ports/sysdeps/unix/mips/mips64/n64/sysdep.h

   1 /* Copyright (C) 1992-2012 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Alexandre Oliva <aoliva@redhat.com>.
   4
   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.
   9
  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.
  14
  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/>.  */
  18
  19 #include <sysdeps/unix/mips/sysdep.h>
  20
  21 #ifdef __ASSEMBLER__
  22
  23 /* Note that while it's better structurally, going back to call __syscall_error
  24    can make things confusing if you're debugging---it looks like it's jumping
  25    backwards into the previous fn.  */
  26 #ifdef __PIC__
  27 #define PSEUDO(name, syscall_name, args) \
  28   .align 2;                                                                   \
  29   99:;                                                                        \
  30   .set noat;                                                                  \
  31   .cpsetup t9, $1, name;                                                      \
  32   .set at;                                                                    \
  33   dla t9,__syscall_error;                                                     \
  34   .cpreturn;                                                                  \
  35   jr t9;                                                                      \
  36   ENTRY(name)                                                                 \
  37   li v0, SYS_ify(syscall_name);                                               \
  38   syscall;                                                                    \
  39   bne a3, zero, 99b;                                                          \
  40 L(syse1):
  41 #else
  42 #define PSEUDO(name, syscall_name, args) \
  43   .set noreorder;                                                             \
  44   .align 2;                                                                   \
  45   99: j __syscall_error;                                                      \
  46   nop;                                                                        \
  47   ENTRY(name)                                                                 \
  48   .set noreorder;                                                             \
  49   li v0, SYS_ify(syscall_name);                                               \
  50   syscall;                                                                    \
  51   .set reorder;                                                               \
  52   bne a3, zero, 99b;                                                          \
  53 L(syse1):
  54 #endif
  55
  56 #endif