sysdeps/mach/i386/sysdep.h

   1 /* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #define LOSE asm volatile ("hlt")
  20
  21 #define SNARF_ARGS(entry_sp, argc, argv, envp)                                \
  22   do                                                                          \
  23     {                                                                         \
  24       register char **p;                                                      \
  25       argc = (int) *entry_sp;                                                 \
  26       argv = (char **) (entry_sp + 1);                                        \
  27       p = argv;                                                               \
  28       while (*p++ != NULL)                                                    \
  29         ;                                                                     \
  30       if (p >= (char **) argv[0])                                             \
  31         --p;                                                                  \
  32       envp = p;                                                       \
  33     } while (0)
  34
  35 #define CALL_WITH_SP(fn, info, sp) \
  36   do {                                                                        \
  37         void **ptr = (void **) sp;                                            \
  38         *--(__typeof (info) *) ptr = info;                                    \
  39         ptr[-1] = ptr;                                                        \
  40         --ptr;                                                                \
  41     asm volatile ("movl %0, %%esp; call %1" : :                               \
  42                   "g" (ptr), "m" (*(long int *) (fn)) : "%esp");              \
  43   } while (0)
  44
  45 #define RETURN_TO(sp, pc, retval) \
  46   asm volatile ("movl %0, %%esp; jmp %*%1 # %2" \
  47                 : : "g" (sp), "r" (pc), "a" (retval))
  48
  49
  50 #define STACK_GROWTH_DOWN
  51
  52 /* Get the machine-independent Mach definitions.  */
  53 #include_next <sysdep.h>
  54
  55
  56 /* This should be rearranged, but at the moment this file provides
  57    the most useful definitions for assembler syntax details.  */
  58 #undef ENTRY
  59 #undef ALIGN
  60 #include <sysdeps/unix/i386/sysdep.h>