ArmPkg/Library/ArmSmcLib/AArch64/ArmSmc.S

   1 //
   2 //  Copyright (c) 2012-2013, 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 .text
  15 .align 3
  16
  17 GCC_ASM_EXPORT(ArmCallSmc)
  18 GCC_ASM_EXPORT(ArmCallSmcArg1)
  19 GCC_ASM_EXPORT(ArmCallSmcArg2)
  20 GCC_ASM_EXPORT(ArmCallSmcArg3)
  21
  22 ASM_PFX(ArmCallSmc):
  23   str   x1, [sp, #-0x10]!
  24   mov   x1, x0
  25   ldr   x0,[x1]
  26   smc   #0
  27   str   x0,[x1]
  28   ldr   x1, [sp], #0x10
  29   ret
  30
  31 ASM_PFX(ArmCallSmcArg1):
  32   stp   x2, x3, [sp, #-0x10]!
  33   mov   x2, x0
  34   mov   x3, x1
  35   ldr   x0,[x2]
  36   ldr   x1,[x3]
  37   smc   #0
  38   str   x0,[x2]
  39   str   x1,[x3]
  40   ldp   x2, x3, [sp], #0x10
  41   ret
  42
  43 ASM_PFX(ArmCallSmcArg2):
  44   stp   x3, x4, [sp, #-0x10]!
  45   str   x5, [sp, #-8]!
  46   mov   x3, x0
  47   mov   x4, x1
  48   mov   x5, x2
  49   ldr   x0,[x3]
  50   ldr   x1,[x4]
  51   ldr   x2,[x5]
  52   smc   #0
  53   str   x0,[x3]
  54   str   x1,[x4]
  55   str   x2,[x5]
  56   ldr   x5, [sp], #8
  57   ldp   x3, x4, [sp], #0x10
  58   ret
  59
  60 ASM_PFX(ArmCallSmcArg3):
  61   stp   x4, x5, [sp, #-0x10]!
  62   stp   x6, x7, [sp, #-0x10]!
  63   mov   x4, x0
  64   mov   x5, x1
  65   mov   x6, x2
  66   mov   x7, x3
  67   ldr   x0,[x4]
  68   ldr   x1,[x5]
  69   ldr   x2,[x6]
  70   ldr   x3,[x7]
  71   smc   #0
  72   str   x0,[x4]
  73   str   x1,[x5]
  74   str   x2,[x6]
  75   str   x3,[x7]
  76   ldp   x4, x5, [sp], #0x10
  77   ldp   x6, x7, [sp], #0x10
  78   ret