1 // Copyright 2020 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <memory> 6 7 #include "include/v8-unwinder-state.h" 8 #include "include/v8-unwinder.h" 9 #include "src/diagnostics/unwinder.h" 10 #include "src/execution/frame-constants.h" 11 12 namespace v8 { 13 GetCalleeSavedRegistersFromEntryFrame(void * fp,RegisterState * register_state)14void GetCalleeSavedRegistersFromEntryFrame(void* fp, 15 RegisterState* register_state) { 16 const i::Address base_addr = 17 reinterpret_cast<i::Address>(fp) + 18 i::EntryFrameConstants::kDirectCallerGeneralRegistersOffset; 19 20 if (!register_state->callee_saved) { 21 register_state->callee_saved = std::make_unique<CalleeSavedRegisters>(); 22 } 23 24 register_state->callee_saved->arm_r4 = 25 reinterpret_cast<void*>(Load(base_addr + 0 * i::kSystemPointerSize)); 26 register_state->callee_saved->arm_r5 = 27 reinterpret_cast<void*>(Load(base_addr + 1 * i::kSystemPointerSize)); 28 register_state->callee_saved->arm_r6 = 29 reinterpret_cast<void*>(Load(base_addr + 2 * i::kSystemPointerSize)); 30 register_state->callee_saved->arm_r7 = 31 reinterpret_cast<void*>(Load(base_addr + 3 * i::kSystemPointerSize)); 32 register_state->callee_saved->arm_r8 = 33 reinterpret_cast<void*>(Load(base_addr + 4 * i::kSystemPointerSize)); 34 register_state->callee_saved->arm_r9 = 35 reinterpret_cast<void*>(Load(base_addr + 5 * i::kSystemPointerSize)); 36 register_state->callee_saved->arm_r10 = 37 reinterpret_cast<void*>(Load(base_addr + 6 * i::kSystemPointerSize)); 38 } 39 40 } // namespace v8 41