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

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* 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
This commit is contained in:
Eric Botcazou 2009-12-08 18:38:23 +00:00 committed by Eric Botcazou
parent 17314cd9eb
commit 6b4428ecb6
4 changed files with 25 additions and 85 deletions
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11
libjava/ChangeLog
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@ -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.

4
libjava/configure.host
View File

@ -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

58
libjava/include/dwarf2-signal.h
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@ -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 \

37
libjava/include/sparc-signal.h
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@ -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) \
static void _name (int _dummy __attribute__ ((__unused__)), \
siginfo_t *_info __attribute__ ((__unused__)), \
void *arg __attribute__ ((__unused__)))
#define SIGNAL_HANDLER(_name) \
static void _Jv_##_name (int, \
siginfo_t *_si __attribute__ ((__unused__)), \
void *_uc __attribute__ ((__unused__)))
#ifdef __arch64__
#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 MAKE_THROW_FRAME(_exception)
#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); \
} \