| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef RUNTIME_VM_STACK_FRAME_X64_H_ |
| #define RUNTIME_VM_STACK_FRAME_X64_H_ |
| |
| #if !defined(RUNTIME_VM_STACK_FRAME_H_) |
| #error Do not include stack_frame_x64.h directly; use stack_frame.h instead. |
| #endif |
| |
| #include "vm/constants.h" |
| |
| namespace dart { |
| |
| /* X64 Dart Frame Layout |
| |
| | | <- TOS |
| Callee frame | ... | |
| | saved PP | |
| | code object | |
| | saved RBP | (RBP of current frame) |
| | saved PC | (PC of current frame) |
| +--------------------+ |
| Current frame | ... T| <- RSP of current frame |
| | first local T| |
| | caller's PP T| |
| | code object T| (current frame's code object) |
| | caller's RBP | <- RBP of current frame |
| | caller's ret addr | (PC of caller frame) |
| +--------------------+ |
| Caller frame | last parameter | <- RSP of caller frame |
| | ... | |
| |
| T against a slot indicates it needs to be traversed during GC. |
| */ |
| |
| static constexpr int kDartFrameFixedSize = 4; // PC marker, RBP, PP, PC. |
| static constexpr int kSavedPcSlotFromSp = -1; |
| |
| static constexpr int kFirstObjectSlotFromFp = |
| -1; // Used by GC to traverse stack. |
| static constexpr int kLastFixedObjectSlotFromFp = -2; |
| |
| static constexpr int kFirstLocalSlotFromFp = -3; |
| static constexpr int kSavedCallerPpSlotFromFp = -2; |
| static constexpr int kPcMarkerSlotFromFp = -1; |
| static constexpr int kSavedCallerFpSlotFromFp = 0; |
| static constexpr int kSavedCallerPcSlotFromFp = 1; |
| |
| static constexpr int kParamEndSlotFromFp = 1; // One slot past last parameter. |
| static constexpr int kCallerSpSlotFromFp = 2; |
| static constexpr int kLastParamSlotFromEntrySp = 1; // Skip return address. |
| |
| // Entry and exit frame layout. |
| #if defined(DART_TARGET_OS_WINDOWS) |
| static constexpr int kExitLinkSlotFromEntryFp = -33; |
| #else |
| static constexpr int kExitLinkSlotFromEntryFp = -11; |
| #endif // defined(DART_TARGET_OS_WINDOWS) |
| |
| // For FFI native -> Dart callbacks, the number of stack slots between arguments |
| // passed on stack and arguments saved in callback prologue. 2 = return address |
| // (1) + saved frame pointer (1). Also add slots for the shadow space, if |
| // present. |
| // |
| // If NativeCallbackTrampolines::Enabled(), then |
| // kNativeCallbackTrampolineStackDelta must be added as well. |
| constexpr intptr_t kCallbackSlotsBeforeSavedArguments = |
| 2 + CallingConventions::kShadowSpaceBytes / kWordSize; |
| |
| // For FFI calls passing in TypedData, we save it on the stack before entering |
| // a Dart frame. This denotes how to get to the backed up typed data. |
| static constexpr int kFfiCallerTypedDataSlotFromFp = kCallerSpSlotFromFp; |
| |
| } // namespace dart |
| |
| #endif // RUNTIME_VM_STACK_FRAME_X64_H_ |