forked from Github_Repos/cvw
55 lines
1.7 KiB
ArmAsm
55 lines
1.7 KiB
ArmAsm
///////////////////////////////////////////
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// ifu.S
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//
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// Written: sriley@g.hmc.edu 28 March 2023
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//
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// Purpose: Test coverage for IFU
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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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# turn floating point on
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li t0, 0x2000
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csrs mstatus, t0
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# calling compressed floating point load double instruction
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//.hword 0x2000 // CL type compressed floating-point ld-->funct3,imm,rs1',imm,rd',op
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// binary version 0000 0000 0000 0000 0010 0000 0000 0000
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mv s0, sp
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c.fld fs0, 0(s0)
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c.fsd fs0, 0(s0)
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// c.fldsp fs0, 0
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.hword 0x2002
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// c.fsdsp fs0, 0
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.hword 0xA002
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//# Illegal compressed instruction with op = 01, instr[15:10] = 100111, and 0's everywhere else
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//.hword 0x9C01
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# Line Illegal compressed instruction
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.hword 0x9C41
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j done
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