peter/libgcrypt - libgcrypt source repository for Peter

Age	Commit message (Collapse)	Author	Files	Lines
2013-08-31	Add ARM HW feature detection module and add NEON detection	Jussi Kivilinna	1	-0/+1
	* 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>
2012-12-21	Prepare for hardware feature detection on other platforms.	Werner Koch	1	-0/+26
	* configure.ac (GCRYPT_HWF_MODULES): New. (HAVE_CPU_ARCH_X86, HAVE_CPU_ARCH_ALPHA, HAVE_CPU_ARCH_SPARC) (HAVE_CPU_ARCH_MIPS, HAVE_CPU_ARCH_M68K, HAVE_CPU_ARCH_PPC) (HAVE_CPU_ARCH_ARM): New AC_DEFINEs. * mpi/config.links (mpi_cpu_arch): New. * src/global.c (print_config): Print new tag "cpu-arch". * src/Makefile.am (libgcrypt_la_SOURCES): Add hwf-common.h (EXTRA_libgcrypt_la_SOURCES): New. (gcrypt_hwf_modules): New. (libgcrypt_la_DEPENDENCIES, libgcrypt_la_LIBADD): Add that one. * src/hwfeatures.c: Factor most code out to ... * src/hwf-x86.c: New file. (detect_x86_gnuc): Return the feature vector. (_gcry_hwf_detect_x86): New. * src/hwf-common.h: New. * src/hwfeatures.c (_gcry_detect_hw_features): Dispatch using HAVE_CPU_ARCH_ macros. Signed-off-by: Werner Koch <wk@gnupg.org>