qemu/loongarch at 700784bfc65496551e15ccebff5ac30b6d13f492 - 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	target/loongarch: Avoid bits shift exceeding width of bool type	2024-10-16 15:56:42 +08:00
cpu_helper.c	target/loongarch: Add TCG macro in structure CPUArchState	2024-05-09 15:18:48 +08:00
cpu-csr.h	target/loongarch: Fix tlb huge page loading issue	2024-03-20 10:20:03 +08:00
cpu-param.h	target: Define TCG_GUEST_DEFAULT_MO in 'cpu-param.h'	2024-04-26 15:31:37 +02:00
cpu-qom.h	target: Move ArchCPUClass definition to 'cpu.h'	2023-11-07 13:08:48 +01:00
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	target/loongarch: honour show_opcodes when disassembling	2024-03-06 12:35:51 +00:00
gdbstub.c	target/loongarch: Use explicit little-endian LD/ST API	2024-10-15 12:13:59 -03:00
helper.h	target/loongarch: Implement xvshuf xvperm{i} xvshuf4i	2023-09-20 14:33:42 +08:00
insns.decode	target/loongarch: Add preldx instruction	2023-10-13 09:50:16 +08:00
internals.h	target/loongarch: Support QMP dump-guest-memory	2024-09-12 20:51:18 +08:00
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	target/loongarch: Support QMP dump-guest-memory	2024-09-12 20:51:18 +08:00
README
trace-events	target/loongarch: Implement set vcpu intr for kvm	2024-01-11 19:22:32 +08:00
trace.h	target/loongarch: Implement kvm get/set registers	2024-01-11 19:14:00 +08:00
translate.h
vec.h	target/loongarch: Move simply DO_XX marcos togther	2023-09-20 14:33:43 +08:00

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/