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7120448: Fix FP values for compiled frames in frame::describe

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Fix for debug method frame::describe

Reviewed-by: never, kvn
This commit is contained in:
Bertrand Delsart 2012-01-18 16:18:31 +01:00
parent b9cba282ee
commit b11b6e4dda
6 changed files with 47 additions and 16 deletions
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20
hotspot/src/cpu/x86/vm/frame_x86.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 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
@ -675,3 +675,21 @@ intptr_t *frame::initial_deoptimization_info() {
// used to reset the saved FP
return fp();
}
intptr_t* frame::real_fp() const {
if (_cb != NULL) {
// use the frame size if valid
int size = _cb->frame_size();
if ((size > 0) &&
(! is_ricochet_frame())) {
// Work-around: ricochet explicitly excluded because frame size is not
// constant for the ricochet blob but its frame_size could not, for
// some reasons, be declared as <= 0. This potentially confusing
// size declaration should be fixed as another CR.
return unextended_sp() + size;
}
}
// else rely on fp()
assert(! is_compiled_frame(), "unknown compiled frame size");
return fp();
}