# HG changeset patch
# User lost
# Date 1230958429 0
# Node ID 9bd584bb629617faedcc25023621aa9970376b60
# Parent  538e15927776824d969ae4681480133a4a90ba9c
Added debugging message infrastructure

diff -r 538e15927776 -r 9bd584bb6296 src/lwasm.c
--- a/src/lwasm.c	Sat Jan 03 04:20:49 2009 +0000
+++ b/src/lwasm.c	Sat Jan 03 04:53:49 2009 +0000
@@ -31,6 +31,8 @@
 #include "util.h"
 #include "expr.h"
 
+int debug_level = 0;
+
 int register_error(asmstate_t *as, lwasm_line_t *l, int pass, const char *fmt, ...)
 {
 	lwasm_error_t *e;
@@ -179,5 +181,21 @@
 	st.as = as;
 	st.l = l;
 	
+	debug_message(2, "Evaluate expression: %s", inp);
+	
 	return(lwasm_expr_eval(inp, outp, lwasm_expr_lookup_symbol, &st));
 }
+
+void debug_message(int level, const char *fmt, ...)
+{
+	va_list args;
+	
+	va_start(args, fmt);
+	if (debug_level >= level)
+	{
+		fprintf(stderr, "DEBUG %d: ", level);
+		vfprintf(stderr, fmt, args);
+		fputc('\n', stderr);
+	}
+	va_end(args);
+}
diff -r 538e15927776 -r 9bd584bb6296 src/lwasm.h
--- a/src/lwasm.h	Sat Jan 03 04:20:49 2009 +0000
+++ b/src/lwasm.h	Sat Jan 03 04:53:49 2009 +0000
@@ -82,7 +82,6 @@
 	const char *infile;			// input file
 	const char *outfile;		// output file
 	const char *listfile;		// output listing file
-	int debug;					// debug mode
 	int outformat;				// output format type
 	char **filelist;			// files that have been read
 	int filelistlen;			// number of files in the list
@@ -96,7 +95,10 @@
 #define __lwasm_E__
 #endif
 
+__lwasm_E__ int debug_level;
+
 __lwasm_E__ int register_error(asmstate_t *as, lwasm_line_t *l, int pass, const char *fmt, ...);
+__lwasm_E__ void debug_message(int level, const char *fmt, ...);
 
 __lwasm_E__ void lwasm_emit(asmstate_t *as, lwasm_line_t *l, int b);
 __lwasm_E__ void lwasm_emitop(asmstate_t *as, lwasm_line_t *l, int o);
diff -r 538e15927776 -r 9bd584bb6296 src/main.c
--- a/src/main.c	Sat Jan 03 04:20:49 2009 +0000
+++ b/src/main.c	Sat Jan 03 04:53:49 2009 +0000
@@ -58,7 +58,7 @@
 	
 	case 'd':
 		// debug
-		as -> debug++;
+		debug_level++;
 		break;
 	
 	case 'l':
diff -r 538e15927776 -r 9bd584bb6296 src/parse.c
--- a/src/parse.c	Sat Jan 03 04:20:49 2009 +0000
+++ b/src/parse.c	Sat Jan 03 04:53:49 2009 +0000
@@ -62,13 +62,14 @@
 		l -> sym = sym;
 		// have a symbol; now determine if it is valid and register it
 		// at the current address of the line
+		debug_message(1, "Registering symbol '%s' at %04X", sym, as -> addr);
 		if (lwasm_register_symbol(as, l, sym, as -> addr) < 0)
 			l -> sym = NULL;
 	}
 	else
 	{
 		while (*p && isspace(*p))
-			(*p)++;
+			p++;
 		if (!*p)
 		{
 			as -> context += 1;
@@ -95,6 +96,8 @@
 	memcpy(opc, p, p2 - p);
 	opc[p2 - p] = '\0';
 
+	debug_message(2, "Found operation code: '%s'", opc);
+
 	// skip intervening whitespace if present
 	while (*p2 && isspace(*p2))
 		p2++;