/* 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 2921 2005-07-07 09:26:30Z 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/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"
-#if 0
-/* cacao_catch_Handler *********************************************************
+/* md_signal_handler_sigsegv ***************************************************
- XXX
+ NullPointerException signal handler for hardware null pointer
+ check.
*******************************************************************************/
-int cacao_catch_Handler(mach_port_t thread)
+void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
-#if defined(USE_THREADS)
- unsigned int *regs;
- unsigned int crashpc;
- s4 instr, reg;
-/* java_objectheader *xptr; */
-
- /* Mach stuff */
- thread_state_flavor_t flavor = PPC_THREAD_STATE;
- mach_msg_type_number_t thread_state_count = PPC_THREAD_STATE_COUNT;
- ppc_thread_state_t thread_state;
- kern_return_t r;
-
- if (checknull)
- return 0;
-
- r = thread_get_state(thread, flavor,
- (natural_t*)&thread_state, &thread_state_count);
- if (r != KERN_SUCCESS) {
- log_text("thread_get_state failed");
- assert(0);
- }
-
- regs = &thread_state.r0;
- crashpc = thread_state.srr0;
-
- instr = *(s4*) crashpc;
- reg = (instr >> 16) & 31;
-
- if (!regs[reg]) {
-/* This is now handled in asmpart because it needs to run in the throwing
- * thread */
-/* xptr = new_nullpointerexception(); */
-
- regs[REG_ITMP2_XPC] = crashpc;
-/* regs[REG_ITMP1_XPTR] = (u4) xptr; */
- thread_state.srr0 = (u4) asm_handle_nullptr_exception;
-
- r = thread_set_state(thread, flavor,
- (natural_t*)&thread_state, thread_state_count);
- if (r != KERN_SUCCESS) {
- log_text("thread_set_state failed");
- assert(0);
- }
-
- return 1;
- }
-
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Segmentation fault at %p", regs[reg]);
-#endif
+ ucontext_t *_uc;
+ mcontext_t _mc;
+ ppc_thread_state_t *_ss;
+ u1 *pv;
+ u1 *sp;
+ 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;
+
+ /* 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);
- return 0;
+ 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;
}
-#endif
-/* signal_handler_sigsegv ******************************************************
+/* md_signal_handler_sigusr2 ***************************************************
- NullPointerException signal handler for hardware null pointer check.
+ Signal handler for profiling sampling.
*******************************************************************************/
-void signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
+void md_signal_handler_sigusr2(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;
+ 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;
- uc = (ucontext_t *) _p;
- mc = uc->uc_mcontext;
- ss = &mc->ss;
+ pc = (u1 *) _ss->srr0;
- /* check for NullPointerException */
+ t->pc = pc;
+}
- gregs = &ss->r0;
- instr = *((u4 *) ss->srr0);
- reg = (instr >> 16) & 31;
- addr = gregs[reg];
+#if defined(ENABLE_THREADS)
+void thread_restartcriticalsection(ucontext_t *_uc)
+{
+ mcontext_t _mc;
+ ppc_thread_state_t *_ss;
+ void *critical;
- if (addr == 0) {
- /* set the REG_ITMP1_XPTR, REG_ITMP2_XPC and new PC */
+ _mc = _uc->uc_mcontext;
+ _ss = &_mc->ss;
- ss->r11 = (ptrint) new_nullpointerexception();
- ss->r12 = ss->srr0;
- 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 at 0x%08lx", addr);
- }
+ if (critical)
+ _ss->srr0 = (ptrint) critical;
}
+#endif
/*
projects / cacao.git / blobdiff