Add a bit-level transfer queue

[openocd.git] / src / helper / binarybuffer.h

diff --git a/src/helper/binarybuffer.h b/src/helper/binarybuffer.h
index 6b142dd1c7faf64fc66c440c12218f2e996b9137..cc0be57dcfbac7dcda4160d3d3b468236c36f821 100644 (file)
--- a/src/helper/binarybuffer.h
+++ b/src/helper/binarybuffer.h
@@ -24,6 +24,8 @@
 #ifndef BINARYBUFFER_H
 #define BINARYBUFFER_H
 
+#include "list.h"
+
 /** @file
  * Support functions to access arbitrary bits in a byte array
  */
@@ -129,4 +131,29 @@ static inline uint32_t fast_target_buffer_get_u32(const void *p, bool le)
        return le ? le_to_h_u32(p) : be_to_h_u32(p);
 }
 
-#endif /* BINARYBUFFER_H */
+static inline void bit_copy(uint8_t *dst, unsigned dst_offset, const uint8_t *src,
+       unsigned src_offset, unsigned bit_count)
+{
+       buf_set_buf(src, src_offset, dst, dst_offset, bit_count);
+}
+
+struct bit_copy_queue {
+       struct list_head list;
+};
+
+struct bit_copy_queue_entry {
+       uint8_t *dst;
+       unsigned dst_offset;
+       const uint8_t *src;
+       unsigned src_offset;
+       unsigned bit_count;
+       struct list_head list;
+};
+
+void bit_copy_queue_init(struct bit_copy_queue *q);
+int bit_copy_queued(struct bit_copy_queue *q, uint8_t *dst, unsigned dst_offset, const uint8_t *src,
+                   unsigned src_offset, unsigned bit_count);
+void bit_copy_execute(struct bit_copy_queue *q);
+void bit_copy_discard(struct bit_copy_queue *q);
+
+#endif /* BINARYBUFFER_H */