kern

diff src/vm-asm.S @ 55:88a6c4e192f9

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Fixed most important task switching bugs. Now it seems that I can switch in and out of user space reliably.
author John Tsiombikas <nuclear@member.fsf.org>
date Mon, 15 Aug 2011 04:03:39 +0300
parents 387078ef5c0d
children
line diff
     1.1 --- a/src/vm-asm.S	Sun Aug 14 16:57:23 2011 +0300
     1.2 +++ b/src/vm-asm.S	Mon Aug 15 04:03:39 2011 +0300
     1.3 @@ -34,6 +34,13 @@
     1.4  	movl %eax, %cr3
     1.5  	ret
     1.6  
     1.7 +/* get_pgdir_addr(void)
     1.8 + * returns the physical address of the page table directory (cr3) */
     1.9 +	.globl get_pgdir_addr
    1.10 +get_pgdir_addr:
    1.11 +	movl %cr3, %eax
    1.12 +	ret
    1.13 +
    1.14  /* flush_tlb(void)
    1.15   * invalidates the whole TLB. entries for pages marked as global
    1.16   * are unaffected */