2023-03-29 04:13:25 +00:00
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///////////////////////////////////////////
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// fpu.S
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//
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// Written: David_Harris@hmc.edu 28 March 2023
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//
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// Purpose: Test coverage for FPU
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//
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// A component of the CORE-V-WALLY configurable RISC-V project.
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//
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// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
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//
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// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
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//
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// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
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// except in compliance with the License, or, at your option, the Apache License version 2.0. You
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// may obtain a copy of the License at
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//
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// https://solderpad.org/licenses/SHL-2.1/
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//
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// Unless required by applicable law or agreed to in writing, any work distributed under the
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// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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////////////////////////////////////////////////////////////////////////////////////////////////
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// load code to initalize stack, handle interrupts, terminate
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#include "WALLY-init-lib.h"
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main:
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2023-03-29 13:10:05 +00:00
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bseti t0, zero, 14 # turn on FPU
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csrs mstatus, t0
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2023-03-29 04:13:25 +00:00
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# Test legal instructions not covered elsewhere
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flq ft0, 0(a0)
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flh ft0, 8(a0)
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fsq ft0, 0(a0)
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fsh ft0, 8(a0)
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fcvt.h.s ft1, ft0
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fcvt.q.s ft2, ft0
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fcvt.h.w ft3, a0
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fcvt.h.wu ft3, a0
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fcvt.h.l ft3, a0
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fcvt.h.lu ft3, a0
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fcvt.w.h a0, ft3
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fcvt.wu.h a0, ft3
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fcvt.l.h a0, ft3
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fcvt.lu.h a0, ft3
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fcvt.q.w ft3, a0
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fcvt.q.wu ft3, a0
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fcvt.q.l ft3, a0
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fcvt.q.lu ft3, a0
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fcvt.w.q a0, ft3
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fcvt.wu.q a0, ft3
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fcvt.l.q a0, ft3
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fcvt.lu.q a0, ft3
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# Test illegal instructions are detected
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.word 0x00000007 // illegal floating-point load (bad Funct3)
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.word 0x00000027 // illegal floating-point store (bad Funct3)
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.word 0x58F00053 // illegal fsqrt (bad Rs2D)
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.word 0x20007053 // illegal fsgnj (bad Funct3)
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.word 0x28007053 // illegal fmin/max (bad Funct3)
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.word 0xA0007053 // illegal fcmp (bad Funct3)
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.word 0xE0007053 // illegal fclass/fmv (bad Funct3)
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.word 0xF0007053 // illegal fmv (bad Funct3)
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.word 0x43007053 // illegal fcvt.d.* (bad Rs2D)
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.word 0x42207053 // illegal fcvt.d.* (bad Rs2D[1])
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j done
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