--- a/hotspot/src/share/vm/opto/chaitin.cpp Thu Feb 16 11:33:49 2012 -0800
+++ b/hotspot/src/share/vm/opto/chaitin.cpp Thu Feb 16 17:12:49 2012 -0800
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -1946,18 +1946,29 @@
reg2offset_unchecked(OptoReg::add(_matcher._old_SP,-1)) - reg2offset_unchecked(_matcher._new_SP)+jintSize);
// Preserve area dump
+ int fixed_slots = C->fixed_slots();
+ OptoReg::Name begin_in_preserve = OptoReg::add(_matcher._old_SP, -(int)C->in_preserve_stack_slots());
+ OptoReg::Name return_addr = _matcher.return_addr();
+
reg = OptoReg::add(reg, -1);
- while( OptoReg::is_stack(reg)) {
+ while (OptoReg::is_stack(reg)) {
tty->print("#r%3.3d %s+%2d: ",reg,fp,reg2offset_unchecked(reg));
- if( _matcher.return_addr() == reg )
+ if (return_addr == reg) {
tty->print_cr("return address");
- else if( _matcher.return_addr() == OptoReg::add(reg,1) &&
- VerifyStackAtCalls )
- tty->print_cr("0xBADB100D +VerifyStackAtCalls");
- else if ((int)OptoReg::reg2stack(reg) < C->fixed_slots())
+ } else if (reg >= begin_in_preserve) {
+ // Preserved slots are present on x86
+ if (return_addr == OptoReg::add(reg, VMRegImpl::slots_per_word))
+ tty->print_cr("saved fp register");
+ else if (return_addr == OptoReg::add(reg, 2*VMRegImpl::slots_per_word) &&
+ VerifyStackAtCalls)
+ tty->print_cr("0xBADB100D +VerifyStackAtCalls");
+ else
+ tty->print_cr("in_preserve");
+ } else if ((int)OptoReg::reg2stack(reg) < fixed_slots) {
tty->print_cr("Fixed slot %d", OptoReg::reg2stack(reg));
- else
- tty->print_cr("pad2, in_preserve");
+ } else {
+ tty->print_cr("pad2, stack alignment");
+ }
reg = OptoReg::add(reg, -1);
}