my @posixclasses = (
	"[:alnum:]",
	"[:alpha:]",
	"[:ascii:]",
	"[:blank:]",
	"[:cntrl:]",
	"[:digit:]",
	"[:graph:]",
	"[:lower:]",
	"[:print:]",
	"[:punct:]",
	"[:space:]",
	"[:upper:]",
	"[:word:]",
	"[:xdigit:]",
);

my @perlclasses = (
	"\\d",
	"\\s",
	"\\w",
);

my %overrides = (
	# Prior to Perl 5.18, \s did not match vertical tab.
	# RE2 preserves that original behaviour.

#include "textflag.h"

// func stfle() facilityList
TEXT ·stfle(SB), NOSPLIT|NOFRAME, $0-32
	MOVD $ret+0(FP), R1
	MOVD $3, R0          // last doubleword index to store
	XC   $32, (R1), (R1) // clear 4 doublewords (32 bytes)
	WORD $0xb2b01000     // store facility list extended (STFLE)
	RET

// func kmQuery() queryResult
TEXT ·kmQuery(SB), NOSPLIT|NOFRAME, $0-16
	MOVD $0, R0         // set function code to 0 (KM-Query)

	"ZEXTH",
	"ROL",
	"ROLW",
	"ROR",
	"RORI",
	"RORIW",
	"RORW",
	"ORCB",
	"REV8",
	"BCLR",
	"BCLRI",
	"BEXT",
	"BEXTI",
	"BINV",
	"BINVI",
	"BSET",
	"BSETI",
	"WORD",
	"BEQZ",
	"BGEZ",
	"BGT",
	"BGTU",
	"BGTZ",
	"BLE",
	"BLEU",
	"BLEZ",
	"BLTZ",
	"BNEZ",
	"FABSD",
	"FABSS",
	"FNEGD",
	"FNEGS",
	"FNED",
	"FNES",
	"MOV",

	SUBL	$(delta & 0xFFFFFFFF), AX
	SBBL $(delta >> 32), DX

	// nano/100 = DX:AX
	// split into two decimal halves by div 1e9.
	// (decimal point is two spots over from correct place,
	// but we avoid overflow in the high word.)
	MOVL	$1000000000, CX
	DIVL	CX
	MOVL	AX, DI
	MOVL	DX, SI

	// DI = nano/100/1e9 = nano/1e11 = sec/100, DX = SI = nano/100%1e9
	// split DX into seconds and nanoseconds by div 1e7 magic multiply.
	MOVL	DX, AX

	j := v.Field(1)
	assert(i.Interface() == j.Interface())

	s := v.Field(2)
	t := v.Field(3)
	assert(s.Interface() == t.Interface())

	// make sure different values are different.
	// make sure whole word is being compared,
	// not just a single byte.
	i = v.Field(4)
	j = v.Field(5)
	assert(i.Interface() != j.Interface())

	i = v.Field(6)
	j = v.Field(7)
	assert(i.Interface() != j.Interface())

}

// mul sets y to y*H, where H is the GCM key, fixed during NewGCMWithNonceSize.
func (g *gcm) mul(y *gcmFieldElement) {
	var z gcmFieldElement

	for i := 0; i < 2; i++ {
		word := y.high
		if i == 1 {
			word = y.low
		}

		// Multiplication works by multiplying z by 16 and adding in
		// one of the precomputed multiples of H.
		for j := 0; j < 64; j += 4 {
			msw := z.high & 0xf
			z.high >>= 4

TEXT runtime·rtsigprocmask(SB),NOSPLIT|NOFRAME,$0-28
	MOVW	how+0(FP), A0
	MOV	new+8(FP), A1
	MOV	old+16(FP), A2
	MOVW	size+24(FP), A3
	MOV	$SYS_rt_sigprocmask, A7
	ECALL
	MOV	$-4096, T0
	BLTU	A0, T0, 2(PC)
	WORD	$0	// crash
	RET

// func rt_sigaction(sig uintptr, new, old *sigactiont, size uintptr) int32
TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36
	MOV	sig+0(FP), A0
	MOV	new+8(FP), A1
	MOV	old+16(FP), A2

//
//         .align 2
// local.dso_init:
//         ldr r0, .Lmoduledata
// .Lloadfrom:
//         ldr r0, [r0]
//         b runtime.addmoduledata@plt
// .align 2
// .Lmoduledata:
//         .word local.moduledata(GOT_PREL) + (. - (.Lloadfrom + 4))
// assembles to:
//
// 00000000 <local.dso_init>:
//    0:        e59f0004        ldr     r0, [pc, #4]    ; c <local.dso_init+0xc>

		if field.Tag.Get("param") == param {
			fValue := value.Field(i)
			return &fValue, field.Tag.Get("negatable") == "true"
		}
	}
	return nil, false
}

// wordRegex matches a single word or a quoted string (at the start of the string, or
// preceded by whitespace)
var wordRegex = regexp.MustCompile(`(?:^|\s)("[^"]*"|[^"]\S*)`)

// Used by ParseRule
var boolPtrType = reflect.PointerTo(reflect.TypeOf(true))

		the end of the term you are searching.
		<pre>Fess^100</pre>
	</dd>
	<dt>Fuzzy</dt>
	<dd>
		To do a fuzzy search use the "~" symbol at the end of a single word
		term. For example to search for a term similar in spelling to "Fess"
		use the fuzzy search:
		<pre>Fess~0.5</pre>
	</dd>