diff options
Diffstat (limited to 'nptl/init.c')
| -rw-r--r-- | nptl/init.c | 43 |
1 files changed, 20 insertions, 23 deletions
diff --git a/nptl/init.c b/nptl/init.c index 4449a9dbc0..95b9c7be5d 100644 --- a/nptl/init.c +++ b/nptl/init.c @@ -35,27 +35,6 @@ #include <lowlevellock.h> -#ifndef __NR_set_tid_address -/* XXX For the time being... Once we can rely on the kernel headers - having the definition remove these lines. */ -#if defined __s390__ -# define __NR_set_tid_address 252 -#elif defined __ia64__ -# define __NR_set_tid_address 1233 -#elif defined __i386__ -# define __NR_set_tid_address 258 -#elif defined __x86_64__ -# define __NR_set_tid_address 218 -#elif defined __powerpc__ -# define __NR_set_tid_address 232 -#elif defined __sparc__ -# define __NR_set_tid_address 166 -#else -# error "define __NR_set_tid_address" -#endif -#endif - - /* Size and alignment of static TLS block. */ size_t __static_tls_size; size_t __static_tls_align_m1; @@ -237,7 +216,7 @@ sighandler_setxid (int sig, siginfo_t *si, void *ctx) __xidcmd->id[1], __xidcmd->id[2]); if (atomic_decrement_val (&__xidcmd->cntr) == 0) - lll_futex_wake (&__xidcmd->cntr, 1); + lll_futex_wake (&__xidcmd->cntr, 1, LLL_PRIVATE); /* Reset the SETXID flag. */ struct pthread *self = THREAD_SELF; @@ -246,7 +225,7 @@ sighandler_setxid (int sig, siginfo_t *si, void *ctx) /* And release the futex. */ self->setxid_futex = 1; - lll_futex_wake (&self->setxid_futex, 1); + lll_futex_wake (&self->setxid_futex, 1, LLL_PRIVATE); } @@ -255,6 +234,9 @@ sighandler_setxid (int sig, siginfo_t *si, void *ctx) extern void **__libc_dl_error_tsd (void) __attribute__ ((const)); +/* This can be set by the debugger before initialization is complete. */ +static bool __nptl_initial_report_events; + void __pthread_initialize_minimal_internal (void) { @@ -297,6 +279,18 @@ __pthread_initialize_minimal_internal (void) #endif set_robust_list_not_avail (); +#ifndef __ASSUME_PRIVATE_FUTEX + /* Private futexes are always used (at least internally) so that + doing the test once this early is beneficial. */ + { + int word; + word = INTERNAL_SYSCALL (futex, err, 3, &word, + FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1); + if (!INTERNAL_SYSCALL_ERROR_P (word, err)) + THREAD_SETMEM (pd, header.private_futex, FUTEX_PRIVATE_FLAG); + } +#endif + /* Set initial thread's stack block from 0 up to __libc_stack_end. It will be bigger than it actually is, but for unwind.c/pt-longjmp.c purposes this is good enough. */ @@ -306,6 +300,9 @@ __pthread_initialize_minimal_internal (void) INIT_LIST_HEAD (&__stack_user); list_add (&pd->list, &__stack_user); + /* Before initializing __stack_user, the debugger could not find us and + had to set __nptl_initial_report_events. Propagate its setting. */ + THREAD_SETMEM (pd, report_events, __nptl_initial_report_events); /* Install the cancellation signal handler. If for some reason we cannot install the handler we do not abort. Maybe we should, but |