1/*
2 * We need constants.h for:
3 *  VMA_VM_MM
4 *  VMA_VM_FLAGS
5 *  VM_EXEC
6 */
7#include <asm/asm-offsets.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
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
62
63/*
64 * cache_line_size - get the cache line size from the CSIDR register
65 * (available on ARMv7+). It assumes that the CSSR register was configured
66 * to access the L1 data cache CSIDR.
67 */
68	.macro	dcache_line_size, reg, tmp
69	mrc	p15, 1, \tmp, c0, c0, 0		@ read CSIDR
70	and	\tmp, \tmp, #7			@ cache line size encoding
71	mov	\reg, #16			@ size offset
72	mov	\reg, \reg, lsl \tmp		@ actual cache line size
73	.endm
74