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[PULL,21/23] target-m68k: Use setcond for scc

Message ID 1477422199-11208-22-git-send-email-laurent@vivier.eu (mailing list archive)
State New, archived
Headers show

Commit Message

Laurent Vivier Oct. 25, 2016, 7:03 p.m. UTC 
From: Richard Henderson <rth@twiddle.net>

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 target-m68k/translate.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)
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Patch

diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 4a650e1..5cc5e14 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -865,19 +865,21 @@  static void gen_jmpcc(DisasContext *s, int cond, TCGLabel *l1)
 
 DISAS_INSN(scc)
 {
-    TCGLabel *l1;
+    DisasCompare c;
     int cond;
-    TCGv reg;
+    TCGv reg, tmp;
 
-    l1 = gen_new_label();
     cond = (insn >> 8) & 0xf;
+    gen_cc_cond(&c, s, cond);
+
+    tmp = tcg_temp_new();
+    tcg_gen_setcond_i32(c.tcond, tmp, c.v1, c.v2);
+    free_cond(&c);
+
     reg = DREG(insn, 0);
-    tcg_gen_andi_i32(reg, reg, 0xffffff00);
-    /* This is safe because we modify the reg directly, with no other values
-       live.  */
-    gen_jmpcc(s, cond ^ 1, l1);
-    tcg_gen_ori_i32(reg, reg, 0xff);
-    gen_set_label(l1);
+    tcg_gen_neg_i32(tmp, tmp);
+    tcg_gen_deposit_i32(reg, reg, tmp, 0, 8);
+    tcg_temp_free(tmp);
 }
 
 /* Force a TB lookup after an instruction that changes the CPU state.  */