ports/sysdeps/unix/mips/mips32/sysdep.h

   1 /* Copyright (C) 1992, 1995, 1997, 1999, 2000, 2002, 2003
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Brendan Kehoe (brendan@zen.org).
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <sysdeps/unix/mips/sysdep.h>
  21
  22 /* Note that while it's better structurally, going back to call __syscall_error
  23    can make things confusing if you're debugging---it looks like it's jumping
  24    backwards into the previous fn.  */
  25 #ifdef __PIC__
  26 #define PSEUDO(name, syscall_name, args) \
  27   .align 2;                                                                   \
  28   99: la t9,__syscall_error;                                                  \
  29   jr t9;                                                                      \
  30   ENTRY(name)                                                                 \
  31   .set noreorder;                                                             \
  32   .cpload t9;                                                                 \
  33   li v0, SYS_ify(syscall_name);                                               \
  34   syscall;                                                                    \
  35   .set reorder;                                                               \
  36   bne a3, zero, 99b;                                                          \
  37 L(syse1):
  38 #else
  39 #define PSEUDO(name, syscall_name, args) \
  40   .set noreorder;                                                             \
  41   .align 2;                                                                   \
  42   99: j __syscall_error;                                                      \
  43   nop;                                                                        \
  44   ENTRY(name)                                                                 \
  45   .set noreorder;                                                             \
  46   li v0, SYS_ify(syscall_name);                                               \
  47   syscall;                                                                    \
  48   .set reorder;                                                               \
  49   bne a3, zero, 99b;                                                          \
  50 L(syse1):
  51 #endif