diff options
Diffstat (limited to 'sysdeps/unix')
28 files changed, 371 insertions, 166 deletions
diff --git a/sysdeps/unix/clock_settime.c b/sysdeps/unix/clock_settime.c index a93be6349b..f3f62cf990 100644 --- a/sysdeps/unix/clock_settime.c +++ b/sysdeps/unix/clock_settime.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999-2004, 2006 Free Software Foundation, Inc. +/* Copyright (C) 1999-2004, 2006, 2007 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 @@ -23,7 +23,7 @@ #include <ldsodefs.h> -#if HP_TIMING_AVAIL +#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME /* Clock frequency of the processor. We make it a 64-bit variable because some jokers are already playing with processors with more than 4GHz. */ @@ -33,10 +33,8 @@ static hp_timing_t freq; /* This function is defined in the thread library. */ extern void __pthread_clock_settime (clockid_t clock_id, hp_timing_t offset) __attribute__ ((__weak__)); -#endif -#if HP_TIMING_AVAIL static int hp_timing_settime (clockid_t clock_id, const struct timespec *tp) { diff --git a/sysdeps/unix/sysv/linux/clock_gettime.c b/sysdeps/unix/sysv/linux/clock_gettime.c index 5afe20feb5..cd536a0fc0 100644 --- a/sysdeps/unix/sysv/linux/clock_gettime.c +++ b/sysdeps/unix/sysv/linux/clock_gettime.c @@ -1,5 +1,5 @@ /* clock_gettime -- Get current time from a POSIX clockid_t. Linux version. - Copyright (C) 2003,2004,2005,2006 Free Software Foundation, Inc. + Copyright (C) 2003,2004,2005,2006,2007 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 @@ -133,11 +133,19 @@ maybe_syscall_gettime_cpu (clockid_t clock_id, struct timespec *tp) { if (e == EINVAL) { +# ifdef HAVE_CLOCK_GETRES_VSYSCALL /* Check whether the kernel supports CPU clocks at all. If not, record it for the future. */ r = INTERNAL_VSYSCALL (clock_getres, err, 2, + MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED), + NULL); +# else + /* Check whether the kernel supports CPU clocks at all. + If not, record it for the future. */ + r = INTERNAL_SYSCALL (clock_getres, err, 2, MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED), NULL); +# endif if (INTERNAL_SYSCALL_ERROR_P (r, err)) __libc_missing_posix_cpu_timers = 1; } diff --git a/sysdeps/unix/sysv/linux/dl-osinfo.h b/sysdeps/unix/sysv/linux/dl-osinfo.h index 89bad440c9..86c593ee2b 100644 --- a/sysdeps/unix/sysv/linux/dl-osinfo.h +++ b/sysdeps/unix/sysv/linux/dl-osinfo.h @@ -74,6 +74,7 @@ _dl_discover_osversion (void) #define ROUND(len) (((len) + sizeof note->n_type - 1) & -sizeof note->n_type) note = ((const void *) (note + 1) + ROUND (note->n_namesz) + ROUND (note->n_descsz)); +#undef ROUND } } } diff --git a/sysdeps/unix/sysv/linux/powerpc/dl-vdso.c b/sysdeps/unix/sysv/linux/dl-vdso.c index e1be097734..28d4bb1d42 100644 --- a/sysdeps/unix/sysv/linux/powerpc/dl-vdso.c +++ b/sysdeps/unix/sysv/linux/dl-vdso.c @@ -1,5 +1,5 @@ /* ELF symbol resolve functions for VDSO objects. - Copyright (C) 2005 Free Software Foundation, Inc. + Copyright (C) 2005, 2007 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 @@ -18,13 +18,12 @@ 02111-1307 USA. */ #include "config.h" -#include <dl-hash.h> #include <ldsodefs.h> void * internal_function -_dl_vdso_vsym (const char *name, const char *version) +_dl_vdso_vsym (const char *name, const struct r_found_version *vers) { struct link_map *map = GLRO (dl_sysinfo_map); void *value = NULL; @@ -37,19 +36,11 @@ _dl_vdso_vsym (const char *name, const char *version) memset (&wsym, 0, sizeof (ElfW (Sym))); wsym.st_info = (unsigned char) ELFW (ST_INFO (STB_WEAK, STT_NOTYPE)); - /* Compute hash value to the version string. */ - struct r_found_version vers; - vers.name = version; - vers.hidden = 1; - vers.hash = _dl_elf_hash (version); - /* We don't have a specific file where the symbol can be found. */ - vers.filename = NULL; - /* Search the scope of the vdso map. */ const ElfW (Sym) *ref = &wsym; lookup_t result = GLRO (dl_lookup_symbol_x) (name, map, &ref, map->l_local_scope, - &vers, 0, 0, NULL); + vers, 0, 0, NULL); if (ref != NULL) value = DL_SYMBOL_ADDRESS (result, ref); diff --git a/sysdeps/unix/sysv/linux/dl-vdso.h b/sysdeps/unix/sysv/linux/dl-vdso.h new file mode 100644 index 0000000000..7e433e03ab --- /dev/null +++ b/sysdeps/unix/sysv/linux/dl-vdso.h @@ -0,0 +1,49 @@ +/* ELF symbol resolve functions for VDSO objects. + Copyright (C) 2005, 2007 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _DL_VDSO_H +#define _DL_VDSO_H 1 + +#include <assert.h> +#include <ldsodefs.h> + +#ifdef NDEBUG +# define CHECK_HASH(var) do {} while (0) +#else +# include <dl-hash.h> +# define CHECK_HASH(var) assert (var.hash == _dl_elf_hash (var.name)) +#endif + +/* Create version number record for lookup. */ +#define PREPARE_VERSION(var, vname, vhash) \ + struct r_found_version var; \ + var.name = vname; \ + var.hidden = 1; \ + var.hash = vhash; \ + CHECK_HASH (var); \ + /* We don't have a specific file where the symbol can be found. */ \ + var.filename = NULL + + +/* Functions for resolving symbols in the VDSO link map. */ +extern void *_dl_vdso_vsym (const char *name, + const struct r_found_version *version) + internal_function attribute_hidden; + +#endif /* dl-vdso.h */ diff --git a/sysdeps/unix/sysv/linux/fstatfs64.c b/sysdeps/unix/sysv/linux/fstatfs64.c index 48afd1f4d1..79c9adcdc3 100644 --- a/sysdeps/unix/sysv/linux/fstatfs64.c +++ b/sysdeps/unix/sysv/linux/fstatfs64.c @@ -1,5 +1,6 @@ /* Return information about the filesystem on which FD resides. - Copyright (C) 1996,1997,1998,1999,2000,2003 Free Software Foundation, Inc. + Copyright (C) 1996,1997,1998,1999,2000,2003,2007 + 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 @@ -22,6 +23,7 @@ #include <sys/statfs.h> #include <stddef.h> #include <sysdep.h> +#include <kernel-features.h> /* Defined in statfs64.c. */ extern int __no_statfs64 attribute_hidden; diff --git a/sysdeps/unix/sysv/linux/fxstatat.c b/sysdeps/unix/sysv/linux/fxstatat.c index c1c416abd7..1b9add40d7 100644 --- a/sysdeps/unix/sysv/linux/fxstatat.c +++ b/sysdeps/unix/sysv/linux/fxstatat.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2006, 2007 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 @@ -30,6 +30,7 @@ #include <sysdep.h> #include <sys/syscall.h> #include <bp-checks.h> +#include <kernel-features.h> #include <xstatconv.h> diff --git a/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h b/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h index 72c60ec240..34bc3c26ab 100644 --- a/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h +++ b/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1998, 2000, 2001, 2003, 2004 +/* Copyright (C) 1996, 1997, 1998, 2000, 2001, 2003, 2004, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jes Sorensen <jes@linuxcare.com>, July 2000 @@ -25,6 +25,8 @@ #ifndef _BITS_SIGCONTEXT_H #define _BITS_SIGCONTEXT_H 1 +#define __need_size_t +#include <stddef.h> #include <bits/sigstack.h> struct ia64_fpreg diff --git a/sysdeps/unix/sysv/linux/if_index.c b/sysdeps/unix/sysv/linux/if_index.c index 66f0ac1317..6bd6bda3b0 100644 --- a/sysdeps/unix/sysv/linux/if_index.c +++ b/sysdeps/unix/sysv/linux/if_index.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005 +/* Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -28,6 +28,7 @@ #include <sys/ioctl.h> #include <bits/libc-lock.h> #include <not-cancel.h> +#include <kernel-features.h> #include "netlinkaccess.h" diff --git a/sysdeps/unix/sysv/linux/ifaddrs.c b/sysdeps/unix/sysv/linux/ifaddrs.c index 02e6935538..9aa9abac3b 100644 --- a/sysdeps/unix/sysv/linux/ifaddrs.c +++ b/sysdeps/unix/sysv/linux/ifaddrs.c @@ -33,6 +33,7 @@ #include <sysdep.h> #include <time.h> #include <unistd.h> +#include <kernel-features.h> #include "netlinkaccess.h" diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index f8116d8885..aab3df348e 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -428,29 +428,37 @@ # define __ASSUME_TMPFS_NAME 1 #endif -/* pselect was introduced just after 2.6.16-rc1. Due to the way the - kernel versions are advertised we can only rely on 2.6.17 to have - the code. */ -#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __x86_64__ +/* pselect/ppoll were introduced just after 2.6.16-rc1. Due to the way + the kernel versions are advertised we can only rely on 2.6.17 to have + the code. On x86_64 and SH this appeared first in 2.6.19-rc1, + on ia64 in 2.6.22-rc1 and on alpha just after 2.6.22-rc1. */ +#if __LINUX_KERNEL_VERSION >= 0x020611 \ + && ((!defined __x86_64__ && !defined __sh__ && !defined __ia64__ \ + && !defined __alpha__) \ + || (__LINUX_KERNEL_VERSION >= 0x020613 \ + && (defined __x86_64__ || defined __sh__)) \ + || (__LINUX_KERNEL_VERSION >= 0x020616 && defined __ia64__) \ + || (__LINUX_KERNEL_VERSION >= 0x020617 && defined __alpha__)) # define __ASSUME_PSELECT 1 -#endif - -/* ppoll was introduced just after 2.6.16-rc1. Due to the way the - kernel versions are advertised we can only rely on 2.6.17 to have - the code. */ -#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __x86_64__ -# define __ASSUME_PPOLL 1 +# define __ASSUME_PPOLL 1 #endif /* The *at syscalls were introduced just after 2.6.16-rc1. Due to the way the kernel versions are advertised we can only rely on 2.6.17 to have - the code. */ -#if __LINUX_KERNEL_VERSION >= 0x020611 + the code. On PPC they were introduced in 2.6.17-rc1, on SH in 2.6.19-rc1 + and on Alpha just after 2.6.22-rc1. */ +#if __LINUX_KERNEL_VERSION >= 0x020611 \ + && ((!defined __sh__ && !defined __alpha__) \ + || (__LINUX_KERNEL_VERSION >= 0x020613 && defined __sh__) \ + || (__LINUX_KERNEL_VERSION >= 0x020617 && defined __alpha__)) # define __ASSUME_ATFCTS 1 #endif /* Support for inter-process robust mutexes was added in 2.6.17. */ -#if __LINUX_KERNEL_VERSION >= 0x020611 +#if __LINUX_KERNEL_VERSION >= 0x020611 \ + && ((!defined __sh__ && !defined __alpha__) \ + || (__LINUX_KERNEL_VERSION >= 0x020613 && defined __sh__) \ + || (__LINUX_KERNEL_VERSION >= 0x020617 && defined __alpha__)) # define __ASSUME_SET_ROBUST_LIST 1 #endif @@ -459,8 +467,11 @@ # define __ASSUME_FUTEX_LOCK_PI 1 #endif -/* Support for utimensat syscall was added in 2.6.22. */ -#if __LINUX_KERNEL_VERSION >= 0x020616 +/* Support for utimensat syscall was added in 2.6.22, on alpha and s390 + only after 2.6.22-rc1. */ +#if __LINUX_KERNEL_VERSION >= 0x020616 \ + && ((!defined __sh__ && !defined __alpha__) \ + || __LINUX_KERNEL_VERSION >= 0x020617) # define __ASSUME_UTIMENSAT 1 #endif @@ -469,7 +480,10 @@ # define __ASSUME_PRIVATE_FUTEX 1 #endif -/* Support for fallocate was added in 2.6.23. */ -#if __LINUX_KERNEL_VERSION >= 0x020617 +/* Support for fallocate was added in 2.6.23, on s390 + only after 2.6.23-rc1. */ +#if __LINUX_KERNEL_VERSION >= 0x020617 \ + && ((!defined __s390__ && !defined __alpha__) \ + || (__LINUX_KERNEL_VERSION >= 0x020618 && defined __s390__)) # define __ASSUME_FALLOCATE 1 #endif diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile index ecd8057951..d1281cf469 100644 --- a/sysdeps/unix/sysv/linux/powerpc/Makefile +++ b/sysdeps/unix/sysv/linux/powerpc/Makefile @@ -8,5 +8,5 @@ gen-as-const-headers += ucontext_i.sym endif ifeq ($(subdir),elf) -routines += dl-vdso +sysdep_routines += dl-vdso endif diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h index f20a5a175c..746d9ced4a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h +++ b/sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h @@ -23,7 +23,7 @@ #ifdef SHARED -extern void *__vdso_gettimeofday; +extern void *__vdso_gettimeofday attribute_hidden; extern void *__vdso_clock_gettime; diff --git a/sysdeps/unix/sysv/linux/powerpc/libc-start.c b/sysdeps/unix/sysv/linux/powerpc/libc-start.c index a71cfa5b06..d1f321c44d 100644 --- a/sysdeps/unix/sysv/linux/powerpc/libc-start.c +++ b/sysdeps/unix/sysv/linux/powerpc/libc-start.c @@ -24,23 +24,6 @@ #include <bp-start.h> #include <bp-sym.h> -int __cache_line_size attribute_hidden; -/* The main work is done in the generic function. */ -#define LIBC_START_MAIN generic_start_main -#define LIBC_START_DISABLE_INLINE -#define LIBC_START_MAIN_AUXVEC_ARG -#define MAIN_AUXVEC_ARG -#define INIT_MAIN_ARGS -#include <csu/libc-start.c> - -struct startup_info - { - void *__unbounded sda_base; - int (*main) (int, char **, char **, void *); - int (*init) (int, char **, char **, void *); - void (*fini) (void); - }; - #ifdef SHARED # include <sys/time.h> @@ -50,27 +33,46 @@ struct startup_info # undef __clock_getres # include <bits/libc-vdso.h> -void *__vdso_gettimeofday; +void *__vdso_gettimeofday attribute_hidden; void *__vdso_clock_gettime; void *__vdso_clock_getres; void *__vdso_get_tbfreq; -static inline void _libc_vdso_platform_setup (void) - { - __vdso_gettimeofday = _dl_vdso_vsym ("__kernel_gettimeofday", - "LINUX_2.6.15"); +static inline void +_libc_vdso_platform_setup (void) +{ + PREPARE_VERSION (linux2615, "LINUX_2.6.15", 123718565); + + __vdso_gettimeofday = _dl_vdso_vsym ("__kernel_gettimeofday", &linux2615); - __vdso_clock_gettime = _dl_vdso_vsym ("__kernel_clock_gettime", - "LINUX_2.6.15"); + __vdso_clock_gettime = _dl_vdso_vsym ("__kernel_clock_gettime", &linux2615); - __vdso_clock_getres = _dl_vdso_vsym ("__kernel_clock_getres", - "LINUX_2.6.15"); + __vdso_clock_getres = _dl_vdso_vsym ("__kernel_clock_getres", &linux2615); + + __vdso_get_tbfreq = _dl_vdso_vsym ("__kernel_vdso_get_tbfreq", &linux2615); +} - __vdso_get_tbfreq = _dl_vdso_vsym ("__kernel_vdso_get_tbfreq", - "LINUX_2.6.15"); - } +# define VDSO_SETUP _libc_vdso_platform_setup #endif + +int __cache_line_size attribute_hidden; +/* The main work is done in the generic function. */ +#define LIBC_START_MAIN generic_start_main +#define LIBC_START_DISABLE_INLINE +#define LIBC_START_MAIN_AUXVEC_ARG +#define MAIN_AUXVEC_ARG +#define INIT_MAIN_ARGS +#include <csu/libc-start.c> + +struct startup_info + { + void *__unbounded sda_base; + int (*main) (int, char **, char **, void *); + int (*init) (int, char **, char **, void *); + void (*fini) (void); + }; + int /* GKM FIXME: GCC: this should get __BP_ prefix by virtue of the BPs in the arglist of startup_info.main and startup_info.init. */ @@ -117,10 +119,7 @@ int __cache_line_size = av->a_un.a_val; break; } -#ifdef SHARED - /* Resolve and initialize function pointers for VDSO functions. */ - _libc_vdso_platform_setup (); -#endif + return generic_start_main (stinfo->main, argc, ubp_av, auxvec, stinfo->init, stinfo->fini, rtld_fini, stack_on_entry); diff --git a/sysdeps/unix/sysv/linux/ppoll.c b/sysdeps/unix/sysv/linux/ppoll.c index cfc86ba806..14eb3111b9 100644 --- a/sysdeps/unix/sysv/linux/ppoll.c +++ b/sysdeps/unix/sysv/linux/ppoll.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2006 Free Software Foundation, Inc. +/* Copyright (C) 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2006. @@ -26,9 +26,11 @@ #ifdef __NR_ppoll +# ifndef __ASSUME_PPOLL static int __generic_ppoll (struct pollfd *fds, nfds_t nfds, const struct timespec *timeout, const sigset_t *sigmask); +# endif int diff --git a/sysdeps/unix/sysv/linux/pselect.c b/sysdeps/unix/sysv/linux/pselect.c index 0dd744f527..f39ee920cd 100644 --- a/sysdeps/unix/sysv/linux/pselect.c +++ b/sysdeps/unix/sysv/linux/pselect.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2006 Free Software Foundation, Inc. +/* Copyright (C) 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2006. @@ -26,10 +26,12 @@ #ifdef __NR_pselect6 +# ifndef __ASSUME_PSELECT static int __generic_pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, const struct timespec *timeout, const sigset_t *sigmask); +# endif int diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S b/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S index c0d7cd4590..b2db5423c3 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S +++ b/sysdeps/unix/sysv/linux/s390/s390-32/mmap.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2000, 2001 Free Software Foundation, Inc. +/* Copyright (C) 2000, 2001, 2007 Free Software Foundation, Inc. Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). This file is part of the GNU C Library. @@ -18,6 +18,7 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <kernel-features.h> #define EINVAL 22 diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S b/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S index aba4ac34e3..4c3667aaa5 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S +++ b/sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2000, 2001 Free Software Foundation, Inc. +/* Copyright (C) 2000, 2001, 2007 Free Software Foundation, Inc. Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). This file is part of the GNU C Library. @@ -18,6 +18,7 @@ 02111-1307 USA. */ #include <sysdep.h> +#include <kernel-features.h> #define EINVAL 22 #define ENOSYS 38 diff --git a/sysdeps/unix/sysv/linux/shm_open.c b/sysdeps/unix/sysv/linux/shm_open.c index 0628427680..92d22cfa76 100644 --- a/sysdeps/unix/sysv/linux/shm_open.c +++ b/sysdeps/unix/sysv/linux/shm_open.c @@ -187,7 +187,7 @@ shm_open (const char *name, int oflag, mode_t mode) if (__builtin_expect (flags, 0) >= 0) { -# ifndef O_CLOEXEC +# ifdef O_CLOEXEC if (have_o_cloexec == 0) have_o_cloexec = (flags & FD_CLOEXEC) == 0 ? -1 : 1; if (have_o_cloexec < 0) diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/xstat.c b/sysdeps/unix/sysv/linux/sparc/sparc64/xstat.c index 9f4c02c78b..71a51ccd8a 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/xstat.c +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/xstat.c @@ -1,3 +1,5 @@ +#include <kernel-features.h> + #include "../../i386/xstat.c" #ifdef __NR_stat64 diff --git a/sysdeps/unix/sysv/linux/statfs64.c b/sysdeps/unix/sysv/linux/statfs64.c index 9ccc7a7d69..c3d17b5edd 100644 --- a/sysdeps/unix/sysv/linux/statfs64.c +++ b/sysdeps/unix/sysv/linux/statfs64.c @@ -1,5 +1,5 @@ /* Return information about the filesystem on which FILE resides. - Copyright (C) 1996-2000,2003,2004 Free Software Foundation, Inc. + Copyright (C) 1996-2000,2003,2004,2007 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 @@ -22,6 +22,7 @@ #include <sys/statfs.h> #include <stddef.h> #include <sysdep.h> +#include <kernel-features.h> # if __ASSUME_STATFS64 == 0 diff --git a/sysdeps/unix/sysv/linux/x86_64/Makefile b/sysdeps/unix/sysv/linux/x86_64/Makefile index bdad5063df..6e2741a967 100644 --- a/sysdeps/unix/sysv/linux/x86_64/Makefile +++ b/sysdeps/unix/sysv/linux/x86_64/Makefile @@ -13,3 +13,7 @@ endif ifeq ($(subdir),csu) gen-as-const-headers += ucontext_i.sym endif + +ifeq ($(subdir),elf) +sysdep_routines += dl-vdso +endif diff --git a/sysdeps/unix/sysv/linux/x86_64/Versions b/sysdeps/unix/sysv/linux/x86_64/Versions index fd1b3cc296..34c100bfd2 100644 --- a/sysdeps/unix/sysv/linux/x86_64/Versions +++ b/sysdeps/unix/sysv/linux/x86_64/Versions @@ -6,4 +6,7 @@ libc { modify_ldt; } + GLIBC_PRIVATE { + __vdso_clock_gettime; + } } diff --git a/sysdeps/unix/sysv/linux/powerpc/dl-vdso.h b/sysdeps/unix/sysv/linux/x86_64/bits/libc-vdso.h index a7dcb2e5ff..6e08d3b203 100644 --- a/sysdeps/unix/sysv/linux/powerpc/dl-vdso.h +++ b/sysdeps/unix/sysv/linux/x86_64/bits/libc-vdso.h @@ -1,5 +1,5 @@ -/* ELF symbol resolve functions for VDSO objects. - Copyright (C) 2005 Free Software Foundation, Inc. +/* Resolve function pointers to VDSO functions. + Copyright (C) 2005, 2007 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 @@ -17,11 +17,19 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#ifndef _DL_VDSO_H -#define _DL_VDSO_H 1 +#ifndef _LIBC_VDSO_H +#define _LIBC_VDSO_H -/* Functions for resolving symbols in the VDSO link map. */ -extern void *_dl_vdso_vsym (const char *name, const char *version) - internal_function attribute_hidden; +#include <time.h> +#include <sys/time.h> -#endif /* dl-vdso.h */ +#ifdef SHARED + +extern int (*__vdso_gettimeofday) (struct timeval *, void *) + attribute_hidden; + +extern int (*__vdso_clock_gettime) (clockid_t, struct timespec *); + +#endif + +#endif /* _LIBC_VDSO_H */ diff --git a/sysdeps/unix/sysv/linux/x86_64/gettimeofday.S b/sysdeps/unix/sysv/linux/x86_64/gettimeofday.S index 84a99b0406..f618e738b1 100644 --- a/sysdeps/unix/sysv/linux/x86_64/gettimeofday.S +++ b/sysdeps/unix/sysv/linux/x86_64/gettimeofday.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2007 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 @@ -28,7 +28,12 @@ ENTRY (__gettimeofday) /* Align stack. */ sub $0x8, %rsp cfi_adjust_cfa_offset(8) +#ifdef SHARED + movq __vdso_gettimeofday(%rip), %rax + PTR_DEMANGLE (%rax) +#else movq $VSYSCALL_ADDR_vgettimeofday, %rax +#endif callq *%rax /* Check error return. */ cmpl $-4095, %eax diff --git a/sysdeps/unix/sysv/linux/x86_64/libc-start.c b/sysdeps/unix/sysv/linux/x86_64/libc-start.c new file mode 100644 index 0000000000..dea2e8afe4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86_64/libc-start.c @@ -0,0 +1,49 @@ +/* Copyright (C) 2007 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifdef SHARED +# include <dl-vdso.h> +# include <bits/libc-vdso.h> + +int (*__vdso_gettimeofday) (struct timeval *, void *) attribute_hidden; + +int (*__vdso_clock_gettime) (clockid_t, struct timespec *); + + +static inline void +_libc_vdso_platform_setup (void) +{ + PREPARE_VERSION (linux26, "LINUX_2.6", 61765110); + + void *p = _dl_vdso_vsym ("gettimeofday", &linux26); + /* If the vDSO is not available we fall back on the old vsyscall. */ +#define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000ul + if (p == NULL) + p = (void *) VSYSCALL_ADDR_vgettimeofday; + PTR_MANGLE (p); + __vdso_gettimeofday = p; + + p = _dl_vdso_vsym ("clock_gettime", &linux26); + PTR_MANGLE (p); + __vdso_clock_gettime = p; +} + +# define VDSO_SETUP _libc_vdso_platform_setup +#endif + +#include <csu/libc-start.c> diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h index 1d9a68a046..44d5650549 100644 --- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h +++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h @@ -68,14 +68,14 @@ /* We don't want the label for the error handle to be global when we define it here. */ -#ifdef PIC -# define SYSCALL_ERROR_LABEL 0f -#else -# define SYSCALL_ERROR_LABEL syscall_error -#endif +# ifdef PIC +# define SYSCALL_ERROR_LABEL 0f +# else +# define SYSCALL_ERROR_LABEL syscall_error +# endif -#undef PSEUDO -#define PSEUDO(name, syscall_name, args) \ +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ .text; \ ENTRY (name) \ DO_CALL (syscall_name, args); \ @@ -83,40 +83,40 @@ jae SYSCALL_ERROR_LABEL; \ L(pseudo_end): -#undef PSEUDO_END -#define PSEUDO_END(name) \ +# undef PSEUDO_END +# define PSEUDO_END(name) \ SYSCALL_ERROR_HANDLER \ END (name) -#undef PSEUDO_NOERRNO -#define PSEUDO_NOERRNO(name, syscall_name, args) \ +# undef PSEUDO_NOERRNO +# define PSEUDO_NOERRNO(name, syscall_name, args) \ .text; \ ENTRY (name) \ DO_CALL (syscall_name, args) -#undef PSEUDO_END_NOERRNO -#define PSEUDO_END_NOERRNO(name) \ +# undef PSEUDO_END_NOERRNO +# define PSEUDO_END_NOERRNO(name) \ END (name) -#define ret_NOERRNO ret +# define ret_NOERRNO ret -#undef PSEUDO_ERRVAL -#define PSEUDO_ERRVAL(name, syscall_name, args) \ +# undef PSEUDO_ERRVAL +# define PSEUDO_ERRVAL(name, syscall_name, args) \ .text; \ ENTRY (name) \ DO_CALL (syscall_name, args); \ negq %rax -#undef PSEUDO_END_ERRVAL -#define PSEUDO_END_ERRVAL(name) \ +# undef PSEUDO_END_ERRVAL +# define PSEUDO_END_ERRVAL(name) \ END (name) -#define ret_ERRVAL ret +# define ret_ERRVAL ret -#ifndef PIC -#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ -#elif RTLD_PRIVATE_ERRNO -# define SYSCALL_ERROR_HANDLER \ +# ifndef PIC +# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ +# elif RTLD_PRIVATE_ERRNO +# define SYSCALL_ERROR_HANDLER \ 0: \ leaq rtld_errno(%rip), %rcx; \ xorl %edx, %edx; \ @@ -124,13 +124,13 @@ movl %edx, (%rcx); \ orq $-1, %rax; \ jmp L(pseudo_end); -#elif USE___THREAD -# ifndef NOT_IN_libc -# define SYSCALL_ERROR_ERRNO __libc_errno -# else -# define SYSCALL_ERROR_ERRNO errno -# endif -# define SYSCALL_ERROR_HANDLER \ +# elif USE___THREAD +# ifndef NOT_IN_libc +# define SYSCALL_ERROR_ERRNO __libc_errno +# else +# define SYSCALL_ERROR_ERRNO errno +# endif +# define SYSCALL_ERROR_HANDLER \ 0: \ movq SYSCALL_ERROR_ERRNO@GOTTPOFF(%rip), %rcx;\ xorl %edx, %edx; \ @@ -138,10 +138,10 @@ movl %edx, %fs:(%rcx); \ orq $-1, %rax; \ jmp L(pseudo_end); -#elif defined _LIBC_REENTRANT +# elif defined _LIBC_REENTRANT /* Store (- %rax) into errno through the GOT. Note that errno occupies only 4 bytes. */ -# define SYSCALL_ERROR_HANDLER \ +# define SYSCALL_ERROR_HANDLER \ 0: \ xorl %edx, %edx; \ subq %rax, %rdx; \ @@ -158,15 +158,15 @@ /* A quick note: it is assumed that the call to `__errno_location' does not modify the stack! */ -#else /* Not _LIBC_REENTRANT. */ -# define SYSCALL_ERROR_HANDLER \ +# else /* Not _LIBC_REENTRANT. */ +# define SYSCALL_ERROR_HANDLER \ 0:movq errno@GOTPCREL(%RIP), %rcx; \ xorl %edx, %edx; \ subq %rax, %rdx; \ movl %edx, (%rcx); \ orq $-1, %rax; \ jmp L(pseudo_end); -#endif /* PIC */ +# endif /* PIC */ /* The Linux/x86-64 kernel expects the system call parameters in registers according to the following table: @@ -204,25 +204,25 @@ Syscalls of more than 6 arguments are not supported. */ -#undef DO_CALL -#define DO_CALL(syscall_name, args) \ +# undef DO_CALL +# define DO_CALL(syscall_name, args) \ DOARGS_##args \ movl $SYS_ify (syscall_name), %eax; \ syscall; -#define DOARGS_0 /* nothing */ -#define DOARGS_1 /* nothing */ -#define DOARGS_2 /* nothing */ -#define DOARGS_3 /* nothing */ -#define DOARGS_4 movq %rcx, %r10; -#define DOARGS_5 DOARGS_4 -#define DOARGS_6 DOARGS_5 +# define DOARGS_0 /* nothing */ +# define DOARGS_1 /* nothing */ +# define DOARGS_2 /* nothing */ +# define DOARGS_3 /* nothing */ +# define DOARGS_4 movq %rcx, %r10; +# define DOARGS_5 DOARGS_4 +# define DOARGS_6 DOARGS_5 #else /* !__ASSEMBLER__ */ /* Define a macro which expands inline into the wrapper code for a system call. */ -#undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ +# undef INLINE_SYSCALL +# define INLINE_SYSCALL(name, nr, args...) \ ({ \ unsigned long resultvar = INTERNAL_SYSCALL (name, , nr, args); \ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar, ), 0)) \ @@ -232,10 +232,10 @@ } \ (long) resultvar; }) -#undef INTERNAL_SYSCALL_DECL -#define INTERNAL_SYSCALL_DECL(err) do { } while (0) +# undef INTERNAL_SYSCALL_DECL +# define INTERNAL_SYSCALL_DECL(err) do { } while (0) -#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ +# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ ({ \ unsigned long resultvar; \ LOAD_ARGS_##nr (args) \ @@ -245,68 +245,126 @@ : "=a" (resultvar) \ : "0" (name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \ (long) resultvar; }) -#undef INTERNAL_SYSCALL -#define INTERNAL_SYSCALL(name, err, nr, args...) \ +# undef INTERNAL_SYSCALL +# define INTERNAL_SYSCALL(name, err, nr, args...) \ INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args) -#undef INTERNAL_SYSCALL_ERROR_P -#define INTERNAL_SYSCALL_ERROR_P(val, err) \ +# undef INTERNAL_SYSCALL_ERROR_P +# define INTERNAL_SYSCALL_ERROR_P(val, err) \ ((unsigned long) (val) >= -4095L) -#undef INTERNAL_SYSCALL_ERRNO -#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) +# undef INTERNAL_SYSCALL_ERRNO +# define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) + +# ifdef SHARED +# define INLINE_VSYSCALL(name, nr, args...) \ + ({ \ + __label__ out; \ + __label__ iserr; \ + INTERNAL_SYSCALL_DECL (sc_err); \ + long int sc_ret; \ + \ + __typeof (__vdso_##name) vdsop = __vdso_##name; \ + PTR_DEMANGLE (vdsop); \ + if (vdsop != NULL) \ + { \ + sc_ret = vdsop (args); \ + if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + goto out; \ + if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \ + goto iserr; \ + } \ + \ + sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \ + if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + { \ + iserr: \ + __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \ + sc_ret = -1L; \ + } \ + out: \ + sc_ret; \ + }) +# define INTERNAL_VSYSCALL(name, err, nr, args...) \ + ({ \ + __label__ out; \ + long int v_ret; \ + \ + __typeof (__vdso_##name) vdsop = __vdso_##name; \ + PTR_DEMANGLE (vdsop); \ + if (vdsop != NULL) \ + { \ + v_ret = vdsop (args); \ + if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \ + || INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \ + goto out; \ + } \ + v_ret = INTERNAL_SYSCALL (name, err, nr, ##args); \ + out: \ + v_ret; \ + }) + +/* List of system calls which are supported as vsyscalls. */ +# define HAVE_CLOCK_GETTIME_VSYSCALL 1 + +# else +# define INLINE_VSYSCALL(name, nr, args...) \ + INLINE_SYSCALL (name, nr, ##args) +# define INTERNAL_VSYSCALL(name, err, nr, args...) \ + INTERNAL_SYSCALL (name, err, nr, ##args) +# endif -#define LOAD_ARGS_0() -#define LOAD_REGS_0 -#define ASM_ARGS_0 +# define LOAD_ARGS_0() +# define LOAD_REGS_0 +# define ASM_ARGS_0 -#define LOAD_ARGS_1(a1) \ +# define LOAD_ARGS_1(a1) \ long int __arg1 = (long) (a1); \ LOAD_ARGS_0 () -#define LOAD_REGS_1 \ +# define LOAD_REGS_1 \ register long int _a1 asm ("rdi") = __arg1; \ LOAD_REGS_0 -#define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1) +# define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1) -#define LOAD_ARGS_2(a1, a2) \ +# define LOAD_ARGS_2(a1, a2) \ long int __arg2 = (long) (a2); \ LOAD_ARGS_1 (a1) -#define LOAD_REGS_2 \ +# define LOAD_REGS_2 \ register long int _a2 asm ("rsi") = __arg2; \ LOAD_REGS_1 -#define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2) +# define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2) -#define LOAD_ARGS_3(a1, a2, a3) \ +# define LOAD_ARGS_3(a1, a2, a3) \ long int __arg3 = (long) (a3); \ LOAD_ARGS_2 (a1, a2) -#define LOAD_REGS_3 \ +# define LOAD_REGS_3 \ register long int _a3 asm ("rdx") = __arg3; \ LOAD_REGS_2 -#define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3) +# define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3) -#define LOAD_ARGS_4(a1, a2, a3, a4) \ +# define LOAD_ARGS_4(a1, a2, a3, a4) \ long int __arg4 = (long) (a4); \ LOAD_ARGS_3 (a1, a2, a3) -#define LOAD_REGS_4 \ +# define LOAD_REGS_4 \ register long int _a4 asm ("r10") = __arg4; \ LOAD_REGS_3 -#define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4) +# define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4) -#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ +# define LOAD_ARGS_5(a1, a2, a3, a4, a5) \ long int __arg5 = (long) (a5); \ LOAD_ARGS_4 (a1, a2, a3, a4) -#define LOAD_REGS_5 \ +# define LOAD_REGS_5 \ register long int _a5 asm ("r8") = __arg5; \ LOAD_REGS_4 -#define ASM_ARGS_5 ASM_ARGS_4, "r" (_a5) +# define ASM_ARGS_5 ASM_ARGS_4, "r" (_a5) -#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ +# define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \ long int __arg6 = (long) (a6); \ LOAD_ARGS_5 (a1, a2, a3, a4, a5) -#define LOAD_REGS_6 \ +# define LOAD_REGS_6 \ register long int _a6 asm ("r9") = __arg6; \ LOAD_REGS_5 -#define ASM_ARGS_6 ASM_ARGS_5, "r" (_a6) +# define ASM_ARGS_6 ASM_ARGS_5, "r" (_a6) #endif /* __ASSEMBLER__ */ diff --git a/sysdeps/unix/sysv/linux/xstatconv.c b/sysdeps/unix/sysv/linux/xstatconv.c index 805e339782..8210798a69 100644 --- a/sysdeps/unix/sysv/linux/xstatconv.c +++ b/sysdeps/unix/sysv/linux/xstatconv.c @@ -1,5 +1,6 @@ /* Convert between the kernel's `struct stat' format, and libc's. - Copyright (C) 1991,1995-1997,2000,2002,2003 Free Software Foundation, Inc. + Copyright (C) 1991,1995-1997,2000,2002,2003,2007 + 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 @@ -20,6 +21,7 @@ #include <errno.h> #include <sys/stat.h> #include <kernel_stat.h> +#include <kernel-features.h> #ifdef STAT_IS_KERNEL_STAT |