A lot of changes were suggested by Chris.

ExecveHandler.c:
* Use "" instead of <> for LLVM include files
* Use raw I/O, we don't need buffering
* Set errno = 0 before using open()
* strlen() doesn't count NULL terminator in its size
* Use memcmp() instead of strcmp()
* Return result of the real execve(), not 0
* Search for path to bytecode file if not absolute/relative path

SysUtils.c:
* Convert all comments to C-style
* Stop using `bool', use `unsigned' instead

SysUtils.h:
* Stop using `bool', use `unsigned' instead
* Updated comment to FindExecutable()

README.txt:
* Describe the goal of LLEE and an application


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7911 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/tools/llee/README.txt b/tools/llee/README.txt
new file mode 100644
index 0000000000..ac9b01bbfb
--- /dev/null
+++ b/tools/llee/README.txt
@@ -0,0 +1,12 @@
+              LLEE: (LL)VM (E)xecution (E)nvironment
+
+This tool presents a virtual execution environment for LLVM programs. By
+preloading a shared object which defines a custom execve() functions, we can
+execute bytecode files with the JIT directly, without the user ever thinking
+about it.
+
+Thus, a user can freely run any program, native or LLVM bytecode, transparently,
+and without even being aware of it.
+
+To use LLEE, run `./llee <native_program>', a good choice is a shell. Anything
+started within that program will be affected by the execve() replacement.