1 files changed, 73 insertions, 0 deletions
diff --git a/cpukit/libdebugger/rtems-debugger-block.c b/cpukit/libdebugger/rtems-debugger-block.c
new file mode 100644
index 0000000000..918e321ca6
--- /dev/null
+++ b/cpukit/libdebugger/rtems-debugger-block.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2016 Chris Johns <chrisj@rtems.org>.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include "rtems-debugger-block.h"
+
+int
+rtems_debugger_block_create(rtems_debugger_block* block,
+                            size_t                step,
+                            size_t                size)
+{
+  int r = 0;
+  block->level = 0;
+  block->step = step;
+  block->count = step;
+  block->size = size;
+  block->block = calloc(block->count, block->size);
+  if (block->block == NULL)
+    errno = ENOMEM;
+  return r;
+}
+
+int
+rtems_debugger_block_destroy(rtems_debugger_block* block)
+{
+  free(block->block);
+  block->block = NULL;
+  block->level = 0;
+  block->count = 0;
+  block->size = 0;
+  return 0;
+}
+
+int
+rtems_debugger_block_resize(rtems_debugger_block* block)
+{
+  int r = 0;
+  if (block->level >= block->count) {
+    block->count += block->step;
+    block->block = realloc(block->block, block->count * block->size);
+    if (block->block == NULL) {
+      block->level = 0;
+      block->count = 0;
+      errno = ENOMEM;
+      r = -1;
+    }
+  }
+  return r;
+}