Update.

2003-01-17  Richard Henderson  <rth@redhat.com>

	* sysdeps/alpha/dl-machine.h (elf_machine_type_class): Add TLS
	relocs for class PLT.
	* sysdeps/alpha/libc-tls.c: New file.
	* sysdeps/unix/alpha/sysdep.S (EPILOGUE, GPSAVEREG): New.
	(LOADGP) [!PIC]: Rewrite to preserve caller's gp.

2003-01-17  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/ia64/dl-static.c (_dl_static_init): Use
	__libc_lock_{,un}lock_recursive instead of __libc_lock_{,un}lock
	on _dl_static_lock.

3 files changed, 89 insertions, 11 deletions

diff --git a/sysdeps/alpha/dl-machine.h b/sysdeps/alpha/dl-machine.h
index 5016f13..25359d8 100644
--- a/sysdeps/alpha/dl-machine.h
+++ b/sysdeps/alpha/dl-machine.h
@@ -387,13 +387,24 @@ $fixup_stack:							\n\
 #define RTLD_START_SPECIAL_INIT /* nothing */
 #endif
 
-/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
-   PLT entries should not be allowed to define the value.
-   ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
-   of the main executable's symbols, as for a COPY reloc, which we don't
-   use.  */
+/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry
+   or TLS variables, so undefined references should not be allowed
+   to define the value.
+
+   ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve
+   to one of the main executable's symbols, as for a COPY reloc.
+   This is unused on Alpha.  */
+
+#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD)
+#define elf_machine_type_class(type)	\
+  (((type) == R_ALPHA_JMP_SLOT		\
+    || (type) == R_ALPHA_DTPMOD64	\
+    || (type) == R_ALPHA_DTPREL64	\
+    || (type) == R_ALPHA_TPREL64) * ELF_RTYPE_CLASS_PLT)
+#else
 #define elf_machine_type_class(type)	\
   (((type) == R_ALPHA_JMP_SLOT) * ELF_RTYPE_CLASS_PLT)
+#endif
 
 /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
 #define ELF_MACHINE_JMP_SLOT	 R_ALPHA_JMP_SLOT
diff --git a/sysdeps/alpha/libc-tls.c b/sysdeps/alpha/libc-tls.c
new file mode 100644
index 0000000..434d5d9
--- /dev/null
+++ b/sysdeps/alpha/libc-tls.c
@@ -0,0 +1,37 @@
+/* Thread-local storage handling in the ELF dynamic linker.  Alpha version.
+   Copyright (C) 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 and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdeps/generic/libc-tls.c>
+#include <dl-tls.h>
+
+#if USE_TLS
+
+/* On Alpha, linker optimizations are not required, so __tls_get_addr
+   can be called even in statically linked binaries.  In this case module
+   must be always 1 and PT_TLS segment exist in the binary, otherwise it
+   would not link.  */
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+  dtv_t *dtv = THREAD_DTV ();
+  return (char *) dtv[1].pointer + ti->ti_offset;
+}
+
+#endif
diff --git a/sysdeps/unix/alpha/sysdep.S b/sysdeps/unix/alpha/sysdep.S
index c31508b..ce848f4 100644
--- a/sysdeps/unix/alpha/sysdep.S
+++ b/sysdeps/unix/alpha/sysdep.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1996, 1998, 2002 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1996, 1998, 2002, 2003 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Brendan Kehoe (brendan@zen.org).
 
@@ -35,9 +35,26 @@
 	   have we loaded PV with our address.  Do both.  */
 # define LOADGP		br pv, 1f; 1: ldgp gp, 0(pv)
 # define PROLOGUE	.prologue 0
+# define EPILOGUE
 #else
-# define LOADGP		ldgp gp, 0(pv)
+	/* When building the static library, we tail call here from
+	   elsewhere, which might use a different GP.  The entertaining
+	   part is that we have to return with the GP of our caller
+	   in place, so that linker relaxation works properly.  */
+	/* ??? This is so ugly.  Consider always putting the errno
+	   setting code with the syscall in the static case.  */
+# define GPSAVEREG	t10
+# define LOADGP		ldah	t11, 0(pv) !gpdisp!1;		\
+			br	1f;				\
+			.subsection 2;				\
+			1: mov	gp, GPSAVEREG;			\
+			lda	gp, 0(t11) !gpdisp!1;		\
+			br	2f;				\
+			.previous;				\
+			mov	gp, GPSAVEREG;			\
+			2:
 # define PROLOGUE	.prologue 1
+# define EPILOGUE	mov	GPSAVEREG, gp
 #endif
 
 	.align 4
@@ -61,16 +78,20 @@ __syscall_error:
 	addq	v0, t1, v0
 	stl	t0, 0(v0)
 	lda	v0, -1
+	EPILOGUE
 	ret
 
 #elif defined(_LIBC_REENTRANT)
 
 	LOADGP
-	lda	sp, -16(sp)
-	.frame	sp, 16, ra, 0
+	lda	sp, -32(sp)
+	.frame	sp, 32, ra, 0
 	stq	ra, 0(sp)
 	stq	v0, 8(sp)
-	.mask	0x4000001, -16
+#ifdef GPSAVEREG
+	stq	GPSAVEREG, 16(sp)
+#endif
+	.mask	0x4000001, -32
 	PROLOGUE
 
 	/* Find our per-thread errno address  */
@@ -78,6 +99,9 @@ __syscall_error:
 	bsr	ra, __errno_location	!samegp
 #else
 	jsr	ra, __errno_location
+#ifndef GPSAVEREG
+	ldgp	gp, 0(ra)
+#endif
 #endif
 
 	/* Store the error value.  */
@@ -87,8 +111,12 @@ __syscall_error:
 	/* And kick back a -1.  */
 	ldi	v0, -1
 
+#ifdef GPSAVEREG
+	ldq	GPSAVEREG, 16(sp)
+#endif
 	ldq	ra, 0(sp)
-	lda	sp, 16(sp)
+	lda	sp, 32(sp)
+	EPILOGUE
 	ret
 
 #else
@@ -97,8 +125,10 @@ __syscall_error:
 	PROLOGUE
 	stl	v0, errno
 	lda	v0, -1
+	EPILOGUE
 	ret
 
 #endif
 
+	.subsection 3
 	.end __syscall_error