1 files changed, 88 insertions, 0 deletions
diff --git a/js/src/gdb/tests/test-Interpreter.cpp b/js/src/gdb/tests/test-Interpreter.cpp
new file mode 100644
index 0000000000..cc844d59a0
--- /dev/null
+++ b/js/src/gdb/tests/test-Interpreter.cpp
@@ -0,0 +1,88 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gdb-tests.h"
+
+#include "vm/Stack.h"
+
+namespace js {
+
+void GDBTestInitInterpreterRegs(InterpreterRegs& regs,
+                                js::InterpreterFrame* fp_, JS::Value* sp,
+                                uint8_t* pc) {
+  regs.fp_ = fp_;
+  regs.sp = sp;
+  regs.pc = pc;
+}
+
+void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
+                                 InterpreterFrame* ptr) {
+  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
+  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_InterpreterFrame;
+}
+
+void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
+                                 jit::BaselineFrame* ptr) {
+  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
+  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_BaselineFrame;
+}
+
+void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
+                                 jit::RematerializedFrame* ptr) {
+  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
+  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_RematerializedFrame;
+}
+
+void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
+                                 wasm::DebugFrame* ptr) {
+  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
+  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_WasmDebugFrame;
+}
+
+}  // namespace js
+
+FRAGMENT(Interpreter, Regs) {
+  struct FakeFrame {
+    js::InterpreterFrame frame;
+    JS::Value slot0;
+    JS::Value slot1;
+    JS::Value slot2;
+  } fakeFrame;
+  uint8_t fakeOpcode = uint8_t(JSOp::True);
+
+  js::InterpreterRegs regs;
+  js::GDBTestInitInterpreterRegs(regs, &fakeFrame.frame, &fakeFrame.slot2,
+                                 &fakeOpcode);
+
+  breakpoint();
+
+  use(regs);
+}
+
+FRAGMENT(Interpreter, AbstractFramePtr) {
+  js::AbstractFramePtr ifptr;
+  GDBTestInitAbstractFramePtr(ifptr,
+                              (js::InterpreterFrame*)uintptr_t(0x8badf00));
+
+  js::AbstractFramePtr bfptr;
+  GDBTestInitAbstractFramePtr(bfptr,
+                              (js::jit::BaselineFrame*)uintptr_t(0xbadcafe0));
+
+  js::AbstractFramePtr rfptr;
+  GDBTestInitAbstractFramePtr(
+      rfptr, (js::jit::RematerializedFrame*)uintptr_t(0xdabbad00));
+
+  js::AbstractFramePtr sfptr;
+  GDBTestInitAbstractFramePtr(sfptr,
+                              (js::wasm::DebugFrame*)uintptr_t(0xcb98ad00));
+
+  breakpoint();
+
+  use(ifptr);
+  use(bfptr);
+  use(rfptr);
+  use(sfptr);
+}