configure.host (sparc*-sun-solaris2.*): New case.

* configure.host (sparc*-sun-solaris2.*): New case.
	* include/dwarf2-signal.h (MAKE_THROW_FRAME, SPARC case): Make dummy.
	* include/sparc-signal.h: Do not include ucontext.h.
	(SIGNAL_HANDLER): Rename symbol.
	(FLUSH_REGISTER_WINDOWS): Delete.
	(MAKE_THROW_FRAME): Make dummy.
	(INIT_SEGV): Adjust for above renaming.
	(INIT_FPE): Likewise.

From-SVN: r155092

libjava/ChangeLog

@@ -1,3 +1,14 @@
+2009-12-08  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* configure.host (sparc*-sun-solaris2.*): New case.
+	* include/dwarf2-signal.h (MAKE_THROW_FRAME, SPARC case): Make dummy.
+	* include/sparc-signal.h: Do not include ucontext.h.
+	(SIGNAL_HANDLER): Rename symbol.
+	(FLUSH_REGISTER_WINDOWS): Delete.
+	(MAKE_THROW_FRAME): Make dummy.
+	(INIT_SEGV): Adjust for above renaming.
+	(INIT_FPE): Likewise.
+
 2009-12-07  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* configure.ac (net/if.h check): Include sys/socket.h if present.

libjava/configure.host

@@ -340,6 +340,10 @@ EOF
 	can_unwind_signal=yes
 	DIVIDESPEC=-fuse-divide-subroutine
 	;;
+  sparc*-sun-solaris2.*)
+	slow_pthread_self=
+	can_unwind_signal=yes
+	;;
 esac
 
 case "${host}" in

libjava/include/dwarf2-signal.h

@@ -1,6 +1,6 @@
 // dwarf2-signal.h - Catch runtime signals and turn them into exceptions.
 
-/* Copyright (C) 2000, 2001  Free Software Foundation
+/* Copyright (C) 2000, 2001, 2009  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -58,61 +58,7 @@ do									\
   _sc->sc_ip++;								\
 }									\
 while (0)
-#elif defined(__sparc__)
+
-/* We could do the unwind of the signal frame quickly by hand here like
-   sparc-signal.h does under Solaris, but that makes debugging unwind
-   failures almost impossible.  */
-#if !defined(__arch64__)
-#define MAKE_THROW_FRAME(_exception)					\
-do									\
-{									\
-  /* Sparc-32 leaves PC pointing at a faulting instruction		\
-   always.								\
-   We advance the PC one instruction past the exception causing PC.	\
-   This is done because FDEs are found with "context->ra - 1" in the	\
-   unwinder.								\
-   Also, the dwarf2 unwind machinery is going to add 8 to the		\
-   PC it uses on Sparc.  So we adjust the PC here.  We do it here	\
-   because we run once for such an exception, however the Sparc specific\
-   unwind can run multiple times for the same exception and it would	\
-   adjust the PC more than once resulting in a bogus value.  */		\
-  struct sig_regs {							\
-    unsigned int psr, pc, npc, y, u_regs[16];				\
-  } *regp;								\
-  unsigned int insn;							\
-  __asm__ __volatile__("ld [%%i7 + 8], %0" : "=r" (insn));		\
-  /* mov __NR_sigaction, %g1; Old signal stack layout */		\
-  if (insn == 0x821020d8)						\
-    regp = (struct sig_regs *) _sip;					\
-  else									\
-    /* mov __NR_rt_sigaction, %g1; New signal stack layout */		\
-    regp = (struct sig_regs *) (_sip + 1);				\
-  regp->pc = ((regp->pc + 4) - 8);					\
-}									\
-while (0)
-#else
-#define MAKE_THROW_FRAME(_exception)					\
-do									\
-{									\
-  /* Sparc-64 leaves PC pointing at a faulting instruction		\
-   always.								\
-   We advance the PC one instruction past the exception causing PC.	\
-   This is done because FDEs are found with "context->ra - 1" in the	\
-   unwinder.								\
-   Also, the dwarf2 unwind machinery is going to add 8 to the		\
-   PC it uses on Sparc.  So we adjust the PC here.  We do it here	\
-   because we run once for such an exception, however the Sparc specific\
-   unwind can run multiple times for the same exception and it would	\
-   adjust the PC more than once resulting in a bogus value.  */		\
-  struct pt_regs {							\
-    unsigned long u_regs[16];						\
-    unsigned long tstate, tpc, tnpc;					\
-    unsigned int y, fprs;						\
-  } *regp = (struct pt_regs *) (_sip + 1);				\
-  regp->tpc = ((regp->tpc + 4) - 8);					\
-}									\
-while (0)
-#endif
 #else
 #define MAKE_THROW_FRAME(_exception)		\
 do						\

libjava/include/sparc-signal.h

@@ -1,6 +1,6 @@
 // sparc-signal.h - Catch runtime signals and turn them into exceptions.
 
-/* Copyright (C) 1998, 1999, 2000  Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2009  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -12,43 +12,22 @@ details.  */
 #define JAVA_SIGNAL_H 1
 
 #include <signal.h>
-#include <ucontext.h>
 
 #define HANDLE_SEGV 1
 #define HANDLE_FPE 1
 
-#define SIGNAL_HANDLER(_name) 						\
+#define SIGNAL_HANDLER(_name)						\
-static void _name (int _dummy __attribute__ ((__unused__)), \
+static void _Jv_##_name (int,						\
-		   siginfo_t *_info __attribute__ ((__unused__)), \
+			 siginfo_t *_si __attribute__ ((__unused__)),	\
-		   void *arg __attribute__ ((__unused__)))
+			 void *_uc __attribute__ ((__unused__)))
 
-#ifdef __arch64__
+#define MAKE_THROW_FRAME(_exception)
-#define FLUSH_REGISTER_WINDOWS					\
-  asm volatile ("flushw");
-#else
-#define FLUSH_REGISTER_WINDOWS					\
-  asm volatile ("ta 3");
-#endif
-
-#define MAKE_THROW_FRAME(_exception)				\
-do								\
-{								\
-  ucontext_t *_context = (ucontext_t *) arg;                    \
-  (void)_dummy;							\
-  (void)_info;							\
-  register long sp = _context->uc_mcontext.gregs[REG_SP];	\
-  register long retaddr = _context->uc_mcontext.gregs[REG_O7];	\
-  FLUSH_REGISTER_WINDOWS;					\
-  asm volatile ("mov %0, %%i6; mov %1, %%i7"			\
-		: : "r"(sp), "r"(retaddr));			\
-}								\
-while (0)
 
 #define INIT_SEGV						\
 do								\
   {								\
     struct sigaction act;					\
-    act.sa_sigaction = catch_segv;				\
+    act.sa_sigaction = _Jv_catch_segv;				\
     act.sa_flags = SA_SIGINFO | SA_NODEFER;			\
     sigemptyset (&act.sa_mask);					\
     sigaction (SIGSEGV, &act, NULL);				\
@@ -59,8 +38,8 @@ while (0)
 do								\
   {								\
     struct sigaction act;					\
+    act.sa_sigaction = _Jv_catch_fpe;				\
     act.sa_flags = SA_SIGINFO | SA_NODEFER;			\
-    act.sa_sigaction = catch_fpe;				\
     sigemptyset (&act.sa_mask);					\
     sigaction (SIGFPE, &act, NULL);				\
   }								\