Add WIP coverage program

.gitignore

@@ -1,6 +1,6 @@
 baserom.gb
 *.o
 tetris.gb
-tools/scan_includes
 tetris.sym
+tetris.map
 *.pyc

Makefile

@@ -2,7 +2,7 @@ ASMFILES:= $(wildcard src/*.asm)
 OBJFILES:= $(ASMFILES:.asm=.o)
 
 tetris.gb: $(OBJFILES)
-	rgblink -O baserom.gb -o tetris.gb -n tetris.sym -d $(OBJFILES)
+	rgblink -O baserom.gb -o tetris.gb -m tetris.map -n tetris.sym -d $(OBJFILES)
 	rgbfix -t "TETRIS" -r 0x00 -n 0x01 -l 0x01 tetris.gb
 	tools/symsort
 
@@ -13,6 +13,6 @@ tetris.gb: $(OBJFILES)
 verify:
 	@md5sum -c tetris.md5
 clean:
-	rm tetris.gb tetris.sym $(OBJFILES)
+	rm tetris.gb tetris.sym tetris.map $(OBJFILES)
 symwatch:
 	tools/symwatch

tools/coverage

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+import re
+
+SECTION_LINE = re.compile(r'SECTION: \$([0-9A-F]{4,4})-\$([0-9A-F]{4,4}) \(\$([0-9A-F]{4,4}) bytes\) \["(.+)"\]')
+
+MAP_FILE = "tetris.map"
+
+sections = []
+with open(MAP_FILE) as f:
+	sections = [l.strip() for l in f if l.strip().startswith("SECTION")]
+
+coverage = [False for x in range(32768)]
+def mark(begin,end):
+	global coverage
+	coverage[begin:end] = [True for x in range(end-begin)]
+
+for section in sections:
+	g = SECTION_LINE.match(section).groups()
+	if int(g[1],16)>0x8000:
+		continue
+	print("Section \"{}\" is from ${} to ${}".format(g[3],g[0],g[1]))
+	mark(int(g[0],16),int(g[1],16))
+
+print("{:.2%} coverage".format(len([x for x in coverage if x])/32768.))