Setup mem pointers in memlist.c/.h.

anotherplan.c

@@ -6,6 +6,7 @@
 
 enum {
 	framerate = 60,
+	framems = 20,
 	Kdel = 0x7f
 };
 
@@ -39,7 +40,6 @@ void main(void)
 
 	int child = rfork(RFPROC|RFMEM);
 	if (child) {
-		vlong framems = 1000LL / framerate;
 		vlong startms = nsec()/1000000LL;
 		for(;;) {
 			changeState();

anotherplan_tests.c

@@ -4,6 +4,20 @@
 
 void main(void)
 {
+	/* setup */
+	allocmemblock();
+	print("alloc'd mem buffer:\n");
+	printmemptrs();
+	print("loading mem list:\n");
 	loadmemlist("assets/MEMLIST.BIN");
+
+	/* run */
+	print("\nrunning!\n\n");
+
+	/* teardown */
+	freememblock();
+	print("freed mem buffer:\n");
+	printmemptrs();
+
 	exits(nil);
 }

memlist.c

@@ -64,4 +64,36 @@ loadmemlist(char *filename)
 		close(fd);
 	}
 	free(bankmap);
-}
+}
+
+void
+allocmemblock(void)
+{
+	_memPtrStart = malloc(MEM_BLOCK_SIZE);
+	_scriptBakPtr = _scriptCurPtr = _memPtrStart;
+	_vidBakPtr = _vidCurPtr = _memPtrStart + MEM_BLOCK_SIZE - 0x800 * 16;
+	if ( _memPtrStart == nil ) {
+		exits("could not alloc mem block.");
+	}
+}
+
+void
+freememblock(void)
+{
+	if ( _memPtrStart != nil ) {
+		free(_memPtrStart);
+	}
+	_memPtrStart = nil;
+	_scriptBakPtr = _scriptCurPtr = nil;
+	_vidBakPtr = _vidCurPtr = nil;
+}
+
+void
+printmemptrs(void)
+{
+	print("_memPtrStart:  0x%08p\n", _memPtrStart);
+	print("_scriptBakPtr: 0x%08p\n", _scriptBakPtr);
+	print("_scriptCurPtr: 0x%08p\n", _scriptCurPtr);
+	print("_vidBakPtr:    0x%08p\n", _vidBakPtr);
+	print("_vidCurPtr:    0x%08p\n", _vidCurPtr);
+}

memlist.h

@@ -1,6 +1,10 @@
 #ifndef MEMLIST_H
 #define MEMLIST_H
 
+enum {
+	MEM_BLOCK_SIZE = 600 * 1024, /* 600 kB */
+};
+
 typedef enum AssetState_t {
 	ASSET_NOT_NEEDED = 0,
 	ASSET_LOADED     = 1,
@@ -28,5 +32,11 @@ typedef struct Asset_t {
 	ushort     length;
 } Asset;
 
+uchar *_memPtrStart, *_scriptBakPtr, *_scriptCurPtr, *_vidBakPtr, *_vidCurPtr = nil;
+
 void loadmemlist(char *filename);
+void allocmemblock(void);
+void freememblock(void);
+void printmemptrs(void);
+
 #endif /* MEMLIST_H */