mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 05:41:55 +00:00
bd99f9a159
The printk symbol was intended as a generic address that is always
exported, however that turned out to be false with CONFIG_PRINTK=n:
ERROR: "printk" [arch/arm64/kernel/arm64-reloc-test.ko] undefined!
This changes the references to memstart_addr, which should be there
regardless of configuration.
Fixes: a257e02579 ("arm64/kernel: don't ban ADRP to work around Cortex-A53 erratum #843419")
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
90 lines
1.5 KiB
ArmAsm
90 lines
1.5 KiB
ArmAsm
/*
|
|
* Copyright (C) 2017 Linaro, Ltd. <ard.biesheuvel@linaro.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
ENTRY(absolute_data64)
|
|
ldr x0, 0f
|
|
ret
|
|
0: .quad sym64_abs
|
|
ENDPROC(absolute_data64)
|
|
|
|
ENTRY(absolute_data32)
|
|
ldr w0, 0f
|
|
ret
|
|
0: .long sym32_abs
|
|
ENDPROC(absolute_data32)
|
|
|
|
ENTRY(absolute_data16)
|
|
adr x0, 0f
|
|
ldrh w0, [x0]
|
|
ret
|
|
0: .short sym16_abs, 0
|
|
ENDPROC(absolute_data16)
|
|
|
|
ENTRY(signed_movw)
|
|
movz x0, #:abs_g2_s:sym64_abs
|
|
movk x0, #:abs_g1_nc:sym64_abs
|
|
movk x0, #:abs_g0_nc:sym64_abs
|
|
ret
|
|
ENDPROC(signed_movw)
|
|
|
|
ENTRY(unsigned_movw)
|
|
movz x0, #:abs_g3:sym64_abs
|
|
movk x0, #:abs_g2_nc:sym64_abs
|
|
movk x0, #:abs_g1_nc:sym64_abs
|
|
movk x0, #:abs_g0_nc:sym64_abs
|
|
ret
|
|
ENDPROC(unsigned_movw)
|
|
|
|
.align 12
|
|
.space 0xff8
|
|
ENTRY(relative_adrp)
|
|
adrp x0, sym64_rel
|
|
add x0, x0, #:lo12:sym64_rel
|
|
ret
|
|
ENDPROC(relative_adrp)
|
|
|
|
.align 12
|
|
.space 0xffc
|
|
ENTRY(relative_adrp_far)
|
|
adrp x0, memstart_addr
|
|
add x0, x0, #:lo12:memstart_addr
|
|
ret
|
|
ENDPROC(relative_adrp_far)
|
|
|
|
ENTRY(relative_adr)
|
|
adr x0, sym64_rel
|
|
ret
|
|
ENDPROC(relative_adr)
|
|
|
|
ENTRY(relative_data64)
|
|
adr x1, 0f
|
|
ldr x0, [x1]
|
|
add x0, x0, x1
|
|
ret
|
|
0: .quad sym64_rel - .
|
|
ENDPROC(relative_data64)
|
|
|
|
ENTRY(relative_data32)
|
|
adr x1, 0f
|
|
ldr w0, [x1]
|
|
add x0, x0, x1
|
|
ret
|
|
0: .long sym64_rel - .
|
|
ENDPROC(relative_data32)
|
|
|
|
ENTRY(relative_data16)
|
|
adr x1, 0f
|
|
ldrsh w0, [x1]
|
|
add x0, x0, x1
|
|
ret
|
|
0: .short sym64_rel - ., 0
|
|
ENDPROC(relative_data16)
|