[mips][unwinder] Restore callee saved registers after unwinding

Port d6c586f7
https://chromium-review.googlesource.com/c/v8/v8/+/2472000

Change-Id: I1dce1dcdcc80897371c122aa73ef8fc290e923ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2491600Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#70699}

BUILD.gn

@@ -3636,6 +3636,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/debug/mips/debug-mips.cc",
       "src/deoptimizer/mips/deoptimizer-mips.cc",
       "src/diagnostics/mips/disasm-mips.cc",
+      "src/diagnostics/mips/unwinder-mips.cc",
       "src/execution/mips/frame-constants-mips.cc",
       "src/execution/mips/frame-constants-mips.h",
       "src/execution/mips/simulator-mips.cc",
@@ -3663,6 +3664,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/debug/mips64/debug-mips64.cc",
       "src/deoptimizer/mips64/deoptimizer-mips64.cc",
       "src/diagnostics/mips64/disasm-mips64.cc",
+      "src/diagnostics/mips64/unwinder-mips64.cc",
       "src/execution/mips64/frame-constants-mips64.cc",
       "src/execution/mips64/frame-constants-mips64.h",
       "src/execution/mips64/simulator-mips64.cc",

src/diagnostics/mips/unwinder-mips.cc

+// Copyright 2020 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/diagnostics/unwinder.h"
+
+namespace v8 {
+
+void GetCalleeSavedRegistersFromEntryFrame(void* fp,
+                                           RegisterState* register_state) {}
+
+}  // namespace v8

src/diagnostics/mips64/unwinder-mips64.cc

+// Copyright 2020 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/diagnostics/unwinder.h"
+
+namespace v8 {
+
+void GetCalleeSavedRegistersFromEntryFrame(void* fp,
+                                           RegisterState* register_state) {}
+
+}  // namespace v8