bbacff94d0
It's convenient for userspace (in particular, glibc) to find a definition of MAP_STACK. We use MAP_GROWSDOWN as an alias since that's appropriate for the main stack, and since our current allocation of mmap flags bits is running a bit short otherwise. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#ifndef _ASM_TILE_MMAN_H
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#define _ASM_TILE_MMAN_H
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#include <asm-generic/mman-common.h>
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#include <arch/chip.h>
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/* Standard Linux flags */
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#define MAP_POPULATE 0x0040 /* populate (prefault) pagetables */
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#define MAP_NONBLOCK 0x0080 /* do not block on IO */
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#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
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#define MAP_STACK MAP_GROWSDOWN /* provide convenience alias */
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#define MAP_LOCKED 0x0200 /* pages are locked */
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#define MAP_NORESERVE 0x0400 /* don't check for reservations */
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#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
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#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
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#define MAP_HUGETLB 0x4000 /* create a huge page mapping */
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/*
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* Flags for mlockall
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*/
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#define MCL_CURRENT 1 /* lock all current mappings */
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#define MCL_FUTURE 2 /* lock all future mappings */
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#endif /* _ASM_TILE_MMAN_H */
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