libgloss/nds32/syscall_extra.h

   1 /*
   2 Copyright (c) 2013 Andes Technology Corporation.
   3 All rights reserved.
   4
   5 Redistribution and use in source and binary forms, with or without
   6 modification, are permitted provided that the following conditions are met:
   7
   8     Redistributions of source code must retain the above copyright
   9     notice, this list of conditions and the following disclaimer.
  10
  11     Redistributions in binary form must reproduce the above copyright
  12     notice, this list of conditions and the following disclaimer in the
  13     documentation and/or other materials provided with the distribution.
  14
  15     The name of the company may not be used to endorse or promote
  16     products derived from this software without specific prior written
  17     permission.
  18
  19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22 DISCLAIMED.  IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
  23 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  26 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 */
  30 #ifndef _SYSCALL_EXTRA_H
  31 #define _SYSCALL_EXTRA_H
  32
  33
  34 /* These are additional syscalls for nds32 target. */
  35 #define SYS_rename      3001
  36 #define SYS_isatty      3002
  37 #define SYS_system      3003
  38
  39 #define SYS_geterr      6001
  40 #define SYS_getcmdline  6002
  41
  42
  43 /* Define macros that generate assembly output.  */
  44 .macro SYS_WRAPPER name num
  45         .text
  46         .global \name
  47         .type   \name, @function
  48         .align  2
  49 \name:
  50         /* Make syscall with arg=`\num'.
  51            Reture value `-1' stored in $r0 means there is something wrong.
  52            If there is something wrong, make syscall to get `SYS_geterr' to get
  53            error code to see what exactly happens and store it in errno  .  */
  54         syscall \num            /* Make syscall with arg=`\num'.  */
  55         j       __syscall_error_handler
  56         .size   \name, .-\name
  57 .endm
  58
  59 #endif /* _SYSCALL_EXTRA_H */