A new debugger.

Lots of bugs/rough edges/etc - issues will be filed.
Old-style debugging still works (just use --emit_source_annotations to get
the helpful movs back and --break_on_instruction will still fire).

src/xenia/base/x64_context.cc

@@ -0,0 +1,63 @@
+/**
+ ******************************************************************************
+ * 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/base/x64_context.h"
+
+#include "xenia/base/assert.h"
+#include "xenia/base/string_util.h"
+
+namespace xe {
+
+// NOTE: this order matches 1:1 with the X64Register enum.
+static const char* kRegisterNames[] = {
+    "rip",   "eflags", "rax",   "rcx",   "rdx",   "rbx",   "rsp",
+    "rbp",   "rsi",    "rdi",   "r8",    "r9",    "r10",   "r11",
+    "r12",   "r13",    "r14",   "r15",   "xmm0",  "xmm1",  "xmm2",
+    "xmm3",  "xmm4",   "xmm5",  "xmm6",  "xmm7",  "xmm8",  "xmm9",
+    "xmm10", "xmm11",  "xmm12", "xmm13", "xmm14", "xmm15",
+};
+
+const char* X64Context::GetRegisterName(X64Register reg) {
+  return kRegisterNames[static_cast<int>(reg)];
+}
+
+std::string X64Context::GetStringFromValue(X64Register reg, bool hex) const {
+  switch (reg) {
+    case X64Register::kRip:
+      return hex ? string_util::to_hex_string(rip) : std::to_string(rip);
+    case X64Register::kEflags:
+      return hex ? string_util::to_hex_string(eflags) : std::to_string(eflags);
+    default:
+      if (static_cast<int>(reg) >= static_cast<int>(X64Register::kRax) &&
+          static_cast<int>(reg) <= static_cast<int>(X64Register::kR15)) {
+        auto value = int_registers[static_cast<int>(reg) -
+                                   static_cast<int>(X64Register::kRax)];
+        return hex ? string_util::to_hex_string(value) : std::to_string(value);
+      } else if (static_cast<int>(reg) >=
+                     static_cast<int>(X64Register::kXmm0) &&
+                 static_cast<int>(reg) <=
+                     static_cast<int>(X64Register::kXmm15)) {
+        auto value = xmm_registers[static_cast<int>(reg) -
+                                   static_cast<int>(X64Register::kXmm0)];
+        return hex ? string_util::to_hex_string(value)
+                   : string_util::to_string(value);
+      } else {
+        assert_unhandled_case(reg);
+        return "";
+      }
+  }
+}
+
+void X64Context::SetValueFromString(X64Register reg, std::string value,
+                                    bool hex) {
+  // TODO(benvanik): set value from string.
+  assert_always(false);
+}
+
+}  // namespace xe