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qemu-e2k/target/loongarch
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Rui Wang 2419978cb0
target/loongarch: Fix emulation of float-point disable exception 
We need to emulate it to generate a floating point disable exception
when CSR.EUEN.FPE is zero.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Rui Wang <wangrui@loongson.cn>
Message-Id: <20221104040517.222059-3-wangrui@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
2022-11-04 17:10:53 +08:00
..
insn_trans
target/loongarch: Fix emulation of float-point disable exception
2022-11-04 17:10:53 +08:00
constant_timer.c
target/loongarch: Add constant timer support
2022-06-06 18:09:03 +00:00
cpu-csr.h
target/loongarch: Add CSRs definition
2022-06-06 18:09:03 +00:00
cpu-param.h
target/loongarch: Add MMU support for LoongArch CPU.
2022-06-06 18:09:03 +00:00
cpu.c
target/loongarch: Fix emulation of float-point disable exception
2022-11-04 17:10:53 +08:00
cpu.h
target/loongarch: Fix emulation of float-point disable exception
2022-11-04 17:10:53 +08:00
csr_helper.c
target/loongarch: Add lock when writing timer clear reg
2022-07-04 11:08:58 +05:30
disas.c
target/loongarch: Add timer related instructions support.
2022-06-06 18:09:03 +00:00
fpu_helper.c
target/loongarch: Remove cpu_fcsr0
2022-08-08 19:42:53 -07:00
gdbstub.c
target/loongarch: Update gdb_set_fpu() and gdb_get_fpu()
2022-08-05 10:02:40 -07:00
helper.h
target/loongarch: Remove cpu_fcsr0
2022-08-08 19:42:53 -07:00
insns.decode
target/loongarch: Add timer related instructions support.
2022-06-06 18:09:03 +00:00
internals.h
target/loongarch: Update gdb_set_fpu() and gdb_get_fpu()
2022-08-05 10:02:40 -07:00
iocsr_helper.c
hw/intc: Fix LoongArch extioi coreisr accessing
2022-11-04 17:07:40 +08:00
Kconfig
hw/loongarch: Add support loongson3 virt machine type.
2022-06-06 18:09:03 +00:00
machine.c
target/loongarch: Add MMU support for LoongArch CPU.
2022-06-06 18:09:03 +00:00
meson.build
target/loongarch: Add gdb support.
2022-06-06 18:14:13 +00:00
op_helper.c
target/loongarch/op_helper: Fix coverity cond_at_most error
2022-07-19 21:53:58 +05:30
README
docs/system/loongarch: Update the LoongArch document
2022-08-13 04:45:03 -07:00
tlb_helper.c
target/loongarch: Fix raise_mmu_exception() set wrong exception_index
2022-11-04 17:09:50 +08:00
translate.c
target/loongarch: Adjust the layout of hardware flags bit fields
2022-11-04 17:10:52 +08:00
translate.h
target/loongarch: Add fixed point arithmetic instruction translation
2022-06-06 18:09:03 +00:00

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/