From dd0e4224c93c1b94b7b9fd06e9ab08105e19845f Mon Sep 17 00:00:00 2001
From: Duncan Smith
Date: Fri, 12 Nov 2010 22:34:36 -0800
Subject: Added support for local labels in opcodes

I tried to use A68k's local label support, but I believe it was
broken.  Now I can use it, finally. :)
---
 opcodes.asm.m4 | 4 ++--
 opcodes.inc.m4 | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/opcodes.asm.m4 b/opcodes.asm.m4
index 9f3a3fe..9e22715 100644
--- a/opcodes.asm.m4
+++ b/opcodes.asm.m4
@@ -332,14 +332,14 @@ OPCODE(10,`
 	HOLD_INTS
 	LOHI	ebc
 	subq.b	#1,ebc
-	beq.s	end_10	; slooooow
+	beq.s	local(end)	; slooooow
 	FETCHBI	d1
 	move.l	epc,a0
 	bsr	underef
 	add.w	d1,d0		; ??? Can I avoid underef/deref cycle?
 	bsr	deref
 	move.l	a0,epc
-end_10:
+local(end):
 	HILO	ebc
 	CONTINUE_INTS
 	')			;nok
diff --git a/opcodes.inc.m4 b/opcodes.inc.m4
index d7343e8..cbaafb9 100644
--- a/opcodes.inc.m4
+++ b/opcodes.inc.m4
@@ -2,6 +2,10 @@ dnl # change the comments to match the assembler.  Prevents/reduces
 dnl # confusion, since m4 likes to use ' as a quoting character.
 changecom(;)dnl
 define(`OPCODE',`	START
+dnl # This little bit of trickery lets me define a local label.
+dnl # Calling local(end) inside of OPCODE(10, ...) will expand to
+dnl # end_10, and is undefined everywhere else.
+define(`local',$`'1_``$1'')dnl
 `emu_op_'$1`:'
 $2
 	TIME	$3
-- 
cgit v1.2.3