77 @@ +/* Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library 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. + + The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include + +/* Make space for the errno variable. */ + + .globl C_SYMBOL_NAME(errno) + .type C_SYMBOL_NAME(errno),@object + .lcomm C_SYMBOL_NAME(errno),4 + + errno = _errno + + /* weak_alias (errno, _errno) */ + + +/* The syscall stubs jump here when they detect an error, bot for PIC and + non-PIC. */ + + .syntax no_register_prefix + +ENTRY (__syscall_error) + neg.d r10,r10 + +#ifdef _LIBC_REENTRANT + push r10 + push srp + + /* Note that __syscall_error is only visible within this library, + and no-one passes it on as a pointer, so can assume that R0 (GOT + pointer) is correctly set up. */ + PLTCALL (__errno_location) + + pop srp + pop r11 + move.d r11,[r10] + +#else /* not _LIBC_REENTRANT */ +# ifdef __PIC__ + move.d [r0+C_SYMBOL_NAME(errno:GOT)],r9 + move.d r10,[r9] +# else + move.d r10,[C_SYMBOL_NAME(errno)] +# endif +#endif /* _LIBC_REENTRANT */ + +#ifdef __PIC__ +/* PIC callers are supposed to have R0 on stack, ready for us to restore. + Callers are only allowed from within this DSO, so the GOT in r0 is the + one we want to use. + + (Don't use "ret" - it's a macro). */ + + moveq -1,r10 + Ret + pop r0 +#else + Ret + moveq -1,r10 +#endif + +END (__syscall_error) -- cgit v1.2.3