| 1 | // sparc-signal.h - Catch runtime signals and turn them into exceptions.
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| 2 |
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| 3 | /* Copyright (C) 1998, 1999, 2000 Free Software Foundation
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| 4 |
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| 5 | This file is part of libgcj.
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| 6 |
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| 7 | This software is copyrighted work licensed under the terms of the
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| 8 | Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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| 9 | details. */
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| 10 |
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| 11 | #ifndef JAVA_SIGNAL_H
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| 12 | #define JAVA_SIGNAL_H 1
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| 13 |
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| 14 | #include <signal.h>
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| 15 | #include <ucontext.h>
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| 16 |
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| 17 | #define HANDLE_SEGV 1
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| 18 | #define HANDLE_FPE 1
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| 19 |
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| 20 | #define SIGNAL_HANDLER(_name) \
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| 21 | static void _name (int _dummy, siginfo_t *_info, void *arg)
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| 22 |
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| 23 | #ifdef __arch64__
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| 24 | #define FLUSH_REGISTER_WINDOWS \
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| 25 | asm volatile ("flushw");
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| 26 | #else
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| 27 | #define FLUSH_REGISTER_WINDOWS \
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| 28 | asm volatile ("ta 3");
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| 29 | #endif
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| 30 |
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| 31 | #define MAKE_THROW_FRAME(_exception) \
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| 32 | do \
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| 33 | { \
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| 34 | ucontext_t *_context = (ucontext_t *) arg; \
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| 35 | (void)_dummy; \
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| 36 | (void)_info; \
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| 37 | register long sp = _context->uc_mcontext.gregs[REG_SP]; \
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| 38 | register long retaddr = _context->uc_mcontext.gregs[REG_O7]; \
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| 39 | FLUSH_REGISTER_WINDOWS; \
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| 40 | asm volatile ("mov %0, %%i6; mov %1, %%i7" \
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| 41 | : : "r"(sp), "r"(retaddr)); \
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| 42 | } \
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| 43 | while (0)
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| 44 |
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| 45 | #define INIT_SEGV \
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| 46 | do \
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| 47 | { \
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| 48 | nullp = new java::lang::NullPointerException (); \
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| 49 | struct sigaction act; \
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| 50 | act.sa_sigaction = catch_segv; \
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| 51 | act.sa_flags = SA_SIGINFO | SA_NODEFER; \
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| 52 | sigemptyset (&act.sa_mask); \
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| 53 | sigaction (SIGSEGV, &act, NULL); \
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| 54 | } \
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| 55 | while (0)
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| 56 |
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| 57 | #define INIT_FPE \
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| 58 | do \
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| 59 | { \
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| 60 | arithexception = new java::lang::ArithmeticException \
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| 61 | (JvNewStringLatin1 ("/ by zero")); \
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| 62 | struct sigaction act; \
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| 63 | act.sa_flags = SA_SIGINFO | SA_NODEFER; \
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| 64 | act.sa_sigaction = catch_fpe; \
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| 65 | sigemptyset (&act.sa_mask); \
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| 66 | sigaction (SIGFPE, &act, NULL); \
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| 67 | } \
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| 68 | while (0)
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| 69 |
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| 70 | #endif /* JAVA_SIGNAL_H */
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