tree 43654821aa73118f73f0e98e40bfb470f089e96d
parent 86b3786078d63242d3194ffc58ae8dae1d1bbef3
author Russell King <[EMAIL PROTECTED]> Wed, 10 Aug 2005 16:15:32 +0100
committer Russell King <[EMAIL PROTECTED]> Wed, 10 Aug 2005 16:15:32 +0100
[ARM] Use #defined constants for manipulating v6 hardware PTE bits
Signed-off-by: Russell King <[EMAIL PROTECTED]>
arch/arm/mm/proc-v6.S | 20 +++++++-------------
include/asm-arm/pgtable.h | 12 +++++++++---
2 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -111,12 +111,6 @@ ENTRY(cpu_v6_switch_mm)
mcr p15, 0, r1, c13, c0, 1 @ set context ID
mov pc, lr
-#define nG (1 << 11)
-#define APX (1 << 9)
-#define AP1 (1 << 5)
-#define AP0 (1 << 4)
-#define XN (1 << 0)
-
/*
* cpu_v6_set_pte(ptep, pte)
*
@@ -141,22 +135,22 @@ ENTRY(cpu_v6_set_pte)
bic r2, r1, #0x00000ff0
bic r2, r2, #0x00000003
- orr r2, r2, #AP0 | 2
+ orr r2, r2, #PTE_EXT_AP0 | 2
tst r1, #L_PTE_WRITE
tstne r1, #L_PTE_DIRTY
- orreq r2, r2, #APX
+ orreq r2, r2, #PTE_EXT_APX
tst r1, #L_PTE_USER
- orrne r2, r2, #AP1 | nG
- tstne r2, #APX
- bicne r2, r2, #APX | AP0
+ orrne r2, r2, #PTE_EXT_AP1 | PTE_EXT_NG
+ tstne r2, #PTE_EXT_APX
+ bicne r2, r2, #PTE_EXT_APX | PTE_EXT_AP0
tst r1, #L_PTE_YOUNG
- biceq r2, r2, #APX | AP1 | AP0
+ biceq r2, r2, #PTE_EXT_APX | PTE_EXT_AP_MASK
@ tst r1, #L_PTE_EXEC
-@ orreq r2, r2, #XN
+@ orreq r2, r2, #PTE_EXT_XN
tst r1, #L_PTE_PRESENT
moveq r2, #0
diff --git a/include/asm-arm/pgtable.h b/include/asm-arm/pgtable.h
--- a/include/asm-arm/pgtable.h
+++ b/include/asm-arm/pgtable.h
@@ -188,12 +188,18 @@ extern void __pgd_error(const char *file
/*
* - extended small page/tiny page
*/
+#define PTE_EXT_XN (1 << 0) /* v6 */
#define PTE_EXT_AP_MASK (3 << 4)
+#define PTE_EXT_AP0 (1 << 4)
+#define PTE_EXT_AP1 (2 << 4)
#define PTE_EXT_AP_UNO_SRO (0 << 4)
-#define PTE_EXT_AP_UNO_SRW (1 << 4)
-#define PTE_EXT_AP_URO_SRW (2 << 4)
-#define PTE_EXT_AP_URW_SRW (3 << 4)
+#define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0)
+#define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1)
+#define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0)
#define PTE_EXT_TEX(x) ((x) << 6) /* v5 */
+#define PTE_EXT_APX (1 << 9) /* v6 */
+#define PTE_EXT_SHARED (1 << 10) /* v6 */
+#define PTE_EXT_NG (1 << 11) /* v6 */
/*
* - small page
-
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