source: rtems/cpukit/libdebugger/rtems-debugger-block.c @ a0d4e99

Last change on this file since a0d4e99 was a0d4e99, checked in by Chris Johns <chrisj@…>, on Nov 25, 2016 at 4:13:36 AM

cpukit: Add libdebugger, a remote debugger agent for GDB.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*
2 * Copyright (c) 2016 Chris Johns <chrisj@rtems.org>.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <errno.h>
27#include <stdlib.h>
28
29#include "rtems-debugger-block.h"
30
31int
32rtems_debugger_block_create(rtems_debugger_block* block,
33                            size_t                step,
34                            size_t                size)
35{
36  int r = 0;
37  block->level = 0;
38  block->step = step;
39  block->count = step;
40  block->size = size;
41  block->block = calloc(block->count, block->size);
42  if (block->block == NULL)
43    errno = ENOMEM;
44  return r;
45}
46
47int
48rtems_debugger_block_destroy(rtems_debugger_block* block)
49{
50  free(block->block);
51  block->block = NULL;
52  block->level = 0;
53  block->count = 0;
54  block->size = 0;
55  return 0;
56}
57
58int
59rtems_debugger_block_resize(rtems_debugger_block* block)
60{
61  int r = 0;
62  if (block->level >= block->count) {
63    block->count += block->step;
64    block->block = realloc(block->block, block->count * block->size);
65    if (block->block == NULL) {
66      block->level = 0;
67      block->count = 0;
68      errno = ENOMEM;
69      r = -1;
70    }
71  }
72  return r;
73}
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