Subzero, Wasm: Link and run torture tests; bug fixes.

README-wasm.md

Index: README-wasm.md
diff --git a/README-wasm.md b/README-wasm.md
index ef8d7bec0df1fea9edd8715b51d433ca5919a842..3c261bdc5e442b9cd15528ed09efba8bfd5e345e 100644
--- a/README-wasm.md
+++ b/README-wasm.md
@@ -18,6 +18,24 @@ You'll need to build v8 as a shared library. Build it like this:
 make -j48 native component=shared_library
 ```
 
-`wasm-run-torture-tests.py` can be used to run all the tests, or some subset.
-Running a subset will enable verbose output. You can download the torture tests
-from the [WebAssembly waterfall](https://wasm-stat.us/console).
+`wasm-run-torture-tests.py` can be used to run all the tests, or some
+subset. Running a subset will enable verbose output. You can download the
+torture tests from the [WebAssembly waterfall](https://wasm-stat.us/console) or
+by running `./fetch-torture-tests.sh`.
+
+
+To compile and run an executable, do the following from the subzero directory.
+
+```
+./pnacl-sz -filetype=obj -o foo.o foo.wasm
+clang -m32 foo.o src/wasm-runtime.c
+./a.out
+```
+
+Other useful commands:
+
+Compile a C file to a .wasm
+```
+./wasm-install/bin/emscripten/emcc hello-wasm.c -s BINARYEN=1
+./wasm-install/bin/sexpr-wasm a.out.wast -o a.out.wasm
+```