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dwarf2-signal.h: New file.

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2001-05-18  Andrew Haley  <aph@cambridge.redhat.com>

        * include/dwarf2-signal.h: New file.
        * configure.in (SYSDEP_SOURCES): Add dwarf2-signal.h for PPC.
        * configure.host (EXCEPTIONSPEC): Don't use sjlj on PPC.
        * configure: Rebuilt.

From-SVN: r42400
This commit is contained in:
Andrew Haley 2001-05-21 16:59:42 +00:00 committed by Andrew Haley
parent 68981e3a32
commit 01936f3a7d
5 changed files with 378 additions and 283 deletions
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7
libjava/ChangeLog
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@ -1,3 +1,10 @@
2001-05-18 Andrew Haley <aph@cambridge.redhat.com>
* include/dwarf2-signal.h: New file.
* configure.in (SYSDEP_SOURCES): Add dwarf2-signal.h for PPC.
* configure.host (EXCEPTIONSPEC): Don't use sjlj on PPC.
* configure: Rebuilt.
2001-05-21 Bryce McKinlay <bryce@waitaki.otago.ac.nz>
* configure.in: Update boehm-gc include dir for new GC version.

578
libjava/configure vendored
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1
libjava/configure.host
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@ -70,7 +70,6 @@ case "${host}" in
;;
powerpc*-*)
libgcj_interpreter=yes
libgcj_sjlj=yes
;;
sparc-*)
;;

3
libjava/configure.in
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@ -734,6 +734,9 @@ case "${host}" in
# SYSDEP_SOURCES=sysdep/ia64.c
# test -d sysdep || mkdir sysdep
# ;;
powerpc-*-linux*)
SIGNAL_HANDLER=include/dwarf2-signal.h
;;
*)
SIGNAL_HANDLER=include/default-signal.h
;;

72
libjava/include/dwarf2-signal.h Normal file
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@ -0,0 +1,72 @@
// dwarf2-signal.h - Catch runtime signals and turn them into exceptions.
/* Copyright (C) 2000, 2001 Free Software Foundation
This file is part of libgcj.
Use this file for every target for which the dwarf2 unwinder in
libgcc can unwind through signal handlers and no special actions
are needed.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
#ifndef JAVA_SIGNAL_H
#define JAVA_SIGNAL_H 1
#include <signal.h>
#include <sys/syscall.h>
#define HANDLE_SEGV 1
#undef HANDLE_FPE
#define SIGNAL_HANDLER(_name) \
static void _Jv_##_name (int)
class java::lang::Throwable;
// Unwind the stack to the point at which the signal was generated and
// then throw an exception. With the dwarf2 unwinder we don't need to
// do anything.
#define MAKE_THROW_FRAME(_exception) \
do \
{ \
} \
while (0)
#define INIT_SEGV \
do \
{ \
nullp = new java::lang::NullPointerException (); \
struct sigaction act; \
act.sa_handler = _Jv_catch_segv; \
sigemptyset (&act.sa_mask); \
act.sa_flags = 0; \
syscall (SYS_sigaction, SIGSEGV, &act, NULL); \
} \
while (0)
#define INIT_FPE \
do \
{ \
arithexception = new java::lang::ArithmeticException \
(JvNewStringLatin1 ("/ by zero")); \
struct sigaction act; \
act.sa_handler = _Jv_catch_fpe; \
sigemptyset (&act.sa_mask); \
act.sa_flags = 0; \
syscall (SYS_sigaction, SIGFPE, &act, NULL); \
} \
while (0)
/* We use syscall(SYS_sigaction) in INIT_SEGV and INIT_FPE instead of
* sigaction() because on some systems the pthreads wrappers for
* signal handlers are not compiled with unwind information, so it's
* not possible to unwind through them. This is a problem that will
* go away once all systems have pthreads libraries that are
* compiled with full unwind info. */
#endif /* JAVA_SIGNAL_H */