/* src/vm/jit/powerpc/darwin/md-os.c - machine dependent PowerPC Darwin functions
- 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
+ Copyright (C) 1996-2005, 2006, 2007, 2008, 2009
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Christian Thalinger
-
- $Id: md-os.c 6186 2006-12-12 22:35:31Z twisti $
-
*/
#include <assert.h>
#include <signal.h>
+#include <stdint.h>
#include <ucontext.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"
-
+#include "threads/thread.hpp"
-/* md_signal_handler_sigsegv ***************************************************
+#include "vm/signallocal.hpp"
- NullPointerException signal handler for hardware null pointer
- check.
+#include "vm/jit/trap.hpp"
-*******************************************************************************/
+#if !__DARWIN_UNIX03
+#define __srr0 srr0
+#define __r0 r0
+#define __r1 r1
+#define __r13 r13
+#define __lr lr
+#define __ss ss
+#endif
+/**
+ * Signal handler for hardware-exceptions.
+ */
void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
- 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;
+ ucontext_t* _uc = (ucontext_t *) _p;
+ mcontext_t _mc = _uc->uc_mcontext;
+ ppc_thread_state_t* _ss = &(_mc->__ss);
- _uc = (ucontext_t *) _p;
- _mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
+ void* xpc = (void*) _ss->__srr0;
- /* get register values */
+ // Handle the trap.
+ trap_handle(TRAP_SIGSEGV, xpc, _p);
+}
- 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 */
+/**
+ * Signal handler for hardware-traps.
+ */
+void md_signal_handler_sigtrap(int sig, siginfo_t *siginfo, void *_p)
+{
+ ucontext_t* _uc = (ucontext_t *) _p;
+ mcontext_t _mc = _uc->uc_mcontext;
+ ppc_thread_state_t* _ss = &(_mc->__ss);
- mcode = *((u4 *) xpc);
+ void* xpc = (void*) _ss->__srr0;
- s1 = M_INSTR_OP2_IMM_A(mcode);
- disp = M_INSTR_OP2_IMM_I(mcode);
- d = M_INSTR_OP2_IMM_D(mcode);
+ // Handle the trap.
+ trap_handle(TRAP_SIGTRAP, xpc, _p);
+}
- gregs = &_ss->r0;
- addr = gregs[s1];
- val = gregs[d];
- e = exceptions_new_hardware_exception(pv, sp, ra, xpc, s1, disp, addr, val);
+/**
+ * Signal handler for hardware-patchers.
+ */
+void md_signal_handler_sigill(int sig, siginfo_t *siginfo, void *_p)
+{
+ ucontext_t* _uc = (ucontext_t *) _p;
+ mcontext_t _mc = _uc->uc_mcontext;
+ ppc_thread_state_t* _ss = &(_mc->__ss);
- /* set registers */
+ void* xpc = (void*) _ss->__srr0;
- _ss->r11 = (ptrint) e;
- _ss->r12 = (ptrint) xpc;
- _ss->srr0 = (ptrint) asm_handle_exception;
+ // Handle the trap.
+ trap_handle(TRAP_SIGILL, xpc, _p);
}
_uc = (ucontext_t *) _p;
_mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
+ _ss = &_mc->__ss;
- pc = (u1 *) _ss->srr0;
+ pc = (u1 *) _ss->__srr0;
t->pc = pc;
}
-#if defined(ENABLE_THREADS)
-void thread_restartcriticalsection(ucontext_t *_uc)
+/* md_executionstate_read ******************************************************
+
+ Read the given context into an executionstate.
+
+*******************************************************************************/
+
+void md_executionstate_read(executionstate_t *es, void *context)
{
- mcontext_t _mc;
- ppc_thread_state_t *_ss;
- void *critical;
+ ucontext_t* _uc = (ucontext_t *) context;
+ mcontext_t _mc = _uc->uc_mcontext;
+ ppc_thread_state_t* _ss = &(_mc->__ss);
+
+ /* read special registers */
+ es->pc = (uint8_t*) _ss->__srr0;
+ es->sp = (uint8_t*) _ss->__r1;
+ es->pv = (uint8_t*) _ss->__r13;
+ es->ra = (uint8_t*) _ss->__lr;
+
+ /* read integer registers */
+ unsigned int* regs = &(_ss->__r0);
+ for (int i = 0; i < INT_REG_CNT; i++)
+ es->intregs[i] = regs[i];
+
+ /* read float registers */
+ for (int i = 0; i < FLT_REG_CNT; i++)
+ es->fltregs[i] = 0xdeadbeefdeadbeefULL;
+}
- _mc = _uc->uc_mcontext;
- _ss = &_mc->ss;
- critical = critical_find_restart_point((void *) _ss->srr0);
+/* md_executionstate_write *****************************************************
- if (critical)
- _ss->srr0 = (ptrint) critical;
+ Write the given executionstate back to the context.
+
+*******************************************************************************/
+
+void md_executionstate_write(executionstate_t *es, void *context)
+{
+ ucontext_t* _uc = (ucontext_t *) context;
+ mcontext_t _mc = _uc->uc_mcontext;
+ ppc_thread_state_t* _ss = &(_mc->__ss);
+
+ /* write integer registers */
+ unsigned int* regs = &(_ss->__r0);
+ for (int i = 0; i < INT_REG_CNT; i++)
+ regs[i] = es->intregs[i];
+
+ /* write special registers */
+ _ss->__srr0 = (intptr_t) es->pc;
+ _ss->__r1 = (intptr_t) es->sp;
+ _ss->__r13 = (intptr_t) es->pv;
+ _ss->__lr = (intptr_t) es->ra;
}
-#endif
/*
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