mapi: Add and use entry_get_public.

Given a dispatch slot, entry_get_public returns the address of the
corresponding public entry point.  There may be more than one of them.
But since they are all equivalent, it is fine to return any one of them.

With entry_get_public, the address of any public entry point can be
calculated at runtime when an assembly dispatcher is used.  There is no
need to have a mapping table in such case.  This omits the unnecessary
relocations from the binary.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/mapi/mapi/entry.c b/src/mapi/mapi/entry.c
index 1f84ad910b..69b6134bd2 100644
--- a/src/mapi/mapi/entry.c
+++ b/src/mapi/mapi/entry.c
@@ -42,6 +42,8 @@
 #include "u_current.h"
 
 /* C version of the public entries */
+#define MAPI_TMP_DEFINES
+#define MAPI_TMP_PUBLIC_DECLARES
 #define MAPI_TMP_PUBLIC_ENTRIES
 #include "mapi_tmp.h"
 
@@ -51,6 +53,13 @@ entry_patch_public(void)
 }
 
 mapi_func
+entry_get_public(int slot)
+{
+   /* pubic_entries are defined by MAPI_TMP_PUBLIC_ENTRIES */
+   return public_entries[slot];
+}
+
+mapi_func
 entry_generate(int slot)
 {
    return NULL;