tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

test-Interpreter.cpp (2738B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
      2 * vim: set ts=8 sts=2 et sw=2 tw=80:
      3 * This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "gdb-tests.h"
      8 
      9 #include "vm/Stack.h"
     10 
     11 namespace js {
     12 
     13 void GDBTestInitInterpreterRegs(InterpreterRegs& regs,
     14                                js::InterpreterFrame* fp_, JS::Value* sp,
     15                                uint8_t* pc) {
     16  regs.fp_ = fp_;
     17  regs.sp = sp;
     18  regs.pc = pc;
     19 }
     20 
     21 void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
     22                                 InterpreterFrame* ptr) {
     23  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
     24  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_InterpreterFrame;
     25 }
     26 
     27 void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
     28                                 jit::BaselineFrame* ptr) {
     29  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
     30  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_BaselineFrame;
     31 }
     32 
     33 void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
     34                                 jit::RematerializedFrame* ptr) {
     35  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
     36  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_RematerializedFrame;
     37 }
     38 
     39 void GDBTestInitAbstractFramePtr(AbstractFramePtr& frame,
     40                                 wasm::DebugFrame* ptr) {
     41  MOZ_ASSERT((uintptr_t(ptr) & AbstractFramePtr::TagMask) == 0);
     42  frame.ptr_ = uintptr_t(ptr) | AbstractFramePtr::Tag_WasmDebugFrame;
     43 }
     44 
     45 }  // namespace js
     46 
     47 FRAGMENT(Interpreter, Regs) {
     48  struct FakeFrame {
     49    js::InterpreterFrame frame;
     50    JS::Value slot0;
     51    JS::Value slot1;
     52    JS::Value slot2;
     53  } fakeFrame;
     54  uint8_t fakeOpcode = uint8_t(JSOp::True);
     55 
     56  js::InterpreterRegs regs;
     57  js::GDBTestInitInterpreterRegs(regs, &fakeFrame.frame, &fakeFrame.slot2,
     58                                 &fakeOpcode);
     59 
     60  breakpoint();
     61 
     62  use(regs);
     63 }
     64 
     65 FRAGMENT(Interpreter, AbstractFramePtr) {
     66  js::AbstractFramePtr ifptr;
     67  GDBTestInitAbstractFramePtr(ifptr,
     68                              (js::InterpreterFrame*)uintptr_t(0x8badf00));
     69 
     70  js::AbstractFramePtr bfptr;
     71  GDBTestInitAbstractFramePtr(bfptr,
     72                              (js::jit::BaselineFrame*)uintptr_t(0xbadcafe0));
     73 
     74  js::AbstractFramePtr rfptr;
     75  GDBTestInitAbstractFramePtr(
     76      rfptr, (js::jit::RematerializedFrame*)uintptr_t(0xdabbad00));
     77 
     78  js::AbstractFramePtr sfptr;
     79  GDBTestInitAbstractFramePtr(sfptr,
     80                              (js::wasm::DebugFrame*)uintptr_t(0xcb98ad00));
     81 
     82  breakpoint();
     83 
     84  use(ifptr);
     85  use(bfptr);
     86  use(rfptr);
     87  use(sfptr);
     88 }