000000a0  9c e3 55 36 70 a0 10 fc  53 7e 2d ae f1 02 d7 04  |..U6p...S~-.....|
000000b0  1f 4e 5d ed 33 29 99 04  54 8e 51 74 d5 2a 73 21  |.N].3)..T.Qt.*s!|
000000c0  4f bf 8b 0c 04 b2 f2 d4  3e a7 f6 ee 8b fb 3a 0b  |O.......>.....:.|
000000d0  86 27 7c a7 bb 32                                 |.'|..2|
>>> Flow 4 (server to client)
00000000  16 03 03 00 83 04 00 00  7f 00 00 00 00 00 79 00  |..............y.|

// ---------------------------
// num | A0          | A7
// a1  | A1          | A0
// a2  | A2          | A1
// a3  | A3          | A2
// a4  | A4          | A3
// a5  | A5          | A4
// a6  | A6          | A5
//
// r1  | A0          | A0
// r2  | A1          | A1
// err | A2          | part of A0
TEXT ·Syscall6<ABIInternal>(SB),NOSPLIT,$0-80
	MOV	A0, A7
	MOV	A1, A0
	MOV	A2, A1
	MOV	A3, A2
	MOV	A4, A3

00000370  f6 21 a0 c2 1f f3 fa 34  2a 9e b9 8a 0c 72 81 02  |.!.....4*....r..|
00000380  66 a7 da 6b d6 e2 aa 99  6d 4b 42 f5 19 83 52 89  |f..k....mKB...R.|
00000390  9a 26 56 5d d5 a4 a7 bd  ad b4 10 db ee 87 1d 15  |.&V]............|
000003a0  15 df 30 95 d8 61 e2 c4  88 47 e1 91 e3 85 33 fe  |..0..a...G....3.|
000003b0  7d 02 0c 22 6b 52 22 a7  cf bf bf f0 9d 25 65 e0  |}.."kR"......%e.|

//

// func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int64);
TEXT	·Syscall9(SB),NOSPLIT,$32-104
	NO_LOCAL_POINTERS
	CALL	runtime·entersyscall<ABIInternal>(SB)
	MOVQ	num+0(FP), AX	// syscall entry
	MOVQ	a1+8(FP), DI
	MOVQ	a2+16(FP), SI
	MOVQ	a3+24(FP), DX
	MOVQ	a4+32(FP), R10
	MOVQ	a5+40(FP), R8
	MOVQ	a6+48(FP), R9
	MOVQ	a7+56(FP), R11
	MOVQ	a8+64(FP), R12
	MOVQ	a9+72(FP), R13

00000280  8a f4 ef f8 78 5e ad c2  ea 52 ed 30 a2 4c 50 d2  |....x^...R.0.LP.|
00000290  8a 4e 9e 1b 2a e6 04 86  e2 b8 84 f3 fe 6e 34 78  |.N..*........n4x|
000002a0  28 fb 97 d7 30 66 a7 20  57 c1 ca e4 0c 7f a0 2c  |(...0f. W......,|
000002b0  4e e1 87 ee 3f cc fe 18  a7 49 a7 70 45 94 73 8c  |N...?....I.pE.s.|
000002c0  66 b8 b1 54 58 1a 39 3d  16 40 da e5 e5 51 c6 07  |f..TX.9=.@...Q..|

//

// func Syscall9(trap trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr);
// Actually Syscall8 but the rest of the code expects it to be named Syscall9.
TEXT ·Syscall9(SB),NOSPLIT,$28-52
	NO_LOCAL_POINTERS
	JAL	runtime·entersyscall(SB)
	MOVW	a1+4(FP), R4
	MOVW	a2+8(FP), R5
	MOVW	a3+12(FP), R6
	MOVW	a4+16(FP), R7
	MOVW	a5+20(FP), R8
	MOVW	a6+24(FP), R9
	MOVW	a7+28(FP), R10
	MOVW	a8+32(FP), R11
	MOVW	R8, 16(R29)

00000100  cb 3b 74                                          |.;t|
>>> Flow 2 (server to client)
00000000  16 03 03 00 7a 02 00 00  76 03 03 48 e6 a7 a9 4c  |....z...v..H...L|
00000010  c3 a7 cc 18 b7 71 7d ed  c5 6a cb ca b5 9f 00 fd  |.....q}..j......|
00000020  f8 2c ac 9c 1f 24 27 b9  c6 55 8e 20 00 00 00 00  |.,...$'..U. ....|

TEXT ·rawVforkSyscall(SB),NOSPLIT|NOFRAME,$0-48
	MOV	a1+8(FP), A0
	MOV	a2+16(FP), A1
	MOV	a3+24(FP), A2
	MOV	ZERO, A3
	MOV	ZERO, A4
	MOV	ZERO, A5
	MOV	trap+0(FP), A7	// syscall entry
	ECALL
	MOV	$-4096, T0
	BLTU	T0, A0, err
	MOV	A0, r1+32(FP)	// r1
	MOV	ZERO, err+40(FP)	// errno
	RET
err:
	MOV	$-1, T0
	MOV	T0, r1+32(FP)	// r1
	SUB	A0, ZERO, A0

>>> Flow 4 (server to client)
00000000  17 03 03 00 1e 1e 5c 6b  1e dd ea a2 1d bd 6e 66  |......\k......nf|
00000010  0b 99 e0 91 0b c1 3e 9b  49 e7 40 0d a7 7a bb 31  |......>.I.@..z.1|
00000020  4c 5c c2 17 03 03 00 13  a5 98 a7 8a 05 a7 bb 60  |L\.............`|

00000180  75 fe a7 34 20 0e f6 9c  a9 79 0f 9e 05 fc 5a 4e  |u..4 ....y....ZN|
00000190  76 7c 13 0e a7 6a 1e 4a  f7 ba a7 a8 18 8d 89 4a  |v|...j.J.......J|
000001a0  ad 34 40 81 2c e9 07 18  ba 95 48 dd 11 e7 11 0b  |.4@.,.....H.....|
000001b0  27 fe 9f 3c e6 44 72 16  89 dc 7d 8e 22 cf 4d 96  |'..<.Dr...}.".M.|
000001c0  60 3c 78 7a ed 6e a9 ba  d1 c3 59 b7 a7 32 bc 44  |`<xz.n....Y..2.D|