arm: Add support for ARMv8 (AArch64 & AArch32)

Note: AArch64 and AArch32 interworking is not supported. If you use an AArch64
kernel you are restricted to AArch64 user-mode binaries. This will be addressed
in a later patch.

Note: Virtualization is only supported in AArch32 mode. This will also be fixed
in a later patch.

Contributors:
Giacomo Gabrielli    (TrustZone, LPAE, system-level AArch64, AArch64 NEON, validation)
Thomas Grocutt       (AArch32 Virtualization, AArch64 FP, validation)
Mbou Eyole           (AArch64 NEON, validation)
Ali Saidi            (AArch64 Linux support, code integration, validation)
Edmund Grimley-Evans (AArch64 FP)
William Wang         (AArch64 Linux support)
Rene De Jong         (AArch64 Linux support, performance opt.)
Matt Horsnell        (AArch64 MP, validation)
Matt Evans           (device models, code integration, validation)
Chris Adeniyi-Jones  (AArch64 syscall-emulation)
Prakash Ramrakhyani  (validation)
Dam Sunwoo           (validation)
Chander Sudanthi     (validation)
Stephan Diestelhorst (validation)
Andreas Hansson      (code integration, performance opt.)
Eric Van Hensbergen  (performance opt.)
Gabe Black

1 files changed, 10 insertions, 3 deletions

diff --git a/src/sim/system.hh b/src/sim/system.hh
index c8945c8c1..ecef2c4f2 100644
--- a/src/sim/system.hh
+++ b/src/sim/system.hh
@@ -237,6 +237,13 @@ class System : public MemObject
      */
     Addr loadAddrMask;
 
+    /** Offset that should be used for binary/symbol loading.
+     * This further allows more flexibily than the loadAddrMask allows alone in
+     * loading kernels and similar. The loadAddrOffset is applied after the
+     * loadAddrMask.
+     */
+    Addr loadAddrOffset;
+
   protected:
     uint64_t nextPID;
 
@@ -321,7 +328,7 @@ class System : public MemObject
      * Called by pseudo_inst to track the number of work items completed by
      * this system.
      */
-    uint64_t 
+    uint64_t
     incWorkItemsEnd()
     {
         return ++workItemsEnd;
@@ -332,13 +339,13 @@ class System : public MemObject
      * Returns the total number of cpus that have executed work item begin or
      * ends.
      */
-    int 
+    int
     markWorkItem(int index)
     {
         int count = 0;
         assert(index < activeCpus.size());
         activeCpus[index] = true;
-        for (std::vector<bool>::iterator i = activeCpus.begin(); 
+        for (std::vector<bool>::iterator i = activeCpus.begin();
              i < activeCpus.end(); i++) {
             if (*i) count++;
         }