* debian/patches/libpthread_tls_transitional.patch: New patch,

  implements TLS for libpthread, by Samuel Thibault.

1 files changed, 217 insertions, 0 deletions

diff --git a/debian/patches/libpthread_tls_transitional.patch b/debian/patches/libpthread_tls_transitional.patch
new file mode 100644
index 00000000..9814d966
--- /dev/null
+++ b/debian/patches/libpthread_tls_transitional.patch
@@ -0,0 +1,217 @@
+Index: libpthread/pthread/pt-create.c
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/pthread/pt-create.c,v
+retrieving revision 1.4
+diff -u -p -r1.4 pt-create.c
+--- libpthread/pthread/pt-create.c	4 May 2005 16:04:06 -0000	1.4
++++ libpthread/pthread/pt-create.c	13 Jun 2007 03:42:13 -0000
+@@ -127,6 +127,15 @@
+   if (err)
+     goto failed_thread_alloc;
+ 
++  if (_dl_allocate_tls) {
++    pthread->tcb = _dl_allocate_tls (NULL);
++    *pthread->tcb = pthread->tcb;
++    if (!pthread->tcb)
++      goto failed_thread_tls_alloc;
++  } else {
++    pthread->tcb = NULL;
++  }
++
+   /* And initialize the rest of the machine context.  This may include
+      additional machine- and system-specific initializations that
+      prove convenient.  */
+@@ -192,6 +201,9 @@
+  failed_sigstate:
+   __pthread_sigstate_destroy (pthread);
+  failed_setup:
++  if (_dl_deallocate_tls && pthread->tcb)
++    _dl_deallocate_tls (pthread->tcb, 1);
++ failed_thread_tls_alloc:
+   __pthread_thread_dealloc (pthread);
+   __pthread_thread_halt (pthread, 0);
+  failed_thread_alloc:
+Index: libpthread/pthread/pt-exit.c
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/pthread/pt-exit.c,v
+retrieving revision 1.2
+--- libpthread/pthread/pt-exit.c	4 May 2005 16:04:06 -0000	1.2
++++ libpthread/pthread/pt-exit.c	13 Jun 2007 03:42:13 -0000
+@@ -70,6 +70,8 @@
+   if (self->cancel_state == PTHREAD_CANCEL_ENABLE && self->cancel_pending)
+     status = PTHREAD_CANCELED;
+ 
++  if (_dl_deallocate_tls && self->tcb)
++    _dl_deallocate_tls (self->tcb, 1);
+   __pthread_thread_dealloc (self);
+ 
+   switch (self->state)
+Index: libpthread/pthread/pt-internal.h
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/pthread/pt-internal.h,v
+retrieving revision 1.4
+--- libpthread/pthread/pt-internal.h	4 Mar 2007 00:05:21 -0000	1.4
++++ libpthread/pthread/pt-internal.h	13 Jun 2007 03:42:13 -0000
+@@ -85,6 +85,8 @@
+ 
+   PTHREAD_SYSDEP_MEMBERS
+ 
++  void **tcb;
++
+   struct __pthread *next, **prevp;
+ };
+ 
+@@ -272,4 +274,19 @@
+ /* Default condition attributes.  */
+ const struct __pthread_condattr __pthread_default_condattr;
+ 
++
++#ifdef __i386__
++#define libc_internal_function __attribute__ ((regparm (3), stdcall))
++#else
++#error oups
++#define libc_internal_function
++#endif
++/* Dynamic linker TLS allocation.  */
++#pragma weak _dl_allocate_tls
++extern void *_dl_allocate_tls(void *) libc_internal_function;
++
++/* Dynamic linker TLS deallocation.  */
++#pragma weak _dl_deallocate_tls
++extern void _dl_deallocate_tls(void *, int) libc_internal_function;
++
+ #endif /* pt-internal.h */
+Index: libpthread/sysdeps/mach/hurd/pt-docancel.c
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/sysdeps/mach/hurd/pt-docancel.c,v
+retrieving revision 1.2
+--- libpthread/sysdeps/mach/hurd/pt-docancel.c	18 Nov 2002 22:20:58 -0000	1.2
++++ libpthread/sysdeps/mach/hurd/pt-docancel.c	13 Jun 2007 03:42:13 -0000
+@@ -52,8 +52,8 @@
+       err = __thread_abort (p->kernel_thread);
+       assert_perror (err);
+ 
+-      err = __thread_set_pcsp (p->kernel_thread,
+-			       1, (void *) call_exit, 0, 0);
++      err = __thread_set_pcsptp (p->kernel_thread,
++			       1, (void *) call_exit, 0, 0, 0, 0);
+       assert_perror (err);
+ 
+       err = __thread_resume (p->kernel_thread);
+Index: libpthread/sysdeps/mach/hurd/pt-sysdep.h
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/sysdeps/mach/hurd/pt-sysdep.h,v
+retrieving revision 1.3
+--- libpthread/sysdeps/mach/hurd/pt-sysdep.h	18 Jan 2005 10:08:52 -0000	1.3
++++ libpthread/sysdeps/mach/hurd/pt-sysdep.h	13 Jun 2007 03:42:13 -0000
+@@ -59,11 +59,13 @@
+   __vm_deallocate (__mach_task_self (), (vm_offset_t) stackaddr, stacksize);
+ }
+ 
+-/* Change thread THREAD's program counter to PC if SET_PC is true and
+-   its stack pointer to SP if SET_IP is true.  */
+-extern int __thread_set_pcsp (thread_t thread,
++/* Change thread THREAD's program counter to PC if SET_PC is true,
++   its stack pointer to SP if SET_IP is true, and its thread pointer
++   to TP if SET_TP is true.  */
++extern int __thread_set_pcsptp (thread_t thread,
+ 			      int set_pc, void *pc,
+-			      int set_sp, void *sp);
++			      int set_sp, void *sp,
++			      int set_tp, void *tp);
+ 
+ 
+ #endif /* pt-sysdep.h */
+Index: libpthread/sysdeps/mach/hurd/i386/pt-machdep.c
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/sysdeps/mach/hurd/i386/pt-machdep.c,v
+retrieving revision 1.1
+--- libpthread/sysdeps/mach/hurd/i386/pt-machdep.c	10 Oct 2002 23:05:05 -0000	1.1
++++ libpthread/sysdeps/mach/hurd/i386/pt-machdep.c	13 Jun 2007 03:42:13 -0000
+@@ -21,12 +21,28 @@
+ 
+ #include <mach.h>
+ #include <mach/i386/thread_status.h>
++#include <mach/i386/mach_i386.h>
++#include <mach/mig_errors.h>
+ #include <mach/thread_status.h>
+ 
++#define HURD_TLS_DESC_DECL(desc, tcb)					      \
++  struct descriptor desc =						      \
++    {				/* low word: */				      \
++      0xffff			/* limit 0..15 */			      \
++      | (((unsigned int) (tcb)) << 16) /* base 0..15 */			      \
++      ,				/* high word: */			      \
++      ((((unsigned int) (tcb)) >> 16) & 0xff) /* base 16..23 */		      \
++      | ((0x12 | 0x60 | 0x80) << 8) /* access = ACC_DATA_W|ACC_PL_U|ACC_P */  \
++      | (0xf << 16)		/* limit 16..19 */			      \
++      | ((4 | 8) << 20)		/* granularity = SZ_32|SZ_G */		      \
++      | (((unsigned int) (tcb)) & 0xff000000) /* base 24..31 */		      \
++    }
++
+ int
+-__thread_set_pcsp (thread_t thread,
++__thread_set_pcsptp (thread_t thread,
+ 		   int set_ip, void *ip,
+-		   int set_sp, void *sp)
++		   int set_sp, void *sp,
++		   int set_tp, void *tp)
+ {
+   error_t err;
+   struct i386_thread_state state;
+@@ -34,7 +50,7 @@
+ 
+   state_count = i386_THREAD_STATE_COUNT;
+ 
+-  err = __thread_get_state (thread, i386_THREAD_STATE,
++  err = __thread_get_state (thread, i386_REGS_SEGS_STATE,
+ 			    (thread_state_t) &state, &state_count);
+   if (err)
+     return err;
+@@ -43,8 +59,26 @@
+     state.uesp = (unsigned int) sp;
+   if (set_ip)
+     state.eip = (unsigned int) ip;
++  if (set_tp) {
++    HURD_TLS_DESC_DECL(desc, tp);
++
++    /* Get the first available selector.  */
++    int sel = -1;
++    err = __i386_set_gdt (thread, &sel, desc);
++    if (err == MIG_BAD_ID)
++      {
++	/* Old kernel, use a per-thread LDT.  */
++	sel = 0x27;
++	err = __i386_set_ldt (thread, sel, &desc, 1);
++	if (err)
++	  return err;
++      }
++    else if (err)
++      return err;
++    state.gs = (unsigned int) sel;
++  }
+ 
+-  err = __thread_set_state (thread, i386_THREAD_STATE,
++  err = __thread_set_state (thread, i386_REGS_SEGS_STATE,
+ 			    (thread_state_t) &state,
+ 			    i386_THREAD_STATE_COUNT);
+   if (err)
+Index: libpthread/sysdeps/mach/hurd/i386/pt-setup.c
+===================================================================
+RCS file: /cvsroot/hurd/hurd/libpthread/sysdeps/mach/hurd/i386/pt-setup.c,v
+retrieving revision 1.4
+--- libpthread/sysdeps/mach/hurd/i386/pt-setup.c	12 May 2005 20:55:37 -0000	1.4
++++ libpthread/sysdeps/mach/hurd/i386/pt-setup.c	13 Jun 2007 03:42:13 -0000
+@@ -92,9 +92,10 @@
+   ktid = __mach_thread_self ();
+   if (thread->kernel_thread != ktid)
+     {
+-      err = __thread_set_pcsp (thread->kernel_thread,
++      err = __thread_set_pcsptp (thread->kernel_thread,
+ 			       1, thread->mcontext.pc,
+-			       1, thread->mcontext.sp);
++			       1, thread->mcontext.sp,
++			       1, thread->tcb);
+       assert_perror (err);
+     }
+   __mach_port_deallocate (__mach_task_self (), ktid);