sysdeps/mach/i386/sysdep.h

   1 /* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2007
   2      Free Software Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _MACH_I386_SYSDEP_H
  21 #define _MACH_I386_SYSDEP_H 1
  22
  23 /* Defines RTLD_PRIVATE_ERRNO and USE_DL_SYSINFO.  */
  24 #include <dl-sysdep.h>
  25 #include <tls.h>
  26
  27 #define LOSE asm volatile ("hlt")
  28
  29 #define SNARF_ARGS(entry_sp, argc, argv, envp)                                \
  30   do                                                                          \
  31     {                                                                         \
  32       register char **p;                                                      \
  33       argc = (int) *entry_sp;                                                 \
  34       argv = (char **) (entry_sp + 1);                                        \
  35       p = argv;                                                               \
  36       while (*p++ != NULL)                                                    \
  37         ;                                                                     \
  38       if (p >= (char **) argv[0])                                             \
  39         --p;                                                                  \
  40       envp = p;                                                       \
  41     } while (0)
  42
  43 #define CALL_WITH_SP(fn, info, sp) \
  44   do {                                                                        \
  45         void **ptr = (void **) sp;                                            \
  46         *--(__typeof (info) *) ptr = info;                                    \
  47         ptr[-1] = ptr;                                                        \
  48         --ptr;                                                                \
  49     asm volatile ("movl %0, %%esp; call %1" : :                               \
  50                   "g" (ptr), "m" (*(long int *) (fn)) : "%esp");              \
  51   } while (0)
  52
  53 #define RETURN_TO(sp, pc, retval) \
  54   asm volatile ("movl %0, %%esp; jmp %*%1 # %2" \
  55                 : : "g" (sp), "r" (pc), "a" (retval))
  56
  57
  58 #define STACK_GROWTH_DOWN
  59
  60 /* Get the machine-independent Mach definitions.  */
  61 #include <sysdeps/mach/sysdep.h>
  62
  63
  64 /* This should be rearranged, but at the moment this file provides
  65    the most useful definitions for assembler syntax details.  */
  66 #undef ENTRY
  67 #undef ALIGN
  68 #include <sysdeps/unix/i386/sysdep.h>
  69
  70 #endif /* mach/i386/sysdep.h */