summaryrefslogtreecommitdiffstats
path: root/nouveau/nvif/unpack.h
diff options
context:
space:
mode:
Diffstat (limited to 'nouveau/nvif/unpack.h')
-rw-r--r--nouveau/nvif/unpack.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/nouveau/nvif/unpack.h b/nouveau/nvif/unpack.h
new file mode 100644
index 0000000..751bcf4
--- /dev/null
+++ b/nouveau/nvif/unpack.h
@@ -0,0 +1,28 @@
+#ifndef __NVIF_UNPACK_H__
+#define __NVIF_UNPACK_H__
+
+#define nvif_unvers(r,d,s,m) ({ \
+ void **_data = (d); __u32 *_size = (s); int _ret = (r); \
+ if (_ret == -ENOSYS && *_size == sizeof(m)) { \
+ *_data = NULL; \
+ *_size = _ret = 0; \
+ } \
+ _ret; \
+})
+
+#define nvif_unpack(r,d,s,m,vl,vh,x) ({ \
+ void **_data = (d); __u32 *_size = (s); \
+ int _ret = (r), _vl = (vl), _vh = (vh); \
+ if (_ret == -ENOSYS && *_size >= sizeof(m) && \
+ (m).version >= _vl && (m).version <= _vh) { \
+ *_data = (__u8 *)*_data + sizeof(m); \
+ *_size = *_size - sizeof(m); \
+ if (_ret = 0, !(x)) { \
+ _ret = *_size ? -E2BIG : 0; \
+ *_data = NULL; \
+ *_size = 0; \
+ } \
+ } \
+ _ret; \
+})
+#endif