[U-Boot] [PATCH v4 1/9] dm: linker_lists: Add a way to declare multiple objects

Simon Glass
2014-10-02T01:57:20Z

The existing ll_entry_declare() permits a single element of the list to
be added to a linker list. Sometimes we want to add several objects at
once. To avoid lots of messy declarations, add a macro to support this.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

Changes in v4: None
Changes in v3: None
Changes in v2: None

include/linker_lists.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

diff --git a/include/linker_lists.h b/include/linker_lists.h
index 507d61b..6e568bc 100644
--- a/include/linker_lists.h
+++ b/include/linker_lists.h
@@ -141,6 +141,27 @@
section(".u_boot_list_2_"#_list"_2_"#_name)))

/**
+ * ll_entry_declare_list() - Declare a list of link-generated array entries
+ * @_type: Data type of each entry
+ * @_name: Name of the entry
+ * @_list: name of the list. Should contain only characters allowed
+ * in a C variable name!
+ *
+ * This is like ll_entry_declare() but creates multiple entries. It should
+ * be assigned to an array.
+ *
+ * ll_entry_declare_list(struct my_sub_cmd, my_sub_cmd, cmd_sub, cmd.sub) = {
+ * { .x = 3, .y = 4 },
+ * { .x = 8, .y = 2 },
+ * { .x = 1, .y = 7 }
+ * };
+ */
+#define ll_entry_declare_list(_type, _name, _list) \
+ _type _u_boot_list_2_##_list##_2_##_name[] __aligned(4) \
+ __attribute__((unused, \
+ section(".u_boot_list_2_"#_list"_2_"#_name)))
+
+/**
* We need a 0-byte-size type for iterator symbols, and the compiler
* does not allow defining objects of C type 'void'. Using an empty
* struct is allowed by the compiler, but causes gcc versions 4.4 and
--
2.1.0.rc2.206.gedb03e5