From 3350c34a74844e21ea69077e01efff3bae64bdcd Mon Sep 17 00:00:00 2001 From: Kartik Agaram Date: Tue, 23 Mar 2021 17:31:08 -0700 Subject: . --- html/linux/bootstrap/040tests.cc.html | 157 ++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 html/linux/bootstrap/040tests.cc.html (limited to 'html/linux/bootstrap/040tests.cc.html') diff --git a/html/linux/bootstrap/040tests.cc.html b/html/linux/bootstrap/040tests.cc.html new file mode 100644 index 00000000..a229a522 --- /dev/null +++ b/html/linux/bootstrap/040tests.cc.html @@ -0,0 +1,157 @@ + + + + +Mu - linux/bootstrap/040tests.cc + + + + + + + + + + +https://github.com/akkartik/mu/blob/main/linux/bootstrap/040tests.cc +
+ 1 //: Automatically aggregate functions starting with 'test-' into a test suite
+ 2 //: called 'run-tests'. Running this function will run all tests.
+ 3 //:
+ 4 //: This is actually SubX's first (trivial) compiler. We generate all the code
+ 5 //: needed for the 'run-tests' function.
+ 6 //:
+ 7 //: By convention, temporary functions needed by tests will start with
+ 8 //: '_test-'.
+ 9 
+10 //: We don't rely on any transforms running in previous layers, but this layer
+11 //: knows about labels and will emit labels for previous layers to transform.
+12 :(after "Begin Transforms")
+13 Transform.push_back(create_test_function);
+14 
+15 :(code)
+16 void test_run_test() {
+17   Mem.push_back(vma(0xbd000000));  // manually allocate memory
+18   Reg[ESP].u = 0xbd000100;
+19   run(
+20       "== code 0x1\n"  // code segment
+21       "main:\n"
+22       "  e8/call run-tests/disp32\n"  // 5 bytes
+23       "  f4/halt\n"                   // 1 byte
+24       "test-foo:\n"  // offset 7
+25       "  01 d8\n"  // just some unique instruction: add EBX to EAX
+26       "  c3/return\n"
+27   );
+28   // check that code in test-foo ran (implicitly called by run-tests)
+29   CHECK_TRACE_CONTENTS(
+30       "run: 0x00000007 opcode: 01\n"
+31   );
+32 }
+33 
+34 void create_test_function(program& p) {
+35   if (p.segments.empty()) return;
+36   segment& code = *find(p, "code");
+37   trace(3, "transform") << "-- create 'run-tests'" << end();
+38   vector<line> new_insts;
+39   for (int i = 0;  i < SIZE(code.lines);  ++i) {
+40     line& inst = code.lines.at(i);
+41     for (int j = 0;  j < SIZE(inst.words);  ++j) {
+42       const word& curr = inst.words.at(j);
+43       if (*curr.data.rbegin() != ':') continue;  // not a label
+44       if (!starts_with(curr.data, "test-")) continue;
+45       string fn = drop_last(curr.data);
+46       new_insts.push_back(call(fn));
+47     }
+48   }
+49   if (new_insts.empty()) return;  // no tests found
+50   code.lines.push_back(label("run-tests"));
+51   code.lines.insert(code.lines.end(), new_insts.begin(), new_insts.end());
+52   code.lines.push_back(ret());
+53 }
+54 
+55 string to_string(const segment& s) {
+56   ostringstream out;
+57   for (int i = 0;  i < SIZE(s.lines);  ++i) {
+58     const line& l = s.lines.at(i);
+59     for (int j = 0;  j < SIZE(l.words);  ++j) {
+60       if (j > 0) out << ' ';
+61       out << to_string(l.words.at(j));
+62     }
+63     out << '\n';
+64   }
+65   return out.str();
+66 }
+67 
+68 line call(string s) {
+69   line result;
+70   result.words.push_back(call());
+71   result.words.push_back(disp32(s));
+72   return result;
+73 }
+74 
+75 word call() {
+76   word result;
+77   result.data = "e8";
+78   result.metadata.push_back("call");
+79   return result;
+80 }
+81 
+82 word disp32(string s) {
+83   word result;
+84   result.data = s;
+85   result.metadata.push_back("disp32");
+86   return result;
+87 }
+88 
+89 line ret() {
+90   line result;
+91   result.words.push_back(word());
+92   result.words.back().data = "c3";
+93   result.words.back().metadata.push_back("return");
+94   return result;
+95 }
+
+ + + -- cgit 1.4.1-2-gfad0