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| author | Sergey Bugaev <bugaevc@gmail.com> | 2024-03-23 20:32:59 +0300 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-03-23 23:00:30 +0100 |
| commit | dc1a77269c971652a8a5167ec366792eae052e65 (patch) | |
| tree | 5da3b6767ba21b2405404f9c9228a7af5b67decb | |
| parent | a4273efa219480a7f2c9c8fa7bc8bb71c48c3604 (diff) | |
| download | glibc-dc1a77269c971652a8a5167ec366792eae052e65.zip glibc-dc1a77269c971652a8a5167ec366792eae052e65.tar.gz glibc-dc1a77269c971652a8a5167ec366792eae052e65.tar.bz2 | |
htl: Implement some support for TLS_DTV_AT_TP
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-ID: <20240323173301.151066-19-bugaevc@gmail.com>
| -rw-r--r-- | htl/pt-create.c | 2 | ||||
| -rw-r--r-- | sysdeps/htl/dl-thread_gscope_wait.c | 16 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/htl/pt-sysdep.c | 9 |
3 files changed, 25 insertions, 2 deletions
diff --git a/htl/pt-create.c b/htl/pt-create.c index fac61f1..8a735d9 100644 --- a/htl/pt-create.c +++ b/htl/pt-create.c @@ -177,7 +177,9 @@ __pthread_create_internal (struct __pthread **thread, err = ENOMEM; goto failed_thread_tls_alloc; } +#if TLS_TCB_AT_TP pthread->tcb->tcb = pthread->tcb; +#endif /* And initialize the rest of the machine context. This may include additional machine- and system-specific initializations that diff --git a/sysdeps/htl/dl-thread_gscope_wait.c b/sysdeps/htl/dl-thread_gscope_wait.c index 90a9a79..ee0a316 100644 --- a/sysdeps/htl/dl-thread_gscope_wait.c +++ b/sysdeps/htl/dl-thread_gscope_wait.c @@ -20,6 +20,18 @@ #include <pthread.h> #include <htl/pt-internal.h> +static inline int * +thread_gscope_flag (struct __pthread *t) +{ +#if TLS_TCB_AT_TP + return &t->tcb->gscope_flag; +#elif TLS_DTV_AT_TP + return &((tcbprehead_t *) t->tcb - 1)->gscope_flag; +#else +# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined" +#endif +} + void __thread_gscope_wait (void) { @@ -33,10 +45,10 @@ __thread_gscope_wait (void) for (i = 0; i < GL (dl_pthread_num_threads); ++i) { t = GL (dl_pthread_threads[i]); - if (t == NULL || t->tcb->gscope_flag == THREAD_GSCOPE_FLAG_UNUSED) + if (t == NULL || *thread_gscope_flag (t) == THREAD_GSCOPE_FLAG_UNUSED) continue; - gscope_flagp = &t->tcb->gscope_flag; + gscope_flagp = thread_gscope_flag (t); /* We have to wait until this thread is done with the global scope. First tell the thread that we are waiting and diff --git a/sysdeps/mach/hurd/htl/pt-sysdep.c b/sysdeps/mach/hurd/htl/pt-sysdep.c index 270e775..5372cbf 100644 --- a/sysdeps/mach/hurd/htl/pt-sysdep.c +++ b/sysdeps/mach/hurd/htl/pt-sysdep.c @@ -100,7 +100,16 @@ _init_routine (void *stack) to the new stack. Pretend it wasn't allocated so that it remains valid if the main thread terminates. */ thread->stack = 0; +#if TLS_TCB_AT_TP thread->tcb = THREAD_SELF; +#elif TLS_DTV_AT_TP + /* Assuming THREAD_SELF is implemented as subtracting TLS_PRE_TCB_SIZE + from the value of a thread pointer regsiter, this should optimize + down to simply reading that register. */ + thread->tcb = (tcbhead_t *) (((char *) THREAD_SELF) + TLS_PRE_TCB_SIZE); +#else +# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined" +#endif #ifndef PAGESIZE __pthread_default_attr.__guardsize = __vm_page_size; |