arch

module

v0.19.0 Latest Latest Go to latest Published: Jul 9, 2025 License: BSD-3-Clause

README ¶

arch

This repository holds machine architecture information used by the Go toolchain. The parts needed in the main Go repository are copied in.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://go.dev/doc/contribute.

The git repository is https://go.googlesource.com/arch.

The main issue tracker for the arch repository is located at https://go.dev/issues. Prefix your issue with "x/arch:" in the subject line, so it is easy to find.

Directories ¶

Path	Synopsis
arm
armasm
armmap Armmap constructs the ARM opcode map from the instruction set CSV file.	Armmap constructs the ARM opcode map from the instruction set CSV file.
armspec Armspec reads the “ARM Architecture Reference Manual” to collect instruction encoding details and writes those details to standard output in JSON format.	Armspec reads the “ARM Architecture Reference Manual” to collect instruction encoding details and writes those details to standard output in JSON format.
arm64
arm64asm
arm64gen
arm64spec
internal
simdgen simdgen is an experiment in generating Go <-> asm SIMD mappings.	simdgen is an experiment in generating Go <-> asm SIMD mappings.
simdgen/ops
unify Package unify implements unification of structured values.	Package unify implements unification of structured values.
loong64
loong64asm
loong64spec
ppc64
ppc64asm Package ppc64asm implements decoding of 64-bit PowerPC machine code.	Package ppc64asm implements decoding of 64-bit PowerPC machine code.
ppc64map ppc64map constructs the ppc64 opcode map from the instruction set CSV file.	ppc64map constructs the ppc64 opcode map from the instruction set CSV file.
ppc64spec Power64spec reads the “Power ISA V2.07” Manual to collect instruction encoding details and writes those details to standard output in CSV format.	Power64spec reads the “Power ISA V2.07” Manual to collect instruction encoding details and writes those details to standard output in CSV format.
riscv64
riscv64asm
riscv64spec
s390x
s390xasm
s390xmap s390xmap constructs the s390x opcode map from the instruction set CSV file.	s390xmap constructs the s390x opcode map from the instruction set CSV file.
s390xspec S390xspec reads the Principles of Operation PDF Manual to collect instruction encoding details and writes those details to standard output in CSV format.	S390xspec reads the Principles of Operation PDF Manual to collect instruction encoding details and writes those details to standard output in CSV format.
x86
x86asm Package x86asm implements decoding of x86 machine code.	Package x86asm implements decoding of x86 machine code.
x86avxgen
x86csv Package x86csv provides means to work with "x86.csv".	Package x86csv provides means to work with "x86.csv".
x86map X86map constructs the x86 opcode map from the instruction set CSV file.	X86map constructs the x86 opcode map from the instruction set CSV file.
x86spec X86spec reads the “Intel® 64 and IA-32 Architectures Software Developer's Manual” to collect instruction encoding details and writes those details to standard output in CSV format.	X86spec reads the “Intel® 64 and IA-32 Architectures Software Developer's Manual” to collect instruction encoding details and writes those details to standard output in CSV format.
xeddata Package xeddata provides utilities to work with XED datafiles.	Package xeddata provides utilities to work with XED datafiles.

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