From e2be3b5fec966fac0edd30f6d32e5afd25eda084 Mon Sep 17 00:00:00 2001
From: Tobias Girstmair <t@thi3nkpad.lan>
Date: Sat, 17 Nov 2018 21:12:26 +0100
Subject: [PATCH] new version

---
 fakeasm.h |  2 ++
 foo.c     | 20 ++++++++++----------
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/fakeasm.h b/fakeasm.h
index de0898f..0e31859 100644
--- a/fakeasm.h
+++ b/fakeasm.h
@@ -15,6 +15,7 @@
 #define SUB(x,y)  x -= y; //TODO: carry
 #define SUBI(x,n) x -= (u8)n; //TODO: carry
 #define INC(x)    x++; //WARN: does not set carry
+#define DEC(x)    x--; sr_zero=!x;
 #define MOV(x,y)  x = y;
 #define LDI(x,n)  x = n;
 #define SBRC(x,b) if (x & 1<<b) //skip if cleared => do if set
@@ -25,6 +26,7 @@
 int sr_zero = 0; //status register zero bit
 #define TST(x)    if(x==0)sr_zero=1;else sr_zero=0; //WARN: not a complete TST mockup
 #define BREQ(l)   if(sr_zero) goto l;
+#define BRNE(l)   if(!sr_zero) goto l;
 int carry = 0; //status register carry bit //WARN: not respected by all mocked instructions
 int asmtmp = 0;
 #define ROL(x)	asmtmp = x>>7; x <<= 1; x |= carry; carry = asmtmp;
diff --git a/foo.c b/foo.c
index 6333bf1..45e0261 100644
--- a/foo.c
+++ b/foo.c
@@ -80,16 +80,16 @@ void g(void) {
 	CLR	(a1)
 	LDI	(loop, 8)
 	mul:
-		SBRS	(t, 0)
-		RJMP	(skip2)
-		ADD	(a1, i0)
-		ADC	(a2, i1, carry)
-		skip2:
-		LSR	(a2)
-		ROR	(a1)
-		ROR	(t)
-		loop--;
-		if (loop) goto mul;
+	SBRS	(t, 0)
+	RJMP	(skip2)
+	ADD	(a1, i0)
+	ADC	(a2, i1, carry)
+	skip2:
+	LSR	(a2)
+	ROR	(a1)
+	ROR	(t)
+	DEC	(loop)
+	BRNE	(mul)
 	MOV	(t, a1)
 	#undef a0
 	#undef a1
-- 
2.39.3