remove linuxthreads.new, rename linuxthreads.old

Linuxthreads.new isn't really useful with the existence
of NPTL/TLS for well supported architectures. There is no
reason to use LT.new for ARM/MIPS or other architectures
supporting NPTL/TLS. It is not available for noMMU architectures
like Blackfin or FR-V. To simplify the live of the few uClibc-ng
developers, LT.new is removed and LT.old is renamed to LT.
LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS

1 files changed, 49 insertions, 91 deletions

diff --git a/libpthread/linuxthreads/sysdeps/sh/tls.h b/libpthread/linuxthreads/sysdeps/sh/tls.h
index 512e3181e..25bef830f 100644
--- a/libpthread/linuxthreads/sysdeps/sh/tls.h
+++ b/libpthread/linuxthreads/sysdeps/sh/tls.h
@@ -30,129 +30,87 @@
 typedef union dtv
 {
   size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
+  void *pointer;
 } dtv_t;
 
-#else /* __ASSEMBLER__ */
-# include <tcb-offsets.h>
-#endif /* __ASSEMBLER__ */
+
+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.  */
+} tcbhead_t;
 
 
 /* We can support TLS only if the floating-stack support is available.  */
-#if defined HAVE_TLS_SUPPORT \
-    && (defined FLOATING_STACKS || !defined IS_IN_libpthread)
+#if defined FLOATING_STACKS && defined HAVE_TLS_SUPPORT
 
-/* Signal that TLS support is available.  */
-# define USE_TLS	1
+/* Get system call information.  */
+# include <sysdep.h>
 
-/* Include padding in _pthread_descr_struct so that libc can find p_errno,
-   if libpthread will only include the padding because of the !IS_IN_libpthread
-   check.  */
-#ifndef FLOATING_STACKS
-# define INCLUDE_TLS_PADDING	1
-#endif
+/* Signal that TLS support is available.  */
+//# define USE_TLS	1
 
-# ifndef __ASSEMBLER__
 
-typedef struct
-{
-  dtv_t *dtv;
-  void *private;
-} tcbhead_t;
+/* Get the thread descriptor definition.  */
+# include <linuxthreads/descr.h>
 
 /* 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 (tcbhead_t)
-
-/* This is the size we need before TCB.  */
-#  define TLS_PRE_TCB_SIZE sizeof (struct _pthread_descr_struct)
+# define TLS_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(tcbp, dtvp) \
-  ((tcbhead_t *) (tcbp))->dtv = dtvp + 1
+# define INSTALL_DTV(descr, dtvp) \
+  ((tcbhead_t *) (descr))->dtv = dtvp + 1
 
 /* Install new dtv for current thread.  */
-#  define INSTALL_NEW_DTV(dtv) \
-  ({ tcbhead_t *__tcbp;							      \
-     __asm__ __volatile__ ("stc gbr,%0" : "=r" (__tcbp));			      \
-     __tcbp->dtv = (dtv);})
+# define INSTALL_NEW_DTV(dtv) \
+  ({ struct _pthread_descr_struct *__descr;				      \
+     THREAD_SETMEM (__descr, p_header.data.dtvp, (dtv)); })
 
 /* Return dtv of given thread descriptor.  */
-#  define GET_DTV(tcbp) \
-  (((tcbhead_t *) (tcbp))->dtv)
+# define GET_DTV(descr) \
+  (((tcbhead_t *) (descr))->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) \
-  ({ __asm__ __volatile__ ("ldc %0,gbr" : : "r" (tcbp)); 0; })
-
-/* Return the address of the dtv for the current thread.  */
-#  define THREAD_DTV() \
-  ({ tcbhead_t *__tcbp;							      \
-     __asm__ __volatile__ ("stc gbr,%0" : "=r" (__tcbp));			      \
-     __tcbp->dtv;})
+# define TLS_INIT_TP(descr, secondcall) \
+  ({									      \
+    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;									      \
+  })
 
-/* Return the thread descriptor for the current thread.  */
-#  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; })
-
-# define TLS_MULTIPLE_THREADS_IN_TCB 1
-
-/* 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__ */
+/* Return the address of the dtv for the current thread.  */
+# define THREAD_DTV() \
+  ({ struct _pthread_descr_struct *__descr;				      \
+     THREAD_GETMEM (__descr, p_header.data.dtvp); })
 
-#endif	/* HAVE_TLS_SUPPORT && (FLOATING_STACKS || !IS_IN_libpthread) */
+#endif	/* FLOATING_STACKS && HAVE_TLS_SUPPORT */
+#endif /* __ASSEMBLER__ */
 
 #endif	/* tls.h */