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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. #ifndef __LIBC__mips32PSTHREAD_H__
  30. #define __LIBC__mips32PSTHREAD_H__
  31.  
  32. #include <types.h>
  33.  
  34. /* We define our own context_set, because we need to set
  35.  * the TLS pointer to the tcb+0x7000
  36.  *
  37.  * See tls_set in thread.h
  38.  */
  39. #define context_set(c, _pc, stack, size, ptls)          \
  40.     (c)->pc = (sysarg_t) (_pc);             \
  41.     (c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA;     \
  42.         (c)->tls = ((sysarg_t)(ptls)) + 0x7000 + sizeof(tcb_t);
  43.  
  44.  
  45. /* +16 is just for sure that the called function
  46.  * have space to store it's arguments
  47.  */
  48. #define SP_DELTA    (8+16)
  49.  
  50. typedef struct  {
  51.     uint32_t sp;
  52.     uint32_t pc;
  53.    
  54.     uint32_t s0;
  55.     uint32_t s1;
  56.     uint32_t s2;
  57.     uint32_t s3;
  58.     uint32_t s4;
  59.     uint32_t s5;
  60.     uint32_t s6;
  61.     uint32_t s7;
  62.     uint32_t s8;
  63.     uint32_t gp;
  64.     uint32_t tls; /* Thread local storage(=k1) */
  65. } context_t;
  66.  
  67. #endif
  68.