sysdeps/mach/powerpc/sysdep.h

   1 /* system call details for Mach on PowerPC
   2    Copyright (C) 2001,02 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 License as
   7    published by the Free Software Foundation; either version 2.1 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    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; 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 _MACH_POWERPC_SYSDEP_H
  21 #define _MACH_POWERPC_SYSDEP_H
  22
  23 #define START_ARGS char **sparg
  24 #define SNARF_ARGS(argc, argv, envp) \
  25   do {                               \
  26     argv = &sparg[1];                \
  27     argc = *(int *)sparg;            \
  28     envp = &argv[argc + 1];          \
  29   } while (0)
  30
  31 #define CALL_WITH_SP(fn, sp) \
  32   do {                                                 \
  33     register long __sp = (long) sp, __fn = (long) fn; \
  34     asm volatile ("mr 1, %0; mtlr %1; blr"            \
  35                   : : "r" (__sp), "r" (__fn));        \
  36   } while (0)
  37
  38 #define STACK_GROWTH_DOWN
  39
  40 #define RETURN_TO(sp, pc, retval) \
  41      asm volatile ("mr 1, %0; mtctr %1; mr 3, %2; bctr" \
  42                    : : "r" (sp), "r" (pc), "r" (retval))
  43
  44 /* Get the machine-independent Mach definitions.  */
  45 #define _MACH_MACHINE_ASM_H 1   /* Kludge to avoid bad Darwin header file.  */
  46 #include <sysdeps/mach/sysdep.h>
  47
  48 #undef ENTRY
  49 #include <sysdeps/unix/powerpc/sysdep.h>
  50
  51 #endif  /* _MACH_POWERPC_SYSDEP_H */