Assembler/disassembler via SPIRV-Tools.

src/xenia/gpu/spirv/spv_disassembler.cc

@@ -0,0 +1,81 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/gpu/spirv/spv_disassembler.h"
+
+#include "third_party/spirv-tools/include/libspirv/libspirv.h"
+#include "xenia/base/logging.h"
+
+namespace xe {
+namespace gpu {
+namespace spirv {
+
+SpvDisassembler::Result::Result(spv_text text, spv_diagnostic diagnostic)
+    : text_(text), diagnostic_(diagnostic) {}
+
+SpvDisassembler::Result::~Result() {
+  if (text_) {
+    spvTextDestroy(text_);
+  }
+  if (diagnostic_) {
+    spvDiagnosticDestroy(diagnostic_);
+  }
+}
+
+bool SpvDisassembler::Result::has_error() const { return !!diagnostic_; }
+
+size_t SpvDisassembler::Result::error_word_index() const {
+  return diagnostic_ ? diagnostic_->position.index : 0;
+}
+
+const char* SpvDisassembler::Result::error_string() const {
+  return diagnostic_ ? diagnostic_->error : "";
+}
+
+const char* SpvDisassembler::Result::text() const {
+  return text_ ? text_->str : "";
+}
+
+std::string SpvDisassembler::Result::to_string() const {
+  return text_ ? std::string(text_->str, text_->length) : "";
+}
+
+void SpvDisassembler::Result::AppendText(StringBuffer* target_buffer) const {
+  if (text_) {
+    target_buffer->AppendBytes(reinterpret_cast<const uint8_t*>(text_->str),
+                               text_->length);
+  }
+}
+
+SpvDisassembler::SpvDisassembler() : spv_context_(spvContextCreate()) {}
+
+SpvDisassembler::~SpvDisassembler() { spvContextDestroy(spv_context_); }
+
+std::unique_ptr<SpvDisassembler::Result> SpvDisassembler::Disassemble(
+    const uint32_t* words, size_t word_count) {
+  spv_text text = nullptr;
+  spv_diagnostic diagnostic = nullptr;
+  auto result_code =
+      spvBinaryToText(spv_context_, words, word_count,
+                      SPV_BINARY_TO_TEXT_OPTION_INDENT, &text, &diagnostic);
+  std::unique_ptr<Result> result(new Result(text, diagnostic));
+  if (result_code) {
+    XELOGE("Failed to disassemble spv: %d", result_code);
+    if (result->has_error()) {
+      return result;
+    } else {
+      return nullptr;
+    }
+  }
+  return result;
+}
+
+}  // namespace spirv
+}  // namespace gpu
+}  // namespace xe