Update.

2003-02-07  Jim Meyering  <jim@meyering.net>

	* io/ftw.c: Add autoconf-recommended block of alloca-related code.
	Include autoconf-recommended block of dirent/NAMELEN-related
	definitions and includes.  Use NAMELEN throughout, rather than
	_D_EXACT_NAMLEN.
	[_LIBC]: Define NAMELEN to _D_EXACT_NAMLEN.
	[!_LIBC] (__getcwd): Define to xgetcwd and declare xgetcwd.
	(stpcpy): Declare, if necessary.
	(mempcpy): Define, if necessary.
	[!_LIBC] (__stpcpy, __mempcpy): Define.
	[!_LIBC] (LXSTAT, XSTAT): Define.
	(lstat) [!LIBC && !LSTAT_FOLLOWS_SLASHED_SYMLINK]: Define to rpl_lstat.
	(find_object): Don't use c99-style struct initializer.
	Tweak wording in a couple comments.

ChangeLog

@@ -1,3 +1,19 @@
+2003-02-07  Jim Meyering  <jim@meyering.net>
+
+	* io/ftw.c: Add autoconf-recommended block of alloca-related code.
+	Include autoconf-recommended block of dirent/NAMELEN-related
+	definitions and includes.  Use NAMELEN throughout, rather than
+	_D_EXACT_NAMLEN.
+	[_LIBC]: Define NAMELEN to _D_EXACT_NAMLEN.
+	[!_LIBC] (__getcwd): Define to xgetcwd and declare xgetcwd.
+	(stpcpy): Declare, if necessary.
+	(mempcpy): Define, if necessary.
+	[!_LIBC] (__stpcpy, __mempcpy): Define.
+	[!_LIBC] (LXSTAT, XSTAT): Define.
+	(lstat) [!LIBC && !LSTAT_FOLLOWS_SLASHED_SYMLINK]: Define to rpl_lstat.
+	(find_object): Don't use c99-style struct initializer.
+	Tweak wording in a couple comments.
+
 2003-02-07  Kaz Kojima  <kkojima@rr.iij4u.or.jp>
 
 	* elf/tls-macros.h: Add non-PIC TLS macros and fix clobber list

io/ftw.c

@@ -22,7 +22,42 @@
 # include <config.h>
 #endif
 
-#include <dirent.h>
+#if __GNUC__
+# define alloca __builtin_alloca
+#else
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #  pragma alloca
+#  else
+char *alloca ();
+#  endif
+# endif
+#endif
+
+#if defined _LIBC
+# include <dirent.h>
+# define NAMLEN(dirent) _D_EXACT_NAMLEN (dirent)
+#else
+# if HAVE_DIRENT_H
+#  include <dirent.h>
+#  define NAMLEN(dirent) strlen ((dirent)->d_name)
+# else
+#  define dirent direct
+#  define NAMLEN(dirent) (dirent)->d_namlen
+#  if HAVE_SYS_NDIR_H
+#   include <sys/ndir.h>
+#  endif
+#  if HAVE_SYS_DIR_H
+#   include <sys/dir.h>
+#  endif
+#  if HAVE_NDIR_H
+#   include <ndir.h>
+#  endif
+# endif
+#endif
+
 #include <errno.h>
 #include <ftw.h>
 #include <limits.h>
@@ -39,6 +74,15 @@
 # include <sys/stat.h>
 #endif
 
+#if ! _LIBC && !HAVE_DECL_STPCPY && !defined stpcpy
+char *stpcpy ();
+#endif
+
+#if ! _LIBC && ! defined HAVE_MEMPCPY && ! defined mempcpy
+/* Be CAREFUL that there are no side effects in N.  */
+# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
+#endif
+
 /* #define NDEBUG 1 */
 #include <assert.h>
 
@@ -50,11 +94,16 @@
 # undef __fchdir
 # define __fchdir fchdir
 # undef __getcwd
-# define __getcwd getcwd
+# define __getcwd(P, N) xgetcwd ()
+extern char *xgetcwd (void);
+# undef __mempcpy
+# define __mempcpy mempcpy
 # undef __opendir
 # define __opendir opendir
 # undef __readdir64
 # define __readdir64 readdir
+# undef __stpcpy
+# define __stpcpy stpcpy
 # undef __tdestroy
 # define __tdestroy tdestroy
 # undef __tfind
@@ -69,6 +118,15 @@
 # define MAX(a, b) ((a) > (b) ? (a) : (b))
 #endif
 
+/* Arrange to make lstat calls go through the wrapper function
+   on systems with an lstat function that does not dereference symlinks
+   that are specified with a trailing slash.  */
+#if ! _LIBC && ! LSTAT_FOLLOWS_SLASHED_SYMLINK
+int rpl_lstat (const char *, struct stat *);
+# undef lstat
+# define lstat(Name, Stat_buf) rpl_lstat(Name, Stat_buf)
+#endif
+
 #ifndef __set_errno
 # define __set_errno(Val) errno = (Val)
 #endif
@@ -79,8 +137,13 @@
 # define NFTW_NAME nftw
 # define INO_T ino_t
 # define STAT stat
-# define LXSTAT __lxstat
+# ifdef _LIBC
-# define XSTAT __xstat
+#  define LXSTAT __lxstat
+#  define XSTAT __xstat
+# else
+#  define LXSTAT(V,f,sb) lstat (f,sb)
+#  define XSTAT(V,f,sb) stat (f,sb)
+# endif
 # define FTW_FUNC_T __ftw_func_t
 # define NFTW_FUNC_T __nftw_func_t
 #endif
@@ -124,7 +187,7 @@ struct ftw_data
   int flags;
 
   /* Conversion array for flag values.  It is the identity mapping for
-     `nftw' calls, otherwise it maps the values to those know by
+     `nftw' calls, otherwise it maps the values to those known by
      `ftw'.  */
   const int *cvt_arr;
 
@@ -140,9 +203,8 @@ struct ftw_data
 };
 
 
-/* Internally we use the FTW_* constants used for `nftw'.  When the
+/* Internally we use the FTW_* constants used for `nftw'.  When invoked
-   process called `ftw' we must reduce the flag to the known flags
+   as `ftw', map each flag to the subset of values used by `ftw'.  */
-   for `ftw'.  */
 static const int nftw_arr[] =
 {
   FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_SL, FTW_DP, FTW_SLN
@@ -188,7 +250,9 @@ add_object (struct ftw_data *data, struct STAT *st)
 static inline int
 find_object (struct ftw_data *data, struct STAT *st)
 {
-  struct known_object obj = { .dev = st->st_dev, .ino = st->st_ino };
+  struct known_object obj;
+  obj.dev = st->st_dev;
+  obj.ino = st->st_ino;
   return __tfind (&obj, &data->known_objects, object_compare) != NULL;
 }
 
@@ -216,7 +280,7 @@ open_dir_stream (struct ftw_data *data, struct dir_data *dirp)
 
 	  while ((d = __readdir64 (st)) != NULL)
 	    {
-	      size_t this_len = _D_EXACT_NAMLEN (d);
+	      size_t this_len = NAMLEN (d);
 	      if (actsize + this_len + 2 >= bufsize)
 		{
 		  char *newp;
@@ -354,7 +418,7 @@ process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,
 
 	      if (result == 0 && (data->flags & FTW_CHDIR))
 		{
-		  /* Change back to current directory.  */
+		  /* Change back to the parent directory.  */
 		  int done = 0;
 		  if (dir->stream != NULL)
 		    if (__fchdir (dirfd (dir->stream)) == 0)
@@ -452,7 +516,7 @@ ftw_dir (struct ftw_data *data, struct STAT *st)
 
   while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)
     {
-      result = process_entry (data, &dir, d->d_name, _D_EXACT_NAMLEN (d));
+      result = process_entry (data, &dir, d->d_name, NAMLEN (d));
       if (result != 0)
 	break;
     }

linuxthreads/ChangeLog

@@ -1,3 +1,29 @@
+2003-02-07  Kaz Kojima  <kkojima@rr.iij4u.or.jp>
+
+	* sysdeps/sh/Makefile: New file.
+	* sysdeps/sh/tcb-offsets.sym: Likewise.
+	* sysdeps/sh/tls.h: Don't include sysdep.h. Move include
+	of linuxthreads/descr.h after the definition of THREAD_SELF.
+	(tcbhead_t): Use IA64 type tcbhead_t for TLS case.
+	(TLS_TCB_SIZE): Set size of tcbhead_t.
+	(TLS_PRE_TCB_SIZE): Define.
+	(INSTALL_NEW_DTV): Set dtv of tcbhead_t structure instead of
+	a member of thread structure.
+	(THREAD_DTV): Likewise.
+	(TLS_INIT_TP_EXPENSIVE): Remove.
+	(TLS_INIT_TP): Set gbr register only.
+	(THREAD_SELF): New.
+	(INIT_THREAD_SELF): Likewise.
+	(NONTLS_INIT_TP): New.
+	* sysdeps/unix/sysv/linux/sh/pt-initfini.c (__fpscr_values):
+	Remove.
+	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (PSEUDO): Add
+	SYSCALL_INST_PAD macro after DO_CALL.
+	(SINGLE_THREAD_P): Fix non-PIC and TLS case so to read the
+	correct	variable.
+	* sysdeps/unix/sysv/linux/sh/vfork.S (__vfork): Branch to __fork
+	whenever libpthread.so is loaded.
+
 2003-02-08  Andreas Schwab  <schwab@suse.de>
 
 	* sysdeps/unix/sysv/linux/m68k/vfork.S: Branch to __fork whenever

linuxthreads/sysdeps/sh/Makefile

@@ -0,0 +1,3 @@
+ifeq ($(subdir),csu)
+gen-as-const-headers += tcb-offsets.sym
+endif

linuxthreads/sysdeps/sh/tcb-offsets.sym

@@ -0,0 +1,10 @@
+#include <sysdep.h>
+#include <tls.h>
+
+--
+#ifdef USE_TLS
+MULTIPLE_THREADS_OFFSET offsetof (struct _pthread_descr_struct, p_header.data.multiple_threads)
+TLS_PRE_TCB_SIZE	sizeof (struct _pthread_descr_struct)
+#else
+MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
+#endif

linuxthreads/sysdeps/sh/tls.h

@@ -34,15 +34,6 @@ typedef union dtv
   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.  */
-  int multiple_threads;
-} tcbhead_t;
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
 #endif /* __ASSEMBLER__ */
@@ -55,73 +46,101 @@ typedef struct
 /* Signal that TLS support is available.  */
 # define USE_TLS	1
 
-#ifndef __ASSEMBLER__
+# ifndef __ASSEMBLER__
 
-/* Get system call information.  */
+typedef struct
-# include <sysdep.h>
+{
-
+  dtv_t *dtv;
-/* Get the thread descriptor definition.  */
+  void *private;
-# include <linuxthreads/descr.h>
+} tcbhead_t;
 
 /* This is the size of the initial TCB.  */
-# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
+#  define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
 
 /* Alignment requirements for the initial TCB.  */
-# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
+#  define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
 
 /* This is the size of the TCB.  */
-# define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct)
+#  define TLS_TCB_SIZE sizeof (tcbhead_t)
+
+/* This is the size we need before TCB.  */
+#  define TLS_PRE_TCB_SIZE sizeof (struct _pthread_descr_struct)
 
 /* Alignment requirements for the TCB.  */
-# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
+#  define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
 
 /* The TLS blocks start right after the TCB.  */
-# define TLS_DTV_AT_TP	1
+#  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) \
+#  define INSTALL_DTV(tcbp, dtvp) \
-  ((tcbhead_t *) (descr))->dtv = dtvp + 1
+  ((tcbhead_t *) (tcbp))->dtv = dtvp + 1
 
 /* Install new dtv for current thread.  */
-# define INSTALL_NEW_DTV(dtv) \
+#  define INSTALL_NEW_DTV(dtv) \
-  ({ struct _pthread_descr_struct *__descr;				      \
+  ({ tcbhead_t *__tcbp;							      \
-     THREAD_SETMEM (__descr, p_header.data.dtvp, (dtv)); })
+     __asm __volatile ("stc gbr,%0" : "=r" (__tcbp));			      \
+     __tcbp->dtv = (dtv);})
 
 /* Return dtv of given thread descriptor.  */
-# define GET_DTV(descr) \
+#  define GET_DTV(tcbp) \
-  (((tcbhead_t *) (descr))->dtv)
+  (((tcbhead_t *) (tcbp))->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, secondcall) \
+#  define TLS_INIT_TP(tcbp, secondcall) \
-  ({									      \
+  ({ __asm __volatile ("ldc %0,gbr" : : "r" (tcbp)); 0; })
-    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));				      \
-									      \
-    0;									      \
-  })
-
-/* Indicate that dynamic linker shouldn't try to initialize TLS even
-   when no PT_TLS segments are found in the program and libraries
-   it is linked against.  */
-#  define TLS_INIT_TP_EXPENSIVE 1
 
 /* Return the address of the dtv for the current thread.  */
-# define THREAD_DTV() \
+#  define THREAD_DTV() \
-  ({ struct _pthread_descr_struct *__descr;				      \
+  ({ tcbhead_t *__tcbp;							      \
-     THREAD_GETMEM (__descr, p_header.data.dtvp); })
+     __asm __volatile ("stc gbr,%0" : "=r" (__tcbp));			      \
+     __tcbp->dtv;})
 
-# endif	/* HAVE_TLS_SUPPORT && (FLOATING_STACKS || !IS_IN_libpthread) */
+/* Return the thread descriptor for the current thread.  */
-#endif /* __ASSEMBLER__ */
+#  undef THREAD_SELF
+#  define THREAD_SELF \
+  ({ struct _pthread_descr_struct *__self;				      \
+     __asm ("stc gbr,%0" : "=r" (__self));				      \
+     __self - 1;})
+
+#  undef INIT_THREAD_SELF
+#  define INIT_THREAD_SELF(descr, nr) \
+  ({ struct _pthread_descr_struct *__self = (void *) descr;		      \
+     __asm __volatile ("ldc %0,gbr" : : "r" (__self + 1));		      \
+     0; })
+
+/* Get the thread descriptor definition.  This must be after the
+   the definition of THREAD_SELF for TLS.  */
+#  include <linuxthreads/descr.h>
+
+# endif /* __ASSEMBLER__ */
+
+#else
+
+# ifndef __ASSEMBLER__
+
+typedef struct
+{
+  void *tcb;
+  dtv_t *dtv;
+  void *self;
+  int multiple_threads;
+} tcbhead_t;
+
+/* Get the thread descriptor definition.  */
+#  include <linuxthreads/descr.h>
+
+#  define NONTLS_INIT_TP \
+  do { 									\
+    static const tcbhead_t nontls_init_tp = { .multiple_threads = 0 };	\
+    __asm __volatile ("ldc %0,gbr" : : "r" (&nontls_init_tp));	        \
+  } while (0)
+
+# endif /* __ASSEMBLER__ */
+
+#endif	/* HAVE_TLS_SUPPORT && (FLOATING_STACKS || !IS_IN_libpthread) */
 
 #endif	/* tls.h */

linuxthreads/sysdeps/unix/sysv/linux/sh/pt-initfini.c

@@ -1,5 +1,5 @@
 /* Special .init and .fini section support for SH. Linuxthread version.
-   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it
@@ -77,12 +77,6 @@ _init:\n\
 	.long	__gmon_start__@PLT\n\
 .L24:\n\
 	.long	__pthread_initialize_minimal@PLT\n\
-	.data\n\
-	.global __fpscr_values\n\
-__fpscr_values:\n\
-	.long   0\n\
-	.long   0x80000\n\
-	.previous\n\
 1:\n\
 	ALIGN\n\
 	END_INIT\n\

linuxthreads/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h

@@ -52,6 +52,7 @@
     add _IMP16,r15; \
     lds.l @r15+,pr; \
     DO_CALL(syscall_name, args); \
+    SYSCALL_INST_PAD; \
     sts.l pr,@-r15; \
     mov.l r0,@-r15; \
     CDISABLE; \
@@ -106,6 +107,7 @@
 	.align 2; \
      1: .long __local_enable_asynccancel - 0b; \
      2:
+
 # define CDISABLE \
 	mov.l 1f,r0; \
 	bsrf r0; \
@@ -129,6 +131,7 @@ extern int __local_multiple_threads attribute_hidden;
 #  if !defined PIC
 #   define SINGLE_THREAD_P \
 	mov.l 1f,r0; \
+	mov.l @r0,r0; \
 	bra 2f; \
 	 tst r0,r0; \
 	.align 2; \
@@ -136,7 +139,15 @@ extern int __local_multiple_threads attribute_hidden;
      2:
 #  elif defined FLOATING_STACKS && USE___THREAD
 #   define SINGLE_THREAD_P \
-	mov.l @(MULTIPLE_THREADS_OFFSET,gbr),r0; tst r0,r0
+	stc gbr,r0; \
+	mov.w 0f,r1; \
+	sub r1,r0; \
+	mov.l @(MULTIPLE_THREADS_OFFSET,r0),r0; \
+	bra 1f; \
+	 tst r0,r0; \
+     0: .word TLS_PRE_TCB_SIZE; \
+     1:
+
 #  else
 #   define SINGLE_THREAD_P \
 	mov r12,r2; \

linuxthreads/sysdeps/unix/sysv/linux/sh/vfork.S

@@ -26,8 +26,14 @@
    and the process ID of the new process to the old process.  */
 
 ENTRY (__vfork)
-	SINGLE_THREAD_P
+#ifdef SHARED
-	bf .Lhidden_fork
+	mov.l	.Lpthread_func, r0
+	mov.l	@(r0,r12), r0
+#else
+	mov.l	.Lpthread_fork, r0
+#endif
+	tst	r0, r0
+	bf	.Lhidden_fork
 
 	mov.w	.L1, r3
 	trapa	#0x10
@@ -42,6 +48,14 @@ ENTRY (__vfork)
 	rts
 	 nop
 .L1:	.word	__NR_vfork
+	.align	2
+#ifdef SHARED
+.Lpthread_func:
+	.long	__libc_pthread_functions@GOTOFF
+#else
+.Lpthread_fork:
+	.long	__pthread_fork
+#endif
 
 .Lhidden_fork:	
 	mov.l	.L2, r1