1 /* Copyright (C) 1997, 1998, 2001, 2003, 2007
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <http://www.gnu.org/licenses/>. */
23 extern int __syscall_error(int err_no
);
24 extern long int syscall (long int __sysno
, ...) __THROW
;
26 /* This routine is jumped to by all the syscall handlers, to stash
27 an error number into errno. */
29 __syscall_error (int err_no
)
36 /* HPPA implements syscall() in 'C'; the assembler version would
37 typically be in syscall.S. Also note that we have INLINE_SYSCALL,
38 INTERNAL_SYSCALL, and all the generated pure assembly syscall wrappers.
39 How often the function is used is unknown. */
42 syscall (long int __sysno
, ...)
44 /* FIXME: Keep this matching INLINE_SYSCALL for hppa */
46 long int arg0
, arg1
, arg2
, arg3
, arg4
, arg5
;
50 va_start (args
, __sysno
);
51 arg0
= va_arg (args
, long int);
52 arg1
= va_arg (args
, long int);
53 arg2
= va_arg (args
, long int);
54 arg3
= va_arg (args
, long int);
55 arg4
= va_arg (args
, long int);
56 arg5
= va_arg (args
, long int);
60 register unsigned long int __res
asm("r28");
62 LOAD_ARGS_6 (arg0
, arg1
, arg2
, arg3
, arg4
, arg5
)
63 asm volatile (SAVE_ASM_PIC
64 " ble 0x100(%%sr2, %%r0) \n"
68 : "r" (__sysno
) PIC_REG_USE ASM_ARGS_6
69 : "memory", CALL_CLOB_REGS CLOB_ARGS_6
);
72 if ((unsigned long int) __sys_res
>= (unsigned long int) -4095)
74 __set_errno (-__sys_res
);