add LA reference manual 1

content/en/docs/lav1/LICENSE

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+This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
+To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.

content/en/docs/lav1/about-this-manual.adoc

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+== About this manual
+
+=== Copyright Statement
+
+The copyright of this document belongs to Loongson Technology Corporation Limited.
+Without written permission, no company or individualmay disclose, reproduce or otherwise distribute any part of this document to third parties.
+Otherwise, they will be held legally responsible.
+
+=== Disclaimer
+
+This document provides only periodic information, and the contents contained may be updated at any time without notice, depending on the actual situation of the product.
+Loongson Technology Corporation Limited is not responsible for any direct or indirect damage aused by the improper use of the document.
+
+=== Loongson Technology Corporation Limited
+
+Building No.2, Loongson Industrial Park, +
+Zhongguancun Environmental Protection Park, Haidian District, Beijing
+
+Tel: 010-62546668
+
+Fax: 010-62600826
+
+=== Reading Guide
+
+This is the first volume of _LoongArch Reference Manual_, which describes the basic part of the LoongArch architecture.
+
+=== Translator`'s Note
+
+These documents were translated by Yanteng Si and Feiyang Chen.
+
+This is the translation of https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-Vol1-v1.00-CN.pdf.
+
+Due to the limited knowledge of the translators, there are some inevitable errors and omissions existing in this document, please feel free to correct.
+
+=== License
+
+include::LICENSE[]
+
+=== Contributors
+
+Since the release of the project, we have gotten several errata and content changes donated.
+Here are all the people who have contributed to https://github.com/loongson/LoongArch-Documentation[LoongArch Documentation] as an open source project.
+Thank you everyone for helping make this a better book for everyone.
+
+The contributors are listed in alphabetical order.
+
+[source]
+----
+include::contributors.txt[]
+----

content/en/docs/lav1/basic-floating-point-instructions.adoc

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+[[basic-floating-point-instructions]]
+== Basic Floating-Point Instructions
+
+This chapter will introduce the floating-point number instructions in the basic part of the non-privileged subset of LoongArch.
+The function definition of the basic floating-point instructions in LoongArch follows the IEEE 754-2008 standard.
+
+Basic floating-point instructions cannot be implemented separately from basic integer instructions.
+Generally speaking, it recommends that implementing both basic integer instructions and basic floating-point instructions at the same time.
+However, for some embedded applications that are cost-sensitive and have extremely low floating-point processing performance requirements, the architecture specification also allows not to implement basic floating-point instructions, or only implement single-precision floating-point numbers and word integers in basic floating-point instructions.
+Whether the implementation of basic floating-point instructions includes instructions for operating double-precision floating-point numbers and double-word integers has nothing to do with whether the architecture is LA32 or LA64.
+
+include::./basic-floating-point-instructions/programming-model-of-basic-floating-point-instructions.adoc[]
+
+include::./basic-floating-point-instructions/overview-of-floating-point-instructions.adoc[]

content/en/docs/lav1/basic-floating-point-instructions/overview-of-floating-point-instructions.adoc

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+[[overview-of-floating-point-instructions]]
+=== Overview of Floating-Point Instructions
+
+The instructions described in this section, except for `FLDX.{S/D}`, `FSTX.{S/D}`, `FLD{GT/LE}.{S/D}` and `FST{GT/LE}.{S/D}` these 12 The floating-point memory access instructions only belong to the LA64, and all other floating-point instructions are applicable to both LA32 and LA64.
+
+include::./overview-of-floating-point-instructions/floating-point-arithmetic-operation-instructions.adoc[]
+
+include::./overview-of-floating-point-instructions/floating-point-comparison-instructions.adoc[]
+
+include::./overview-of-floating-point-instructions/floating-point-conversion-instructions.adoc[]
+
+include::./overview-of-floating-point-instructions/floating-point-move-instructions.adoc[]
+
+include::./overview-of-floating-point-instructions/floating-point-branch-instructions.adoc[]
+
+include::./overview-of-floating-point-instructions/floating-point-common-memory-access-instructions.adoc[]
+
+include::./overview-of-floating-point-instructions/floating-point-bound-check-memory-access-instructions.adoc[]