Patchwork [130/147] target-s390: Implement CONVERT FROM LOGICAL

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Submitter Richard Henderson
Date Sept. 28, 2012, 1:06 a.m.
Message ID <1348794403-28322-1-git-send-email-rth@twiddle.net>
Download mbox | patch
Permalink /patch/187670/
State New
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Richard Henderson - Sept. 28, 2012, 1:06 a.m.
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
 target-s390x/fpu_helper.c  | 31 +++++++++++++++++++++++++++++++
 target-s390x/helper.h      |  3 +++
 target-s390x/insn-data.def |  7 +++++++
 target-s390x/translate.c   | 25 +++++++++++++++++++++++++
 4 files changed, 66 insertions(+)

Patch

diff --git a/target-s390x/fpu_helper.c b/target-s390x/fpu_helper.c
index 1d5cd39..2983360 100644
--- a/target-s390x/fpu_helper.c
+++ b/target-s390x/fpu_helper.c
@@ -395,6 +395,37 @@  uint64_t HELPER(cxgb)(CPUS390XState *env, int64_t v2, uint32_t m3)
     return RET128(ret);
 }
 
+/* convert 64-bit uint to 32-bit float */
+uint64_t HELPER(celgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+    int hold = swap_round_mode(env, m3);
+    float32 ret = uint64_to_float32(v2, &env->fpu_status);
+    set_float_rounding_mode(hold, &env->fpu_status);
+    handle_exceptions(env, GETPC());
+    return ret;
+}
+
+/* convert 64-bit uint to 64-bit float */
+uint64_t HELPER(cdlgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+    int hold = swap_round_mode(env, m3);
+    float64 ret = uint64_to_float64(v2, &env->fpu_status);
+    set_float_rounding_mode(hold, &env->fpu_status);
+    handle_exceptions(env, GETPC());
+    return ret;
+}
+
+/* convert 64-bit uint to 128-bit float */
+uint64_t HELPER(cxlgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+    int hold = swap_round_mode(env, m3);
+    /* ??? Not 50% correct.  */
+    float128 ret = int64_to_float128(v2, &env->fpu_status);
+    set_float_rounding_mode(hold, &env->fpu_status);
+    handle_exceptions(env, GETPC());
+    return RET128(ret);
+}
+
 /* convert 32-bit float to 64-bit int */
 uint64_t HELPER(cgeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
 {
diff --git a/target-s390x/helper.h b/target-s390x/helper.h
index db606e8..fba3b70 100644
--- a/target-s390x/helper.h
+++ b/target-s390x/helper.h
@@ -32,6 +32,9 @@  DEF_HELPER_4(clcle, i32, env, i32, i64, i32)
 DEF_HELPER_3(cegb, i64, env, s64, i32)
 DEF_HELPER_3(cdgb, i64, env, s64, i32)
 DEF_HELPER_3(cxgb, i64, env, s64, i32)
+DEF_HELPER_3(celgb, i64, env, i64, i32)
+DEF_HELPER_3(cdlgb, i64, env, i64, i32)
+DEF_HELPER_3(cxlgb, i64, env, i64, i32)
 DEF_HELPER_3(aeb, i64, env, i64, i64)
 DEF_HELPER_3(adb, i64, env, i64, i64)
 DEF_HELPER_5(axb, i64, env, i64, i64, i64, i64)
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index a67fdcc..0777b55 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -233,6 +233,13 @@ 
     C(0xb3ac, CLGEBR,  RRF_e, FPE, 0, e2, r1, 0, clgeb, 0)
     C(0xb3ad, CLGDBR,  RRF_e, FPE, 0, f2_o, r1, 0, clgdb, 0)
     C(0xb3ae, CLGXBR,  RRF_e, FPE, 0, x2_o, r1, 0, clgxb, 0)
+/* CONVERT FROM LOGICAL */
+    C(0xb390, CELFBR,  RRF_e, FPE, 0, r2_32u, new, e1, celgb, 0)
+    C(0xb391, CDLFBR,  RRF_e, FPE, 0, r2_32u, f1, 0, cdlgb, 0)
+    C(0xb392, CXLFBR,  RRF_e, FPE, 0, r2_32u, x1, 0, cxlgb, 0)
+    C(0xb3a0, CELGBR,  RRF_e, FPE, 0, r2_o, new, e1, celgb, 0)
+    C(0xb3a1, CDLGBR,  RRF_e, FPE, 0, r2_o, f1, 0, cdlgb, 0)
+    C(0xb3a2, CXLGBR,  RRF_e, FPE, 0, r2_o, x1, 0, cxlgb, 0)
 
 /* DIVIDE */
     C(0x1d00, DR,      RR_a,  Z,   r1_D32, r2_32s, new_P, r1_P32, divs32, 0)
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index 0161bd0..dddd822 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -1609,6 +1609,31 @@  static ExitStatus op_cxgb(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+static ExitStatus op_celgb(DisasContext *s, DisasOps *o)
+{
+    TCGv_i32 m3 = tcg_const_i32(get_field(s->fields, m3));
+    gen_helper_celgb(o->out, cpu_env, o->in2, m3);
+    tcg_temp_free_i32(m3);
+    return NO_EXIT;
+}
+
+static ExitStatus op_cdlgb(DisasContext *s, DisasOps *o)
+{
+    TCGv_i32 m3 = tcg_const_i32(get_field(s->fields, m3));
+    gen_helper_cdlgb(o->out, cpu_env, o->in2, m3);
+    tcg_temp_free_i32(m3);
+    return NO_EXIT;
+}
+
+static ExitStatus op_cxlgb(DisasContext *s, DisasOps *o)
+{
+    TCGv_i32 m3 = tcg_const_i32(get_field(s->fields, m3));
+    gen_helper_cxlgb(o->out, cpu_env, o->in2, m3);
+    tcg_temp_free_i32(m3);
+    return_low128(o->out2);
+    return NO_EXIT;
+}
+
 static ExitStatus op_cksm(DisasContext *s, DisasOps *o)
 {
     int r2 = get_field(s->fields, r2);