Preparation for AArch64 support

test/cmdline.h

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+// AsmJit - Machine code generation for C++
+//
+//  * Official AsmJit Home Page: https://asmjit.com
+//  * Official Github Repository: https://github.com/asmjit/asmjit
+//
+// Copyright (c) 2008-2020 The AsmJit Authors
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would be
+//    appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//    misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+#ifndef ASMJIT_TEST_CMDLINE_H_INCLUDED
+#define ASMJIT_TEST_CMDLINE_H_INCLUDED
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+// ============================================================================
+// [CmdLine]
+// ============================================================================
+
+class CmdLine {
+public:
+  int _argc;
+  const char* const* _argv;
+
+  CmdLine(int argc, const char* const* argv)
+    : _argc(argc),
+      _argv(argv) {}
+
+  bool hasArg(const char* key) const {
+    for (int i = 1; i < _argc; i++)
+      if (strcmp(key, _argv[i]) == 0)
+        return true;
+    return false;
+  }
+
+  const char* valueOf(const char* key, const char* defaultValue) const {
+    size_t keySize = strlen(key);
+    for (int i = 1; i < _argc; i++) {
+      const char* val = _argv[i];
+      if (strlen(val) >= keySize + 1 && val[keySize] == '=' && memcmp(val, key, keySize) == 0)
+        return val + keySize + 1;
+    }
+
+    return defaultValue;
+  }
+
+  int valueAsInt(const char* key, int defaultValue) const {
+    const char* val = valueOf(key, nullptr);
+    if (val == nullptr || val[0] == '\0')
+      return defaultValue;
+
+    return atoi(val);
+  }
+
+  unsigned valueAsUInt(const char* key, unsigned defaultValue) const {
+    const char* val = valueOf(key, nullptr);
+    if (val == nullptr || val[0] == '\0')
+      return defaultValue;
+
+    int v = atoi(val);
+    if (v < 0)
+      return defaultValue;
+    else
+      return unsigned(v);
+  }
+};
+
+#endif // ASMJIT_TEST_CMDLINE_H_INCLUDED