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author | Ben Cheng <bccheng@google.com> | 2012-10-01 10:30:31 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2012-10-01 10:30:31 -0700 |
commit | 82bcbebce43f0227f506d75a5b764b6847041bae (patch) | |
tree | fe9f8597b48a430c4daeb5123e3e8eb28e6f9da9 /gcc-4.7/libjava/include/sh-signal.h | |
parent | 3c052de3bb16ac53b6b6ed659ec7557eb84c7590 (diff) | |
download | toolchain_gcc-82bcbebce43f0227f506d75a5b764b6847041bae.tar.gz toolchain_gcc-82bcbebce43f0227f506d75a5b764b6847041bae.tar.bz2 toolchain_gcc-82bcbebce43f0227f506d75a5b764b6847041bae.zip |
Initial check-in of gcc 4.7.2.
Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365
Diffstat (limited to 'gcc-4.7/libjava/include/sh-signal.h')
-rw-r--r-- | gcc-4.7/libjava/include/sh-signal.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/gcc-4.7/libjava/include/sh-signal.h b/gcc-4.7/libjava/include/sh-signal.h new file mode 100644 index 000000000..3a96ce25f --- /dev/null +++ b/gcc-4.7/libjava/include/sh-signal.h @@ -0,0 +1,75 @@ +// sh-signal.h - Catch runtime signals and turn them into exceptions +// on a SuperH based Linux system. + +/* Copyright (C) 2004, 2006 Free Software Foundation + + This file is part of libgcj. + +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 +#define HANDLE_FPE 1 + +/* The third parameter to the signal handler points to something with + * this structure defined in asm/ucontext.h, but the name clashes with + * struct ucontext from sys/ucontext.h so this private copy is used. */ +typedef struct _sig_ucontext { + unsigned long uc_flags; + struct _sig_ucontext *uc_link; + stack_t uc_stack; + struct sigcontext uc_mcontext; + sigset_t uc_sigmask; +} sig_ucontext_t; + +#define SIGNAL_HANDLER(_name) \ + static void _name (int , siginfo_t *, sig_ucontext_t *_uc) + +#define MAKE_THROW_FRAME(_exception) + +/* For an explanation why we cannot simply use sigaction to + install the handlers, see i386-signal.h. */ + +/* We use kernel_old_sigaction here because we're calling the kernel + directly rather than via glibc. The sigaction structure that the + syscall uses is a different shape from the one in userland and not + visible to us in a header file so we define it here. */ + +struct kernel_old_sigaction { + void (*k_sa_handler) (int, siginfo_t *, sig_ucontext_t *); + unsigned long k_sa_mask; + unsigned long k_sa_flags; + void (*k_sa_restorer) (void); +}; + +#define INIT_SEGV \ +do \ + { \ + struct kernel_old_sigaction kact; \ + kact.k_sa_handler = catch_segv; \ + kact.k_sa_mask = 0; \ + kact.k_sa_flags = SA_SIGINFO | SA_NODEFER; \ + syscall (SYS_sigaction, SIGSEGV, &kact, NULL); \ + } \ +while (0) + +#define INIT_FPE \ +do \ + { \ + struct kernel_old_sigaction kact; \ + kact.k_sa_handler = catch_fpe; \ + kact.k_sa_mask = 0; \ + kact.k_sa_flags = SA_SIGINFO | SA_NODEFER; \ + syscall (SYS_sigaction, SIGFPE, &kact, NULL); \ + } \ +while (0) + +#endif /* JAVA_SIGNAL_H */ |