/* src/vm/jit/x86_64/linux/md-os.c - machine dependent x86_64 Linux functions
- Copyright (C) 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) 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
#include "vm/types.h"
#include "vm/jit/x86_64/codegen.h"
+#include "vm/jit/x86_64/md.h"
-#if defined(ENABLE_THREADS)
-# include "threads/native/threads.h"
-#endif
+#include "threads/thread.h"
-#include "vm/exceptions.h"
+#include "vm/builtin.h"
#include "vm/signallocal.h"
#include "vm/jit/asmpart.h"
+#include "vm/jit/executionstate.h"
+#include "vm/jit/trap.h"
#include "vm/jit/stacktrace.h"
{
ucontext_t *_uc;
mcontext_t *_mc;
+ void *pv;
u1 *sp;
u1 *ra;
u1 *xpc;
int type;
intptr_t val;
void *p;
- java_handle_t *o;
+ java_object_t *o;
_uc = (ucontext_t *) _p;
_mc = &_uc->uc_mcontext;
/* ATTENTION: Don't use CACAO's internal REG_* defines as they are
different to the ones in <ucontext.h>. */
+ pv = NULL; /* is resolved during stackframeinfo creation */
sp = (u1 *) _mc->gregs[REG_RSP];
xpc = (u1 *) _mc->gregs[REG_RIP];
- ra = xpc; /* return address is equal to xpc */
+ ra = xpc; /* return address is equal to XPC */
#if 0
/* check for StackOverflowException */
val = _mc->gregs[d];
- if (type == EXCEPTION_HARDWARE_COMPILER) {
+ if (type == TRAP_COMPILER) {
+ /* The PV from the compiler stub is equal to the XPC. */
+
+ pv = xpc;
+
/* We use a framesize of zero here because the call pushed
the return addres onto the stack. */
ra = md_stacktrace_get_returnaddress(sp, 0);
- /* And remove the RA from the stack. */
+ /* Skip the RA on the stack. */
sp = sp + 1 * SIZEOF_VOID_P;
+
+ /* The XPC is the RA minus 1, because the RA points to the
+ instruction after the call. */
+
+ xpc = ra - 3;
}
}
else {
/* this was a normal NPE */
- type = EXCEPTION_HARDWARE_NULLPOINTER;
+ type = TRAP_NullPointerException;
val = 0;
}
- /* Handle the type. */
+ /* Handle the trap. */
- p = signal_handle(type, val, NULL, sp, ra, xpc, _p);
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
/* Set registers. */
- if (type == EXCEPTION_HARDWARE_COMPILER) {
+ if (type == TRAP_COMPILER) {
if (p == NULL) {
- o = exceptions_get_and_clear_exception();
-
- ra = ra - 3; /* XPC is before the actual call */
+ o = builtin_retrieve_exception();
_mc->gregs[REG_RSP] = (uintptr_t) sp; /* Remove RA from stack. */
_mc->gregs[REG_RAX] = (uintptr_t) o;
- _mc->gregs[REG_R10] = (uintptr_t) ra; /* REG_ITMP2_XPC */
+ _mc->gregs[REG_R10] = (uintptr_t) xpc; /* REG_ITMP2_XPC */
_mc->gregs[REG_RIP] = (uintptr_t) asm_handle_exception;
}
else {
xpc = (u1 *) _mc->gregs[REG_RIP];
ra = xpc; /* return address is equal to xpc */
- /* this is an ArithmeticException */
+ /* This is an ArithmeticException. */
- type = EXCEPTION_HARDWARE_ARITHMETIC;
+ type = TRAP_ArithmeticException;
val = 0;
- /* Handle the type. */
+ /* Handle the trap. */
- p = signal_handle(type, val, pv, sp, ra, xpc, _p);
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
/* set registers */
/* This is a patcher. */
- type = EXCEPTION_HARDWARE_PATCHER;
+ type = TRAP_PATCHER;
val = 0;
- /* Handle the type. */
+ /* Handle the trap. */
- p = signal_handle(type, val, pv, sp, ra, xpc, _p);
+ p = trap_handle(type, val, pv, sp, ra, xpc, _p);
/* set registers */
#endif
-/* md_replace_executionstate_read **********************************************
+/* md_executionstate_read ******************************************************
- Read the given context into an executionstate for Replacement.
+ Read the given context into an executionstate.
*******************************************************************************/
-#if defined(ENABLE_REPLACEMENT)
-void md_replace_executionstate_read(executionstate_t *es, void *context)
+void md_executionstate_read(executionstate_t *es, void *context)
{
ucontext_t *_uc;
mcontext_t *_mc;
_mc = &_uc->uc_mcontext;
/* read special registers */
- es->pc = (u1 *) _mc->gregs[REG_RSP];
+ es->pc = (u1 *) _mc->gregs[REG_RIP];
es->sp = (u1 *) _mc->gregs[REG_RSP];
es->pv = NULL;
for (i = 0; i < FLT_REG_CNT; i++)
es->fltregs[i] = 0xdeadbeefdeadbeefL;
}
-#endif
-/* md_replace_executionstate_write *********************************************
+/* md_executionstate_write *****************************************************
- Write the given executionstate back to the context for Replacement.
+ Write the given executionstate back to the context.
*******************************************************************************/
-#if defined(ENABLE_REPLACEMENT)
-void md_replace_executionstate_write(executionstate_t *es, void *context)
+void md_executionstate_write(executionstate_t *es, void *context)
{
ucontext_t *_uc;
mcontext_t *_mc;
_mc->gregs[REG_RIP] = (ptrint) es->pc;
_mc->gregs[REG_RSP] = (ptrint) es->sp;
}
-#endif
-
-
-/* md_critical_section_restart *************************************************
-
- Search the critical sections tree for a matching section and set
- the PC to the restart point, if necessary.
-
-*******************************************************************************/
-
-#if defined(ENABLE_THREADS)
-void md_critical_section_restart(ucontext_t *_uc)
-{
- mcontext_t *_mc;
- u1 *pc;
- u1 *npc;
-
- _mc = &_uc->uc_mcontext;
-
- /* ATTENTION: Don't use CACAO's internal REG_* defines as they are
- different to the ones in <ucontext.h>. */
-
- pc = (u1 *) _mc->gregs[REG_RIP];
-
- npc = critical_find_restart_point(pc);
-
- if (npc != NULL)
- _mc->gregs[REG_RIP] = (ptrint) npc;
-}
-#endif
/*
projects / cacao.git / blobdiff