mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
0be7320a63
This patch introduces several assembly macros and definitions used in the .S files across arch/arm64/ like IRQ disabling/enabling, together with asm-offsets.c. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
56 lines
1.6 KiB
ArmAsm
56 lines
1.6 KiB
ArmAsm
/*
|
|
* Based on arch/arm/mm/proc-macros.S
|
|
*
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/thread_info.h>
|
|
|
|
/*
|
|
* vma_vm_mm - get mm pointer from vma pointer (vma->vm_mm)
|
|
*/
|
|
.macro vma_vm_mm, rd, rn
|
|
ldr \rd, [\rn, #VMA_VM_MM]
|
|
.endm
|
|
|
|
/*
|
|
* mmid - get context id from mm pointer (mm->context.id)
|
|
*/
|
|
.macro mmid, rd, rn
|
|
ldr \rd, [\rn, #MM_CONTEXT_ID]
|
|
.endm
|
|
|
|
/*
|
|
* dcache_line_size - get the minimum D-cache line size from the CTR register.
|
|
*/
|
|
.macro dcache_line_size, reg, tmp
|
|
mrs \tmp, ctr_el0 // read CTR
|
|
lsr \tmp, \tmp, #16
|
|
and \tmp, \tmp, #0xf // cache line size encoding
|
|
mov \reg, #4 // bytes per word
|
|
lsl \reg, \reg, \tmp // actual cache line size
|
|
.endm
|
|
|
|
/*
|
|
* icache_line_size - get the minimum I-cache line size from the CTR register.
|
|
*/
|
|
.macro icache_line_size, reg, tmp
|
|
mrs \tmp, ctr_el0 // read CTR
|
|
and \tmp, \tmp, #0xf // cache line size encoding
|
|
mov \reg, #4 // bytes per word
|
|
lsl \reg, \reg, \tmp // actual cache line size
|
|
.endm
|