1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Copyright (c) 2015, Linaro Limited 4 */ 5#include <linux/linkage.h> 6 7#include <asm/opcodes-sec.h> 8#include <asm/opcodes-virt.h> 9 10#define UNWIND(x...) 11 /* 12 * Wrap c macros in asm macros to delay expansion until after the 13 * SMCCC asm macro is expanded. 14 */ 15 .macro SMCCC_SMC 16 __SMC(0) 17 .endm 18 19 .macro SMCCC_HVC 20 __HVC(0) 21 .endm 22 23 .macro SMCCC instr 24UNWIND( .fnstart) 25 mov r12, sp 26 push {r4-r7} 27UNWIND( .save {r4-r7}) 28 ldm r12, {r4-r7} 29 \instr 30 pop {r4-r7} 31 ldr r12, [sp, #(4 * 4)] 32 stm r12, {r0-r3} 33 bx lr 34UNWIND( .fnend) 35 .endm 36 37/* 38 * void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2, 39 * unsigned long a3, unsigned long a4, unsigned long a5, 40 * unsigned long a6, unsigned long a7, struct arm_smccc_res *res, 41 * struct arm_smccc_quirk *quirk) 42 */ 43ENTRY(__arm_smccc_smc) 44 SMCCC SMCCC_SMC 45ENDPROC(__arm_smccc_smc) 46 47/* 48 * void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2, 49 * unsigned long a3, unsigned long a4, unsigned long a5, 50 * unsigned long a6, unsigned long a7, struct arm_smccc_res *res, 51 * struct arm_smccc_quirk *quirk) 52 */ 53ENTRY(__arm_smccc_hvc) 54 SMCCC SMCCC_HVC 55ENDPROC(__arm_smccc_hvc) 56