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glibc/sysdeps
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Carlos Eduardo Seo 67385a01d2 powerpc: Add hwcap/hwcap2/platform data to TCB. 
This patch adds a new feature for powerpc.  In order to get faster access to
the HWCAP/HWCAP2 bits and platform number (i.e. for implementing
__builtin_cpu_is () / __builtin_cpu_supports () in GCC) without the overhead of
reading from the auxiliary vector, we now reserve space for them in the TCB.
This is an ABI change for GLIBC 2.23.

A new versioned symbol '__parse_hwcap_and_convert_at_platform' is available to
get the data from the auxiliary vector and parse it, and store it for later use
in the TLS initialization code.  This function is called very early
(in _dl_sysdep_start () via DL_PLATFORM_INFO for the dynamic linking case, and
in __libc_start_main () for the static linking case) to make sure the data is
available at the time of TLS initialization.

	* sysdeps/powerpc/Makefile (sysdep-dl-routines): Add hwcapinfo.
	(sysdep_routines): Likewise.
	(sysdep-rtld-routines): Likewise.
	[$(subdir) = nptl](tests): Add test-get_hwcap and test-get_hwcap-static
	[$(subdir) = nptl](tests-static): test-get_hwcap-static
	* sysdeps/powerpc/Versions: Added new
	__parse_hwcap_and_convert_at_platform symbol to GLIBC-2.23.
	* sysdeps/powerpc/hwcapinfo.c: New file.
	(__tcb_parse_hwcap_and_convert_at_platform): New function to initialize
	and parse hwcap, hwcap2 and platform number information.
	* sysdeps/powerpc/hwcapinfo.h: New file.  Creates global variables
	to store HWCAP+HWCAP2 and platform number.
	* sysdeps/powerpc/nptl/tcb-offsets.sym: Added new offsets
	for HWCAP+HWCAP2 and platform number in the TCB.
	* sysdeps/powerpc/nptl/tls.h: New functionality.  Stores
	the HWCAP, HWCAP2 and platform number in the TCB.
	(dtv): Added new fields for HWCAP+HWCAP2 and platform number.
	(TLS_INIT_TP): Included calls to add the hwcap and
	at_platform values in the TCB in TP initialization.
	(TLS_DEFINE_INIT_TP): Likewise.
	(THREAD_GET_HWCAP): New macro.
	(THREAD_SET_HWCAP): Likewise.
	(THREAD_GET_AT_PLATFORM): Likewise.
	(THREAD_SET_AT_PLATFORM): Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h:
	(dl_platform_init): New function that calls
	__parse_hwcap_and_convert_at_platform for the dymanic linking case for
	powerpc32.
	* sysdeps/powerpc/powerpc64/dl-machine.h: Likewise, for powerpc64.
	* sysdeps/powerpc/test-get_hwcap-static.c: New file.  Testcase for
	this functionality, static linking case.
	* sysdeps/powerpc/test-get_hwcap.c: New file.  Likewise, dynamic
	linking case.
	* sysdeps/unix/sysv/linux/powerpc/libc-start.c: Added call to
	__parse_hwcap_and_convert_at_platform for the static linking case.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ld.abilist:
	Included the new __parse_hwcap_and_convert_at_platform symbol in the
	ABI list for GLIBC 2.23.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/ld-le.abilist:
	Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/ld.abilist:
	Likewise.
2015-12-03 13:56:13 -02:00
..
aarch64 [AArch64] Regenerate libm-test-ulps 2015-12-01 12:57:16 +00:00
alpha Move bits/atomic.h to atomic-machine.h (bug 14912). 2015-09-11 20:00:19 +00:00
arm Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
generic Replace MUTEX_INITIALIZER with _LIBC_LOCK_INITIALIZER in generic code 2015-11-24 16:37:15 +01:00
gnu Rename localedir to complocaledir (bug 14259). 2015-11-27 10:22:38 -05:00
hppa Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
i386 Fix hurd build with hidden support 2015-11-25 02:35:18 +01:00
ia64 Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
ieee754 Use hex float constants in sysdeps/ieee754/dbl-64/e_sqrt.c. 2015-12-01 01:01:36 +00:00
init_array
m68k Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
mach Add __CPU_MASK_TYPE for __cpu_mask 2015-12-01 10:25:44 -08:00
microblaze Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
mips MIPS: Wire FCSR.ABS2008 to FCSR.NAN2008 2015-11-28 11:01:16 +00:00
nacl Add __CPU_MASK_TYPE for __cpu_mask 2015-12-01 10:25:44 -08:00
nios2 Fix math_private.h multiple include guards. 2015-11-20 23:46:23 +00:00
nptl Replace MUTEX_INITIALIZER with _LIBC_LOCK_INITIALIZER in generic code 2015-11-24 16:37:15 +01:00
posix Remove signal handling for nanosleep (bug 16364) 2015-11-20 11:16:07 -02:00
powerpc powerpc: Add hwcap/hwcap2/platform data to TCB. 2015-12-03 13:56:13 -02:00
pthread Convert 113 more function definitions to prototype style (files with assertions). 2015-10-20 11:54:09 +00:00
s390 S390: Use __asm__ instead of asm. 2015-11-20 08:56:40 +01:00
sh Convert 231 sysdeps function definitions to prototype style. 2015-10-19 12:04:33 +00:00
sparc Convert 69 more function definitions to prototype style (line wrap cases). 2015-10-19 21:23:47 +00:00
tile tile: define __NO_LONG_DOUBLE_MATH 2015-11-24 14:09:31 -05:00
unix powerpc: Add hwcap/hwcap2/platform data to TCB. 2015-12-03 13:56:13 -02:00
wordsize-32
wordsize-64 Add LFS support for fts functions (bug 11460) 2015-11-06 11:24:16 +01:00
x86 Update family and model detection for AMD CPUs 2015-11-30 09:01:31 -08:00
x86_64 Better workaround for aliases of *_finite symbols in vector math library. 2015-11-27 16:22:26 +03:00