diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog
index 79bc3cc7cb..9adf7be225 100644
--- a/include/opcode/ChangeLog
+++ b/include/opcode/ChangeLog
@@ -1,3 +1,7 @@
+Sat May  8 23:27:35 1999  Richard Henderson  <rth@cygnus.com>
+
+	* ppc.h (PPC_OPCODE_64_BRIDGE): New.
+
 1999-04-14  Doug Evans  <devans@casey.cygnus.com>
 
 	* cgen.h (CGEN_ATTR): Delete member num_nonbools.
diff --git a/include/opcode/ppc.h b/include/opcode/ppc.h
index a9e3b24ab3..974f0dfa56 100644
--- a/include/opcode/ppc.h
+++ b/include/opcode/ppc.h
@@ -85,6 +85,9 @@ extern const int powerpc_num_opcodes;
    for the assembler's -many option, and it eliminates duplicates).  */
 #define PPC_OPCODE_ANY (0200)
 
+/* Opcode is supported as part of the 64-bit bridge.  */
+#define PPC_OPCODE_64_BRIDGE (0400)
+
 /* A macro to extract the major opcode from an instruction.  */
 #define PPC_OP(i) (((i) >> 26) & 0x3f)