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[Qemu-devel] [PULL v2 46/70] target/s390x: implement COMPARE AND SIGNAL
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL v2 46/70] target/s390x: implement COMPARE AND SIGNAL |
Date: |
Tue, 6 Jun 2017 17:30:55 -0700 |
From: Aurelien Jarno <address@hidden>
These functions differ from COMPARE by generating an exception for a
QNaN input. Use the non quiet version of floatXX_compare.
Signed-off-by: Aurelien Jarno <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
target/s390x/fpu_helper.c | 27 +++++++++++++++++++++++++++
target/s390x/helper.h | 3 +++
target/s390x/insn-data.def | 6 ++++++
target/s390x/translate.c | 21 +++++++++++++++++++++
4 files changed, 57 insertions(+)
diff --git a/target/s390x/fpu_helper.c b/target/s390x/fpu_helper.c
index e604e9f..26f124f 100644
--- a/target/s390x/fpu_helper.c
+++ b/target/s390x/fpu_helper.c
@@ -585,6 +585,33 @@ uint64_t HELPER(fixb)(CPUS390XState *env, uint64_t ah,
uint64_t al, uint32_t m3)
return RET128(ret);
}
+/* 32-bit FP compare and signal */
+uint32_t HELPER(keb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
+{
+ int cmp = float32_compare(f1, f2, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return float_comp_to_cc(env, cmp);
+}
+
+/* 64-bit FP compare and signal */
+uint32_t HELPER(kdb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
+{
+ int cmp = float64_compare(f1, f2, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return float_comp_to_cc(env, cmp);
+}
+
+/* 128-bit FP compare and signal */
+uint32_t HELPER(kxb)(CPUS390XState *env, uint64_t ah, uint64_t al,
+ uint64_t bh, uint64_t bl)
+{
+ int cmp = float128_compare(make_float128(ah, al),
+ make_float128(bh, bl),
+ &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return float_comp_to_cc(env, cmp);
+}
+
/* 32-bit FP multiply and add */
uint64_t HELPER(maeb)(CPUS390XState *env, uint64_t f1,
uint64_t f2, uint64_t f3)
diff --git a/target/s390x/helper.h b/target/s390x/helper.h
index c6fbc3b..86e2bc1 100644
--- a/target/s390x/helper.h
+++ b/target/s390x/helper.h
@@ -49,6 +49,9 @@ DEF_HELPER_FLAGS_3(lexb, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(ceb, TCG_CALL_NO_WG_SE, i32, env, i64, i64)
DEF_HELPER_FLAGS_3(cdb, TCG_CALL_NO_WG_SE, i32, env, i64, i64)
DEF_HELPER_FLAGS_5(cxb, TCG_CALL_NO_WG_SE, i32, env, i64, i64, i64, i64)
+DEF_HELPER_FLAGS_3(keb, TCG_CALL_NO_WG, i32, env, i64, i64)
+DEF_HELPER_FLAGS_3(kdb, TCG_CALL_NO_WG, i32, env, i64, i64)
+DEF_HELPER_FLAGS_5(kxb, TCG_CALL_NO_WG, i32, env, i64, i64, i64, i64)
DEF_HELPER_FLAGS_3(cgeb, TCG_CALL_NO_WG, i64, env, i64, i32)
DEF_HELPER_FLAGS_3(cgdb, TCG_CALL_NO_WG, i64, env, i64, i32)
DEF_HELPER_FLAGS_4(cgxb, TCG_CALL_NO_WG, i64, env, i64, i64, i32)
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index f92bfde..39fcce5 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -154,6 +154,12 @@
C(0xb349, CXBR, RRE, Z, x1_o, x2_o, 0, 0, cxb, 0)
C(0xed09, CEB, RXE, Z, e1, m2_32u, 0, 0, ceb, 0)
C(0xed19, CDB, RXE, Z, f1_o, m2_64, 0, 0, cdb, 0)
+/* COMPARE AND SIGNAL */
+ C(0xb308, KEBR, RRE, Z, e1, e2, 0, 0, keb, 0)
+ C(0xb318, KDBR, RRE, Z, f1_o, f2_o, 0, 0, kdb, 0)
+ C(0xb348, KXBR, RRE, Z, x1_o, x2_o, 0, 0, kxb, 0)
+ C(0xed08, KEB, RXE, Z, e1, m2_32u, 0, 0, keb, 0)
+ C(0xed18, KDB, RXE, Z, f1_o, m2_64, 0, 0, kdb, 0)
/* COMPARE IMMEDIATE */
C(0xc20d, CFI, RIL_a, EI, r1, i2, 0, 0, 0, cmps32)
C(0xc20c, CGFI, RIL_a, EI, r1, i2, 0, 0, 0, cmps64)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index b3cc349..0a35eed 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -2374,6 +2374,27 @@ static ExitStatus op_iske(DisasContext *s, DisasOps *o)
}
#endif
+static ExitStatus op_keb(DisasContext *s, DisasOps *o)
+{
+ gen_helper_keb(cc_op, cpu_env, o->in1, o->in2);
+ set_cc_static(s);
+ return NO_EXIT;
+}
+
+static ExitStatus op_kdb(DisasContext *s, DisasOps *o)
+{
+ gen_helper_kdb(cc_op, cpu_env, o->in1, o->in2);
+ set_cc_static(s);
+ return NO_EXIT;
+}
+
+static ExitStatus op_kxb(DisasContext *s, DisasOps *o)
+{
+ gen_helper_kxb(cc_op, cpu_env, o->out, o->out2, o->in1, o->in2);
+ set_cc_static(s);
+ return NO_EXIT;
+}
+
static ExitStatus op_laa(DisasContext *s, DisasOps *o)
{
/* The real output is indeed the original value in memory;
--
2.9.4
- [Qemu-devel] [PULL v2 37/70] target/s390x: Implement EXECUTE via new TranslationBlock, (continued)
- [Qemu-devel] [PULL v2 37/70] target/s390x: Implement EXECUTE via new TranslationBlock, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 35/70] target/s390x: Save current ilen during translation, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 38/70] target/s390x: Re-implement a few EXECUTE target insns directly, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 40/70] target/s390x: remove dead code in translate.c, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 41/70] target/s390x: remove some Linux assumptions from IPTE, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 39/70] target/s390x/cpu_models: Allow some additional feature bits for the "qemu" CPU, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 43/70] target/s390x: implement TEST AND SET, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 42/70] target/s390x: implement local-TLB-clearing in IPTE, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 44/70] target/s390x: implement TEST ADDRESSING MODE, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 45/70] target/s390x: implement PACK, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 46/70] target/s390x: implement COMPARE AND SIGNAL,
Richard Henderson <=
- [Qemu-devel] [PULL v2 48/70] target/s390x: implement MOVE NUMERICS, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 47/70] target/s390x: implement MOVE INVERSE, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 49/70] target/s390x: implement MOVE WITH OFFSET, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 50/70] target/s390x: implement MOVE ZONES, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 51/70] target/s390x: improve 24-bit and 31-bit addresses read, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 54/70] target/s390x: fix COMPARE LOGICAL LONG EXTENDED, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 52/70] target/s390x: improve 24-bit and 31-bit addresses write, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 53/70] target/s390x: improve 24-bit and 31-bit lengths read/write, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 55/70] target/s390x: implement COMPARE LOGICAL LONG, Richard Henderson, 2017/06/06
- [Qemu-devel] [PULL v2 56/70] target/s390x: fix adj_len_to_page, Richard Henderson, 2017/06/06