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Re: new syscall stub support for ia64 libc


>>>>> On Wed, 10 Dec 2003 15:05:03 -0800, Ulrich Drepper <drepper@redhat.com> said:

  Ulrich> I've applied this patch now.

Yippee!

  Ulrich> I made some changes, though.  Obviously the initfini code.
  Ulrich> Please look through all three files and send a patch with
  Ulrich> the remaining changes.

Attached is a patch for the (slightly updated) left-overs.

Thanks,

	--david

nptl/ChangeLog

2003-12-10  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/unix/sysv/linux/ia64/pt-initfini.c (_init_EPILOG_BEGINS):
	Add unwind directives.  Drop unused .regstk directive.
	(_fini_EPILOG_BEGINS): Add unwind directives.

linuxthreads/ChangeLog

2003-12-10  David Mosberger  <davidm@hpl.hp.com>

	* sysdeps/unix/sysv/linux/ia64/pt-initfini.c: Update copyright
	message.  Add include of <stddef.h>.
	(INIT_NEW_WAY): New macro.
	(INIT_OLD_WAY): Likewise.
	(_init): Add unwind directives.  Invoke
	__pthread_initialize_minimal() via INIT_NEW_WAY or INIT_OLD_WAY,
	respectively.
	(_init_EPILOG_BEGINS): Add unwind-directives.  Drop unused .regstk
	directive.
	(_fini): Add unwind directives.  Drop unnecessary .align 16
	directive (bundles are always 16-byte aligned).
	(_fini_EPILOG_BEGINS): Add unwind-directives.

Index: linuxthreads/sysdeps/unix/sysv/linux/ia64/pt-initfini.c
--- linuxthreads/sysdeps/unix/sysv/linux/ia64/pt-initfini.c
+++ linuxthreads/sysdeps/unix/sysv/linux/ia64/pt-initfini.c
@@ -1,5 +1,5 @@
 /* Special .init and .fini section support for ia64. LinuxThreads version.
-   Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2002, 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
@@ -36,40 +36,62 @@
    * crtn.s puts the corresponding function epilogues
    in the .init and .fini sections. */
 
+#include <stddef.h>
+
+#ifdef HAVE_INITFINI_ARRAY
+
+# define INIT_NEW_WAY \
+    ".xdata8 \".init_array\", @fptr(__pthread_initialize_minimal)\n"
+# define INIT_OLD_WAY ""
+#else
+# define INIT_NEW_WAY ""
+# define INIT_OLD_WAY \
+	"\n\
+	st8 [r12] = gp, -16\n\
+	br.call.sptk.many b0 = __pthread_initialize_minimal# ;;\n\
+	;;\n\
+	adds r12 = 16, r12\n\
+	;;\n\
+	ld8 gp = [r12]\n\
+	;;\n"
+#endif
+
 __asm__ ("\n\
 \n\
 #include \"defs.h\"\n\
 \n\
 /*@HEADER_ENDS*/\n\
 \n\
-/*@_init_PROLOG_BEGINS*/\n\
-	.section .init\n\
+/*@_init_PROLOG_BEGINS*/\n"
+	INIT_NEW_WAY
+	".section .init\n\
 	.align 16\n\
 	.global _init#\n\
 	.proc _init#\n\
 _init:\n\
+	.prologue\n\
+	.save ar.pfs, r34\n\
 	alloc r34 = ar.pfs, 0, 3, 0, 0\n\
+	.vframe r32\n\
 	mov r32 = r12\n\
+	.save rp, r33\n\
 	mov r33 = b0\n\
+	.body\n\
 	adds r12 = -16, r12\n\
-	;;\n\
-/* we could use r35 to save gp, but we use the stack since that's what\n\
- * all the other init routines will do --davidm 00/04/05 */\n\
-	st8 [r12] = gp, -16\n\
-	br.call.sptk.many b0 = __pthread_initialize_minimal# ;;\n\
-	;;\n\
-	adds r12 = 16, r12\n\
-	;;\n\
-	ld8 gp = [r12]\n\
-	;;\n\
-	.align 16\n\
-	.endp _init#\n\
+	;;\n"
+	INIT_OLD_WAY
+	".endp _init#\n\
 \n\
 /*@_init_PROLOG_ENDS*/\n\
 \n\
 /*@_init_EPILOG_BEGINS*/\n\
 	.section .init\n\
-	.regstk 0,2,0,0\n\
+	.proc _init#\n\
+	.prologue\n\
+	.save ar.pfs, r34\n\
+	.vframe r32\n\
+	.save rp, r33\n\
+	.body\n\
 	mov r12 = r32\n\
 	mov ar.pfs = r34\n\
 	mov b0 = r33\n\
@@ -83,18 +105,28 @@
 	.global _fini#\n\
 	.proc _fini#\n\
 _fini:\n\
+	.prologue\n\
+	.save ar.pfs, r34\n\
 	alloc r34 = ar.pfs, 0, 3, 0, 0\n\
+	.vframe r32\n\
 	mov r32 = r12\n\
+	.save rp, r33\n\
 	mov r33 = b0\n\
+	.body\n\
 	adds r12 = -16, r12\n\
 	;;\n\
-	.align 16\n\
 	.endp _fini#\n\
 \n\
 /*@_fini_PROLOG_ENDS*/\n\
 \n\
 /*@_fini_EPILOG_BEGINS*/\n\
 	.section .fini\n\
+	.proc _fini#\n\
+	.prologue\n\
+	.save ar.pfs, r34\n\
+	.vframe r32\n\
+	.save rp, r33\n\
+	.body\n\
 	mov r12 = r32\n\
 	mov ar.pfs = r34\n\
 	mov b0 = r33\n\
Index: nptl/sysdeps/unix/sysv/linux/ia64/pt-initfini.c
--- nptl/sysdeps/unix/sysv/linux/ia64/pt-initfini.c
+++ nptl/sysdeps/unix/sysv/linux/ia64/pt-initfini.c
@@ -87,7 +87,12 @@
 \n\
 /*@_init_EPILOG_BEGINS*/\n\
 	.section .init\n\
-	.regstk 0,2,0,0\n\
+	.proc _init#\n\
+	.prologue\n\
+	.save ar.pfs, r34\n\
+	.vframe r32\n\
+	.save rp, r33\n\
+	.body\n\
 	mov r12 = r32\n\
 	mov ar.pfs = r34\n\
 	mov b0 = r33\n\
@@ -117,6 +122,12 @@
 \n\
 /*@_fini_EPILOG_BEGINS*/\n\
 	.section .fini\n\
+	.proc _fini#\n\
+	.prologue\n\
+	.save ar.pfs, r34\n\
+	.vframe r32\n\
+	.save rp, r33\n\
+	.body\n\
 	mov r12 = r32\n\
 	mov ar.pfs = r34\n\
 	mov b0 = r33\n\


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