- Initial checkin of the freebios2 tree

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@784 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 52 insertions, 0 deletions

diff --git a/src/lib/malloc.c b/src/lib/malloc.c
new file mode 100644
index 000000000000..bd403e47e98c
--- /dev/null
+++ b/src/lib/malloc.c
@@ -0,0 +1,52 @@
+#include <stdlib.h>
+#include <console/console.h>
+
+#if 0
+#define MALLOCDBG(x)
+#else
+#define MALLOCDBG(x) printk_spew x
+#endif
+extern unsigned char _heap, _eheap;
+static size_t free_mem_ptr = (size_t)&_heap;		/* Start of heap */
+static size_t free_mem_end_ptr = (size_t)&_eheap;	/* End of heap */
+
+
+void malloc_mark(malloc_mark_t *place)
+{
+	*place = free_mem_ptr;
+	printk_spew("malloc_mark 0x%08lx\n", (unsigned long)free_mem_ptr);
+}
+
+void malloc_release(malloc_mark_t *ptr)
+{
+	free_mem_ptr = *ptr;
+	printk_spew("malloc_release 0x%08lx\n", (unsigned long)free_mem_ptr);
+}
+
+void *malloc(size_t size)
+{
+	void *p;
+
+	MALLOCDBG(("%s Enter, size %d, free_mem_ptr %p\n", __FUNCTION__, size, free_mem_ptr));
+	if (size < 0)
+		die("Error! malloc: Size < 0");
+	if (free_mem_ptr <= 0)
+		die("Error! malloc: Free_mem_ptr <= 0");
+
+	free_mem_ptr = (free_mem_ptr + 3) & ~3;	/* Align */
+
+	p = (void *) free_mem_ptr;
+	free_mem_ptr += size;
+
+	if (free_mem_ptr >= free_mem_end_ptr)
+		die("Error! malloc: Free_mem_ptr >= free_mem_end_ptr");
+
+	MALLOCDBG(("malloc 0x%08lx\n", (unsigned long)p));
+
+	return p;
+}
+
+void free(void *where)
+{
+	/* Don't care */
+}