From 41251f68c26bc1c928f99289b2a3d011206e4550 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Tue, 16 Sep 2008 22:17:23 +0000 Subject: 2008-09-16 Joel Sherrill * bspgetworkarea.c: New file. This implementation should be useable by most BSPs if they provide the proper support in their linker script. --- c/src/lib/libbsp/shared/ChangeLog | 5 ++++ c/src/lib/libbsp/shared/bspgetworkarea.c | 44 ++++++++++++++++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 c/src/lib/libbsp/shared/bspgetworkarea.c (limited to 'c/src/lib/libbsp') diff --git a/c/src/lib/libbsp/shared/ChangeLog b/c/src/lib/libbsp/shared/ChangeLog index 9c9063fcba..2ccc6d339c 100644 --- a/c/src/lib/libbsp/shared/ChangeLog +++ b/c/src/lib/libbsp/shared/ChangeLog @@ -1,3 +1,8 @@ +2008-09-16 Joel Sherrill + + * bspgetworkarea.c: New file. This implementation should be useable + by most BSPs if they provide the proper support in their linker script. + 2008-09-16 Joel Sherrill * clockdrv_shell.c: Remove unnecessary includes of rtems/libcsupport.h 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 +#include + +/* + * 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; +} -- cgit v1.2.3