From: Max Filippov <jcmvbkbc@gmail.com>
To: qemu-devel@nongnu.org
Cc: Blue Swirl <blauwirbel@gmail.com>, Max Filippov <jcmvbkbc@gmail.com>
Subject: [Qemu-devel] [PATCH 6/9] target-xtensa: implement FP0 arithmetic
Date: Sun, 9 Sep 2012 05:29:55 +0400 [thread overview]
Message-ID: <1347154198-8629-7-git-send-email-jcmvbkbc@gmail.com> (raw)
In-Reply-To: <1347154198-8629-1-git-send-email-jcmvbkbc@gmail.com>
These are FP arithmetic opcodes.
See ISA, 4.3.10 for more details.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
target-xtensa/helper.h | 7 +++++
target-xtensa/op_helper.c | 37 +++++++++++++++++++++++++++
target-xtensa/translate.c | 61 ++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 104 insertions(+), 1 deletions(-)
diff --git a/target-xtensa/helper.h b/target-xtensa/helper.h
index 1662552..4e6e417 100644
--- a/target-xtensa/helper.h
+++ b/target-xtensa/helper.h
@@ -37,5 +37,12 @@ DEF_HELPER_3(wsr_dbreaka, void, env, i32, i32)
DEF_HELPER_3(wsr_dbreakc, void, env, i32, i32)
DEF_HELPER_2(wur_fcr, void, env, i32)
+DEF_HELPER_FLAGS_1(abs_s, TCG_CALL_CONST | TCG_CALL_PURE, f32, f32)
+DEF_HELPER_FLAGS_1(neg_s, TCG_CALL_CONST | TCG_CALL_PURE, f32, f32)
+DEF_HELPER_3(add_s, f32, env, f32, f32)
+DEF_HELPER_3(sub_s, f32, env, f32, f32)
+DEF_HELPER_3(mul_s, f32, env, f32, f32)
+DEF_HELPER_4(madd_s, f32, env, f32, f32, f32)
+DEF_HELPER_4(msub_s, f32, env, f32, f32, f32)
#include "def-helper.h"
diff --git a/target-xtensa/op_helper.c b/target-xtensa/op_helper.c
index 3bf7339..ba935a8 100644
--- a/target-xtensa/op_helper.c
+++ b/target-xtensa/op_helper.c
@@ -784,3 +784,40 @@ void HELPER(wur_fcr)(CPUXtensaState *env, uint32_t v)
env->uregs[FCR] = v & 0xfffff07f;
set_float_rounding_mode(rounding_mode[v & 3], &env->fp_status);
}
+
+float32 HELPER(abs_s)(float32 v)
+{
+ return float32_abs(v);
+}
+
+float32 HELPER(neg_s)(float32 v)
+{
+ return float32_chs(v);
+}
+
+float32 HELPER(add_s)(CPUXtensaState *env, float32 a, float32 b)
+{
+ return float32_add(a, b, &env->fp_status);
+}
+
+float32 HELPER(sub_s)(CPUXtensaState *env, float32 a, float32 b)
+{
+ return float32_sub(a, b, &env->fp_status);
+}
+
+float32 HELPER(mul_s)(CPUXtensaState *env, float32 a, float32 b)
+{
+ return float32_mul(a, b, &env->fp_status);
+}
+
+float32 HELPER(madd_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
+{
+ return float32_muladd(b, c, a, 0,
+ &env->fp_status);
+}
+
+float32 HELPER(msub_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
+{
+ return float32_muladd(b, c, a, float_muladd_negate_product,
+ &env->fp_status);
+}
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index d167e9d..ec22f60 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -1889,7 +1889,66 @@ static void disas_xtensa_insn(DisasContext *dc)
case 10: /*FP0*/
HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
- TBD();
+ switch (OP2) {
+ case 0: /*ADD.S*/
+ gen_helper_add_s(cpu_FR[RRR_R], cpu_env,
+ cpu_FR[RRR_S], cpu_FR[RRR_T]);
+ break;
+
+ case 1: /*SUB.S*/
+ gen_helper_sub_s(cpu_FR[RRR_R], cpu_env,
+ cpu_FR[RRR_S], cpu_FR[RRR_T]);
+ break;
+
+ case 2: /*MUL.S*/
+ gen_helper_mul_s(cpu_FR[RRR_R], cpu_env,
+ cpu_FR[RRR_S], cpu_FR[RRR_T]);
+ break;
+
+ case 4: /*MADD.S*/
+ gen_helper_madd_s(cpu_FR[RRR_R], cpu_env,
+ cpu_FR[RRR_R], cpu_FR[RRR_S], cpu_FR[RRR_T]);
+ break;
+
+ case 5: /*MSUB.S*/
+ gen_helper_msub_s(cpu_FR[RRR_R], cpu_env,
+ cpu_FR[RRR_R], cpu_FR[RRR_S], cpu_FR[RRR_T]);
+ break;
+
+ case 15: /*FP1OP*/
+ switch (RRR_T) {
+ case 0: /*MOV.Sf*/
+ tcg_gen_mov_i32(cpu_FR[RRR_R], cpu_FR[RRR_S]);
+ break;
+
+ case 1: /*ABS.Sf*/
+ gen_helper_abs_s(cpu_FR[RRR_R], cpu_FR[RRR_S]);
+ break;
+
+ case 4: /*RFRf*/
+ gen_window_check1(dc, RRR_R);
+ tcg_gen_mov_i32(cpu_R[RRR_R], cpu_FR[RRR_S]);
+ break;
+
+ case 5: /*WFRf*/
+ gen_window_check1(dc, RRR_S);
+ tcg_gen_mov_i32(cpu_FR[RRR_R], cpu_R[RRR_S]);
+ break;
+
+ case 6: /*NEG.Sf*/
+ gen_helper_neg_s(cpu_FR[RRR_R], cpu_FR[RRR_S]);
+ break;
+
+ default: /*reserved*/
+ RESERVED();
+ break;
+ }
+ break;
+
+ default: /*reserved*/
+ RESERVED();
+ break;
+ }
break;
case 11: /*FP1*/
--
1.7.7.6
next prev parent reply other threads:[~2012-09-09 1:31 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-09 1:29 [Qemu-devel] [PATCH 0/9] target-xtensa: implement FP coprocessor option Max Filippov
2012-09-09 1:29 ` [Qemu-devel] [PATCH 1/9] softfloat: make float_muladd_negate_* flags independent Max Filippov
2012-09-09 9:24 ` Aurelien Jarno
2012-09-09 1:29 ` [Qemu-devel] [PATCH 2/9] target-xtensa: handle boolean option in overlays Max Filippov
2012-09-09 1:29 ` [Qemu-devel] [PATCH 3/9] target-xtensa: specialize softfloat NaN rules Max Filippov
2012-09-09 9:31 ` Peter Maydell
2012-09-09 12:13 ` Max Filippov
2012-09-09 15:14 ` Max Filippov
2012-09-09 15:44 ` Peter Maydell
2012-09-09 1:29 ` [Qemu-devel] [PATCH 4/9] target-xtensa: add FP registers Max Filippov
2012-09-09 1:29 ` [Qemu-devel] [PATCH 5/9] target-xtensa: implement LSCX and LSCI groups Max Filippov
2012-09-09 1:29 ` Max Filippov [this message]
2012-09-09 10:05 ` [Qemu-devel] [PATCH 6/9] target-xtensa: implement FP0 arithmetic Peter Maydell
2012-09-09 12:25 ` Max Filippov
2012-09-09 12:56 ` Peter Maydell
2012-09-09 1:29 ` [Qemu-devel] [PATCH 7/9] target-xtensa: implement FP0 conversions Max Filippov
2012-09-09 11:06 ` Peter Maydell
2012-09-09 12:41 ` Max Filippov
2012-09-09 1:29 ` [Qemu-devel] [PATCH 8/9] target-xtensa: implement FP1 group Max Filippov
2012-09-09 1:29 ` [Qemu-devel] [PATCH 9/9] target-xtensa: implement coprocessor context option Max Filippov
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