* sysdeps/ia64/elf/initfini.c [HAVE_INITFINI_ARRAY]

	(gmon_initializer): New function.
	(.init prologue): If HAVE_INITFINI_ARRAY is true, don't call
	__gmon_start__ here.  Call it from gmon_initializer() instead.

2002-03-12  H.J. Lu  <hjl@gnu.org>

	* elf/Makefile [$(have-initfini-array) = yes] (tests): Add tst-array1,
	tst-array2, and tst-array3.
	[$(have-initfini-array) = yes] (tests-static): Add tst-array3.
	[$(have-initfini-array) = yes] (modules-names): Add tst-array2dep.
	($(objpfx)tst-array1.out): New target.
	($(objpfx)tst-array2): Likewise.
	($(objpfx)tst-array2.out): Likewise.
	($(objpfx)tst-array3.out): Likewise.
	* elf/tst-array1.c: New file.
	* elf/tst-array1.exp: Likewise.
	* elf/tst-array2.c: Likewise.
	* elf/tst-array2dep.c: Likewise.
	* elf/tst-array2.exp: Likewise.
	* elf/tst-array3.c: Likewise.

1 files changed, 107 insertions, 78 deletions

diff --git a/sysdeps/ia64/elf/initfini.c b/sysdeps/ia64/elf/initfini.c
index 2e3234a..5315abf 100644
--- a/sysdeps/ia64/elf/initfini.c
+++ b/sysdeps/ia64/elf/initfini.c
@@ -27,81 +27,110 @@
    * crtn.s puts the corresponding function epilogues
    in the .init and .fini sections. */
 
-__asm__ ("\n\
-\n\
-#include \"defs.h\"\n\
-\n\
-/*@HEADER_ENDS*/\n\
-\n\
-/*@_init_PROLOG_BEGINS*/\n\
-	.section .init\n\
-	.align 16\n\
-	.global _init#\n\
-	.proc _init#\n\
-_init:\n\
-	alloc r34 = ar.pfs, 0, 3, 0, 0\n\
-	mov r32 = r12\n\
-	mov r33 = b0\n\
-	adds r12 = -16, r12\n\
-	addl r14 = @ltoff(@fptr(__gmon_start__#)), gp\n\
-	;;\n\
-	ld8 r15 = [r14]\n\
-	;;\n\
-	cmp.eq p6, p7 = 0, r15\n\
-	(p6) br.cond.dptk .L5\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 = __gmon_start__# ;;\n\
-	adds r12 = 16, r12\n\
-	;;\n\
-	ld8 gp = [r12]\n\
-	;;\n\
-.L5:\n\
-	.align 16\n\
-	.endp _init#\n\
-\n\
-/*@_init_PROLOG_ENDS*/\n\
-\n\
-/*@_init_EPILOG_BEGINS*/\n\
-	.section .init\n\
-	.regstk 0,2,0,0\n\
-	mov r12 = r32\n\
-	mov ar.pfs = r34\n\
-	mov b0 = r33\n\
-	br.ret.sptk.many b0\n\
-	.endp _init#\n\
-/*@_init_EPILOG_ENDS*/\n\
-\n\
-/*@_fini_PROLOG_BEGINS*/\n\
-	.section .fini\n\
-	.align 16\n\
-	.global _fini#\n\
-	.proc _fini#\n\
-_fini:\n\
-	alloc r34 = ar.pfs, 0, 3, 0, 0\n\
-	mov r32 = r12\n\
-	mov r33 = b0\n\
-	adds r12 = -16, r12\n\
-	;;\n\
-	.align 16\n\
-	.endp _fini#\n\
-\n\
-/*@_fini_PROLOG_ENDS*/\n\
-	br.call.sptk.many b0 = i_am_not_a_leaf# ;;\n\
-	;;\n\
-\n\
-/*@_fini_EPILOG_BEGINS*/\n\
-	.section .fini\n\
-	mov r12 = r32\n\
-	mov ar.pfs = r34\n\
-	mov b0 = r33\n\
-	br.ret.sptk.many b0\n\
-	.endp _fini#\n\
-\n\
-/*@_fini_EPILOG_ENDS*/\n\
-\n\
-/*@TRAILER_BEGINS*/\n\
-	.weak	__gmon_start__#\n\
-");
+__asm__ ("\n\n"
+"#include \"defs.h\"\n"
+"\n"
+"/*@HEADER_ENDS*/\n"
+"\n"
+"/*@_init_PROLOG_BEGINS*/\n");
+
+#ifdef HAVE_INITFINI_ARRAY
+
+/* If we have working .init_array support, we want to keep the .init
+   section empty (apart from the mandatory prologue/epilogue.  This
+   ensures that the default unwind conventions (return-pointer in b0,
+   frame state in ar.pfs, etc.)  will do the Right Thing.  To ensure
+   an empty .init section, we register gmon_initializer() via the
+   .init_array.
+
+	--davidm 02/10/29 */
+
+static void
+gmon_initializer (void)
+{
+  extern void weak_function __gmon_start__ (void);
+
+  if (__gmon_start__)
+    (*__gmon_start__)();
+}
+
+__asm__ (".section .init_array, \"aw\"\n"
+	 "\tdata8 @fptr(gmon_initializer)\n");
+
+#endif
+
+__asm__ (".section .init\n"
+"	.align 16\n"
+"	.global _init#\n"
+"	.proc _init#\n"
+"_init:\n"
+"	alloc r34 = ar.pfs, 0, 3, 0, 0\n"
+"	mov r32 = r12\n"
+"	mov r33 = b0\n"
+"	adds r12 = -16, r12\n"
+#ifdef HAVE_INITFINI_ARRAY
+ "	;;\n"		/* see gmon_initializer() below */
+#else
+"	.weak	__gmon_start__#\n"
+"	addl r14 = @ltoff(@fptr(__gmon_start__#)), gp\n"
+"	;;\n"
+"	ld8 r15 = [r14]\n"
+"	;;\n"
+"	cmp.eq p6, p7 = 0, r15\n"
+"	(p6) br.cond.dptk .L5\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 = __gmon_start__# ;;\n"
+"	adds r12 = 16, r12\n"
+"	;;\n"
+"	ld8 gp = [r12]\n"
+"	;;\n"
+".L5:\n"
+#endif
+"	.align 16\n"
+"	.endp _init#\n"
+"\n"
+"/*@_init_PROLOG_ENDS*/\n"
+"\n"
+"/*@_init_EPILOG_BEGINS*/\n"
+"	.section .init\n"
+"	.regstk 0,2,0,0\n"
+"	mov r12 = r32\n"
+"	mov ar.pfs = r34\n"
+"	mov b0 = r33\n"
+"	br.ret.sptk.many b0\n"
+"	.endp _init#\n"
+"/*@_init_EPILOG_ENDS*/\n"
+"\n"
+"/*@_fini_PROLOG_BEGINS*/\n"
+"	.section .fini\n"
+"	.align 16\n"
+"	.global _fini#\n"
+"	.proc _fini#\n"
+"_fini:\n"
+"	alloc r34 = ar.pfs, 0, 3, 0, 0\n"
+"	mov r32 = r12\n"
+"	mov r33 = b0\n"
+"	adds r12 = -16, r12\n"
+"	;;\n"
+"	.align 16\n"
+"	.endp _fini#\n"
+"\n"
+"/*@_fini_PROLOG_ENDS*/\n"
+"	br.call.sptk.many b0 = i_am_not_a_leaf# ;;\n"
+"	;;\n"
+"\n"
+"/*@_fini_EPILOG_BEGINS*/\n"
+"	.section .fini\n"
+"	mov r12 = r32\n"
+"	mov ar.pfs = r34\n"
+"	mov b0 = r33\n"
+"	br.ret.sptk.many b0\n"
+"	.endp _fini#\n"
+"\n"
+"/*@_fini_EPILOG_ENDS*/\n"
+"\n"
+"/*@TRAILER_BEGINS*/\n"
+);