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author | Chris Johns <chrisj@rtems.org> | 2017-12-23 18:18:56 +1100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-01-25 08:45:26 +0100 |
commit | 2afb22b7e1ebcbe40373ff7e0efae7d207c655a9 (patch) | |
tree | 44759efe9374f13200a97e96d91bd9a2b7e5ce2a /bsps/i386/include/libcpu/page.h | |
parent | MAINTAINERS: Add myself to Write After Approval. (diff) | |
download | rtems-2afb22b7e1ebcbe40373ff7e0efae7d207c655a9.tar.bz2 |
Remove make preinstall
A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.
This has at least seven problems:
* The make preinstall step itself needs time and disk space.
* Errors in header files show up in the build tree copy. This makes it
hard for editors to open the right file to fix the error.
* There is no clear relationship between source and build tree header
files. This makes an audit of the build process difficult.
* The visibility of all header files in the build tree makes it
difficult to enforce API barriers. For example it is discouraged to
use BSP-specifics in the cpukit.
* An introduction of a new build system is difficult.
* Include paths specified by the -B option are system headers. This
may suppress warnings.
* The parallel build had sporadic failures on some hosts.
This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.
The new cpukit include directories are:
* cpukit/include
* cpukit/score/cpu/@RTEMS_CPU@/include
* cpukit/libnetworking
The new BSP include directories are:
* bsps/include
* bsps/@RTEMS_CPU@/include
* bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include
There are build tree include directories for generated files.
The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.
The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.
Update #3254.
Diffstat (limited to 'bsps/i386/include/libcpu/page.h')
-rw-r--r-- | bsps/i386/include/libcpu/page.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/bsps/i386/include/libcpu/page.h b/bsps/i386/include/libcpu/page.h new file mode 100644 index 0000000000..5e9cec2227 --- /dev/null +++ b/bsps/i386/include/libcpu/page.h @@ -0,0 +1,39 @@ +/* + * @file page.h + * + * Copyright (C) 1998 Eric Valette (valette@crf.canon.fr) + * Canon Centre Recherche France. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#ifndef _LIBCPU_i386_PAGE_H +#define _LIBCPU_i386_PAGE_H + +#ifndef ASM + +#include <rtems/score/cpu.h> + +/* C declaration for paging management */ + +extern int _CPU_is_cache_enabled(void); +extern int _CPU_is_paging_enabled(void); +extern int init_paging(void); +extern void _CPU_enable_paging(void); +extern void _CPU_disable_paging(void); +extern void _CPU_disable_cache(void); +extern void _CPU_enable_cache(void); +extern int _CPU_map_phys_address + (void **mappedAddress, void *physAddress, + int size, int flag); +extern int _CPU_unmap_virt_address (void *mappedAddress, int size); +extern int _CPU_change_memory_mapping_attribute + (void **newAddress, void *mappedAddress, + unsigned int size, unsigned int flag); +extern int _CPU_display_memory_attribute(void); + +# endif /* ASM */ + +#endif |