diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2020-12-09 19:21:43 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2021-02-01 22:41:30 +0300 |
| commit | 6468e898c67b905ec0f95d9678929135bcaf7f67 (patch) | |
| tree | 687e1b123aa0dde8858dd81c3ad731416a1269f6 /arch/arm/boot/compressed/head.S | |
| parent | 5c8fe583cce542aa0b84adc939ce85293de36e5e (diff) | |
| download | linux-6468e898c67b905ec0f95d9678929135bcaf7f67.tar.xz | |
ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
Take the 4 instruction byte swapping sequence from the decompressor's
head.S, and turn it into a rev_l GAS macro for general use. While
at it, make it use the 'rev' instruction when compiling for v6 or
later.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/boot/compressed/head.S')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index d9cce7238a36..d4837c2d0359 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -174,10 +174,7 @@ .macro be32tocpu, val, tmp #ifndef __ARMEB__ /* convert to little endian */ - eor \tmp, \val, \val, ror #16 - bic \tmp, \tmp, #0x00ff0000 - mov \val, \val, ror #8 - eor \val, \val, \tmp, lsr #8 + rev_l \val, \tmp #endif .endm |