/* Copyright (C) 1997-2018 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 Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library.  If not, see

   <http://www.gnu.org/licenses/>.  */

#include <stdarg.h>

#include <sysdep.h>

#include <errno.h>

/* HPPA implements syscall() in 'C'; the assembler version would

   typically be in syscall.S. Also note that we have INLINE_SYSCALL,

   INTERNAL_SYSCALL, and all the generated pure assembly syscall wrappers.

   How often the function is used is unknown. */

long int

syscall (long int __sysno, ...)

{

  /* FIXME: Keep this matching INLINE_SYSCALL for hppa */

  va_list args;

  long int arg0, arg1, arg2, arg3, arg4, arg5;

  long int __sys_res;

  /* Load varargs */

  va_start (args, __sysno);

  arg0 = va_arg (args, long int);

  arg1 = va_arg (args, long int);

  arg2 = va_arg (args, long int);

  arg3 = va_arg (args, long int);

  arg4 = va_arg (args, long int);

  arg5 = va_arg (args, long int);

  va_end (args);

  {

    LOAD_ARGS_6 (arg0, arg1, arg2, arg3, arg4, arg5)

    register unsigned long int __res asm("r28");

    PIC_REG_DEF

    LOAD_REGS_6

    asm volatile (SAVE_ASM_PIC

		  "	ble  0x100(%%sr2, %%r0)	\n"

		  "	copy %1, %%r20		\n"

		  LOAD_ASM_PIC

		  : "=r" (__res)

		  : "r" (__sysno) PIC_REG_USE ASM_ARGS_6

		  : "memory", CALL_CLOB_REGS CLOB_ARGS_6);

    __sys_res = __res;

  }

  if ((unsigned long int) __sys_res >= (unsigned long int) -4095)

    {

      __set_errno (-__sys_res);

      __sys_res = -1;

    }

  return __sys_res;

}