From e0f694a069f12f70d3b113f32a19dc3aa6e3e646 Mon Sep 17 00:00:00 2001
From: Wolfgang Thaller <wolfgang.thaller@gmx.net>
Date: Fri, 13 Apr 2012 20:43:27 +0200
Subject: [PATCH] asm postprocessing filter

---
 ASFilter/CMakeLists.txt |   9 ++++
 ASFilter/asfilter.cc    | 103 ++++++++++++++++++++++++++++++++++++++++
 CMakeLists.txt          |   1 +
 3 files changed, 113 insertions(+)
 create mode 100644 ASFilter/CMakeLists.txt
 create mode 100644 ASFilter/asfilter.cc

diff --git a/ASFilter/CMakeLists.txt b/ASFilter/CMakeLists.txt
new file mode 100644
index 0000000000..0b43d1efe8
--- /dev/null
+++ b/ASFilter/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 2.8)
+
+set(CMAKE_CXX_FLAGS "--std=c++0x")
+find_package(Boost COMPONENTS regex)
+
+add_executable(asfilter asfilter.cc)
+target_link_libraries(asfilter ${Boost_LIBRARIES})
+
+install(TARGETS asfilter RUNTIME DESTINATION bin)
diff --git a/ASFilter/asfilter.cc b/ASFilter/asfilter.cc
new file mode 100644
index 0000000000..c1da521fcd
--- /dev/null
+++ b/ASFilter/asfilter.cc
@@ -0,0 +1,103 @@
+#include <iostream>
+#include <unistd.h>
+#include <algorithm>
+#include <vector>
+#include <string>
+#include <functional>
+#include <errno.h>
+#include <fstream>
+#include <boost/regex.hpp>
+
+using namespace std::placeholders;
+
+int main(int argc, char *argv[])
+{
+	std::vector<std::string> argv2;
+	std::vector<const char*> argv3;
+	
+	std::copy(argv, argv+argc, std::back_inserter(argv2));
+	argv2[0] += ".real";
+	
+	std::string inputFileName;
+	std::string tempFileName;
+	
+	char tempFileTemplate[] = "/tmp/filteredXXXXXX.s";
+	int fd = mkstemps(tempFileTemplate, 2);
+	tempFileName = tempFileTemplate;
+	
+	for(auto& p : argv2)
+	{
+		if(p.substr(p.length()-2) == ".s")
+		{
+			inputFileName = p;
+			p = tempFileName;
+			std::cerr << "Temp file: " << tempFileName << std::endl;
+		}
+	}
+	
+	{
+		std::ifstream in(inputFileName);
+		std::ofstream out(tempFileName);
+		
+		std::string wordS = "[0-9a-f][0-9a-f][0-9a-f][0-9a-f]";
+		boost::regex jsr("\tjsr __magic_inline_(" + wordS + "(_" + wordS + ")*)");
+		boost::regex word(wordS);
+		//boost::regex size("\t\\.size\t([a-zA-Z0-9_]+), \\.-([a-zA-Z0-9_]+)");
+		boost::regex globl("\t\\.globl\t([a-zA-Z0-9_]+)");
+		boost::regex rts("\trts");
+		
+		std::string function_name = "__unknown";
+		while(in)
+		{
+			std::string line;
+			std::getline(in, line);
+			if(!in)
+				break;
+			
+			boost::smatch match;
+			if(boost::regex_match(line, match, jsr))
+			{
+				const boost::sregex_token_iterator end;
+				for (boost::sregex_token_iterator p(line.cbegin(), line.cend(), word);
+					p != end;
+					++p)
+				{
+					out << "\tdc.w 0x" << *p << std::endl;
+				}
+			}
+			/*else if(boost::regex_match(line, match, size) && match[1] == match[2])
+			{
+				out << "\tdc.b 0x8e\n";
+				out << "\t.string \"" << match[1] << "\"\n";
+				out << "\t.align 2\n";
+				out << line << std::endl;
+			}*/
+			else if(boost::regex_match(line, match, globl))
+			{
+				out << line << std::endl;
+				function_name = match[1];
+			}
+			/*else if(boost::regex_match(line, rts))
+			{
+				out << line << std::endl;
+				out << "\tdc.b 0x8e\n";
+				out << "\t.string \"" << function_name << "\"\n";
+				out << "\tdc.b 0x00\n";
+				out << "\tdc.b 0x00\n";				
+				out << "\t.align 2\n";
+			}*/
+			else
+				out << line << std::endl;
+		}
+	}
+	
+	close(fd);
+	
+	std::transform(argv2.begin(), argv2.end(), std::back_inserter(argv3), std::bind(&std::string::c_str, _1));
+	argv3.push_back(NULL);
+	
+	execvp(argv3[0], const_cast<char*const*>( argv3.data() ));
+	perror("execvp");
+	
+	return 1;
+}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1824985378..3c8e737263 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,4 +7,5 @@ add_subdirectory(App2)
 add_subdirectory(Raytracer)
 else()
 add_subdirectory(MakeAPPL)
+add_subdirectory(ASFilter)
 endif()