diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/ChangeLog | 7 | ||||
| -rw-r--r-- | linuxthreads/manager.c | 7 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/useldt.h | 3 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/sh/pt-machine.h | 11 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/sh/tls.h | 111 |
5 files changed, 135 insertions, 4 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 5f79ed7160..cfcfe4c872 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,10 @@ +2002-04-08 Jakub Jelinek <jakub@redhat.com> + + * manager.c (__pthread_manager_event): Use self instead of arg + for INIT_THREAD_SELF. + * sysdeps/i386/useldt.h (INIT_THREAD_SELF): Use sizeof (struct + _pthread_descr_struct) instead of sizeof (*descr). + 2002-04-05 Ulrich Drepper <drepper@redhat.com> * sysdeps/ia64/pt-machine.h: Protect against multiple inclusion. diff --git a/linuxthreads/manager.c b/linuxthreads/manager.c index c846895d19..b52f65137f 100644 --- a/linuxthreads/manager.c +++ b/linuxthreads/manager.c @@ -244,15 +244,16 @@ __pthread_manager(void *arg) int __pthread_manager_event(void *arg) { + pthread_descr self = arg; /* If we have special thread_self processing, initialize it. */ #ifdef INIT_THREAD_SELF - INIT_THREAD_SELF(arg, 1); + INIT_THREAD_SELF(self, 1); #endif /* Get the lock the manager will free once all is correctly set up. */ - __pthread_lock (THREAD_GETMEM(((pthread_descr) arg), p_lock), NULL); + __pthread_lock (THREAD_GETMEM(self, p_lock), NULL); /* Free it immediately. */ - __pthread_unlock (THREAD_GETMEM(((pthread_descr) arg), p_lock)); + __pthread_unlock (THREAD_GETMEM(self, p_lock)); return __pthread_manager(arg); } diff --git a/linuxthreads/sysdeps/i386/useldt.h b/linuxthreads/sysdeps/i386/useldt.h index 02d079c9ef..116e95d042 100644 --- a/linuxthreads/sysdeps/i386/useldt.h +++ b/linuxthreads/sysdeps/i386/useldt.h @@ -64,7 +64,8 @@ extern int __modify_ldt (int, struct modify_ldt_ldt_s *, size_t); #define INIT_THREAD_SELF(descr, nr) \ { \ struct modify_ldt_ldt_s ldt_entry = \ - { nr, (unsigned long int) descr, sizeof (*descr), 1, 0, 0, 0, 0, 1, 0 }; \ + { nr, (unsigned long int) descr, sizeof (struct _pthread_descr_struct), \ + 1, 0, 0, 0, 0, 1, 0 }; \ if (__modify_ldt (1, &ldt_entry, sizeof (ldt_entry)) != 0) \ abort (); \ __asm__ __volatile__ ("movw %w0, %%gs" : : "q" (nr * 8 + 7)); \ diff --git a/linuxthreads/sysdeps/sh/pt-machine.h b/linuxthreads/sysdeps/sh/pt-machine.h index d7030a241d..1d055c0b3d 100644 --- a/linuxthreads/sysdeps/sh/pt-machine.h +++ b/linuxthreads/sysdeps/sh/pt-machine.h @@ -45,6 +45,11 @@ testandset (int *spinlock) return (ret == 0); } +/* We want the OS to assign stack addresses. */ +#define FLOATING_STACKS 1 + +/* Maximum size of the stack if the rlimit is unlimited. */ +#define ARCH_STACK_MAX_SIZE 32*1024*1024 /* Get some notion of the current stack. Need not be exactly the top of the stack, just something somewhere in the current frame. */ @@ -61,4 +66,10 @@ struct _pthread_descr_struct; #define INIT_THREAD_SELF(descr, nr) \ ({ __asm__ __volatile__("ldc %0,gbr" : : "r" (descr));}) +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) THREAD_SELF->member +#define THREAD_GETMEM_NC(descr, member) THREAD_SELF->member +#define THREAD_SETMEM(descr, member, value) THREAD_SELF->member = (value) +#define THREAD_SETMEM_NC(descr, member, value) THREAD_SELF->member = (value) + #endif /* pt-machine.h */ diff --git a/linuxthreads/sysdeps/sh/tls.h b/linuxthreads/sysdeps/sh/tls.h new file mode 100644 index 0000000000..e8cf504387 --- /dev/null +++ b/linuxthreads/sysdeps/sh/tls.h @@ -0,0 +1,111 @@ +/* Definition for thread-local data handling. linuxthreads/SH 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 _TLS_H +#define _TLS_H + +#include <stddef.h> + +#include <pt-machine.h> + +/* Type for the dtv. */ +typedef union dtv +{ + size_t counter; + void *pointer; +} dtv_t; + + +typedef struct +{ + void *tcb; /* Pointer to the TCB. Not necessary the + thread descriptor used by libpthread. */ + dtv_t *dtv; + void *self; /* Pointer to the thread descriptor. */ +} tcbhead_t; + + +/* We can support TLS only if the floating-stack support is available. */ +#if defined FLOATING_STACKS && defined HAVE_TLS_SUPPORT + +/* Get system call information. */ +# include <sysdep.h> + +/* Signal that TLS support is available. */ +# define USE_TLS 1 + + +/* Get the thread descriptor definition. */ +# include <linuxthreads/descr.h> + +/* This is the size of the initial TCB. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct) + +/* The TLS blocks start right after the TCB. */ +# define TLS_DTV_AT_TP 1 + + +/* 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(dtv) \ + ({ struct _pthread_descr_struct *__descr; \ + THREAD_SETMEM (__descr, p_header.data.dtvp, dtv); }) + +/* 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. */ +# define TLS_INIT_TP(descr) \ + do { \ + void *_descr = (descr); \ + int result; \ + tcbhead_t *head = _descr; \ + \ + head->tcb = _descr; \ + /* For now the thread descriptor is at the same address. */ \ + head->self = _descr; \ + \ + asm ("ldc %0,gbr" : : "r" (_descr)); \ + } while (0) + + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + ({ struct _pthread_descr_struct *__descr; \ + THREAD_GETMEM (__descr, p_header.data.dtvp); }) + +#endif /* FLOATING_STACKS && HAVE_TLS_SUPPORT */ + +#endif /* tls.h */ |