[edk2-devel] [PATCH 1/1] ArmPkg/CompilerIntrinsicsLib: Add lasr assembly source for gcc/arm
Pete Batard
pete at akeo.ie
Tue May 7 15:57:26 UTC 2019
While compiling drivers or applications on Debian 9.8, using the native
gcc 6.3.0 ARM compiler, one may run into the following build failure:
"undefined reference to `__aeabi_lasr'"
This patch adds the missing definition, through a port of the existing
RVCT lasr.asm source.
CC: Ard Biesheuvel <ard.biesheuvel at linaro.org>
CC: Leif Lindholm <leif.lindholm at linaro.org>
Signed-off-by: Pete Batard <pete at akeo.ie>
---
ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.S | 22 ++++++++++++++++++++
ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf | 1 +
2 files changed, 23 insertions(+)
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.S b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.S
new file mode 100644
index 000000000000..9ded045b8bc4
--- /dev/null
+++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/lasr.S
@@ -0,0 +1,22 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroIoLib.h>
+
+ASM_FUNC(__aeabi_lasr)
+ subs r3,r2,#0x20
+ bpl L_Test
+ rsb r3,r2,#0x20
+ lsr r0,r0,r2
+ orr r0,r0,r1,LSL r3
+ asr r1,r1,r2
+ bx lr
+L_Test:
+ asr r0,r1,r3
+ asr r1,r1,#31
+ bx lr
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf b/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf
index 0d5634959993..7cb8f194f210 100644
--- a/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf
+++ b/ArmPkg/Library/CompilerIntrinsicsLib/CompilerIntrinsicsLib.inf
@@ -90,6 +90,7 @@ [Sources.ARM]
Arm/uldiv.S | GCC
Arm/ldivmod.S | GCC
+ Arm/lasr.S | GCC
Arm/llsr.S | GCC
Arm/llsl.S | GCC
--
2.21.0.windows.1
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