libgcc/config/i386/enable-execute-stack-mingw32.c

   1 /* Implement __enable_execute_stack for Windows32.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it under
   7    the terms of the GNU General Public License as published by the Free
   8    Software Foundation; either version 3, or (at your option) any later
   9    version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14    for more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25 #define WIN32_LEAN_AND_MEAN
  26 #include <stdlib.h>
  27 #include <windows.h>
  28
  29 extern void __enable_execute_stack (void *);
  30
  31 void
  32 __enable_execute_stack (void *addr)
  33 {
  34   MEMORY_BASIC_INFORMATION b;
  35
  36   if (!VirtualQuery (addr, &b, sizeof(b)))
  37     abort ();
  38   VirtualProtect (b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE,
  39                   &b.Protect);
  40 }