Update.

2003-04-22  Jakub Jelinek  <jakub@redhat.com>

	* 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.

10 files changed, 32 insertions, 35 deletions

diff --git a/nptl/sysdeps/ia64/tcb-offsets.sym b/nptl/sysdeps/ia64/tcb-offsets.sym
index 11cc06a..9f92bb6 100644
--- a/nptl/sysdeps/ia64/tcb-offsets.sym
+++ b/nptl/sysdeps/ia64/tcb-offsets.sym
@@ -1,4 +1,4 @@
 #include <sysdep.h>
 #include <tls.h>
 
-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 d6b7560..58ee030 100644
--- a/nptl/sysdeps/powerpc/tcb-offsets.sym
+++ b/nptl/sysdeps/powerpc/tcb-offsets.sym
@@ -1,13 +1,4 @@
 #include <sysdep.h>
 #include <tls.h>
 
---
-
--- 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 0ef5655..e3e0424 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 9d00e4e..f5c6406 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 3386f1d..940c933 100644
--- a/nptl/sysdeps/sh/tcb-offsets.sym
+++ b/nptl/sysdeps/sh/tcb-offsets.sym
@@ -1,5 +1,5 @@
 #include <sysdep.h>
 #include <tls.h>
 
-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 667abce..930cc14 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 bcbcdd7..e811ad7 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 <nptl/sysdeps/pthread/createthread.c>
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 d256f8d..f82addb 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 5483586..00dc3a2 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 16f8ad5..10189a4 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; \