From 4df6f37a27c4eec64a8337e2237e738bd2ba63b4 Mon Sep 17 00:00:00 2001
From: John van Groningen
Date: Wed, 6 Dec 2006 12:30:56 +0000
Subject: add tstmbit_ macro

---
 macho/pstartup.a | 15 +++++++++++++++
 pstartup.a       |  9 +++++++++
 2 files changed, 24 insertions(+)

diff --git a/macho/pstartup.a b/macho/pstartup.a
index 319891e..7512861 100644
--- a/macho/pstartup.a
+++ b/macho/pstartup.a
@@ -74,6 +74,21 @@ LINUX	=	0
 ;	rlwnm.	&bit,&byte,&bit_n_in_byte,24,24	
 ;	.endmacro
 
+	.macro	tstmbit_
+	rlwinm	$2,$1,32-$5-3,3+$5,31
+	lbzx	$4,$0,$2
+	rlwinm	$1,$1,32-$5,29,31
+	rlwnm.	$3,$4,$1,24,24	
+	.endmacro
+
+; same as tstmbit, but modifies bit_n register
+;	&vector 0,&bit_n 1,&byte_offset 2,&bit 3,&byte 4,&shift 5
+;	rlwinm	&byte_offset,&bit_n,32-&shift-3,3+&shift,31
+;	lbzx	&byte,&vector,&byte_offset
+;	rlwinm	&bit_n,&bit_n,32-&shift,29,31
+;	rlwnm.	&bit,&byte,&bit_n,24,24	
+;	endm
+
 	.macro	clrmbit
 	rlwinm	$2,$1,32-$6-3,3+$6,31
 	lbzx	$4,$0,$2
diff --git a/pstartup.a b/pstartup.a
index bd24ab4..7ff007c 100644
--- a/pstartup.a
+++ b/pstartup.a
@@ -23,6 +23,15 @@
 	rlwnm.	&bit,&byte,&bit_n_in_byte,24,24	
 	endm
 
+	macro
+; same as tstmbit, but modifies bit_n register
+	tstmbit_ &vector,&bit_n,&byte_offset,&bit,&byte,&shift
+	rlwinm	&byte_offset,&bit_n,32-&shift-3,3+&shift,31
+	lbzx	&byte,&vector,&byte_offset
+	rlwinm	&bit_n,&bit_n,32-&shift,29,31
+	rlwnm.	&bit,&byte,&bit_n,24,24	
+	endm
+
 	macro
 	clrmbit	&vector,&bit_n,&byte_offset,&bit,&byte,&scratch,&shift
 	rlwinm	&byte_offset,&bit_n,32-&shift-3,3+&shift,31
-- 
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