From c17e1ab26f4d6cdb6064241c85ff84029b3e0747 Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Sat, 9 Jan 2016 15:35:32 -0700
Subject: Add secondary cache syscalls

---
 src/system.rs | 35 ++++++++++++++++++++++++++++-------
 1 file changed, 28 insertions(+), 7 deletions(-)

diff --git a/src/system.rs b/src/system.rs
index faadb13..b8b928e 100644
--- a/src/system.rs
+++ b/src/system.rs
@@ -1,4 +1,6 @@
 use std;
+use std::cell::RefCell;
+use std::rc::Rc;
 
 use rustv::isa;
 use rustv::memory::SharedMemory;
@@ -6,20 +8,27 @@ use rustv::register_file::RegisterFile;
 use rustv::syscall;
 use rustv::trap::Trap;
 
+use shareable_cache::ShareableCache;
+
 pub struct SyscallHandler<'a> {
     memory: SharedMemory<'a>,
+    caches: Vec<Rc<RefCell<ShareableCache<'a>>>>,
 }
 
 impl<'a> SyscallHandler<'a> {
-    pub fn new(memory: SharedMemory<'a>) -> SyscallHandler<'a> {
+    pub fn new(memory: SharedMemory<'a>,
+               caches: Vec<Rc<RefCell<ShareableCache<'a>>>>)
+               -> SyscallHandler<'a> {
         SyscallHandler {
-            memory: memory
+            memory: memory,
+            caches: caches,
         }
     }
 }
 
 impl<'a> SyscallHandler<'a> {
-    fn print(&mut self, registers: &mut RegisterFile) -> Option<Trap> {
+    fn print(&mut self, core_id: usize,
+             registers: &mut RegisterFile) -> Option<Trap> {
         let mut base = registers.read_word(isa::Register::X11);
         let mut string = vec![];
 
@@ -44,19 +53,31 @@ impl<'a> SyscallHandler<'a> {
             println!("Error printing string: not valid UTF-8: {:?}", result);
         }
         None
+    }
 
+    fn enable_secondary(&mut self, core_id: usize,
+                        registers: &mut RegisterFile) -> Option<Trap> {
+        self.caches[core_id].borrow_mut().enable_secondary();
+        None
+    }
+
+    fn disable_secondary(&mut self, core_id: usize,
+                         registers: &mut RegisterFile) -> Option<Trap> {
+        self.caches[core_id].borrow_mut().disable_secondary();
+        None
     }
 }
 
 impl<'a> syscall::SyscallHandler for SyscallHandler<'a> {
     // TODO: is trap really appropriate here?
-    fn syscall(&mut self, registers: &mut RegisterFile) -> Option<Trap> {
+    fn syscall(&mut self, core_id: usize,
+               registers: &mut RegisterFile) -> Option<Trap> {
         let syscall_number = registers.read_word(isa::Register::X10);
 
         match syscall_number {
-            22 => {
-                self.print(registers)
-            }
+            22 => self.print(core_id, registers),
+            23 => self.enable_secondary(core_id, registers),
+            24 => self.disable_secondary(core_id, registers),
 
             _ => {
                 // TODO: some sort of error reporting
-- 
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