source: rtems/bsps/powerpc/psim/include/tm27.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: 1.7 KB
Line 
1/*
2 * @file
3 * @ingroup powerpc_psim
4 * @brief Implementations for interrupt mechanisms for Time Test 27
5 */
6
7/*
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.rtems.org/license/LICENSE.
11 */
12
13#ifndef _RTEMS_TMTEST27
14#error "This is an RTEMS internal file you must not include directly."
15#endif
16
17#ifndef __tm27_h
18#define __tm27_h
19
20#include <bsp/irq.h>
21
22/*
23 *  Stuff for Time Test 27
24 */
25
26#define MUST_WAIT_FOR_INTERRUPT 1
27
28void nullFunc() {}
29static rtems_irq_connect_data clockIrqData = {BSP_DECREMENTER,
30                                              0,
31                                              (rtems_irq_enable)nullFunc,
32                                              (rtems_irq_disable)nullFunc,
33                                              (rtems_irq_is_enabled) nullFunc};
34
35void Install_tm27_vector(void (*_handler)())
36{
37  clockIrqData.hdl = _handler;
38  if (!BSP_install_rtems_irq_handler (&clockIrqData)) {
39        printk("Error installing clock interrupt handler!\n");
40        rtems_fatal_error_occurred(1);
41  }
42}
43
44#define Cause_tm27_intr()  \
45  do { \
46    uint32_t _clicks = 1; \
47    __asm__ volatile( "mtdec %0" : "=r" ((_clicks)) : "r" ((_clicks)) ); \
48  } while (0)
49
50
51#define Clear_tm27_intr() \
52  do { \
53    uint32_t _clicks = 0xffffffff; \
54    __asm__ volatile( "mtdec %0" : "=r" ((_clicks)) : "r" ((_clicks)) ); \
55  } while (0)
56
57#define Lower_tm27_intr() \
58  do { \
59    uint32_t _msr = 0; \
60    _ISR_Set_level( 0 ); \
61    __asm__ volatile( "mfmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \
62    _msr |=  0x8002; \
63    __asm__ volatile( "mtmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \
64  } while (0)
65
66#endif
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