softhier: imported modifications from patch

models/cpu/iss/flexfloat/flexfloat.c

@@ -537,6 +537,22 @@ INLINE void ff_add(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b
     #endif
 }
 
+#include <math.h>
+
+INLINE void ff_exp(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b) {
+    assert((dest->desc.exp_bits == a->desc.exp_bits) && (dest->desc.frac_bits == a->desc.frac_bits) &&
+           (a->desc.exp_bits == b->desc.exp_bits) && (a->desc.frac_bits == b->desc.frac_bits));
+    dest->value = (fp_t)exp((double)a->value);
+    #ifdef FLEXFLOAT_TRACKING
+    dest->exact_value = (fp_t)exp((double)a->exact_value);
+    if(dest->tracking_fn) (dest->tracking_fn)(dest, dest->tracking_arg);
+    #endif
+    flexfloat_sanitize(dest);
+    #ifdef FLEXFLOAT_STATS
+    if(StatsEnabled) getOpStats(dest->desc)->add += 1;
+    #endif
+}
+
 INLINE void ff_sub(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b) {
     assert((dest->desc.exp_bits == a->desc.exp_bits) && (dest->desc.frac_bits == a->desc.frac_bits) &&
            (a->desc.exp_bits == b->desc.exp_bits) && (a->desc.frac_bits == b->desc.frac_bits));

models/cpu/iss/flexfloat/flexfloat.h

@@ -231,6 +231,7 @@ long double ff_get_longdouble(const flexfloat_t *obj);
 
 void ff_inverse(flexfloat_t *dest, const flexfloat_t *a);
 void ff_add(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b);
+void ff_exp(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b);
 void ff_sub(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b);
 void ff_mul(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b);
 void ff_div(flexfloat_t *dest, const flexfloat_t *a, const flexfloat_t *b);

models/cpu/iss/include/cores/snitch/class.hpp

@@ -98,6 +98,12 @@ class Iss
     bool snitch;
     bool fp_ss;
 
+    // -----------USE IO PORT TO HANDLE REDMULE------------------
+    vp::IoMaster redmule_itf;
+    vp::IoReq*   redmule_req;
+    uint16_t     redmule_mnk_reg [4];
+    uint32_t     redmule_xwy_reg [4];
+
 
     // -----------USE MASTER AND SLAVE PORT TO HANDLE OFFLOAD REQUEST------------------
 
@@ -199,6 +205,7 @@ static inline iss_reg_t fmode_get(Iss *iss, iss_insn_t *insn)
 #include "cpu/iss/include/isa/rv32Xfaux.hpp"
 #include "cpu/iss/include/isa/priv.hpp"
 #include <cpu/iss/include/isa/xdma.hpp>
+#include <cpu/iss/include/isa/redmule.hpp>
 #include "cpu/iss/include/isa/rv32frep.hpp"
 #include "cpu/iss/include/isa/rv32ssr.hpp"
 

models/cpu/iss/include/cores/snitch_fp_ss/class.hpp

@@ -97,6 +97,11 @@ class Iss
     bool snitch;
     bool fp_ss;
 
+    // -----------USE IO PORT TO HANDLE REDMULE------------------
+    vp::IoMaster redmule_itf;
+    vp::IoReq*   redmule_req;
+    uint16_t     redmule_mnk_reg [4];
+    uint32_t     redmule_xwy_reg [4];
 
     // -----------USE MASTER AND SLAVE PORT TO HANDLE OFFLOAD REQUEST------------------
 
@@ -207,6 +212,7 @@ static inline iss_reg_t fmode_get(Iss *iss, iss_insn_t *insn)
 #include "cpu/iss/include/isa/rv32Xfaux.hpp"
 #include "cpu/iss/include/isa/priv.hpp"
 #include <cpu/iss/include/isa/xdma.hpp>
+#include <cpu/iss/include/isa/redmule.hpp>
 #include "cpu/iss/include/isa/rv32frep.hpp"
 #include "cpu/iss/include/isa/rv32ssr.hpp"
 

models/cpu/iss/include/isa/redmule.hpp

@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2020 GreenWaves Technologies, SAS, ETH Zurich and
+ *                    University of Bologna
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "cpu/iss/include/iss_core.hpp"
+#include "cpu/iss/include/isa_lib/int.h"
+#include "cpu/iss/include/isa_lib/macros.h"
+
+static inline iss_reg_t mcnfig_exec(Iss *iss, iss_insn_t *insn, iss_reg_t pc)
+{
+    uint16_t m_size = REG_GET(0);
+    uint16_t n_size = REG_GET(1);
+    uint16_t k_size = (REG_GET(0) >> 16);
+
+    iss->redmule_mnk_reg[0] = m_size;
+    iss->redmule_mnk_reg[1] = n_size;
+    iss->redmule_mnk_reg[2] = k_size;
+
+    iss->redmule_req->init();
+    iss->redmule_req->set_addr(0);
+    iss->redmule_req->set_data((uint8_t*)iss->redmule_mnk_reg);
+    iss->redmule_req->set_size(8);
+    iss->redmule_itf.req(iss->redmule_req);
+
+    return iss_insn_next(iss, insn, pc);
+}
+
+
+static inline iss_reg_t marith_exec(Iss *iss, iss_insn_t *insn, iss_reg_t pc)
+{
+    uint32_t x_addr = REG_GET(0);
+    uint32_t w_addr = REG_GET(1);
+    uint32_t y_addr = REG_GET(2);
+    uint32_t config = UIM_GET(0);
+
+    iss->redmule_xwy_reg[0] = x_addr;
+    iss->redmule_xwy_reg[1] = w_addr;
+    iss->redmule_xwy_reg[2] = y_addr;
+    iss->redmule_xwy_reg[3] = config;
+
+    iss->redmule_req->init();
+    iss->redmule_req->set_addr(4);
+    iss->redmule_req->set_data((uint8_t*)iss->redmule_xwy_reg);
+    iss->redmule_req->set_size(16);
+    iss->redmule_itf.req(iss->redmule_req);
+
+    return iss_insn_next(iss, insn, pc);
+}