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0633041729
Closes https://github.com/dart-lang/sdk/pull/50786 TEST=ci GitOrigin-RevId: 781a38e2925ba505f0223ecd578faa9be8e1485c Change-Id: Ia3c615012d1bac3f0cf64dc01c2ceb40d50d1193 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/276684 Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Martin Kustermann <kustermann@google.com>
78 lines
2.9 KiB
C++
78 lines
2.9 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_X64_H_
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#define RUNTIME_VM_STACK_FRAME_X64_H_
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#if !defined(RUNTIME_VM_STACK_FRAME_H_)
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#error Do not include stack_frame_x64.h directly; use stack_frame.h instead.
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#endif
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#include "vm/constants.h"
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namespace dart {
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/* X64 Dart Frame Layout
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| | <- TOS
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Callee frame | ... |
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| saved PP |
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| code object |
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| saved RBP | (RBP of current frame)
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| saved PC | (PC of current frame)
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+--------------------+
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Current frame | ... T| <- RSP of current frame
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| first local T|
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| caller's PP T|
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| code object T| (current frame's code object)
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| caller's RBP | <- RBP 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 | <- RSP 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 = 4; // PC marker, RBP, PP, 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 kLastFixedObjectSlotFromFp = -2;
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static const int kFirstLocalSlotFromFp = -3;
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static const int kSavedCallerPpSlotFromFp = -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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static const int kLastParamSlotFromEntrySp = 1; // Skip return address.
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// Entry and exit frame layout.
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#if defined(DART_TARGET_OS_WINDOWS)
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static const int kExitLinkSlotFromEntryFp = -33;
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#else
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static const int kExitLinkSlotFromEntryFp = -11;
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#endif // defined(DART_TARGET_OS_WINDOWS)
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// For FFI native -> Dart callbacks, the number of stack slots between arguments
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// passed on stack and arguments saved in callback prologue. 2 = return address
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// (1) + saved frame pointer (1). Also add slots for the shadow space, if
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// present.
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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 =
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2 + CallingConventions::kShadowSpaceBytes / kWordSize;
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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 const int kFfiCallerTypedDataSlotFromFp = kCallerSpSlotFromFp;
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} // namespace dart
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#endif // RUNTIME_VM_STACK_FRAME_X64_H_
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