qemu/loongarch at master - qemu

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History

Song Gao c2a2e1ad2a target/loongarch: fix vldi/xvldi raise wrong error on qemu we got an aborted error ** ERROR:../target/loongarch/tcg/insn_trans/trans_vec.c.inc:3574:vldi_get_value: code should not be reached Bail out! ERROR:../target/loongarch/tcg/insn_trans/trans_vec.c.inc:3574:vldi_get_value: code should not be reached Aborted (core dumped) but on 3A600/3A5000 we got a "Illegal instruction" error. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2971 Fixes: `29bb5d727f` ("target/loongarch: Implement vldi") Cc: qemu-stable@nongnu.org Reviewed-by: Bibo Mao <maobibo@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Song Gao <gaosong@loongson.cn>		1 week ago
..
kvm	hw/loongarch/virt: Add kernel irqchip support	1 week ago
tcg	target/loongarch: fix vldi/xvldi raise wrong error	1 week ago
Kconfig	hw/loongarch: Add support loongson3 virt machine type.	3 years ago
README	docs/system/loongarch: Update the LoongArch document	3 years ago
arch_dump.c	include: Rename sysemu/ -> system/	6 months ago
cpu-csr.h	target/loongarch: Fix tlb huge page loading issue	1 year ago
cpu-param.h	tcg: Remove the TCG_GUEST_DEFAULT_MO definition globally	2 months ago
cpu-qom.h	target: Move ArchCPUClass definition to 'cpu.h'	2 years ago
cpu.c	target/loongarch: Fill in TCGCPUOps.pointer_wrap	1 month ago
cpu.h	hw/loongarch/virt: Add kernel irqchip support	1 week ago
cpu_helper.c	pull-loongarch-20230424	2 months ago
csr.c	target/loongarch: Dump all generic CSR registers	5 months ago
csr.h	target/loongarch: Dump all generic CSR registers	5 months ago
disas.c	target/loongarch: honour show_opcodes when disassembling	1 year ago
gdbstub.c	target/loongarch/gdbstub: Fix gdbstub incorrectly handling some registers	4 months ago
helper.h	target/loongarch: Move header file helper.h to directory tcg	2 months ago
insns.decode	target/loongarch: Add preldx instruction	2 years ago
internals.h	target/loongarch: Move definition of TCG specified function to tcg directory	2 months ago
loongarch-qmp-cmds.c	qapi: make most CPU commands unconditionally available	1 month ago
machine.c	include: Rename sysemu/ -> system/	6 months ago
meson.build	target/loongarch: Add common source file for CSR register	5 months ago
trace-events	target/loongarch: Implement set vcpu intr for kvm	1 year ago
trace.h	target/loongarch: Implement kvm get/set registers	1 year ago
translate.h	target/loongarch: Add CRC feature flag and use it to gate CRC instructions	2 months ago
vec.h	target/loongarch: Move simply DO_XX marcos togther	2 years ago

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/