// Holds the loader along with temporary states for loading symbols.
type loadState struct {
	l            *Loader
	hashed64Syms map[uint64]symAndSize         // short hashed (content-addressable) symbols, keyed by content hash
	hashedSyms   map[goobj.HashType]symAndSize // hashed (content-addressable) symbols, keyed by content hash

	linknameVarRefs []linknameVarRef // linknamed var refererces
}

type linknameVarRef struct {

// Sign given request using Signature V4.
func signStreamingRequest(req *http.Request, accessKey, secretKey string, currTime time.Time) (string, error) {
	// Get hashed payload.
	hashedPayload := req.Header.Get("x-amz-content-sha256")
	if hashedPayload == "" {
		return "", fmt.Errorf("Invalid hashed payload")
	}

	// Set x-amz-date.
	req.Header.Set("x-amz-date", currTime.Format(iso8601Format))

	// Get header map.

	hashed := sha512.Sum512(b[:])
	// The first 16 bytes of the hash used to be exposed on the wire as a ticket
	// prefix. They MUST NOT be used as a secret. In the future, it would make
	// sense to use a proper KDF here, like HKDF with a fixed salt.
	const legacyTicketKeyNameLen = 16
	copy(key.aesKey[:], hashed[legacyTicketKeyNameLen:])
	copy(key.hmacKey[:], hashed[legacyTicketKeyNameLen+len(key.aesKey):])

}

type transcriptHash interface {
	Write([]byte) (int, error)
}

// transcriptMsg is a helper used to hash messages which are not hashed when
// they are read from, or written to, the wire. This is typically the case for
// messages which are either not sent, or need to be hashed out of order from
// when they are read/written.
//
// For most messages, the message is marshalled using their marshal method,

	RET

aes16:
	MOVOU	(AX), X1
	JMP	final1

aes17to32:
	// make second starting seed
	PXOR	runtime·aeskeysched+16(SB), X1
	AESENC	X1, X1

	// load data to be hashed
	MOVOU	(AX), X2
	MOVOU	-16(AX)(CX*1), X3

	// xor with seed
	PXOR	X0, X2
	PXOR	X1, X3

	// scramble 3 times
	AESENC	X2, X2
	AESENC	X3, X3
	AESENC	X2, X2
	AESENC	X3, X3