From e4f7baf085f9080e41d12d4a5166e3fde0135da5 Mon Sep 17 00:00:00 2001
From: Tobias Girstmair <t@thi3nkpad.lan>
Date: Tue, 13 Nov 2018 01:31:03 +0100
Subject: [PATCH] new version

---
 fakeasm.h | 3 ++-
 foo.c     | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/fakeasm.h b/fakeasm.h
index a5b0e8d..c000612 100644
--- a/fakeasm.h
+++ b/fakeasm.h
@@ -24,7 +24,8 @@
 int zero = 0; //status register zero bit
 #define TST(x)    if(x==0)zero=1;else zero=0; //WARN: not a complete TST mockup
 #define BREQ(l)   if(zero) goto l;
-int carry = 0; //status register carry bit
+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;
 #define ROR(x)	asmtmp = x&0x1; x >>= 1; x |= carry<<7; carry = asmtmp;
+#define NEG(x)	x *= -1;
diff --git a/foo.c b/foo.c
index dc9d62e..c8eacff 100644
--- a/foo.c
+++ b/foo.c
@@ -100,7 +100,9 @@ int main(void) {
 		#define tmp o
 		x = (x*0x33)>>8;
 		#undef tmp
-		t = n - (((i3&0x01)<<14 | i2<<6 | i1>>2) % 3);
+		t = ((i3&0x01)<<14 | i2<<6 | i1>>2) % 3;
+		SUB	(t, n)
+		NEG	(t)
 		SUBI	(t, -8)
 		LDI	(o, 9)
 		RCALL	g();
-- 
2.39.3