From f67c0b7e20ef0816a2d9047fd20346e3ede98b75 Mon Sep 17 00:00:00 2001 From: Alex Auvolat Date: Fri, 13 Feb 2015 17:23:29 +0100 Subject: Prepare for user memory management and usermode code --- src/kernel/include/paging.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'src/kernel/include/paging.h') diff --git a/src/kernel/include/paging.h b/src/kernel/include/paging.h index d42ec52..56fa7fa 100644 --- a/src/kernel/include/paging.h +++ b/src/kernel/include/paging.h @@ -3,10 +3,16 @@ #include #include +// Bits in the error code for page fault +#define PF_PRESENT_BIT (1<<0) +#define PF_WRITE_BIT (1<<1) +#define PF_USER_BIT (1<<2) +#define PF_RSVD_WRITE_BIT (1<<3) +#define PF_OPFETCH_BIT (1<<4) + struct page_directory; typedef struct page_directory pagedir_t; - void paging_setup(void* kernel_data_end); pagedir_t *get_current_pagedir(); -- cgit v1.2.3