diff options
Diffstat (limited to 'nuttx/arch/z16/src/common/up_usestack.c')
-rw-r--r-- | nuttx/arch/z16/src/common/up_usestack.c | 45 |
1 files changed, 26 insertions, 19 deletions
diff --git a/nuttx/arch/z16/src/common/up_usestack.c b/nuttx/arch/z16/src/common/up_usestack.c index 671930bbe..6396ce9c2 100644 --- a/nuttx/arch/z16/src/common/up_usestack.c +++ b/nuttx/arch/z16/src/common/up_usestack.c @@ -1,4 +1,4 @@ -/************************************************************ +/**************************************************************************** * arch/z16/common/up_usestack.c * * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved. @@ -31,11 +31,11 @@ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Included Files - ************************************************************/ + ****************************************************************************/ #include <nuttx/config.h> @@ -49,38 +49,45 @@ #include "up_internal.h" -/************************************************************ +/**************************************************************************** * Private Types - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Private Function Prototypes - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Global Functions - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Name: up_use_stack * * Description: - * Setup up stack-related information in the TCB - * using pre-allocated stack memory + * Setup up stack-related information in the TCB using pre-allocated stack + * memory. This function is called only from task_init() when a task or + * kernel thread is started (never for pthreads). * * The following TCB fields must be initialized: - * adj_stack_size: Stack size after adjustment for hardware, + * + * - adj_stack_size: Stack size after adjustment for hardware, * processor, etc. This value is retained only for debug * purposes. - * stack_alloc_ptr: Pointer to allocated stack - * adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The + * - stack_alloc_ptr: Pointer to allocated stack + * - adj_stack_ptr: Adjusted stack_alloc_ptr for HW. The * initial value of the stack pointer. * * Inputs: - * tcb: The TCB of new task - * stack_size: The allocated stack size. + * - tcb: The TCB of new task + * - stack_size: The allocated stack size. + * + * NOTE: Unlike up_stack_create() and up_stack_release, this function + * does not require the task type (ttype) parameter. The TCB flags will + * always be set to provide the task type to up_use_stack() if it needs + * that information. * - ************************************************************/ + ****************************************************************************/ int up_use_stack(struct tcb_s *tcb, void *stack, size_t stack_size) { |