[src/trunk]: src Add code code for .init and .fini section fallthroughs and r...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9fa7c5fe3b71
branches:  trunk
changeset: 566732:9fa7c5fe3b71
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue May 18 19:19:34 2004 +0000

description:
Add code code for .init and .fini section fallthroughs and regression
test.

diffstat:

 lib/csu/hppa/dot_init.h                           |  81 +++++++++++++++++++++++
 regress/lib/csu/initfini/arch/hppa/initfini_asm.S |  22 ++++++
 2 files changed, 103 insertions(+), 0 deletions(-)

diffs (111 lines):

diff -r 07536130d207 -r 9fa7c5fe3b71 lib/csu/hppa/dot_init.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/csu/hppa/dot_init.h   Tue May 18 19:19:34 2004 +0000
@@ -0,0 +1,81 @@
+/* $NetBSD: dot_init.h,v 1.1 2004/05/18 19:19:34 skrll Exp $ */
+
+/*-
+ * Copyright (c) 2004 Nick Hudson
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the NetBSD
+ *     Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>                 /* RCS ID & Copyright macro defns */
+#include <machine/asm.h>
+
+/*
+ * These must be extern to avoid warnings ("declared static but never defined")
+ * However, only the declaration is extern, the actually __asm() defines them
+ * as static.
+ */
+#define        INIT_FALLTHRU_DECL void init_fallthru(void)
+#define        FINI_FALLTHRU_DECL void fini_fallthru(void)
+
+#define        INIT_FALLTHRU() init_fallthru()
+#define        FINI_FALLTHRU() fini_fallthru()
+
+#define        MD_SECTION_PROLOGUE(sect, entry_pt)             \
+               __asm (                                 \
+               ".section "#sect",\"ax\",@progbits      \n"\
+               ".proc                                  \n"\
+               ".callinfo frame=64,calls,save_rp,save_sp, entry_gr=4\n"\
+               ".entry                                 \n"\
+               #entry_pt":                             \n"\
+               "       stw     %rp, -20(%sp)           \n"\
+               "       copy    %r3, %r1                \n"\
+               "       copy    %sp, %r3                \n"\
+               "       stw,ma  %r1, 64(%sp)            \n"\
+               "       stw     %r4, 8(%r3)             \n"\
+               "       /* fall thru */                 \n"\
+               ".previous                              \n"\
+               ".exit                                  \n"\
+               ".procend")
+
+#define        MD_SECTION_EPILOGUE(sect)                       \
+               __asm (                                 \
+               ".section "#sect",\"ax\",@progbits      \n"\
+               "       ldw     -20(%r3) ,%rp           \n"\
+               "       ldw     8(%r3), %r4             \n"\
+               "       ldo     64(%r3), %sp            \n"\
+               "       ldw,mb  -64(%sp), %r3           \n"\
+               "       bv,n    %r0(%rp)                \n"\
+               ".previous")
+
+#define        MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, init_fallthru)
+#define        MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, fini_fallthru)
+
+#define        MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init)
+#define        MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini)
diff -r 07536130d207 -r 9fa7c5fe3b71 regress/lib/csu/initfini/arch/hppa/initfini_asm.S
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/lib/csu/initfini/arch/hppa/initfini_asm.S Tue May 18 19:19:34 2004 +0000
@@ -0,0 +1,22 @@
+/*     $NetBSD: initfini_asm.S,v 1.1 2004/05/18 19:19:34 skrll Exp $   */
+
+/*
+ * This file placed in the public domain.
+ * Nick Hudson, May 18, 2004.
+ */
+
+#include <machine/asm.h>
+
+       .section .init, "ax", @progbits
+       copy    %r19, %r4
+       bl      i_am_init, %rp
+       nop
+       copy    %r4, %r19
+       .previous
+
+       .section .fini, "ax", @progbits
+       copy    %r19, %r4
+       bl      i_am_fini, %rp
+       nop
+       copy    %r4, %r19
+       .previous