source: rtems/bsps/include/bsp/utility.h @ 2afb22b

5
Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on 12/23/17 at 07:18:56

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: 4.7 KB
Line 
1/**
2 * @file
3 *
4 * @ingroup bsp_kit
5 *
6 * @brief Utility macros.
7 */
8
9/*
10 * Copyright (c) 2008-2011 embedded brains GmbH.  All rights reserved.
11 *
12 *  embedded brains GmbH
13 *  Obere Lagerstr. 30
14 *  82178 Puchheim
15 *  Germany
16 *  <rtems@embedded-brains.de>
17 *
18 * The license and distribution terms for this file may be
19 * found in the file LICENSE in this distribution or at
20 * http://www.rtems.org/license/LICENSE.
21 */
22
23#ifndef LIBCPU_SHARED_UTILITY_H
24#define LIBCPU_SHARED_UTILITY_H
25
26#include <stdint.h>
27
28#define BSP_BIT8(bit) \
29  ((uint8_t) (((unsigned int) 1) << (bit)))
30
31#define BSP_MSK8(first_bit, last_bit) \
32  ((uint8_t) ((BSP_BIT8((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
33
34#define BSP_FLD8(val, first_bit, last_bit) \
35  ((uint8_t) \
36    ((((unsigned int) (val)) << (first_bit)) & BSP_MSK8(first_bit, last_bit)))
37
38#define BSP_FLD8GET(reg, first_bit, last_bit) \
39  ((uint8_t) (((reg) & BSP_MSK8(first_bit, last_bit)) >> (first_bit)))
40
41#define BSP_FLD8SET(reg, val, first_bit, last_bit) \
42  ((uint8_t) (((reg) & ~BSP_MSK8(first_bit, last_bit)) \
43    | BSP_FLD8(val, first_bit, last_bit)))
44
45#define BSP_BIT16(bit) \
46  ((uint16_t) (((unsigned int) 1) << (bit)))
47
48#define BSP_MSK16(first_bit, last_bit) \
49  ((uint16_t) ((BSP_BIT16((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
50
51#define BSP_FLD16(val, first_bit, last_bit) \
52  ((uint16_t) \
53    ((((unsigned int) (val)) << (first_bit)) & BSP_MSK16(first_bit, last_bit)))
54
55#define BSP_FLD16GET(reg, first_bit, last_bit) \
56  ((uint16_t) (((reg) & BSP_MSK16(first_bit, last_bit)) >> (first_bit)))
57
58#define BSP_FLD16SET(reg, val, first_bit, last_bit) \
59  ((uint16_t) (((reg) & ~BSP_MSK16(first_bit, last_bit)) \
60    | BSP_FLD16(val, first_bit, last_bit)))
61
62#define BSP_BIT32(bit) \
63  ((uint32_t) (((uint32_t) 1) << (bit)))
64
65#define BSP_MSK32(first_bit, last_bit) \
66  ((uint32_t) ((BSP_BIT32((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
67
68#define BSP_FLD32(val, first_bit, last_bit) \
69  ((uint32_t) \
70    ((((uint32_t) (val)) << (first_bit)) & BSP_MSK32(first_bit, last_bit)))
71
72#define BSP_FLD32GET(reg, first_bit, last_bit) \
73  ((uint32_t) (((reg) & BSP_MSK32(first_bit, last_bit)) >> (first_bit)))
74
75#define BSP_FLD32SET(reg, val, first_bit, last_bit) \
76  ((uint32_t) (((reg) & ~BSP_MSK32(first_bit, last_bit)) \
77    | BSP_FLD32(val, first_bit, last_bit)))
78
79#define BSP_BIT64(bit) \
80  ((uint64_t) (((uint64_t) 1) << (bit)))
81
82#define BSP_MSK64(first_bit, last_bit) \
83  ((uint64_t) ((BSP_BIT64((last_bit) - (first_bit) + 1) - 1) << (first_bit)))
84
85#define BSP_FLD64(val, first_bit, last_bit) \
86  ((uint64_t) \
87    ((((uint64_t) (val)) << (first_bit)) & BSP_MSK64(first_bit, last_bit)))
88
89#define BSP_FLD64GET(reg, first_bit, last_bit) \
90  ((uint64_t) (((reg) & BSP_MSK64(first_bit, last_bit)) >> (first_bit)))
91
92#define BSP_FLD64SET(reg, val, first_bit, last_bit) \
93  ((uint64_t) (((reg) & ~BSP_MSK64(first_bit, last_bit)) \
94    | BSP_FLD64(val, first_bit, last_bit)))
95
96#define BSP_BBIT8(bit) \
97  BSP_BIT8(7 - (bit))
98
99#define BSP_BMSK8(first_bit, last_bit) \
100  BSP_MSK8(7 - (last_bit), 7 - (first_bit))
101
102#define BSP_BFLD8(val, first_bit, last_bit) \
103  BSP_FLD8(val, 7 - (last_bit), 7 - (first_bit))
104
105#define BSP_BFLD8GET(reg, first_bit, last_bit) \
106  BSP_FLD8GET(reg, 7 - (last_bit), 7 - (first_bit))
107
108#define BSP_BFLD8SET(reg, val, first_bit, last_bit) \
109  BSP_FLD8SET(reg, val, 7 - (last_bit), 7 - (first_bit))
110
111#define BSP_BBIT16(bit) \
112  BSP_BIT16(15 - (bit))
113
114#define BSP_BMSK16(first_bit, last_bit) \
115  BSP_MSK16(15 - (last_bit), 15 - (first_bit))
116
117#define BSP_BFLD16(val, first_bit, last_bit) \
118  BSP_FLD16(val, 15 - (last_bit), 15 - (first_bit))
119
120#define BSP_BFLD16GET(reg, first_bit, last_bit) \
121  BSP_FLD16GET(reg, 15 - (last_bit), 15 - (first_bit))
122
123#define BSP_BFLD16SET(reg, val, first_bit, last_bit) \
124  BSP_FLD16SET(reg, val, 15 - (last_bit), 15 - (first_bit))
125
126#define BSP_BBIT32(bit) \
127  BSP_BIT32(31 - (bit))
128
129#define BSP_BMSK32(first_bit, last_bit) \
130  BSP_MSK32(31 - (last_bit), 31 - (first_bit))
131
132#define BSP_BFLD32(val, first_bit, last_bit) \
133  BSP_FLD32(val, 31 - (last_bit), 31 - (first_bit))
134
135#define BSP_BFLD32GET(reg, first_bit, last_bit) \
136  BSP_FLD32GET(reg, 31 - (last_bit), 31 - (first_bit))
137
138#define BSP_BFLD32SET(reg, val, first_bit, last_bit) \
139  BSP_FLD32SET(reg, val, 31 - (last_bit), 31 - (first_bit))
140
141#define BSP_BBIT64(bit) \
142  BSP_BIT64(63 - (bit))
143
144#define BSP_BMSK64(first_bit, last_bit) \
145  BSP_MSK64(63 - (last_bit), 63 - (first_bit))
146
147#define BSP_BFLD64(val, first_bit, last_bit) \
148  BSP_FLD64(val, 63 - (last_bit), 63 - (first_bit))
149
150#define BSP_BFLD64GET(reg, first_bit, last_bit) \
151  BSP_FLD64GET(reg, 63 - (last_bit), 63 - (first_bit))
152
153#define BSP_BFLD64SET(reg, val, first_bit, last_bit) \
154  BSP_FLD64SET(reg, val, 63 - (last_bit), 63 - (first_bit))
155
156#endif /* LIBCPU_SHARED_UTILITY_H */
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