// Copyright 2015 The Crashpad Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "snapshot/win/cpu_context_win.h"

#include <string.h>

#include "base/logging.h"
#include "snapshot/cpu_context.h"

namespace crashpad {

#if defined(ARCH_CPU_64_BITS)

void InitializeX86Context(const WOW64_CONTEXT& context, CPUContextX86* out) {
  CHECK(false) << "TODO(scottmg) InitializeX86Context()";
}

void InitializeX64Context(const CONTEXT& context, CPUContextX86_64* out) {
  out->rax = context.Rax;
  out->rbx = context.Rbx;
  out->rcx = context.Rcx;
  out->rdx = context.Rdx;
  out->rdi = context.Rdi;
  out->rsi = context.Rsi;
  out->rbp = context.Rbp;
  out->rsp = context.Rsp;
  out->r8 = context.R8;
  out->r9 = context.R9;
  out->r10 = context.R10;
  out->r11 = context.R11;
  out->r12 = context.R12;
  out->r13 = context.R13;
  out->r14 = context.R14;
  out->r15 = context.R15;
  out->rip = context.Rip;
  out->rflags = context.EFlags;
  out->cs = context.SegCs;
  out->fs = context.SegFs;
  out->gs = context.SegGs;

  out->dr0 = context.Dr0;
  out->dr1 = context.Dr1;
  out->dr2 = context.Dr2;
  out->dr3 = context.Dr3;
  // DR4 and DR5 are obsolete synonyms for DR6 and DR7, see
  // http://en.wikipedia.org/wiki/X86_debug_register.
  out->dr4 = context.Dr6;
  out->dr5 = context.Dr7;
  out->dr6 = context.Dr6;
  out->dr7 = context.Dr7;

  static_assert(sizeof(out->fxsave) == sizeof(context.FltSave),
                "types must be equivalent");
  memcpy(&out->fxsave, &context.FltSave.ControlWord, sizeof(out->fxsave));
}

#else  // ARCH_CPU_64_BITS

void InitializeX86Context(const CONTEXT& context, CPUContextX86* out) {
  CHECK(false) << "TODO(scottmg) InitializeX86Context()";
}

#endif  // ARCH_CPU_64_BITS

}  // namespace crashpad