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Always move 64 bit main thread stack to defined pthread stack area

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x86_64 only:
        * dcrt0.cc (_dll_crt0): Always move stack to pthread stack area.
        Explain why.
        * miscfuncs.cc (create_new_main_thread_stack): New function to create
        OS-like stack for main thread in pthread stack area.
        * miscfuncs.cc (create_new_main_thread_stack): Declare.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2015-12-03 13:02:55 +01:00
parent 81e6c7515d
commit 8a14e51901
4 changed files with 83 additions and 0 deletions
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4
winsup/cygwin/miscfuncs.h
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@@ -70,6 +70,10 @@ ssize_t __reg3 check_iovec (const struct iovec *, int, bool);
#define check_iovec_for_read(a, b) check_iovec ((a), (b), false)
#define check_iovec_for_write(a, b) check_iovec ((a), (b), true)
#ifdef __x86_64__
extern PVOID create_new_main_thread_stack (PVOID &allocationbase);
#endif
extern "C" DWORD WINAPI pthread_wrapper (PVOID arg);
extern "C" HANDLE WINAPI CygwinCreateThread (LPTHREAD_START_ROUTINE thread_func,
PVOID thread_arg, PVOID stackaddr,