Linux-2.6.12-rc2
[linux-2.6.git] / arch / arm / mm / proc-macros.S
1 /*
2  * We need constants.h for:
3  *  VMA_VM_MM
4  *  VMA_VM_FLAGS
5  *  VM_EXEC
6  */
7 #include <asm/constants.h>
8 #include <asm/thread_info.h>
9
10 /*
11  * vma_vm_mm - get mm pointer from vma pointer (vma->vm_mm)
12  */
13         .macro  vma_vm_mm, rd, rn
14         ldr     \rd, [\rn, #VMA_VM_MM]
15         .endm
16
17 /*
18  * vma_vm_flags - get vma->vm_flags
19  */
20         .macro  vma_vm_flags, rd, rn
21         ldr     \rd, [\rn, #VMA_VM_FLAGS]
22         .endm
23
24         .macro  tsk_mm, rd, rn
25         ldr     \rd, [\rn, #TI_TASK]
26         ldr     \rd, [\rd, #TSK_ACTIVE_MM]
27         .endm
28
29 /*
30  * act_mm - get current->active_mm
31  */
32         .macro  act_mm, rd
33         bic     \rd, sp, #8128
34         bic     \rd, \rd, #63
35         ldr     \rd, [\rd, #TI_TASK]
36         ldr     \rd, [\rd, #TSK_ACTIVE_MM]
37         .endm
38
39 /*
40  * mmid - get context id from mm pointer (mm->context.id)
41  */
42         .macro  mmid, rd, rn
43         ldr     \rd, [\rn, #MM_CONTEXT_ID]
44         .endm
45
46 /*
47  * mask_asid - mask the ASID from the context ID
48  */
49         .macro  asid, rd, rn
50         and     \rd, \rn, #255
51         .endm