blob: e5d43066b88948b8e079e14f1ffd33ad884db067 [file] [log] [blame]
Masahiro Yamadac2da86f2017-04-14 11:10:22 +09001/*
2 * Copyright (c) 2015, Linaro Limited
3 *
4 * This software is licensed under the terms of the GNU General Public
5 * License version 2, as published by the Free Software Foundation, and
6 * may be copied, distributed, and modified under those terms.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 */
14#include <linux/linkage.h>
15
16#include <asm/opcodes-sec.h>
17#include <asm/opcodes-virt.h>
18#include <asm/unwind.h>
19
20 /*
21 * Wrap c macros in asm macros to delay expansion until after the
22 * SMCCC asm macro is expanded.
23 */
24 .macro SMCCC_SMC
25 __SMC(0)
26 .endm
27
28 .macro SMCCC_HVC
29 __HVC(0)
30 .endm
31
32 .macro SMCCC instr
33UNWIND( .fnstart)
34 mov r12, sp
35 push {r4-r7}
36UNWIND( .save {r4-r7})
37 ldm r12, {r4-r7}
38 \instr
39 pop {r4-r7}
40 ldr r12, [sp, #(4 * 4)]
41 stm r12, {r0-r3}
42 bx lr
43UNWIND( .fnend)
44 .endm
45
46/*
47 * void smccc_smc(unsigned long a0, unsigned long a1, unsigned long a2,
48 * unsigned long a3, unsigned long a4, unsigned long a5,
49 * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
50 * struct arm_smccc_quirk *quirk)
51 */
52ENTRY(__arm_smccc_smc)
53 SMCCC SMCCC_SMC
54ENDPROC(__arm_smccc_smc)
55
56/*
57 * void smccc_hvc(unsigned long a0, unsigned long a1, unsigned long a2,
58 * unsigned long a3, unsigned long a4, unsigned long a5,
59 * unsigned long a6, unsigned long a7, struct arm_smccc_res *res,
60 * struct arm_smccc_quirk *quirk)
61 */
62ENTRY(__arm_smccc_hvc)
63 SMCCC SMCCC_HVC
64ENDPROC(__arm_smccc_hvc)