From c8e241211445db065745c0e171c3b00e1aff5431 Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Sun, 10 Jan 2016 10:13:09 -0700
Subject: Add some syscall logging

---
 Cargo.lock    | 19 +++++++++++++++++++
 Cargo.toml    |  2 ++
 src/main.rs   |  4 ++++
 src/system.rs |  4 ++++
 4 files changed, 29 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index da90dcd..4a4255b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3,6 +3,8 @@ name = "cacheracer"
 version = "0.1.0"
 dependencies = [
  "docopt 0.6.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustv 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -31,6 +33,15 @@ name = "elfloader32"
 version = "0.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "env_logger"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.46 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "kernel32-sys"
 version = "0.2.1"
@@ -45,6 +56,14 @@ name = "libc"
 version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "log"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "memchr"
 version = "0.1.7"
diff --git a/Cargo.toml b/Cargo.toml
index 6ee23c7..5c58f6a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,6 +4,8 @@ version = "0.1.0"
 authors = ["David Li <li.davidm96@gmail.com>"]
 
 [dependencies]
+log = "0.3"
+env_logger = "0.3"
 rustv = "0.4.0"
 docopt = "0.6"
 rustc-serialize = "0.3"
diff --git a/src/main.rs b/src/main.rs
index ff5ed3a..c7ee66f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,6 @@
 extern crate docopt;
+#[macro_use] extern crate log;
+extern crate env_logger;
 extern crate rustc_serialize;
 extern crate rustv;
 extern crate time;
@@ -62,6 +64,8 @@ fn load_program<T: memory::Mmu>(memory: &mut memory::Memory,
 }
 
 fn main() {
+    env_logger::init().unwrap();
+
     let args: Args = Docopt::new(USAGE)
         .and_then(|d| d.decode())
         .unwrap_or_else(|e| e.exit());
diff --git a/src/system.rs b/src/system.rs
index b8b928e..8875f28 100644
--- a/src/system.rs
+++ b/src/system.rs
@@ -57,12 +57,16 @@ impl<'a> SyscallHandler<'a> {
 
     fn enable_secondary(&mut self, core_id: usize,
                         registers: &mut RegisterFile) -> Option<Trap> {
+        debug!("[syscall] [memory] Secondary cache enabled for core {}",
+               core_id);
         self.caches[core_id].borrow_mut().enable_secondary();
         None
     }
 
     fn disable_secondary(&mut self, core_id: usize,
                          registers: &mut RegisterFile) -> Option<Trap> {
+        debug!("[syscall] [memory] Secondary cache disabled for core {}",
+               core_id);
         self.caches[core_id].borrow_mut().disable_secondary();
         None
     }
-- 
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