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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-06-09 21:40:21 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-06-09 21:40:21 +0000 |
commit | ab6d662a0d84dfb96eb966470cd91fc2bacc5a2b (patch) | |
tree | 53a6747f65ad27379bc9fbcd438b2fc1515d6d77 /nuttx/arch/avr/src/common | |
parent | d8249796c804f056363cf9dc0fa588a1f718de0b (diff) | |
download | px4-nuttx-ab6d662a0d84dfb96eb966470cd91fc2bacc5a2b.tar.gz px4-nuttx-ab6d662a0d84dfb96eb966470cd91fc2bacc5a2b.tar.bz2 px4-nuttx-ab6d662a0d84dfb96eb966470cd91fc2bacc5a2b.zip |
Handle differences between AVR and AVR32 stacks
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3690 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/avr/src/common')
-rw-r--r-- | nuttx/arch/avr/src/common/up_createstack.c | 139 | ||||
-rw-r--r-- | nuttx/arch/avr/src/common/up_usestack.c | 123 |
2 files changed, 0 insertions, 262 deletions
diff --git a/nuttx/arch/avr/src/common/up_createstack.c b/nuttx/arch/avr/src/common/up_createstack.c deleted file mode 100644 index 15871ebc5..000000000 --- a/nuttx/arch/avr/src/common/up_createstack.c +++ /dev/null @@ -1,139 +0,0 @@ -/**************************************************************************** - * arch/avr/src/common/up_createstack.c - * - * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * 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 <nuttx/compiler.h> - -#include <sys/types.h> -#include <stdint.h> -#include <stdlib.h> -#include <sched.h> -#include <debug.h> - -#include <nuttx/kmalloc.h> -#include <nuttx/arch.h> -#include <arch/board/board.h> - -#include "up_arch.h" -#include "up_internal.h" - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -/**************************************************************************** - * Private Function Prototypes - ****************************************************************************/ - -/**************************************************************************** - * Global Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: up_create_stack - * - * Description: - * Allocate a stack for a new thread and setup - * up stack-related information in the TCB. - * - * 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 requested stack size. At least this much - * must be allocated. - ****************************************************************************/ - -int up_create_stack(_TCB *tcb, size_t stack_size) -{ - if (tcb->stack_alloc_ptr && - tcb->adj_stack_size != stack_size) - { - sched_free(tcb->stack_alloc_ptr); - tcb->stack_alloc_ptr = NULL; - } - - if (!tcb->stack_alloc_ptr) - { -#ifdef CONFIG_DEBUG - tcb->stack_alloc_ptr = (FAR void *)zalloc(stack_size); -#else - tcb->stack_alloc_ptr = (FAR void *)malloc(stack_size); -#endif - } - - if (tcb->stack_alloc_ptr) - { - size_t top_of_stack; - size_t size_of_stack; - - /* The AVR32 uses a push-down stack: the stack grows - * toward loweraddresses 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 = (size_t)tcb->stack_alloc_ptr + stack_size - 4; - - /* The AVR32 stack must be aligned at word (4 byte) - * boundaries. If necessary top_of_stack must be rounded - * down to the next boundary - */ - - top_of_stack &= ~3; - size_of_stack = top_of_stack - (size_t)tcb->stack_alloc_ptr + 4; - - /* Save the adjusted stack values in the _TCB */ - - tcb->adj_stack_ptr = (FAR void *)top_of_stack; - tcb->adj_stack_size = size_of_stack; - - up_ledon(LED_STACKCREATED); - return OK; - } - - return ERROR; -} diff --git a/nuttx/arch/avr/src/common/up_usestack.c b/nuttx/arch/avr/src/common/up_usestack.c deleted file mode 100644 index b2da00cf2..000000000 --- a/nuttx/arch/avr/src/common/up_usestack.c +++ /dev/null @@ -1,123 +0,0 @@ -/**************************************************************************** - * arch/avr/src/common/up_usestack.c - * - * Copyright (C) 2010 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * 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" - -/**************************************************************************** - * 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 AVR32 uses a push-down stack: the stack grows - * toward loweraddresses 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 AVR32 stack must be aligned at word (4 byte) - * boundaries. If necessary top_of_stack must be rounded - * down to the next boundary - */ - - top_of_stack &= ~3; - 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; -} - |