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authorArd Biesheuvel <ardb@kernel.org>2021-03-10 11:14:20 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2021-03-19 21:59:46 +1100
commitd5adb9d1f7f8ccabbfa105e148d1465dfebd8cd2 (patch)
treeec5a1eae73be9d56f6ef0e31adb09cc13819f1b8 /arch/arm/crypto
parentd2f2516a3882c0c6463e33c9b112b39bd483f821 (diff)
crypto: arm/aes-scalar - switch to common rev_l/mov_l macros
The scalar AES implementation has some locally defined macros which reimplement things that are now available in macros defined in assembler.h. So let's switch to those. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Nicolas Pitre <nico@fluxnic.net> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm/crypto')
-rw-r--r--arch/arm/crypto/aes-cipher-core.S42
1 files changed, 10 insertions, 32 deletions
diff --git a/arch/arm/crypto/aes-cipher-core.S b/arch/arm/crypto/aes-cipher-core.S
index 472e56d09eea..1da3f41359aa 100644
--- a/arch/arm/crypto/aes-cipher-core.S
+++ b/arch/arm/crypto/aes-cipher-core.S
@@ -99,28 +99,6 @@
__hround \out2, \out3, \in2, \in1, \in0, \in3, \in1, \in0, 0, \sz, \op, \oldcpsr
.endm
- .macro __rev, out, in
- .if __LINUX_ARM_ARCH__ < 6
- lsl t0, \in, #24
- and t1, \in, #0xff00
- and t2, \in, #0xff0000
- orr \out, t0, \in, lsr #24
- orr \out, \out, t1, lsl #8
- orr \out, \out, t2, lsr #8
- .else
- rev \out, \in
- .endif
- .endm
-
- .macro __adrl, out, sym, c
- .if __LINUX_ARM_ARCH__ < 7
- ldr\c \out, =\sym
- .else
- movw\c \out, #:lower16:\sym
- movt\c \out, #:upper16:\sym
- .endif
- .endm
-
.macro do_crypt, round, ttab, ltab, bsz
push {r3-r11, lr}
@@ -133,10 +111,10 @@
ldr r7, [in, #12]
#ifdef CONFIG_CPU_BIG_ENDIAN
- __rev r4, r4
- __rev r5, r5
- __rev r6, r6
- __rev r7, r7
+ rev_l r4, t0
+ rev_l r5, t0
+ rev_l r6, t0
+ rev_l r7, t0
#endif
eor r4, r4, r8
@@ -144,7 +122,7 @@
eor r6, r6, r10
eor r7, r7, r11
- __adrl ttab, \ttab
+ mov_l ttab, \ttab
/*
* Disable interrupts and prefetch the 1024-byte 'ft' or 'it' table into
* L1 cache, assuming cacheline size >= 32. This is a hardening measure
@@ -180,7 +158,7 @@
2: .ifb \ltab
add ttab, ttab, #1
.else
- __adrl ttab, \ltab
+ mov_l ttab, \ltab
// Prefetch inverse S-box for final round; see explanation above
.set i, 0
.rept 256 / 64
@@ -194,10 +172,10 @@
\round r4, r5, r6, r7, r8, r9, r10, r11, \bsz, b, rounds
#ifdef CONFIG_CPU_BIG_ENDIAN
- __rev r4, r4
- __rev r5, r5
- __rev r6, r6
- __rev r7, r7
+ rev_l r4, t0
+ rev_l r5, t0
+ rev_l r6, t0
+ rev_l r7, t0
#endif
ldr out, [sp]