linux-kernel - [RFC PATCH 2/3] selftests/powerpc: update strlen() test to test the new assembly function for PPC64

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Message-Id: <e8ab1af859386fe663840843f787bd4d41045529.1530780629.git.christophe.leroy@c-s.fr>
Date:   Thu,  5 Jul 2018 08:53:59 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>, wei.guo.simon@...il.com,
        segher@...nel.crashing.org
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [RFC PATCH 2/3] selftests/powerpc: update strlen() test to test the
 new assembly function for PPC64

This patch adds a test for testing the new assembly strlen() for PPC64

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 Untested

 tools/testing/selftests/powerpc/stringloops/Makefile      |  5 ++++-
 tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h | 12 ++++++++++++
 tools/testing/selftests/powerpc/stringloops/strlen_64.S   |  1 +
 3 files changed, 17 insertions(+), 1 deletion(-)
 create mode 120000 tools/testing/selftests/powerpc/stringloops/strlen_64.S

diff --git a/tools/testing/selftests/powerpc/stringloops/Makefile b/tools/testing/selftests/powerpc/stringloops/Makefile
index 2f0bd203e18a..bff66284375c 100644
--- a/tools/testing/selftests/powerpc/stringloops/Makefile
+++ b/tools/testing/selftests/powerpc/stringloops/Makefile
@@ -16,9 +16,12 @@ $(OUTPUT)/string.o: string.c
 $(OUTPUT)/strlen_32: strlen.c
 $(OUTPUT)/strlen_32: CFLAGS += -m32
 
+$(OUTPUT)/strlen_64: strlen.c
+$(OUTPUT)/strlen_64: CFLAGS += -m64
+
 ASFLAGS = $(CFLAGS)
 
-TEST_GEN_PROGS := memcmp_32 memcmp_64 strlen strlen_32
+TEST_GEN_PROGS := memcmp_32 memcmp_64 strlen strlen_32 strlen_64
 
 include ../../lib.mk
 
diff --git a/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h b/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h
index 161a7ee54005..891092990217 100644
--- a/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h
+++ b/tools/testing/selftests/powerpc/stringloops/asm/ppc_asm.h
@@ -1,4 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifdef __LITTLE_ENDIAN__
+#define CONFIG_CPU_LITTLE_ENDIAN
+#else
+#define CONFIG_CPU_BIG_ENDIAN
+#endif
 
 #include <ppc-asm.h>
 
@@ -15,4 +20,11 @@
 #define PPC_ROTLI	rotlwi
 #define PPC_CNTLZL	cntlzw
 #define PPC_SRLI	srwi
+#else
+#define SZL		8
+#define PPC_LLU		ldu
+#define PPC_LCMPI	cmpldi
+#define PPC_ROTLI	rotldi
+#define PPC_CNTLZL	cntlzd
+#define PPC_SRLI	srdi
 #endif
diff --git a/tools/testing/selftests/powerpc/stringloops/strlen_64.S b/tools/testing/selftests/powerpc/stringloops/strlen_64.S
new file mode 120000
index 000000000000..d720a2766ec3
--- /dev/null
+++ b/tools/testing/selftests/powerpc/stringloops/strlen_64.S
@@ -0,0 +1 @@
+../../../../../arch/powerpc/lib/strlen_64.S
\ No newline at end of file
-- 
2.13.3