* include/mips-signal.h: Update copyright.

	(struct kernel_sigaction): Removed.
	(SIGNAL_HANDLER): Changed prototype.
	(MAKE_THROW_FRAME): Added cast.
	(INIT_SEGV): Use sigaction instead of syscall.
	(INIT_FPE): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@115624 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 22 insertions, 42 deletions

diff --git a/libjava/include/mips-signal.h b/libjava/include/mips-signal.h
index 732ba0b1f67..63218ea84a7 100644
--- a/libjava/include/mips-signal.h
+++ b/libjava/include/mips-signal.h
@@ -1,7 +1,8 @@
 // mips-signal.h - Catch runtime signals and turn them into exceptions
 // on an mips based Linux system. 
 
-/* Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004 Free Software Foundation
+/* Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, 2006
+   Free Software Foundation
 
    This file is part of libgcj.
 
@@ -35,28 +36,10 @@ typedef struct _sig_ucontext {
     sigset_t	  uc_sigmask;
 } sig_ucontext_t;
 
-/* We use kernel_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.
-   Additionally we want a proper prototype for the handler function
-   with the struct sigcontext pointer passed by the kernel as the 2nd
-   argument, which isn't there in userland headers. */
-
-struct kernel_sigaction {
-    unsigned int k_sa_flags;
-    void       (*k_sa_handler) (int, siginfo_t *, sig_ucontext_t *);
-    sigset_t     k_sa_mask;
-    void       (*k_sa_restorer)(void);
-    int          k_sa_resv[1];	/* reserved */
-};
-
-
-
 #define SIGNAL_HANDLER(_name) \
 static void _name (int _dummy __attribute__ ((__unused__)), \
 		   siginfo_t *_info __attribute__ ((__unused__)), \
-		   sig_ucontext_t *_arg __attribute__ ((__unused__)))
+		   void *_arg __attribute__ ((__unused__)))
 
 /*
  *  MIPS leaves pc pointing at the faulting instruction, but the
@@ -66,35 +49,32 @@ static void _name (int _dummy __attribute__ ((__unused__)), \
 #define MAKE_THROW_FRAME(_exception) \
 do                                   \
 {                                    \
-  _arg->uc_mcontext.sc_pc += 4;      \
+  ((sig_ucontext_t *)_arg)->uc_mcontext.sc_pc += 4;      \
   (void)_dummy;                      \
   (void)_info;                       \
 }                                    \
 while (0)
 
-/* For an explanation why we cannot simply use sigaction to
-   install the handlers, see i386-signal.h.  */
-
-#define INIT_SEGV                                    \
-do                                                   \
-  {                                                  \
-    struct kernel_sigaction kact;                    \
-    kact.k_sa_handler = catch_segv;                  \
-    kact.k_sa_flags = SA_SIGINFO | SA_NODEFER;       \
-    sigemptyset (&kact.k_sa_mask);                   \
-    syscall (SYS_sigaction, SIGSEGV, &kact, NULL);   \
-  }                                                  \
+#define INIT_SEGV                            \
+do                                           \
+  {                                          \
+    struct sigaction act;                    \
+    act.sa_sigaction = catch_segv;           \
+    act.sa_flags = SA_SIGINFO | SA_NODEFER;  \
+    sigemptyset (&act.sa_mask);              \
+    sigaction(SIGSEGV, &act, NULL);          \
+  }                                          \
 while (0)
 
-#define INIT_FPE                                     \
-do                                                   \
-  {                                                  \
-    struct kernel_sigaction kact;                    \
-    kact.k_sa_handler = catch_fpe;                   \
-    kact.k_sa_flags = SA_SIGINFO | SA_NODEFER;       \
-    sigemptyset (&kact.k_sa_mask);                   \
-    syscall (SYS_sigaction, SIGFPE, &kact, NULL);    \
-  }                                                  \
+#define INIT_FPE                             \
+do                                           \
+  {                                          \
+    struct sigaction act;                    \
+    act.sa_sigaction = catch_fpe;            \
+    act.sa_flags = SA_SIGINFO | SA_NODEFER;  \
+    sigemptyset (&act.sa_mask);              \
+    sigaction(SIGFPE, &act, NULL);           \
+  }                                          \
 while (0)
 
 #undef HANDLE_DIVIDE_OVERFLOW