CAR: added stack operations, call, ret, jmp and some other random stuff

misc.c

@@ -0,0 +1,49 @@
+/*
+ * Source file for miscellaneous operations.
+ * 
+ * CAR (Cool ARM Ripoff) copyright (c) 2026 David J Goeke. All rights reserved.
+ * Unauthorized (re)distribution is prohibited.
+*/
+
+#include "include/defs.h"
+
+
+DEFINE_OP(nop)
+{
+	OP_RETURN_NORMAL
+}
+
+DEFINE_OP(call)
+{
+	misc_instruction_t i = convert_raw2misc(ri);
+	
+	_push(state->pc + 1, state);
+	
+	uint32_t addr = (uint32_t) (state->pc + (int32_t) i.imm);
+	
+	state->pc = addr;
+	
+	OP_RETURN_NO_INC_PC
+}
+
+DEFINE_OP(ret)
+{
+	uint32_t r_addr;
+	
+	_pop(&r_addr, state);
+	
+	state->pc = r_addr;
+	
+	OP_RETURN_NO_INC_PC
+}
+
+DEFINE_OP(jmp)
+{
+	misc_instruction_t i = convert_raw2misc(ri);
+	
+	uint32_t addr = (uint32_t) (state->pc + (int32_t) i.imm);
+	
+	state->pc = addr;
+	
+	OP_RETURN_NO_INC_PC
+}