Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20171229' into staging

Queued TCG patches

# gpg: Signature made Fri 29 Dec 2017 20:44:06 GMT
# gpg:                using RSA key 0x64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20171229:
  tcg: add cs_base and flags to -d exec output
  tcg: Allow 6 arguments to TCG helpers
  tcg: Add tcg_signed_cond
  tcg: Generalize TCGOp parameters
  tcg: Dynamically allocate TCGOps
  tcg: Remove TCGV_UNUSED* and TCGV_IS_UNUSED*
  target/moxie: Fix tlb_fill
  target/*helper: don't check retaddr before calling cpu_restore_state

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

6 files changed, 33 insertions, 6 deletions

diff --git a/include/exec/gen-icount.h b/include/exec/gen-icount.h
index 049bba86e9..54aaa61d65 100644
--- a/include/exec/gen-icount.h
+++ b/include/exec/gen-icount.h
@@ -5,7 +5,7 @@
 
 /* Helpers for instruction counting code generation.  */
 
-static int icount_start_insn_idx;
+static TCGOp *icount_start_insn;
 
 static inline void gen_tb_start(TranslationBlock *tb)
 {
@@ -26,8 +26,8 @@ static inline void gen_tb_start(TranslationBlock *tb)
         /* We emit a movi with a dummy immediate argument. Keep the insn index
          * of the movi so that we later (when we know the actual insn count)
          * can update the immediate argument with the actual insn count.  */
-        icount_start_insn_idx = tcg_op_buf_count();
         tcg_gen_movi_i32(imm, 0xdeadbeef);
+        icount_start_insn = tcg_last_op();
 
         tcg_gen_sub_i32(count, count, imm);
         tcg_temp_free_i32(imm);
@@ -48,14 +48,11 @@ static inline void gen_tb_end(TranslationBlock *tb, int num_insns)
     if (tb_cflags(tb) & CF_USE_ICOUNT) {
         /* Update the num_insn immediate parameter now that we know
          * the actual insn count.  */
-        tcg_set_insn_param(icount_start_insn_idx, 1, num_insns);
+        tcg_set_insn_param(icount_start_insn, 1, num_insns);
     }
 
     gen_set_label(tcg_ctx->exitreq_label);
     tcg_gen_exit_tb((uintptr_t)tb + TB_EXIT_REQUESTED);
-
-    /* Terminate the linked list.  */
-    tcg_ctx->gen_op_buf[tcg_ctx->gen_op_buf[0].prev].next = 0;
 }
 
 static inline void gen_io_start(void)
diff --git a/include/exec/helper-gen.h b/include/exec/helper-gen.h
index 15204ab961..22381a1708 100644
--- a/include/exec/helper-gen.h
+++ b/include/exec/helper-gen.h
@@ -56,6 +56,16 @@ static inline void glue(gen_helper_, name)(dh_retvar_decl(ret)          \
   tcg_gen_callN(HELPER(name), dh_retvar(ret), 5, args);                 \
 }
 
+#define DEF_HELPER_FLAGS_6(name, flags, ret, t1, t2, t3, t4, t5, t6)    \
+static inline void glue(gen_helper_, name)(dh_retvar_decl(ret)          \
+    dh_arg_decl(t1, 1),  dh_arg_decl(t2, 2), dh_arg_decl(t3, 3),        \
+    dh_arg_decl(t4, 4), dh_arg_decl(t5, 5), dh_arg_decl(t6, 6))         \
+{                                                                       \
+  TCGTemp *args[6] = { dh_arg(t1, 1), dh_arg(t2, 2), dh_arg(t3, 3),     \
+                     dh_arg(t4, 4), dh_arg(t5, 5), dh_arg(t6, 6) };     \
+  tcg_gen_callN(HELPER(name), dh_retvar(ret), 6, args);                 \
+}
+
 #include "helper.h"
 #include "trace/generated-helpers.h"
 #include "trace/generated-helpers-wrappers.h"
@@ -67,6 +77,7 @@ static inline void glue(gen_helper_, name)(dh_retvar_decl(ret)          \
 #undef DEF_HELPER_FLAGS_3
 #undef DEF_HELPER_FLAGS_4
 #undef DEF_HELPER_FLAGS_5
+#undef DEF_HELPER_FLAGS_6
 #undef GEN_HELPER
 
 #endif /* HELPER_GEN_H */
diff --git a/include/exec/helper-head.h b/include/exec/helper-head.h
index 639eefdbc0..e1fd08f2ba 100644
--- a/include/exec/helper-head.h
+++ b/include/exec/helper-head.h
@@ -125,6 +125,8 @@
     DEF_HELPER_FLAGS_4(name, 0, ret, t1, t2, t3, t4)
 #define DEF_HELPER_5(name, ret, t1, t2, t3, t4, t5) \
     DEF_HELPER_FLAGS_5(name, 0, ret, t1, t2, t3, t4, t5)
+#define DEF_HELPER_6(name, ret, t1, t2, t3, t4, t5, t6) \
+    DEF_HELPER_FLAGS_6(name, 0, ret, t1, t2, t3, t4, t5, t6)
 
 /* MAX_OPC_PARAM_IARGS must be set to n if last entry is DEF_HELPER_FLAGS_n. */
 
diff --git a/include/exec/helper-proto.h b/include/exec/helper-proto.h
index 954bef85ce..74943edb13 100644
--- a/include/exec/helper-proto.h
+++ b/include/exec/helper-proto.h
@@ -26,6 +26,10 @@ dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
 dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
                             dh_ctype(t4), dh_ctype(t5));
 
+#define DEF_HELPER_FLAGS_6(name, flags, ret, t1, t2, t3, t4, t5, t6) \
+dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
+                            dh_ctype(t4), dh_ctype(t5), dh_ctype(t6));
+
 #include "helper.h"
 #include "trace/generated-helpers.h"
 #include "tcg-runtime.h"
@@ -36,5 +40,6 @@ dh_ctype(ret) HELPER(name) (dh_ctype(t1), dh_ctype(t2), dh_ctype(t3), \
 #undef DEF_HELPER_FLAGS_3
 #undef DEF_HELPER_FLAGS_4
 #undef DEF_HELPER_FLAGS_5
+#undef DEF_HELPER_FLAGS_6
 
 #endif /* HELPER_PROTO_H */
diff --git a/include/exec/helper-tcg.h b/include/exec/helper-tcg.h
index b0c5bafa99..b3bdb0c399 100644
--- a/include/exec/helper-tcg.h
+++ b/include/exec/helper-tcg.h
@@ -39,6 +39,12 @@
     | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) | dh_sizemask(t4, 4) \
     | dh_sizemask(t5, 5) },
 
+#define DEF_HELPER_FLAGS_6(NAME, FLAGS, ret, t1, t2, t3, t4, t5, t6) \
+  { .func = HELPER(NAME), .name = str(NAME), .flags = FLAGS, \
+    .sizemask = dh_sizemask(ret, 0) | dh_sizemask(t1, 1) \
+    | dh_sizemask(t2, 2) | dh_sizemask(t3, 3) | dh_sizemask(t4, 4) \
+    | dh_sizemask(t5, 5) | dh_sizemask(t6, 6) },
+
 #include "helper.h"
 #include "trace/generated-helpers.h"
 #include "tcg-runtime.h"
@@ -50,5 +56,6 @@
 #undef DEF_HELPER_FLAGS_3
 #undef DEF_HELPER_FLAGS_4
 #undef DEF_HELPER_FLAGS_5
+#undef DEF_HELPER_FLAGS_6
 
 #endif /* HELPER_TCG_H */
diff --git a/include/qemu/queue.h b/include/qemu/queue.h
index 35292c3155..aa270d2b38 100644
--- a/include/qemu/queue.h
+++ b/include/qemu/queue.h
@@ -425,6 +425,11 @@ struct {                                                                \
                 (var);                                                  \
                 (var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)))
 
+#define QTAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, prev_var) \
+        for ((var) = (*(((struct headname *)((head)->tqh_last))->tqh_last)); \
+             (var) && ((prev_var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)), 1); \
+             (var) = (prev_var))
+
 /*
  * Tail queue access methods.
  */