linux/arch/arm64/lib/tishift.S
Mark Rutland abb77f3d96 arm64: tishift: use asm EXPORT_SYMBOL()
For a while now it's been possible to use EXPORT_SYMBOL() in assembly
files, which allows us to place exports immediately after assembly
functions, as we do for C functions.

As a step towards removing arm64ksyms.c, let's move the tishift exports
to the assembly file the functions are defined in.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2018-12-10 11:50:11 +00:00

75 lines
1012 B
ArmAsm

/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
*
* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
ENTRY(__ashlti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
cmp x3, #0
b.le 2f
lsl x1, x1, x2
lsr x3, x0, x3
lsl x2, x0, x2
orr x1, x1, x3
mov x0, x2
1:
ret
2:
neg w1, w3
mov x2, #0
lsl x1, x0, x1
mov x0, x2
ret
ENDPROC(__ashlti3)
EXPORT_SYMBOL(__ashlti3)
ENTRY(__ashrti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
cmp x3, #0
b.le 2f
lsr x0, x0, x2
lsl x3, x1, x3
asr x2, x1, x2
orr x0, x0, x3
mov x1, x2
1:
ret
2:
neg w0, w3
asr x2, x1, #63
asr x0, x1, x0
mov x1, x2
ret
ENDPROC(__ashrti3)
EXPORT_SYMBOL(__ashrti3)
ENTRY(__lshrti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
cmp x3, #0
b.le 2f
lsr x0, x0, x2
lsl x3, x1, x3
lsr x2, x1, x2
orr x0, x0, x3
mov x1, x2
1:
ret
2:
neg w0, w3
mov x2, #0
lsr x0, x1, x0
mov x1, x2
ret
ENDPROC(__lshrti3)
EXPORT_SYMBOL(__lshrti3)