1 files changed, 0 insertions, 155 deletions
diff --git a/nuttx/arch/arm/src/common/up_usestack.c b/nuttx/arch/arm/src/common/up_usestack.c
deleted file mode 100644
index a3f4f4816..000000000
--- a/nuttx/arch/arm/src/common/up_usestack.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/****************************************************************************
- * arch/arm/src/common/up_usestack.c
- *
- *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <sys/types.h>
-#include <stdint.h>
-#include <sched.h>
-#include <debug.h>
-
-#include <nuttx/kmalloc.h>
-#include <nuttx/arch.h>
-
-#include "up_internal.h"
-
-/****************************************************************************
- * Pre-processor Macros
- ****************************************************************************/
-
-/* ARM requires at least a 4-byte stack alignment.  For use with EABI and
- * floating point, the stack must be aligned to 8-byte addresses.
- */
-
-#ifndef CONFIG_STACK_ALIGNMENT
-
-/* The symbol  __ARM_EABI__ is defined by GCC if EABI is being used.  If you
- * are not using GCC, make sure that CONFIG_STACK_ALIGNMENT is set correctly!
- */
-
-#  ifdef __ARM_EABI__
-#    define CONFIG_STACK_ALIGNMENT 8
-#  else
-#    define CONFIG_STACK_ALIGNMENT 4
-#  endif
-#endif
-
-/* Stack alignment macros */
-
-#define STACK_ALIGN_MASK    (CONFIG_STACK_ALIGNMENT-1)
-#define STACK_ALIGN_DOWN(a) ((a) & ~STACK_ALIGN_MASK)
-#define STACK_ALIGN_UP(a)   (((a) + STACK_ALIGN_MASK) & ~STACK_ALIGN_MASK)
-
-/****************************************************************************
- * 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
- *
- *   The following TCB fields must be initialized:
- *   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
- *     initial value of the stack pointer.
- *
- * Inputs:
- *   tcb: The TCB of new task
- *   stack_size:  The allocated stack size.
- *
- ****************************************************************************/
-
-int up_use_stack(_TCB *tcb, void *stack, size_t stack_size)
-{
-  size_t top_of_stack;
-  size_t size_of_stack;
-
-  if (tcb->stack_alloc_ptr)
-    {
-      sched_free(tcb->stack_alloc_ptr);
-    }
-
-  /* Save the stack allocation */
-
-  tcb->stack_alloc_ptr = stack;
-
-  /* The ARM uses a push-down stack:  the stack grows toward lower addresses
-   * in memory.  The stack pointer register, points to the lowest, valid
-   * work address (the "top" of the stack).  Items on the stack are
-   * referenced as positive word offsets from sp.
-   */
-
-  top_of_stack = (uint32_t)tcb->stack_alloc_ptr + stack_size - 4;
-
-  /* The ARM stack must be aligned; 4 byte alignment for OABI and 8-byte
-   * alignment for EABI. If necessary top_of_stack must be rounded down
-   * to the next boundary
-   */
-
-  top_of_stack = STACK_ALIGN_DOWN(top_of_stack);
-
-  /* The size of the stack in bytes is then the difference between
-   * the top and the bottom of the stack (+4 because if the top
-   * is the same as the bottom, then the size is one 32-bit element).
-   * The size need not be aligned.
-   */
-
-  size_of_stack = top_of_stack - (uint32_t)tcb->stack_alloc_ptr + 4;
-
-  /* Save the adjusted stack values in the _TCB */
-
-  tcb->adj_stack_ptr  = (uint32_t*)top_of_stack;
-  tcb->adj_stack_size = size_of_stack;
-
-  return OK;
-}