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bbb362e693
ChangeLog: * config/s390/linux.h (MD_FALLBACK_FRAME_STATE_FOR): For SIGSEGV and SIGBUS signal frames, the PSW address points *to* the faulting instruction, not after it. libjava/ChangeLog: * include/s390-signal.c (SIGNAL_HANDLER): Use SIGINFO-style prototype. (struct old_s390_kernel_sigaction): Likewise for k_sa_handler. (MAKE_THROW_FRAME): Do not modify PSW address. (INIT_SEGV): Install SIGINFO-style signal handler. (INIT_FPE): Likewise. From-SVN: r84506
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
// s390-signal.h - Catch runtime signals and turn them into exceptions
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// on an s390 based Linux system.
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/* Copyright (C) 2002 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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#ifndef JAVA_SIGNAL_H
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#define JAVA_SIGNAL_H 1
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#include <signal.h>
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#include <sys/syscall.h>
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#define HANDLE_SEGV 1
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#undef HANDLE_FPE
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#define SIGNAL_HANDLER(_name) \
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static void _name (int, siginfo_t *, void *)
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/* We no longer need to fiddle with the PSW address in the signal handler;
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this is now all handled correctly in MD_FALLBACK_FRAME_STATE_FOR. */
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#define MAKE_THROW_FRAME(_exception)
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/* For an explanation why we cannot simply use sigaction to
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install the handlers, see i386-signal.h. */
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/* We use old_kernel_sigaction here because we're calling the kernel
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directly rather than via glibc. The sigaction structure that the
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syscall uses is a different shape from the one in userland and not
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visible to us in a header file so we define it here. */
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struct old_s390_kernel_sigaction {
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void (*k_sa_handler) (int, siginfo_t *, void *);
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unsigned long k_sa_mask;
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unsigned long k_sa_flags;
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void (*sa_restorer) (void);
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};
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#define INIT_SEGV \
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do \
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{ \
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struct old_s390_kernel_sigaction kact; \
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kact.k_sa_handler = catch_segv; \
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kact.k_sa_mask = 0; \
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kact.k_sa_flags = SA_SIGINFO; \
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syscall (SYS_sigaction, SIGSEGV, &kact, NULL); \
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} \
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while (0)
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#define INIT_FPE \
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do \
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{ \
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struct old_s390_kernel_sigaction kact; \
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kact.k_sa_handler = catch_fpe; \
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kact.k_sa_mask = 0; \
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kact.k_sa_flags = SA_SIGINFO; \
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syscall (SYS_sigaction, SIGFPE, &kact, NULL); \
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} \
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while (0)
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#endif /* JAVA_SIGNAL_H */
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