/* src/vm/jit/powerpc/darwin/md-os.c - machine dependent PowerPC Darwin functions
- Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
- R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
- C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
- Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
+ E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
+ J. Wenninger, Institut f. Computersprachen - TU Wien
This file is part of CACAO.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA.
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
- Contact: cacao@complang.tuwien.ac.at
+ Contact: cacao@cacaojvm.org
Authors: Christian Thalinger
- Changes:
-
- $Id: md-os.c 3486 2005-10-21 13:45:10Z twisti $
+ $Id: md-os.c 6186 2006-12-12 22:35:31Z twisti $
*/
+#include "config.h"
+
+#include <assert.h>
#include <signal.h>
#include <ucontext.h>
-#include "config.h"
#include "vm/types.h"
+#include "vm/jit/powerpc/codegen.h"
#include "vm/jit/powerpc/darwin/md-abi.h"
#include "vm/exceptions.h"
#include "vm/global.h"
+#include "vm/signallocal.h"
#include "vm/stringlocal.h"
#include "vm/jit/asmpart.h"
#include "vm/jit/stacktrace.h"
-/* signal_handler_sigsegv ******************************************************
+/* md_signal_handler_sigsegv ***************************************************
- NullPointerException signal handler for hardware null pointer check.
+ NullPointerException signal handler for hardware null pointer
+ check.
*******************************************************************************/
-void signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
+void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
ucontext_t *_uc;
mcontext_t _mc;
ppc_thread_state_t *_ss;
- ptrint *gregs;
- u4 instr;
- s4 reg;
- ptrint addr;
u1 *pv;
u1 *sp;
- functionptr ra;
- functionptr xpc;
+ u1 *ra;
+ u1 *xpc;
+ u4 mcode;
+ s4 s1;
+ s4 disp;
+ s4 d;
+ ptrint *gregs;
+ ptrint addr;
+ ptrint val;
+ java_objectheader *e;
_uc = (ucontext_t *) _p;
_mc = _uc->uc_mcontext;
_ss = &_mc->ss;
- /* check for NullPointerException */
+ /* get register values */
+
+ pv = (u1 *) _ss->r13;
+ sp = (u1 *) _ss->r1;
+ ra = (u1 *) _ss->lr; /* this is correct for leafs */
+ xpc = (u1 *) _ss->srr0;
+
+ /* get exception-throwing instruction */
+
+ mcode = *((u4 *) xpc);
+
+ s1 = M_INSTR_OP2_IMM_A(mcode);
+ disp = M_INSTR_OP2_IMM_I(mcode);
+ d = M_INSTR_OP2_IMM_D(mcode);
gregs = &_ss->r0;
+ addr = gregs[s1];
+ val = gregs[d];
+
+ e = exceptions_new_hardware_exception(pv, sp, ra, xpc, s1, disp, addr, val);
+
+ /* set registers */
+
+ _ss->r11 = (ptrint) e;
+ _ss->r12 = (ptrint) xpc;
+ _ss->srr0 = (ptrint) asm_handle_exception;
+}
+
- instr = *((u4 *) _ss->srr0);
- reg = (instr >> 16) & 31;
- addr = gregs[reg];
+/* md_signal_handler_sigusr2 ***************************************************
- if (addr == 0) {
- pv = (u1 *) _ss->r13;
- sp = (u1 *) _ss->r1;
- ra = (functionptr) _ss->lr; /* this is correct for leafs */
- xpc = (functionptr) _ss->srr0;
+ Signal handler for profiling sampling.
- _ss->r11 = (ptrint) stacktrace_hardware_nullpointerexception(pv, sp, ra, xpc);
+*******************************************************************************/
+
+void md_signal_handler_sigusr2(int sig, siginfo_t *siginfo, void *_p)
+{
+ threadobject *t;
+ ucontext_t *_uc;
+ mcontext_t _mc;
+ ppc_thread_state_t *_ss;
+ u1 *pc;
+
+ t = THREADOBJECT;
+
+ _uc = (ucontext_t *) _p;
+ _mc = _uc->uc_mcontext;
+ _ss = &_mc->ss;
+
+ pc = (u1 *) _ss->srr0;
+
+ t->pc = pc;
+}
+
+
+#if defined(ENABLE_THREADS)
+void thread_restartcriticalsection(ucontext_t *_uc)
+{
+ mcontext_t _mc;
+ ppc_thread_state_t *_ss;
+ void *critical;
+
+ _mc = _uc->uc_mcontext;
+ _ss = &_mc->ss;
- _ss->r12 = (ptrint) xpc;
- _ss->srr0 = (ptrint) asm_handle_exception;
+ critical = critical_find_restart_point((void *) _ss->srr0);
- } else {
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Segmentation fault: 0x%08lx at 0x%08lx",
- addr, _ss->srr0);
- }
+ if (critical)
+ _ss->srr0 = (ptrint) critical;
}
+#endif
/*