mem-cache: TempCacheBlk allocates and destroys its own data

This change is because I want to make CacheBlk::data private, so that
I can track all the places which write to it. But to keep that commit
smaller (it is pretty big, because of all the places which might
change it), I have split this into a commit of its own.

Change-Id: I15a2fc1752085ff3681f5c74ec90be3828a559ea
Reviewed-on: https://gem5-review.googlesource.com/11829
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/src/mem/cache/blk.hh b/src/mem/cache/blk.hh
index 97e1d42d9..3bb0317cc 100644
--- a/src/mem/cache/blk.hh
+++ b/src/mem/cache/blk.hh
@@ -406,10 +406,17 @@ class TempCacheBlk final : public CacheBlk
     Addr _addr;
 
   public:
-    TempCacheBlk() : CacheBlk() {}
+    /**
+     * Creates a temporary cache block, with its own storage.
+     * @param size The size (in bytes) of this cache block.
+     */
+    TempCacheBlk(unsigned size) : CacheBlk()
+    {
+        data = new uint8_t[size];
+    }
     TempCacheBlk(const TempCacheBlk&) = delete;
     TempCacheBlk& operator=(const TempCacheBlk&) = delete;
-    ~TempCacheBlk() {};
+    ~TempCacheBlk() { delete [] data; };
 
     /**
      * Invalidate the block and clear all state.