From 61d8b5feeed36e242a043befe9b11f7f8c294f58 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 26 Sep 2018 12:33:14 +0000 Subject: 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 . * 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 . [__USE_MISC] (MAP_GROWSUP): Only define this macro, not other macros defined in . * sysdeps/unix/sysv/linux/x86/bits/mman.h: Include . [__USE_MISC] (MAP_32BIT): Only define this macro, not other macros defined in . --- sysdeps/unix/sysv/linux/x86/bits/mman.h | 17 +---------------- 1 file changed, 1 insertion(+), 16 deletions(-) (limited to 'sysdeps/unix/sysv/linux/x86') diff --git a/sysdeps/unix/sysv/linux/x86/bits/mman.h b/sysdeps/unix/sysv/linux/x86/bits/mman.h index d897b8a2b2..b1d9cbd815 100644 --- a/sysdeps/unix/sysv/linux/x86/bits/mman.h +++ b/sysdeps/unix/sysv/linux/x86/bits/mman.h @@ -28,22 +28,7 @@ # define MAP_32BIT 0x40 /* Only give out 32-bit addresses. */ #endif -/* These are Linux-specific. */ -#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 /* Include generic Linux declarations. */ #include -- cgit v1.2.3-70-g09d2