diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/sysdep.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/ia64/sysdep.S | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.S b/sysdeps/unix/sysv/linux/ia64/sysdep.S new file mode 100644 index 0000000000..dcf9803044 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/sysdep.S @@ -0,0 +1,84 @@ +/* Copyright (C) 1999, 2000 Hewlett-Packard Co. + Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. + + 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> +#include <features.h> + + .psr abi64 + .psr lsb + .lsb + + .global errno + .common errno,4,4 + .type errno, @object + .size errno, 4 + + .global __errno +__errno = errno + + .global _errno +_errno = errno + + .text + + .align 8 + + .global __syscall_error + .proc __syscall_error +__syscall_error: +#ifdef _LIBC_REENTRANT + alloc r35=ar.pfs, 0, 4, 0, 0 + mov r32=b0 + mov r33=r8 + mov r34=r1 + ;; + br.call.sptk.many b0 = __errno_location# +.Lret0: /* force new bundle */ + st4 [r8]=r33 + mov r1=r34 + mov b0=r32 + mov r8=-1 + mov ar.pfs=r35 +#else /* _LIBC_REENTRANT */ + /* + * Note that the gp has to be set properly for this to work. + * As long as all syscalls are in the same load unit + * (executable or shared library) as this routine, we should + * be fine. Otherwise, we would have to first load the global + * pointer register from __gp. + */ + addl r2=@ltoff(errno),gp + ;; + ld8 r2=[r2] + mov r3=r8 + mov r8=-1 + ;; + st4 [r2]=r3 +#endif /* _LIBC_REENTRANT */ + ret // ret is #define'd in syscall.h! + .endp __syscall_error + + + .global __ia64_syscall + .proc __ia64_syscall +__ia64_syscall: + break __BREAK_SYSCALL + cmp.eq p6,p0=-1,r10 +(p6) br.cond.spnt.few __syscall_error + ret + .endp __ia64_syscall |