target-s390: Convert FP SQUARE ROOT

Signed-off-by: Richard Henderson <rth@twiddle.net>

diff --git a/target-s390x/fpu_helper.c b/target-s390x/fpu_helper.c
index b46dd021787e6a34796b512d602cf44a1612d696..3b28ccb62008851357c4a4e94ac6dc6348c5caf9 100644 (file)
--- a/target-s390x/fpu_helper.c
+++ b/target-s390x/fpu_helper.c
@@ -613,8 +613,26 @@ uint32_t HELPER(tcxb)(uint64_t ah, uint64_t al, uint64_t m2)
     return cc;
 }
 
-/* square root 64-bit RR */
-void HELPER(sqdbr)(CPUS390XState *env, uint32_t f1, uint32_t f2)
+/* square root 32-bit */
+uint64_t HELPER(sqeb)(CPUS390XState *env, uint64_t f2)
 {
-    env->fregs[f1].d = float64_sqrt(env->fregs[f2].d, &env->fpu_status);
+    float32 ret = float32_sqrt(f2, &env->fpu_status);
+    handle_exceptions(env, GETPC());
+    return ret;
+}
+
+/* square root 64-bit */
+uint64_t HELPER(sqdb)(CPUS390XState *env, uint64_t f2)
+{
+    float64 ret = float64_sqrt(f2, &env->fpu_status);
+    handle_exceptions(env, GETPC());
+    return ret;
+}
+
+/* square root 128-bit */
+uint64_t HELPER(sqxb)(CPUS390XState *env, uint64_t ah, uint64_t al)
+{
+    float128 ret = float128_sqrt(make_float128(ah, al), &env->fpu_status);
+    handle_exceptions(env, GETPC());
+    return RET128(ret);
 }

diff --git a/target-s390x/helper.h b/target-s390x/helper.h
index 4d2b0530cebb27cb92b5e9e89973c92d727e8f8e..eb8d663cc7d319d69a712e6c5f2b1005fd61a106 100644 (file)
--- a/target-s390x/helper.h
+++ b/target-s390x/helper.h
@@ -76,7 +76,9 @@ DEF_HELPER_FLAGS_2(tceb, TCG_CALL_NO_RWG_SE, i32, i64, i64)
 DEF_HELPER_FLAGS_2(tcdb, TCG_CALL_NO_RWG_SE, i32, i64, i64)
 DEF_HELPER_FLAGS_3(tcxb, TCG_CALL_NO_RWG_SE, i32, i64, i64, i64)
 DEF_HELPER_3(flogr, i32, env, i32, i64)
-DEF_HELPER_3(sqdbr, void, env, i32, i32)
+DEF_HELPER_2(sqeb, i64, env, i64)
+DEF_HELPER_2(sqdb, i64, env, i64)
+DEF_HELPER_3(sqxb, i64, env, i64, i64)
 DEF_HELPER_FLAGS_1(cvd, TCG_CALL_NO_RWG_SE, i64, s32)
 DEF_HELPER_4(unpk, void, env, i32, i64, i64)
 DEF_HELPER_4(tr, void, env, i32, i64, i64)

diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index 74bc9945e9003bd4a79e527f24537da4d60e27a5..93fd3cab19aed90e5e991ddf5f45909da1301120 100644 (file)
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -459,6 +459,13 @@
 /* SHIFT RIGHT DOUBLE LOGICAL */
     C(0x8c00, SRDL,    RS_a,  Z,   r1_D32, sh64, new, r1_D32, srl, 0)
 
+/* SQUARE ROOT */
+    C(0xb314, SQEBR,   RRE,   Z,   0, e2, new, e1, sqeb, 0)
+    C(0xb315, SQDBR,   RRE,   Z,   0, f2_o, f1, 0, sqdb, 0)
+    C(0xb316, SQXBR,   RRE,   Z,   0, x2_o, x1, 0, sqxb, 0)
+    C(0xed14, SQEB,    RXE,   Z,   0, m2_32u, new, e1, sqeb, 0)
+    C(0xed15, SQDB,    RXE,   Z,   0, m2_64, f1, 0, sqdb, 0)
+
 /* STORE */
     C(0x5000, ST,      RX_a,  Z,   r1_o, a2, 0, 0, st32, 0)
     C(0xe350, STY,     RXY_a, LD,  r1_o, a2, 0, 0, st32, 0)

diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index b6043d6701731a0be0c680358e065addd6faa848..dd7799820156c49a48bb9fa4d4aaa382fb1aa362 100644 (file)
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -1385,9 +1385,6 @@ static void disas_b3(CPUS390XState *env, DisasContext *s, int op, int m3,
     tcg_temp_free_i32(tmp32_2);
 
     switch (op) {
-    case 0x15: /* SQBDR       R1,R2             [RRE] */
-        FP_HELPER(sqdbr);
-        break;
     case 0x74: /* LZER        R1                [RRE] */
         tmp32_1 = tcg_const_i32(r1);
         gen_helper_lzer(cpu_env, tmp32_1);
@@ -2936,6 +2933,25 @@ static ExitStatus op_sxb(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+static ExitStatus op_sqeb(DisasContext *s, DisasOps *o)
+{
+    gen_helper_sqeb(o->out, cpu_env, o->in2);
+    return NO_EXIT;
+}
+
+static ExitStatus op_sqdb(DisasContext *s, DisasOps *o)
+{
+    gen_helper_sqdb(o->out, cpu_env, o->in2);
+    return NO_EXIT;
+}
+
+static ExitStatus op_sqxb(DisasContext *s, DisasOps *o)
+{
+    gen_helper_sqxb(o->out, cpu_env, o->in1, o->in2);
+    return_low128(o->out2);
+    return NO_EXIT;
+}
+
 #ifndef CONFIG_USER_ONLY
 static ExitStatus op_sigp(DisasContext *s, DisasOps *o)
 {