/* src/vm/jit/powerpc64/linux/md-os.c - machine dependent PowerPC64 Linux functions
- Copyright (C) 1996-2005, 2006, 2007 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
+ Copyright (C) 2008 Theobroma Systems Ltd.
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: md-os.c 7888 2007-05-09 08:36:16Z tbfg $
-
*/
#include "config.h"
#include <assert.h>
+#include <stdint.h>
#include <ucontext.h>
#include "vm/types.h"
#include "vm/jit/powerpc64/codegen.h"
+#include "vm/jit/powerpc64/md.h"
#include "vm/jit/powerpc64/linux/md-abi.h"
-#if defined(ENABLE_THREADS)
-# include "threads/native/threads.h"
-#endif
+#include "threads/thread.hpp"
-#include "vm/exceptions.h"
-#include "vm/signallocal.h"
+#include "vm/signallocal.hpp"
#include "vm/jit/asmpart.h"
+#include "vm/jit/executionstate.h"
+#include "vm/jit/trap.hpp"
-#if defined(ENABLE_PROFILING)
-# include "vm/jit/optimizing/profile.h"
-#endif
-#include "vm/jit/stacktrace.h"
+/**
+ * Signal handler for hardware-exceptions.
+ */
+void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
+{
+ ucontext_t* _uc = (ucontext_t *) _p;
+ mcontext_t* _mc = &(_uc->uc_mcontext);
+ void* xpc = (void*) _mc->gp_regs[PT_NIP];
-/* md_signal_handler_sigsegv ***************************************************
-
- Signal handler for hardware-exceptions.
+ // Handle the trap.
+ trap_handle(TRAP_SIGSEGV, xpc, _p);
+}
-*******************************************************************************/
-void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
+/**
+ * Signal handler for patcher calls.
+ */
+void md_signal_handler_sigill(int sig, siginfo_t* siginfo, void* _p)
{
- ucontext_t *_uc;
- mcontext_t *_mc;
- u1 *pv;
- u1 *sp;
- u1 *ra;
- u1 *xpc;
- u4 mcode;
- s4 s1;
- s4 disp;
- s4 d;
- s4 type;
- ptrint addr;
- ptrint val;
- java_objectheader *e;
+ ucontext_t* _uc = (ucontext_t*) _p;
+ mcontext_t* _mc = &(_uc->uc_mcontext);
- _uc = (ucontext_t *) _p;
- _mc = &(_uc->uc_mcontext);
+ void* xpc =(void*) _mc->gp_regs[PT_NIP];
- /* get register values */
- pv = (u1*) _mc->gp_regs[REG_PV];
- sp = (u1*) _mc->gp_regs[REG_SP];
- ra = (u1*) _mc->gp_regs[PT_LNK]; /* correct for leafs */
- xpc =(u1*) _mc->gp_regs[PT_NIP];
-
- /* get the 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);
-
- val = _mc->gp_regs[d];
-
- if (s1 == REG_ZERO) {
- /* we use the exception type as load displacement */
- type = disp;
- } else {
- /* normal NPE */
- addr = _mc->gp_regs[s1];
- type = (s4) addr;
- }
- e = exceptions_new_hardware_exception(pv, sp, ra, xpc, type, val);
-
- _mc->gp_regs[REG_ITMP1] = (ptrint) e;
- _mc->gp_regs[REG_ITMP2_XPC] = (ptrint) xpc;
- _mc->gp_regs[PT_NIP] = (ptrint) asm_handle_exception;
+ // Handle the trap.
+ trap_handle(TRAP_SIGILL, xpc, _p);
}
tobj->pc = pc;
}
+#endif
-void md_critical_section_restart(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;
- u1 *pc;
- void *critical;
+ ucontext_t *_uc;
+ mcontext_t *_mc;
+ s4 i;
+ _uc = (ucontext_t *) context;
_mc = &(_uc->uc_mcontext);
- pc = (u1 *) _mc->gp_regs[PT_NIP];
+ /* read special registers */
+ es->pc = (u1 *) _mc->gp_regs[PT_NIP];
+ es->sp = (u1 *) _mc->gp_regs[REG_SP];
+ es->pv = (u1 *) _mc->gp_regs[REG_PV];
+ es->ra = (u1 *) _mc->gp_regs[PT_LNK];
+
+ /* read integer registers */
+ for (i = 0; i < INT_REG_CNT; i++)
+ es->intregs[i] = _mc->gp_regs[i];
- critical = critical_find_restart_point(pc);
+ /* read float registers */
+ /* Do not use the assignment operator '=', as the type of
+ * the _mc->fpregs[i] can cause invalid conversions. */
- if (critical != NULL) {
- log_println("md_critical_section_restart: pc=%p, npc=%p", pc, critical);
- _mc->gp_regs[PT_NIP] = (ptrint) critical;
- }
+ // The assertion below will fail because _mc->fp_regs[] also
+ // contains the "fpscr" register.
+ //assert(sizeof(_mc->fp_regs) == sizeof(es->fltregs));
+ os_memcpy(&es->fltregs, &_mc->fp_regs, sizeof(es->fltregs));
+}
+
+
+/* md_executionstate_write *****************************************************
+
+ Write the given executionstate back to the context.
+
+*******************************************************************************/
+
+void md_executionstate_write(executionstate_t *es, void *context)
+{
+ ucontext_t *_uc;
+ mcontext_t *_mc;
+ s4 i;
+
+ _uc = (ucontext_t *) context;
+ _mc = &(_uc->uc_mcontext);
+
+ /* write integer registers */
+ for (i = 0; i < INT_REG_CNT; i++)
+ _mc->gp_regs[i] = es->intregs[i];
+
+ /* write float registers */
+ /* Do not use the assignment operator '=', as the type of
+ * the _mc->fpregs[i] can cause invalid conversions. */
+
+ // The assertion below will fail because _mc->fp_regs[] also
+ // contains the "fpscr" register.
+ //assert(sizeof(_mc->fp_regs) == sizeof(es->fltregs));
+ os_memcpy(&_mc->fp_regs, &es->fltregs, sizeof(es->fltregs));
+
+ /* write special registers */
+ _mc->gp_regs[PT_NIP] = (ptrint) es->pc;
+ _mc->gp_regs[REG_SP] = (ptrint) es->sp;
+ _mc->gp_regs[REG_PV] = (ptrint) es->pv;
+ _mc->gp_regs[PT_LNK] = (ptrint) es->ra;
}
-#endif
/*
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