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

   1 /* Copyright (C) 1992-2014 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   .set nomips16;                                                              \
  30   cfi_startproc;                                                              \
  31   99:;                                                                        \
  32   .set noat;                                                                  \
  33   .cpsetup t9, $1, name;                                                      \
  34   cfi_register (gp, $1);                                                      \
  35   .set at;                                                                    \
  36   dla t9,__syscall_error;                                                     \
  37   .cpreturn;                                                                  \
  38   cfi_restore (gp);                                                           \
  39   jr t9;                                                                      \
  40   cfi_endproc;                                                                \
  41   ENTRY(name)                                                                 \
  42   li v0, SYS_ify(syscall_name);                                               \
  43   syscall;                                                                    \
  44   bne a3, zero, 99b;                                                          \
  45 L(syse1):
  46 #else
  47 #define PSEUDO(name, syscall_name, args) \
  48   .set noreorder;                                                             \
  49   .align 2;                                                                   \
  50   .set nomips16;                                                              \
  51   cfi_startproc;                                                              \
  52   99: j __syscall_error;                                                      \
  53   nop;                                                                        \
  54   cfi_endproc;                                                                \
  55   ENTRY(name)                                                                 \
  56   .set noreorder;                                                             \
  57   li v0, SYS_ify(syscall_name);                                               \
  58   syscall;                                                                    \
  59   .set reorder;                                                               \
  60   bne a3, zero, 99b;                                                          \
  61 L(syse1):
  62 #endif
  63
  64 #endif