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| author | Joseph Myers <joseph@codesourcery.com> | 2018-09-26 12:33:14 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2018-09-26 12:33:14 +0000 |
| commit | 61d8b5feeed36e242a043befe9b11f7f8c294f58 (patch) | |
| tree | c2fc88ccc8b269a9da4e6f66d39c12d8c3dd3662 /sysdeps/unix/sysv/linux/bits/mman.h | |
| parent | 4634128642f47da6542a4b73f8ff770d6b0765e5 (diff) | |
| download | glibc-61d8b5feeed36e242a043befe9b11f7f8c294f58.tar.gz | |
Share MAP_* flags between more architectures.
Continuing bits/mman.h unification between architectures using the
Linux kernel, this patch arranges for the common set of MAP_* flags to
be used by two more architectures. That common set is moved to
bits/mman-map-flags-generic.h, which is included by bits/mman.h, to
allow architectures to use that common set even if they also have
architecture-specific additions to it. As well as the generic
bits/mman.h, the versions for x86 and ia64 are also then made to
include bits/mman-map-flags-generic.h, so while they still need
architecture-specific bits/mman.h (for MAP_32BIT and MAP_GROWSUP
respectively), they do not need to duplicate the generic flag
definitions in there.
Tested for x86_64 and x86, and with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/bits/mman-map-flags-generic.h: New
file. Most contents moved from ....
* sysdeps/unix/sysv/linux/bits/mman.h: ... here. Move contents to
and include <bits/mman-map-flags-generic.h>.
* sysdeps/unix/sysv/linux/Makefile [$(subdir) = misc]
(sysdep_headers): Add bits/mman-map-flags-generic.h.
* sysdeps/unix/sysv/linux/ia64/bits/mman.h: Include
<bits/mman-map-flags-generic.h>.
[__USE_MISC] (MAP_GROWSUP): Only define this macro, not other
macros defined in <bits/mman-map-flags-generic.h>.
* sysdeps/unix/sysv/linux/x86/bits/mman.h: Include
<bits/mman-map-flags-generic.h>.
[__USE_MISC] (MAP_32BIT): Only define this macro, not other macros
defined in <bits/mman-map-flags-generic.h>.
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/mman.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/bits/mman.h | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/mman.h b/sysdeps/unix/sysv/linux/bits/mman.h index e98b5204bf..178a8edd90 100644 --- a/sysdeps/unix/sysv/linux/bits/mman.h +++ b/sysdeps/unix/sysv/linux/bits/mman.h @@ -23,23 +23,10 @@ /* These definitions are appropriate for architectures that, in the Linux kernel, either have no uapi/asm/mman.h, or have one that includes asm-generic/mman.h without any changes or additions - relevant to glibc. */ + relevant to glibc. If there are additions relevant to glibc, an + architecture-specific bits/mman.h is needed. */ -#ifdef __USE_MISC -# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ -# define MAP_DENYWRITE 0x00800 /* ETXTBSY. */ -# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ -# define MAP_LOCKED 0x02000 /* Lock the mapping. */ -# define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ -# define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ -# define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ -# define MAP_STACK 0x20000 /* Allocation is for a stack. */ -# define MAP_HUGETLB 0x40000 /* Create huge page mapping. */ -# define MAP_SYNC 0x80000 /* Perform synchronous page - faults for the mapping. */ -# define MAP_FIXED_NOREPLACE 0x100000 /* MAP_FIXED but do not unmap - underlying mapping. */ -#endif +#include <bits/mman-map-flags-generic.h> /* Include generic Linux declarations. */ #include <bits/mman-linux.h> |