10e48e3927
2011-05-29 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> Joseph Myers <joseph@codesourcery.com> gcc: * config/alpha/netbsd.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/alpha/osf5.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/darwin.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/i386/mingw32.h (MINGW_ENABLE_EXECUTE_STACK): Remove. (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. [IN_LIBGCC2]: Don't include <windows.h>. * config/i386/netbsd-elf.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/i386/netbsd64.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/netbsd.h (NETBSD_ENABLE_EXECUTE_STACK): Remove. * config/openbsd.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/sol2.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/sparc/freebsd.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/sparc/netbsd-elf.h (ENABLE_EXECUTE_STACK): Remove. (HAVE_ENABLE_EXECUTE_STACK): Define. * config/alpha/alpha.c (alpha_trampoline_init): Test HAVE_ENABLE_EXECUTE_STACK. * config/i386/i386.c (ix86_trampoline_init): Likewise. * config/sparc/sparc.c (sparc32_initialize_trampoline): Likewise. (sparc64_initialize_trampoline): Likewise. * libgcc2.c [L_enable_execute_stack]: Remove. * system.h (ENABLE_EXECUTE_STACK): Poison. * doc/tm.texi.in (Trampolines, ENABLE_EXECUTE_STACK): Remove. * doc/tm.texi: Regenerate. * Makefile.in (LIBGCC2_CFLAGS): Add -fbuilding-libgcc. gcc/c-family: * c.opt (fbuilding-libgcc): New option. * c-cppbuiltin.c (c_cpp_builtins): Define __LIBGCC_TRAMPOLINE_SIZE__ if flag_building_libgcc. libgcc: * enable-execute-stack-empty.c: New file. * enable-execute-stack-mprotect.c: New file. * config/i386/enable-execute-stack-mingw32.c: New file. * config.host (enable_execute_stack): New variable. Select appropriate variants. * configure.ac: Link enable-execute-stack.c to $enable_execute_stack. * configure: Regenerate. * Makefile.in (LIB2ADD): Add enable-execute-stack.c. (lib2funcs): Remove _enable_execute_stack. Co-Authored-By: Joseph Myers <joseph@codesourcery.com> From-SVN: r174843
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/* Implement __enable_execute_stack for Windows32.
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Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <windows.h>
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extern void __enable_execute_stack (void *);
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void
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__enable_execute_stack (void *addr)
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{
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MEMORY_BASIC_INFORMATION b;
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if (!VirtualQuery (addr, &b, sizeof(b)))
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abort ();
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VirtualProtect (b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE,
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&b.Protect);
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}
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