From c65c3ee16b6e5382a93e3ed28fccf2fa545794e8 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Sat, 16 Sep 2023 22:06:04 -0700
Subject: target/hppa: Decode CMPIB double-word

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/hppa/insns.decode | 10 ++++++++--
 target/hppa/translate.c  | 11 ++++++++++-
 2 files changed, 18 insertions(+), 3 deletions(-)

(limited to 'target/hppa')

diff --git a/target/hppa/insns.decode b/target/hppa/insns.decode
index fc327e2..48f09c9 100644
--- a/target/hppa/insns.decode
+++ b/target/hppa/insns.decode
@@ -51,6 +51,7 @@
 %pos_to_m       0:1      !function=pos_to_m
 %neg_to_m       0:1      !function=neg_to_m
 %a_to_m         2:1      !function=neg_to_m
+%cmpbid_c       13:2     !function=cmpbid_c
 
 ####
 # Argument set definitions
@@ -69,6 +70,7 @@
 &rrb_c_f        disp n c f r1 r2
 &rrb_c_d_f      disp n c d f r1 r2
 &rib_c_f        disp n c f r i
+&rib_c_d_f      disp n c d f r i
 
 ####
 # Format definitions
@@ -88,6 +90,8 @@
                 &rrb_c_d_f disp=%assemble_12
 @rib_cf         ...... r:5 ..... c:3 ........... n:1 .  \
                 &rib_c_f disp=%assemble_12 i=%im5_16
+@rib_cdf        ...... r:5 ..... c:3 ........... n:1 .  \
+                &rib_c_d_f disp=%assemble_12 i=%im5_16
 
 ####
 # System
@@ -303,8 +307,10 @@ cmpb            100000 ..... ..... ... ........... . .  @rrb_cdf d=0 f=0
 cmpb            100010 ..... ..... ... ........... . .  @rrb_cdf d=0 f=1
 cmpb            100111 ..... ..... ... ........... . .  @rrb_cdf d=1 f=0
 cmpb            101111 ..... ..... ... ........... . .  @rrb_cdf d=1 f=1
-cmpbi           100001 ..... ..... ... ........... . .  @rib_cf f=0
-cmpbi           100011 ..... ..... ... ........... . .  @rib_cf f=1
+cmpbi           100001 ..... ..... ... ........... . .  @rib_cdf d=0 f=0
+cmpbi           100011 ..... ..... ... ........... . .  @rib_cdf d=0 f=1
+cmpbi           111011 r:5 ..... f:1 .. ........... n:1 . \
+                &rib_c_d_f d=1 disp=%assemble_12 c=%cmpbid_c i=%im5_16
 
 addb            101000 ..... ..... ... ........... . .  @rrb_cf f=0
 addb            101010 ..... ..... ... ........... . .  @rrb_cf f=1
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index 6cd06fb..7f767fe 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -329,6 +329,12 @@ static int expand_shl11(DisasContext *ctx, int val)
     return val << 11;
 }
 
+/* Translate CMPI doubleword conditions to standard. */
+static int cmpbid_c(DisasContext *ctx, int val)
+{
+    return val ? val : 4; /* 0 == "*<<" */
+}
+
 
 /* Include the auto-generated decoder.  */
 #include "decode-insns.c.inc"
@@ -3122,9 +3128,12 @@ static bool trans_cmpb(DisasContext *ctx, arg_cmpb *a)
 
 static bool trans_cmpbi(DisasContext *ctx, arg_cmpbi *a)
 {
+    if (!ctx->is_pa20 && a->d) {
+        return false;
+    }
     nullify_over(ctx);
     return do_cmpb(ctx, a->r, tcg_constant_reg(a->i),
-                   a->c, a->f, false, a->n, a->disp);
+                   a->c, a->f, a->d, a->n, a->disp);
 }
 
 static bool do_addb(DisasContext *ctx, unsigned r, TCGv_reg in1,
-- 
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