glibc/sysdeps/x86_64/nptl/tls.h

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/* Definition for thread-local data handling. nptl/x86_64 version.
Copyright (C) 2002-2017 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/>. */
#ifndef _TLS_H
#define _TLS_H 1
#ifndef __ASSEMBLER__
# include <asm/prctl.h> /* For ARCH_SET_FS. */
* csu/elf-init.c (__libc_csu_fini): Don't do anything here. * sysdeps/generic/libc-start.c: Don't register program destructor here. * dlfcn/Makefile: Add rules to build dlfcn.c. (LDFLAGS-dl.so): Removed. * dlfcn/dlclose.c: _dl_close is now in ld.so, use function pointer table. * dlfcn/dlmopen.c: Likewise for _dl_open. * dlfcn/dlopen.c: Likewise. * dlfcn/dlopenold.c: Likewise. * elf/dl-libc.c: Likewise for _dl_open and _dl_close. * elf/Makefile (routines): Remove dl-open and dl-close. (dl-routines): Add dl-open, dl-close, and dl-trampoline. Add rules to build and run tst-audit1. * elf/tst-audit1.c: New file. * elf/tst-auditmod1.c: New file. * elf/Versions [libc]: Remove _dl_open and _dl_close. * elf/dl-close.c: Change for use inside ld.so instead of libc.so. * elf/dl-open.c: Likewise. * elf/dl-debug.c (_dl_debug_initialize): Allow reinitialization, signaled by nonzero parameter. * elf/dl-init.c: Fix use of r_state. * elf/dl-load.c: Likewise. * elf/dl-close.c: Add auditing checkpoints. * elf/dl-open.c: Likewise. * elf/dl-fini.c: Likewise. * elf/dl-load.c: Likewise. * elf/dl-sym.c: Likewise. * sysdeps/generic/libc-start.c: Likewise. * elf/dl-object.c: Allocate memory for auditing information. * elf/dl-reloc.c: Remove RESOLV. We now always need the map. Correctly initialize slotinfo. * elf/dynamic-link.h: Adjust after removal of RESOLV. * sysdeps/hppa/dl-lookupcfg.h: Likewise. * sysdeps/ia64/dl-lookupcfg.h: Likewise. * sysdeps/powerpc/powerpc64/dl-lookupcfg.h: Removed. * elf/dl-runtime.c (_dl_fixup): Little cleanup. (_dl_profile_fixup): New parameters to point to register struct and variable for frame size. Add auditing checkpoints. (_dl_call_pltexit): New function. Don't define trampoline code here. * elf/rtld.c: Recognize LD_AUDIT. Load modules on startup. Remove all the functions from _rtld_global_ro which only _dl_open and _dl_close needed. Add auditing checkpoints. * elf/link.h: Define symbols for auditing interfaces. * include/link.h: Likewise. * include/dlfcn.h: Define __RTLD_AUDIT. Remove prototypes for _dl_open and _dl_close. Adjust access to argc and argv in libdl. * dlfcn/dlfcn.c: New file. * sysdeps/generic/dl-lookupcfg.h: Remove all content now that RESOLVE is gone. * sysdeps/generic/ldsodefs.h: Add definitions for auditing interfaces. * sysdeps/generic/unsecvars.h: Add LD_AUDIT. * sysdeps/i386/dl-machine.h: Remove trampoline code here. Adjust for removal of RESOLVE. * sysdeps/x86_64/dl-machine.h: Likewise. * sysdeps/generic/dl-trampoline.c: New file. * sysdeps/i386/dl-trampoline.c: New file. * sysdeps/x86_64/dl-trampoline.c: New file. * sysdeps/generic/dl-tls.c: Cleanups. Fixup for dtv_t change. Fix updating of DTV. * sysdeps/generic/libc-tls.c: Likewise. * sysdeps/arm/bits/link.h: Renamed to ... * sysdeps/arm/buts/linkmap.h: ...this. * sysdeps/generic/bits/link.h: Renamed to... * sysdeps/generic/bits/linkmap.h: ...this. * sysdeps/hppa/bits/link.h: Renamed to... * sysdeps/hppa/bits/linkmap.h: ...this. * sysdeps/hppa/i386/link.h: Renamed to... * sysdeps/hppa/i386/linkmap.h: ...this. * sysdeps/hppa/ia64/link.h: Renamed to... * sysdeps/hppa/ia64/linkmap.h: ...this. * sysdeps/hppa/s390/link.h: Renamed to... * sysdeps/hppa/s390/linkmap.h: ...this. * sysdeps/hppa/sh/link.h: Renamed to... * sysdeps/hppa/sh/linkmap.h: ...this. * sysdeps/hppa/x86_64/link.h: Renamed to... * sysdeps/hppa/x86_64/linkmap.h: ...this. 2005-01-06 Ulrich Drepper <drepper@redhat.com> * allocatestack.c (init_one_static_tls): Adjust initialization of DTV entry for static tls deallocation fix. * sysdeps/alpha/tls.h (dtv_t): Change pointer type to be struct which also contains information whether the memory pointed to is static TLS or not. * sysdeps/i386/tls.h: Likewise. * sysdeps/ia64/tls.h: Likewise. * sysdeps/powerpc/tls.h: Likewise. * sysdeps/s390/tls.h: Likewise. * sysdeps/sh/tls.h: Likewise. * sysdeps/sparc/tls.h: Likewise. * sysdeps/x86_64/tls.h: Likewise.
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# include <stdbool.h>
# include <stddef.h>
# include <stdint.h>
# include <stdlib.h>
# include <sysdep.h>
Narrowing the visibility of libc-internal.h even further. posix/wordexp-test.c used libc-internal.h for PTR_ALIGN_DOWN; similar to what was done with libc-diag.h, I have split the definitions of cast_to_integer, ALIGN_UP, ALIGN_DOWN, PTR_ALIGN_UP, and PTR_ALIGN_DOWN to a new header, libc-pointer-arith.h. It then occurred to me that the remaining declarations in libc-internal.h are mostly to do with early initialization, and probably most of the files including it, even in the core code, don't need it anymore. Indeed, only 19 files actually need what remains of libc-internal.h. 23 others need libc-diag.h instead, and 12 need libc-pointer-arith.h instead. No file needs more than one of them, and 16 don't need any of them! So, with this patch, libc-internal.h stops including libc-diag.h as well as losing the pointer arithmetic macros, and all including files are adjusted. * include/libc-pointer-arith.h: New file. Define cast_to_integer, ALIGN_UP, ALIGN_DOWN, PTR_ALIGN_UP, and PTR_ALIGN_DOWN here. * include/libc-internal.h: Definitions of above macros moved from here. Don't include libc-diag.h anymore either. * posix/wordexp-test.c: Include stdint.h and libc-pointer-arith.h. Don't include libc-internal.h. * debug/pcprofile.c, elf/dl-tunables.c, elf/soinit.c, io/openat.c * io/openat64.c, misc/ptrace.c, nptl/pthread_clock_gettime.c * nptl/pthread_clock_settime.c, nptl/pthread_cond_common.c * string/strcoll_l.c, sysdeps/nacl/brk.c * sysdeps/unix/clock_settime.c * sysdeps/unix/sysv/linux/i386/get_clockfreq.c * sysdeps/unix/sysv/linux/ia64/get_clockfreq.c * sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c: Don't include libc-internal.h. * elf/get-dynamic-info.h, iconv/loop.c * iconvdata/iso-2022-cn-ext.c, locale/weight.h, locale/weightwc.h * misc/reboot.c, nis/nis_table.c, nptl_db/thread_dbP.h * nscd/connections.c, resolv/res_send.c, soft-fp/fmadf4.c * soft-fp/fmasf4.c, soft-fp/fmatf4.c, stdio-common/vfscanf.c * sysdeps/ieee754/dbl-64/e_lgamma_r.c * sysdeps/ieee754/dbl-64/k_rem_pio2.c * sysdeps/ieee754/flt-32/e_lgammaf_r.c * sysdeps/ieee754/flt-32/k_rem_pio2f.c * sysdeps/ieee754/ldbl-128/k_tanl.c * sysdeps/ieee754/ldbl-128ibm/k_tanl.c * sysdeps/ieee754/ldbl-96/e_lgammal_r.c * sysdeps/ieee754/ldbl-96/k_tanl.c, sysdeps/nptl/futex-internal.h: Include libc-diag.h instead of libc-internal.h. * elf/dl-load.c, elf/dl-reloc.c, locale/programs/locarchive.c * nptl/nptl-init.c, string/strcspn.c, string/strspn.c * malloc/malloc.c, sysdeps/i386/nptl/tls.h * sysdeps/nacl/dl-map-segments.h, sysdeps/x86_64/atomic-machine.h * sysdeps/unix/sysv/linux/spawni.c * sysdeps/x86_64/nptl/tls.h: Include libc-pointer-arith.h instead of libc-internal.h. * elf/get-dynamic-info.h, sysdeps/nacl/dl-map-segments.h * sysdeps/x86_64/atomic-machine.h: Add multiple include guard.
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# include <libc-pointer-arith.h> /* For cast_to_integer. */
# include <kernel-features.h>
# include <dl-dtv.h>
/* Replacement type for __m128 since this file is included by ld.so,
which is compiled with -mno-sse. It must not change the alignment
of rtld_savespace_sse. */
typedef struct
{
int i[4];
} __128bits;
typedef struct
{
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void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
int gscope_flag;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
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unsigned long int vgetcpu_cache[2];
# ifndef __ASSUME_PRIVATE_FUTEX
int private_futex;
# else
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int __glibc_reserved1;
# endif
Save and restore vector registers in x86-64 ld.so This patch adds SSE, AVX and AVX512 versions of _dl_runtime_resolve and _dl_runtime_profile, which save and restore the first 8 vector registers used for parameter passing. elf_machine_runtime_setup selects the proper _dl_runtime_resolve or _dl_runtime_profile based on _dl_x86_cpu_features. It avoids race condition caused by FOREIGN_CALL macros, which are only used for x86-64. Performance impact of saving and restoring 8 vector registers are negligible on Nehalem, Sandy Bridge, Ivy Bridge and Haswell when ld.so is optimized with SSE2. [BZ #15128] * sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add ifuncmain8. (modules-names): Add ifuncmod8. ($(objpfx)ifuncmain8): New rule. * sysdeps/x86_64/dl-machine.h: Include <dl-procinfo.h> and <cpuid.h>. (elf_machine_runtime_setup): Use _dl_runtime_resolve_sse, _dl_runtime_resolve_avx, or _dl_runtime_resolve_avx512, _dl_runtime_profile_sse, _dl_runtime_profile_avx, or _dl_runtime_profile_avx512, based on HAS_ARCH_FEATURE. * sysdeps/x86_64/dl-trampoline.S: Rewrite. * sysdeps/x86_64/dl-trampoline.h: Likewise. * sysdeps/x86_64/ifuncmain8.c: New file. * sysdeps/x86_64/ifuncmod8.c: Likewise. * sysdeps/x86_64/nptl/tcb-offsets.sym (RTLD_SAVESPACE_SSE): Removed. * sysdeps/x86_64/nptl/tls.h (__128bits): Removed. (tcbhead_t): Change rtld_must_xmm_save to __glibc_unused1. Change rtld_savespace_sse to __glibc_unused2. (RTLD_CHECK_FOREIGN_CALL): Removed. (RTLD_ENABLE_FOREIGN_CALL): Likewise. (RTLD_PREPARE_FOREIGN_CALL): Likewise. (RTLD_FINALIZE_FOREIGN_CALL): Likewise.
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int __glibc_unused1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[4];
/* GCC split stack support. */
void *__private_ss;
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long int __glibc_reserved2;
Save and restore vector registers in x86-64 ld.so This patch adds SSE, AVX and AVX512 versions of _dl_runtime_resolve and _dl_runtime_profile, which save and restore the first 8 vector registers used for parameter passing. elf_machine_runtime_setup selects the proper _dl_runtime_resolve or _dl_runtime_profile based on _dl_x86_cpu_features. It avoids race condition caused by FOREIGN_CALL macros, which are only used for x86-64. Performance impact of saving and restoring 8 vector registers are negligible on Nehalem, Sandy Bridge, Ivy Bridge and Haswell when ld.so is optimized with SSE2. [BZ #15128] * sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add ifuncmain8. (modules-names): Add ifuncmod8. ($(objpfx)ifuncmain8): New rule. * sysdeps/x86_64/dl-machine.h: Include <dl-procinfo.h> and <cpuid.h>. (elf_machine_runtime_setup): Use _dl_runtime_resolve_sse, _dl_runtime_resolve_avx, or _dl_runtime_resolve_avx512, _dl_runtime_profile_sse, _dl_runtime_profile_avx, or _dl_runtime_profile_avx512, based on HAS_ARCH_FEATURE. * sysdeps/x86_64/dl-trampoline.S: Rewrite. * sysdeps/x86_64/dl-trampoline.h: Likewise. * sysdeps/x86_64/ifuncmain8.c: New file. * sysdeps/x86_64/ifuncmod8.c: Likewise. * sysdeps/x86_64/nptl/tcb-offsets.sym (RTLD_SAVESPACE_SSE): Removed. * sysdeps/x86_64/nptl/tls.h (__128bits): Removed. (tcbhead_t): Change rtld_must_xmm_save to __glibc_unused1. Change rtld_savespace_sse to __glibc_unused2. (RTLD_CHECK_FOREIGN_CALL): Removed. (RTLD_ENABLE_FOREIGN_CALL): Likewise. (RTLD_PREPARE_FOREIGN_CALL): Likewise. (RTLD_FINALIZE_FOREIGN_CALL): Likewise.
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/* Must be kept even if it is no longer used by glibc since programs,
like AddressSanitizer, depend on the size of tcbhead_t. */
__128bits __glibc_unused2[8][4] __attribute__ ((aligned (32)));
void *__padding[8];
} tcbhead_t;
#else /* __ASSEMBLER__ */
# include <tcb-offsets.h>
#endif
/* Alignment requirement for the stack. */
#define STACK_ALIGN 16
#ifndef __ASSEMBLER__
/* Get system call information. */
# include <sysdep.h>
#ifndef LOCK_PREFIX
# ifdef UP
# define LOCK_PREFIX /* nothing */
# else
# define LOCK_PREFIX "lock;"
# endif
#endif
/* This is the size of the initial TCB. Can't be just sizeof (tcbhead_t),
because NPTL getpid, __libc_alloca_cutoff etc. need (almost) the whole
struct pthread even when not linked with -lpthread. */
# define TLS_INIT_TCB_SIZE sizeof (struct pthread)
/* Alignment requirements for the initial TCB. */
# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
/* This is the size of the TCB. */
# define TLS_TCB_SIZE sizeof (struct pthread)
/* Alignment requirements for the TCB. */
# define TLS_TCB_ALIGN __alignof__ (struct pthread)
/* The TCB can have any size and the memory following the address the
thread pointer points to is unspecified. Allocate the TCB there. */
# define TLS_TCB_AT_TP 1
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# define TLS_DTV_AT_TP 0
/* Get the thread descriptor definition. */
# include <nptl/descr.h>
/* Install the dtv pointer. The pointer passed is to the element with
index -1 which contain the length. */
# define INSTALL_DTV(descr, dtvp) \
((tcbhead_t *) (descr))->dtv = (dtvp) + 1
/* Install new dtv for current thread. */
# define INSTALL_NEW_DTV(dtvp) \
({ struct pthread *__pd; \
THREAD_SETMEM (__pd, header.dtv, (dtvp)); })
/* Return dtv of given thread descriptor. */
# define GET_DTV(descr) \
(((tcbhead_t *) (descr))->dtv)
/* Code to initially initialize the thread pointer. This might need
special attention since 'errno' is not yet available and if the
operation can cause a failure 'errno' must not be touched.
We have to make the syscall for both uses of the macro since the
address might be (and probably is) different. */
# define TLS_INIT_TP(thrdescr) \
({ void *_thrdescr = (thrdescr); \
tcbhead_t *_head = _thrdescr; \
int _result; \
\
_head->tcb = _thrdescr; \
/* For now the thread descriptor is at the same address. */ \
_head->self = _thrdescr; \
\
/* It is a simple syscall to set the %fs value for the thread. */ \
asm volatile ("syscall" \
: "=a" (_result) \
: "0" ((unsigned long int) __NR_arch_prctl), \
"D" ((unsigned long int) ARCH_SET_FS), \
"S" (_thrdescr) \
: "memory", "cc", "r11", "cx"); \
\
* sysdeps/generic/libc-tls.c (__libc_setup_tls): Cope with zero ALIGN. * malloc/hooks.c [_LIBC && (USE___THREAD || (USE_TLS && !SHARED))] (malloc_starter, memalign_starter, free_starter): Don't define these. * malloc/malloc.c [_LIBC && (USE___THREAD || (USE_TLS && !SHARED))]: Don't declare them either. * malloc/arena.c (ptmalloc_init) [_LIBC && USE_TLS]: Don't call __pthread_initialize, so no need to set hooks to *_starter. (ptmalloc_init_minimal): New function, broken out of ptmalloc_init. [_LIBC && SHARED && USE_TLS && !USE___THREAD] (__libc_malloc_pthread_startup): New function. * malloc/Versions (libc: GLIBC_PRIVATE): New set, add that function. * malloc/hooks.c (memalign_starter): New function. * malloc/malloc.c: Declare it. * malloc/arena.c (save_memalign_hook): New variable. (ptmalloc_init): Set __memalign_hook to memalign_starter. * elf/dl-minimal.c (free): Clear the memory. (calloc): Just call malloc, knowing all memory it returns is cleared. * sysdeps/generic/dl-tls.c (allocate_dtv): Use calloc instead of malloc and memset; calloc can avoid the zeroing when redundant. (_dl_tls_setup): Likewise. * elf/dl-load.c (decompose_rpath): Likewise. * sysdeps/generic/libc-tls.c (__libc_setup_tls): Comment out memset call, since memory from sbrk at startup is already zero. * elf/rtld.c (_dl_start, dl_main): TLS_INIT_TP macro now returns an error string for failure, null for success. Update callers. * sysdeps/generic/libc-tls.c (__libc_setup_tls): Likewise. * elf/dl-load.c (_dl_map_object_from_fd): Likewise.
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_result ? "cannot set %fs base address for thread-local storage" : 0; \
})
# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd)
/* Return the address of the dtv for the current thread. */
# define THREAD_DTV() \
({ struct pthread *__pd; \
THREAD_GETMEM (__pd, header.dtv); })
/* Return the thread descriptor for the current thread.
The contained asm must *not* be marked volatile since otherwise
assignments like
pthread_descr self = thread_self();
do not get optimized away. */
# define THREAD_SELF \
({ struct pthread *__self; \
asm ("mov %%fs:%c1,%0" : "=r" (__self) \
: "i" (offsetof (struct pthread, header.self))); \
__self;})
/* Magic for libthread_db to know how to do THREAD_SELF. */
# define DB_THREAD_SELF_INCLUDE <sys/reg.h> /* For the FS constant. */
# define DB_THREAD_SELF CONST_THREAD_AREA (64, FS)
/* Read member of the thread descriptor directly. */
# define THREAD_GETMEM(descr, member) \
({ __typeof (descr->member) __value; \
if (sizeof (__value) == 1) \
asm volatile ("movb %%fs:%P2,%b0" \
: "=q" (__value) \
: "0" (0), "i" (offsetof (struct pthread, member))); \
else if (sizeof (__value) == 4) \
asm volatile ("movl %%fs:%P1,%0" \
: "=r" (__value) \
: "i" (offsetof (struct pthread, member))); \
else \
{ \
if (sizeof (__value) != 8) \
/* There should not be any value with a size other than 1, \
4 or 8. */ \
abort (); \
\
asm volatile ("movq %%fs:%P1,%q0" \
: "=r" (__value) \
: "i" (offsetof (struct pthread, member))); \
} \
__value; })
/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
# define THREAD_GETMEM_NC(descr, member, idx) \
({ __typeof (descr->member[0]) __value; \
if (sizeof (__value) == 1) \
asm volatile ("movb %%fs:%P2(%q3),%b0" \
: "=q" (__value) \
: "0" (0), "i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
else if (sizeof (__value) == 4) \
asm volatile ("movl %%fs:%P1(,%q2,4),%0" \
: "=r" (__value) \
: "i" (offsetof (struct pthread, member[0])), "r" (idx));\
else \
{ \
if (sizeof (__value) != 8) \
/* There should not be any value with a size other than 1, \
4 or 8. */ \
abort (); \
\
asm volatile ("movq %%fs:%P1(,%q2,8),%q0" \
: "=r" (__value) \
: "i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
} \
__value; })
/* Loading addresses of objects on x86-64 needs to be treated special
when generating PIC code. */
#ifdef __pic__
# define IMM_MODE "nr"
#else
# define IMM_MODE "ir"
#endif
/* Set member of the thread descriptor directly. */
# define THREAD_SETMEM(descr, member, value) \
({ if (sizeof (descr->member) == 1) \
Update. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Fix asm syntax. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_trywait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise. * sysdeps/x86_64/tls.h (THREAD_SELF, THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Correct asm syntax. * allocatestack.c [! TLS_MULTIPLE_THREADS_IN_TCB] (allocate_stack): Initialize *__libc_multiple_threads_ptr not __libc_multiple_threads. * sysdeps/pthread/createthread.c [! TLS_MULTIPLE_THREADS_IN_TCB] (create_thread): Likewise. Define __pthread_multiple_threads and __libc_multiple_threads_ptr. * init.c (__pthread_initialize_minimal_internal): Initialize __libc_multiple_threads_ptr if necessary. * pthreadP.h: Adjust prototype for __libc_pthread_init. Declare __pthread_multiple_threads and __libc_multiple_threads_ptr. * sysdeps/unix/sysv/linux/libc_pthread_init.c: Define __libc_multiple_threads. (__libc_pthread_init): Return pointer to __libc_pthread_init if necessary. * sysdeps/i386/tls.h (THREAD_SETMEM): Fix one-byte variant. (THREAD_SETMEM_NC): Likewise. * sysdeps/x86_64/pthread_spin_trylock.c: Removed. * sysdeps/x86_64/pthread_spin_trylock.S: New file. * sysdeps/x86_64/pthread_spin_unlock.c: Removed. * sysdeps/x86_64/pthread_spin_unlock.S: New file. * sysdeps/i386/i486/pthread_spin_trylock.S (pthread_spin_trylock): Eliminate one entire instruction.
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asm volatile ("movb %b0,%%fs:%P1" : \
: "iq" (value), \
"i" (offsetof (struct pthread, member))); \
else if (sizeof (descr->member) == 4) \
asm volatile ("movl %0,%%fs:%P1" : \
: IMM_MODE (value), \
"i" (offsetof (struct pthread, member))); \
else \
{ \
if (sizeof (descr->member) != 8) \
/* There should not be any value with a size other than 1, \
4 or 8. */ \
abort (); \
\
Update. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Fix asm syntax. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_trywait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise. * sysdeps/x86_64/tls.h (THREAD_SELF, THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Correct asm syntax. * allocatestack.c [! TLS_MULTIPLE_THREADS_IN_TCB] (allocate_stack): Initialize *__libc_multiple_threads_ptr not __libc_multiple_threads. * sysdeps/pthread/createthread.c [! TLS_MULTIPLE_THREADS_IN_TCB] (create_thread): Likewise. Define __pthread_multiple_threads and __libc_multiple_threads_ptr. * init.c (__pthread_initialize_minimal_internal): Initialize __libc_multiple_threads_ptr if necessary. * pthreadP.h: Adjust prototype for __libc_pthread_init. Declare __pthread_multiple_threads and __libc_multiple_threads_ptr. * sysdeps/unix/sysv/linux/libc_pthread_init.c: Define __libc_multiple_threads. (__libc_pthread_init): Return pointer to __libc_pthread_init if necessary. * sysdeps/i386/tls.h (THREAD_SETMEM): Fix one-byte variant. (THREAD_SETMEM_NC): Likewise. * sysdeps/x86_64/pthread_spin_trylock.c: Removed. * sysdeps/x86_64/pthread_spin_trylock.S: New file. * sysdeps/x86_64/pthread_spin_unlock.c: Removed. * sysdeps/x86_64/pthread_spin_unlock.S: New file. * sysdeps/i386/i486/pthread_spin_trylock.S (pthread_spin_trylock): Eliminate one entire instruction.
2003-03-12 05:45:00 +00:00
asm volatile ("movq %q0,%%fs:%P1" : \
: IMM_MODE ((uint64_t) cast_to_integer (value)), \
"i" (offsetof (struct pthread, member))); \
}})
/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
# define THREAD_SETMEM_NC(descr, member, idx, value) \
({ if (sizeof (descr->member[0]) == 1) \
Update. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Fix asm syntax. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_trywait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise. * sysdeps/x86_64/tls.h (THREAD_SELF, THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Correct asm syntax. * allocatestack.c [! TLS_MULTIPLE_THREADS_IN_TCB] (allocate_stack): Initialize *__libc_multiple_threads_ptr not __libc_multiple_threads. * sysdeps/pthread/createthread.c [! TLS_MULTIPLE_THREADS_IN_TCB] (create_thread): Likewise. Define __pthread_multiple_threads and __libc_multiple_threads_ptr. * init.c (__pthread_initialize_minimal_internal): Initialize __libc_multiple_threads_ptr if necessary. * pthreadP.h: Adjust prototype for __libc_pthread_init. Declare __pthread_multiple_threads and __libc_multiple_threads_ptr. * sysdeps/unix/sysv/linux/libc_pthread_init.c: Define __libc_multiple_threads. (__libc_pthread_init): Return pointer to __libc_pthread_init if necessary. * sysdeps/i386/tls.h (THREAD_SETMEM): Fix one-byte variant. (THREAD_SETMEM_NC): Likewise. * sysdeps/x86_64/pthread_spin_trylock.c: Removed. * sysdeps/x86_64/pthread_spin_trylock.S: New file. * sysdeps/x86_64/pthread_spin_unlock.c: Removed. * sysdeps/x86_64/pthread_spin_unlock.S: New file. * sysdeps/i386/i486/pthread_spin_trylock.S (pthread_spin_trylock): Eliminate one entire instruction.
2003-03-12 05:45:00 +00:00
asm volatile ("movb %b0,%%fs:%P1(%q2)" : \
: "iq" (value), \
"i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
else if (sizeof (descr->member[0]) == 4) \
Update. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Fix asm syntax. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_trywait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise. * sysdeps/x86_64/tls.h (THREAD_SELF, THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Correct asm syntax. * allocatestack.c [! TLS_MULTIPLE_THREADS_IN_TCB] (allocate_stack): Initialize *__libc_multiple_threads_ptr not __libc_multiple_threads. * sysdeps/pthread/createthread.c [! TLS_MULTIPLE_THREADS_IN_TCB] (create_thread): Likewise. Define __pthread_multiple_threads and __libc_multiple_threads_ptr. * init.c (__pthread_initialize_minimal_internal): Initialize __libc_multiple_threads_ptr if necessary. * pthreadP.h: Adjust prototype for __libc_pthread_init. Declare __pthread_multiple_threads and __libc_multiple_threads_ptr. * sysdeps/unix/sysv/linux/libc_pthread_init.c: Define __libc_multiple_threads. (__libc_pthread_init): Return pointer to __libc_pthread_init if necessary. * sysdeps/i386/tls.h (THREAD_SETMEM): Fix one-byte variant. (THREAD_SETMEM_NC): Likewise. * sysdeps/x86_64/pthread_spin_trylock.c: Removed. * sysdeps/x86_64/pthread_spin_trylock.S: New file. * sysdeps/x86_64/pthread_spin_unlock.c: Removed. * sysdeps/x86_64/pthread_spin_unlock.S: New file. * sysdeps/i386/i486/pthread_spin_trylock.S (pthread_spin_trylock): Eliminate one entire instruction.
2003-03-12 05:45:00 +00:00
asm volatile ("movl %0,%%fs:%P1(,%q2,4)" : \
: IMM_MODE (value), \
"i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
else \
{ \
if (sizeof (descr->member[0]) != 8) \
/* There should not be any value with a size other than 1, \
4 or 8. */ \
abort (); \
\
Update. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Fix asm syntax. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevelmutex.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_trywait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise. * sysdeps/x86_64/tls.h (THREAD_SELF, THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Correct asm syntax. * allocatestack.c [! TLS_MULTIPLE_THREADS_IN_TCB] (allocate_stack): Initialize *__libc_multiple_threads_ptr not __libc_multiple_threads. * sysdeps/pthread/createthread.c [! TLS_MULTIPLE_THREADS_IN_TCB] (create_thread): Likewise. Define __pthread_multiple_threads and __libc_multiple_threads_ptr. * init.c (__pthread_initialize_minimal_internal): Initialize __libc_multiple_threads_ptr if necessary. * pthreadP.h: Adjust prototype for __libc_pthread_init. Declare __pthread_multiple_threads and __libc_multiple_threads_ptr. * sysdeps/unix/sysv/linux/libc_pthread_init.c: Define __libc_multiple_threads. (__libc_pthread_init): Return pointer to __libc_pthread_init if necessary. * sysdeps/i386/tls.h (THREAD_SETMEM): Fix one-byte variant. (THREAD_SETMEM_NC): Likewise. * sysdeps/x86_64/pthread_spin_trylock.c: Removed. * sysdeps/x86_64/pthread_spin_trylock.S: New file. * sysdeps/x86_64/pthread_spin_unlock.c: Removed. * sysdeps/x86_64/pthread_spin_unlock.S: New file. * sysdeps/i386/i486/pthread_spin_trylock.S (pthread_spin_trylock): Eliminate one entire instruction.
2003-03-12 05:45:00 +00:00
asm volatile ("movq %q0,%%fs:%P1(,%q2,8)" : \
: IMM_MODE ((uint64_t) cast_to_integer (value)), \
"i" (offsetof (struct pthread, member[0])), \
"r" (idx)); \
}})
/* Atomic compare and exchange on TLS, returning old value. */
# define THREAD_ATOMIC_CMPXCHG_VAL(descr, member, newval, oldval) \
({ __typeof (descr->member) __ret; \
__typeof (oldval) __old = (oldval); \
if (sizeof (descr->member) == 4) \
asm volatile (LOCK_PREFIX "cmpxchgl %2, %%fs:%P3" \
: "=a" (__ret) \
: "0" (__old), "r" (newval), \
"i" (offsetof (struct pthread, member))); \
else \
/* Not necessary for other sizes in the moment. */ \
abort (); \
__ret; })
/* Atomic logical and. */
# define THREAD_ATOMIC_AND(descr, member, val) \
(void) ({ if (sizeof ((descr)->member) == 4) \
asm volatile (LOCK_PREFIX "andl %1, %%fs:%P0" \
:: "i" (offsetof (struct pthread, member)), \
"ir" (val)); \
else \
/* Not necessary for other sizes in the moment. */ \
abort (); })
/* Atomic set bit. */
# define THREAD_ATOMIC_BIT_SET(descr, member, bit) \
(void) ({ if (sizeof ((descr)->member) == 4) \
asm volatile (LOCK_PREFIX "orl %1, %%fs:%P0" \
:: "i" (offsetof (struct pthread, member)), \
"ir" (1 << (bit))); \
else \
/* Not necessary for other sizes in the moment. */ \
abort (); })
/* Set the stack guard field in TCB head. */
# define THREAD_SET_STACK_GUARD(value) \
THREAD_SETMEM (THREAD_SELF, header.stack_guard, value)
# define THREAD_COPY_STACK_GUARD(descr) \
((descr)->header.stack_guard \
= THREAD_GETMEM (THREAD_SELF, header.stack_guard))
/* Set the pointer guard field in the TCB head. */
# define THREAD_SET_POINTER_GUARD(value) \
THREAD_SETMEM (THREAD_SELF, header.pointer_guard, value)
# define THREAD_COPY_POINTER_GUARD(descr) \
((descr)->header.pointer_guard \
= THREAD_GETMEM (THREAD_SELF, header.pointer_guard))
/* Get and set the global scope generation counter in the TCB head. */
# define THREAD_GSCOPE_FLAG_UNUSED 0
# define THREAD_GSCOPE_FLAG_USED 1
# define THREAD_GSCOPE_FLAG_WAIT 2
# define THREAD_GSCOPE_RESET_FLAG() \
do \
{ int __res; \
asm volatile ("xchgl %0, %%fs:%P1" \
: "=r" (__res) \
: "i" (offsetof (struct pthread, header.gscope_flag)), \
"0" (THREAD_GSCOPE_FLAG_UNUSED)); \
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
} \
while (0)
# define THREAD_GSCOPE_SET_FLAG() \
THREAD_SETMEM (THREAD_SELF, header.gscope_flag, THREAD_GSCOPE_FLAG_USED)
# define THREAD_GSCOPE_WAIT() \
GL(dl_wait_lookup_done) ()
#endif /* __ASSEMBLER__ */
#endif /* tls.h */