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author | Ulrich Drepper <drepper@redhat.com> | 2002-12-19 07:09:42 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2002-12-19 07:09:42 +0000 |
commit | df45b31e8150087fad9ff5889fe1a95054e26730 (patch) | |
tree | 5c3489fd9de8f22f9386144daea297828d00bd7a /nptl/sysdeps/unix/sysv/linux | |
parent | 5e2891795021a78fb975c55377d05919f4dae0c0 (diff) | |
download | glibc-df45b31e8150087fad9ff5889fe1a95054e26730.tar.gz glibc-df45b31e8150087fad9ff5889fe1a95054e26730.tar.xz glibc-df45b31e8150087fad9ff5889fe1a95054e26730.zip |
Update.
2002-12-18 Ulrich Drepper <drepper@redhat.com> * descr.h (struct pthread) [NEED_DL_SYSINFO]: Add sysinfo member. * sysdeps/i386/tls.h (tcbhead_t): Add sysinfo member. Define SYSINFO_OFFSEET if NEED_DL_SYSINFO is defined. (INIT_SYSINFO): New #define. (TLS_TP_INIT): Use INIT_SYSINFO. * sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init): At test to make sure SYSINFO_OFFSET value is correct. * sysdeps/unix/sysv/linux/i386/dl-sysdep.h: New file.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h | 53 | ||||
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c | 9 |
2 files changed, 62 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h b/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h new file mode 100644 index 0000000000..0481fce185 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/i386/dl-sysdep.h @@ -0,0 +1,53 @@ +/* System-specific settings for dynamic linker code. Generic version. + Copyright (C) 2002 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_SYSDEP_H +#define _DL_SYSDEP_H 1 + +/* This macro must be defined to either 0 or 1. + + If 1, then an errno global variable hidden in ld.so will work right with + all the errno-using libc code compiled for ld.so, and there is never a + need to share the errno location with libc. This is appropriate only if + all the libc functions that ld.so uses are called without PLT and always + get the versions linked into ld.so rather than the libc ones. */ + +#define RTLD_PRIVATE_ERRNO 1 + + +/* Traditionally system calls have been made using int $0x80. A + second method was introduced which, if possible, will use the + sysenter/syscall instructions. To signal the presence and where to + find the code the kernel passes an AT_SYSINFO value in the + auxiliary vector to the application. */ +#define NEED_DL_SYSINFO 1 + +#if defined NEED_DL_SYSINFO && !defined __ASSEMBLER__ +extern void _dl_sysinfo_int80 (void) attribute_hidden; +# define DL_SYSINFO_DEFAULT _dl_sysinfo_int80 +# define DL_SYSINFO_IMPLEMENTATION \ + asm (".type _dl_sysinfo_int80,@function\n\t" \ + ".hidden _dl_sysinfo_int80\n" \ + "_dl_sysinfo_int80:\n\t" \ + "int $0x80;\n\t" \ + "ret;\n\t" \ + ".size _dl_sysinfo_int80,.-_dl_sysinfo_int80"); +#endif + +#endif /* dl-sysdep.h */ diff --git a/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c b/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c index 7d91528aaf..87c97343b0 100644 --- a/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c +++ b/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c @@ -20,6 +20,7 @@ #include <unistd.h> #include <list.h> #include "fork.h" +#include <dl-sysdep.h> #include <tls.h> #include <string.h> #include <pthreadP.h> @@ -62,4 +63,12 @@ __libc_pthread_init (ptr, reclaim, functions) str_n_len ("*** MULTIPLE_THREADS_OFFSET out of date\n")); _exit (1); } +#ifdef SYSINFO_OFFSET + if (offsetof (struct pthread, header.data.sysinfo) != SYSINFO_OFFSET) + { + __libc_write (STDERR_FILENO, + str_n_len ("*** SYSINFO_OFFSET out of date\n")); + _exit (1); + } +#endif } |