xk *uint32, dst, src *byte) TEXT 路encryptBlockAsm(SB), NOSPLIT|NOFRAME, $0 MOVD nr+0(FP), R6 // Round count/Key size MOVD xk+8(FP), R5 // Key pointer MOVD dst+16(FP), R3 // Dest pointer MOVD src+24(FP), R4 // Src pointer SETUP_ESPERM(R7) // Set CR{1,2,3}EQ to hold the key size information. CMPU R6, $10, CR1 CMPU R6, $12, CR2 CMPU R6, $14, CR3 MOVD $16, R6 MOVD $32, R7 MOVD $48, R8 MOVD $64, R9 MOVD $80, R10 MOVD $96, R11 MOVD $112, R12 // Load text in BE order P8_LXVB16X(R4, R0, V0) // V1, V2 will...

	MOVF	y+65540(FP), F4			// 1e020014de8f1000c433002b
	MOVD	y+65540(FP), F4			// 1e020014de8f1000c433802b
	MOVF	y+4097(FP), F4			// 3e000014de8f1000c427002b
	MOVD	y+4097(FP), F4			// 3e000014de8f1000c427802b
	MOVF	65536(R5), F4			// 1e020014de971000c403002b
	MOVD	65536(R5), F4			// 1e020014de971000c403802b
	MOVF	4096(R5), F4			// 3e000014de971000c403002b
	MOVD	4096(R5), F4			// 3e000014de971000c403802b

	MOVD	$0x11110000, R1               // MOVD	$286326784, R1              // 2122a2d2
	MOVD	$0xaaaa0000aaaa1111, R1       // MOVD	$-6149102338357718767, R1   // 212282d24155b5f24155f5f2
	MOVD	$0x1111ffff1111aaaa, R1       // MOVD	$1230045644216969898, R1    // a1aa8a922122a2f22122e2f2
	MOVD	$0xaaaaaaaaaaaaaaab, R1       // MOVD	$-6148914691236517205, R1   // e1f301b2615595f2

	MOVWU.P -84(R15), R9                       // e9c55ab8
	MOVD.P -46(R10), R8                        // 48255df8
	MOVD.P (R10), R8                           // 480540f8
	MOVWU.W -141(R3), R16                      // 703c57b8
	MOVD.W -134(R0), R29                       // 1dac57f8
	MOVWU 4156(R1), R25                        // 393c50b9
	MOVD 14616(R10), R9                        // 498d5cf9

	MOVBU	R4, name(SB)		// 1e00001ac4030029
	MOVF	F4, name(SB)		// 1e00001ac403402b
	MOVD	F4, name(SB)		// 1e00001ac403c02b
	MOVW	name(SB), R4		// 1e00001ac4038028
	MOVWU	name(SB), R4		// 1e00001ac403802a
	MOVV	name(SB), R4		// 1e00001ac403c028
	MOVB	name(SB), R4		// 1e00001ac4030028
	MOVBU	name(SB), R4		// 1e00001ac403002a
	MOVF	name(SB), F4		// 1e00001ac403002b
	MOVD	name(SB), F4		// 1e00001ac403802b
	MOVH	R4, name(SB)		// 1e00001ac4034029

	BNE	R0, R4, 1(PC)		// 80040044
	BLTU	R4, 1(PC)		// 80040068
	MOVF	y+8(FP), F4		// 6440002b
	MOVD	y+8(FP), F4		// 6440802b
	MOVF	1(F5), F4		// a404002b
	MOVD	1(F5), F4		// a404802b
	MOVF	F4, result+16(FP)	// 6460402b
	MOVD	F4, result+16(FP)	// 6460c02b
	MOVF	F4, 1(F5)		// a404402b
	MOVD	F4, 1(F5)		// a404c02b
	MOVW	R4, F5			// 85a41401
	MOVW	F4, R5			// 85b41401
	MOVV	R4, F5			// 85a81401

	MOVF	$(709.78271289338397), F3		// 970f000087a10f00

	MOVD	4(X5), F0				// 07b04200
	MOVD	F0, 4(X5)				// 27b20200
	MOVD	F0, F1					// d3000022
	MOVD	F3, X1					// d38001e2
	MOVD	X1, F3					// d38100f2
	MOVD	X0, F3					// d30100f2
	MOVD	$(0.0), F3				// d30100f2

	// Converted to load of symbol (AUIPC + FLD)
	MOVD	$(709.78271289338397), F3		// 970f000087b10f00

	LDAXPW	(R5), (R2, R2)                                   // ERROR "constrained unpredictable behavior"
	MOVD.P	300(R2), R3                                      // ERROR "offset out of range [-256,255]"
	MOVD.P	R3, 344(R2)                                      // ERROR "offset out of range [-256,255]"
	MOVD	(R3)(R7.SXTX<<2), R8                             // ERROR "invalid index shift amount"

	instructions["JPS"] = x86.AJPS  /* parity set (PF = 1) */
	instructions["JS"] = x86.AJMI   /* alternate */
	instructions["JZ"] = x86.AJEQ   /* alternate */
	instructions["MASKMOVDQU"] = x86.AMASKMOVOU
	instructions["MOVD"] = x86.AMOVQ
	instructions["MOVDQ2Q"] = x86.AMOVQ
	instructions["MOVNTDQ"] = x86.AMOVNTO
	instructions["MOVOA"] = x86.AMOVO
	instructions["PSLLDQ"] = x86.APSLLO
	instructions["PSRLDQ"] = x86.APSRLO

</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>

<h3 id="data-offsets">Interacting with Go types and constants</h3>

<p>
If a package has any .s files, then <code>go build</code> will direct