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/* memory_layout.h: document all addresses crucial to the fixed memory
layout of Cygwin processes.
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. */
/* This is where Cygwin executables are loaded to, unless dynamicbase is
enabled in the PE/COFF header of the executable file. */
#define EXECUTABLE_ADDRESS 0x100400000UL
/* Fixed address set by the linker. The Cygwin DLL will have this address set
in the DOS header. Keep this area free with ASLR, for the case where
dynamicbase is accidentally not set in the PE/COFF header of the DLL. */
#define CYGWIN_DLL_ADDRESS 0x180040000UL
/* New with ASLR: We need a fixed place for the global shared memory areas.
Prior to ASLR, the addresses were relative to the address the Cygwin DLL
was loaded to. */
#define SHARED_REGIONS_ADDRESS_LOW 0x1f0000000UL
#define CYGWIN_REGION_ADDRESS 0x1f0000000UL
#define USER_REGION_ADDRESS 0x1f2000000UL
#define PINFO_REGION_ADDRESS 0x1f4000000UL
#define SHARED_CONSOLE_REGION_ADDRESS 0x1f6000000UL
#define SHARED_REGIONS_ADDRESS_HIGH 0x200000000UL
/* Rebased DLLs are located in this 16 Gigs arena. Will be kept for
backward compatibility. */
#define REBASED_DLL_STORAGE_LOW 0x200000000UL
#define REBASED_DLL_STORAGE_HIGH 0x400000000UL
/* Auto-image-based DLLs are located in this 16 Gigs arena. This is used
by the linker to set a default address for DLLs. */
#define AUTOBASED_DLL_STORAGE_LOW 0x400000000UL
#define AUTOBASED_DLL_STORAGE_HIGH 0x600000000UL
/* Storage area for thread stacks. */
#define THREAD_STORAGE_LOW 0x600000000UL
#define THREAD_STORAGE_HIGH 0x800000000UL
/* That's where the cygheap is located. CYGHEAP_STORAGE_INITIAL defines the
end of the initially committed heap area. */
#define CYGHEAP_STORAGE_LOW 0x800000000UL
#define CYGHEAP_STORAGE_INITIAL 0x800300000UL
#define CYGHEAP_STORAGE_HIGH 0xa00000000UL
/* This is where the user heap starts. There's no defined end address.
The user heap pontentially grows into the mmap arena. However,
the user heap grows upwards and the mmap arena grows downwards,
so there's not much chance to meet unluckily. */
#define USERHEAP_START 0xa00000000UL
/* The memory region used for memory maps. Mmaps grow downwards.
Set the lowest address to leave ~32 Gigs for heap.
Up to Win 8 we only have a 44 bit address space, 48 bit address space
starting with 8.1, so the max value is a system-specific variable. */
#define MMAP_STORAGE_LOW 0x001000000000UL
#define __MMAP_STORAGE_HIGH_LEGACY 0x070000000000UL
#define __MMAP_STORAGE_HIGH 0x700000000000UL
#define MMAP_STORAGE_HIGH wincap.mmap_storage_high ()
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