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Jiajie Chen 17ffe331a9
target/loongarch: Split fcc register to fcc0-7 in gdbstub 
Since GDB 13.1(GDB commit ea3352172), GDB LoongArch changed to use
fcc0-7 instead of fcc register. This commit partially reverts commit
2f149c759 (`target/loongarch: Update gdb_set_fpu() and gdb_get_fpu()`)
to match the behavior of GDB.

Note that it is a breaking change for GDB 13.0 or earlier, but it is
also required for GDB 13.1 or later to work.

Signed-off-by: Jiajie Chen <c@jia.je>
Acked-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230808054315.3391465-1-c@jia.je>
Signed-off-by: Song Gao <gaosong@loongson.cn>
 		2023-08-24 11:17:59 +08:00
..
insn_trans target/loongarch: Add avail_IOCSR to check iocsr instructions 2023-08-24 11:17:58 +08:00
Kconfig hw/loongarch: Add support loongson3 virt machine type. 2022-06-06 18:09:03 +00:00
README docs/system/loongarch: Update the LoongArch document 2022-08-13 04:45:03 -07:00
constant_timer.c target/loongarch: Add constant timer support 2022-06-06 18:09:03 +00:00
cpu-csr.h target/loongarch: Support LoongArch32 VPPN 2023-08-24 11:17:56 +08:00
cpu-param.h target/loongarch: Remove `NB_MMU_MODES` define 2023-03-13 06:44:37 -07:00
cpu.c target/loongarch: cpu: Implement get_arch_id callback 2023-08-24 11:17:59 +08:00
cpu.h target/loongarch: cpu: Implement get_arch_id callback 2023-08-24 11:17:59 +08:00
csr_helper.c target/loongarch: Fix the CSRRD CPUID instruction on big endian hosts 2023-07-24 18:44:48 +02:00
disas.c target/loongarch: Implement vldi 2023-05-06 11:19:49 +08:00
fpu_helper.c target/loongarch: Implement LSX fpu arith instructions 2023-05-06 11:19:48 +08:00
gdbstub.c target/loongarch: Split fcc register to fcc0-7 in gdbstub 2023-08-24 11:17:59 +08:00
helper.h target/loongarch: Fix the CSRRD CPUID instruction on big endian hosts 2023-07-24 18:44:48 +02:00
insns.decode target/loongarch: Implement vldi 2023-05-06 11:19:49 +08:00
internals.h target/loongarch: Implement LSX fpu arith instructions 2023-05-06 11:19:48 +08:00
iocsr_helper.c target/loongarch: Do not include tcg-ldst.h 2023-05-11 09:53:41 +01:00
loongarch-qmp-cmds.c target/loongarch: Restrict 'qapi-commands-machine.h' to system emulation 2023-03-02 07:51:33 +01:00
lsx_helper.c target/loongarch: Implement vilvl vilvh vextrins vshuf 2023-05-06 11:19:49 +08:00
machine.c target/loongarch: Terminate vmstate subsections list 2023-05-10 09:52:36 +01:00
meson.build meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
op_helper.c target/loongarch: Extract set_pc() helper 2023-08-24 11:17:57 +08:00
tlb_helper.c target/loongarch: Support LoongArch32 VPPN 2023-08-24 11:17:56 +08:00
translate.c target/loongarch: Add avail_FP/FP_SP/FP_DP to check fpu instructions 2023-08-24 11:17:58 +08:00
translate.h target/loongarch: Add avail_IOCSR to check iocsr instructions 2023-08-24 11:17:58 +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/