ArmPlatformPkg/Library/ArmSmcLib/ArmSmc.asm

   1 //
   2 //  Copyright (c) 2012, ARM Limited. All rights reserved.
   3 //
   4 //  This program and the accompanying materials
   5 //  are licensed and made available under the terms and conditions of the BSD License
   6 //  which accompanies this distribution.  The full text of the license may be found at
   7 //  http://opensource.org/licenses/bsd-license.php
   8 //
   9 //  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 //  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 //
  12 //
  13
  14     EXPORT ArmCallSmc
  15     EXPORT ArmCallSmcArg1
  16     EXPORT ArmCallSmcArg2
  17     EXPORT ArmCallSmcArg3
  18
  19     AREA   ArmSmc, CODE, READONLY
  20
  21 ArmCallSmc
  22     push    {r1}
  23     mov     r1, r0
  24     ldr     r0,[r1]
  25     smc     #0
  26     str     r0,[r1]
  27     pop     {r1}
  28     blx     lr
  29
  30 // Arg1 in R1
  31 ArmCallSmcArg1
  32     push    {r2-r3}
  33     mov     r2, r0
  34     mov     r3, r1
  35     ldr     r0,[r2]
  36     ldr     r1,[r3]
  37     smc     #0
  38     str     r0,[r2]
  39     str     r1,[r3]
  40     pop     {r2-r3}
  41     blx     lr
  42
  43 ArmCallSmcArg2
  44     push    {r3-r5}
  45     mov     r3, r0
  46     mov     r4, r1
  47     mov     r5, r2
  48     ldr     r0,[r3]
  49     ldr     r1,[r4]
  50     ldr     r2,[r5]
  51     smc     #0
  52     str     r0,[r3]
  53     str     r1,[r4]
  54     str     r2,[r5]
  55     pop     {r3-r5}
  56     blx     lr
  57
  58 ArmCallSmcArg3
  59     push    {r4-r7}
  60     mov     r4, r0
  61     mov     r5, r1
  62     mov     r6, r2
  63     mov     r7, r3
  64     ldr     r0,[r4]
  65     ldr     r1,[r5]
  66     ldr     r2,[r6]
  67     ldr     r3,[r7]
  68     smc     #0
  69     str     r0,[r4]
  70     str     r1,[r5]
  71     str     r2,[r6]
  72     str     r3,[r7]
  73     pop     {r4-r7}
  74     blx     lr
  75
  76     END