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2bfecc160b
TEST=build Change-Id: I2dd8ae69764af27f480a19995b491e98f52476ae Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/293902 Reviewed-by: Liam Appelbe <liama@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
68 lines
2.6 KiB
C++
68 lines
2.6 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 RUNTIME_VM_STACK_FRAME_IA32_H_
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#define RUNTIME_VM_STACK_FRAME_IA32_H_
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#if !defined(RUNTIME_VM_STACK_FRAME_H_)
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#error Do not include stack_frame_ia32.h directly; use stack_frame.h instead.
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#endif
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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 constexpr int kDartFrameFixedSize = 3; // PC marker, EBP, PC.
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static constexpr int kSavedPcSlotFromSp = -1;
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static constexpr int kFirstObjectSlotFromFp =
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-1; // Used by GC to traverse stack.
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static constexpr int kLastFixedObjectSlotFromFp = -1;
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static constexpr int kFirstLocalSlotFromFp = -2;
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static constexpr int kPcMarkerSlotFromFp = -1;
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static constexpr int kSavedCallerFpSlotFromFp = 0;
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static constexpr int kSavedCallerPcSlotFromFp = 1;
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static constexpr int kParamEndSlotFromFp = 1; // One slot past last parameter.
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static constexpr int kCallerSpSlotFromFp = 2;
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static constexpr int kLastParamSlotFromEntrySp = 1; // Skip return address.
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// No pool pointer on IA32 (indicated by aliasing saved fp).
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static constexpr int kSavedCallerPpSlotFromFp = kSavedCallerFpSlotFromFp;
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// Entry and exit frame layout.
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static constexpr int kExitLinkSlotFromEntryFp = -8;
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// All arguments are passed on the stack, so none need to be saved. Therefore
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// there is no frame for holding the saved arguments.
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//
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// If NativeCallbackTrampolines::Enabled(), then
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// kNativeCallbackTrampolineStackDelta must be added as well.
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constexpr intptr_t kCallbackSlotsBeforeSavedArguments = 0;
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// For FFI calls passing in TypedData, we save it on the stack before entering
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// a Dart frame. This denotes how to get to the backed up typed data.
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static constexpr int kFfiCallerTypedDataSlotFromFp = kCallerSpSlotFromFp;
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} // namespace dart
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#endif // RUNTIME_VM_STACK_FRAME_IA32_H_
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