Merge branch 'fat-library' into master.

ChangeLog

+2015-01-25  Niels Möller  <nisse@lysator.liu.se>
+
+	From Martin Storsjö:
+	* arm: Add .arch directives for armv6. This allows building these
+	files as part of a fat build, even if the assembler by default
+	targets a lower architecture version.
+
+2015-01-23  Niels Möller  <nisse@lysator.liu.se>
+
+	* fat-setup.h (DEFINE_FAT_FUNC): Check value of function pointer,
+	before calling fat_init. Should be correct even without memory
+	barrier.
+	* fat-x86_64.c (fat_init): Deleted static variable initialized.
+	The checks of the relevant pointer in DEFINE_FAT_FUNC is more
+	robust.
+	* fat-arm.c (fat_init): Likewise.
+
+2015-01-21  Niels Möller  <nisse@lysator.liu.se>
+
+	* fat-arm.c (fat_init): Setup for use of neon assembly functions.
+
+	* arm/fat/salsa20-core-internal-2.asm: New file.
+	* arm/fat/sha3-permute-2.asm: New file.
+	* arm/fat/sha512-compress-2.asm: New file.
+	* arm/fat/umac-nh-2.asm: New file.
+	* arm/fat/umac-nh-n-2.asm: New file.
+
+	* salsa20-core-internal.c: Prepare for fat build with C and
+	assembly implementations.
+	* sha512-compress.c: Likewise.
+	* sha3-permute.c: Likewise.
+	* umac-nh.c: Likewise.
+	* umac-nh-n.c: Likewise.
+
+	* configure.ac (asm_nettle_optional_list): Added more *-2.asm
+	files, and corresponding HAVE_NATIVE_* defines. Recognize PROLOGUE
+	macro in asm files, also when not at the start of the line.
+
+2015-01-20  Niels Möller  <nisse@lysator.liu.se>
+
+	* fat-arm.c (get_arm_features): Check NETTLE_FAT_OVERRIDE
+	environment variable.
+
+	* fat-x86_64.c (get_x86_features): New function. Check
+	NETTLE_FAT_OVERRIDE environment variable.
+	(fat_init): Use it.
+
+	* fat-setup.h (secure_getenv) [!HAVE_SECURE_GETENV]: Dummy
+	definition, returning NULL.
+	(ENV_OVERRIDE): New constant.
+
+	* configure.ac: Check for secure_getenv function.
+
+2015-01-19  Niels Möller  <nisse@lysator.liu.se>
+
+	* configure.ac: Fat library setup for arm.
+	* fat-arm.c: New file.
+	* arm/fat/aes-encrypt-internal.asm: New files.
+	* arm/fat/aes-encrypt-internal-2.asm: New file.
+	* arm/fat/aes-decrypt-internal.asm: New file.
+	* arm/fat/aes-decrypt-internal-2.asm: New file.
+
+	* Makefile.in (DISTFILES): Added fat-setup.h.
+
+	* fat-setup.h: New file, declarations moved from...
+	* fat-x86_64.c: ... old location
+
+2015-01-17  Niels Möller  <nisse@lysator.liu.se>
+
+	* fat-x86_64.c (DECLARE_FAT_FUNC, DEFINE_FAT_FUNC)
+	(DECLARE_FAT_FUNC_VAR): New macros, to define needed resolver and
+	wrapper functions.
+
+	* config.m4.in (SYMBOL_PREFIX): Define from from autoconf
+	ASM_SYMBOL_PREFIX.
+	(C_NAMS): move definition to...
+	* asm.m4 (C_NAME): Define here, also take fat_transform.
+	(fat_suffix): Replaced by...
+	(fat_transform): New macro, taking symbol nama as argument.
+	Updated all uses of fat_suffix.
+	* fat-x86_64.c: Updated for internal "_nettle" prefix on
+	cpu-specific memxor functions.
+
+	* fat-x86_64.c: Set up for sse2 vs non-sse2 memxor. Patch by Nikos
+	Mavrogiannopoulos.
+	* configure.ac (asm_nettle_optional_list): Added memxor-2.asm.
+	* x86_64/fat/memxor-2.asm: New file.
+	* x86_64/fat/memxor.asm: New file.
+
+	* x86_64/memxor.asm: Use ifdef, not ifelse, for testing USE_SSE2.
+
+2015-01-16  Niels Möller  <nisse@lysator.liu.se>
+
+	* configure.ac (OPT_NETTLE_SOURCES): New substituted variable.
+	(asm_path): Fixed x86_64 fat setup. Include only x86_64 and
+	x86_64/fat in the asm_path. Put fat-x86_64.c in
+	OPT_NETTLE_SOURCES, with no symlinking.
+
+	* fat-x86_64.c: Renamed,...
+	* x86_64/fat/fat.c: ... from old name.
+
+2015-01-13  Niels Möller  <nisse@lysator.liu.se>
+
+	* x86_64/fat/fat.c: For constructor hack, check
+	HAVE_GCC_ATTRIBUTE, not __GNUC__. Also support sun compilers, as
+	suggested by Nikos Mavrogiannopoulos, and attch the constructor
+	attribute directly to fat_init.
+	(fat_constructor): Deleted wrapper function.
+
+	* x86_64/fat/fat.c: New file, initialization for x86_64 fat
+	library.
+
+	* x86_64/fat/cpuid.asm (_nettle_cpuid): New file and function.
+
+	* x86_64/fat/aes-encrypt-internal.asm: New file, including
+	x86_64/aes-encrypt-internal.asm, after setting fat_suffix to
+	_x86_64.
+	* x86_64/fat/aes-decrypt-internal.asm: New file, analogous setup.
+	* x86_64/fat/aes-encrypt-internal-2.asm: New file, including
+	x86_64/aesni/aes-encrypt-internal.asm, after setting fat_suffix to
+	_aesni.
+	* x86_64/fat/aes-decrypt-internal.asm-2: New file, analogous
+	setup.
+
+	* configure.ac: New command line option --enable-fat.
+	(asm_nettle_optional_list): Added cpuid.asm, fat.c,
+	aes-encrypt-internal-2.asm, and aes-decrypt-internal-2.asm.
+
+	* asm.m4 (fat_suffix): New suffix added to symbol names.
+
+	* x86_64/aesni/aes-encrypt-internal.asm: Use explicit .byte
+	sequences for aes instructions, don't rely on assembler support.
+	* x86_64/aesni/aes-decrypt-internal.asm: Likewise.
+
+	* aclocal.m4 (NETTLE_CHECK_IFUNC): New macro, checking for ifunc
+	and settting HAVE_LINK_IFUNC if working.
+	* configure.ac: Use it.
+
+2015-01-12  Niels Möller  <nisse@lysator.liu.se>
+
+	* asm.m4 (DECLARE_FUNC): New macro, extracted from PROLOGUE.
+	(PROLOGUE): Use it.
+
+	* configure.ac (OPT_NETTLE_OBJS, OPT_HOGWEED_OBJS): Renamed
+	substituted variables, and list the object files rather than
+	source files.
+	(OPT_ASM_NETTLE_SOURCES, OPT_ASM_HOGWEED_SOURCES): ...Old names.
+	* Makefile.in (OPT_NETTLE_OBJS, OPT_HOGWEED_OBJS): Use new
+	variables.
+
 2015-01-11  Niels Möller  <nisse@lysator.liu.se>
 
 	* x86_64/aesni/aes-decrypt-internal.asm: New file.

Makefile.in

@@ -12,9 +12,10 @@ INSTALL_SCRIPT = @INSTALL_SCRIPT@
 INSTALL_STRIP_PROGRAM = $(INSTALL_PROGRAM) -s
 MKDIR_P = @MKDIR_P@
 
-OPT_ASM_NETTLE_SOURCES = @OPT_ASM_NETTLE_SOURCES@
-OPT_ASM_HOGWEED_SOURCES = @OPT_ASM_HOGWEED_SOURCES@
+OPT_NETTLE_OBJS = @OPT_NETTLE_OBJS@
+OPT_HOGWEED_OBJS = @OPT_HOGWEED_OBJS@
 
+OPT_NETTLE_SOURCES = @OPT_NETTLE_SOURCES@
 OPT_HOGWEED_SOURCES = @IF_MINI_GMP@ mini-gmp.c
 
 SUBDIRS = tools testsuite examples
@@ -134,7 +135,8 @@ nettle_SOURCES = aes-decrypt-internal.c aes-decrypt.c \
 		 umac-poly64.c umac-poly128.c umac-set-key.c \
 		 umac32.c umac64.c umac96.c umac128.c \
 		 write-be32.c write-le32.c write-le64.c \
-		 yarrow256.c yarrow_key_event.c
+		 yarrow256.c yarrow_key_event.c \
+		 $(OPT_NETTLE_SOURCES)
 
 hogweed_SOURCES = sexp.c sexp-format.c \
 		  sexp-transport.c sexp-transport-format.c \
@@ -204,6 +206,10 @@ SOURCES = $(nettle_SOURCES) $(hogweed_SOURCES) \
 	  $(getopt_SOURCES) $(internal_SOURCES) \
 	  aesdata.c desdata.c twofishdata.c shadata.c gcmdata.c eccdata.c
 
+# FIXME: $(SOURCES) includes $(OPT_NETTLE_SOURCES) and
+# $(OPT_HOGWEED_SOURCES), which means that inclusion in this list
+# depends on which sources where included in the build. It needs to
+# always include all files, and we no duplicates.
 DISTFILES = $(SOURCES) $(HEADERS) getopt.h getopt_int.h \
 	.bootstrap run-tests \
 	aclocal.m4 configure.ac \
@@ -217,14 +223,14 @@ DISTFILES = $(SOURCES) $(HEADERS) getopt.h getopt_int.h \
 	aes-internal.h camellia-internal.h serpent-internal.h \
 	cast128_sboxes.h desinfo.h desCode.h \
 	memxor-internal.h nettle-internal.h nettle-write.h \
-	gmp-glue.h ecc-internal.h \
+	gmp-glue.h ecc-internal.h fat-setup.h \
 	mini-gmp.h mini-gmp.c asm.m4 \
 	nettle.texinfo nettle.info nettle.html nettle.pdf sha-example.c
 
 # Rules building static libraries
-nettle_OBJS = $(nettle_SOURCES:.c=.$(OBJEXT)) $(OPT_ASM_NETTLE_SOURCES:.asm=.$(OBJEXT))
+nettle_OBJS = $(nettle_SOURCES:.c=.$(OBJEXT)) $(OPT_NETTLE_OBJS)
 
-hogweed_OBJS = $(hogweed_SOURCES:.c=.$(OBJEXT)) $(OPT_ASM_HOGWEED_SOURCES:.asm=.$(OBJEXT))
+hogweed_OBJS = $(hogweed_SOURCES:.c=.$(OBJEXT)) $(OPT_HOGWEED_OBJS)
 
 libnettle.a: $(nettle_OBJS)
 	-rm -f $@

aclocal.m4

@@ -643,6 +643,41 @@ foo:
 fi
 ])
 
+dnl NETTLE_CHECK_IFUNC
+dnl ------------------
+dnl Check if __attribute__ ((ifunc(...))) works
+AC_DEFUN([NETTLE_CHECK_IFUNC],
+[AC_REQUIRE([AC_PROG_CC])
+AC_CACHE_CHECK([for ifunc support],
+  nettle_cv_link_ifunc,
+  AC_LINK_IFELSE([AC_LANG_PROGRAM([
+static int
+foo_imp(int x)
+{
+  return 1;
+}
+
+typedef void void_func (void);
+
+static void_func *
+foo_resolv(void)
+{
+  return (void_func *) foo_imp;
+}
+
+int foo (int x) __attribute__ ((ifunc("foo_resolv")));
+],[
+  return foo(0);
+
+])],
+[nettle_cv_link_ifunc=yes],
+[nettle_cv_link_ifunc=no]))
+AH_TEMPLATE([HAVE_LINK_IFUNC], [Define if compiler and linker supports __attribute__ ifunc])
+if test "x$nettle_cv_link_ifunc" = xyes ; then
+  AC_DEFINE(HAVE_LINK_IFUNC)
+fi 
+])
+
 dnl @synopsis AX_CREATE_STDINT_H [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]
 dnl
 dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the

arm/fat/aes-decrypt-internal-2.asm

+C arm/fat/aes-decrypt-internal-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+define(<fat_transform>, <$1_armv6>)
+include_src(<arm/v6/aes-decrypt-internal.asm>)

arm/fat/aes-decrypt-internal.asm

+C arm/fat/aes-decrypt-internal.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+define(<fat_transform>, <$1_arm>)
+include_src(<arm/aes-decrypt-internal.asm>)

arm/fat/aes-encrypt-internal-2.asm

+C arm/fat/aes-encrypt-internal-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+define(<fat_transform>, <$1_armv6>)
+include_src(<arm/v6/aes-encrypt-internal.asm>)

arm/fat/aes-encrypt-internal.asm

+C arm/fat/aes-encrypt-internal.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+define(<fat_transform>, <$1_arm>)
+include_src(<arm/aes-encrypt-internal.asm>)

arm/fat/salsa20-core-internal-2.asm

+C arm/fat/salsa20-core-internal-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+dnl PROLOGUE(_nettle_salsa20_core) picked up by configure
+
+define(<fat_transform>, <$1_neon>)
+include_src(<arm/neon/salsa20-core-internal.asm>)

arm/fat/sha3-permute-2.asm

+C arm/fat/sha3-permute-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+dnl PROLOGUE(_nettle_sha3_permute) picked up by configure
+
+define(<fat_transform>, <_$1_neon>)
+include_src(<arm/neon/sha3-permute.asm>)

arm/fat/sha512-compress-2.asm

+C arm/fat/sha3-compress-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+dnl PROLOGUE(_nettle_sha512_compress) picked up by configure
+
+define(<fat_transform>, <$1_neon>)
+include_src(<arm/neon/sha512-compress.asm>)

arm/fat/umac-nh-2.asm

+C arm/fat/umac-nh-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+dnl PROLOGUE(_nettle_umac_nh) picked up by configure
+
+define(<fat_transform>, <$1_neon>)
+include_src(<arm/neon/umac-nh.asm>)

arm/fat/umac-nh-n-2.asm

+C arm/fat/umac-nh-n-2.asm
+
+
+ifelse(<
+   Copyright (C) 2015 Niels Möller
+
+   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/.
+>)
+
+dnl PROLOGUE(_nettle_umac_nh_n) picked up by configure
+
+define(<fat_transform>, <$1_neon>)
+include_src(<arm/neon/umac-nh-n.asm>)

arm/v6/aes-decrypt-internal.asm

@@ -30,6 +30,8 @@ ifelse(<
    not, see http://www.gnu.org/licenses/.
 >) 
 
+	.arch armv6
+
 include_src(<arm/aes.m4>)
 
 define(<PARAM_ROUNDS>, <r0>)

arm/v6/aes-encrypt-internal.asm

@@ -30,6 +30,8 @@ ifelse(<
    not, see http://www.gnu.org/licenses/.
 >) 
 
+	.arch armv6
+
 include_src(<arm/aes.m4>)
 
 C	Benchmarked at at 706, 870, 963 cycles/block on cortex A9,

arm/v6/sha1-compress.asm

@@ -31,6 +31,7 @@ ifelse(<
 >) 
 
 	.file "sha1-compress.asm"
+	.arch armv6
 
 define(<STATE>, <r0>)
 define(<INPUT>, <r1>)

arm/v6/sha256-compress.asm

@@ -31,6 +31,7 @@ ifelse(<
 >) 
 
 	.file "sha256-compress.asm"
+	.arch armv6<