/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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.
 */

// The branch list file format is generated by the inject command. The new format is:
// struct BranchListFile {
//   char magic[24] = "simpleperf:EtmBranchList";
//   uint32 version = 1;
//   uint8 compressed;  // 1 if compressed, otherwise 0
//   struct {
//      uint32 msg_size;
//      message BranchList msg;
//   } msgs[];
// };
// The old format is a single BranchList message.
//

syntax = "proto3";

package simpleperf.proto;

message BranchList {
  // Used to identify format in generated proto files.
  // Should always be "simpleperf:EtmBranchList".
  string magic = 1;
  repeated ETMBinary etm_data = 2;
  LBRData lbr_data = 3;
}

message ETMBinary {
  string path = 1;
  string build_id = 2;

  message Address {
    // vaddr in binary, instr addr before the first branch
    uint64 addr = 1;

    message Branch {
      // Each bit represents a branch: 0 for not branch, 1 for branch.
      // Bit 0 comes first, bit 7 comes last.
      bytes branch = 1;
      uint32 branch_size = 2;
      uint64 count = 3;
    }

    repeated Branch branches = 2;
  }

  repeated Address addrs = 3;

  enum BinaryType {
    ELF_FILE = 0;
    KERNEL = 1;
    KERNEL_MODULE = 2;
  }
  BinaryType type = 4;

  message KernelBinaryInfo {
    // kernel_start_addr is used to convert kernel ip address to vaddr in vmlinux.
    // If it is zero, the Address in KERNEL binary has been converted to vaddr. Otherwise,
    // the Address in KERNEL binary is still ip address, and need to be converted later.
    uint64 kernel_start_addr = 1;
  }

  KernelBinaryInfo kernel_info = 5;
}

message LBRData {
  repeated Sample samples = 1;
  repeated Binary binaries = 2;

  message Sample {
    // If binary_id >= 1, it refers to LBRData.binaries[binary_id - 1]. Otherwise, it's invalid.
    uint32 binary_id = 1;
    uint64 vaddr_in_file = 2;
    repeated Branch branches = 3;

    message Branch {
      // If from_binary_id >= 1, it refers to LBRData.binaries[from_binary_id - 1]. Otherwise, it's
      // invalid.
      uint32 from_binary_id = 1;
      // If to_binary_id >= 1, it refers to LBRData.binaries[to_binary_id - 1]. Otherwise, it's
      // invalid.
      uint32 to_binary_id = 2;
      uint64 from_vaddr_in_file = 3;
      uint64 to_vaddr_in_file = 4;
    }
  }

  message Binary {
    string path = 1;
    string build_id = 2;
  }
}