}

var armOperandTests = []operandTest{
	{"$0", "$0"},
	{"$256", "$256"},
	{"(R0)", "(R0)"},
	{"(R11)", "(R11)"},
	{"(g)", "(g)"},
	{"-12(R4)", "-12(R4)"},
	{"0(PC)", "0(PC)"},
	{"1024", "1024"},
	{"12(R(1))", "12(R1)"},
	{"12(R13)", "12(R13)"},
	{"R0", "R0"},
	{"R0->(32-1)", "R0->31"},
	{"R0<<R1", "R0<<R1"},
	{"R0>>R(1)", "R0>>R1"},
	{"R0@>(32-1)", "R0@>31"},
	{"R1", "R1"},

		}
	case "F":
		if 0 <= n && n <= 31 {
			return ppc64.REG_F0 + n, true
		}
	case "R":
		if 0 <= n && n <= 31 {
			return ppc64.REG_R0 + n, true
		}
	case "SPR":
		if 0 <= n && n <= 1024 {
			return ppc64.REG_SPR0 + n, true
		}
	}
	return 0, false

func BenchmarkBufferNotEmptyWriteRead(b *testing.B) {
	buf := make([]byte, 1024)
	for i := 0; i < b.N; i++ {
		var b Buffer
		b.Write(buf[0:1])
		for i := 0; i < 5<<10; i++ {
			b.Write(buf)
			b.Read(buf)
		}
	}
}

// Check that we don't compact too often. From Issue 5154.
func BenchmarkBufferFullSmallReads(b *testing.B) {
	buf := make([]byte, 1024)
	for i := 0; i < b.N; i++ {
		var b Buffer
		b.Write(buf)

	LDP	11(R0), (R1, R2)    // 1b2c0091610b40a9
	LDP	1024(R0), (R1, R2)  // 1b001091610b40a9
	LDP.W	8(R0), (R1, R2)     // 0188c0a9
	LDP.P	8(R0), (R1, R2)     // 0188c0a8
	LDP	(RSP), (R1, R2)     // e10b40a9
	LDP	8(RSP), (R1, R2)    // e18b40a9
	LDP	-8(RSP), (R1, R2)   // e18b7fa9
	LDP	11(RSP), (R1, R2)   // fb2f0091610b40a9
	LDP	1024(RSP), (R1, R2) // fb031091610b40a9
	LDP.W	8(RSP), (R1, R2)    // e18bc0a9

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

#include <string.h>

#include "_cgo_export.h"

void
callback(void *f)
{
	// use some stack space
	volatile char data[64*1024];

	data[0] = 0;
	goCallback(f);
        data[sizeof(data)-1] = 0;
}

void
callGoFoo(void)
{
	extern void goFoo(void);
	goFoo();
}

void
IntoC(void)
{
	BackIntoGo();
}

	// look for directoryEndSignature in the last 1k, then in the last 65k
	var buf []byte
	var directoryEndOffset int64
	for i, bLen := range []int64{1024, 65 * 1024} {
		if bLen > size {
			bLen = size
		}
		buf = make([]byte, int(bLen))
		if _, err := r.ReadAt(buf, size-bLen); err != nil && err != io.EOF {
			return nil, 0, err
		}

	f(w)
	return suffixIsZip64(t, ss)
}

type sizedReaderAt interface {
	io.ReaderAt
	Size() int64
}

func suffixIsZip64(t *testing.T, zip sizedReaderAt) bool {
	d := make([]byte, 1024)
	if _, err := zip.ReadAt(d, zip.Size()-int64(len(d))); err != nil {
		t.Fatalf("ReadAt: %v", err)
	}

	sigOff := findSignatureInBlock(d)
	if sigOff == -1 {
		t.Errorf("failed to find signature in block")

	// unless the user provides an explicit buffer with [Scanner.Buffer].
	// The actual maximum token size may be smaller as the buffer
	// may need to include, for instance, a newline.
	MaxScanTokenSize = 64 * 1024

	startBufSize = 4096 // Size of initial allocation for buffer.
)

// NewScanner returns a new [Scanner] to read from r.
// The split function defaults to [ScanLines].
func NewScanner(r io.Reader) *Scanner {

97                  rune        rune is an alias for int32, and 97 is in the set of 32-bit integers
"foo"               string      "foo" is in the set of string values
1024                int16       1024 is in the set of 16-bit integers
42.0                byte        42 is in the set of unsigned 8-bit integers
1e10                uint64      10000000000 is in the set of unsigned 64-bit integers

pkg syscall (freebsd-arm64), const RTF_HOST = 4
pkg syscall (freebsd-arm64), const RTF_HOST ideal-int
pkg syscall (freebsd-arm64), const RTF_LLDATA = 1024
pkg syscall (freebsd-arm64), const RTF_LLDATA ideal-int
pkg syscall (freebsd-arm64), const RTF_LLINFO = 1024
pkg syscall (freebsd-arm64), const RTF_LLINFO ideal-int
pkg syscall (freebsd-arm64), const RTF_LOCAL = 2097152
pkg syscall (freebsd-arm64), const RTF_LOCAL ideal-int