riscv-tests-benchmarks tools not working on qemu linux

From: Pintu Agarwal <pintu.ping@gmail.com>
To: isa-dev@groups.riscv.org, linux-riscv@lists.infradead.org,
	 sw-dev@groups.riscv.org,
	Gurucharan Kaur Saluja <gurucharankaurs@gmail.com>
Subject: riscv-tests-benchmarks tools not working on qemu linux
Date: Fri, 14 Dec 2018 19:50:31 +0530	[thread overview]
Message-ID: <CAOuPNLi-_R4+wpc834Ku2PkHcHgSydA2HT_s1aYsMeNRqpDg=w@mail.gmail.com> (raw)

Hi,

I am interested in using : RISCV/riscv-tools/riscv-tests/benchmarks
But I am failing to execute it on QEMU environment.

This is my environment:
RISCV: rv64imafdcsu
Linux version: 4.19.0-rc8-00001-gf0a7d18 (gcc version 8.2.0 (GCC))
Tool chain: riscv64-unknown-linux-gnu-  8.2.0
rootfs: busybear
Platform: riscv-qemu
Command:
qemu-system-riscv64 -nographic -machine virt -kernel
PK/riscv-pk/build/bbl -append "root=/dev/vda ro console=ttyS0,115200"
-drive file=busybear.bin,format=raw,id=hd0 -device
virtio-blk-device,drive=hd0 -m 1024M -smp 4

Building the tests:
#/riscv-tools/riscv-tests/benchmarks$ make
Note: We changed the tool chain to:
RISCV_PREFIX ?= riscv$(XLEN)-unknown-linux-gnu-  (instead of unknown-elf)
All benchmarking programs compiled successfully and created program.riscv files.
Example: multiply.riscv

After this when we execute:
# spike multiply.riscv
We get this output:
mcycle = 24098
minstret = 24104

So, we assume this tool is working on spike.
But, when we try to execute the same on QEMU environment, it crashes
will illegal instruction:

root@(none):root# ./multiply.riscv
multiply.riscv[77]: unhandled signal 4 code 0x1 at 0x0000000080000040
in multiply.riscv[80000000+1000]
CPU: 0 PID: 77 Comm: multiply.riscv Not tainted
4.18.0-rc6-13938-g4060877-dirty #14
sepc: 0000000080000040 ra : 0000000000000000 sp : 0000000000000000
 gp : 0000000000000000 tp : 0000000000000000 t0 : 000000000001e000
 t1 : 0000000000000000 t2 : 0000000000000000 s0 : 0000000000000000
 s1 : 0000000000000000 a0 : 0000000000000000 a1 : 0000000000000000
 a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000
 a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000000000000
 s2 : 0000000000000000 s3 : 0000000000000000 s4 : 0000000000000000
 s5 : 0000000000000000 s6 : 0000000000000000 s7 : 0000000000000000
 s8 : 0000000000000000 s9 : 0000000000000000 s10: 0000000000000000
 s11: 0000000000000000 t3 : 0000000000000000 t4 : 0000000000000000
 t5 : 0000000000000000 t6 : 0000000000000000
sstatus: 0000000000002020 sbadaddr: 000000003002a073 scause: 0000000000000002
Illegal instruction

So, we wanted to know how to make these tools works for normal Linux
in QEMU with riscv64-unknown-linux-gnu tool chain (without spike)?
Moreover, we want to make these tools works for qemu-arm linux as
well. Is it possible? What kind of modification will be required to
support it?
Or, is there separate tools for linux?

Or, is it possible to create a simple and common benchmarking tool
like: {Sorting, Multiply, Matrix Multiply, Tower of Hanoi, Factorial,
etc.} using normal C programming and system calls (if required)?
But, question is, how should I measure it?

Please help with some reference.

Thanks,
Pintu

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