sysdeps/unix/sysv/linux/sparc/sysdep.h

   1 /* Copyright (C) 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Miguel de Icaza <miguel@gnu.ai.mit.edu>, January 1997.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef _LINUX_SPARC_SYSDEP_H
  21 #define _LINUX_SPARC_SYSDEP_H 1
  22
  23 /* Kernel headers use __ASSEMBLY__ */
  24 #ifdef ASSEMBLER
  25 #define __ASSEMBLY__
  26 #endif
  27
  28 #include <sysdeps/unix/sparc/sysdep.h>
  29
  30 #undef SYS_ify
  31 #define SYS_ify(syscall_name) __NR_##syscall_name
  32
  33 #ifdef ASSEMBLER
  34
  35 #ifdef DONT_LOAD_G1
  36 # define LOADSYSCALL(x)
  37 #else
  38 # define LOADSYSCALL(x) mov __NR_##x, %g1
  39 #endif
  40
  41 /* Linux/SPARC uses a different trap number */
  42 #undef PSEUDO
  43
  44 #ifdef PIC
  45 #define SYSCALL_ERROR_HANDLER \
  46         .global C_SYMBOL_NAME(__errno_location);\
  47         .type   C_SYMBOL_NAME(__errno_location),@function;\
  48         save   %sp,-96,%sp;\
  49         call   __errno_location;\
  50         nop;\
  51         st %i0,[%o0];\
  52         restore;\
  53         retl;\
  54         mov -1,%o0;
  55 #else
  56 #define SYSCALL_ERROR_HANDLER \
  57         save %sp,-96,%sp;                                                     \
  58         call __errno_location;                                                \
  59         nop;                                                                  \
  60         st %i0,[%o0];                                                         \
  61         restore;                                                              \
  62         retl;                                                                 \
  63         mov -1,%o0;
  64 #endif   /* PIC */
  65
  66 #define PSEUDO(name, syscall_name, args) \
  67         .text;                                                                \
  68         ENTRY(name);                                                          \
  69         LOADSYSCALL(syscall_name);                                            \
  70         ta 0x10;                                                              \
  71         bcc,a 1f;                                                             \
  72         nop;                                                                  \
  73         SYSCALL_ERROR_HANDLER;                                                \
  74 1:;
  75
  76 #endif  /* ASSEMBLER */
  77
  78 #endif /* linux/sparc/sysdep.h */