[src/trunk]: src/lib/csu/sh5 Use an assembler trampoline to call the real sta...

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

details:   https://anonhg.NetBSD.org/src/rev/3f2087e161db
branches:  trunk
changeset: 533874:3f2087e161db
user:      scw <scw%NetBSD.org@localhost>
date:      Wed Jul 10 13:13:47 2002 +0000

description:
Use an assembler trampoline to call the real start entrypoint, at least
until we switch to the native toolchain.

diffstat:

 lib/csu/sh5/crt0.c     |  10 ++++++++--
 lib/csu/sh5/dot_init.h |   7 ++++++-
 2 files changed, 14 insertions(+), 3 deletions(-)

diffs (54 lines):

diff -r dde529e56040 -r 3f2087e161db lib/csu/sh5/crt0.c
--- a/lib/csu/sh5/crt0.c        Wed Jul 10 13:09:04 2002 +0000
+++ b/lib/csu/sh5/crt0.c        Wed Jul 10 13:13:47 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: crt0.c,v 1.1 2002/07/05 13:31:28 scw Exp $     */
+/*     $NetBSD: crt0.c,v 1.2 2002/07/10 13:13:47 scw Exp $     */
 
 /*
  * Copyright 2002 Wasabi Systems, Inc.
@@ -44,6 +44,12 @@
 void   _start(int argc, char **argv, char **envp, void (*cleanup)(void),
            const Obj_Entry *obj, struct ps_strings *ps_strings);
 
+__asm( "       .text                   \n"
+       "       .align 3                \n"
+       "       .globl start            \n"
+       "start: pta/l   __start, tr0    \n"
+       "       blink   tr0, r63");
+
 void
 _start(int argc, char **argv, char **envp, void (*cleanup)(void),
     const Obj_Entry *obj, struct ps_strings *ps_strings)
@@ -84,7 +90,7 @@
  * NOTE: Leave the RCS ID _after_ _start(), in case it gets placed in .text.
   */
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: crt0.c,v 1.1 2002/07/05 13:31:28 scw Exp $");
+__RCSID("$NetBSD: crt0.c,v 1.2 2002/07/10 13:13:47 scw Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "common.c"
diff -r dde529e56040 -r 3f2087e161db lib/csu/sh5/dot_init.h
--- a/lib/csu/sh5/dot_init.h    Wed Jul 10 13:09:04 2002 +0000
+++ b/lib/csu/sh5/dot_init.h    Wed Jul 10 13:13:47 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dot_init.h,v 1.1 2002/07/05 13:31:28 scw Exp $ */
+/*     $NetBSD: dot_init.h,v 1.2 2002/07/10 13:13:48 scw Exp $ */
 
 /*
  * Copyright 2002 Wasabi Systems, Inc.
@@ -101,8 +101,13 @@
                "       blink   tr0, r63                \n"\
                ".previous")
 
+#if __GNUC__ < 3
+#define        MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, _init_fallthru)
+#define        MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, _fini_fallthru)
+#else
 #define        MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, init_fallthru)
 #define        MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, fini_fallthru)
+#endif
 
 #define        MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init)
 #define        MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini)