syntax = "proto3";

option optimize_for = LITE_RUNTIME;
option go_package = "pkg/protomodel";

package protomodel;

message MachoInfo {
  enum PointerSize {
    invalid = 0;
    p32 = 1;
    p64 = 2;
  }

  message InitPointer {
    uint64 offset = 1; // offset relative to the macho header
    uint64 value = 2;  // address of the init function
  }

  // right now we waste memory to store name/hash for all symbols
  // should consider compress them, dyld stores the index in list of LC_DYLIB
  message BindSymbol {
    string name = 1;
    string libname = 2;
    uint32 libhash = 3;
    uint32 segment = 4; // segment index
    uint64 offset = 5; // offset in segment
  }

  message SymbolTable {
    uint32 symbolIndex = 1;
    uint32 segmentIndex = 2;
    uint32 offset = 3;
  }
  message LibraryImportedSymbols {
    uint32 libIndex = 1;
    uint32 nsymbols = 2;
    repeated SymbolTable symbols = 3;
  }

  message AllImportedSymbols {
    repeated string libs = 1;
    repeated string symbols = 2;
    repeated LibraryImportedSymbols tables = 3;
  }

  message Selector {
    uint32 idx = 1;
    string name = 2;
  }

  PointerSize pointer_size = 1;
  uint64 image_base = 2;
  uint64 main = 3;
  repeated InitPointer init_pointers = 4;
  AllImportedSymbols symbols = 5;
  repeated Selector special_selectors = 6;
}