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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.
This commit is contained in:
Carlos Eduardo Seo
Tulio Magno Quites Machado Filho
parent
db340c904d
commit
67385a01d2
45
ChangeLog
45
ChangeLog
@ -1,3 +1,48 @@
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2015-12-03 Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
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* sysdeps/powerpc/Makefile (sysdep-dl-routines): Add hwcapinfo.
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(sysdep_routines): Likewise.
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(sysdep-rtld-routines): Likewise.
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[$(subdir) = nptl](tests): Add test-get_hwcap and test-get_hwcap-static
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[$(subdir) = nptl](tests-static): test-get_hwcap-static
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* sysdeps/powerpc/Versions: Added new
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__parse_hwcap_and_convert_at_platform symbol to GLIBC-2.23.
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* sysdeps/powerpc/hwcapinfo.c: New file.
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(__tcb_parse_hwcap_and_convert_at_platform): New function to initialize
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and parse hwcap, hwcap2 and platform number information.
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* sysdeps/powerpc/hwcapinfo.h: New file. Creates global variables
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to store HWCAP+HWCAP2 and platform number.
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* sysdeps/powerpc/nptl/tcb-offsets.sym: Added new offsets
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for HWCAP+HWCAP2 and platform number in the TCB.
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* sysdeps/powerpc/nptl/tls.h: New functionality. Stores
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the HWCAP, HWCAP2 and platform number in the TCB.
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(dtv): Added new fields for HWCAP+HWCAP2 and platform number.
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(TLS_INIT_TP): Included calls to add the hwcap and
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at_platform values in the TCB in TP initialization.
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(TLS_DEFINE_INIT_TP): Likewise.
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(THREAD_GET_HWCAP): New macro.
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(THREAD_SET_HWCAP): Likewise.
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(THREAD_GET_AT_PLATFORM): Likewise.
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(THREAD_SET_AT_PLATFORM): Likewise.
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* sysdeps/powerpc/powerpc32/dl-machine.h:
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(dl_platform_init): New function that calls
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__parse_hwcap_and_convert_at_platform for the dymanic linking case for
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powerpc32.
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* sysdeps/powerpc/powerpc64/dl-machine.h: Likewise, for powerpc64.
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* sysdeps/powerpc/test-get_hwcap-static.c: New file. Testcase for
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this functionality, static linking case.
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* sysdeps/powerpc/test-get_hwcap.c: New file. Likewise, dynamic
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linking case.
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* sysdeps/unix/sysv/linux/powerpc/libc-start.c: Added call to
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__parse_hwcap_and_convert_at_platform for the static linking case.
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* sysdeps/unix/sysv/linux/powerpc/powerpc32/ld.abilist:
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Included the new __parse_hwcap_and_convert_at_platform symbol in the
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ABI list for GLIBC 2.23.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/ld-le.abilist:
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Likewise.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/ld.abilist:
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Likewise.
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2015-12-02 Ludovic Courtès <ludo@gnu.org>
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* configure.ac: Use 'pwd -P' instead of '/bin/pwd'.
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@ -4,10 +4,10 @@ endif
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ifeq ($(subdir),elf)
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# extra shared linker files to link into dl-allobjs.so and libc
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sysdep-dl-routines += dl-machine
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sysdep_routines += dl-machine
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sysdep-dl-routines += dl-machine hwcapinfo
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sysdep_routines += dl-machine hwcapinfo
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# extra shared linker files to link only into dl-allobjs.so
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sysdep-rtld-routines += dl-machine
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sysdep-rtld-routines += dl-machine hwcapinfo
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# Don't optimize GD tls sequence to LE.
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LDFLAGS-tst-tlsopt-powerpc += -Wl,--no-tls-optimize
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tests += tst-tlsopt-powerpc
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@ -26,6 +26,11 @@ gen-as-const-headers += rtld-global-offsets.sym
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gen-as-const-headers += locale-defines.sym
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endif
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ifeq ($(subdir),nptl)
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tests += test-get_hwcap test-get_hwcap-static
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tests-static += test-get_hwcap-static
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endif
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ifeq ($(subdir),misc)
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sysdep_headers += sys/platform/ppc.h
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tests += test-gettimebase
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@ -20,4 +20,9 @@ ld {
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GLIBC_2.22 {
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__tls_get_addr_opt;
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}
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GLIBC_2.23 {
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# Symbol used to version control when the ABI started to specify that HWCAP
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# and AT_PLATFORM data should be stored into the TCB.
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__parse_hwcap_and_convert_at_platform;
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}
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}
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76
sysdeps/powerpc/hwcapinfo.c
Normal file
76
sysdeps/powerpc/hwcapinfo.c
Normal file
@ -0,0 +1,76 @@
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/* powerpc HWCAP/HWCAP2 and AT_PLATFORM data pre-processing.
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Copyright (C) 2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <unistd.h>
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#include <shlib-compat.h>
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#include <dl-procinfo.h>
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uint64_t __tcb_hwcap __attribute__ ((visibility ("hidden")));
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uint32_t __tcb_platform __attribute__ ((visibility ("hidden")));
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/* This function parses the HWCAP/HWCAP2 fields, adding the previous supported
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ISA bits, as well as converting the AT_PLATFORM string to a number. This
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data is stored in two global variables that can be used later by the
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powerpc-specific code to store it into the TCB. */
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void
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__tcb_parse_hwcap_and_convert_at_platform (void)
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{
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uint64_t h1, h2;
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/* Read AT_PLATFORM string from auxv and convert it to a number. */
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__tcb_platform = _dl_string_platform (GLRO (dl_platform));
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/* Read HWCAP and HWCAP2 from auxv. */
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h1 = GLRO (dl_hwcap);
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h2 = GLRO (dl_hwcap2);
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/* hwcap contains only the latest supported ISA, the code checks which is
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and fills the previous supported ones. */
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if (h2 & PPC_FEATURE2_ARCH_2_07)
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h1 |= PPC_FEATURE_ARCH_2_06
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| PPC_FEATURE_ARCH_2_05
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| PPC_FEATURE_POWER5_PLUS
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| PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (h1 & PPC_FEATURE_ARCH_2_06)
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h1 |= PPC_FEATURE_ARCH_2_05
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| PPC_FEATURE_POWER5_PLUS
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| PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (h1 & PPC_FEATURE_ARCH_2_05)
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h1 |= PPC_FEATURE_POWER5_PLUS
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| PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (h1 & PPC_FEATURE_POWER5_PLUS)
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h1 |= PPC_FEATURE_POWER5
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| PPC_FEATURE_POWER4;
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else if (h1 & PPC_FEATURE_POWER5)
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h1 |= PPC_FEATURE_POWER4;
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/* Consolidate both HWCAP and HWCAP2 into a single doubleword so that
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we can read both in a single load later. */
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__tcb_hwcap = h2;
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__tcb_hwcap = (h1 << 32) | __tcb_hwcap;
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}
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#if IS_IN (rtld)
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versioned_symbol (ld, __tcb_parse_hwcap_and_convert_at_platform, \
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__parse_hwcap_and_convert_at_platform, GLIBC_2_23);
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#endif
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29
sysdeps/powerpc/hwcapinfo.h
Normal file
29
sysdeps/powerpc/hwcapinfo.h
Normal file
@ -0,0 +1,29 @@
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/* powerpc HWCAP/HWCAP2 and AT_PLATFORM data pre-processing.
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Copyright (C) 2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdint.h>
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#ifndef HWCAPINFO_H
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# define HWCAPINFO_H
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extern uint64_t __tcb_hwcap attribute_hidden;
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extern uint32_t __tcb_platform attribute_hidden;
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extern void __tcb_parse_hwcap_and_convert_at_platform (void);
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#endif
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@ -19,7 +19,15 @@ POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (
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TAR_SAVE (offsetof (tcbhead_t, tar_save) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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DSO_SLOT1 (offsetof (tcbhead_t, dso_slot1) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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DSO_SLOT2 (offsetof (tcbhead_t, dso_slot2) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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#ifdef __powerpc64__
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TCB_AT_PLATFORM (offsetof (tcbhead_t, at_platform) - TLS_TCB_OFFSET - sizeof(tcbhead_t))
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#endif
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TM_CAPABLE (offsetof (tcbhead_t, tm_capable) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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#ifndef __powerpc64__
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TCB_AT_PLATFORM (offsetof (tcbhead_t, at_platform) - TLS_TCB_OFFSET - sizeof(tcbhead_t))
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PADDING (offsetof (tcbhead_t, padding) - TLS_TCB_OFFSET - sizeof(tcbhead_t))
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#endif
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TCB_HWCAP (offsetof (tcbhead_t, hwcap) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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#ifndef __ASSUME_PRIVATE_FUTEX
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PRIVATE_FUTEX_OFFSET thread_offsetof (header.private_futex)
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#endif
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@ -44,6 +44,8 @@ typedef union dtv
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#ifndef __ASSEMBLER__
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# include <hwcapinfo.h>
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/* Get system call information. */
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# include <sysdep.h>
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@ -63,8 +65,24 @@ typedef union dtv
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are private. */
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typedef struct
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{
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/* Reservation for HWCAP data. To be accessed by GCC in
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__builtin_cpu_supports(), so it is a part of public ABI. */
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uint64_t hwcap;
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/* Reservation for AT_PLATFORM data. To be accessed by GCC in
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__builtin_cpu_is(), so it is a part of public ABI. Since there
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are different ABIs for 32 and 64 bit, we put this field in a
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previously empty padding space for powerpc64. */
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#ifndef __powerpc64__
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/* Padding to maintain alignment. */
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uint32_t padding;
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uint32_t at_platform;
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#endif
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/* Indicate if HTM capable (ISA 2.07). */
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int tm_capable;
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uint32_t tm_capable;
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/* Reservation for AT_PLATFORM data - powerpc64. */
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#ifdef __powerpc64__
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uint32_t at_platform;
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#endif
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/* Reservation for Dynamic System Optimizer ABI. */
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uintptr_t dso_slot2;
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uintptr_t dso_slot1;
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@ -134,7 +152,9 @@ register void *__thread_register __asm__ ("r13");
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# define TLS_INIT_TP(tcbp) \
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({ \
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__thread_register = (void *) (tcbp) + TLS_TCB_OFFSET; \
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THREAD_SET_TM_CAPABLE (GLRO (dl_hwcap2) & PPC_FEATURE2_HAS_HTM ? 1 : 0); \
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THREAD_SET_TM_CAPABLE (__tcb_hwcap & PPC_FEATURE2_HAS_HTM ? 1 : 0); \
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THREAD_SET_HWCAP (__tcb_hwcap); \
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THREAD_SET_AT_PLATFORM (__tcb_platform); \
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NULL; \
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})
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@ -142,7 +162,11 @@ register void *__thread_register __asm__ ("r13");
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# define TLS_DEFINE_INIT_TP(tp, pd) \
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void *tp = (void *) (pd) + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE; \
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(((tcbhead_t *) ((char *) tp - TLS_TCB_OFFSET))[-1].tm_capable) = \
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THREAD_GET_TM_CAPABLE ();
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THREAD_GET_TM_CAPABLE (); \
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(((tcbhead_t *) ((char *) tp - TLS_TCB_OFFSET))[-1].hwcap) = \
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THREAD_GET_HWCAP (); \
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(((tcbhead_t *) ((char *) tp - TLS_TCB_OFFSET))[-1].at_platform) = \
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THREAD_GET_AT_PLATFORM ();
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/* Return the address of the dtv for the current thread. */
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# define THREAD_DTV() \
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@ -203,6 +227,20 @@ register void *__thread_register __asm__ ("r13");
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# define THREAD_SET_TM_CAPABLE(value) \
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(THREAD_GET_TM_CAPABLE () = (value))
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/* hwcap field in TCB head. */
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# define THREAD_GET_HWCAP() \
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(((tcbhead_t *) ((char *) __thread_register \
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- TLS_TCB_OFFSET))[-1].hwcap)
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# define THREAD_SET_HWCAP(value) \
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(THREAD_GET_HWCAP () = (value))
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/* at_platform field in TCB head. */
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# define THREAD_GET_AT_PLATFORM() \
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(((tcbhead_t *) ((char *) __thread_register \
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- TLS_TCB_OFFSET))[-1].at_platform)
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# define THREAD_SET_AT_PLATFORM(value) \
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(THREAD_GET_AT_PLATFORM () = (value))
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/* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some
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different value to mean unset l_tls_offset. */
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# define NO_TLS_OFFSET -1
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@ -24,6 +24,7 @@
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#include <assert.h>
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#include <dl-tls.h>
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#include <dl-irel.h>
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#include <hwcapinfo.h>
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/* Translate a processor specific dynamic tag to the index
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in l_info array. */
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@ -150,6 +151,19 @@ __elf_preferred_address(struct link_map *loader, size_t maplength,
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#define ELF_MACHINE_NO_REL 1
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#define ELF_MACHINE_NO_RELA 0
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/* We define an initialization function to initialize HWCAP/HWCAP2 and
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platform data so it can be copied into the TCB later. This is called
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very early in _dl_sysdep_start for dynamically linked binaries. */
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#ifdef SHARED
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# define DL_PLATFORM_INIT dl_platform_init ()
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static inline void __attribute__ ((unused))
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dl_platform_init (void)
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{
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__tcb_parse_hwcap_and_convert_at_platform ();
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}
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#endif
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/* Set up the loaded object described by MAP so its unrelocated PLT
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entries will jump to the on-demand fixup code in dl-runtime.c.
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Also install a small trampoline to be used by entries that have
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@ -26,6 +26,7 @@
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#include <sys/param.h>
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#include <dl-tls.h>
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#include <sysdep.h>
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#include <hwcapinfo.h>
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/* Translate a processor specific dynamic tag to the index
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in l_info array. */
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@ -296,6 +297,19 @@ BODY_PREFIX "_dl_start_user:\n" \
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#define ELF_MACHINE_NO_REL 1
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#define ELF_MACHINE_NO_RELA 0
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/* We define an initialization function to initialize HWCAP/HWCAP2 and
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platform data so it can be copied into the TCB later. This is called
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very early in _dl_sysdep_start for dynamically linked binaries. */
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#ifdef SHARED
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# define DL_PLATFORM_INIT dl_platform_init ()
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static inline void __attribute__ ((unused))
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dl_platform_init (void)
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{
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__tcb_parse_hwcap_and_convert_at_platform ();
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}
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#endif
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/* Stuff for the PLT. */
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#if _CALL_ELF != 2
|
||||
#define PLT_INITIAL_ENTRY_WORDS 3
|
||||
|
||||
23
sysdeps/powerpc/test-get_hwcap-static.c
Normal file
23
sysdeps/powerpc/test-get_hwcap-static.c
Normal file
@ -0,0 +1,23 @@
|
||||
/* Check __ppc_get_hwcap() and __ppc_get_at_plaftorm() functionality.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
/* Tests if the hwcap, hwcap2 and platform data are stored in the TCB. */
|
||||
|
||||
#define STATIC_TST_HWCAP 1
|
||||
|
||||
#include "test-get_hwcap.c"
|
||||
188
sysdeps/powerpc/test-get_hwcap.c
Normal file
188
sysdeps/powerpc/test-get_hwcap.c
Normal file
@ -0,0 +1,188 @@
|
||||
/* Check __ppc_get_hwcap() and __ppc_get_at_plaftorm() functionality.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
/* Tests if the hwcap, hwcap2 and platform data are stored in the TCB. */
|
||||
|
||||
#include <inttypes.h>
|
||||
#include <stdio.h>
|
||||
#include <stdint.h>
|
||||
#include <pthread.h>
|
||||
|
||||
#include <sys/auxv.h>
|
||||
|
||||
#include <dl-procinfo.h>
|
||||
|
||||
#ifndef STATIC_TST_HWCAP
|
||||
#undef PROCINFO_DECL
|
||||
#include <dl-procinfo.c>
|
||||
#endif
|
||||
|
||||
/* Offsets copied from tcb-offsets.h. */
|
||||
|
||||
#ifdef __powerpc64__
|
||||
# define __TPREG "r13"
|
||||
# define __HWCAPOFF -28776
|
||||
# define __ATPLATOFF -28764
|
||||
#else
|
||||
# define __TPREG "r2"
|
||||
# define __HWCAPOFF -28736
|
||||
# define __HWCAP2OFF -28732
|
||||
# define __ATPLATOFF -28724
|
||||
#endif
|
||||
|
||||
uint64_t check_tcbhwcap (long tid)
|
||||
{
|
||||
|
||||
uint32_t tcb_at_platform, at_platform;
|
||||
uint64_t hwcap, hwcap2, tcb_hwcap;
|
||||
const char *at_platform_string;
|
||||
|
||||
/* Testing if the hwcap/hwcap2 data is correctly initialized by
|
||||
TLS_TP_INIT. */
|
||||
|
||||
register unsigned long __tp __asm__ (__TPREG);
|
||||
|
||||
#ifdef __powerpc64__
|
||||
__asm__ ("ld %0,%1(%2)\n"
|
||||
: "=r" (tcb_hwcap)
|
||||
: "i" (__HWCAPOFF), "b" (__tp));
|
||||
#else
|
||||
uint64_t h1, h2;
|
||||
|
||||
__asm__ ("lwz %0,%1(%2)\n"
|
||||
: "=r" (h1)
|
||||
: "i" (__HWCAPOFF), "b" (__tp));
|
||||
__asm__ ("lwz %0,%1(%2)\n"
|
||||
: "=r" (h2)
|
||||
: "i" (__HWCAP2OFF), "b" (__tp));
|
||||
tcb_hwcap = (h1 >> 32) << 32 | (h2 >> 32);
|
||||
#endif
|
||||
|
||||
hwcap = getauxval (AT_HWCAP);
|
||||
hwcap2 = getauxval (AT_HWCAP2);
|
||||
|
||||
/* hwcap contains only the latest supported ISA, the code checks which is
|
||||
and fills the previous supported ones. This is necessary because the
|
||||
same is done in hwcapinfo.c when setting the values that are copied to
|
||||
the TCB. */
|
||||
|
||||
if (hwcap2 & PPC_FEATURE2_ARCH_2_07)
|
||||
hwcap |= PPC_FEATURE_ARCH_2_06
|
||||
| PPC_FEATURE_ARCH_2_05
|
||||
| PPC_FEATURE_POWER5_PLUS
|
||||
| PPC_FEATURE_POWER5
|
||||
| PPC_FEATURE_POWER4;
|
||||
else if (hwcap & PPC_FEATURE_ARCH_2_06)
|
||||
hwcap |= PPC_FEATURE_ARCH_2_05
|
||||
| PPC_FEATURE_POWER5_PLUS
|
||||
| PPC_FEATURE_POWER5
|
||||
| PPC_FEATURE_POWER4;
|
||||
else if (hwcap & PPC_FEATURE_ARCH_2_05)
|
||||
hwcap |= PPC_FEATURE_POWER5_PLUS
|
||||
| PPC_FEATURE_POWER5
|
||||
| PPC_FEATURE_POWER4;
|
||||
else if (hwcap & PPC_FEATURE_POWER5_PLUS)
|
||||
hwcap |= PPC_FEATURE_POWER5
|
||||
| PPC_FEATURE_POWER4;
|
||||
else if (hwcap & PPC_FEATURE_POWER5)
|
||||
hwcap |= PPC_FEATURE_POWER4;
|
||||
|
||||
hwcap = (hwcap << 32) + hwcap2;
|
||||
|
||||
if ( tcb_hwcap != hwcap )
|
||||
{
|
||||
printf ("FAIL: __ppc_get_hwcap() - HWCAP is %" PRIx64 ". Should be %"
|
||||
PRIx64 " for thread %ld.\n", tcb_hwcap, hwcap, tid);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Same test for the platform number. */
|
||||
__asm__ ("lwz %0,%1(%2)\n"
|
||||
: "=r" (tcb_at_platform)
|
||||
: "i" (__ATPLATOFF), "b" (__tp));
|
||||
|
||||
at_platform_string = (const char *) getauxval (AT_PLATFORM);
|
||||
at_platform = _dl_string_platform (at_platform_string);
|
||||
|
||||
if ( tcb_at_platform != at_platform )
|
||||
{
|
||||
printf ("FAIL: __ppc_get_at_platform() - AT_PLATFORM is %x. Should be %x"
|
||||
" for thread %ld\n", tcb_at_platform, at_platform, tid);
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void *t1 (void *tid)
|
||||
{
|
||||
if (check_tcbhwcap ((long) tid))
|
||||
{
|
||||
pthread_exit (tid);
|
||||
}
|
||||
|
||||
pthread_exit (NULL);
|
||||
|
||||
}
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
|
||||
pthread_t threads[2];
|
||||
pthread_attr_t attr;
|
||||
pthread_attr_init (&attr);
|
||||
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_JOINABLE);
|
||||
void *status;
|
||||
|
||||
long i = 0;
|
||||
|
||||
/* Check for main. */
|
||||
if (check_tcbhwcap (i))
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Check for other thread. */
|
||||
i++;
|
||||
if (pthread_create (&threads[i], &attr, t1, (void *)i))
|
||||
{
|
||||
printf ("FAIL: error creating thread %ld.\n", i);
|
||||
return 1;
|
||||
}
|
||||
|
||||
pthread_attr_destroy (&attr);
|
||||
if (pthread_join (threads[i], &status))
|
||||
{
|
||||
printf ("FAIL: error joining thread %ld.\n", i);
|
||||
return 1;
|
||||
}
|
||||
if (status)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("PASS: HWCAP, HWCAP2 and AT_PLATFORM are correctly set in the TCB for"
|
||||
" all threads.\n");
|
||||
|
||||
pthread_exit (NULL);
|
||||
|
||||
}
|
||||
|
||||
#define TEST_FUNCTION do_test ()
|
||||
#include "../test-skeleton.c"
|
||||
@ -20,6 +20,9 @@
|
||||
#include <ldsodefs.h>
|
||||
#include <sysdep.h>
|
||||
|
||||
#ifndef SHARED
|
||||
#include <hwcapinfo.h>
|
||||
#endif
|
||||
|
||||
int __cache_line_size attribute_hidden;
|
||||
/* The main work is done in the generic function. */
|
||||
@ -68,15 +71,34 @@ __libc_start_main (int argc, char **argv,
|
||||
rtld_fini = NULL;
|
||||
}
|
||||
|
||||
/* Initialize the __cache_line_size variable from the aux vector. */
|
||||
/* Initialize the __cache_line_size variable from the aux vector. For the
|
||||
static case, we also need _dl_hwcap, _dl_hwcap2 and _dl_platform, so we
|
||||
can call __tcb_parse_hwcap_and_convert_at_platform (). */
|
||||
for (ElfW (auxv_t) * av = auxvec; av->a_type != AT_NULL; ++av)
|
||||
switch (av->a_type)
|
||||
{
|
||||
case AT_DCACHEBSIZE:
|
||||
__cache_line_size = av->a_un.a_val;
|
||||
break;
|
||||
#ifndef SHARED
|
||||
case AT_HWCAP:
|
||||
_dl_hwcap = (unsigned long int) av->a_un.a_val;
|
||||
break;
|
||||
case AT_HWCAP2:
|
||||
_dl_hwcap2 = (unsigned long int) av->a_un.a_val;
|
||||
break;
|
||||
case AT_PLATFORM:
|
||||
_dl_platform = (void *) av->a_un.a_val;
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
|
||||
/* Initialize hwcap/hwcap2 and platform data so it can be copied to
|
||||
the TCB later in __libc_setup_tls (). (static case only). */
|
||||
#ifndef SHARED
|
||||
__tcb_parse_hwcap_and_convert_at_platform ();
|
||||
#endif
|
||||
|
||||
return generic_start_main (stinfo->main, argc, argv, auxvec,
|
||||
stinfo->init, stinfo->fini, rtld_fini,
|
||||
stack_on_entry);
|
||||
|
||||
@ -10,6 +10,8 @@ GLIBC_2.1 __libc_stack_end D 0x4
|
||||
GLIBC_2.1 _dl_mcount F
|
||||
GLIBC_2.22 GLIBC_2.22 A
|
||||
GLIBC_2.22 __tls_get_addr_opt F
|
||||
GLIBC_2.23 GLIBC_2.23 A
|
||||
GLIBC_2.23 __parse_hwcap_and_convert_at_platform F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __tls_get_addr F
|
||||
GLIBC_2.4 GLIBC_2.4 A
|
||||
|
||||
@ -10,3 +10,5 @@ GLIBC_2.17 malloc F
|
||||
GLIBC_2.17 realloc F
|
||||
GLIBC_2.22 GLIBC_2.22 A
|
||||
GLIBC_2.22 __tls_get_addr_opt F
|
||||
GLIBC_2.23 GLIBC_2.23 A
|
||||
GLIBC_2.23 __parse_hwcap_and_convert_at_platform F
|
||||
|
||||
@ -1,5 +1,7 @@
|
||||
GLIBC_2.22 GLIBC_2.22 A
|
||||
GLIBC_2.22 __tls_get_addr_opt F
|
||||
GLIBC_2.23 GLIBC_2.23 A
|
||||
GLIBC_2.23 __parse_hwcap_and_convert_at_platform F
|
||||
GLIBC_2.3 GLIBC_2.3 A
|
||||
GLIBC_2.3 __libc_memalign F
|
||||
GLIBC_2.3 __libc_stack_end D 0x8
|
||||
|
||||
Loading…
Reference in New Issue
Block a user