| bytes | Package bytes implements functions for the manipulation of byte slices. |
| cmd/asm/internal/arch | Package arch defines architecture-specific information and support functions. |
| cmd/asm/internal/flags | Package flags implements top-level flags and the usage message for the assembler. |
| cmd/asm/internal/lex | Package lex implements lexical analysis for the assembler. |
| cmd/internal/obj | |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| io | Package io provides basic interfaces to I/O primitives. |
| log | Package log implements a simple logging package. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| text/scanner | Package scanner provides a scanner and tokenizer for UTF-8-encoded text. |
| unicode/utf8 | Package utf8 implements functions and constants to support text encoded in UTF-8. |