diff options
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/Arm/CompareGuid.S')
| -rw-r--r-- | roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/Arm/CompareGuid.S | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/Arm/CompareGuid.S b/roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/Arm/CompareGuid.S new file mode 100644 index 000000000..7de70ae34 --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/Arm/CompareGuid.S @@ -0,0 +1,44 @@ +//
+// Copyright (c) 2016, Linaro Limited
+// All rights reserved.
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+
+ .text
+ .thumb
+ .syntax unified
+ .align 5
+ .type ASM_PFX(InternalMemCompareGuid), %function
+ASM_GLOBAL ASM_PFX(InternalMemCompareGuid)
+ASM_PFX(InternalMemCompareGuid):
+ push {r4, lr}
+ ldr r2, [r0]
+ ldr r3, [r0, #4]
+ ldr r4, [r0, #8]
+ ldr r0, [r0, #12]
+ cbz r1, 1f
+ ldr ip, [r1]
+ ldr lr, [r1, #4]
+ cmp r2, ip
+ it eq
+ cmpeq.n r3, lr
+ beq 0f
+ movs r0, #0
+ pop {r4, pc}
+
+0: ldr r2, [r1, #8]
+ ldr r3, [r1, #12]
+ cmp r4, r2
+ it eq
+ cmpeq.n r0, r3
+ bne 2f
+ movs r0, #1
+ pop {r4, pc}
+
+1: orrs r2, r2, r3
+ orrs r4, r4, r0
+ movs r0, #1
+ orrs r2, r2, r4
+2: it ne
+ movne.n r0, #0
+ pop {r4, pc}
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