Merge branch 'libpthread' into libpthread-moved

2 files changed, 41 insertions, 9 deletions

diff --git a/libpthread/sysdeps/mach/hurd/ia32/pt-machdep.c b/libpthread/sysdeps/mach/hurd/ia32/pt-machdep.c
index face46c5..f3c8cf50 100644
--- a/libpthread/sysdeps/mach/hurd/ia32/pt-machdep.c
+++ b/libpthread/sysdeps/mach/hurd/ia32/pt-machdep.c
@@ -1,5 +1,5 @@
 /* Machine dependent pthreads code.  Hurd/i386 version.
-   Copyright (C) 2000,02 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002, 2007 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -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 @@ __thread_set_pcsp (thread_t thread,
 
   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 +59,21 @@ __thread_set_pcsp (thread_t thread,
     state.uesp = (unsigned int) sp;
   if (set_ip)
     state.eip = (unsigned int) ip;
+  if (set_tp) {
+    HURD_TLS_DESC_DECL(desc, tp);
+    int sel;
+
+    asm ("mov %%gs, %w0" : "=q" (sel) : "0" (0));
+    if (__builtin_expect (sel, 0x48) & 4) /* LDT selector */
+      err = __i386_set_ldt (thread, sel, &desc, 1);
+    else
+      err = __i386_set_gdt (thread, &sel, desc);
+    if (err)
+      return err;
+    state.gs = 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)
diff --git a/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c b/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c
index ba438d6a..5420dc8e 100644
--- a/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c
+++ b/libpthread/sysdeps/mach/hurd/ia32/pt-setup.c
@@ -1,5 +1,5 @@
 /* Setup thread stack.  Hurd/i386 version.
-   Copyright (C) 2000, 2002, 2005, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2002, 2005, 2007, 2008 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -64,7 +64,7 @@ stack_setup (struct __pthread *thread,
     {
       /* And then the call frame.  */
       top -= 2;
-      top = (uintptr_t) top & ~0xf;
+      top = (uintptr_t *) ((uintptr_t) top & ~0xf);
       top[1] = (uintptr_t) arg;	/* Argument to START_ROUTINE.  */
       top[0] = (uintptr_t) start_routine;
       *--top = 0;		/* Fake return address.  */
@@ -91,12 +91,15 @@ __pthread_setup (struct __pthread *thread,
   thread->mcontext.pc = entry_point;
   thread->mcontext.sp = stack_setup (thread, start_routine, arg);
 
+  thread->tcb->self = thread->kernel_thread;
+
   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);