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/arch/arm/mm/proc-macros.S

https://bitbucket.org/evzijst/gittest
Assembly | 51 lines | 45 code | 6 blank | 0 comment | 0 complexity | 1838d39af7fbd6f016a1eb43ab035518 MD5 | raw file
 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