Defined useful sized data buffer. It contains pointer to data and size of this data. Also, defined some macros for init and free.

Signed-off-by: Mihail Abakumov <mikhail.abakumov@ispras.ru>
Signed-off-by: Pavel Dovgalyuk <dovgaluk@ispras.ru>
Signed-off-by: Dmitriy Koltunov <koltunov@ispras.ru>
---
 include/exec/windbgstub-utils.h |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 5aa54550cd..f0da3cbd86 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -74,6 +74,22 @@ typedef struct PacketData {
     uint16_t extra_size;
 } PacketData;
 
+typedef struct SizedBuf {
+    uint8_t *data;
+    size_t size;
+} SizedBuf;
+
+#define SBUF_INIT(buf, mem_ptr, len) do { \
+    buf.data = mem_ptr;                   \
+    buf.size = len;                       \
+} while (false)
+#define SBUF_MALLOC(buf, size) SBUF_INIT(buf, g_malloc0(size), size)
+#define SBUF_FREE(buf) do { \
+    g_free(buf.data);       \
+    buf.data = NULL;        \
+    buf.size = 0;           \
+} while (false)
+
 InitedAddr *windbg_get_KPCR(void);
 InitedAddr *windbg_get_version(void);