00000020  d7 06 a2 9b d3 01 0f 0d  23 53 7d 20 55 2b 67 4e  |........#S} U+gN|
00000030  8b 44 94 a5 25 ef b7 fb  e1 c7 85 e8 15 60 f9 d7  |.D..%........`..|
00000040  6d a4 3f 3d 42 d7 78 a6  41 49 b7 12 c0 13 00 00  |m.?=B.x.AI......|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 01 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|

00000170  46 2e 73 1a 07 12 be 6e  74 e1 8e 82 ca db a2 6d  |F.s....nt......m|
00000180  35 5b fc 4c 71 42 45 86  35 1c c0 dc 0d 4c 40 a8  |5[.LqBE.5....L@.|
00000190  c7 ea 4a b8 33 0b 30 e2  6d a4 82 dc 28 35 1f f2  |..J.3.0.m...(5..|
000001a0  ac 23 41 10 a4 d4 1a 40  28 4d ea db 32 d5 06 de  |.#A....@(M..2...|
000001b0  1e 37 91 77 34 ed b4 c8  f2 1c 44 de ee 2f dd af  |.7.w4.....D../..|

				// must be in .data.
				a4.Xsmclas = XMC_RW
			} else {
				// Read only data
				a4.Xsmclas = XMC_RO
			}
		} else if /*ty == sym.SDATA &&*/ strings.HasPrefix(ldr.SymName(x), "TOC.") && ctxt.IsExternal() {
			a4.Xsmclas = XMC_TC
		} else if ldr.SymName(x) == "TOC" {
			a4.Xsmclas = XMC_TC0
		} else {
			a4.Xsmclas = XMC_RW
		}
		if t == DataSym {
			a4.Xsmtyp |= XTY_SD
		} else {

00000090  06 01 00 2b 00 03 02 03  04 00 2d 00 02 01 01 00  |...+......-.....|
000000a0  33 00 47 00 45 00 17 00  41 04 63 03 f6 90 df 1f  |3.G.E...A.c.....|
000000b0  d0 03 96 24 21 3d e4 c0  5d 38 5f 53 85 a4 9c d8  |...$!=..]8_S....|
000000c0  f7 b0 9c 64 5f 53 c3 66  9b f5 e0 5a 60 0b b2 e8  |...d_S.f...Z`...|
000000d0  2b d0 6a a2 ff 1d 07 8b  5f a8 37 e4 74 35 15 b1  |+.j....._.7.t5..|

000000a0  17 03 03 00 17 5a aa bb  35 67 ec 83 da 8e 85 bd  |.....Z..5g......|
000000b0  ae a5 0d c9 8b cd 03 bf  96 2b 35 61 17 03 03 02  |.........+5a....|
000000c0  6d 85 0c 7c d5 ff 0f 77  0a a4 b7 97 aa d3 f7 af  |m..|...w........|
000000d0  4b 58 cb 24 4d 9f a6 d8  e2 c3 10 ce 3a 5d e4 cc  |KX.$M.......:]..|
000000e0  84 7d 1f 71 bd b6 25 0c  10 75 d3 8d b6 12 04 56  |.}.q..%..u.....V|

	MOVD	$0, R7
	MOVD	trap+0(FP), R1	// syscall entry
	SYSCALL
	MOVD	R2, r1+32(FP)
	MOVD	R3, r2+40(FP)
	RET

#define SYS_SOCKETCALL 102	/* from zsysnum_linux_s390x.go */

// func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
// Kernel interface gets call sub-number and pointer to a0.
TEXT ·socketcall(SB),NOSPLIT,$0-72
	BL	runtime·entersyscall(SB)
	MOVD	$SYS_SOCKETCALL, R1	// syscall entry

	// ppc64x/power8:`ADD`,`MOVWZ\s+\(R[0-9]+\),\sR[0-9]+`
	c3 := sw.w[1<<28]
	// ppc64x:`MOVWZ\s+\(R[0-9]+\)\(R[0-9]+\),\sR[0-9]+`
	d3 := sw.w[1<<29]
	// ppc64x:`MOVD\s+[0-9]+\(R[0-9]+\)`,-`ADD`
	a4 := sd.d[1<<10]
	// ppc64le/power10:`MOVD\s+[0-9]+\(R[0-9]+\)`,-`ADD`
	// ppc64x/power9:`ADD`,`MOVD\s+\(R[0-9]+\),\sR[0-9]+`
	// ppc64x/power8:`ADD`,`MOVD\s+\(R[0-9]+\),\sR[0-9]+`
	b4 := sd.d[1<<16]

00000030  d9 20 e9 d9 c1 9c 90 3b  f2 e6 57 af 04 e5 db 6b  |. .....;..W....k|
00000040  36 0b b5 b8 e2 a5 a4 bf  52 31 80 32 b9 da d9 32  |6.......R1.2...2|
00000050  36 e7 31 d3 22 78 12 ae  7a 80 ac fa 6d 49 38 16  |6.1."x..z...mI8.|
00000060  7e 51 5c e5 15 c0 58 7d  d6 77 d5 17 1b d9 a8 74  |~Q\...X}.w.....t|
00000070  be 93 25 54 84 a7 1a 93  1f 20 a4 49 eb 26 e7 8e  |..%T..... .I.&..|

000000f0  bb 29 07 30 ff f6 84 af  c4 cf c2 ed 90 99 5f 58  |.).0.........._X|
00000100  cb 3b 74                                          |.;t|
>>> Flow 2 (server to client)
00000000  16 03 03 00 7a 02 00 00  76 03 03 3d 39 60 81 a4  |....z...v..=9`..|
00000010  cc 92 5d fd 8b 21 58 da  2e 4c e2 70 2b 12 d2 8c  |..]..!X..L.p+...|
00000020  35 55 bc ba 79 c1 9e 6f  78 8c cf 20 00 00 00 00  |5U..y..ox.. ....|

const (
	// Coefficients for approximation to erf in |x| <= 0.85
	a0 = 1.1975323115670912564578e0
	a1 = 4.7072688112383978012285e1
	a2 = 6.9706266534389598238465e2
	a3 = 4.8548868893843886794648e3
	a4 = 1.6235862515167575384252e4
	a5 = 2.3782041382114385731252e4
	a6 = 1.1819493347062294404278e4
	a7 = 8.8709406962545514830200e2
	b0 = 1.0000000000000000000e0
	b1 = 4.2313330701600911252e1
	b2 = 6.8718700749205790830e2