diff options
Diffstat (limited to 'src/kernel/mem/seg.h')
| -rw-r--r-- | src/kernel/mem/seg.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/src/kernel/mem/seg.h b/src/kernel/mem/seg.h index 26664dc..d37ba59 100644 --- a/src/kernel/mem/seg.h +++ b/src/kernel/mem/seg.h @@ -1,6 +1,9 @@ #ifndef DEF_SEG_H #define DEF_SEG_H +/* Segments are pieces of usable memory in a process' address space. + They have nothing to do with GDT segments, they are created over paging. */ + #include "paging.h" struct segment_map; @@ -8,6 +11,7 @@ struct segment { void* seg_data; int mappings; + // these 4 functions must not be used directly by anyone struct segment_map* (*map)(struct segment* seg, struct page_directory* pagedir, size_t offset); void (*unmap)(struct segment_map*); void (*delete)(struct segment* seg); @@ -21,8 +25,9 @@ struct segment_map { struct segment_map *next; }; -//parameter offset in seg_map needs not be used +//parameter offset in seg_map doesn't need to be used struct segment_map *seg_map(struct segment* seg, struct page_directory* pagedir, size_t offset); +/* When unmapping a segment, the segment is deleted if it is not mapped anywhere anymore. */ void seg_unmap(struct segment_map* map); /// ************************************* SIMPLESEG stuff ***************** @@ -32,11 +37,7 @@ struct simpleseg { 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, size_t offset); -void simpleseg_unmap(struct segment_map*); -void simpleseg_delete(struct segment *seg); -int simpleseg_handleFault(struct segment_map* map, size_t addr, int write); +struct segment* simpleseg_make(size_t start, size_t len, int writable); int simpleseg_resize(struct segment_map *map, size_t len); #endif |