}
			return nil, dmTime, errUnsupportedDisk
		}
		return nil, dmTime, err
	}
	defer f.Close()

	// Get size for precise allocation.
	stat, err := f.Stat()
	if err != nil {
		buf, err = io.ReadAll(f)
		return buf, dmTime, osErrToFileErr(err)
	}
	if stat.IsDir() {
		return nil, dmTime, errFileNotFound
	}

	// Read into appropriate buffer.

	return false
}

// returns true if object was modified after givenTime.
func ifModifiedSince(objTime time.Time, givenTime time.Time) bool {
	// The Date-Modified header truncates sub-second precision, so
	// use mtime < t+1s instead of mtime <= t to check for unmodified.
	return objTime.After(givenTime.Add(1 * time.Second))
}

// canonicalizeETag returns ETag with leading and trailing double-quotes removed,

pkg syscall (freebsd-arm64), func Accept4(int, int) (int, Sockaddr, error)
pkg syscall (freebsd-arm64), func Access(string, uint32) error
pkg syscall (freebsd-arm64), func Adjtime(*Timeval, *Timeval) error
pkg syscall (freebsd-arm64), func Bind(int, Sockaddr) error
pkg syscall (freebsd-arm64), func BpfBuflen //deprecated
pkg syscall (freebsd-arm64), func BpfBuflen(int) (int, error)

pkg syscall (darwin-arm64), const WUNTRACED ideal-int
pkg syscall (darwin-arm64), func Accept(int) (int, Sockaddr, error)
pkg syscall (darwin-arm64), func Access(string, uint32) error
pkg syscall (darwin-arm64), func Adjtime(*Timeval, *Timeval) error
pkg syscall (darwin-arm64), func Bind(int, Sockaddr) error
pkg syscall (darwin-arm64), func BpfBuflen //deprecated
pkg syscall (darwin-arm64), func BpfBuflen(int) (int, error)

pkg syscall (freebsd-riscv64), func Accept4(int, int) (int, Sockaddr, error) #53466
pkg syscall (freebsd-riscv64), func Access(string, uint32) error #53466
pkg syscall (freebsd-riscv64), func Adjtime(*Timeval, *Timeval) error #53466
pkg syscall (freebsd-riscv64), func Bind(int, Sockaddr) error #53466
pkg syscall (freebsd-riscv64), func BpfBuflen //deprecated #53466

	LD	(X5), X6				// 03b30200
	LD	4(X5), X6				// 03b34200
	SD	X5, (X6)				// 23305300
	SD	X5, 4(X6)				// 23325300

	// 8.1: Base Counters and Timers (Zicntr)
	RDCYCLE		X5				// f32200c0
	RDTIME		X5				// f32210c0
	RDINSTRET	X5				// f32220c0

	// 13.1: Multiplication Operations
	MUL	X5, X6, X7				// b3035302
	MULH	X5, X6, X7				// b3135302
	MULHU	X5, X6, X7				// b3335302

				prog.From = a[0]
				prog.Reg = p.getRegister(prog, op, &a[1])
				break
			}
		} else if p.arch.Family == sys.Loong64 {
			if arch.IsLoong64RDTIME(op) {
				// The Loong64 RDTIME family of instructions is a bit special,
				// in that both its register operands are outputs
				prog.To = a[0]
				if a[1].Type != obj.TYPE_REG {