/* 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
+ 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.
- $Id: md-os.c 8283 2007-08-09 15:10:05Z twisti $
-
*/
#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/builtin.h"
#include "vm/signallocal.h"
+#include "vm/os.hpp"
#include "vm/jit/asmpart.h"
+#include "vm/jit/executionstate.h"
#if defined(ENABLE_PROFILING)
# include "vm/jit/optimizing/profile.h"
#endif
-#include "vm/jit/stacktrace.h"
+#include "vm/jit/trap.h"
/* md_signal_handler_sigsegv ***************************************************
void md_signal_handler_sigsegv(int sig, siginfo_t *siginfo, void *_p)
{
- stackframeinfo sfi;
ucontext_t *_uc;
mcontext_t *_mc;
u1 *pv;
val = _mc->gp_regs[d];
if (s1 == REG_ZERO) {
- /* we use the exception type as load displacement */
+ /* We use the exception type as load displacement. */
type = disp;
+
+ if (type == TRAP_COMPILER) {
+ /* The XPC is the RA minus 1, because the RA points to the
+ instruction after the call. */
+
+ xpc = ra - 4;
+ }
}
else {
- /* normal NPE */
+ /* Normal NPE. */
addr = _mc->gp_regs[s1];
- type = (s4) addr;
+ type = (int) addr;
}
- /* create stackframeinfo */
+ /* Handle the trap. */
+
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
+
+ /* Set registers. */
+
+ switch (type) {
+ case TRAP_COMPILER:
+ if (p != NULL) {
+ _mc->gp_regs[REG_PV] = (uintptr_t) p;
+ _mc->gp_regs[PT_NIP] = (uintptr_t) p;
+ break;
+ }
+
+ /* Get and set the PV from the parent Java method. */
- stacktrace_create_extern_stackframeinfo(&sfi, pv, sp, ra, xpc);
+ pv = md_codegen_get_pv_from_pc(ra);
- /* Handle the type. */
+ _mc->gp_regs[REG_PV] = (uintptr_t) pv;
- p = signal_handle(xpc, type, val);
+ /* Get the exception object. */
- /* remove stackframeinfo */
+ p = builtin_retrieve_exception();
- stacktrace_remove_stackframeinfo(&sfi);
+ assert(p != NULL);
- _mc->gp_regs[REG_ITMP1] = (intptr_t) p;
- _mc->gp_regs[REG_ITMP2_XPC] = (intptr_t) xpc;
- _mc->gp_regs[PT_NIP] = (intptr_t) asm_handle_exception;
+ /* fall-through */
+
+ case TRAP_PATCHER:
+ if (p == NULL)
+ break;
+
+ /* fall-through */
+
+ default:
+ _mc->gp_regs[REG_ITMP1_XPTR] = (uintptr_t) p;
+ _mc->gp_regs[REG_ITMP2_XPC] = (uintptr_t) xpc;
+ _mc->gp_regs[PT_NIP] = (uintptr_t) asm_handle_exception;
+ }
}
#endif
-/* md_critical_section_restart *************************************************
+/* md_executionstate_read ******************************************************
- Search the critical sections tree for a matching section and set
- the PC to the restart point, if necessary.
+ Read the given context into an executionstate.
*******************************************************************************/
-#if defined(ENABLE_THREADS)
-void md_critical_section_restart(ucontext_t *_uc)
+void md_executionstate_read(executionstate_t *es, void *context)
{
- mcontext_t *_mc;
- u1 *pc;
- u1 *npc;
+#if 0
+ ucontext_t *_uc;
+ mcontext_t *_mc;
+ unsigned long *_gregs;
+ s4 i;
- _mc = &(_uc->uc_mcontext);
+ _uc = (ucontext_t *) context;
- pc = (u1 *) _mc->gp_regs[PT_NIP];
+ _mc = _uc->uc_mcontext.uc_regs;
+ _gregs = _mc->gregs;
+
+ /* read special registers */
+ es->pc = (u1 *) _gregs[PT_NIP];
+ es->sp = (u1 *) _gregs[REG_SP];
+ es->pv = (u1 *) _gregs[REG_PV];
+ es->ra = (u1 *) _gregs[PT_LNK];
- npc = critical_find_restart_point(pc);
+ /* read integer registers */
+ for (i = 0; i < INT_REG_CNT; i++)
+ es->intregs[i] = _gregs[i];
- if (npc != NULL)
- _mc->gp_regs[PT_NIP] = (ptrint) npc;
+ /* read float registers */
+ /* Do not use the assignment operator '=', as the type of
+ * the _mc->fpregs[i] can cause invalid conversions. */
+
+ assert(sizeof(_mc->fpregs.fpregs) == sizeof(es->fltregs));
+ os_memcpy(&es->fltregs, &_mc->fpregs.fpregs, sizeof(_mc->fpregs.fpregs));
+#endif
+
+ vm_abort("md_executionstate_read: IMPLEMENT ME!");
}
+
+
+/* md_executionstate_write *****************************************************
+
+ Write the given executionstate back to the context.
+
+*******************************************************************************/
+
+void md_executionstate_write(executionstate_t *es, void *context)
+{
+#if 0
+ ucontext_t *_uc;
+ mcontext_t *_mc;
+ unsigned long *_gregs;
+ s4 i;
+
+ _uc = (ucontext_t *) context;
+
+ _mc = _uc->uc_mcontext.uc_regs;
+ _gregs = _mc->gregs;
+
+ /* write integer registers */
+ for (i = 0; i < INT_REG_CNT; i++)
+ _gregs[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. */
+
+ assert(sizeof(_mc->fpregs.fpregs) == sizeof(es->fltregs));
+ os_memcpy(&_mc->fpregs.fpregs, &es->fltregs, sizeof(_mc->fpregs.fpregs));
+
+ /* write special registers */
+ _gregs[PT_NIP] = (ptrint) es->pc;
+ _gregs[REG_SP] = (ptrint) es->sp;
+ _gregs[REG_PV] = (ptrint) es->pv;
+ _gregs[PT_LNK] = (ptrint) es->ra;
#endif
+ vm_abort("md_executionstate_write: IMPLEMENT ME!");
+}
+
/*
* These are local overrides for various environment variables in Emacs.
projects / cacao.git / blobdiff