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  1. /*
  2.  * Copyright (c) 2006 Jakub Jermar
  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 libcia64   
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef LIBC_arm32_THREAD_H_
  36. #define LIBC_arm32_THREAD_H_
  37.  
  38. #include <unistd.h>
  39.  
  40. #define THREAD_INITIAL_STACK_PAGES_NO 1
  41.  
  42. #define ARM_TP_OFFSET   (-8)
  43.  
  44. typedef struct {
  45.     void *pst_data;
  46. } tcb_t;
  47.  
  48. static inline void __tcb_set(tcb_t *tcb)
  49. {
  50.     void *tls = (void *)tcb;
  51.     tls += sizeof(tcb_t) + ARM_TP_OFFSET;
  52.     asm volatile (
  53.         "mov r9, %0"
  54.         :
  55.         : "r"(tls)
  56.     );
  57. }
  58.  
  59. static inline tcb_t *__tcb_get(void)
  60. {
  61.     void *ret;
  62.     asm volatile (
  63.         "mov %0, r9"
  64.         : "=r"(ret)
  65.     );
  66.     return (tcb_t *)(ret - ARM_TP_OFFSET - sizeof(tcb_t));
  67. }
  68.  
  69. #endif
  70.  
  71. /** @}
  72.  */
  73.