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Re: [PATCH 20/20] target/loongarch: Add linux-user emulation support
From: |
maobibo |
Subject: |
Re: [PATCH 20/20] target/loongarch: Add linux-user emulation support |
Date: |
Wed, 30 Jun 2021 09:41:27 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux mips64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
在 2021年06月29日 21:42, Peter Maydell 写道:
> On Mon, 28 Jun 2021 at 13:05, Song Gao <gaosong@loongson.cn> wrote:
>>
>> Add files to linux-user/loongarch64
>> Add file to default-configs
>> Add loongarch to target/meson.build
>>
>> Signed-off-by: Song Gao <gaosong@loongson.cn>
>> ---
>> MAINTAINERS | 1 +
>> default-configs/targets/loongarch64-linux-user.mak | 4 +
>> include/elf.h | 2 +
>> linux-user/elfload.c | 58 ++++
>> linux-user/loongarch64/cpu_loop.c | 177 ++++++++++++
>> linux-user/loongarch64/signal.c | 193 +++++++++++++
>> linux-user/loongarch64/sockbits.h | 1 +
>> linux-user/loongarch64/syscall_nr.h | 307
>> +++++++++++++++++++++
>> linux-user/loongarch64/target_cpu.h | 36 +++
>> linux-user/loongarch64/target_elf.h | 14 +
>> linux-user/loongarch64/target_fcntl.h | 12 +
>> linux-user/loongarch64/target_signal.h | 28 ++
>> linux-user/loongarch64/target_structs.h | 49 ++++
>> linux-user/loongarch64/target_syscall.h | 46 +++
>> linux-user/loongarch64/termbits.h | 229 +++++++++++++++
>> linux-user/syscall_defs.h | 8 +-
>> meson.build | 2 +-
>> qapi/machine-target.json | 4 +-
>> target/loongarch/meson.build | 19 ++
>> target/meson.build | 1 +
>> 20 files changed, 1185 insertions(+), 6 deletions(-)
>
> This is a massive patch that would benefit from being split up
> into multiple smaller patches.
>
> I'm told by a kernel developer that loongarch hasn't yet been
> accepted into the Linux kernel mainline. Until it has been, the
> syscall ABI for it is not yet stable, so we won't be able to take
> the linux-user patches for it yet. (We have been burned in the
> past by taking linux-user architecture support patches without
> realizing they weren't for a stable ABI, and then being out of
> sync with the eventual upstream kernel ABI that was accepted.)
>
> We can certainly do code review in the meantime, though.
Thanks for reviewing the big series patches. It is understandable that
there should be linux kernel merged for one new architecture support
firstly, and then there will be linux-user simulator later.
We are planning to submit patch to linux kernel for LoongArch support,
there is the link:
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next
And we will continueto submit softmmu support for LoongArch. And is there
any extra requirements for softmmu simulation for new architecture,
such as gcc/binutils/bios?
regards
bibo, mao
>
> thanks
> -- PMM
>
- [PATCH 07/20] target/loongarch: Add fixed point arithmetic instruction translation, (continued)
- [PATCH 07/20] target/loongarch: Add fixed point arithmetic instruction translation, Song Gao, 2021/06/28
- [PATCH 10/20] target/loongarch: Add fixed point load/store instruction translation, Song Gao, 2021/06/28
- [PATCH 09/20] target/loongarch: Add fixed point bit instruction translation, Song Gao, 2021/06/28
- [PATCH 12/20] target/loongarch: Add fixed point extra instruction translation, Song Gao, 2021/06/28
- [PATCH 11/20] target/loongarch: Add fixed point atomic instruction translation, Song Gao, 2021/06/28
- [PATCH 15/20] target/loongarch: Add floating point conversion instruction translation, Song Gao, 2021/06/28
- [PATCH 14/20] target/loongarch: Add floating point comparison instruction translation, Song Gao, 2021/06/28
- [PATCH 13/20] target/loongarch: Add floating point arithmetic instruction translation, Song Gao, 2021/06/28
- [PATCH 20/20] target/loongarch: Add linux-user emulation support, Song Gao, 2021/06/28
- Re: [PATCH 20/20] target/loongarch: Add linux-user emulation support, Song Gao, 2021/06/29
[PATCH 18/20] target/loongarch: Add branch instruction translation, Song Gao, 2021/06/28
[PATCH 16/20] target/loongarch: Add floating point move instruction translation, Song Gao, 2021/06/28
[PATCH 17/20] target/loongarch: Add floating point load/store instruction translation, Song Gao, 2021/06/28
[PATCH 19/20] target/loongarch: Add disassembler, Song Gao, 2021/06/28
[PATCH 05/20] target/loongarch: Add memory management support, Song Gao, 2021/06/28
[PATCH 06/20] target/loongarch: Add main translation routines, Song Gao, 2021/06/28