Port to LoongArch architecture for Debian

[张丹丹 <zhangdandan@loongson.cn>]

Hi,

      I am an employee of Loongson Technology Co,Ltd.

     Port to LoongArch architecture for Debian ,now in the "Downstreaming" section in the port life-cycle according to <https://wiki.debian.org/PortsDocs/New>.
The purpose of this mail wants to discuss the port with the community and send an email to the debian-devel mailing list.

1、Introduction

     The LoongArch architecture (LoongArch) is an Instruction Set Architecture (ISA) that has Reduced Instruction Set Computer (RISC) style.     

   LoongArch has the typical characteristics of RISC. LoongArch instructions are of fixed size and have regular instruction formats. Most of the instructions have two source operands and one destination operand. LoongArch is a load-store architecture; this means only the load/store instructions can access memory the operands of the other instructions are within the processor core or the immediate number in the instruction opcode.

      Loongson and LoongArch documentations: https://github.com/loongson/LoongArch-Documentation

2、Links from upstream

Kernel、Gcc、Gdb、Binutils、Glibc、Llvm、Golang have merged by upstream(github) projects and so on.

For examples,

• Kernel : https://www.kernel.org/doc/html/latest/

• Gcc: https://gcc.gnu.org/gcc-12/changes.html

• Gdb: https://sourceware.org/gdb/

• Binutils: https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=binutils/NEWS;hb=refs/heads/binutils-2_39-branch

• Glibc: https://sourceware.org/pipermail/libc-alpha/2022-August/141193.html

• Llvm: https://github.com/llvm/llvm-project/tree/main/llvm/lib/Target

• Golang: https://go.dev/doc/go1.19

3、#debian-loongarch64 IRC

Have joined the #debian-bootstrap, #debian-ports and other Debian IRC channels. And have created a new #debian-loongarch64 channel.

Thanks！

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