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acadia-newlib/winsup/cygwin/wow64.h

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* Makefile.in (DLL_OFILES): Add wow64.o. * dcrt0.cc (CYGWIN_GUARD): Drop execute permission for stack, it's not used for stacks by the OS either. (child_info_fork::alloc_stack_hard_way): Ditto. (child_info_fork::alloc_stack): Don't alloc_stack_hard_way under WOW64 if forked from a 64 bit parent. Set child's StackBase to parent's StackBase. Add comments to explain why. (wow64_respawn): Move to wow64.cc. (wow64_started_from_native64): Move to wow64.cc. (respawn_wow64_process): Move to wow64.cc. (dll_crt0_0): Drop wow64_test_stack_marker and move stack test into wow64_test_for_64bit_parent function. Don't return early if WOW64 process has been started from native 64 bit process. (_dll_crt0): Implement moving stack for WOW64 processes started from native 64 bit process. * wow64.cc: New file. (wow64_has_64bit_parent): Rename from wow64_respawn. (wow64_test_for_64bit_parent): Rename from wow64_started_from_native64. Change comment. (wow64_revert_to_original_stack): New function. (wow64_respawn_process): Rename from respawn_wow64_process for symmetry. * wow64.h: New file.
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/* wow64.h
Copyright 2011 Red Hat, Inc.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
extern bool NO_COPY wow64_has_64bit_parent;
extern bool wow64_test_for_64bit_parent ();
extern PVOID wow64_revert_to_original_stack (PVOID &allocationbase);
* wow64.cc (wow64_revert_to_original_stack): Fix comment. * wow64.h (wow64_respawn_process): Declare noreturn.
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extern void wow64_respawn_process () __attribute__ ((noreturn));