https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: e8f897f4afef0031fe618a8e94127a0934896aba authored by Linus Torvalds on 10 March 2024, 20:38:09 UTC
Linux 6.8
Linux 6.8
Tip revision: e8f897f
smccc-call.S
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2015, Linaro Limited
*/
#include <linux/linkage.h>
#include <linux/arm-smccc.h>
#include <asm/asm-offsets.h>
#include <asm/opcodes-sec.h>
#include <asm/opcodes-virt.h>
#include <asm/unwind.h>
/*
* Wrap c macros in asm macros to delay expansion until after the
* SMCCC asm macro is expanded.
*/
.macro SMCCC_SMC
__SMC(0)
.endm
.macro SMCCC_HVC
__HVC(0)
.endm
.macro SMCCC instr
UNWIND( .fnstart)
mov r12, sp
push {r4-r7}
UNWIND( .save {r4-r7})
ldm r12, {r4-r7}
\instr
ldr r4, [sp, #36]
cmp r4, #0
beq 1f // No quirk structure
ldr r5, [r4, #ARM_SMCCC_QUIRK_ID_OFFS]
cmp r5, #ARM_SMCCC_QUIRK_QCOM_A6
bne 1f // No quirk present
str r6, [r4, #ARM_SMCCC_QUIRK_STATE_OFFS]
1: pop {r4-r7}
ldr r12, [sp, #(4 * 4)]
stm r12, {r0-r3}
bx lr
UNWIND( .fnend)
.endm
/*
* void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
* unsigned long a3, unsigned long a4, unsigned long a5,
* unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
* struct arm_smccc_quirk *quirk)
*/
ENTRY(__arm_smccc_smc)
SMCCC SMCCC_SMC
ENDPROC(__arm_smccc_smc)
/*
* void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
* unsigned long a3, unsigned long a4, unsigned long a5,
* unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
* struct arm_smccc_quirk *quirk)
*/
ENTRY(__arm_smccc_hvc)
SMCCC SMCCC_HVC
ENDPROC(__arm_smccc_hvc)