nettle-bugs

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2191 discussions

[PowerPC64] Add AIX to cpu detection
by Maamoun TK 20 Jul '20

20 Jul '20

--- fat-ppc.c | 29 ++++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) diff --git a/fat-ppc.c b/fat-ppc.c index e09b2097..eca689fe 100644 --- a/fat-ppc.c +++ b/fat-ppc.c @@ -39,10 +39,17 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> -#if defined(__FreeBSD__) && __FreeBSD__ < 12 -#include <sys/sysctl.h> -#else + +#if defined(_AIX) +#include <sys/systemcfg.h> +#elif defined(__linux__) +#include <sys/auxv.h> +#elif defined(__FreeBSD__) +#if __FreeBSD__ >= 12 #include <sys/auxv.h> +#else +#include <sys/sysctl.h> +#endif #endif #include "nettle-types.h" @@ -64,19 +71,23 @@ struct ppc_features static void get_ppc_features (struct ppc_features *features) { +#if defined(_AIX) && defined(__power_8_andup) + features->have_crypto_ext = __power_8_andup() != 0 ? 1 : 0; +#else unsigned long hwcap2 = 0; -#if defined(__FreeBSD__) -#if __FreeBSD__ < 12 +#if defined(__linux__) + hwcap2 = getauxval(AT_HWCAP2); +#elif defined(__FreeBSD__) +#if __FreeBSD__ >= 12 + elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2)); +#else size_t len = sizeof(hwcap2); sysctlbyname("hw.cpu_features2", &hwcap2, &len, NULL, 0); -#else - elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2)); #endif -#else - hwcap2 = getauxval(AT_HWCAP2); #endif features->have_crypto_ext = (hwcap2 & PPC_FEATURE2_VEC_CRYPTO) == PPC_FEATURE2_VEC_CRYPTO ? 1 : 0; +#endif } DECLARE_FAT_FUNC(_nettle_aes_encrypt, aes_crypt_internal_func) -- 2.17.1

2 2

checking ECC point at infinity
by Daiki Ueno 20 Jul '20

20 Jul '20

Hello, SP800-56A (revision 3) section 5.6.2.3.3 now mandates a check that the generated public key (Q) multiplied by the curve order (n) results in an identity element (= an infinity point). It seem that it is not possible to implement this check with the Nettle's public API. The attached patch naively multiplies Q by n but it causes the valgrind errors below. As it works with the curve order minus 1, I added the following check instead in my library, though I'm not sure if this satisfies the original requirement: P = (n - 1) * Q where P's x-coordinate is the same as Q's, and P also lies on the same curve so that indicates P + Q (= n * Q) is an infinity point, according to the group law. Is there a better (direct) way to implement the check? Suggestions appreciated. Conditional jump or move depends on uninitialised value(s) at 0x4880DFB: _nettle_ecc_mul_a (ecc-mul-a.c:145) by 0x48815F8: nettle_ecc_point_mul (ecc-point-mul.c:55) by 0x4012EB: main (ecc-test.c:36) Conditional jump or move depends on uninitialised value(s) at 0x487D1D9: _nettle_sec_tabselect (sec-tabselect.c:54) by 0x4880E1B: _nettle_ecc_mul_a (ecc-mul-a.c:147) by 0x48815F8: nettle_ecc_point_mul (ecc-point-mul.c:55) by 0x4012EB: main (ecc-test.c:36) Conditional jump or move depends on uninitialised value(s) at 0x487E0F3: _nettle_ecc_mod_add (ecc-mod-arith.c:53) by 0x487F51B: _nettle_ecc_dup_jj (ecc-dup-jj.c:81) by 0x4880E66: _nettle_ecc_mul_a (ecc-mul-a.c:171) by 0x48815F8: nettle_ecc_point_mul (ecc-point-mul.c:55) by 0x4012EB: main (ecc-test.c:36) Regards, -- Daiki Ueno #include <nettle/ecdsa.h> #include <nettle/ecc-curve.h> #include <assert.h> #include <string.h> static void myrandom (void *ctx, size_t length, uint8_t *dst) { memset (dst, 0, length); *dst = 0xff; } int main (void) { const struct ecc_curve *curve = nettle_get_secp_256r1 (); struct ecc_point pub; struct ecc_scalar key; mpz_t nz, x, y; struct ecc_scalar n; struct ecc_point r; ecc_point_init (&pub, curve); ecc_scalar_init (&key, curve); ecc_scalar_init (&n, curve); ecc_point_init (&r, curve); ecdsa_generate_keypair (&pub, &key, NULL, myrandom); /* Calculate P = nQ and check if it is an infinity point. */ mpz_init_set_str (nz, "ffffffff00000000ffffffffffffffff" "bce6faada7179e84f3b9cac2fc632551", 16); ecc_scalar_set (&n, nz); mpz_clear (nz); ecc_point_mul (&r, &n, &pub); mpz_init (x); mpz_init (y); ecc_point_get (&r, x, y); assert (mpz_cmp_ui (x, 0) == 0); assert (mpz_cmp_ui (y, 0) == 0); mpz_clear (x); mpz_clear (y); ecc_point_clear (&pub); ecc_scalar_clear (&key); ecc_scalar_clear (&n); ecc_point_clear (&r); return 0; } /** * Local variables: * compile-command: "gcc -o ecc-test ecc-test.c `pkg-config hogweed --cflags --libs` -lgmp" * End: */

2 2

Handling of ORIGIN-based rpaths and runpaths
by Jeffrey Walton 20 Jul '20

20 Jul '20

Hi Everyone, I build OpenSSH for downlevel machines, like OS X and Solaris. I install into /opt/ssh, and I use a runpath of $ORIGIN/../lib. The LDFLAGS are: -Wl,-runpath,'$ORIGIN/../lib' -Wl,-runpath,$(prefix)/lib -Wl,--enable-new-dtags I noticed Nettle does not handle the ORIGIN-based runpath properly: /opt/ssh/lib/libhogweed.so.6: RUNPATH: RIGIN/../lib:/opt/ssh/lib RPATH: RIGIN/../lib:/opt/ssh/lib And: /opt/ssh/lib/libnettle.so.8.0: RUNPATH: RIGIN/../lib:/opt/ssh/lib RPATH: RIGIN/../lib:/opt/ssh/lib Besides $ORIGIN, Nettle may encounter $LIB and $PLATFORM. Also see ld.so man page (https://man7.org/linux/man-pages/man8/ld.so.8.html). I believe the fix is to escape the dollar sign in the makefile. That is, when Nettle creates its makefiles, it must use: -Wl,-runpath,'$$ORIGIN/../lib' ... Jeff

2 4

Assembly recipe missing ASFLAGS
by Jeffrey Walton 17 Jul '20

17 Jul '20

Hi Everyone, I noticed *.s recipes do not use ASFLAGS. ASFLAGS includes -Wa,--noexecstack:

1 1

relocation error: R_AMD64_64
by Jeffrey Walton 17 Jul '20

17 Jul '20

Hi Everyone, I'm seeing a fair amount of "ld: warning: relocation error: R_AMD64_64" when linking from nettle-3.6 release tarball: gcc -g2 -O2 -m64 -march=native -fPIC -pthread -ggdb3 -Wall -W -Wno-sign-compare -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wpointer-arith -Wbad-function-cast -Wnested-externs -L.. -L/opt/ssh/lib -m64 -Wl,-R,'RIGIN/../lib' -Wl,-R,/opt/ssh/lib -Wl,-z,now rsa-sign.o io.o read_rsa_key.o \ -lhogweed -lnettle -lgmp -ldl -lpthread -o rsa-sign ld: warning: relocation error: R_AMD64_64: file ../getopt.o: symbol optarg: external symbolic relocation against non-allocatable section .debug_info; cannot be processed at runtime: relocation ignored It looks like getopt was not built correctly. Jeff

2 1

[PATCH 1/4] Check for PowerPC64 assembly if crypto extensions are available
by Maamoun TK 14 Jul '20

14 Jul '20

--- Makefile.in | 2 +- aclocal.m4 | 52 ++++++++++++++++++++++++++++++++++++++++ configure.ac | 11 +++++++++ powerpc64/README | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++ powerpc64/machine.m4 | 24 +++++++++++++++++++ 5 files changed, 155 insertions(+), 1 deletion(-) create mode 100644 powerpc64/README create mode 100644 powerpc64/machine.m4 diff --git a/Makefile.in b/Makefile.in index 77efb5c9..1508e8f4 100644 --- a/Makefile.in +++ b/Makefile.in @@ -603,7 +603,7 @@ distdir: $(DISTFILES) done set -e; for d in sparc32 sparc64 x86 \ x86_64 x86_64/aesni x86_64/sha_ni x86_64/fat \ - arm arm/neon arm/v6 arm/fat ; do \ + arm arm/neon arm/v6 arm/fat powerpc64 ; do \ mkdir "$(distdir)/$$d" ; \ find "$(srcdir)/$$d" -maxdepth 1 '(' -name '*.asm' -o -name '*.m4' ')' \ -exec cp '{}' "$(distdir)/$$d" ';' ; \ diff --git a/aclocal.m4 b/aclocal.m4 index 513b2df4..e38181ad 100644 --- a/aclocal.m4 +++ b/aclocal.m4 @@ -462,6 +462,58 @@ foo: fi ]) +dnl NETTLE_CHECK_POWER_CRYPTO_EXT +dnl --------------------- +dnl Check if POWER crypto extensions should be used. +dnl Obeys enable_power_crypto_ext, which should be set earlier. +AC_DEFUN([NETTLE_CHECK_POWER_CRYPTO_EXT], +[if test "$enable_power_crypto_ext" = auto ; then + if test "$cross_compiling" = yes ; then + dnl Check if compiler/assembler accepts it. + AC_CACHE_CHECK([if assembler accepts crypto instructions], + nettle_cv_asm_power_vcrypto, + [GMP_TRY_ASSEMBLE([ +.text +foo: + vcipher 0, 0, 1 +], + [nettle_cv_asm_power_vcrypto=yes], + [nettle_cv_asm_power_vcrypto=no])]) + enable_power_crypto_ext="$nettle_cv_asm_power_vcrypto" + else + AC_CACHE_CHECK([if crypto extensions supported], + nettle_cv_asm_power_vcrypto, + [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ +#if defined(__FreeBSD__) && __FreeBSD__ < 12 +#include <sys/sysctl.h> +#else +#include <sys/auxv.h> +#endif +// Define from arch/powerpc/include/uapi/asm/cputable.h in Linux kernel +#ifndef PPC_FEATURE2_VEC_CRYPTO +#define PPC_FEATURE2_VEC_CRYPTO 0x02000000 +#endif + unsigned long hwcap2 = 0; + ]], [[ +#if defined(__FreeBSD__) +#if __FreeBSD__ < 12 + size_t len = sizeof(hwcap2); + sysctlbyname("hw.cpu_features2", &hwcap2, &len, NULL, 0); +#else + elf_aux_info(AT_HWCAP2, &hwcap2, sizeof(hwcap2)); +#endif +#else + hwcap2 = getauxval(AT_HWCAP2); +#endif + return (hwcap2 & PPC_FEATURE2_VEC_CRYPTO) == PPC_FEATURE2_VEC_CRYPTO ? 0 : 1; + ]])], + [nettle_cv_asm_power_vcrypto=yes], + [nettle_cv_asm_power_vcrypto=no])]) + enable_power_crypto_ext="$nettle_cv_asm_power_vcrypto" + fi +fi +]) + dnl NETTLE_CHECK_IFUNC dnl ------------------ dnl Check if __attribute__ ((ifunc(...))) works diff --git a/configure.ac b/configure.ac index 1c0b7393..cc0d67ec 100644 --- a/configure.ac +++ b/configure.ac @@ -89,6 +89,10 @@ AC_ARG_ENABLE(x86-sha-ni, AC_HELP_STRING([--enable-x86-sha-ni], [Enable x86_64 sha_ni instructions. (default=no)]),, [enable_x86_sha_ni=no]) +AC_ARG_ENABLE(power-crypto-ext, + AC_HELP_STRING([--enable-power-crypto-ext], [Enable POWER crypto extentions. (default=auto)]),, + [enable_power_crypto_ext=auto]) + AC_ARG_ENABLE(mini-gmp, AC_HELP_STRING([--enable-mini-gmp], [Enable mini-gmp, used instead of libgmp.]),, [enable_mini_gmp=no]) @@ -434,6 +438,13 @@ if test "x$enable_assembler" = xyes ; then fi fi ;; + *powerpc64*) + NETTLE_CHECK_POWER_CRYPTO_EXT + + if test "x$enable_power_crypto_ext" = xyes ; then + asm_path=powerpc64 + fi + ;; *) enable_assembler=no ;; diff --git a/powerpc64/README b/powerpc64/README new file mode 100644 index 00000000..1890ee9a --- /dev/null +++ b/powerpc64/README @@ -0,0 +1,67 @@ +General-Purpose Register Conventions + +Register Status Use + +GPR0 volatile In function prologs. +GPR1 dedicated Stack pointer. +GPR2 dedicated Table of Contents (TOC) pointer. +GPR3 volatile First word of a function's argument list; + first word of a scalar function return. +GPR4 volatile Second word of a function's argument list; + second word of a scalar function return. +GPR5 volatile Third word of a function's argument list. +GPR6 volatile Fourth word of a function's argument list. +GPR7 volatile Fifth word of a function's argument list. +GPR8 volatile Sixth word of a function's argument list. +GPR9 volatile Seventh word of a function's argument list. +GPR10 volatile Eighth word of a function's argument list. +GPR11 volatile In calls by pointer and as an environment pointer for languages + that require it (for example, PASCAL). +GPR12 volatile For special exception handling required by certain languages and in + glink code. +GPR13 reserved Reserved under 64-bit environment; not restored across system calls. +GPR14:GPR31 nonvolatile These registers must be preserved across a function call. + +Vector Register Conventions + +Register Status + +VR0 Volatile +VR1 Volatile +VR2 Volatile +VR3 Volatile +VR4 Volatile +VR5 Volatile +VR6 Volatile +VR7 Volatile +VR8 Volatile +VR9 Volatile +VR10 Volatile +VR11 Volatile +VR12 Volatile +VR13 Volatile +VR14 Volatile +VR15 Volatile +VR16 Volatile +VR17 Volatile +VR18 Volatile +VR19 Volatile +VR20:31 Nonvolatile (extended ABI mode) their values are preserved across function calls + +Addressing memory + +There are many ways to reference data, the current implementations uses GOT-indirect addressing +(Accessing data through the global offset table): +1. Define data in .data section +2. Load the address of data into register from the global offset table e.g. ld 7, my_var@got(2) +3. Use the address to load the value of data into register e.g. ld 3, 0(7) + +VSX instructions (lxvd2x and stxvd2x) are used to load and store data to memory +instead of VR instructions (lvx and stvx) as it produces a fewer instructions +(lvx and stvx) can be used to load and store data into storage operands +but additional instructions are needed to access unaligned storage operands, please +refer to "6.4.1 Accessing Unaligned Storage Operands" in "POWER ISA Version 2.07 B" +to see an example of accessing unaligned storage operands (lxvd2x and stxvd2x) can +be used to load and store data into unaligned storage operands but permuting is needed +for loading and storing data in little-endian mode +VSX registers are defined with "X" suffix diff --git a/powerpc64/machine.m4 b/powerpc64/machine.m4 new file mode 100644 index 00000000..c8005cd8 --- /dev/null +++ b/powerpc64/machine.m4 @@ -0,0 +1,24 @@ +define(<PROLOGUE>, +<ifelse(WORDS_BIGENDIAN,no, +<.align 5 +.globl C_NAME($1) +DECLARE_FUNC(C_NAME($1)) +C_NAME($1): +addis 2,12,(.TOC.-C_NAME($1))@ha +addi 2,2,(.TOC.-C_NAME($1))@l +.localentry C_NAME($1), .-C_NAME($1)>, +<.globl C_NAME($1) +DECLARE_FUNC(C_NAME($1)) +.section ".opd","aw" +.align 3 +C_NAME($1): +.quad .C_NAME($1),.TOC.@tocbase,0 +.previous +.align 5 +.C_NAME($1):>)>) + +define(<EPILOGUE>, +<ifelse(WORDS_BIGENDIAN,no, +<.size C_NAME($1), . - C_NAME($1)>, +<.size .C_NAME($1), . - .C_NAME($1) +.size C_NAME($1), . - .C_NAME($1)>)>) -- 2.17.1

2 2

[PATCH 4/4] Add AES [Enc|Dec] optimized implementations for PowerPC64
by Maamoun TK 14 Jul '20

14 Jul '20

--- powerpc64/aes-decrypt-internal.asm | 579 +++++++++++++++++++++++++++++++++++++ powerpc64/aes-encrypt-internal.asm | 540 ++++++++++++++++++++++++++++++++++ 2 files changed, 1119 insertions(+) create mode 100644 powerpc64/aes-decrypt-internal.asm create mode 100644 powerpc64/aes-encrypt-internal.asm diff --git a/powerpc64/aes-decrypt-internal.asm b/powerpc64/aes-decrypt-internal.asm new file mode 100644 index 00000000..b194d65f --- /dev/null +++ b/powerpc64/aes-decrypt-internal.asm @@ -0,0 +1,579 @@ +C powerpc64/aes-decrypt-internal.asm + +ifelse(< + Copyright (C) 2020 Mamone Tarsha + This file is part of GNU Nettle. + + GNU Nettle is free software: you can redistribute it and/or + modify it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + or both in parallel, as here. + + GNU Nettle is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see http://www.gnu.org/licenses/. +>) + +C Register usage: + +define(<SP>, <1>) +define(<TOCP>, <2>) + +define(<ROUNDS>, <3>) +define(<KEYS>, <4>) +define(<LENGTH>, <6>) +define(<DST>, <7>) +define(<SRC>, <8>) + +define(<swap_mask>, <0>) + +define(<K>, <1>) +define(<S0>, <2>) +define(<S1>, <3>) +define(<S2>, <4>) +define(<S3>, <5>) +define(<S4>, <6>) +define(<S5>, <7>) +define(<S6>, <8>) +define(<S7>, <9>) +define(<S8>, <10>) +define(<S9>, <11>) +define(<S10>, <12>) +define(<S11>, <13>) +define(<S12>, <14>) +define(<S13>, <15>) +define(<S14>, <16>) +define(<S15>, <17>) + +define(<KX>, <33>) +define(<S0X>, <34>) +define(<S1X>, <35>) +define(<S2X>, <36>) +define(<S3X>, <37>) +define(<S4X>, <38>) +define(<S5X>, <39>) +define(<S6X>, <40>) +define(<S7X>, <41>) +define(<S8X>, <42>) +define(<S9X>, <43>) +define(<S10X>, <44>) +define(<S11X>, <45>) +define(<S12X>, <46>) +define(<S13X>, <47>) +define(<S14X>, <48>) +define(<S15X>, <49>) + +C ZERO vector register is used in place of RoundKey +C for vncipher instruction because the order of InvMixColumns +C and Xor processes are flipped in that instruction. +C The Xor process with RoundKey is executed afterward. +define(<ZERO>, <18>) + +.file "aes-decrypt-internal.asm" + +IF_LE(<.abiversion 2>) +.text + + C _aes_decrypt(unsigned rounds, const uint32_t *keys, + C const struct aes_table *T, + C size_t length, uint8_t *dst, + C uint8_t *src) + +PROLOGUE(_nettle_aes_decrypt) + vxor ZERO,ZERO,ZERO + + ld 5,.swap_mask@got(TOCP) + lvx swap_mask,0,5 + + subi ROUNDS,ROUNDS,1 + srdi LENGTH,LENGTH,4 + + srdi 5,LENGTH,4 #16x loop count + cmpldi 5,0 + beq L8x + + std 17,-120(SP); + std 18,-112(SP); + std 19,-104(SP); + std 20,-96(SP); + std 21,-88(SP); + std 22,-80(SP); + std 23,-72(SP); + std 24,-64(SP); + std 25,-56(SP); + std 26,-48(SP); + std 27,-40(SP); + std 28,-32(SP); + std 29,-24(SP); + std 30,-16(SP); + std 31,-8(SP); + + li 17,0x10 + li 18,0x20 + li 19,0x30 + li 20,0x40 + li 21,0x50 + li 22,0x60 + li 23,0x70 + li 24,0x80 + li 25,0x90 + li 26,0xA0 + li 27,0xB0 + li 28,0xC0 + li 29,0xD0 + li 30,0xE0 + li 31,0xF0 + +.align 5 +Lx16_loop: + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + lxvd2x S1X,17,SRC + lxvd2x S2X,18,SRC + lxvd2x S3X,19,SRC + lxvd2x S4X,20,SRC + lxvd2x S5X,21,SRC + lxvd2x S6X,22,SRC + lxvd2x S7X,23,SRC + lxvd2x S8X,24,SRC + lxvd2x S9X,25,SRC + lxvd2x S10X,26,SRC + lxvd2x S11X,27,SRC + lxvd2x S12X,28,SRC + lxvd2x S13X,29,SRC + lxvd2x S14X,30,SRC + lxvd2x S15X,31,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask + vperm S8,S8,S8,swap_mask + vperm S9,S9,S9,swap_mask + vperm S10,S10,S10,swap_mask + vperm S11,S11,S11,swap_mask + vperm S12,S12,S12,swap_mask + vperm S13,S13,S13,swap_mask + vperm S14,S14,S14,swap_mask + vperm S15,S15,S15,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + vxor S4,S4,K + vxor S5,S5,K + vxor S6,S6,K + vxor S7,S7,K + vxor S8,S8,K + vxor S9,S9,K + vxor S10,S10,K + vxor S11,S11,K + vxor S12,S12,K + vxor S13,S13,K + vxor S14,S14,K + vxor S15,S15,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L16x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipher S0,S0,ZERO + vncipher S1,S1,ZERO + vncipher S2,S2,ZERO + vncipher S3,S3,ZERO + vncipher S4,S4,ZERO + vncipher S5,S5,ZERO + vncipher S6,S6,ZERO + vncipher S7,S7,ZERO + vncipher S8,S8,ZERO + vncipher S9,S9,ZERO + vncipher S10,S10,ZERO + vncipher S11,S11,ZERO + vncipher S12,S12,ZERO + vncipher S13,S13,ZERO + vncipher S14,S14,ZERO + vncipher S15,S15,ZERO + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + vxor S4,S4,K + vxor S5,S5,K + vxor S6,S6,K + vxor S7,S7,K + vxor S8,S8,K + vxor S9,S9,K + vxor S10,S10,K + vxor S11,S11,K + vxor S12,S12,K + vxor S13,S13,K + vxor S14,S14,K + vxor S15,S15,K + addi 10,10,0x10 + bdnz L16x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipherlast S0,S0,K + vncipherlast S1,S1,K + vncipherlast S2,S2,K + vncipherlast S3,S3,K + vncipherlast S4,S4,K + vncipherlast S5,S5,K + vncipherlast S6,S6,K + vncipherlast S7,S7,K + vncipherlast S8,S8,K + vncipherlast S9,S9,K + vncipherlast S10,S10,K + vncipherlast S11,S11,K + vncipherlast S12,S12,K + vncipherlast S13,S13,K + vncipherlast S14,S14,K + vncipherlast S15,S15,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask + vperm S8,S8,S8,swap_mask + vperm S9,S9,S9,swap_mask + vperm S10,S10,S10,swap_mask + vperm S11,S11,S11,swap_mask + vperm S12,S12,S12,swap_mask + vperm S13,S13,S13,swap_mask + vperm S14,S14,S14,swap_mask + vperm S15,S15,S15,swap_mask>) + + stxvd2x S0X,0,DST + stxvd2x S1X,17,DST + stxvd2x S2X,18,DST + stxvd2x S3X,19,DST + stxvd2x S4X,20,DST + stxvd2x S5X,21,DST + stxvd2x S6X,22,DST + stxvd2x S7X,23,DST + stxvd2x S8X,24,DST + stxvd2x S9X,25,DST + stxvd2x S10X,26,DST + stxvd2x S11X,27,DST + stxvd2x S12X,28,DST + stxvd2x S13X,29,DST + stxvd2x S14X,30,DST + stxvd2x S15X,31,DST + + addi SRC,SRC,0x100 + addi DST,DST,0x100 + subic. 5,5,1 + bne Lx16_loop + + ld 17,-120(SP); + ld 18,-112(SP); + ld 19,-104(SP); + ld 20,-96(SP); + ld 21,-88(SP); + ld 22,-80(SP); + ld 23,-72(SP); + ld 24,-64(SP); + ld 25,-56(SP); + ld 26,-48(SP); + ld 27,-40(SP); + ld 28,-32(SP); + ld 29,-24(SP); + ld 30,-16(SP); + ld 31,-8(SP); + + clrldi LENGTH,LENGTH,60 + +L8x: + srdi 5,LENGTH,3 + cmpldi 5,0 + beq L4x + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + li 9,0x10 + lxvd2x S1X,9,SRC + addi 9,9,0x10 + lxvd2x S2X,9,SRC + addi 9,9,0x10 + lxvd2x S3X,9,SRC + addi 9,9,0x10 + lxvd2x S4X,9,SRC + addi 9,9,0x10 + lxvd2x S5X,9,SRC + addi 9,9,0x10 + lxvd2x S6X,9,SRC + addi 9,9,0x10 + lxvd2x S7X,9,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + vxor S4,S4,K + vxor S5,S5,K + vxor S6,S6,K + vxor S7,S7,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L8x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipher S0,S0,ZERO + vncipher S1,S1,ZERO + vncipher S2,S2,ZERO + vncipher S3,S3,ZERO + vncipher S4,S4,ZERO + vncipher S5,S5,ZERO + vncipher S6,S6,ZERO + vncipher S7,S7,ZERO + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + vxor S4,S4,K + vxor S5,S5,K + vxor S6,S6,K + vxor S7,S7,K + addi 10,10,0x10 + bdnz L8x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipherlast S0,S0,K + vncipherlast S1,S1,K + vncipherlast S2,S2,K + vncipherlast S3,S3,K + vncipherlast S4,S4,K + vncipherlast S5,S5,K + vncipherlast S6,S6,K + vncipherlast S7,S7,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask>) + + stxvd2x S0X,0,DST + li 9,0x10 + stxvd2x S1X,9,DST + addi 9,9,0x10 + stxvd2x S2X,9,DST + addi 9,9,0x10 + stxvd2x S3X,9,DST + addi 9,9,0x10 + stxvd2x S4X,9,DST + addi 9,9,0x10 + stxvd2x S5X,9,DST + addi 9,9,0x10 + stxvd2x S6X,9,DST + addi 9,9,0x10 + stxvd2x S7X,9,DST + + addi SRC,SRC,0x80 + addi DST,DST,0x80 + + clrldi LENGTH,LENGTH,61 + +L4x: + srdi 5,LENGTH,2 + cmpldi 5,0 + beq L2x + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + li 9,0x10 + lxvd2x S1X,9,SRC + addi 9,9,0x10 + lxvd2x S2X,9,SRC + addi 9,9,0x10 + lxvd2x S3X,9,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L4x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipher S0,S0,ZERO + vncipher S1,S1,ZERO + vncipher S2,S2,ZERO + vncipher S3,S3,ZERO + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + addi 10,10,0x10 + bdnz L4x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipherlast S0,S0,K + vncipherlast S1,S1,K + vncipherlast S2,S2,K + vncipherlast S3,S3,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask>) + + stxvd2x S0X,0,DST + li 9,0x10 + stxvd2x S1X,9,DST + addi 9,9,0x10 + stxvd2x S2X,9,DST + addi 9,9,0x10 + stxvd2x S3X,9,DST + + addi SRC,SRC,0x40 + addi DST,DST,0x40 + + clrldi LENGTH,LENGTH,62 + +L2x: + srdi 5,LENGTH,1 + cmpldi 5,0 + beq L1x + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + li 9,0x10 + lxvd2x S1X,9,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L2x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipher S0,S0,ZERO + vncipher S1,S1,ZERO + vxor S0,S0,K + vxor S1,S1,K + addi 10,10,0x10 + bdnz L2x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipherlast S0,S0,K + vncipherlast S1,S1,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask>) + + stxvd2x S0X,0,DST + li 9,0x10 + stxvd2x S1X,9,DST + + addi SRC,SRC,0x20 + addi DST,DST,0x20 + + clrldi LENGTH,LENGTH,63 + +L1x: + cmpldi LENGTH,0 + beq Ldone + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask>) + + vxor S0,S0,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L1x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipher S0,S0,ZERO + vxor S0,S0,K + addi 10,10,0x10 + bdnz L1x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vncipherlast S0,S0,K + +IF_LE(<vperm S0,S0,S0,swap_mask>) + + stxvd2x S0X,0,DST + +Ldone: + blr +EPILOGUE(_nettle_aes_decrypt) + + .data + .align 4 +.swap_mask: +IF_LE(<.byte 8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7>) +IF_BE(<.byte 3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12>) diff --git a/powerpc64/aes-encrypt-internal.asm b/powerpc64/aes-encrypt-internal.asm new file mode 100644 index 00000000..76630222 --- /dev/null +++ b/powerpc64/aes-encrypt-internal.asm @@ -0,0 +1,540 @@ +C powerpc64/aes-encrypt-internal.asm + +ifelse(< + Copyright (C) 2020 Mamone Tarsha + This file is part of GNU Nettle. + + GNU Nettle is free software: you can redistribute it and/or + modify it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + or both in parallel, as here. + + GNU Nettle is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see http://www.gnu.org/licenses/. +>) + +C Register usage: + +define(<SP>, <1>) +define(<TOCP>, <2>) + +define(<ROUNDS>, <3>) +define(<KEYS>, <4>) +define(<LENGTH>, <6>) +define(<DST>, <7>) +define(<SRC>, <8>) + +define(<swap_mask>, <0>) + +define(<K>, <1>) +define(<S0>, <2>) +define(<S1>, <3>) +define(<S2>, <4>) +define(<S3>, <5>) +define(<S4>, <6>) +define(<S5>, <7>) +define(<S6>, <8>) +define(<S7>, <9>) +define(<S8>, <10>) +define(<S9>, <11>) +define(<S10>, <12>) +define(<S11>, <13>) +define(<S12>, <14>) +define(<S13>, <15>) +define(<S14>, <16>) +define(<S15>, <17>) + +define(<KX>, <33>) +define(<S0X>, <34>) +define(<S1X>, <35>) +define(<S2X>, <36>) +define(<S3X>, <37>) +define(<S4X>, <38>) +define(<S5X>, <39>) +define(<S6X>, <40>) +define(<S7X>, <41>) +define(<S8X>, <42>) +define(<S9X>, <43>) +define(<S10X>, <44>) +define(<S11X>, <45>) +define(<S12X>, <46>) +define(<S13X>, <47>) +define(<S14X>, <48>) +define(<S15X>, <49>) + +.file "aes-encrypt-internal.asm" + +IF_LE(<.abiversion 2>) +.text + + C _aes_encrypt(unsigned rounds, const uint32_t *keys, + C const struct aes_table *T, + C size_t length, uint8_t *dst, + C uint8_t *src) + +PROLOGUE(_nettle_aes_encrypt) + ld 5,.swap_mask@got(TOCP) + lvx swap_mask,0,5 + + subi ROUNDS,ROUNDS,1 + srdi LENGTH,LENGTH,4 + + srdi 5,LENGTH,4 #16x loop count + cmpldi 5,0 + beq L8x + + std 17,-120(SP); + std 18,-112(SP); + std 19,-104(SP); + std 20,-96(SP); + std 21,-88(SP); + std 22,-80(SP); + std 23,-72(SP); + std 24,-64(SP); + std 25,-56(SP); + std 26,-48(SP); + std 27,-40(SP); + std 28,-32(SP); + std 29,-24(SP); + std 30,-16(SP); + std 31,-8(SP); + + li 17,0x10 + li 18,0x20 + li 19,0x30 + li 20,0x40 + li 21,0x50 + li 22,0x60 + li 23,0x70 + li 24,0x80 + li 25,0x90 + li 26,0xA0 + li 27,0xB0 + li 28,0xC0 + li 29,0xD0 + li 30,0xE0 + li 31,0xF0 + +.align 5 +Lx16_loop: + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + lxvd2x S1X,17,SRC + lxvd2x S2X,18,SRC + lxvd2x S3X,19,SRC + lxvd2x S4X,20,SRC + lxvd2x S5X,21,SRC + lxvd2x S6X,22,SRC + lxvd2x S7X,23,SRC + lxvd2x S8X,24,SRC + lxvd2x S9X,25,SRC + lxvd2x S10X,26,SRC + lxvd2x S11X,27,SRC + lxvd2x S12X,28,SRC + lxvd2x S13X,29,SRC + lxvd2x S14X,30,SRC + lxvd2x S15X,31,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask + vperm S8,S8,S8,swap_mask + vperm S9,S9,S9,swap_mask + vperm S10,S10,S10,swap_mask + vperm S11,S11,S11,swap_mask + vperm S12,S12,S12,swap_mask + vperm S13,S13,S13,swap_mask + vperm S14,S14,S14,swap_mask + vperm S15,S15,S15,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + vxor S4,S4,K + vxor S5,S5,K + vxor S6,S6,K + vxor S7,S7,K + vxor S8,S8,K + vxor S9,S9,K + vxor S10,S10,K + vxor S11,S11,K + vxor S12,S12,K + vxor S13,S13,K + vxor S14,S14,K + vxor S15,S15,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L16x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipher S0,S0,K + vcipher S1,S1,K + vcipher S2,S2,K + vcipher S3,S3,K + vcipher S4,S4,K + vcipher S5,S5,K + vcipher S6,S6,K + vcipher S7,S7,K + vcipher S8,S8,K + vcipher S9,S9,K + vcipher S10,S10,K + vcipher S11,S11,K + vcipher S12,S12,K + vcipher S13,S13,K + vcipher S14,S14,K + vcipher S15,S15,K + addi 10,10,0x10 + bdnz L16x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipherlast S0,S0,K + vcipherlast S1,S1,K + vcipherlast S2,S2,K + vcipherlast S3,S3,K + vcipherlast S4,S4,K + vcipherlast S5,S5,K + vcipherlast S6,S6,K + vcipherlast S7,S7,K + vcipherlast S8,S8,K + vcipherlast S9,S9,K + vcipherlast S10,S10,K + vcipherlast S11,S11,K + vcipherlast S12,S12,K + vcipherlast S13,S13,K + vcipherlast S14,S14,K + vcipherlast S15,S15,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask + vperm S8,S8,S8,swap_mask + vperm S9,S9,S9,swap_mask + vperm S10,S10,S10,swap_mask + vperm S11,S11,S11,swap_mask + vperm S12,S12,S12,swap_mask + vperm S13,S13,S13,swap_mask + vperm S14,S14,S14,swap_mask + vperm S15,S15,S15,swap_mask>) + + stxvd2x S0X,0,DST + stxvd2x S1X,17,DST + stxvd2x S2X,18,DST + stxvd2x S3X,19,DST + stxvd2x S4X,20,DST + stxvd2x S5X,21,DST + stxvd2x S6X,22,DST + stxvd2x S7X,23,DST + stxvd2x S8X,24,DST + stxvd2x S9X,25,DST + stxvd2x S10X,26,DST + stxvd2x S11X,27,DST + stxvd2x S12X,28,DST + stxvd2x S13X,29,DST + stxvd2x S14X,30,DST + stxvd2x S15X,31,DST + + addi SRC,SRC,0x100 + addi DST,DST,0x100 + subic. 5,5,1 + bne Lx16_loop + + ld 17,-120(SP); + ld 18,-112(SP); + ld 19,-104(SP); + ld 20,-96(SP); + ld 21,-88(SP); + ld 22,-80(SP); + ld 23,-72(SP); + ld 24,-64(SP); + ld 25,-56(SP); + ld 26,-48(SP); + ld 27,-40(SP); + ld 28,-32(SP); + ld 29,-24(SP); + ld 30,-16(SP); + ld 31,-8(SP); + + clrldi LENGTH,LENGTH,60 + +L8x: + srdi 5,LENGTH,3 + cmpldi 5,0 + beq L4x + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + li 9,0x10 + lxvd2x S1X,9,SRC + addi 9,9,0x10 + lxvd2x S2X,9,SRC + addi 9,9,0x10 + lxvd2x S3X,9,SRC + addi 9,9,0x10 + lxvd2x S4X,9,SRC + addi 9,9,0x10 + lxvd2x S5X,9,SRC + addi 9,9,0x10 + lxvd2x S6X,9,SRC + addi 9,9,0x10 + lxvd2x S7X,9,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + vxor S4,S4,K + vxor S5,S5,K + vxor S6,S6,K + vxor S7,S7,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L8x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipher S0,S0,K + vcipher S1,S1,K + vcipher S2,S2,K + vcipher S3,S3,K + vcipher S4,S4,K + vcipher S5,S5,K + vcipher S6,S6,K + vcipher S7,S7,K + addi 10,10,0x10 + bdnz L8x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipherlast S0,S0,K + vcipherlast S1,S1,K + vcipherlast S2,S2,K + vcipherlast S3,S3,K + vcipherlast S4,S4,K + vcipherlast S5,S5,K + vcipherlast S6,S6,K + vcipherlast S7,S7,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask + vperm S4,S4,S4,swap_mask + vperm S5,S5,S5,swap_mask + vperm S6,S6,S6,swap_mask + vperm S7,S7,S7,swap_mask>) + + stxvd2x S0X,0,DST + li 9,0x10 + stxvd2x S1X,9,DST + addi 9,9,0x10 + stxvd2x S2X,9,DST + addi 9,9,0x10 + stxvd2x S3X,9,DST + addi 9,9,0x10 + stxvd2x S4X,9,DST + addi 9,9,0x10 + stxvd2x S5X,9,DST + addi 9,9,0x10 + stxvd2x S6X,9,DST + addi 9,9,0x10 + stxvd2x S7X,9,DST + + addi SRC,SRC,0x80 + addi DST,DST,0x80 + + clrldi LENGTH,LENGTH,61 + +L4x: + srdi 5,LENGTH,2 + cmpldi 5,0 + beq L2x + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + li 9,0x10 + lxvd2x S1X,9,SRC + addi 9,9,0x10 + lxvd2x S2X,9,SRC + addi 9,9,0x10 + lxvd2x S3X,9,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + vxor S2,S2,K + vxor S3,S3,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L4x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipher S0,S0,K + vcipher S1,S1,K + vcipher S2,S2,K + vcipher S3,S3,K + addi 10,10,0x10 + bdnz L4x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipherlast S0,S0,K + vcipherlast S1,S1,K + vcipherlast S2,S2,K + vcipherlast S3,S3,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask + vperm S2,S2,S2,swap_mask + vperm S3,S3,S3,swap_mask>) + + stxvd2x S0X,0,DST + li 9,0x10 + stxvd2x S1X,9,DST + addi 9,9,0x10 + stxvd2x S2X,9,DST + addi 9,9,0x10 + stxvd2x S3X,9,DST + + addi SRC,SRC,0x40 + addi DST,DST,0x40 + + clrldi LENGTH,LENGTH,62 + +L2x: + srdi 5,LENGTH,1 + cmpldi 5,0 + beq L1x + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + li 9,0x10 + lxvd2x S1X,9,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask>) + + vxor S0,S0,K + vxor S1,S1,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L2x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipher S0,S0,K + vcipher S1,S1,K + addi 10,10,0x10 + bdnz L2x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipherlast S0,S0,K + vcipherlast S1,S1,K + +IF_LE(<vperm S0,S0,S0,swap_mask + vperm S1,S1,S1,swap_mask>) + + stxvd2x S0X,0,DST + li 9,0x10 + stxvd2x S1X,9,DST + + addi SRC,SRC,0x20 + addi DST,DST,0x20 + + clrldi LENGTH,LENGTH,63 + +L1x: + cmpldi LENGTH,0 + beq Ldone + + lxvd2x KX,0,KEYS + vperm K,K,K,swap_mask + + lxvd2x S0X,0,SRC + +IF_LE(<vperm S0,S0,S0,swap_mask>) + + vxor S0,S0,K + + mtctr ROUNDS + li 10,0x10 +.align 5 +L1x_round_loop: + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipher S0,S0,K + addi 10,10,0x10 + bdnz L1x_round_loop + + lxvd2x KX,10,KEYS + vperm K,K,K,swap_mask + vcipherlast S0,S0,K + +IF_LE(<vperm S0,S0,S0,swap_mask>) + + stxvd2x S0X,0,DST + +Ldone: + blr +EPILOGUE(_nettle_aes_encrypt) + + .data + .align 4 +.swap_mask: +IF_LE(<.byte 8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7>) +IF_BE(<.byte 3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12>) -- 2.17.1

2 2

[PATCH 6/6] "PowerPC64" Update configure.ac and Makefile.in
by Maamoun TK 14 Jul '20

14 Jul '20

--- Makefile.in | 2 +- configure.ac | 21 +++++++++++++++++++-- 2 files changed, 20 insertions(+), 3 deletions(-) diff --git a/Makefile.in b/Makefile.in index 042ebe5f..92216d55 100644 --- a/Makefile.in +++ b/Makefile.in @@ -603,7 +603,7 @@ distdir: $(DISTFILES) done set -e; for d in sparc32 sparc64 x86 \ x86_64 x86_64/aesni x86_64/sha_ni x86_64/fat \ - arm arm/neon arm/v6 arm/fat ; do \ + arm arm/neon arm/v6 arm/fat powerpc64 powerpc64/P8 powerpc64/fat ; do \ mkdir "$(distdir)/$$d" ; \ find "$(srcdir)/$$d" -maxdepth 1 '(' -name '*.asm' -o -name '*.m4' ')' \ -exec cp '{}' "$(distdir)/$$d" ';' ; \ diff --git a/configure.ac b/configure.ac index a01eb7d3..49db7af1 100644 --- a/configure.ac +++ b/configure.ac @@ -89,6 +89,10 @@ AC_ARG_ENABLE(x86-sha-ni, AC_HELP_STRING([--enable-x86-sha-ni], [Enable x86_64 sha_ni instructions. (default=no)]),, [enable_x86_sha_ni=no]) +AC_ARG_ENABLE(power-crypto-ext, + AC_HELP_STRING([--enable-power-crypto-ext], [Enable POWER crypto extentions. (default=no)]),, + [enable_power_crypto_ext=no]) + AC_ARG_ENABLE(mini-gmp, AC_HELP_STRING([--enable-mini-gmp], [Enable mini-gmp, used instead of libgmp.]),, [enable_mini_gmp=no]) @@ -434,6 +438,16 @@ if test "x$enable_assembler" = xyes ; then fi fi ;; + *powerpc64*) + if test "x$enable_fat" = xyes ; then + asm_path="powerpc64/fat powerpc64" + OPT_NETTLE_SOURCES="fat-ppc.c $OPT_NETTLE_SOURCES" + else + if test "x$enable_power_crypto_ext" = xyes ; then + asm_path="powerpc64/P8 powerpc64" + fi + fi + ;; *) enable_assembler=no ;; @@ -453,7 +467,7 @@ asm_replace_list="aes-encrypt-internal.asm aes-decrypt-internal.asm \ sha3-permute.asm umac-nh.asm umac-nh-n.asm machine.m4" # Assembler files which generate additional object files if they are used. -asm_nettle_optional_list="gcm-hash8.asm cpuid.asm \ +asm_nettle_optional_list="gcm-hash.asm gcm-hash8.asm cpuid.asm \ aes-encrypt-internal-2.asm aes-decrypt-internal-2.asm memxor-2.asm \ chacha-core-internal-2.asm salsa20-2core.asm \ salsa20-core-internal-2.asm sha1-compress-2.asm sha256-compress-2.asm \ @@ -571,7 +585,10 @@ AH_VERBATIM([HAVE_NATIVE], #undef HAVE_NATIVE_ecc_secp384r1_redc #undef HAVE_NATIVE_ecc_secp521r1_modp #undef HAVE_NATIVE_ecc_secp521r1_redc -#undef HAVE_NATIVE_gcm_init_key8 +#undef HAVE_NATIVE_aes_decrypt +#undef HAVE_NATIVE_aes_encrypt +#undef HAVE_NATIVE_gcm_init_key +#undef HAVE_NATIVE_gcm_hash #undef HAVE_NATIVE_gcm_hash8 #undef HAVE_NATIVE_gcm_fill #undef HAVE_NATIVE_salsa20_core -- 2.17.1

1 0

[PATCH 5/6] "PowerPC64" Add README
by Maamoun TK 14 Jul '20

14 Jul '20

--- powerpc64/README | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 powerpc64/README diff --git a/powerpc64/README b/powerpc64/README new file mode 100644 index 00000000..f78357ab --- /dev/null +++ b/powerpc64/README @@ -0,0 +1,86 @@ +General-Purpose Register Conventions + +Register Status Use + +GPR0 volatile In function prologs. +GPR1 dedicated Stack pointer. +GPR2 dedicated Table of Contents (TOC) pointer. +GPR3 volatile First word of a function's argument list; + first word of a scalar function return. +GPR4 volatile Second word of a function's argument list; + second word of a scalar function return. +GPR5 volatile Third word of a function's argument list. +GPR6 volatile Fourth word of a function's argument list. +GPR7 volatile Fifth word of a function's argument list. +GPR8 volatile Sixth word of a function's argument list. +GPR9 volatile Seventh word of a function's argument list. +GPR10 volatile Eighth word of a function's argument list. +GPR11 volatile In calls by pointer and as an environment pointer for languages + that require it (for example, PASCAL). +GPR12 volatile For special exception handling required by certain languages and in + glink code. +GPR13 reserved Reserved under 64-bit environment; not restored across system calls. +GPR14:GPR31 nonvolatile These registers must be preserved across a function call. + +Vector Register Conventions + +Register Status + +VR0 Volatile +VR1 Volatile +VR2 Volatile +VR3 Volatile +VR4 Volatile +VR5 Volatile +VR6 Volatile +VR7 Volatile +VR8 Volatile +VR9 Volatile +VR10 Volatile +VR11 Volatile +VR12 Volatile +VR13 Volatile +VR14 Volatile +VR15 Volatile +VR16 Volatile +VR17 Volatile +VR18 Volatile +VR19 Volatile +VR20:31 Nonvolatile (extended ABI mode) their values are preserved across function calls + +Addressing memory + +There are many ways to reference data, in the sake of writing position-independent code +the current implementations uses GOT-indirect addressing (Accessing data through the global +offset table): +1. Define data in .data section +2. Load the address of data into register from the global offset table e.g. ld 7, my_var@got(2) +3. Use the address to load the value of data into register e.g. ld 3, 0(7) +Refer to [2] for more information + +VSX instructions "lxvd2x/stxvd2x" are used to load and store data to memory +instead of VR instructions "lvx/stvx" as it produces a fewer instructions +"lvx/stvx" can be used to load/store data into storage operands +but additional instructions are needed to access unaligned storage operands, refer +to "6.4.1 Accessing Unaligned Storage Operands" in [3] +to see an example of accessing unaligned storage operands. "lxvd2x/stxvd2x" can +be used to load/store data into unaligned storage operands but permuting is needed +for loading and storing data in little-endian mode +VSX registers are defined with "X" suffix +TODO: use architecture 3.0 instructions "lxv/stxv" instead for POWER9 and newer + +Function Prologue + +Big-endian systems only support ELFv1 ABI which requires the following steps in the +function prologue: +1. Write the "official procedure descriptor" in ".opd","aw" section +2. Write procedure description for .my_func in my_func label +3. Switch back to ".text" section for program code +4. Label the beginning of the code .my_func +Refer to [1] for more information +Little-endian systems are compatible with ELFv2 ABI, an example of function prologue +for ELFv2 ABI can be seen in [2] + +[1] http://www.ibm.com/developerworks/linux/library/l-powasm1.html +[2] https://openpowerfoundation.org/?resource_lib=64-bit-elf-v2-abi-specificati… +[3] https://openpowerfoundation.org/?resource_lib=ibm-power-isa-version-2-07-b -- 2.17.1

1 0

[PATCH 3/6] "PowerPC64" Add optimized GHASH
by Maamoun TK 14 Jul '20

14 Jul '20

--- gcm.c | 82 +++- powerpc64/P8/gcm-hash.asm | 998 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 1066 insertions(+), 14 deletions(-) create mode 100644 powerpc64/P8/gcm-hash.asm diff --git a/gcm.c b/gcm.c index cf615daf..935d4420 100644 --- a/gcm.c +++ b/gcm.c @@ -140,6 +140,26 @@ gcm_gf_mul (union nettle_block16 *x, const union nettle_block16 *table) memcpy (x->b, Z.b, sizeof(Z)); } # elif GCM_TABLE_BITS == 8 +# if HAVE_NATIVE_gcm_init_key + +#define gcm_init_key _nettle_gcm_init_key +void +_nettle_gcm_init_key (union nettle_block16 *table); +/* For fat builds */ +void +_nettle_gcm_init_key_c (union nettle_block16 *table); +# endif /* HAVE_NATIVE_gcm_init_key */ +# if HAVE_NATIVE_gcm_hash + +#define gcm_hash _nettle_gcm_hash +void +_nettle_gcm_hash (const struct gcm_key *key, union nettle_block16 *x, + size_t length, const uint8_t *data); +/* For fat builds */ +void +_nettle_gcm_hash_c (const struct gcm_key *key, union nettle_block16 *x, + size_t length, const uint8_t *data); +# endif /* HAVE_NATIVE_gcm_hash */ # if HAVE_NATIVE_gcm_hash8 #define gcm_hash _nettle_gcm_hash8 @@ -225,9 +245,45 @@ gcm_gf_mul (union nettle_block16 *x, const union nettle_block16 *table) #endif /* GCM_TABLE_BITS */ +#if HAVE_NATIVE_gcm_fill + +#define gcm_fill _nettle_gcm_fill +void +_nettle_gcm_fill (uint8_t *ctr, size_t blocks, union nettle_block16 *buffer); +/* For fat builds */ +void +_nettle_gcm_fill_c (uint8_t *ctr, size_t blocks, union nettle_block16 *buffer); +#endif /* HAVE_NATIVE_gcm_fill */ + /* Increment the rightmost 32 bits. */ #define INC32(block) INCREMENT(4, (block.b) + GCM_BLOCK_SIZE - 4) +#ifdef gcm_init_key +void +_nettle_gcm_init_key_c(union nettle_block16 *table) +#else +static void +gcm_init_key(union nettle_block16 *table) +#endif /* !gcm_init_key */ +{ +#if GCM_TABLE_BITS + /* Middle element if GCM_TABLE_BITS > 0, otherwise the first + element */ + unsigned i = (1<<GCM_TABLE_BITS)/2; + + /* Algorithm 3 from the gcm paper. First do powers of two, then do + the rest by adding. */ + while (i /= 2) + block16_mulx_ghash(&table[i], &table[2*i]); + for (i = 2; i < 1<<GCM_TABLE_BITS; i *= 2) + { + unsigned j; + for (j = 1; j < i; j++) + block16_xor3(&table[i+j], &table[i], &table[j]); + } +#endif +} + /* Initialization of GCM. * @ctx: The context of GCM * @cipher: The context of the underlying block cipher @@ -245,24 +301,18 @@ gcm_set_key(struct gcm_key *key, memset(key->h[0].b, 0, GCM_BLOCK_SIZE); f (cipher, GCM_BLOCK_SIZE, key->h[i].b, key->h[0].b); -#if GCM_TABLE_BITS - /* Algorithm 3 from the gcm paper. First do powers of two, then do - the rest by adding. */ - while (i /= 2) - block16_mulx_ghash(&key->h[i], &key->h[2*i]); - for (i = 2; i < 1<<GCM_TABLE_BITS; i *= 2) - { - unsigned j; - for (j = 1; j < i; j++) - block16_xor3(&key->h[i+j], &key->h[i],&key->h[j]); - } -#endif + gcm_init_key(key->h); } -#ifndef gcm_hash +#ifdef gcm_hash +void +_nettle_gcm_hash_c(const struct gcm_key *key, union nettle_block16 *x, + size_t length, const uint8_t *data) +#else static void gcm_hash(const struct gcm_key *key, union nettle_block16 *x, size_t length, const uint8_t *data) +#endif /* !gcm_hash */ { for (; length >= GCM_BLOCK_SIZE; length -= GCM_BLOCK_SIZE, data += GCM_BLOCK_SIZE) @@ -276,7 +326,6 @@ gcm_hash(const struct gcm_key *key, union nettle_block16 *x, gcm_gf_mul (x, key->h); } } -#endif /* !gcm_hash */ static void gcm_hash_sizes(const struct gcm_key *key, union nettle_block16 *x, @@ -333,9 +382,14 @@ gcm_update(struct gcm_ctx *ctx, const struct gcm_key *key, ctx->auth_size += length; } +#ifdef gcm_fill +void +_nettle_gcm_fill_c(uint8_t *ctr, size_t blocks, union nettle_block16 *buffer) +#else static nettle_fill16_func gcm_fill; static void gcm_fill(uint8_t *ctr, size_t blocks, union nettle_block16 *buffer) +#endif /* !gcm_fill */ { uint32_t c; diff --git a/powerpc64/P8/gcm-hash.asm b/powerpc64/P8/gcm-hash.asm new file mode 100644 index 00000000..b8f2178e --- /dev/null +++ b/powerpc64/P8/gcm-hash.asm @@ -0,0 +1,998 @@ +C powerpc64/P8/gcm-hash.asm + +ifelse(< + Copyright (C) 2020 Mamone Tarsha + This file is part of GNU Nettle. + + GNU Nettle is free software: you can redistribute it and/or + modify it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at your + option) any later version. + + or both in parallel, as here. + + GNU Nettle is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see http://www.gnu.org/licenses/. +>) + +C Alignment of gcm_key table elements, which is declared in gcm.h +define(<TableElemAlign>, <0x100>) + +C Register usage: + +define(<SP>, <1>) +define(<TOCP>, <2>) + +define(<TABLE>, <3>) +define(<X>, <4>) +define(<LENGTH>, <5>) +define(<DATA>, <6>) + +define(<zero>, <0>) +define(<swap_mask>, <1>) +define(<hidw_mask>, <2>) +define(<lodw_mask>, <3>) +define(<poly>, <4>) +define(<poly_h>, <4>) +define(<poly_l>, <5>) +define(<RP>, <6>) +define(<Mh>, <7>) +define(<Ml>, <8>) +define(<H>, <9>) +define(<Hh>, <10>) +define(<Hl>, <11>) +define(<RP2>, <9>) +define(<M2h>, <10>) +define(<M2l>, <11>) + +define(<HX>, <41>) +define(<HhX>, <42>) +define(<HlX>, <43>) +define(<H_HhX>, <44>) +define(<H_HX>, <45>) +define(<H_HlX>, <46>) + +define(<sl1>, <1>) +define(<msb>, <5>) +define(<H2>, <6>) +define(<H2h>, <7>) +define(<H2l>, <8>) +define(<H_h>, <12>) +define(<H_m>, <13>) +define(<H_l>, <14>) +define(<H_Hh>, <12>) +define(<H_H>, <13>) +define(<H_Hl>, <14>) +define(<H_t>, <15>) +define(<H2_h>, <16>) +define(<H2_m>, <17>) +define(<H2_l>, <18>) +define(<H2_t>, <19>) + +define(<C0X>, <38>) +define(<C1X>, <39>) +define(<C2X>, <40>) +define(<C3X>, <44>) +define(<C4X>, <38>) +define(<C5X>, <39>) +define(<C6X>, <40>) +define(<C7X>, <44>) + +define(<CX>, <45>) + +define(<C0>, <6>) +define(<C1>, <7>) +define(<C2>, <8>) +define(<C3>, <12>) +define(<C4>, <6>) +define(<C5>, <7>) +define(<C6>, <8>) +define(<C7>, <12>) + +define(<C>, <13>) + +define(<Ch>, <14>) +define(<Cl>, <15>) +define(<Cm>, <16>) + +define(<C01h>, <14>) +define(<C01l>, <15>) +define(<C01>, <16>) +define(<C23h>, <17>) +define(<C23l>, <18>) +define(<C23>, <19>) +define(<C45h>, <20>) +define(<C45l>, <21>) +define(<C45>, <22>) +define(<C67h>, <6>) +define(<C67l>, <7>) +define(<C67>, <8>) + +define(<H21>, <9>) +define(<H21h>, <10>) +define(<H21l>, <11>) +define(<H43>, <23>) +define(<H43h>, <24>) +define(<H43l>, <25>) +define(<H65>, <26>) +define(<H65h>, <27>) +define(<H65l>, <28>) +define(<H87>, <29>) +define(<H87h>, <30>) +define(<H87l>, <31>) + +define(<H21X>, <41>) +define(<H21hX>, <42>) +define(<H21lX>, <43>) +define(<H43X>, <55>) +define(<H43hX>, <56>) +define(<H43lX>, <57>) +define(<H65X>, <58>) +define(<H65hX>, <59>) +define(<H65lX>, <60>) +define(<H87X>, <61>) +define(<H87hX>, <62>) +define(<H87lX>, <63>) + +# gcm_fill registers: + +define(<CTR>, <3>) +define(<BLOCKS>, <4>) +define(<BUFFER>, <5>) + +define(<CTR0>, <2>) +define(<CTR0S>, <3>) +define(<CTR1>, <4>) +define(<CTR2>, <5>) +define(<CTR3>, <6>) +define(<CTR4>, <7>) +define(<CTR5>, <8>) +define(<CTR6>, <9>) +define(<CTR7>, <10>) + +define(<CTR0X>, <34>) +define(<CTR0SX>, <35>) +define(<CTR1X>, <36>) +define(<CTR2X>, <37>) +define(<CTR3X>, <38>) +define(<CTR4X>, <39>) +define(<CTR5X>, <40>) +define(<CTR6X>, <41>) +define(<CTR7X>, <42>) + +define(<I1>, <11>) +define(<I2>, <12>) +define(<I3>, <13>) +define(<I4>, <14>) +define(<I5>, <15>) +define(<I6>, <16>) +define(<I7>, <17>) +define(<I8>, <18>) + +.file "gcm-hash.asm" + +IF_LE(<.abiversion 2>) +.text + + # void gcm_init_key (union gcm_block *table) + +define(<FUNC_ALIGN>, <5>) +PROLOGUE(_nettle_gcm_init_key) + DATA_LOAD_VEC(poly,.polynomial,7) +IF_LE(<DATA_LOAD_VEC(swap_mask,.swap_mask,7)>) + DATA_LOAD_VEC(hidw_mask,.hidw_mask,7) + DATA_LOAD_VEC(lodw_mask,.lodw_mask,7) + + li 10,8*TableElemAlign + lxvd2x HX,10,TABLE # load H +IF_LE(<vperm H,H,H,swap_mask>) + + # --- calculate H = H shift left 1 modulo polynomial --- + + vupkhsw msb,H # most significant bit word-extend + vspltisb sl1,1 # splat 1 for shift left + vspltw msb,msb,0 # most significant bit extend + vsl H,H,sl1 # H shift left 1 + vand msb,msb,poly + vxor zero,zero,zero + vxor H_t,H,msb + + vsldoi H,H_t,H_t,8 # doubleword swap + vsldoi Hh,H,zero,8 + vsldoi Hl,zero,H,8 + + # --- calculate H^2 = H*H --- + + # reduction pre-processing + vsldoi poly_h,zero,poly,8 + vsldoi poly_l,poly_h,poly_h,8 + + # polynomial multiplication "classical" + vpmsumd H_h,H_t,Hh # H^1h*H^1h + vpmsumd H_l,H_t,Hl # H^1l*H^1l + vpmsumd H_m,H_t,H # H^1h*H^1l⊕H^1l*H^1h + + # reduction first phase # [1] + vpmsumd RP,H_l,poly_h # [1] + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,H_m,8 # [2] + vsldoi Ml,H_m,zero,8 # [2] + vsldoi RP,RP,RP,8 # [1] + vxor H_h,H_h,Mh # [2] + vxor H_l,H_l,Ml # [2] + vxor H_l,H_l,RP # [1] + + # reduction second phase + vpmsumd RP,H_l,poly_l + vxor H_h,H_l,H_h + vxor H2_t,H_h,RP + + vsldoi H2,H2_t,H2_t,8 + vsldoi H2h,H2,zero,8 + vsldoi H2l,zero,H2,8 + + # --- calculate [H^2.Hi⊕H^2.Lo:H^1.Hi⊕H^1.Lo] --- + + vperm H_Hh,H2,H,lodw_mask + vperm H_Hl,H2,H,hidw_mask + vxor H_H,H_Hh,H_Hl + + # --- store H,[H^2.Hi⊕H^2.Lo:H^1.Hi⊕H^1.Lo] --- + + li 8,0*TableElemAlign + li 9,1*TableElemAlign + li 10,2*TableElemAlign + stxvd2x HlX,8,TABLE + stxvd2x HX,9,TABLE + stxvd2x HhX,10,TABLE + + li 8,3*TableElemAlign + li 9,4*TableElemAlign + li 10,5*TableElemAlign + stxvd2x H_HhX,8,TABLE + stxvd2x H_HX,9,TABLE + stxvd2x H_HlX,10,TABLE + + # --- calculate H^3,H^4 --- + + # polynomial multiplication "classical" + vpmsumd H_l,H_t,H2l # H^1l*H^2l + vpmsumd H_m,H_t,H2 # H^1h*H^2l⊕H^1l*H^2h + vpmsumd H_h,H_t,H2h # H^1h*H^2h + vpmsumd H2_l,H2_t,H2l # H^2l*H^2l + vpmsumd H2_m,H2_t,H2 # H^2h*H^2l⊕H^2l*H^2h + vpmsumd H2_h,H2_t,H2h # H^2h*H^2h + + # reduction first phase # [1] + vpmsumd RP,H_l,poly_h # [1] H^3 + vpmsumd RP2,H2_l,poly_h # [1] H^4 + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,H_m,8 # [2] H^3 + vsldoi M2h,zero,H2_m,8 # [2] H^4 + vsldoi Ml,H_m,zero,8 # [2] H^3 + vsldoi M2l,H2_m,zero,8 # [2] H^4 + vsldoi RP,RP,RP,8 # [1] H^3 + vsldoi RP2,RP2,RP2,8 # [1] H^4 + vxor H_h,H_h,Mh # [2] H^3 + vxor H2_h,H2_h,M2h # [2] H^4 + vxor H_l,H_l,Ml # [2] H^3 + vxor H2_l,H2_l,M2l # [2] H^4 + vxor H_l,H_l,RP # [1] H^3 + vxor H2_l,H2_l,RP2 # [1] H^4 + + # reduction second phase + vpmsumd RP,H_l,poly_l # H^3 + vpmsumd RP2,H2_l,poly_l # H^4 + vxor H_h,H_l,H_h # H^3 + vxor H2_h,H2_l,H2_h # H^4 + vxor H_h,H_h,RP # H^3 + vxor H2_h,H2_h,RP2 # H^4 + + vsldoi H2,H2_h,H2_h,8 # H^4 + vsldoi H,H_h,H_h,8 # H^3 + vsldoi H2l,zero,H2,8 # H^4 + vsldoi H2h,H2,zero,8 # H^4 + + # --- calculate [H^4.Hi⊕H^4.Lo:H^3.Hi⊕H^3.Lo] --- + + vperm H_Hh,H2,H,lodw_mask + vperm H_Hl,H2,H,hidw_mask + vxor H_H,H_Hh,H_Hl + + # --- store [H^4.Hi⊕H^4.Lo:H^3.Hi⊕H^3.Lo] --- + + li 8,6*TableElemAlign + li 9,7*TableElemAlign + li 10,8*TableElemAlign + stxvd2x H_HhX,8,TABLE + stxvd2x H_HX,9,TABLE + stxvd2x H_HlX,10,TABLE + + # --- calculate H^5,H^6 --- + + # polynomial multiplication "classical" + vpmsumd H_l,H_t,H2l # H^1l*H^4l + vpmsumd H_m,H_t,H2 # H^1h*H^4l⊕H^1l*H^4h + vpmsumd H_h,H_t,H2h # H^1h*H^4h + vpmsumd H2_l,H2_t,H2l # H^2l*H^4l + vpmsumd H2_m,H2_t,H2 # H^2h*H^4l⊕H^2l*H^4h + vpmsumd H2_h,H2_t,H2h # H^2h*H^4h + + # reduction first phase # [1] + vpmsumd RP,H_l,poly_h # [1] H^5 + vpmsumd RP2,H2_l,poly_h # [1] H^6 + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,H_m,8 # [2] H^5 + vsldoi M2h,zero,H2_m,8 # [2] H^6 + vsldoi Ml,H_m,zero,8 # [2] H^5 + vsldoi M2l,H2_m,zero,8 # [2] H^6 + vsldoi RP,RP,RP,8 # [1] H^5 + vsldoi RP2,RP2,RP2,8 # [1] H^6 + vxor H_h,H_h,Mh # [2] H^5 + vxor H2_h,H2_h,M2h # [2] H^6 + vxor H_l,H_l,Ml # [2] H^5 + vxor H2_l,H2_l,M2l # [2] H^6 + vxor H_l,H_l,RP # [1] H^5 + vxor H2_l,H2_l,RP2 # [1] H^6 + + # reduction second phase + vpmsumd RP,H_l,poly_l # H^5 + vpmsumd RP2,H2_l,poly_l # H^6 + vxor H_h,H_l,H_h # H^5 + vxor H2_h,H2_l,H2_h # H^6 + vxor H_h,H_h,RP # H^5 + vxor H2_h,H2_h,RP2 # H^6 + + vsldoi H2,H2_h,H2_h,8 # H^6 + vsldoi H,H_h,H_h,8 # H^5 + vsldoi H2l,zero,H2,8 # H^6 + vsldoi H2h,H2,zero,8 # H^6 + + # --- calculate [H^6.Hi⊕H^6.Lo:H^5.Hi⊕H^5.Lo] --- + + vperm H_Hh,H2,H,lodw_mask + vperm H_Hl,H2,H,hidw_mask + vxor H_H,H_Hh,H_Hl + + # --- store [H^6.Hi⊕H^6.Lo:H^5.Hi⊕H^5.Lo] --- + + li 8,9*TableElemAlign + li 9,10*TableElemAlign + li 10,11*TableElemAlign + stxvd2x H_HhX,8,TABLE + stxvd2x H_HX,9,TABLE + stxvd2x H_HlX,10,TABLE + + # --- calculate H^7,H^8 --- + + # polynomial multiplication "classical" + vpmsumd H_l,H_t,H2l # H^1l*H^6l + vpmsumd H_m,H_t,H2 # H^1h*H^6l⊕H^1l*H^6h + vpmsumd H_h,H_t,H2h # H^1h*H^6h + vpmsumd H2_l,H2_t,H2l # H^2l*H^6l + vpmsumd H2_m,H2_t,H2 # H^2h*H^6l⊕H^2l*H^6h + vpmsumd H2_h,H2_t,H2h # H^2h*H^6h + + # reduction first phase # [1] + vpmsumd RP,H_l,poly_h # [1] H^7 + vpmsumd RP2,H2_l,poly_h # [1] H^8 + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,H_m,8 # [2] H^7 + vsldoi M2h,zero,H2_m,8 # [2] H^8 + vsldoi Ml,H_m,zero,8 # [2] H^7 + vsldoi M2l,H2_m,zero,8 # [2] H^8 + vsldoi RP,RP,RP,8 # [1] H^7 + vsldoi RP2,RP2,RP2,8 # [1] H^8 + vxor H_h,H_h,Mh # [2] H^7 + vxor H2_h,H2_h,M2h # [2] H^8 + vxor H_l,H_l,Ml # [2] H^7 + vxor H2_l,H2_l,M2l # [2] H^8 + vxor H_l,H_l,RP # [1] H^7 + vxor H2_l,H2_l,RP2 # [1] H^8 + + # reduction second phase + vpmsumd RP,H_l,poly_l # H^7 + vpmsumd RP2,H2_l,poly_l # H^8 + vxor H_h,H_l,H_h # H^7 + vxor H2_h,H2_l,H2_h # H^8 + vxor H_h,H_h,RP # H^7 + vxor H2_h,H2_h,RP2 # H^8 + + vsldoi H,H_h,H_h,8 # H^7 + vsldoi H2,H2_h,H2_h,8 # H^8 + + # --- calculate [H^8.Hi⊕H^8.Lo:H^7.Hi⊕H^7.Lo] --- + + vperm H_Hh,H2,H,lodw_mask + vperm H_Hl,H2,H,hidw_mask + vxor H_H,H_Hh,H_Hl + + # --- store [H^8.Hi⊕H^8.Lo:H^7.Hi⊕H^7.Lo] --- + + li 8,12*TableElemAlign + li 9,13*TableElemAlign + li 10,14*TableElemAlign + stxvd2x H_HhX,8,TABLE + stxvd2x H_HX,9,TABLE + stxvd2x H_HlX,10,TABLE + + blr +EPILOGUE(_nettle_gcm_init_key) + + # void gcm_hash (const struct gcm_key *key, union gcm_block *x, + # size_t length, const uint8_t *data) + +define(<FUNC_ALIGN>, <5>) +PROLOGUE(_nettle_gcm_hash) + vxor zero,zero,zero + + DATA_LOAD_VEC(poly,.polynomial,7) +IF_LE(<DATA_LOAD_VEC(swap_mask,.swap_mask,7)>) + DATA_LOAD_VEC(hidw_mask,.hidw_mask,7) + DATA_LOAD_VEC(lodw_mask,.lodw_mask,7) + + vsldoi poly_h,zero,poly,8 + vsldoi poly_l,poly_h,poly_h,8 + + lxvd2x CX,0,X # load X +IF_LE(<vperm C,C,C,swap_mask>) + + srdi 7,LENGTH,7 # 8x loop count + cmpldi 7,0 + beq L2x + + # backup registers + stdu SP,-224(SP) + std 28,216(SP) + std 29,208(SP) + std 30,200(SP) + std 31,192(SP) + li 8,176 + stvx 20,8,SP + subi 8,8,16 + stvx 21,8,SP + subi 8,8,16 + stvx 22,8,SP + subi 8,8,16 + stvx 23,8,SP + subi 8,8,16 + stvx 24,8,SP + subi 8,8,16 + stvx 25,8,SP + subi 8,8,16 + stvx 26,8,SP + subi 8,8,16 + stvx 27,8,SP + subi 8,8,16 + stvx 28,8,SP + subi 8,8,16 + stvx 29,8,SP + subi 8,8,16 + stvx 30,8,SP + subi 8,8,16 + stvx 31,8,SP + + # table loading + li 8,3*TableElemAlign + li 9,4*TableElemAlign + li 10,5*TableElemAlign + lxvd2x H21hX,8,TABLE + lxvd2x H21X,9,TABLE + lxvd2x H21lX,10,TABLE + li 8,6*TableElemAlign + li 9,7*TableElemAlign + li 10,8*TableElemAlign + lxvd2x H43hX,8,TABLE + lxvd2x H43X,9,TABLE + lxvd2x H43lX,10,TABLE + li 8,9*TableElemAlign + li 9,10*TableElemAlign + li 10,11*TableElemAlign + lxvd2x H65hX,8,TABLE + lxvd2x H65X,9,TABLE + lxvd2x H65lX,10,TABLE + li 8,12*TableElemAlign + li 9,13*TableElemAlign + li 10,14*TableElemAlign + lxvd2x H87hX,8,TABLE + lxvd2x H87X,9,TABLE + lxvd2x H87lX,10,TABLE + + li 8,0x10 + li 9,0x20 + li 10,0x30 + li 28,0x40 + li 29,0x50 + li 30,0x60 + li 31,0x70 + + mtctr 7 +.align 5 +L8x_loop: + # input loading + lxvd2x C0X,0,DATA # load C0 + lxvd2x C1X,8,DATA # load C1 + lxvd2x C2X,9,DATA # load C2 + lxvd2x C3X,10,DATA # load C3 + + # swap permuting +IF_LE(<vperm C0,C0,C0,swap_mask + vperm C1,C1,C1,swap_mask + vperm C2,C2,C2,swap_mask + vperm C3,C3,C3,swap_mask>) + + # previous digest combining + vxor C0,C0,C + + # polynomial multiplication "karatsuba" pre-processing + vperm C23h,C2,C3,hidw_mask + vperm C23l,C2,C3,lodw_mask + vperm C01h,C0,C1,hidw_mask + vperm C01l,C0,C1,lodw_mask + + # input loading + lxvd2x C4X,28,DATA # load C4 + lxvd2x C5X,29,DATA # load C5 + lxvd2x C6X,30,DATA # load C6 + lxvd2x C7X,31,DATA # load C7 + + # swap permuting +IF_LE(<vperm C4,C4,C4,swap_mask + vperm C5,C5,C5,swap_mask + vperm C6,C6,C6,swap_mask + vperm C7,C7,C7,swap_mask>) + + # polynomial multiplication "karatsuba" pre-processing + vperm C45h,C4,C5,hidw_mask + vperm C45l,C4,C5,lodw_mask + vperm C67h,C6,C7,hidw_mask + vperm C67l,C6,C7,lodw_mask + vxor C23,C23h,C23l + vxor C01,C01h,C01l + vxor C45,C45h,C45l + vxor C67,C67h,C67l + + # polynomial multiplication "karatsuba" + vpmsumd C23h,C23h,H65h # H23 = H^6h*C2h⊕H^5h*C3h + vpmsumd C23l,C23l,H65l # L23 = H^6l*C2l⊕H^5l*C3l + vpmsumd C01h,C01h,H87h # H01 = H^8h*C0h⊕H^7h*C1h + vpmsumd C01l,C01l,H87l # L01 = H^8l*C0l⊕H^7l*C1l + vpmsumd C67h,C67h,H21h # H67 = H^2h*C6h⊕H^1h*C7h + vpmsumd C67l,C67l,H21l # L67 = H^2l*C6l⊕H^1l*C7l + vpmsumd C45h,C45h,H43h # H45 = H^4h*C4h⊕H^3h*C5h + vpmsumd C45l,C45l,H43l # L45 = H^4l*C4l⊕H^3l*C5l + vpmsumd C23,C23,H65 # M23 = (H^6h⊕H^5h)*(C2h⊕C3h)⊕(H^6l⊕H^5l)*(C2l⊕C3l) + vpmsumd C01,C01,H87 # M01 = (H^8h⊕H^7h)*(C0h⊕C1h)⊕(H^8l⊕H^7l)*(C0l⊕C1l) + vpmsumd C45,C45,H43 # M45 = (H^4h⊕H^3h)*(C4h⊕C5h)⊕(H^4l⊕H^3l)*(C4l⊕C5l) + vpmsumd C67,C67,H21 # M67 = (H^2h⊕H^1h)*(C6h⊕C7h)⊕(H^2l⊕H^1l)*(C6l⊕C7l) + + # polynomial multiplication "karatsuba" post-processing + vxor C23,C23,C23h + vxor C01,C01,C01h + vxor C45,C45,C45h + vxor C67,C67,C67h + vxor C23,C23,C23l + vxor C01,C01,C01l + vxor C45,C45,C45l + vxor C67,C67,C67l + + # deferred recombination of partial products + vxor C01h,C01h,C23h # H0 = H01⊕H23 + vxor C45h,C45h,C67h # H1 = H45⊕H67 + vxor C01l,C01l,C23l # L0 = L01⊕L23 + vxor C45l,C45l,C67l # L1 = L45⊕L45 + vxor C01,C01,C23 # M0 = M01⊕M23 + vxor C45,C45,C67 # M1 = M45⊕M45 + vxor C01h,C01h,C45h # H = H0⊕H1 + vxor C01l,C01l,C45l # L = L0⊕L1 + vxor C01,C01,C45 # M = M0⊕M1 + + # reduction first phase # [1] + vpmsumd RP,C01l,poly_h # [1] + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,C01,8 # [2] + vsldoi Ml,C01,zero,8 # [2] + vsldoi RP,RP,RP,8 # [1] + vxor C01h,C01h,Mh # [2] + vxor C01l,C01l,Ml # [2] + vxor C01l,C01l,RP # [1] + + # reduction second phase + vpmsumd RP,C01l,poly_l + vxor C01h,C01l,C01h + vxor C,C01h,RP + + addi DATA,DATA,0x80 + bdnz L8x_loop + + # restore registers + li 8,0 + lvx 31,8,SP + addi 8,8,16 + lvx 30,8,SP + addi 8,8,16 + lvx 29,8,SP + addi 8,8,16 + lvx 28,8,SP + addi 8,8,16 + lvx 27,8,SP + addi 8,8,16 + lvx 26,8,SP + addi 8,8,16 + lvx 25,8,SP + addi 8,8,16 + lvx 24,8,SP + addi 8,8,16 + lvx 23,8,SP + addi 8,8,16 + lvx 22,8,SP + addi 8,8,16 + lvx 21,8,SP + addi 8,8,16 + lvx 20,8,SP + ld 31,192(SP) + ld 30,200(SP) + ld 29,208(SP) + ld 28,216(SP) + addi SP,SP,224 + + clrldi LENGTH,LENGTH,57 +L2x: + srdi 7,LENGTH,5 + cmpldi 7,0 + beq L1x + + # table loading + li 8,3*TableElemAlign + li 9,4*TableElemAlign + li 10,5*TableElemAlign + lxvd2x H21hX,8,TABLE + lxvd2x H21X,9,TABLE + lxvd2x H21lX,10,TABLE + + li 10,0x10 + + mtctr 7 +.align 5 +L2x_loop: + # input loading + lxvd2x C0X,0,DATA # load C0 + lxvd2x C1X,10,DATA # load C1 + + # swap permuting +IF_LE(<vperm C0,C0,C0,swap_mask + vperm C1,C1,C1,swap_mask>) + + # previous digest combining + vxor C0,C0,C + + # polynomial multiplication "karatsuba" pre-processing + vperm C01h,C0,C1,hidw_mask + vperm C01l,C0,C1,lodw_mask + vxor C01,C01h,C01l + + # polynomial multiplication "karatsuba" + vpmsumd C01h,C01h,H21h # H01 = H^2h*C0h⊕H^1h*C1h + vpmsumd C01l,C01l,H21l # L01 = H^2l*C0l⊕H^1l*C1l + vpmsumd C01,C01,H21 # M01 = (H^2h⊕H^1h)*(C0h⊕C1h)⊕(H^2l⊕H^1l)*(C0l⊕C1l) + + # polynomial multiplication "karatsuba" post-processing + vxor C01,C01,C01h + vxor C01,C01,C01l + + # reduction first phase # [1] + vpmsumd RP,C01l,poly_h # [1] + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,C01,8 # [2] + vsldoi Ml,C01,zero,8 # [2] + vsldoi RP,RP,RP,8 # [1] + vxor C01h,C01h,Mh # [2] + vxor C01l,C01l,Ml # [2] + vxor C01l,C01l,RP # [1] + + # reduction second phase + vpmsumd RP,C01l,poly_l + vxor C01h,C01l,C01h + vxor C,C01h,RP + + addi DATA,DATA,0x20 + bdnz L2x_loop + + clrldi LENGTH,LENGTH,59 +L1x: + srdi 7,LENGTH,4 + cmpldi 7,0 + beq Lrem + + # table loading + li 9,1*TableElemAlign + li 10,2*TableElemAlign + lxvd2x HlX,0,TABLE + lxvd2x HX, 9,TABLE + lxvd2x HhX,10,TABLE + + # input loading + lxvd2x C0X,0,DATA # load C0 + + # swap permuting +IF_LE(<vperm C0,C0,C0,swap_mask>) + + # previous digest combining + vxor C0,C0,C + + vpmsumd Cl,C0,Hl # L = Hl*Cl + vpmsumd Cm,C0,H # M = Hh*Cl⊕Hl*Ch + vpmsumd Ch,C0,Hh # H = Hh*Ch + + # reduction first phase # [1] + vpmsumd RP,Cl,poly_h # [1] + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,Cm,8 # [2] + vsldoi Ml,Cm,zero,8 # [2] + vsldoi RP,RP,RP,8 # [1] + vxor Ch,Ch,Mh # [2] + vxor Cl,Cl,Ml # [2] + vxor Cl,Cl,RP # [1] + + # reduction second phase + vpmsumd RP,Cl,poly_l + vxor Ch,Cl,Ch + vxor C,Ch,RP + + addi DATA,DATA,0x10 + clrldi LENGTH,LENGTH,60 +Lrem: + cmpldi LENGTH,0 + beq Ldone + + # table loading + li 9,1*TableElemAlign + li 10,2*TableElemAlign + lxvd2x HlX,0,TABLE + lxvd2x HX, 9,TABLE + lxvd2x HhX,10,TABLE + + # input loading + stdu SP,-16(SP) + stvx zero,0,SP +Lst_loop: + subic. LENGTH,LENGTH,1 + lbzx 7,LENGTH,DATA + stbx 7,LENGTH,SP + bne Lst_loop + lxvd2x C0X,0,SP + addi SP,SP,16 + + # swap permuting +IF_LE(<vperm C0,C0,C0,swap_mask>) + + # previous digest combining + vxor C0,C0,C + + vpmsumd Cl,C0,Hl # L = Hl*Cl + vpmsumd Cm,C0,H # M = Hh*Cl⊕Hl*Ch + vpmsumd Ch,C0,Hh # H = Hh*Ch + + # reduction first phase # [1] + vpmsumd RP,Cl,poly_h # [1] + + # polynomial multiplication post-processing # [2] + vsldoi Mh,zero,Cm,8 # [2] + vsldoi Ml,Cm,zero,8 # [2] + vsldoi RP,RP,RP,8 # [1] + vxor Ch,Ch,Mh # [2] + vxor Cl,Cl,Ml # [2] + vxor Cl,Cl,RP # [1] + + # reduction second phase + vpmsumd RP,Cl,poly_l + vxor Ch,Cl,Ch + vxor C,Ch,RP + +Ldone: +IF_LE(<vperm C,C,C,swap_mask>) + stxvd2x CX,0,X # store C + blr +EPILOGUE(_nettle_gcm_hash) + + # gcm_fill (uint8_t *ctr, size_t blocks, union gcm_block *buffer) + +define(<FUNC_ALIGN>, <5>) +PROLOGUE(_nettle_gcm_fill) +IF_LE(<DATA_LOAD_VEC(swap_mask,.swap_mask,6)>) + + vxor zero,zero,zero + vspltisb I1,1 + vspltisb I2,2 + vspltisb I3,3 + vspltisb I4,4 + vspltisb I5,5 + vspltisb I6,6 + vspltisb I7,7 + vspltisb I8,8 + vsldoi I1,zero,I1,1 + vsldoi I2,zero,I2,1 + vsldoi I3,zero,I3,1 + vsldoi I4,zero,I4,1 + vsldoi I5,zero,I5,1 + vsldoi I6,zero,I6,1 + vsldoi I7,zero,I7,1 + vsldoi I8,zero,I8,1 + + lxvd2x CTR0X,0,CTR + IF_LE(<vperm CTR0,CTR0,CTR0,swap_mask>) + + srdi 6,BLOCKS,3 # 8x loop count + cmpldi 6,0 + beq Lfill_4x + + std 25,-56(SP); + std 26,-48(SP); + std 27,-40(SP); + std 28,-32(SP); + std 29,-24(SP); + std 30,-16(SP); + std 31,-8(SP); + + li 25,0x10 + li 26,0x20 + li 27,0x30 + li 28,0x40 + li 29,0x50 + li 30,0x60 + li 31,0x70 + + mtctr 6 + L8x_fill_loop: + vadduwm CTR1,CTR0,I1 + vadduwm CTR2,CTR0,I2 + vadduwm CTR3,CTR0,I3 + vadduwm CTR4,CTR0,I4 + vadduwm CTR5,CTR0,I5 + vadduwm CTR6,CTR0,I6 + vadduwm CTR7,CTR0,I7 + + IF_LE(<vperm CTR0S,CTR0,CTR0,swap_mask + vperm CTR1,CTR1,CTR1,swap_mask + vperm CTR2,CTR2,CTR2,swap_mask + vperm CTR3,CTR3,CTR3,swap_mask + vperm CTR4,CTR4,CTR4,swap_mask + vperm CTR5,CTR5,CTR5,swap_mask + vperm CTR6,CTR6,CTR6,swap_mask + vperm CTR7,CTR7,CTR7,swap_mask>) + + IF_LE(<stxvd2x CTR0SX,0,BUFFER>) + IF_BE(<stxvd2x CTR0X,0,BUFFER>) + stxvd2x CTR1X,25,BUFFER + stxvd2x CTR2X,26,BUFFER + stxvd2x CTR3X,27,BUFFER + stxvd2x CTR4X,28,BUFFER + stxvd2x CTR5X,29,BUFFER + stxvd2x CTR6X,30,BUFFER + stxvd2x CTR7X,31,BUFFER + + vadduwm CTR0,CTR0,I8 + addi BUFFER,BUFFER,0x80 + bdnz L8x_fill_loop + + ld 25,-56(SP); + ld 26,-48(SP); + ld 27,-40(SP); + ld 28,-32(SP); + ld 29,-24(SP); + ld 30,-16(SP); + ld 31,-8(SP); + + clrldi BLOCKS,BLOCKS,61 + + Lfill_4x: + srdi 6,BLOCKS,2 + cmpldi 6,0 + beq Lfill_2x + + li 8,0x10 + li 9,0x20 + li 10,0x30 + + vadduwm CTR1,CTR0,I1 + vadduwm CTR2,CTR0,I2 + vadduwm CTR3,CTR0,I3 + + IF_LE(<vperm CTR0S,CTR0,CTR0,swap_mask + vperm CTR1,CTR1,CTR1,swap_mask + vperm CTR2,CTR2,CTR2,swap_mask + vperm CTR3,CTR3,CTR3,swap_mask>) + + IF_LE(<stxvd2x CTR0SX,0,BUFFER>) + IF_BE(<stxvd2x CTR0X,0,BUFFER>) + stxvd2x CTR1X,8,BUFFER + stxvd2x CTR2X,9,BUFFER + stxvd2x CTR3X,10,BUFFER + + vadduwm CTR0,CTR0,I4 + addi BUFFER,BUFFER,0x40 + + clrldi BLOCKS,BLOCKS,62 + + Lfill_2x: + srdi 6,BLOCKS,1 + cmpldi 6,0 + beq Lfill_1x + + li 10,0x10 + + vadduwm CTR1,CTR0,I1 + + IF_LE(<vperm CTR0S,CTR0,CTR0,swap_mask + vperm CTR1,CTR1,CTR1,swap_mask>) + + IF_LE(<stxvd2x CTR0SX,0,BUFFER>) + IF_BE(<stxvd2x CTR0X,0,BUFFER>) + stxvd2x CTR1X,10,BUFFER + + vadduwm CTR0,CTR0,I2 + addi BUFFER,BUFFER,0x20 + + clrldi BLOCKS,BLOCKS,63 + + Lfill_1x: + cmpldi BLOCKS,0 + beq Lfill_done + + IF_LE(<vperm CTR0S,CTR0,CTR0,swap_mask>) + + IF_LE(<stxvd2x CTR0SX,0,BUFFER>) + IF_BE(<stxvd2x CTR0X,0,BUFFER>) + + vadduwm CTR0,CTR0,I1 + + Lfill_done: + IF_LE(<vperm CTR0,CTR0,CTR0,swap_mask>) + stxvd2x CTR0X,0,CTR + + blr +EPILOGUE(_nettle_gcm_fill) + + .data +IF_LE(<.align 4 +.polynomial: + .byte 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2 + .align 4 +.swap_mask: + .byte 8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7 + .align 4 +.hidw_mask: + .byte 23,22,21,20,19,18,17,16,7,6,5,4,3,2,1,0 + .align 4 +.lodw_mask: + .byte 31,30,29,28,27,26,25,24,15,14,13,12,11,10,9,8>) +IF_BE(<.align 4 +.polynomial: + .byte 0xc2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 + .align 4 +.hidw_mask: + .byte 0,1,2,3,4,5,6,7,16,17,18,19,20,21,22,23 + .align 4 +.lodw_mask: + .byte 8,9,10,11,12,13,14,15,24,25,26,27,28,29,30,31>) -- 2.17.1

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nettle-bugs