commit 5c65abd0607ea694a65fee66a05283d1021ea35e
from: Benjamin Stürz <benni@stuerz.xyz>
date: Tue Jun 11 02:19:28 2024 UTC

fix M instructions

commit - 556cf3fcc326710d1d7db9f8340568349fe04108
commit + 5c65abd0607ea694a65fee66a05283d1021ea35e
blob - 4f4a708a8a59aae419e3804e0e2ad6537725d0cb
blob + c330c80c729c9585f20ce981f16a40a4d8bcb6b8
--- examples/test.c
+++ examples/test.c
@@ -21,6 +21,11 @@ inline static void *sys_brk (void *ptr)
 	return a0;
 }
 
+unsigned mul(unsigned a, unsigned b)
+{
+	return a / b;
+}
+
 int main (int argc, char *argv[]) {
 	FILE *in, *out;
 	int ch, *ptr;
@@ -52,5 +57,7 @@ int main (int argc, char *argv[]) {
 
 	fclose (in);
 
+	printf ("Result: %u\n", mul (3, 2));
+
 	return 0;
 }
blob - 1097223b6bee26ebd2770d2554da81f7992465a1
blob + 7f88c1790ad9c4ed9776a28bab20fdbea8ae19be
--- src/cpu.c
+++ src/cpu.c
@@ -422,19 +422,19 @@ void cpu_exec (u32 instr)
 			c = extend (a * b);
 			alu ("mulw");
 			break;
-		case 0b000001'001: // divw
+		case 0b000001'100: // divw
 			c = extend (b != 0 ? (i32)a / (i32)b : -1);
 			alu ("divw");
 			break;
-		case 0b000001'010: // divuw
+		case 0b000001'101: // divuw
 			c = extend (b != 0 ? (u32)a / (u32)b : -1);
 			alu ("divuw");
 			break;
-		case 0b000001'011: // remw
+		case 0b000001'110: // remw
 			c = extend (b != 0 ? (i32)a % (i32)b : (i32)a);
 			alu ("divw");
 			break;
-		case 0b000001'100: // remuw
+		case 0b000001'111: // remuw
 			c = extend (b != 0 ? (u32)a % (u32)b : (u32)b);
 			alu ("divuw");
 			break;