ArmPkg/Library/ArmSoftFloatLib/Arm/__aeabi_cdcmp.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2015, Linaro Limited. All rights reserved.
   4 //
   5 // SPDX-License-Identifier: BSD-2-Clause-Patent
   6 //
   7 //------------------------------------------------------------------------------
   8
   9     EXPORT      __aeabi_cdrcmple
  10     EXPORT      __aeabi_cdcmpeq
  11     EXPORT      __aeabi_cdcmple
  12     IMPORT      _softfloat_float64_eq
  13     IMPORT      _softfloat_float64_lt
  14
  15     AREA        __aeabi_cdcmp, CODE, READONLY
  16     PRESERVE8
  17
  18 __aeabi_cdrcmple
  19     MOV         IP, R0
  20     MOV         R0, R2
  21     MOV         R2, IP
  22
  23     MOV         IP, R1
  24     MOV         R1, R3
  25     MOV         R3, IP
  26
  27 __aeabi_cdcmpeq
  28 __aeabi_cdcmple
  29     PUSH        {R0 - R3, IP, LR}
  30     BL          _softfloat_float64_eq
  31     SUB         IP, R0, #1
  32     CMP         IP, #0                  // sets C and Z if R0 == 1
  33     POPEQ       {R0 - R3, IP, PC}
  34
  35     LDM         SP, {R0 - R3}
  36     BL          _softfloat_float64_lt
  37     SUB         IP, R0, #1
  38     CMP         IP, #1                  // sets C if R0 == 0
  39     POP         {R0 - R3, IP, PC}
  40
  41     END