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authorTobias Anderberg <tobias.anderberg@axis.com>2002-09-20 15:17:16 +0000
committerTobias Anderberg <tobias.anderberg@axis.com>2002-09-20 15:17:16 +0000
commitcb9136d9843e3756ebc79f91a3a522ed4ca73eda (patch)
tree32c4645d05a7b4d7ec5b56abeb6f837c574e3af8 /libc/sysdeps/linux/cris/sysdep.S
parent750c0194b0b645120ddccf25b82848b06be6cdc2 (diff)
* Added clone() system call.
* Proper implementation of bits/syscalls.h, no cheating by just including <asm/unistd.h>. * 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.
Diffstat (limited to 'libc/sysdeps/linux/cris/sysdep.S')
-rw-r--r--libc/sysdeps/linux/cris/sysdep.S77
1 files changed, 77 insertions, 0 deletions
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 <sysdep.h>
+
+/* 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)