From: Richard Henderson <richard.henderson@linaro.org>
Date: Sun, 17 Sep 2023 05:25:30 +0000 (-0700)
Subject: target/hppa: Decode ADDB double-word
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f25d316098dd52ac74adf9416713cfe68c72f66e;p=qmiga%2Fqemu.git

target/hppa: Decode ADDB double-word

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index 7f767fea64..1b4fa401ba 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -3143,6 +3143,17 @@ static bool do_addb(DisasContext *ctx, unsigned r, TCGv_reg in1,
     DisasCond cond;
     bool d = false;
 
+    /*
+     * For hppa64, the ADDB conditions change with PSW.W,
+     * dropping ZNV, SV, OD in favor of double-word EQ, LT, LE.
+     */
+    if (ctx->tb_flags & PSW_W) {
+        d = c >= 5;
+        if (d) {
+            c &= 3;
+        }
+    }
+
     in2 = load_gpr(ctx, r);
     dest = tcg_temp_new();
     sv = NULL;