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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup libcarm32  
  30.  * @{
  31.  */
  32. /** @file
  33.  * @ingroup libcarm32  
  34.  */
  35.  
  36. #ifndef LIBC_arm32_PSTHREAD_H_
  37. #define LIBC_arm32_PSTHREAD_H_
  38.  
  39. #include <types.h>
  40. #include <align.h>
  41. #include "thread.h"
  42.  
  43. #define STACK_ITEM_SIZE     4
  44.  
  45. /** see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */
  46. #define STACK_ALIGNMENT     8
  47.  
  48. #define SP_DELTA    (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
  49.  
  50. #define context_set(c, _pc, stack, size, ptls)          \
  51.     (c)->pc = (sysarg_t) (_pc);             \
  52.     (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA;     \
  53.         (c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET;
  54.  
  55.  
  56. typedef struct  {
  57.     uint32_t sp;
  58.     uint32_t pc;
  59.     uint32_t r4;
  60.     uint32_t r5;
  61.     uint32_t r6;
  62.     uint32_t r7;
  63.     uint32_t r8;
  64.     uint32_t tls;
  65.     uint32_t r10;
  66.     uint32_t r11;
  67. } context_t;
  68.  
  69.  
  70. #endif
  71.  
  72. /** @}
  73.  */
  74.