| cmd/internal/bio | Package bio implements common I/O abstractions used within the Go toolchain. |
| cmd/internal/browser | Package browser provides utilities for interacting with users' browsers. |
| cmd/internal/buildid | |
| cmd/internal/diff | Package diff implements a Diff function that compare two inputs using the 'diff' tool. |
| cmd/internal/dwarf | Package dwarf generates DWARF debugging information. |
| cmd/internal/edit | Package edit implements buffered position-based editing of byte slices. |
| cmd/internal/gcprog | Package gcprog implements an encoder for packed GC pointer bitmaps, known as GC programs. |
| cmd/internal/goobj | Package goobj implements reading of Go object files and archives. |
| cmd/internal/goobj2 | |
| cmd/internal/obj | |
| cmd/internal/objabi | Originally, Go object files were Plan 9 object files, but no longer. |
| cmd/internal/obj/arm | |
| cmd/internal/obj/arm64 | Package arm64 implements an ARM64 assembler. |
| cmd/internal/objfile | Package objfile implements portable access to OS-specific executable files. |
| cmd/internal/obj/mips | |
| cmd/internal/obj/ppc64 | Package ppc64 implements a PPC64 assembler that assembles Go asm into the corresponding PPC64 binary instructions as defined by the Power ISA. |
| cmd/internal/obj/riscv | |
| cmd/internal/obj/s390x | |
| cmd/internal/obj/wasm | |
| cmd/internal/obj/x86 | |
| cmd/internal/src | |
| cmd/internal/sys | |
| cmd/internal/test2json | Package test2json implements conversion of test binary output to JSON. |