source: rtems/cpukit/libdebugger/rtems-debugger-block.c @ b2353ed9

Last change on this file since b2353ed9 was b2353ed9, checked in by Chris Johns <chrisj@…>, on Jul 16, 2017 at 11:53:11 PM

libdebugger: Fixes to debugging, ARM support, locking, and gcc-7.1 warnings.

  • Add printk support to aid multi-core debugging.
  • Add lock trace to aid lock debugging.
  • Fixes to gcc-7.1 warnings.
  • Fixes from ticket #2879.
  • Add verbose command controls.
  • Change using the RTEMS sys/lock.h API to manage exception threads.
  • ARM hardware breakpoint fixes. Support for SMP stepping is not implemented, this requires use of the context id register.

Closes #2879.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 * Copyright (c) 2016 Chris Johns <chrisj@rtems.org>.
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 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <errno.h>
28#include <stdlib.h>
29
30#include "rtems-debugger-block.h"
31
32int
33rtems_debugger_block_create(rtems_debugger_block* block,
34                            size_t                step,
35                            size_t                size)
36{
37  int r = 0;
38  block->level = 0;
39  block->step = step;
40  block->count = step;
41  block->size = size;
42  block->block = calloc(block->count, block->size);
43  if (block->block == NULL)
44    errno = ENOMEM;
45  return r;
46}
47
48int
49rtems_debugger_block_destroy(rtems_debugger_block* block)
50{
51  free(block->block);
52  block->block = NULL;
53  block->level = 0;
54  block->count = 0;
55  block->size = 0;
56  return 0;
57}
58
59int
60rtems_debugger_block_resize(rtems_debugger_block* block)
61{
62  int r = 0;
63  if (block->level >= block->count) {
64    block->count += block->step;
65    block->block = realloc(block->block, block->count * block->size);
66    if (block->block == NULL) {
67      block->level = 0;
68      block->count = 0;
69      errno = ENOMEM;
70      r = -1;
71    }
72  }
73  return r;
74}
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