source: rtems/bsps/sparc/include/libcpu/access.h @ 2afb22b

5
Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on Dec 23, 2017 at 7:18:56 AM

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.

  • Property mode set to 100644
File size: 1.3 KB
Line 
1/*
2 *  access.h  - access routines for SPARC. SPARC is big endian only.
3 *
4 *  COPYRIGHT (c) 2011
5 *  Aeroflex Gaisler.
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.org/license/LICENSE.
10 */
11
12#ifndef _LIBCPU_ACCESS_H
13#define _LIBCPU_ACCESS_H
14
15#include <rtems/system.h>
16#include <rtems/score/cpu.h>
17
18#ifdef __cplusplus
19extern "C" {
20#endif
21
22/* "Raw" access */
23extern uint8_t _ld8(uint8_t *addr);
24extern void _st8(uint8_t *addr, uint8_t val);
25extern uint16_t _ld16(uint16_t *addr);
26extern void _st16(uint16_t *addr, uint16_t val);
27extern uint32_t _ld32(uint32_t *addr);
28extern void _st32(uint32_t *addr, uint32_t val);
29extern uint64_t _ld64(uint64_t *addr);
30extern void _st64(uint64_t *addr, uint64_t val);
31
32/* Aliases for Big Endian */
33extern uint16_t _ld_be16(uint16_t *addr);
34extern void _st_be16(uint16_t *addr, uint16_t val);
35extern uint32_t _ld_be32(uint32_t *addr);
36extern void _st_be32(uint32_t *addr, uint32_t val);
37extern uint64_t _ld_be64(uint64_t *addr);
38extern void _st_be64(uint64_t *addr, uint64_t val);
39
40/* Little endian */
41extern uint16_t _ld_le16(uint16_t *addr);
42extern void _st_le16(uint16_t *addr, uint16_t val);
43extern uint32_t _ld_le32(uint32_t *addr);
44extern void _st_le32(uint32_t *addr, uint32_t val);
45
46#ifdef __cplusplus
47}
48#endif
49
50#endif
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