sysdeps/mach/i386/sysdep.h

   1 /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
   2
   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
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _MACH_I386_SYSDEP_H
  20 #define _MACH_I386_SYSDEP_H 1
  21
  22 /* Defines RTLD_PRIVATE_ERRNO and USE_DL_SYSINFO.  */
  23 #include <dl-sysdep.h>
  24 #include <tls.h>
  25
  26 #define LOSE asm volatile ("hlt")
  27
  28 #define SNARF_ARGS(entry_sp, argc, argv, envp)                                \
  29   do                                                                          \
  30     {                                                                         \
  31       char **p;                                                               \
  32       argc = (int) *entry_sp;                                                 \
  33       argv = (char **) (entry_sp + 1);                                        \
  34       p = argv;                                                               \
  35       while (*p++ != NULL)                                                    \
  36         ;                                                                     \
  37       if (p >= (char **) argv[0])                                             \
  38         --p;                                                                  \
  39       envp = p;                                                       \
  40     } while (0)
  41
  42 #define CALL_WITH_SP(fn, info, sp) \
  43   do {                                                                        \
  44         void **ptr = (void **) sp;                                            \
  45         *--(__typeof (info) *) ptr = info;                                    \
  46         ptr[-1] = ptr;                                                        \
  47         --ptr;                                                                \
  48     asm volatile ("movl %0, %%esp; call %1" : :                               \
  49                   "g" (ptr), "m" (*(long int *) (fn)) : "%esp");              \
  50   } while (0)
  51
  52 #define RETURN_TO(sp, pc, retval) \
  53   asm volatile ("movl %0, %%esp; jmp %*%1 # %2" \
  54                 : : "g" (sp), "r" (pc), "a" (retval))
  55
  56
  57 #define STACK_GROWTH_DOWN
  58
  59 /* Get the machine-independent Mach definitions.  */
  60 #include <sysdeps/mach/sysdep.h>
  61
  62
  63 /* This should be rearranged, but at the moment this file provides
  64    the most useful definitions for assembler syntax details.  */
  65 #undef ENTRY
  66 #undef ALIGN
  67 #include <sysdeps/unix/i386/sysdep.h>
  68
  69 #endif /* mach/i386/sysdep.h */