PPC/s390: [unwinder] Restore callee saved registers after unwinding in arm32

Port d6c586f7

R=solanes@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: I73098589bc2246e389432be18b11bcf3242df308
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2488021Reviewed-by: Santiago Aboy Solanes <solanes@chromium.org>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#70681}

BUILD.gn

@@ -3693,6 +3693,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/deoptimizer/ppc/deoptimizer-ppc.cc",
       "src/diagnostics/ppc/disasm-ppc.cc",
       "src/diagnostics/ppc/eh-frame-ppc.cc",
+      "src/diagnostics/ppc/unwinder-ppc.cc",
       "src/execution/ppc/frame-constants-ppc.cc",
       "src/execution/ppc/frame-constants-ppc.h",
       "src/execution/ppc/simulator-ppc.cc",
@@ -3723,6 +3724,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/deoptimizer/ppc/deoptimizer-ppc.cc",
       "src/diagnostics/ppc/disasm-ppc.cc",
       "src/diagnostics/ppc/eh-frame-ppc.cc",
+      "src/diagnostics/ppc/unwinder-ppc.cc",
       "src/execution/ppc/frame-constants-ppc.cc",
       "src/execution/ppc/frame-constants-ppc.h",
       "src/execution/ppc/simulator-ppc.cc",
@@ -3753,6 +3755,7 @@ v8_source_set("v8_base_without_compiler") {
       "src/deoptimizer/s390/deoptimizer-s390.cc",
       "src/diagnostics/s390/disasm-s390.cc",
       "src/diagnostics/s390/eh-frame-s390.cc",
+      "src/diagnostics/s390/unwinder-s390.cc",
       "src/execution/s390/frame-constants-s390.cc",
       "src/execution/s390/frame-constants-s390.h",
       "src/execution/s390/simulator-s390.cc",

src/diagnostics/ppc/unwinder-ppc.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/s390/unwinder-s390.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