From 299601a1ef8df4532ded24194c4556e294ab1e6e Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Fri, 25 Apr 2003 09:12:43 +0000 Subject: Update. 2003-04-22 Jakub Jelinek * include/link.h (NO_TLS_OFFSET): Define to 0 if not defined. * elf/dl-close.c (_dl_close): Use NO_TLS_OFFSET. * elf/dl-object.c (_dl_new_object): Initialize l_tls_offset to NO_TLS_OFFSET. * elf/rtld.c (_dl_start_final, _dl_start): Likewise. * elf/dl-reloc.c (CHECK_STATIC_TLS): Use NO_TLS_OFFSET. * sysdeps/generic/dl-tls.c (_dl_allocate_tls_init): Likewise. * sysdeps/powerpc/dl-tls.h (TLS_TPREL_VALUE): Don't subtract TLS_TCB_SIZE. --- nptl/sysdeps/ia64/tcb-offsets.sym | 2 +- nptl/sysdeps/powerpc/tcb-offsets.sym | 11 +------- nptl/sysdeps/powerpc/tls.h | 31 +++++++++++----------- nptl/sysdeps/pthread/createthread.c | 8 ++++++ nptl/sysdeps/sh/tcb-offsets.sym | 2 +- nptl/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h | 2 +- .../sysdeps/unix/sysv/linux/powerpc/createthread.c | 2 +- .../sysv/linux/powerpc/powerpc32/sysdep-cancel.h | 3 +-- .../sysv/linux/powerpc/powerpc64/sysdep-cancel.h | 3 +-- nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h | 3 +-- 10 files changed, 32 insertions(+), 35 deletions(-) (limited to 'nptl/sysdeps') diff --git a/nptl/sysdeps/ia64/tcb-offsets.sym b/nptl/sysdeps/ia64/tcb-offsets.sym index 11cc06ab31..9f92bb62cd 100644 --- a/nptl/sysdeps/ia64/tcb-offsets.sym +++ b/nptl/sysdeps/ia64/tcb-offsets.sym @@ -1,4 +1,4 @@ #include #include -MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) - sizeof (struct pthread) +MULTIPLE_THREADS_OFFSET -sizeof(int) diff --git a/nptl/sysdeps/powerpc/tcb-offsets.sym b/nptl/sysdeps/powerpc/tcb-offsets.sym index d6b7560b8e..58ee03072e 100644 --- a/nptl/sysdeps/powerpc/tcb-offsets.sym +++ b/nptl/sysdeps/powerpc/tcb-offsets.sym @@ -1,13 +1,4 @@ #include #include --- - --- Abuse tls.h macros to derive offsets relative to the thread register. -# undef __thread_register -# define __thread_register ((void *) 0) -# define thread_offsetof(mem) ((void *) &THREAD_SELF->mem - (void *) 0) - -#if TLS_MULTIPLE_THREADS_IN_TCB -MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads) -#endif +MULTIPLE_THREADS_OFFSET ((void *) &p_multiple_threads ((struct pthread) ((void *) 0 - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)) - (void *) 0) diff --git a/nptl/sysdeps/powerpc/tls.h b/nptl/sysdeps/powerpc/tls.h index 0ef5655b8d..e3e0424fe0 100644 --- a/nptl/sysdeps/powerpc/tls.h +++ b/nptl/sysdeps/powerpc/tls.h @@ -69,22 +69,19 @@ typedef struct } tcbhead_t; /* This is the size of the initial TCB. */ -# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) +# define TLS_INIT_TCB_SIZE 0 /* Alignment requirements for the initial TCB. */ -# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) +# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread) /* This is the size of the TCB. */ -# define TLS_TCB_SIZE sizeof (tcbhead_t) +# define TLS_TCB_SIZE 0 /* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (tcbhead_t) +# define TLS_TCB_ALIGN __alignof__ (struct pthread) /* This is the size we need before TCB. */ -# define TLS_PRE_TCB_SIZE sizeof (struct pthread) - -/* XXX if __alignof__ (struct pthread) > __alignof (tcbhead_t) - we could be in trouble. -- paulus */ +# define TLS_PRE_TCB_SIZE (sizeof (struct pthread) + 32) # ifndef __powerpc64__ /* Register r2 (tp) is reserved by the ABI as "thread pointer". */ @@ -98,37 +95,37 @@ register void *__thread_register __asm__ ("r13"); /* The following assumes that TP (R2 or R13) points to the end of the TCB + 0x7000 (per the ABI). This implies that TCB address is - TP-(TLS_TCB_SIZE + 0x7000). As we define TLS_DTV_AT_TP we can + TP - 0x7000. As we define TLS_DTV_AT_TP we can assume that the pthread struct is allocated immediately ahead of the TCB. This implies that the pthread_descr address is - TP-(TLS_PRE_TCB_SIZE + TLS_TCB_SIZE + 0x7000). */ + TP - (TLS_PRE_TCB_SIZE + 0x7000). */ # define TLS_TCB_OFFSET 0x7000 /* Install the dtv pointer. The pointer passed is to the element with index -1 which contain the length. */ # define INSTALL_DTV(tcbp, dtvp) \ - ((tcbhead_t *) (tcbp))->dtv = dtvp + 1 + ((tcbhead_t *) (tcbp))[-1].dtv = dtvp + 1 /* Install new dtv for current thread. */ # define INSTALL_NEW_DTV(dtv) (THREAD_DTV() = (dtv)) /* Return dtv of given thread descriptor. */ -# define GET_DTV(tcbp) (((tcbhead_t *) (tcbp))->dtv) +# define GET_DTV(tcbp) (((tcbhead_t *) (tcbp))[-1].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(tcbp, secondcall) \ - (__thread_register = (void *) (tcbp) + TLS_TCB_OFFSET + TLS_TCB_SIZE, NULL) + (__thread_register = (void *) (tcbp) + TLS_TCB_OFFSET, NULL) /* Return the address of the dtv for the current thread. */ # define THREAD_DTV() \ - (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET - TLS_TCB_SIZE))->dtv) + (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv) /* Return the thread descriptor for the current thread. */ # define THREAD_SELF \ ((struct pthread *) (__thread_register \ - - TLS_TCB_OFFSET - TLS_TCB_SIZE - TLS_PRE_TCB_SIZE)) + - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)) /* Read member of the thread descriptor directly. */ # define THREAD_GETMEM(descr, member) ((void)(descr), (THREAD_SELF)->member) @@ -145,6 +142,10 @@ register void *__thread_register __asm__ ("r13"); # define THREAD_SETMEM_NC(descr, member, idx, value) \ ((void)(descr), (THREAD_SELF)->member[idx] = (value)) +/* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some + different value to mean unset l_tls_offset. */ +# define NO_TLS_OFFSET -1 + #endif /* __ASSEMBLER__ */ #endif /* tls.h */ diff --git a/nptl/sysdeps/pthread/createthread.c b/nptl/sysdeps/pthread/createthread.c index 9d00e4e135..f5c640607a 100644 --- a/nptl/sysdeps/pthread/createthread.c +++ b/nptl/sysdeps/pthread/createthread.c @@ -87,7 +87,11 @@ create_thread (struct pthread *pd, STACK_VARIABLES_PARMS) thread might not yet have the flag set. No need to set the global variable again if this is what we use. */ #ifdef TLS_MULTIPLE_THREADS_IN_TCB +# if TLS_DTV_AT_TP + p_multiple_threads (THREAD_SELF) = 1; +# else THREAD_SETMEM (THREAD_SELF, header.multiple_threads, 1); +# endif #endif /* Now fill in the information about the new thread in @@ -159,7 +163,11 @@ create_thread (struct pthread *pd, STACK_VARIABLES_PARMS) not yet have the flag set. No need to set the global variable again if this is what we use. */ #ifdef TLS_MULTIPLE_THREADS_IN_TCB +# if TLS_DTV_AT_TP + p_multiple_threads (THREAD_SELF) = 1; +# else THREAD_SETMEM (THREAD_SELF, header.multiple_threads, 1); +# endif #endif return 0; diff --git a/nptl/sysdeps/sh/tcb-offsets.sym b/nptl/sysdeps/sh/tcb-offsets.sym index 3386f1d056..940c933edf 100644 --- a/nptl/sysdeps/sh/tcb-offsets.sym +++ b/nptl/sysdeps/sh/tcb-offsets.sym @@ -1,5 +1,5 @@ #include #include -MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) +MULTIPLE_THREADS_OFFSET ((char *) &p_multiple_threads ((struct pthread *)0) - (char *) 0) TLS_PRE_TCB_SIZE sizeof (struct pthread) diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h index 667abce340..930cc14e45 100644 --- a/nptl/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h @@ -101,7 +101,7 @@ __syscall_error_##args: \ # ifndef __ASSEMBLER__ # define SINGLE_THREAD_P \ - __builtin_expect (THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0, 1) + __builtin_expect (p_multiple_threads (THREAD_SELF) == 0, 1) # else # define SINGLE_THREAD_P \ adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14 diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c b/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c index bcbcdd724b..e811ad74eb 100644 --- a/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c +++ b/nptl/sysdeps/unix/sysv/linux/powerpc/createthread.c @@ -19,7 +19,7 @@ /* Value passed to 'clone' for initialization of the thread register. */ #define TLS_VALUE ((void *) (pd) \ - + TLS_TCB_OFFSET + TLS_TCB_SIZE + TLS_PRE_TCB_SIZE) + + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE) /* Get the real implementation. */ #include diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h index d256f8d8b2..f82addb3ad 100644 --- a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h @@ -86,8 +86,7 @@ # ifndef __ASSEMBLER__ # define SINGLE_THREAD_P \ - __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ - header.multiple_threads) == 0, 1) + __builtin_expect (p_multiple_threads (THREAD_SELF) == 0, 1) # else # define SINGLE_THREAD_P \ lwz 10,MULTIPLE_THREADS_OFFSET(2); \ diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h index 5483586c7b..00dc3a2a6a 100644 --- a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h @@ -86,8 +86,7 @@ # ifndef __ASSEMBLER__ # define SINGLE_THREAD_P \ - __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ - header.multiple_threads) == 0, 1) + __builtin_expect (p_multiple_threads (THREAD_SELF) == 0, 1) # else # define SINGLE_THREAD_P \ lwz 10,MULTIPLE_THREADS_OFFSET(13); \ diff --git a/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h index 16f8ad5e0f..10189a49b5 100644 --- a/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h +++ b/nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h @@ -117,8 +117,7 @@ # ifndef __ASSEMBLER__ # define SINGLE_THREAD_P \ - __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ - header.multiple_threads) == 0, 1) + __builtin_expect (p_multiple_threads (THREAD_SELF) == 0, 1) # else # define SINGLE_THREAD_P \ stc gbr,r0; \ -- cgit v1.2.3