ARM cpu emulation regression on QEMU 4.2.0

[*] Summary

Latest QEMU has an ARM CPU emulation regression.
Regression is reproducible by building any C# project with .NET Core SDK 3.1.300 on Debian 10 armhf.

Affected releases: QEMU 4.2.0, 5.0.0
Not affected releases: QEMU 4.1.0, QEMU 4.1.1


[*] Detail

qemu-system-arm fails to run .NET Core SDK 3.1 on Debian 10 armhf.

I occasionally test my C# projects on the virtual armhf/arm64 system emulated by QEMU.
MSBuild, a build engine of the .NET Core SDK, crashes on QEMU 4.2.0 or later.
The crash only happens when MSBuild tries to do any JIT compiling (dotnet build / dotnet test).

I attached MSBuild crash logs. MSBuild always crashes with SEHException, which means it tried to call C binary from .NET binary.

The issue affects QEMU 4.2.0 and 5.0.0.
QEMU 4.1.0, 4.1.1, and real Raspberry Pi 2 machine is not affected by this issue, and .NET Core SDK works completely fine.
Thus, I think an ARM CPU regression happened between QEMU 4.1.1 ~ QEMU 4.2.0.


[*] Environment

[Host OS]
Distribution: Linux Mint 19.3 amd64
CPU: AMD Ryzen 5 3600
Kernel: Ubuntu 5.3.0-51-generic

[QEMU Arguments]
qemu-system-arm \
    -smp 3 -M virt -m 4096 \
    -kernel vmlinuz-4.19.0-9-armmp-lpae \
    -initrd initrd.img-4.19.0-9-armmp-lpae \
    -append "root=/dev/vda2" \
    -drive if=none,file=debian_arm.qcow2,format=qcow2,id=hd \
    -device virtio-blk-device,drive=hd \
    -netdev user,id=mynet,hostfwd=tcp::<PORT>-:22 \
    -device virtio-net-device,netdev=mynet \
    -device virtio-rng-device\

[QEMU Guest OS]
Distribution: Debian 10 Buster armhf
Kernel: Debian 4.19.0-9-armmp-lpae
.NET Core SDK: 3.1.300

[Raspberry Pi 2]
Distribution: Raspberry Pi OS Buster armhf (20200527)

[Tested C# Projects]
This is a list of C# projects I have tested on QEMU and RPI2. 
- https://github.com/ied206/Joveler.DynLoader
- https://github.com/ied206/Joveler.Compression
- https://github.com/ied206/ManagedWimLib