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.

1 files changed, 183 insertions, 0 deletions

diff --git a/bsps/arm/include/bsp/start.h b/bsps/arm/include/bsp/start.h
new file mode 100644
index 0000000000..bf8eed4433
--- /dev/null
+++ b/bsps/arm/include/bsp/start.h
@@ -0,0 +1,183 @@
+/**
+ * @file
+ *
+ * @ingroup arm_start
+ *
+ * @brief ARM system low level start.
+ */
+
+/*
+ * Copyright (c) 2008-2013 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * 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 LIBBSP_ARM_SHARED_START_H
+#define LIBBSP_ARM_SHARED_START_H
+
+#include <string.h>
+
+#include <bsp/linker-symbols.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup arm_start System Start
+ *
+ * @ingroup arm_shared
+ *
+ * @brief ARM system low level start.
+ *
+ * @{
+ */
+
+#define BSP_START_TEXT_SECTION __attribute__((section(".bsp_start_text")))
+
+#define BSP_START_DATA_SECTION __attribute__((section(".bsp_start_data")))
+
+/*
+* Many ARM boot loaders pass arguments to loaded OS kernel
+*/
+#ifdef BSP_START_HOOKS_WITH_LOADER_ARGS
+#define BSP_START_HOOKS_LOADER_ARGS int saved_psr, int saved_machid, int saved_dtb_adr
+#else
+#define BSP_START_HOOKS_LOADER_ARGS void
+#endif
+
+/**
+* @brief System start entry.
+*/
+void _start(void);
+
+/**
+* @brief Start entry hook 0.
+*
+* This hook will be called from the start entry code after all modes and
+* stack pointers are initialized but before the copying of the exception
+* vectors.
+*/
+void bsp_start_hook_0(BSP_START_HOOKS_LOADER_ARGS);
+
+/**
+* @brief Start entry hook 1.
+*
+* This hook will be called from the start entry code after copying of the
+* exception vectors but before the call to boot_card().
+*/
+void bsp_start_hook_1(BSP_START_HOOKS_LOADER_ARGS);
+
+/**
+ * @brief Similar to standard memcpy().
+ *
+ * The memory areas must be word aligned.  Copy code will be executed from the
+ * stack.  If @a dest equals @a src nothing will be copied.
+ */
+void bsp_start_memcpy(int *dest, const int *src, size_t n);
+
+/**
+ * @brief ARM entry point to bsp_start_memcpy().
+ */
+void bsp_start_memcpy_arm(int *dest, const int *src, size_t n);
+
+/**
+ * @brief Copies all standard sections from the load to the runtime area.
+ */
+BSP_START_TEXT_SECTION static inline void bsp_start_copy_sections(void)
+{
+  /* Copy .text section */
+  bsp_start_memcpy(
+    (int *) bsp_section_text_begin,
+    (const int *) bsp_section_text_load_begin,
+    (size_t) bsp_section_text_size
+  );
+
+  /* Copy .rodata section */
+  bsp_start_memcpy(
+    (int *) bsp_section_rodata_begin,
+    (const int *) bsp_section_rodata_load_begin,
+    (size_t) bsp_section_rodata_size
+  );
+
+  /* Copy .data section */
+  bsp_start_memcpy(
+    (int *) bsp_section_data_begin,
+    (const int *) bsp_section_data_load_begin,
+    (size_t) bsp_section_data_size
+  );
+
+  /* Copy .fast_text section */
+  bsp_start_memcpy(
+    (int *) bsp_section_fast_text_begin,
+    (const int *) bsp_section_fast_text_load_begin,
+    (size_t) bsp_section_fast_text_size
+  );
+
+  /* Copy .fast_data section */
+  bsp_start_memcpy(
+    (int *) bsp_section_fast_data_begin,
+    (const int *) bsp_section_fast_data_load_begin,
+    (size_t) bsp_section_fast_data_size
+  );
+}
+
+BSP_START_TEXT_SECTION static inline void
+bsp_start_memcpy_libc(void *dest, const void *src, size_t n)
+{
+  if (dest != src) {
+    memcpy(dest, src, n);
+  }
+}
+
+/**
+ * @brief Copies the .data, .fast_text and .fast_data sections from the load to
+ * the runtime area using the C library memcpy().
+ *
+ * Works only in case the .start, .text and .rodata sections reside in one
+ * memory region.
+ */
+BSP_START_TEXT_SECTION static inline void bsp_start_copy_sections_compact(void)
+{
+  /* Copy .data section */
+  bsp_start_memcpy_libc(
+    bsp_section_data_begin,
+    bsp_section_data_load_begin,
+    (size_t) bsp_section_data_size
+  );
+
+  /* Copy .fast_text section */
+  bsp_start_memcpy_libc(
+    bsp_section_fast_text_begin,
+    bsp_section_fast_text_load_begin,
+    (size_t) bsp_section_fast_text_size
+  );
+
+  /* Copy .fast_data section */
+  bsp_start_memcpy_libc(
+    bsp_section_fast_data_begin,
+    bsp_section_fast_data_load_begin,
+    (size_t) bsp_section_fast_data_size
+  );
+}
+
+BSP_START_TEXT_SECTION static inline void bsp_start_clear_bss(void)
+{
+  memset(bsp_section_bss_begin, 0, (size_t) bsp_section_bss_size);
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_ARM_SHARED_START_H */