c776b3d717
2003-12-02 David Mosberger <davidm@hpl.hp.com> * sysdeps/ia64/elf/initfini.c: Add unwind info. * sysdeps/ia64/dl-machine.h (elf_machine_matches_host): Mark with attribute "unused". (elf_machine_dynamic): Mark with attributes "unused" and "const". (elf_machine_runtime_setup): Likewise. * sysdeps/generic/dl-fptr.c (make_fptr_table): Mark with attribute "always_inline". * sysdeps/ia64/dl-machine.h (__ia64_init_bootstrap_fdesc_table): Likewise. * configure.in: Check whether compiler has libunwind support. * config.make.in (have-cc-with-libunwind): New variable. * config.h.in (HAVE_CC_WITH_LIBUNWIND): New macro. * Makeconfig (gnulib): If have-cc-withh-libunwind is "yes", also mention -lunwind. 003-11-12 David Mosberger <davidm@hpl.hp.com> * sysdeps/unix/sysv/linux/ia64/sysdep.h: Define DO_CALL_VIA_BREAK. Redefine DO_CALL to use vdso if supported, otherwise DO_CALL_VIA_BREAK. Likewise for DO_INLINE_SYSCALL. Make INTERNAL_SYSCALL use DO_INLINE_SYSCALL. * sysdeps/unix/sysv/linux/ia64/vfork.S: Use DO_CALL_VIA_BREAK() instead of DO_CALL(). * sysdeps/unix/sysv/linux/ia64/clone2.S: Use break directly instead of DO_CALL(). * sysdeps/unix/sysv/linux/ia64/brk.S (__curbrk): Restructure it to take advantage of DO_CALL() macro. * sysdeps/unix/sysv/linux/ia64/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/ia64/getcontext.S: Likewise. * elf/rtld.c (dl_main): Restrict dl_sysinfo_dso check to first program header. On ia64, the check failed previously because there are two program headers. * sysdeps/generic/s_nexttowardf.c: Likewise. * math/bug-nexttoward.c: New file.
141 lines
4 KiB
C
141 lines
4 KiB
C
/* Definition for thread-local data handling. nptl/IA-64 version.
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Copyright (C) 2003 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _TLS_H
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#define _TLS_H 1
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#include <dl-sysdep.h>
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#ifndef __ASSEMBLER__
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# include <stddef.h>
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# include <stdint.h>
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# include <stdlib.h>
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# include <list.h>
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/* Type for the dtv. */
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typedef union dtv
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{
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size_t counter;
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void *pointer;
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} dtv_t;
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typedef struct
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{
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dtv_t *dtv;
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void *private;
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} tcbhead_t;
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register struct pthread *__thread_self __asm__("r13");
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# define TLS_MULTIPLE_THREADS_IN_TCB 1
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#else /* __ASSEMBLER__ */
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# include <tcb-offsets.h>
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#endif
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/* We require TLS support in the tools. */
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#ifndef HAVE_TLS_SUPPORT
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# error "TLS support is required."
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#endif
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/* Signal that TLS support is available. */
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#define USE_TLS 1
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/* Alignment requirement for the stack. */
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#define STACK_ALIGN 16
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#ifndef __ASSEMBLER__
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/* Get system call information. */
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# include <sysdep.h>
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/* This is the size of the initial TCB. */
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# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
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/* Alignment requirements for the initial TCB. */
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# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
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/* This is the size of the TCB. */
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# define TLS_TCB_SIZE sizeof (tcbhead_t)
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/* This is the size we need before TCB. */
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# define TLS_PRE_TCB_SIZE sizeof (struct pthread)
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/* Alignment requirements for the TCB. */
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# define TLS_TCB_ALIGN __alignof__ (struct pthread)
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/* The DTV is allocated at the TP; the TCB is placed elsewhere. */
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# define TLS_DTV_AT_TP 1
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/* Get the thread descriptor definition. */
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# include <nptl/descr.h>
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/* Install the dtv pointer. The pointer passed is to the element with
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index -1 which contain the length. */
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# define INSTALL_DTV(descr, dtvp) \
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((tcbhead_t *) (descr))->dtv = (dtvp) + 1
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/* Install new dtv for current thread. */
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# define INSTALL_NEW_DTV(DTV) \
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(((tcbhead_t *)__thread_self)->dtv = (DTV))
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/* Return dtv of given thread descriptor. */
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# define GET_DTV(descr) \
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(((tcbhead_t *) (descr))->dtv)
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#define THREAD_SELF_SYSINFO (((tcbhead_t *) __thread_self)->private)
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#define THREAD_SYSINFO(pd) (((tcbhead_t *) ((pd) + 1))->private)
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#if defined NEED_DL_SYSINFO
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# define INIT_SYSINFO THREAD_SELF_SYSINFO = (void *) GL(dl_sysinfo)
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#else
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# define INIT_SYSINFO NULL
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#endif
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/* Code to initially initialize the thread pointer. This might need
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special attention since 'errno' is not yet available and if the
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operation can cause a failure 'errno' must not be touched. */
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# define TLS_INIT_TP(thrdescr, secondcall) \
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(__thread_self = (thrdescr), INIT_SYSINFO, NULL)
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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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(((tcbhead_t *)__thread_self)->dtv)
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/* Return the thread descriptor for the current thread. */
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# define THREAD_SELF (__thread_self - 1)
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/* Magic for libthread_db to know how to do THREAD_SELF. */
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# define DB_THREAD_SELF REGISTER (64, 13 * 8, -sizeof (struct pthread))
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/* Access to data in the thread descriptor is easy. */
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#define THREAD_GETMEM(descr, member) \
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descr->member
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#define THREAD_GETMEM_NC(descr, member, idx) \
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descr->member[idx]
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#define THREAD_SETMEM(descr, member, value) \
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descr->member = (value)
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#define THREAD_SETMEM_NC(descr, member, idx, value) \
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descr->member[idx] = (value)
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#endif /* __ASSEMBLER__ */
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#endif /* tls.h */
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