diff mbox series

[v4,9/9] s390x/tcg: refactor specification checking

Message ID 20180927130303.12236-10-david@redhat.com
State New
Headers show
Series s390x: instruction flags and AFP registers for TCG | expand

Commit Message

David Hildenbrand Sept. 27, 2018, 1:03 p.m. UTC 
We can fit this nicely into less LOC, without harming readability.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/translate.c | 34 ++++++----------------------------
 1 file changed, 6 insertions(+), 28 deletions(-)
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Patch

diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index c4e31a8000..19b93f81e6 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -6090,34 +6090,12 @@  static DisasJumpType translate_one(CPUS390XState *env, DisasContext *s)
 
     /* Check for insn specification exceptions.  */
     if (insn->spec) {
-        int spec = insn->spec, excp = 0, r;
-
-        if (spec & SPEC_r1_even) {
-            r = get_field(&f, r1);
-            if (r & 1) {
-                excp = PGM_SPECIFICATION;
-            }
-        }
-        if (spec & SPEC_r2_even) {
-            r = get_field(&f, r2);
-            if (r & 1) {
-                excp = PGM_SPECIFICATION;
-            }
-        }
-        if (spec & SPEC_r3_even) {
-            r = get_field(&f, r3);
-            if (r & 1) {
-                excp = PGM_SPECIFICATION;
-            }
-        }
-        if (spec & SPEC_r1_f128 && !is_fp_pair(get_field(&f, r1))) {
-            excp = PGM_SPECIFICATION;
-        }
-        if (spec & SPEC_r2_f128 && !is_fp_pair(get_field(&f, r2))) {
-            excp = PGM_SPECIFICATION;
-        }
-        if (excp) {
-            gen_program_exception(s, excp);
+        if ((insn->spec & SPEC_r1_even && get_field(&f, r1) & 1) ||
+            (insn->spec & SPEC_r2_even && get_field(&f, r2) & 1) ||
+            (insn->spec & SPEC_r3_even && get_field(&f, r3) & 1) ||
+            (insn->spec & SPEC_r1_f128 && !is_fp_pair(get_field(&f, r1))) ||
+            (insn->spec & SPEC_r2_f128 && !is_fp_pair(get_field(&f, r2)))) {
+            gen_program_exception(s, PGM_SPECIFICATION);
             return DISAS_NORETURN;
         }
     }