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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  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 debug
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <stdio.h>
  36. #include <assert.h>
  37. #include <errno.h>
  38. #include <sys/types.h>
  39. #include <udebug.h>
  40.  
  41. #include "../../../main.h"
  42. #include "../../../cons.h"
  43. #include "../include/bstore.h"
  44.  
  45. void bstore_initialize(bstore_t *bs)
  46. {
  47.     bs->valid = false;
  48. }
  49.  
  50. int bstore_save(bstore_t *bs, uintptr_t addr)
  51. {
  52.     uint32_t v;
  53.     int rc;
  54.  
  55.     assert(bs->valid == false);
  56.  
  57.     rc = udebug_mem_read(app_phone, &v, addr, sizeof(uint32_t));
  58.     if (rc == EOK) {
  59.         bs->valid = true;
  60.         bs->address = addr;
  61.         bs->value = v;
  62.     } else {
  63.         cons_printf("Error reading memory address 0x%zx\n", addr);
  64.     }
  65.  
  66.     return rc;
  67. }
  68.  
  69. int bstore_push(bstore_t *bs, uintptr_t addr, uint32_t value)
  70. {
  71.     int rc;
  72.  
  73.     rc = bstore_save(bs, addr);
  74.     if (rc != EOK) return rc;
  75.  
  76.     rc = udebug_mem_write(app_phone, &value, addr, sizeof(uint32_t));
  77.     if (rc != EOK) {
  78.         cons_printf("Error writing memory address 0x%zx\n", addr);
  79.         bstore_empty(bs);
  80.         return rc;
  81.     }
  82.  
  83.     return EOK;
  84. }
  85.  
  86. int bstore_pop(bstore_t *bs)
  87. {
  88.     int rc;
  89.  
  90.     assert(bs->valid == true);
  91.     rc = udebug_mem_write(app_phone, &bs->value, bs->address,
  92.         sizeof(uint32_t));
  93.  
  94.     if (rc == EOK) {
  95.         bs->valid = false;
  96.     } else {
  97.         cons_printf("Error writing memory address 0x%zx\n",
  98.             bs->address);
  99.     }
  100.  
  101.     return rc;
  102. }
  103.  
  104. void bstore_empty(bstore_t *bs)
  105. {
  106.     assert(bs->valid == true);
  107.     bs->valid = false;
  108. }
  109.  
  110. /** @}
  111.  */
  112.