sysdeps/mach/mips/syscall.S

   1 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <sysdep.h>
  20
  21 #ifdef PIC
  22         .option pic2
  23 #endif
  24 ENTRY (syscall)
  25         move    v0, a0          /* Load system call number from first arg.  */
  26         move    a0, a1          /* Move the next three args up a register.  */
  27         move    a1, a2
  28         move    a2, a3
  29         /* Load the remaining possible args (up to 11) from the stack.  */
  30 #ifdef __mips64
  31         ld      t0,4*8(sp)
  32         ld      t1,5*8(sp)
  33         ld      t2,6*8(sp)
  34         ld      t3,7*8(sp)
  35         ld      t4,8*8(sp)
  36         ld      t5,9*8(sp)
  37         ld      t6,10*8(sp)
  38 #else
  39         lw      t0,4*4(sp)
  40         lw      t1,5*4(sp)
  41         lw      t2,6*4(sp)
  42         lw      t3,7*4(sp)
  43         lw      t4,8*4(sp)
  44         lw      t5,9*4(sp)
  45         lw      t6,10*4(sp)
  46 #endif
  47         syscall                 /* Do the system call.  */
  48         j ra                    /* Return to caller.  */