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5a21de6a1b
Retrieve context and save to thread context. NtQueryInformationThread is no longer required (right now?) because to retrieve the CONTEXT, the thread needs to be Suspend/ResumeThread'd anyway, and the return value of SuspendThread is the previous SuspendCount. I haven't handle the x86 case yet -- that would ideally be via Wow64GetThreadContext (I think) but unfortunately that's Vista+, so I'll likely need to to a bit of fiddling to get that sorted out. (It's actually likely going to be NtQueryInformationThread again, but one thing at a time for now.) R=cpu@chromium.org, rsesek@chromium.org TBR=mark@chromium.org BUG=crashpad:1 Review URL: https://codereview.chromium.org/1133203002
136 lines
3.8 KiB
C++
136 lines
3.8 KiB
C++
// Copyright 2015 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "snapshot/win/thread_snapshot_win.h"
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#include "base/logging.h"
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#include "snapshot/win/process_reader_win.h"
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namespace crashpad {
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namespace internal {
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namespace {
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void InitializeX64Context(const CONTEXT& context,
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CPUContextX86_64* out) {
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out->rax = context.Rax;
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out->rbx = context.Rbx;
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out->rcx = context.Rcx;
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out->rdx = context.Rdx;
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out->rdi = context.Rdi;
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out->rsi = context.Rsi;
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out->rbp = context.Rbp;
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out->rsp = context.Rsp;
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out->r8 = context.R8;
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out->r9 = context.R9;
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out->r10 = context.R10;
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out->r11 = context.R11;
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out->r12 = context.R12;
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out->r13 = context.R13;
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out->r14 = context.R14;
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out->r15 = context.R15;
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out->rip = context.Rip;
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out->rflags = context.EFlags;
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out->cs = context.SegCs;
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out->fs = context.SegFs;
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out->gs = context.SegGs;
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out->dr0 = context.Dr0;
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out->dr1 = context.Dr1;
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out->dr2 = context.Dr2;
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out->dr3 = context.Dr3;
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// DR4 and DR5 are obsolete synonyms for DR6 and DR7, see
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// http://en.wikipedia.org/wiki/X86_debug_register.
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out->dr4 = context.Dr6;
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out->dr5 = context.Dr7;
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out->dr6 = context.Dr6;
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out->dr7 = context.Dr7;
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static_assert(sizeof(out->fxsave) == sizeof(context.FltSave),
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"types must be equivalent");
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memcpy(&out->fxsave, &context.FltSave.ControlWord, sizeof(out->fxsave));
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}
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void InitializeX86Context(const CONTEXT& context,
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CPUContextX86* out) {
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CHECK(false) << "TODO(scottmg) InitializeX86Context()";
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}
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} // namespace
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ThreadSnapshotWin::ThreadSnapshotWin()
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: ThreadSnapshot(), context_(), stack_(), thread_(), initialized_() {
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}
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ThreadSnapshotWin::~ThreadSnapshotWin() {
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}
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bool ThreadSnapshotWin::Initialize(
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ProcessReaderWin* process_reader,
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const ProcessReaderWin::Thread& process_reader_thread) {
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INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
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thread_ = process_reader_thread;
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stack_.Initialize(
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process_reader, thread_.stack_region_address, thread_.stack_region_size);
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#if defined(ARCH_CPU_X86_FAMILY)
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if (process_reader->Is64Bit()) {
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context_.architecture = kCPUArchitectureX86_64;
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context_.x86_64 = &context_union_.x86_64;
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InitializeX64Context(process_reader_thread.context, context_.x86_64);
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} else {
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context_.architecture = kCPUArchitectureX86;
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context_.x86 = &context_union_.x86;
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InitializeX86Context(process_reader_thread.context, context_.x86);
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}
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#endif
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INITIALIZATION_STATE_SET_VALID(initialized_);
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return true;
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}
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const CPUContext* ThreadSnapshotWin::Context() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return &context_;
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}
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const MemorySnapshot* ThreadSnapshotWin::Stack() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return &stack_;
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}
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uint64_t ThreadSnapshotWin::ThreadID() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.id;
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}
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int ThreadSnapshotWin::SuspendCount() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.suspend_count;
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}
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int ThreadSnapshotWin::Priority() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.priority;
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}
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uint64_t ThreadSnapshotWin::ThreadSpecificDataAddress() const {
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INITIALIZATION_STATE_DCHECK_VALID(initialized_);
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return thread_.teb;
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}
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} // namespace internal
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} // namespace crashpad
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