mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-24 07:31:32 +00:00
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
// 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 */
|