| Message ID | 20210307165424.165188-2-ardb@kernel.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | crypto: arm - clean up redundant helper macros | expand |
On Sun, Mar 07, 2021 at 05:54:23PM +0100, Ard Biesheuvel wrote: > 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> Although likewise, shouldn't the commit title say "rev_l" instead of "rev_32"? - Eric
On Wed, 10 Mar 2021 at 08:09, Eric Biggers <ebiggers@kernel.org> wrote: > > On Sun, Mar 07, 2021 at 05:54:23PM +0100, Ard Biesheuvel wrote: > > 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> > > Although likewise, shouldn't the commit title say "rev_l" instead of "rev_32"? > Yeah, forgot to update that. I'll respin with that fixed. Thanks, Ard.
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]