Squashed 'external/xbyak/' content from commit 9d8ff37

git-subtree-dir: external/xbyak
git-subtree-split: 9d8ff37306f39c6a71cf998078cbe880ce5dc224

test/normalize_prefix.cpp

@@ -0,0 +1,56 @@
+/*
+	normalize prefix
+*/
+#include <string>
+#include <set>
+#include <iostream>
+#include <memory.h>
+
+typedef unsigned char uint8_t;
+
+std::string normalize(std::string line)
+{
+	size_t pos = line.find('(');
+	/* nasm generates byte codes containing () for xbegin, so remove it. */
+	if (pos != std::string::npos) {
+		line.erase(pos, 1);
+		pos = line.find(')');
+		if (pos == std::string::npos) {
+			fprintf(stderr, "line error {%s}\n", line.c_str());
+			return "";
+		}
+		line.erase(pos, 1);
+	}
+	static const char tbl[][3] = { "66", "67", "F2", "F3" };
+	size_t tblNum = sizeof(tbl) / sizeof(tbl[0]);
+	typedef std::set<std::string> StringSet;
+	StringSet suf;
+
+	pos = 0;
+	for (; pos < line.size(); pos += 2) {
+		bool found = false;
+		for (size_t i = 0; i < tblNum; i++) {
+			if (::memcmp(&line[pos], tbl[i], 2) == 0) {
+				found = true;
+				suf.insert(tbl[i]);
+				break;
+			}
+		}
+		if (!found) break;
+	}
+	std::string ret;
+	for (StringSet::const_iterator i = suf.begin(), e = suf.end(); i != e; ++i) {
+		ret += *i;
+	}
+	ret += &line[pos];
+	return ret;
+}
+
+int main()
+{
+	std::string line;
+	while (std::getline(std::cin, line)) {
+		std::string normalizedLine = normalize(line);
+		std::cout << normalizedLine << '\n';//std::endl;
+	}
+}