Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2015-11-02' into staging

QAPI patches

# gpg: Signature made Mon 02 Nov 2015 09:07:23 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-qapi-2015-11-02: (25 commits)
  qapi: Simplify gen_struct_field()
  qapi: Reserve 'u' member name
  qapi: Finish converting to new qapi union layout
  tpm: Convert to new qapi union layout
  memory: Convert to new qapi union layout
  input: Convert to new qapi union layout
  char: Convert to new qapi union layout
  net: Convert to new qapi union layout
  sockets: Convert to new qapi union layout
  block: Convert to new qapi union layout
  tests: Convert to new qapi union layout
  qapi-visit: Convert to new qapi union layout
  qapi: Start converting to new qapi union layout
  qapi-visit: Remove redundant functions for flat union base
  qapi: Unbox base members
  qapi: Prefer typesafe upcasts to qapi base classes
  qapi-types: Refactor base fields output
  qapi-visit: Split off visit_type_FOO_fields forward decl
  vnc: Hoist allocation of VncBasicInfo to callers
  qapi: Reserve 'q_*' and 'has_*' member names
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target-tilegx/translate.c

diff --git a/target-tilegx/translate.c b/target-tilegx/translate.c
index 34d45f8..354f25a 100644
--- a/target-tilegx/translate.c
+++ b/target-tilegx/translate.c
@@ -2105,38 +2105,44 @@
     unsigned srcbdest = get_SrcBDest_Y2(bundle);
     const char *mnemonic;
     TCGMemOp memop;
+    bool prefetch_nofault = false;
 
     switch (OEY2(opc, mode)) {
     case OEY2(LD1S_OPCODE_Y2, MODE_OPCODE_YA2):
         memop = MO_SB;
-        mnemonic = "ld1s";
+        mnemonic = "ld1s"; /* prefetch_l1_fault */
         goto do_load;
     case OEY2(LD1U_OPCODE_Y2, MODE_OPCODE_YA2):
         memop = MO_UB;
-        mnemonic = "ld1u";
+        mnemonic = "ld1u"; /* prefetch, prefetch_l1 */
+        prefetch_nofault = (srcbdest == TILEGX_R_ZERO);
         goto do_load;
     case OEY2(LD2S_OPCODE_Y2, MODE_OPCODE_YA2):
         memop = MO_TESW;
-        mnemonic = "ld2s";
+        mnemonic = "ld2s"; /* prefetch_l2_fault */
         goto do_load;
     case OEY2(LD2U_OPCODE_Y2, MODE_OPCODE_YA2):
         memop = MO_TEUW;
-        mnemonic = "ld2u";
+        mnemonic = "ld2u"; /* prefetch_l2 */
+        prefetch_nofault = (srcbdest == TILEGX_R_ZERO);
         goto do_load;
     case OEY2(LD4S_OPCODE_Y2, MODE_OPCODE_YB2):
         memop = MO_TESL;
-        mnemonic = "ld4s";
+        mnemonic = "ld4s"; /* prefetch_l3_fault */
         goto do_load;
     case OEY2(LD4U_OPCODE_Y2, MODE_OPCODE_YB2):
         memop = MO_TEUL;
-        mnemonic = "ld4u";
+        mnemonic = "ld4u"; /* prefetch_l3 */
+        prefetch_nofault = (srcbdest == TILEGX_R_ZERO);
         goto do_load;
     case OEY2(LD_OPCODE_Y2, MODE_OPCODE_YB2):
         memop = MO_TEQ;
         mnemonic = "ld";
     do_load:
-        tcg_gen_qemu_ld_tl(dest_gr(dc, srcbdest), load_gr(dc, srca),
-                           dc->mmuidx, memop);
+        if (!prefetch_nofault) {
+            tcg_gen_qemu_ld_tl(dest_gr(dc, srcbdest), load_gr(dc, srca),
+                               dc->mmuidx, memop);
+        }
         qemu_log_mask(CPU_LOG_TB_IN_ASM, "%s %s, %s", mnemonic,
                       reg_names[srcbdest], reg_names[srca]);
         return TILEGX_EXCP_NONE;