1 files changed, 106 insertions, 0 deletions
diff --git a/libc/stdlib/malloc-simple/alloc.c b/libc/stdlib/malloc-simple/alloc.c
new file mode 100644
index 000000000..cf4835c97
--- /dev/null
+++ b/libc/stdlib/malloc-simple/alloc.c
@@ -0,0 +1,106 @@
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+
+#ifdef L_calloc_dbg
+
+void *calloc_dbg(size_t num, size_t size, char *function, char *file,
+				 int line)
+{
+	void *ptr;
+
+	fprintf(stderr, "calloc of %d bytes at %s @%s:%d = ", num * size,
+			function, file, line);
+	ptr = calloc(num, size);
+	fprintf(stderr, "%p\n", ptr);
+	return ptr;
+}
+
+#endif
+
+#ifdef L_malloc_dbg
+
+void *malloc_dbg(size_t len, char *function, char *file, int line)
+{
+	void *result;
+
+	fprintf(stderr, "malloc of %d bytes at %s @%s:%d = ", len, function,
+			file, line);
+	result = malloc(len);
+	fprintf(stderr, "%p\n", result);
+	return result;
+}
+
+#endif
+
+#ifdef L_free_dbg
+
+void free_dbg(void *ptr, char *function, char *file, int line)
+{
+	fprintf(stderr, "free of %p at %s @%s:%d\n", ptr, function, file,
+			line);
+	free(ptr);
+}
+
+#endif
+
+
+#ifdef L_calloc
+
+void *calloc(size_t num, size_t size)
+{
+	void *ptr = malloc(num * size);
+
+	if (ptr)
+		memset(ptr, 0, num * size);
+	return ptr;
+}
+
+#endif
+
+#ifdef L_malloc
+
+void *malloc(size_t len)
+{
+	void *result = mmap((void *) 0, len, PROT_READ | PROT_WRITE,
+						//MAP_SHARED | MAP_ANONYMOUS, 0, 0);
+						MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
+
+	if (result == (void *) -1)
+		return 0;
+
+	return result;
+}
+
+#endif
+
+#ifdef L_free
+
+void free(void *ptr)
+{
+	munmap(ptr, 0);
+}
+
+#endif
+
+#ifdef L_realloc
+
+void *realloc(void *ptr, size_t size)
+{
+	void *newptr = NULL;
+
+	if (size > 0) {
+		newptr = malloc(size);
+		if (newptr && ptr)
+			memcpy(newptr, ptr, size);
+	}
+	if (ptr)
+		free(ptr);
+	return newptr;
+}
+
+#endif