From: Ben Gras Date: Thu, 23 Apr 2009 15:21:03 +0000 (+0000) Subject: some more vm bits. X-Git-Tag: v3.1.4~70 X-Git-Url: http://zhaoyanbai.com/repos/zlib_tech.html?a=commitdiff_plain;h=3b3e3b36c2862f00e66e160816b881392bd83268;p=minix.git some more vm bits. --- diff --git a/include/sys/vm_i386.h b/include/sys/vm_i386.h index dcea95b25..8319511b2 100644 --- a/include/sys/vm_i386.h +++ b/include/sys/vm_i386.h @@ -17,9 +17,12 @@ sys/vm_i386.h #define I386_VM_BIGPAGE 0x080 /* 4MB page */ /* Page table specific flags. */ -#define I386_VM_DIRTY 0x040 /* Dirty */ -#define I386_VM_PTAVAIL1 0x080 /* Available for use. */ -#define I386_VM_PTAVAIL2 0x100 /* Available for use. */ +#define I386_VM_DIRTY (1L<< 6) /* Dirty */ +#define I386_VM_PS (1L<< 7) /* Page size. */ +#define I386_VM_GLOBAL (1L<< 8) /* Global. */ +#define I386_VM_PTAVAIL1 (1L<< 9) /* Available for use. */ +#define I386_VM_PTAVAIL2 (1L<<10) /* Available for use. */ +#define I386_VM_PTAVAIL3 (1L<<11) /* Available for use. */ #define I386_VM_PT_ENT_SIZE 4 /* Size of a page table entry */ #define I386_VM_DIR_ENTRIES 1024 /* Number of entries in a page dir */ @@ -29,7 +32,18 @@ sys/vm_i386.h #define I386_VM_PT_ENTRIES 1024 /* Number of entries in a page table */ #define I386_VM_PFA_SHIFT 22 /* Page frame address shift */ -#define I386_CR0_PG 0x80000000 /* Enable paging */ +/* CR0 bits */ +#define I386_CR0_PG 0x80000000 /* Enable paging */ + +/* some CR4 bits */ +#define I386_CR4_VME 0x00000001 /* Virtual 8086 */ +#define I386_CR4_PVI 0x00000002 /* Virtual ints */ +#define I386_CR4_TSD 0x00000004 /* RDTSC privileged */ +#define I386_CR4_DE 0x00000008 /* Debugging extensions */ +#define I386_CR4_PSE 0x00000010 /* Page size extensions */ +#define I386_CR4_PAE 0x00000020 /* Physical addr extens. */ +#define I386_CR4_MCE 0x00000040 /* Machine check enable */ +#define I386_CR4_PGE 0x00000080 /* Global page flag enable */ /* i386 paging 'functions' */ #define I386_VM_PTE(v) (((v) >> I386_VM_PT_ENT_SHIFT) & I386_VM_PT_ENT_MASK)