syscalls: fix latent brk/obreak bug.

Bogus calls to ChunkGenerator with negative size were triggering
a new assertion that was added there.
Also did a little renaming and cleanup in the process.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/mem/page_table.hh b/src/mem/page_table.hh
index b8b52174c..6ff0be082 100644
--- a/src/mem/page_table.hh
+++ b/src/mem/page_table.hh
@@ -91,11 +91,19 @@ class PageTable
     /**
      * Translate function
      * @param vaddr The virtual address.
-     * @return Physical address from translation.
+     * @param paddr Physical address from translation.
+     * @return True if translation exists
      */
     bool translate(Addr vaddr, Addr &paddr);
 
     /**
+     * Simplified translate function (just check for translation)
+     * @param vaddr The virtual address.
+     * @return True if translation exists
+     */
+    bool translate(Addr vaddr) { Addr dummy; return translate(vaddr, dummy); }
+
+    /**
      * Perform a translation on the memory request, fills in paddr
      * field of req.
      * @param req The memory request.