linux-kernel - [PATCH v2] xtensa: drop bcopy implementation

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Message-Id: <20230609172510.1944039-1-jcmvbkbc@gmail.com>
Date:   Fri,  9 Jun 2023 10:25:10 -0700
From:   Max Filippov <jcmvbkbc@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Chris Zankel <chris@...kel.net>, Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH v2] xtensa: drop bcopy implementation

bcopy is not exported and there's no in-tree users of this function.
Drop it.

Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
---
Changes v1->v2:
- also remove __HAVE_ARCH_BCOPY macro definition drom string.h

 arch/xtensa/include/asm/string.h |  3 ---
 arch/xtensa/lib/memcopy.S        | 15 ---------------
 2 files changed, 18 deletions(-)

diff --git a/arch/xtensa/include/asm/string.h b/arch/xtensa/include/asm/string.h
index 89b51a0c752f..ffce43513fa2 100644
--- a/arch/xtensa/include/asm/string.h
+++ b/arch/xtensa/include/asm/string.h
@@ -118,9 +118,6 @@ extern void *__memcpy(void *__to, __const__ void *__from, size_t __n);
 extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
 extern void *__memmove(void *__dest, __const__ void *__src, size_t __n);
 
-/* Don't build bcopy at all ...  */
-#define __HAVE_ARCH_BCOPY
-
 #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
 
 /*
diff --git a/arch/xtensa/lib/memcopy.S b/arch/xtensa/lib/memcopy.S
index b20d206bcb71..98c3662bed8c 100644
--- a/arch/xtensa/lib/memcopy.S
+++ b/arch/xtensa/lib/memcopy.S
@@ -274,21 +274,6 @@ WEAK(memcpy)
 
 ENDPROC(__memcpy)
 
-/*
- * void bcopy(const void *src, void *dest, size_t n);
- */
-
-ENTRY(bcopy)
-
-	abi_entry_default
-	# a2=src, a3=dst, a4=len
-	mov	a5, a3
-	mov	a3, a2
-	mov	a2, a5
-	j	.Lmovecommon	# go to common code for memmove+bcopy
-
-ENDPROC(bcopy)
-
 /*
  * void *memmove(void *dst, const void *src, size_t len);
  *
-- 
2.30.2