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)

<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.

// by a subsequent call to Scan. It does no allocation.
func (s *Scanner) Bytes() []byte {
	return s.token
}

// Text returns the most recent token generated by a call to [Scanner.Scan]
// as a newly allocated string holding its bytes.
func (s *Scanner) Text() string {
	return string(s.token)
}

// ErrFinalToken is a special sentinel error value. It is intended to be

// 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)

			}
			in.beginningOfLine = tok == '\n'
			if in.enabled() {
				in.text = in.Stack.Text()
				return tok
			}
		}
	}
	in.Error("recursive macro invocation")
	return 0
}

func (in *Input) Text() string {
	return in.text
}

// hash processes a # preprocessor directive. It reports whether it completes.
func (in *Input) hash() bool {

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

	}
	tok = p.next()
	if tok.ScanToken == '+' {
		if p.next().ScanToken != scanner.Int {
			return "", obj.ABI0, false
		}
		tok = p.next()
	}
	if tok.ScanToken != '(' {
		return "", obj.ABI0, false
	}
	if reg := p.next(); reg.ScanToken != scanner.Ident || reg.String() != "SB" {
		return "", obj.ABI0, false
	}
	if p.next().ScanToken != ')' || p.peek() != scanner.EOF {

			}
		}
		if err != test.err {
			t.Errorf("expected error %v, got %v", test.err, err)
		}
	}
}

func TestReadString(t *testing.T) {
	for _, test := range readBytesTests {
		buf := NewBufferString(test.buffer)
		var err error
		for _, expected := range test.expected {
			var s string
			s, err = buf.ReadString(test.delim)
			if s != expected {
				t.Errorf("expected %q, got %q", expected, s)
			}

	for _, test := range tests {
		err := tryParse(t, func() {
			parser.start(lex.Tokenize(test.input))
			addr := obj.Addr{}
			parser.operand(&addr)
		})

		switch {
		case err == nil:
			t.Errorf("fail at %s: got no errors; expected %s\n", test.input, test.error)
		case !strings.Contains(err.Error(), test.error):

}

// Test that the line splitter handles a final empty line with a carriage return but no newline.
func TestScanLineEmptyFinalLineWithCR(t *testing.T) {
	const text = "abcdefghijklmn\nopqrstuvwxyz\n\r"
	lines := []string{
		"abcdefghijklmn",
		"opqrstuvwxyz",
		"",
	}
	testNoNewline(text, lines, t)
}

var testError = errors.New("testError")