Start work on syscalls, advanced tasking, segmentation

1 files changed, 40 insertions, 0 deletions

diff --git a/src/stem/mem/seg.h b/src/stem/mem/seg.h
new file mode 100644
index 0000000..022d38e
--- /dev/null
+++ b/src/stem/mem/seg.h
@@ -0,0 +1,40 @@
+#ifndef DEF_SEG_H
+#define DEF_SEG_H
+
+#include "paging.h"
+
+struct segment_map;
+struct segment {
+	void* seg_data;
+	int mappings;
+
+	struct segment_map* (*map)(struct segment* seg, struct page_directory* pagedir);
+	void (*unmap)(struct segment_map*);
+	void (*delete)(struct segment* seg);
+	int (*handle_fault)(struct segment_map* map, size_t addr, int write);	//0 if ok, 1 if segfault
+};
+
+struct segment_map {
+	struct segment* seg;
+	struct page_directory* pagedir;
+	size_t start, len;
+	struct segment_map *next;
+};
+
+struct segment_map *seg_map(struct segment* seg, struct page_directory* pagedir);
+void seg_unmap(struct segment_map* map);
+
+/// *************************************     SIMPLESEG stuff *****************
+
+struct simpleseg {
+	int writable;
+	size_t start, len;
+};
+
+struct segment* simpleseg_make(size_t start, size_t len, int writable); 
+struct segment_map* simpleseg_map(struct segment* seg, struct page_directory* pagedir);
+void simpleseg_unmap(struct segment_map*);
+void simpleseg_delete(struct segment *seg);
+int simpleseg_handleFault(struct segment_map* map, size_t addr, int write);
+
+#endif