audk/ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm

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//
// Copyright (c) 2012, ARM Limited. All rights reserved.
//
// This program and the accompanying materials
// are licensed and made available under the terms and conditions of the BSD License
// which accompanies this distribution. The full text of the license may be found at
// http://opensource.org/licenses/bsd-license.php
//
// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
//
//
EXPORT ArmCallSmc
EXPORT ArmCallSmcArg1
EXPORT ArmCallSmcArg2
EXPORT ArmCallSmcArg3
AREA ArmSmc, CODE, READONLY
ArmCallSmc
push {r1}
mov r1, r0
ldr r0,[r1]
smc #0
str r0,[r1]
pop {r1}
blx lr
// Arg1 in R1
ArmCallSmcArg1
push {r2-r3}
mov r2, r0
mov r3, r1
ldr r0,[r2]
ldr r1,[r3]
smc #0
str r0,[r2]
str r1,[r3]
pop {r2-r3}
blx lr
ArmCallSmcArg2
push {r3-r5}
mov r3, r0
mov r4, r1
mov r5, r2
ldr r0,[r3]
ldr r1,[r4]
ldr r2,[r5]
smc #0
str r0,[r3]
str r1,[r4]
str r2,[r5]
pop {r3-r5}
blx lr
ArmCallSmcArg3
push {r4-r7}
mov r4, r0
mov r5, r1
mov r6, r2
mov r7, r3
ldr r0,[r4]
ldr r1,[r5]
ldr r2,[r6]
ldr r3,[r7]
smc #0
str r0,[r4]
str r1,[r5]
str r2,[r6]
str r3,[r7]
pop {r4-r7}
blx lr
END