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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-09-16 22:17:23 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-09-16 22:17:23 +0000 |
commit | 41251f68c26bc1c928f99289b2a3d011206e4550 (patch) | |
tree | b9fc72c030301d7d1e841b723c7cbdfcccd09e13 /c/src/lib/libbsp/shared/bspgetworkarea.c | |
parent | 2008-09-16 Joel Sherrill <joel.sherrill@oarcorp.com> (diff) | |
download | rtems-41251f68c26bc1c928f99289b2a3d011206e4550.tar.bz2 |
2008-09-16 Joel Sherrill <joel.sherrill@oarcorp.com>
* bspgetworkarea.c: New file. This implementation should be useable
by most BSPs if they provide the proper support in their linker script.
Diffstat (limited to '')
-rw-r--r-- | c/src/lib/libbsp/shared/bspgetworkarea.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/shared/bspgetworkarea.c b/c/src/lib/libbsp/shared/bspgetworkarea.c new file mode 100644 index 0000000000..2a5f313517 --- /dev/null +++ b/c/src/lib/libbsp/shared/bspgetworkarea.c @@ -0,0 +1,44 @@ +/* + * This routine is an implementation of the bsp_get_work_area() + * that can be used by all m68k BSPs following linkcmds conventions + * regarding heap, stack, and workspace allocation. + * + * COPYRIGHT (c) 1989-2008. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * $Id$ + */ + +#include <bsp.h> +#include <bsp/bootcard.h> + +/* + * These are provided by the linkcmds for ALL of the BSPs which use this file. + */ +extern char RamBase[]; +extern char WorkAreaBase[]; +extern char HeapSize[]; +extern char RamSize[]; + +/* + * This method returns the base address and size of the area which + * is to be allocated between the RTEMS Workspace and the C Program + * Heap. + */ +void bsp_get_work_area( + void **work_area_start, + size_t *work_area_size, + void **heap_start, + size_t *heap_size +) +{ + *work_area_start = WorkAreaBase; + *work_area_size = (uintptr_t) RamBase + (uintptr_t) RamSize - + (uintptr_t) WorkAreaBase; + *heap_start = BSP_BOOTCARD_HEAP_USES_WORK_AREA; + *heap_size = (size_t) HeapSize; +} |