kernel: add basic modules: arch, mem, rt

1 files changed, 39 insertions, 0 deletions

diff --git a/mem/framer.h b/mem/framer.h
new file mode 100644
index 0000000..6d7034b
--- /dev/null
+++ b/mem/framer.h
@@ -0,0 +1,39 @@
+#ifndef MEM_FRAMER_H
+#define MEM_FRAMER_H
+
+#include <rt.h>
+
+#include "allocator.h"
+
+typedef struct mem_framer_freed {
+	struct mem_framer_freed *next;
+} MemFramerFreed;
+
+/* Allocator for frames: aligned regions of memory of same size */
+typedef struct mem_framer {
+	MemAllocator allocator;
+
+	/* The next frame to be given off to the caller
+	   in case the freelist is empty */
+	usize next;
+
+	/* The end of the region covered by the memory allocator */
+	usize end;
+
+	/* The address of the last frame that has been added in
+	   the freelist
+	   NOTE: the freelist is a singly-linked list comprising
+	         all frames that have been previously allocated
+			 and then freed */ 
+	MemFramerFreed *free;
+
+	/* The size of a frame. This value also defines the alignment
+	   that the frames must respect */
+	uint blksz;
+} MemFramer;
+
+MemFramer *mem_framer_install(void *addr, usize end, uint blksz);
+void *mem_framer_alloc(MemAllocator *self, usize n);
+void mem_framer_free(MemAllocator *self, void *ptr);
+
+#endif
\ No newline at end of file