Lines Matching defs:opcodes

213 // Rebases are communicated to dyld using a bytecode, whose opcodes cause the
424 // Encode a sequence of opcodes that tell dyld to write the address of symbol +
432                           std::vector<BindIR> &opcodes) {
436     opcodes.push_back(
443     opcodes.push_back({BIND_OPCODE_ADD_ADDR_ULEB, offset - lastBinding.offset});
448     opcodes.push_back(
453   opcodes.push_back({BIND_OPCODE_DO_BIND, 0});
458 static void optimizeOpcodes(std::vector<BindIR> &opcodes) {
462   for (i = 1; i < opcodes.size(); ++i, ++pWrite) {
463     if ((opcodes[i].opcode == BIND_OPCODE_ADD_ADDR_ULEB) &&
464         (opcodes[i - 1].opcode == BIND_OPCODE_DO_BIND)) {
465       opcodes[pWrite].opcode = BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB;
466       opcodes[pWrite].data = opcodes[i].data;
469       opcodes[pWrite] = opcodes[i - 1];
472   if (i == opcodes.size())
473     opcodes[pWrite] = opcodes[i - 1];
474   opcodes.resize(pWrite + 1);
476   // Pass 2: Compress two or more bind_add opcodes
478   for (i = 1; i < opcodes.size(); ++i, ++pWrite) {
479     if ((opcodes[i].opcode == BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB) &&
480         (opcodes[i - 1].opcode == BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB) &&
481         (opcodes[i].data == opcodes[i - 1].data)) {
482       opcodes[pWrite].opcode = BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB;
483       opcodes[pWrite].consecutiveCount = 2;
484       opcodes[pWrite].data = opcodes[i].data;
486       while (i < opcodes.size() &&
487              (opcodes[i].opcode == BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB) &&
488              (opcodes[i].data == opcodes[i - 1].data)) {
489         opcodes[pWrite].consecutiveCount++;
493       opcodes[pWrite] = opcodes[i - 1];
496   if (i == opcodes.size())
497     opcodes[pWrite] = opcodes[i - 1];
498   opcodes.resize(pWrite + 1);
505   for (auto &p : opcodes) {
591 // Organize the bindings so we can encoded them with fewer opcodes.
622 // Emit bind opcodes, which are a stream of byte-sized opcodes that dyld
634 // subsequent opcodes only need to encode the differences between bindings.
653     std::vector<BindIR> opcodes;
657                     lastBinding, opcodes);
659       optimizeOpcodes(opcodes);
660     for (const auto &op : opcodes)
687     std::vector<BindIR> opcodes;
691                     lastBinding, opcodes);
693       optimizeOpcodes(opcodes);
694     for (const auto &op : opcodes)
1017 // Unlike the non-lazy binding section, the bind opcodes in this section aren't
1018 // interpreted all at once. Rather, dyld will start interpreting opcodes at a