}
	p.append(prog, "", true)
}

// asmPCAlign assembles a PCALIGN pseudo-op.
// PCALIGN $16
func (p *Parser) asmPCAlign(operands [][]lex.Token) {
	if len(operands) != 1 {
		p.errorf("expect one operand for PCALIGN")
		return
	}

	// Operand 0 must be an immediate constant.
	key := p.address(operands[0])
	if !p.validImmediate("PCALIGN", &key) {
		return
	}

	prog := &obj.Prog{
		Ctxt: p.ctxt,

<p>
The <code>PCALIGN</code> pseudo-instruction is used to indicate that the next instruction should be aligned
to a specified boundary by padding with no-op instructions.
</p>

<p>
It is currently supported on arm64, amd64, ppc64, loong64 and riscv64.

For example, the start of the <code>MOVD</code> instruction below is aligned to 32 bytes:
<pre>
PCALIGN $32
MOVD $2, R0
</pre>
</p>

	MOVD XER, 4(R1)                 // 7fe102a6fbe10004
	MOVD 4(R1), SPR(3)              // ebe100047fe303a6
	MOVD 4(R1), XER                 // ebe100047fe103a6
	OR $0, R0, R0                   // 60000000

	PCALIGN $16
	PNOP                            // 0700000000000000

	SETB CR1,R3                     // 7c640100
	VCLZLSBB V1,R2                  // 10400e02
	VCTZLSBB V1,R2                  // 10410e02

	switch word {
	case "DATA":
		p.asmData(operands)
	case "FUNCDATA":
		p.asmFuncData(operands)
	case "GLOBL":
		p.asmGlobl(operands)
	case "PCDATA":
		p.asmPCData(operands)
	case "PCALIGN":
		p.asmPCAlign(operands)
	case "TEXT":
		p.asmText(operands)
	default:
		return false
	}
	return true
}

// symDefRef scans a line for potential text symbol definitions and

and set loop count in CTR. LOAD_KEY(KEYP) SRD $4, LEN MOVD LEN, CTR BEQ Lcbc_dec PCALIGN $16 Lcbc_enc: P8_LXVB16X(INP, R0, INOUT) ADD $16, INP VXOR INOUT, V6, INOUT CIPHER_BLOCK(INOUT, IVEC, INOUT, VCIPHER, VCIPHERLAST, Lcbc_enc10, Lcbc_enc12) VOR INOUT, INOUT, IVEC // ciphertext (INOUT) is IVEC for next block. P8_STXVB16X(INOUT, OUTP, R0) ADD $16, OUTP BDNZ Lcbc_enc P8_STXVB16X(INOUT, IVP, R0) CLEAR_KEYS() RET PCALIGN $16 Lcbc_dec: P8_LXVB16X(INP, R0, TMP) ADD $16, INP CIPHER_BLOCK(TMP, V6, INOUT,...