Florian Schneider
bac82e2592
Instead of calling code object directly, call indirectly and pass the code object in a register. The object pool is then loaded from the code object. This is another preparation step for making generated code relocatable. All non-ia32 platforms: No entry patching. ARM: PC marker (now code object) moves to the same place as on x64 (below saved PP, above saved FP). R9 is now used as PP, R10 as CODE_REG. BUG= R=koda@google.com, rmacnak@google.com Committed: https://github.com/dart-lang/sdk/commit/1d343e5a7b75168fb6c9f86b64c55173cdbdc9b2 Review URL: https://codereview.chromium.org//1192103004 .
50 lines
1.8 KiB
C++
50 lines
1.8 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_STACK_FRAME_IA32_H_
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#define VM_STACK_FRAME_IA32_H_
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namespace dart {
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/* IA32 Dart Frame Layout
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| | <- TOS
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Callee frame | ... |
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| saved EBP | (EBP of current frame)
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| saved PC | (PC of current frame)
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+--------------------+
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Current frame | ... T| <- ESP of current frame
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| first local T|
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| code object T| (current frame's code object)
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| caller's EBP | <- EBP of current frame
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| caller's ret addr | (PC of caller frame)
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+--------------------+
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Caller frame | last parameter | <- ESP of caller frame
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| ... |
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T against a slot indicates it needs to be traversed during GC.
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*/
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static const int kDartFrameFixedSize = 3; // PC marker, EBP, PC.
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static const int kSavedPcSlotFromSp = -1;
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static const int kFirstObjectSlotFromFp = -1; // Used by GC to traverse stack.
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static const int kFirstLocalSlotFromFp = -2;
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static const int kPcMarkerSlotFromFp = -1;
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static const int kSavedCallerFpSlotFromFp = 0;
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static const int kSavedCallerPcSlotFromFp = 1;
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static const int kParamEndSlotFromFp = 1; // One slot past last parameter.
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static const int kCallerSpSlotFromFp = 2;
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// No pool pointer on IA32 (indicated by aliasing saved fp).
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static const int kSavedCallerPpSlotFromFp = kSavedCallerFpSlotFromFp;
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// Entry and exit frame layout.
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static const int kExitLinkSlotFromEntryFp = -7;
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} // namespace dart
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#endif // VM_STACK_FRAME_IA32_H_
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