Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20181018' into staging

Queued tcg patches.

# gpg: Signature made Fri 19 Oct 2018 07:03:20 BST
# gpg:                using RSA key 64DF38E8AF7E215F
# 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-20181018: (21 commits)
  cputlb: read CPUTLBEntry.addr_write atomically
  target/s390x: Check HAVE_ATOMIC128 and HAVE_CMPXCHG128 at translate
  target/s390x: Skip wout, cout helpers if op helper does not return
  target/s390x: Split do_cdsg, do_lpq, do_stpq
  target/s390x: Convert to HAVE_CMPXCHG128 and HAVE_ATOMIC128
  target/ppc: Convert to HAVE_CMPXCHG128 and HAVE_ATOMIC128
  target/arm: Check HAVE_CMPXCHG128 at translate time
  target/arm: Convert to HAVE_CMPXCHG128
  target/i386: Convert to HAVE_CMPXCHG128
  tcg: Split CONFIG_ATOMIC128
  tcg: Add tlb_index and tlb_entry helpers
  cputlb: serialize tlb updates with env->tlb_lock
  cputlb: fix assert_cpu_is_self macro
  exec: introduce tlb_init
  target/unicore32: remove tlb_flush from uc32_init_fn
  target/alpha: remove tlb_flush from alpha_cpu_initfn
  tcg: distribute tcg_time into TCG contexts
  tcg: plug holes in struct TCGProfile
  tcg: fix use of uninitialized variable under CONFIG_PROFILER
  tcg: access cpu->icount_decr.u16.high with atomics
  ...

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

1 files changed, 19 insertions, 0 deletions

diff --git a/configure b/configure
index 9138af37f8..1d267b49cc 100755
--- a/configure
+++ b/configure
@@ -5154,6 +5154,21 @@ EOF
   fi
 fi
 
+cmpxchg128=no
+if test "$int128" = yes -a "$atomic128" = no; then
+  cat > $TMPC << EOF
+int main(void)
+{
+  unsigned __int128 x = 0, y = 0;
+  __sync_val_compare_and_swap_16(&x, y, x);
+  return 0;
+}
+EOF
+  if compile_prog "" "" ; then
+    cmpxchg128=yes
+  fi
+fi
+
 #########################################
 # See if 64-bit atomic operations are supported.
 # Note that without __atomic builtins, we can only
@@ -6663,6 +6678,10 @@ if test "$atomic128" = "yes" ; then
   echo "CONFIG_ATOMIC128=y" >> $config_host_mak
 fi
 
+if test "$cmpxchg128" = "yes" ; then
+  echo "CONFIG_CMPXCHG128=y" >> $config_host_mak
+fi
+
 if test "$atomic64" = "yes" ; then
   echo "CONFIG_ATOMIC64=y" >> $config_host_mak
 fi