From: Taylor Simpson <tsimpson@quicinc.com>
To: qemu-devel@nongnu.org
Cc: ale@rev.ng, bcain@quicinc.com, philmd@redhat.com,
richard.henderson@linaro.org, laurent@vivier.eu,
tsimpson@quicinc.com, alex.bennee@linaro.org
Subject: [PATCH v7 16/35] Hexagon (target/hexagon/conv_emu.[ch]) utility functions
Date: Tue, 19 Jan 2021 21:28:49 -0600 [thread overview]
Message-ID: <1611113349-24906-17-git-send-email-tsimpson@quicinc.com> (raw)
In-Reply-To: <1611113349-24906-1-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/conv_emu.h | 31 ++++++++
target/hexagon/conv_emu.c | 177 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 208 insertions(+)
create mode 100644 target/hexagon/conv_emu.h
create mode 100644 target/hexagon/conv_emu.c
diff --git a/target/hexagon/conv_emu.h b/target/hexagon/conv_emu.h
new file mode 100644
index 0000000..1b23c75
--- /dev/null
+++ b/target/hexagon/conv_emu.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef HEXAGON_CONV_EMU_H
+#define HEXAGON_CONV_EMU_H
+
+extern uint64_t conv_sf_to_8u(float32 in, float_status *fp_status);
+extern uint32_t conv_sf_to_4u(float32 in, float_status *fp_status);
+extern int64_t conv_sf_to_8s(float32 in, float_status *fp_status);
+extern int32_t conv_sf_to_4s(float32 in, float_status *fp_status);
+
+extern uint64_t conv_df_to_8u(float64 in, float_status *fp_status);
+extern uint32_t conv_df_to_4u(float64 in, float_status *fp_status);
+extern int64_t conv_df_to_8s(float64 in, float_status *fp_status);
+extern int32_t conv_df_to_4s(float64 in, float_status *fp_status);
+
+#endif
diff --git a/target/hexagon/conv_emu.c b/target/hexagon/conv_emu.c
new file mode 100644
index 0000000..3985b10
--- /dev/null
+++ b/target/hexagon/conv_emu.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/host-utils.h"
+#include "fpu/softfloat.h"
+#include "macros.h"
+#include "conv_emu.h"
+
+#define LL_MAX_POS 0x7fffffffffffffffULL
+#define MAX_POS 0x7fffffffU
+
+static uint64_t conv_f64_to_8u_n(float64 in, int will_negate,
+ float_status *fp_status)
+{
+ uint8_t sign = float64_is_neg(in);
+ if (float64_is_infinity(in)) {
+ float_raise(float_flag_invalid, fp_status);
+ if (float64_is_neg(in)) {
+ return 0ULL;
+ } else {
+ return ~0ULL;
+ }
+ }
+ if (float64_is_any_nan(in)) {
+ float_raise(float_flag_invalid, fp_status);
+ return ~0ULL;
+ }
+ if (float64_is_zero(in)) {
+ return 0;
+ }
+ if (sign) {
+ float_raise(float_flag_invalid, fp_status);
+ return 0;
+ }
+ if (float64_lt(in, float64_half, fp_status)) {
+ /* Near zero, captures large fracshifts, denorms, etc */
+ float_raise(float_flag_inexact, fp_status);
+ switch (get_float_rounding_mode(fp_status)) {
+ case float_round_down:
+ if (will_negate) {
+ return 1;
+ } else {
+ return 0;
+ }
+ case float_round_up:
+ if (!will_negate) {
+ return 1;
+ } else {
+ return 0;
+ }
+ default:
+ return 0; /* nearest or towards zero */
+ }
+ }
+ return float64_to_uint64(in, fp_status);
+}
+
+static void clr_float_exception_flags(uint8_t flag, float_status *fp_status)
+{
+ uint8_t flags = fp_status->float_exception_flags;
+ flags &= ~flag;
+ set_float_exception_flags(flags, fp_status);
+}
+
+static uint32_t conv_df_to_4u_n(float64 fp64, int will_negate,
+ float_status *fp_status)
+{
+ uint64_t tmp;
+ tmp = conv_f64_to_8u_n(fp64, will_negate, fp_status);
+ if (tmp > 0x00000000ffffffffULL) {
+ clr_float_exception_flags(float_flag_inexact, fp_status);
+ float_raise(float_flag_invalid, fp_status);
+ return ~0U;
+ }
+ return (uint32_t)tmp;
+}
+
+uint64_t conv_df_to_8u(float64 in, float_status *fp_status)
+{
+ return conv_f64_to_8u_n(in, 0, fp_status);
+}
+
+uint32_t conv_df_to_4u(float64 in, float_status *fp_status)
+{
+ return conv_df_to_4u_n(in, 0, fp_status);
+}
+
+int64_t conv_df_to_8s(float64 in, float_status *fp_status)
+{
+ uint8_t sign = float64_is_neg(in);
+ uint64_t tmp;
+ if (float64_is_any_nan(in)) {
+ float_raise(float_flag_invalid, fp_status);
+ return -1;
+ }
+ if (sign) {
+ float64 minus_fp64 = float64_abs(in);
+ tmp = conv_f64_to_8u_n(minus_fp64, 1, fp_status);
+ } else {
+ tmp = conv_f64_to_8u_n(in, 0, fp_status);
+ }
+ if (tmp > (LL_MAX_POS + sign)) {
+ clr_float_exception_flags(float_flag_inexact, fp_status);
+ float_raise(float_flag_invalid, fp_status);
+ tmp = (LL_MAX_POS + sign);
+ }
+ if (sign) {
+ return -tmp;
+ } else {
+ return tmp;
+ }
+}
+
+int32_t conv_df_to_4s(float64 in, float_status *fp_status)
+{
+ uint8_t sign = float64_is_neg(in);
+ uint64_t tmp;
+ if (float64_is_any_nan(in)) {
+ float_raise(float_flag_invalid, fp_status);
+ return -1;
+ }
+ if (sign) {
+ float64 minus_fp64 = float64_abs(in);
+ tmp = conv_f64_to_8u_n(minus_fp64, 1, fp_status);
+ } else {
+ tmp = conv_f64_to_8u_n(in, 0, fp_status);
+ }
+ if (tmp > (MAX_POS + sign)) {
+ clr_float_exception_flags(float_flag_inexact, fp_status);
+ float_raise(float_flag_invalid, fp_status);
+ tmp = (MAX_POS + sign);
+ }
+ if (sign) {
+ return -tmp;
+ } else {
+ return tmp;
+ }
+}
+
+uint64_t conv_sf_to_8u(float32 in, float_status *fp_status)
+{
+ float64 fp64 = float32_to_float64(in, fp_status);
+ return conv_df_to_8u(fp64, fp_status);
+}
+
+uint32_t conv_sf_to_4u(float32 in, float_status *fp_status)
+{
+ float64 fp64 = float32_to_float64(in, fp_status);
+ return conv_df_to_4u(fp64, fp_status);
+}
+
+int64_t conv_sf_to_8s(float32 in, float_status *fp_status)
+{
+ float64 fp64 = float32_to_float64(in, fp_status);
+ return conv_df_to_8s(fp64, fp_status);
+}
+
+int32_t conv_sf_to_4s(float32 in, float_status *fp_status)
+{
+ float64 fp64 = float32_to_float64(in, fp_status);
+ return conv_df_to_4s(fp64, fp_status);
+}
--
2.7.4
next prev parent reply other threads:[~2021-01-20 3:34 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 3:28 [PATCH v7 00/35] Hexagon patch series Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 01/35] Hexagon Update MAINTAINERS file Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 02/35] Hexagon (target/hexagon) README Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 03/35] Hexagon (include/elf.h) ELF machine definition Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 04/35] Hexagon (target/hexagon) scalar core definition Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 05/35] Hexagon (disas) disassembler Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 06/35] Hexagon (target/hexagon) register names Taylor Simpson
2021-01-22 17:46 ` Philippe Mathieu-Daudé
2021-01-20 3:28 ` [PATCH v7 07/35] Hexagon (target/hexagon) scalar core helpers Taylor Simpson
2021-01-22 20:30 ` Philippe Mathieu-Daudé
2021-01-22 21:44 ` Philippe Mathieu-Daudé
2021-01-22 21:50 ` Taylor Simpson
2021-01-25 16:16 ` Philippe Mathieu-Daudé
2021-01-20 3:28 ` [PATCH v7 08/35] Hexagon (target/hexagon) GDB Stub Taylor Simpson
2021-01-22 17:48 ` Philippe Mathieu-Daudé
2021-01-20 3:28 ` [PATCH v7 09/35] Hexagon (target/hexagon) architecture types Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 10/35] Hexagon (target/hexagon) instruction and packet types Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 11/35] Hexagon (target/hexagon) register fields Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 12/35] Hexagon (target/hexagon) instruction attributes Taylor Simpson
2021-01-22 17:53 ` Philippe Mathieu-Daudé
2021-01-22 22:01 ` Taylor Simpson
2021-01-25 16:21 ` Philippe Mathieu-Daudé
2021-01-29 23:15 ` Taylor Simpson
2021-02-05 17:35 ` Philippe Mathieu-Daudé
2021-01-20 3:28 ` [PATCH v7 13/35] Hexagon (target/hexagon) instruction/packet decode Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 14/35] Hexagon (target/hexagon) instruction printing Taylor Simpson
2021-01-22 17:58 ` Philippe Mathieu-Daudé
2021-01-22 18:10 ` Eric Blake
2021-01-20 3:28 ` [PATCH v7 15/35] Hexagon (target/hexagon/arch.[ch]) utility functions Taylor Simpson
2021-01-22 18:09 ` Philippe Mathieu-Daudé
2021-01-22 21:59 ` Taylor Simpson
2021-01-25 16:29 ` Philippe Mathieu-Daudé
2021-01-25 21:43 ` Taylor Simpson
2021-01-20 3:28 ` Taylor Simpson [this message]
2021-01-20 3:28 ` [PATCH v7 17/35] Hexagon (target/hexagon/fma_emu.[ch]) " Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 18/35] Hexagon (target/hexagon/imported) arch import Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 19/35] Hexagon (target/hexagon) generator phase 1 - C preprocessor for semantics Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 20/35] Hexagon (target/hexagon) generator phase 2 - generate header files Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 21/35] Hexagon (target/hexagon) generator phase 3 - C preprocessor for decode tree Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 22/35] Hexagon (target/hexagon) generater phase 4 - " Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 23/35] Hexagon (target/hexagon) opcode data structures Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 24/35] Hexagon (target/hexagon) macros Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 25/35] Hexagon (target/hexagon) instruction classes Taylor Simpson
2021-01-20 3:28 ` [PATCH v7 26/35] Hexagon (target/hexagon) TCG generation Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 27/35] Hexagon (target/hexagon) TCG for instructions with multiple definitions Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 28/35] Hexagon (target/hexagon) TCG for floating point instructions Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 29/35] Hexagon (target/hexagon) translation Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 30/35] Hexagon (linux-user/hexagon) Linux user emulation Taylor Simpson
2021-02-17 20:15 ` Laurent Vivier
2021-02-17 21:10 ` Richard Henderson
2021-01-20 3:29 ` [PATCH v7 31/35] Hexagon (tests/tcg/hexagon) TCG tests - multiarch Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 32/35] Hexagon (tests/tcg/hexagon) TCG tests - atomics/load/store/misc Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 33/35] Hexagon (tests/tcg/hexagon) TCG tests - floating point Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 34/35] Hexagon build infrastructure Taylor Simpson
2021-01-22 22:34 ` Philippe Mathieu-Daudé
2021-01-22 22:41 ` Philippe Mathieu-Daudé
2021-01-22 22:44 ` Philippe Mathieu-Daudé
2021-01-27 19:16 ` Taylor Simpson
2021-01-20 3:29 ` [PATCH v7 35/35] Add Dockerfile for hexagon Taylor Simpson
2021-01-20 4:13 ` [PATCH v7 00/35] Hexagon patch series no-reply
2021-01-25 22:14 ` Philippe Mathieu-Daudé
2021-01-25 23:09 ` Taylor Simpson
2021-01-25 23:28 ` Brian Cain
2021-03-17 0:08 ` Philippe Mathieu-Daudé
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