[PATCH 1/2] target/m68k: Fix MACSR to CCR

[Richard Henderson]

First, we were writing to the entire SR register, instead
of only the flags portion.  Second, we were not clearing C
as per the documentation (X was cleared via the 0xf mask).

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/m68k/translate.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 5098f7e570..87044382c3 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -5892,8 +5892,10 @@ DISAS_INSN(from_mext)
 DISAS_INSN(macsr_to_ccr)
 {
     TCGv tmp = tcg_temp_new();
-    tcg_gen_andi_i32(tmp, QREG_MACSR, 0xf);
-    gen_helper_set_sr(cpu_env, tmp);
+
+    /* Note that X and C are always cleared. */
+    tcg_gen_andi_i32(tmp, QREG_MACSR, CCF_N | CCF_Z | CCF_V);
+    gen_helper_set_ccr(cpu_env, tmp);
     tcg_temp_free(tmp);
     set_cc_op(s, CC_OP_FLAGS);
 }
-- 
2.34.1