From 7a4218133b565308dfe54bfe993951ad2103633e Mon Sep 17 00:00:00 2001
From: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Mon, 2 May 2022 19:13:08 +0200
Subject: interface: Support register sets

---
 rtemsspec/interface.py | 43 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 40 insertions(+), 3 deletions(-)

(limited to 'rtemsspec/interface.py')

diff --git a/rtemsspec/interface.py b/rtemsspec/interface.py
index 9c25e729..1f951b40 100644
--- a/rtemsspec/interface.py
+++ b/rtemsspec/interface.py
@@ -394,13 +394,30 @@ class Node:
                     assert ctx.sizes[index] == ctx.regs[name]["size"] * count
                 ctx.reg_counts[alias] += 1
 
-    def _add_register_members(self, ctx: _RegisterMemberContext) -> None:
-        default_padding = min(min(ctx.sizes.values()), 8)
+    def _add_register_defines(self, ctx: _RegisterMemberContext) -> None:
+        with self.content.doxygen_block():
+            self.content.add("@name Registers")
+            self.content.add_brief_description(
+                self.substitute_text(self.item["brief"]))
+            self.content.doxyfy(self.substitute_text(self.item["description"]))
+            self.content.add("@{")
+        for index, member in enumerate(self.item["definition"]):
+            self.content.add(
+                _add_definition(
+                    self, self.item, f"definition[{index}]", member,
+                    functools.partial(Node._get_register_define_definition,
+                                      ctx=ctx,
+                                      offset=member["offset"])))
+        self.content.add_close_group()
+
+    def _add_register_struct(self, ctx: _RegisterMemberContext,
+                             size: int) -> None:
         with self.content.doxygen_block():
             self.content.add_brief_description(
                 self.substitute_text(self.item["brief"]))
             self.content.doxyfy(self.substitute_text(self.item["description"]))
         self.content.append(f"typedef struct {self.item['name']} {{")
+        default_padding = min(min(ctx.sizes.values()), 8)
         offset = 0
         with self.content.indent():
             for index, member in enumerate(self.item["definition"]):
@@ -413,11 +430,17 @@ class Node:
                         functools.partial(Node._get_register_member_definition,
                                           ctx=ctx)))
                 offset = member_offset + ctx.sizes[index]
-            size = self.item["register-block-size"]
             assert offset <= size
             _add_register_padding(self.content, size, offset, default_padding)
         self.content.add(f"}} {self.item['name']};")
 
+    def _add_register_members(self, ctx: _RegisterMemberContext) -> None:
+        size = self.item["register-block-size"]
+        if size is None:
+            self._add_register_defines(ctx)
+        else:
+            self._add_register_struct(ctx, size)
+
     def generate_register_block(self) -> None:
         """ Generates a register block. """
         self.header_file.add_includes(self.item.map("/c/if/uint32_t"))
@@ -569,6 +592,20 @@ class Node:
                 ])
         return lines
 
+    def _get_register_define_definition(self, item: Item, definition: Any,
+                                        ctx: _RegisterMemberContext,
+                                        offset: int) -> Lines:
+        # pylint: disable=no-self-use
+        name, alias = _get_register_name(definition)
+        count = definition["count"]
+        assert count == 1
+        content = CContent()
+        with content.doxygen_block():
+            content.add(f"@brief See @ref {ctx.regs[name]['group']}.")
+        content.append(
+            f"#define {item['name'].upper()}_{alias.upper()} {offset:#x}")
+        return content.lines
+
     def _get_register_member_definition(self, _item: Item, definition: Any,
                                         ctx: _RegisterMemberContext) -> Lines:
         # pylint: disable=no-self-use
-- 
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