| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * We need constants.h for: |
| 3 | * VMA_VM_MM |
| 4 | * VMA_VM_FLAGS |
| 5 | * VM_EXEC |
| 6 | */ |
| Sam Ravnborg | e6ae744 | 2005-09-09 21:08:59 +0200 | [diff] [blame] | 7 | #include <asm/asm-offsets.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
| Russell King | 22b1908 | 2006-06-29 15:09:57 +0100 | [diff] [blame] | 52 | |
| 53 | .macro crval, clear, mmuset, ucset |
| 54 | #ifdef CONFIG_MMU |
| 55 | .word \clear |
| 56 | .word \mmuset |
| 57 | #else |
| 58 | .word \clear |
| 59 | .word \ucset |
| 60 | #endif |
| 61 | .endm |