sysdeps/unix/mips/mips64/n32/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 Alexandre Oliva <aoliva@redhat.com>.
   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 #ifdef __ASSEMBLER__
  23
  24 /* Note that while it's better structurally, going back to call __syscall_error
  25    can make things confusing if you're debugging---it looks like it's jumping
  26    backwards into the previous fn.  */
  27 #ifdef __PIC__
  28 #define PSEUDO(name, syscall_name, args) \
  29   .align 2;                                                                   \
  30   99:;                                                                        \
  31   .set noat;                                                                  \
  32   .cpsetup t9, $1, name;                                                      \
  33   .set at;                                                                    \
  34   la t9,__syscall_error;                                                      \
  35   .cpreturn;                                                                  \
  36   jr t9;                                                                      \
  37   ENTRY(name)                                                                 \
  38   li v0, SYS_ify(syscall_name);                                               \
  39   syscall;                                                                    \
  40   bne a3, zero, 99b;                                                          \
  41 L(syse1):
  42 #else
  43 #define PSEUDO(name, syscall_name, args) \
  44   .set noreorder;                                                             \
  45   .align 2;                                                                   \
  46   99: j __syscall_error;                                                      \
  47   nop;                                                                        \
  48   ENTRY(name)                                                                 \
  49   .set noreorder;                                                             \
  50   li v0, SYS_ify(syscall_name);                                               \
  51   syscall;                                                                    \
  52   .set reorder;                                                               \
  53   bne a3, zero, 99b;                                                          \
  54 L(syse1):
  55 #endif
  56
  57 #endif