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glibc/sysdeps/powerpc/ldsodefs.h

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Move ldsodefs.h audit definitions to sysdeps directories.
2012-07-25 16:03:02 +00:00
/* Run-time dynamic linker data structures for loaded ELF shared objects.
Update copyright dates with scripts/update-copyrights.
2017-01-01 00:14:16 +00:00
Copyright (C) 1995-2017 Free Software Foundation, Inc.
Move ldsodefs.h audit definitions to sysdeps directories.
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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/>. */
#ifndef _POWERPC_LDSODEFS_H
#define _POWERPC_LDSODEFS_H 1
#include <elf.h>
powerpc: POWER8 memcpy optimization for cached memory On POWER8, unaligned memory accesses to cached memory has little impact on performance as opposed to its ancestors. It is disabled by default and will only be available when the tunable glibc.tune.cached_memopt is set to 1. __memcpy_power8_cached __memcpy_power7 ============================================================ max-size=4096: 33325.70 ( 12.65%) 38153.00 max-size=8192: 32878.20 ( 11.17%) 37012.30 max-size=16384: 33782.20 ( 11.61%) 38219.20 max-size=32768: 33296.20 ( 11.30%) 37538.30 max-size=65536: 33765.60 ( 10.53%) 37738.40 * manual/tunables.texi (Hardware Capability Tunables): Document glibc.tune.cached_memopt. * sysdeps/powerpc/cpu-features.c: New file. * sysdeps/powerpc/cpu-features.h: New file. * sysdeps/powerpc/dl-procinfo.c [!IS_IN(ldconfig)]: Add _dl_powerpc_cpu_features. * sysdeps/powerpc/dl-tunables.list: New file. * sysdeps/powerpc/ldsodefs.h: Include cpu-features.h. * sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h (INIT_ARCH): Initialize use_aligned_memopt. * sysdeps/powerpc/powerpc64/dl-machine.h [defined(SHARED && IS_IN(rtld))]: Restrict dl_platform_init availability and initialize CPU features used by tunables. * sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines): Add memcpy-power8-cached. * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: Add __memcpy_power8_cached. * sysdeps/powerpc/powerpc64/multiarch/memcpy.c: Likewise. * sysdeps/powerpc/powerpc64/multiarch/memcpy-power8-cached.S: New file. Reviewed-by: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
2017-12-11 19:39:42 +00:00
#include <cpu-features.h>
Move ldsodefs.h audit definitions to sysdeps directories.
2012-07-25 16:03:02 +00:00
struct La_ppc32_regs;
struct La_ppc32_retval;
struct La_ppc64_regs;
struct La_ppc64_retval;
PowerPC64 ELFv2 ABI 5/6: LD_AUDIT interface changes The ELFv2 ABI changes the calling convention by passing and returning structures in registers in more cases than the old ABI: http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01145.html http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01147.html For the most part, this does not affect glibc, since glibc assembler files do not use structure parameters / return values. However, one place is affected: the LD_AUDIT interface provides a structure to the audit routine that contains all registers holding function argument and return values for the intercepted PLT call. Since the new ABI now sometimes uses registers to return values that were never used for this purpose in the old ABI, this structure has to be extended. To force audit routines to be modified for the new ABI if necessary, the patch defines v2 variants of the la_ppc64 types and routines. In addition, the patch contains two unrelated changes to the PLT trampoline routines: it fixes a bug where FPR return values were stored in the wrong place, and it removes the unnecessary save/restore of CR.
2013-12-04 12:59:37 +00:00
struct La_ppc64v2_regs;
struct La_ppc64v2_retval;
Move ldsodefs.h audit definitions to sysdeps directories.
2012-07-25 16:03:02 +00:00
#define ARCH_PLTENTER_MEMBERS \
Elf32_Addr (*ppc32_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *, \
uintptr_t *, struct La_ppc32_regs *, \
unsigned int *, const char *name, \
long int *framesizep); \
Elf64_Addr (*ppc64_gnu_pltenter) (Elf64_Sym *, unsigned int, uintptr_t *, \
uintptr_t *, struct La_ppc64_regs *, \
unsigned int *, const char *name, \
PowerPC64 ELFv2 ABI 5/6: LD_AUDIT interface changes The ELFv2 ABI changes the calling convention by passing and returning structures in registers in more cases than the old ABI: http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01145.html http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01147.html For the most part, this does not affect glibc, since glibc assembler files do not use structure parameters / return values. However, one place is affected: the LD_AUDIT interface provides a structure to the audit routine that contains all registers holding function argument and return values for the intercepted PLT call. Since the new ABI now sometimes uses registers to return values that were never used for this purpose in the old ABI, this structure has to be extended. To force audit routines to be modified for the new ABI if necessary, the patch defines v2 variants of the la_ppc64 types and routines. In addition, the patch contains two unrelated changes to the PLT trampoline routines: it fixes a bug where FPR return values were stored in the wrong place, and it removes the unnecessary save/restore of CR.
2013-12-04 12:59:37 +00:00
long int *framesizep); \
Elf64_Addr (*ppc64v2_gnu_pltenter) (Elf64_Sym *, unsigned int, \
uintptr_t *, uintptr_t *, \
struct La_ppc64v2_regs *, \
unsigned int *, const char *name, \
long int *framesizep)
Move ldsodefs.h audit definitions to sysdeps directories.
2012-07-25 16:03:02 +00:00
#define ARCH_PLTEXIT_MEMBERS \
unsigned int (*ppc32_gnu_pltexit) (Elf32_Sym *, unsigned int, \
uintptr_t *, \
uintptr_t *, \
const struct La_ppc32_regs *, \
struct La_ppc32_retval *, \
const char *); \
unsigned int (*ppc64_gnu_pltexit) (Elf64_Sym *, unsigned int, \
uintptr_t *, \
uintptr_t *, \
const struct La_ppc64_regs *, \
PowerPC64 ELFv2 ABI 5/6: LD_AUDIT interface changes The ELFv2 ABI changes the calling convention by passing and returning structures in registers in more cases than the old ABI: http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01145.html http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01147.html For the most part, this does not affect glibc, since glibc assembler files do not use structure parameters / return values. However, one place is affected: the LD_AUDIT interface provides a structure to the audit routine that contains all registers holding function argument and return values for the intercepted PLT call. Since the new ABI now sometimes uses registers to return values that were never used for this purpose in the old ABI, this structure has to be extended. To force audit routines to be modified for the new ABI if necessary, the patch defines v2 variants of the la_ppc64 types and routines. In addition, the patch contains two unrelated changes to the PLT trampoline routines: it fixes a bug where FPR return values were stored in the wrong place, and it removes the unnecessary save/restore of CR.
2013-12-04 12:59:37 +00:00
struct La_ppc64_retval *, \
const char *); \
unsigned int (*ppc64v2_gnu_pltexit) (Elf64_Sym *, unsigned int, \
uintptr_t *, \
uintptr_t *, \
const struct La_ppc64v2_regs *,\
struct La_ppc64v2_retval *, \
const char *)
Move ldsodefs.h audit definitions to sysdeps directories.
2012-07-25 16:03:02 +00:00
#include_next <ldsodefs.h>
#endif
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