summaryrefslogtreecommitdiff
path: root/src/hwf-arm.c
AgeCommit message (Collapse)AuthorFilesLines
2014-11-02Disable NEON for CPUs that are known to have broken NEON implementationJussi Kivilinna1-3/+54
* src/hwf-arm.c (detect_arm_proc_cpuinfo): Add parsing for CPU version information and check if CPU is known to have broken NEON implementation. (_gcry_hwf_detect_arm): Filter out broken HW features. -- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-12-30Parse /proc/cpuinfo for ARM HW featuresJussi Kivilinna1-2/+53
* src/hwf-arm.c [__linux__] (HAS_PROC_CPUINFO) (detect_arm_proc_cpuinfo): New. (_gcry_hwf_detect_arm) [HAS_PROC_CPUINFO]: Check '/proc/cpuinfo' for HW features. -- Some Linux platforms (read: Android) block read access to '/proc/self/auxv', which prevents NEON HW detection. Patch adds alternative check which parses '/proc/cpuinfo' which should be accessable by Android applications. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-12-18Change utf-8 copyright characters to '(C)'Jussi Kivilinna1-1/+1
cipher/blowfish-amd64.S: Change utf-8 encoded copyright character to '(C)'. cipher/blowfish-arm.S: Ditto. cipher/bufhelp.h: Ditto. cipher/camellia-aesni-avx-amd64.S: Ditto. cipher/camellia-aesni-avx2-amd64.S: Ditto. cipher/camellia-arm.S: Ditto. cipher/cast5-amd64.S: Ditto. cipher/cast5-arm.S: Ditto. cipher/cipher-ccm.c: Ditto. cipher/cipher-cmac.c: Ditto. cipher/cipher-gcm.c: Ditto. cipher/cipher-selftest.c: Ditto. cipher/cipher-selftest.h: Ditto. cipher/mac-cmac.c: Ditto. cipher/mac-gmac.c: Ditto. cipher/mac-hmac.c: Ditto. cipher/mac-internal.h: Ditto. cipher/mac.c: Ditto. cipher/rijndael-amd64.S: Ditto. cipher/rijndael-arm.S: Ditto. cipher/salsa20-amd64.S: Ditto. cipher/salsa20-armv7-neon.S: Ditto. cipher/serpent-armv7-neon.S: Ditto. cipher/serpent-avx2-amd64.S: Ditto. cipher/serpent-sse2-amd64.S: Ditto. -- Avoid use of '©' for easier parsing of source for copyright information. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
2013-12-12Move list of hardware features to hwfeatures.c.Werner Koch1-2/+4
* src/global.c (hwflist, disabled_hw_features): Move to .. * src/hwfeatures.c: here. (_gcry_disable_hw_feature): New. (_gcry_enum_hw_features): New. (_gcry_detect_hw_features): Remove arg DISABLED_FEATURES. * src/global.c (print_config, _gcry_vcontrol, global_init): Adjust accordingly. -- It is better to keep the hardware feature infor at one place. Signed-off-by: Werner Koch <wk@gnupg.org>
2013-08-31Add ARM HW feature detection module and add NEON detectionJussi Kivilinna1-0/+113
* configure.ac: Add option --disable-neon-support. (HAVE_GCC_INLINE_ASM_NEON): New. (ENABLE_NEON_SUPPORT): New. [arm]: Add 'hwf-arm.lo' as HW feature module. * src/Makefile.am: Add 'hwf-arm.c'. * src/g10lib.h (HWF_ARM_NEON): New macro. * src/global.c (hwflist): Add HWF_ARM_NEON entry. * src/hwf-arm.c: New file. * src/hwf-common.h (_gcry_hwf_detect_arm): New prototype. * src/hwfeatures.c (_gcry_detect_hw_features) [HAVE_CPU_ARCH_ARM]: Add call to _gcry_hwf_detect_arm. -- Add HW detection module for detecting ARM NEON instruction set. ARM does not have cpuid instruction so we have to rely on OS to pass feature set information to user-space. For linux, NEON support can be detected by parsing '/proc/self/auxv' for hardware capabilities information. For other OSes, NEON can be detected by checking if platform/compiler only supports NEON capable CPUs (by check if __ARM_NEON__ macro is defined). Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>