RFC [PATCH 1/2] Update include/plugin-api.h

["H.J. Lu" <hjl.tools@gmail.com>]

From: Martin Liska <mliska@suse.cz>

2020-03-12  Martin Liska  <mliska@suse.cz>

	PR binutils/25640
	* plugin-api.h (struct ld_plugin_symbol): Split
	int def into 4 char fields.
	(enum ld_plugin_symbol_type): New.
	(enum ld_plugin_symbol_section_flags): New.
	(enum ld_plugin_tag): Add LDPT_ADD_SYMBOLS_V2 and
	LDPT_GET_SYMBOLS_V4.
---
 include/plugin-api.h | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/include/plugin-api.h b/include/plugin-api.h
index 09e1202df0..88676a63e5 100644
--- a/include/plugin-api.h
+++ b/include/plugin-api.h
@@ -87,7 +87,19 @@ struct ld_plugin_symbol
 {
   char *name;
   char *version;
-  int def;
+  /* This is for compatibility with older ABIs.  The older ABI defined
+     only 'def' field.  */
+#ifdef __BIG_ENDIAN__
+  char unused;
+  char section_flags;
+  char symbol_type;
+  char def;
+#else
+  char def;
+  char symbol_type;
+  char section_flags;
+  char unused;
+#endif
   int visibility;
   uint64_t size;
   char *comdat_key;
@@ -123,6 +135,20 @@ enum ld_plugin_symbol_visibility
   LDPV_HIDDEN
 };
 
+/* The type of the symbol.  */
+
+enum ld_plugin_symbol_type
+{
+  LDST_UNKNOWN,
+  LDST_FUNCTION,
+  LDST_VARIABLE,
+};
+
+enum ld_plugin_symbol_section_flags
+{
+  LDSSS_BSS = 1
+};
+
 /* How a symbol is resolved.  */
 
 enum ld_plugin_symbol_resolution
@@ -431,7 +457,9 @@ enum ld_plugin_tag
   LDPT_GET_INPUT_SECTION_ALIGNMENT = 29,
   LDPT_GET_INPUT_SECTION_SIZE = 30,
   LDPT_REGISTER_NEW_INPUT_HOOK = 31,
-  LDPT_GET_WRAP_SYMBOLS = 32
+  LDPT_GET_WRAP_SYMBOLS = 32,
+  LDPT_ADD_SYMBOLS_V2 = 33,
+  LDPT_GET_SYMBOLS_V4 = 34,
 };
 
 /* The plugin transfer vector.  */
-- 
2.25.1