qemu/loongarch at 7ba055b49b74c4d2f4a338c5198485bdff373fb1 - qemu

History

Peter Maydell 1bb5257def target/loongarch: Explicitly set 2-NaN propagation rule Set the 2-NaN propagation rule explicitly in the float_status word we use. (There are a couple of places in fpu_helper.c where we create a dummy float_status word with "float_status s = { };", but these are only used for calling float_is_quiet_nan() so it doesn't matter that we don't set a 2-NaN propagation rule there.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241025141254.2141506-6-peter.maydell@linaro.org		2024-11-05 10:09:54 +00:00
..
kvm	target/loongarch: Add steal time support on migration	2024-11-02 15:45:45 +08:00
tcg	target/loongarch: Explicitly set 2-NaN propagation rule	2024-11-05 10:09:54 +00:00
arch_dump.c
cpu_helper.c
cpu-csr.h
cpu-param.h
cpu-qom.h
cpu.c	target/loongarch/kvm: Implement LoongArch PMU extension	2024-11-02 15:20:41 +08:00
cpu.h	target/loongarch: Add steal time support on migration	2024-11-02 15:45:45 +08:00
disas.c
gdbstub.c
helper.h
insns.decode
internals.h
Kconfig
loongarch-qmp-cmds.c	target/loongarch/kvm: Implement LoongArch PMU extension	2024-11-02 15:20:41 +08:00
machine.c	target/loongarch: Add steal time support on migration	2024-11-02 15:45:45 +08:00
meson.build
README
trace-events
trace.h
translate.h
vec.h

README

- Introduction

LoongArch is the general processor architecture of Loongson.

The following versions of the LoongArch core are supported
core: 3A5000
https://github.com/loongson/LoongArch-Documentation/releases/download/2021.08.17/LoongArch-Vol1-v1.00-EN.pdf

We can get the latest loongarch documents at https://github.com/loongson/LoongArch-Documentation/tags.

- System emulation

You can reference docs/system/loongarch/loongson3.rst to get the information about system emulation of LoongArch.

- Linux-user emulation

We already support Linux user emulation. We can use LoongArch cross-tools to build LoongArch executables on X86 machines,
and We can also use qemu-loongarch64 to run LoongArch executables.

1. Config cross-tools env.

see System emulation.

2. Test tests/tcg/multiarch.

./configure --static --prefix=/usr --disable-werror --target-list="loongarch64-linux-user" --enable-debug

cd build

make && make check-tcg

3. Run LoongArch system basic command with loongarch-clfs-system.

- Config clfs env.

wget https://github.com/loongson/build-tools/releases/download/2022.05.29/loongarch64-clfs-system-5.0.tar.bz2

tar -vxf loongarch64-clfs-system-5.0.tar.bz2 -C /opt/clfs

cp /opt/clfs/lib64/ld-linux-loongarch-lp64d.so.1 /lib64

export LD_LIBRARY_PATH="/opt/clfs/lib64"

- Run LoongArch system basic command.

./qemu-loongarch64 /opt/clfs/usr/bin/bash
./qemu-loongarch64 /opt/clfs/usr/bin/ls
./qemu-loongarch64 /opt/clfs/usr/bin/pwd

- Note.
We can get the latest LoongArch documents or LoongArch tools at https://github.com/loongson/