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hc
2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f 
 kernel/arch/riscv/lib/tishift.S
....@@ -1,42 +1,76 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
12 /*
23  * Copyright (C) 2018 Free Software Foundation, Inc.
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- *
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- *   This program is free software; you can redistribute it and/or
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- *   modify it under the terms of the GNU General Public License
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- *   as published by the Free Software Foundation, version 2.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
124  */
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-  .globl __lshrti3
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-__lshrti3:
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-  beqz  a2, .L1
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-  li    a5,64
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-  sub   a5,a5,a2
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-  addi  sp,sp,-16
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-  sext.w a4,a5
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-  blez  a5, .L2
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-  sext.w a2,a2
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-  sll   a4,a1,a4
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-  srl   a0,a0,a2
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-  srl   a1,a1,a2
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-  or    a0,a0,a4
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-  sd    a1,8(sp)
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-  sd    a0,0(sp)
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-  ld    a0,0(sp)
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-  ld    a1,8(sp)
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-  addi  sp,sp,16
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-  ret
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+
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+#include <linux/linkage.h>
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+#include <asm-generic/export.h>
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+
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+SYM_FUNC_START(__lshrti3)
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+	beqz	a2, .L1
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+	li	a5,64
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+	sub	a5,a5,a2
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+	sext.w	a4,a5
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+	blez	a5, .L2
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+	sext.w	a2,a2
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+	srl	a0,a0,a2
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+	sll	a4,a1,a4
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+	srl	a2,a1,a2
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+	or	a0,a0,a4
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+	mv	a1,a2
3221 .L1:
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-  ret
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+	ret
3423 .L2:
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-  negw  a4,a4
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-  srl   a1,a1,a4
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-  sd    a1,0(sp)
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-  sd    zero,8(sp)
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-  ld    a0,0(sp)
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-  ld    a1,8(sp)
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-  addi  sp,sp,16
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-  ret
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+	negw	a0,a4
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+	li	a2,0
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+	srl	a0,a1,a0
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+	mv	a1,a2
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+	ret
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+SYM_FUNC_END(__lshrti3)
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+EXPORT_SYMBOL(__lshrti3)
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+
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+SYM_FUNC_START(__ashrti3)
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+	beqz	a2, .L3
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+	li	a5,64
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+	sub	a5,a5,a2
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+	sext.w	a4,a5
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+	blez	a5, .L4
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+	sext.w	a2,a2
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+	srl	a0,a0,a2
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+	sll	a4,a1,a4
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+	sra	a2,a1,a2
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+	or	a0,a0,a4
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+	mv	a1,a2
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+.L3:
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+	ret
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+.L4:
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+	negw	a0,a4
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+	srai	a2,a1,0x3f
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+	sra	a0,a1,a0
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+	mv	a1,a2
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+	ret
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+SYM_FUNC_END(__ashrti3)
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+EXPORT_SYMBOL(__ashrti3)
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+
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+SYM_FUNC_START(__ashlti3)
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+	beqz	a2, .L5
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+	li	a5,64
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+	sub	a5,a5,a2
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+	sext.w	a4,a5
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+	blez	a5, .L6
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+	sext.w	a2,a2
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+	sll	a1,a1,a2
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+	srl	a4,a0,a4
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+	sll	a2,a0,a2
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+	or	a1,a1,a4
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+	mv	a0,a2
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+.L5:
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+	ret
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+.L6:
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+	negw	a1,a4
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+	li	a2,0
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+	sll	a1,a0,a1
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+	mv	a0,a2
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+	ret
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+SYM_FUNC_END(__ashlti3)
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+EXPORT_SYMBOL(__ashlti3)