<h3 id="directives">Directives</h3>

<p>
The assembler uses various directives to bind text and data to symbol names.
For example, here is a simple complete function definition. The <code>TEXT</code>
directive declares the symbol <code>runtime·profileloop</code> and the instructions
that follow form the body of the function.
The last instruction in a <code>TEXT</code> block must be some sort of jump, usually a <code>RET</code> (pseudo-)instruction.

	f.Comments = ast1.Comments
	f.AST = ast2
}

// Like ast.CommentGroup's Text method but preserves
// leading blank lines, so that line numbers line up.
func commentText(g *ast.CommentGroup) string {
	var pieces []string
	for _, com := range g.List {
		c := com.Text
		// Remove comment markers.
		// The parser has given us exactly the comment text.
		switch c[1] {
		case '/':
			//-style comment (no newline at the end)

	VSUMB	V7, V8, V9              // e79780000064
	VSUMH	V22, V23, V24           // e78670001e64

	RET
	RET	foo(SB)

TEXT main·init(SB),DUPOK|NOSPLIT,$0 // TEXT main.init(SB), DUPOK|NOSPLIT, $0
	RET

TEXT main·main(SB),DUPOK|NOSPLIT,$0 // TEXT main.main(SB), DUPOK|NOSPLIT, $0
	BL      main·foo(SB)    // CALL main.foo(SB)

		var ok bool
		if err, ok = e.(error); e != nil && !ok {
			t.Fatal(e)
		}
	}()

	parse()

	return nil
}

func testBadOperandParser(t *testing.T, parser *Parser, tests []badOperandTest) {
	for _, test := range tests {
		err := tryParse(t, func() {
			parser.start(lex.Tokenize(test.input))
			addr := obj.Addr{}
			parser.operand(&addr)
		})

		switch {
		case err == nil:

	"fmt"
	"internal/testenv"
	"io"
	"math/rand"
	"strconv"
	"testing"
	"unicode/utf8"
)

const N = 10000       // make this bigger for a larger (and slower) test
var testString string // test data for write tests
var testBytes []byte  // test data; same as testString but as a slice.

type negativeReader struct{}

func (r *negativeReader) Read([]byte) (int, error) { return -1, nil }

func init() {

pkg syscall (openbsd-amd64-cgo), type SysProcAttr struct, Foreground bool
pkg syscall (openbsd-amd64-cgo), type SysProcAttr struct, Pgid int
pkg text/template, method (*Template) DefinedTemplates() string
pkg text/template, method (*Template) Option(...string) *Template
pkg time, method (Time) AppendFormat([]uint8, string) []uint8
pkg unicode, const Version = "8.0.0"
pkg unicode, var Ahom *RangeTable

// Code generated by avx512test. DO NOT EDIT.

#include "../../../../../../runtime/textflag.h"

TEXT asmtest_aes_avx512f(SB), NOSPLIT, $0
	VAESDEC X24, X7, X11                               // 62124508ded8 or 6212c508ded8
	VAESDEC X20, X7, X11                               // 62324508dedc or 6232c508dedc
	VAESDEC X24, X0, X11                               // 62127d08ded8 or 6212fd08ded8

// license that can be found in the LICENSE file.

// This input was created by taking the ppc64 testcase and modified
// by hand.

#include "../../../../../runtime/textflag.h"

TEXT foo(SB),DUPOK|NOSPLIT,$0
//
// branch
//
//	LBRA rel
//	{
//		outcode(int($1), &nullgen, 0, &$2);
//	}
	BEQ	R1, 2(PC)
label0:
	JMP	1(PC)		// JMP 1(PC)	// 10000001
	BEQ	R1, 2(PC)

startup, and _cgo_thread_start to a gcc-compiled function that can be
used to create a new thread, in place of the runtime's usual direct
system calls.

Internal and External Linking

The text above describes "internal" linking, in which cmd/link parses and
links host object files (ELF, Mach-O, PE, and so on) into the final
executable itself. Keeping cmd/link simple means we cannot possibly

pkg testing, type InternalFuzzTarget struct, Name string
pkg text/template/parse, const NodeBreak = 21
pkg text/template/parse, const NodeBreak NodeType
pkg text/template/parse, const NodeContinue = 22
pkg text/template/parse, const NodeContinue NodeType
pkg text/template/parse, method (*BreakNode) Copy() Node
pkg text/template/parse, method (*BreakNode) String() string
pkg text/template/parse, method (*ContinueNode) Copy() Node