_SecTrustCopyCertificateChain (dyld_shared_cache 25C56)

Security.asm

_SecTrustEvaluateIfNecessary:
0x1839ff360:  7f 23 03 d5   pacibsp
0x1839ff364:  ff 03 03 d1   sub	sp, sp, #0xc0
0x1839ff368:  e9 23 08 6d   stp	d9, d8, [sp, #0x80]
0x1839ff36c:  f6 57 09 a9   stp	x22, x21, [sp, #0x90]
0x1839ff370:  f4 4f 0a a9   stp	x20, x19, [sp, #0xa0]
0x1839ff374:  fd 7b 0b a9   stp	fp, lr, [sp, #0xb0]
0x1839ff378:  fd c3 02 91   add	fp, sp, #0xb0
0x1839ff37c:  f3 03 00 aa   mov	x19, x0
0x1839ff380:  b4 43 01 d1   sub	x20, fp, #0x50
0x1839ff384:  bf 53 3b a9   stp	xzr, x20, [fp, #-0x50]
0x1839ff388:  88 0f 00 b0   adrp	x8, 0x183bf0000
0x1839ff38c:  08 61 43 fd   ldr	d8, [x8, #0x6c0]
0x1839ff390:  a8 03 1c fc   stur	d8, [fp, #-0x40]
0x1839ff394:  e8 f3 01 32   mov	w8, #0xaaaaaaaa
0x1839ff398:  a8 83 1c b8   stur	w8, [fp, #-0x38]
0x1839ff39c:  f1 a2 07 94   bl	j__pthread_main_np
0x1839ff3a0:  1f 04 00 71   cmp	w0, #0x1
0x1839ff3a4:  41 01 00 54   b.ne	0x1839ff3cc
0x1839ff3a8:  48 27 34 f0   adrp	x8, 0x1ebeea000
0x1839ff3ac:  08 55 46 f9   ldr	x8, [x8, #0xca8] ; SecTrustEvaluateThreadRuntimeCheck.queueToken
0x1839ff3b0:  1f 05 00 b1   cmn	x8, #0x1
0x1839ff3b4:  21 06 00 54   b.ne	0x1839ff478
0x1839ff3b8:  48 27 34 f0   adrp	x8, 0x1ebeea000
0x1839ff3bc:  00 59 46 f9   ldr	x0, [x8, #0xcb0] ; SecTrustEvaluateThreadRuntimeCheck.runtimeLogQueue
0x1839ff3c0:  81 09 36 b0   adrp	x1, 0x1efb30000
0x1839ff3c4:  21 c0 02 91   add	x1, x1, #0xb0 ; __block_literal_global.565
0x1839ff3c8:  96 9f 07 94   bl	j__dispatch_channel_async
0x1839ff3cc:  f5 03 01 91   add	x21, sp, #0x40
0x1839ff3d0:  ff 57 04 a9   stp	xzr, x21, [sp, #0x40]
0x1839ff3d4:  e8 2b 00 fd   str	d8, [sp, #0x50]
0x1839ff3d8:  e0 03 13 aa   mov	x0, x19
0x1839ff3dc:  8e ff ff 97   bl	_SecTrustGetVerifyTime
0x1839ff3e0:  e0 2f 00 fd   str	d0, [sp, #0x58]
0x1839ff3e4:  60 46 40 f9   ldr	x0, [x19, #0x88]
0x1839ff3e8:  e8 23 00 91   add	x8, sp, #0x8
0x1839ff3ec:  50 2f 32 b0   adrp	x16, 0x1e7fe8000
0x1839ff3f0:  10 36 40 f9   ldr	x16, [x16, #0x68] ; _ptr.__NSStackBlock__
0x1839ff3f4:  f1 03 08 aa   mov	x17, x8
0x1839ff3f8:  31 5c ed f2   movk	x17, #0x6ae1, lsl #0x30
0x1839ff3fc:  30 0a c1 da   pacda	x16, x17
0x1839ff400:  f0 07 00 f9   str	x16, [sp, #0x8]
0x1839ff404:  89 0f 00 b0   adrp	x9, 0x183bf0000
0x1839ff408:  20 65 43 fd   ldr	d0, [x9, #0x6c8]
0x1839ff40c:  e0 0b 00 fd   str	d0, [sp, #0x10]
0x1839ff410:  08 41 00 91   add	x8, x8, #0x10
0x1839ff414:  10 00 00 90   adrp	x16, 0x1839ff000
0x1839ff418:  10 42 12 91   add	x16, x16, #0x490 ; ___SecTrustEvaluateIfNecessary_block_invoke
0x1839ff41c:  10 01 c1 da   pacia	x16, x8
0x1839ff420:  88 09 36 b0   adrp	x8, 0x1efb30000
0x1839ff424:  08 81 01 91   add	x8, x8, #0x60 ; __block_descriptor_tmp.558
0x1839ff428:  f0 a3 01 a9   stp	x16, x8, [sp, #0x18]
0x1839ff42c:  f4 4f 03 a9   stp	x20, x19, [sp, #0x30]
0x1839ff430:  f5 17 00 f9   str	x21, [sp, #0x28]
0x1839ff434:  e1 23 00 91   add	x1, sp, #0x8
0x1839ff438:  16 a0 07 94   bl	j__dispatch_sync
0x1839ff43c:  a8 83 5b f8   ldur	x8, [fp, #-0x48]
0x1839ff440:  13 19 40 b9   ldr	w19, [x8, #0x18]
0x1839ff444:  e0 03 01 91   add	x0, sp, #0x40
0x1839ff448:  01 01 80 52   mov	w1, #0x8
0x1839ff44c:  d5 99 07 94   bl	j___Block_object_dispose
0x1839ff450:  a0 43 01 d1   sub	x0, fp, #0x50
0x1839ff454:  01 01 80 52   mov	w1, #0x8
0x1839ff458:  d2 99 07 94   bl	j___Block_object_dispose
0x1839ff45c:  e0 03 13 aa   mov	x0, x19
0x1839ff460:  fd 7b 4b a9   ldp	fp, lr, [sp, #0xb0]
0x1839ff464:  f4 4f 4a a9   ldp	x20, x19, [sp, #0xa0]
0x1839ff468:  f6 57 49 a9   ldp	x22, x21, [sp, #0x90]
0x1839ff46c:  e9 23 48 6d   ldp	d9, d8, [sp, #0x80]
0x1839ff470:  ff 03 03 91   add	sp, sp, #0xc0
0x1839ff474:  ff 0f 5f d6   retab
0x1839ff478:  40 27 34 f0   adrp	x0, 0x1ebeea000
0x1839ff47c:  00 a0 32 91   add	x0, x0, #0xca8 ; SecTrustEvaluateThreadRuntimeCheck.queueToken
0x1839ff480:  81 09 36 b0   adrp	x1, 0x1efb30000
0x1839ff484:  21 40 02 91   add	x1, x1, #0x90 ; __block_literal_global.561
0x1839ff488:  aa 9f 07 94   bl	j__dispatch_once
0x1839ff48c:  cb ff ff 17   b	0x1839ff3b8

___SecTrustEvaluateIfNecessary_block_invoke:
0x1839ff490:  7f 23 03 d5   pacibsp
0x1839ff494:  ff 83 01 d1   sub	sp, sp, #0x60
0x1839ff498:  f4 4f 04 a9   stp	x20, x19, [sp, #0x40]
0x1839ff49c:  fd 7b 05 a9   stp	fp, lr, [sp, #0x50]
0x1839ff4a0:  fd 43 01 91   add	fp, sp, #0x50
0x1839ff4a4:  f3 03 00 aa   mov	x19, x0
0x1839ff4a8:  00 18 40 f9   ldr	x0, [x0, #0x30]
0x1839ff4ac:  68 12 40 f9   ldr	x8, [x19, #0x20]
0x1839ff4b0:  08 05 40 f9   ldr	x8, [x8, #0x8]
0x1839ff4b4:  00 0d 40 fd   ldr	d0, [x8, #0x18]
0x1839ff4b8:  44 00 00 94   bl	_SecTrustIsTrustResultValid
0x1839ff4bc:  a0 00 00 34   cbz	w0, 0x1839ff4d0
0x1839ff4c0:  68 16 40 f9   ldr	x8, [x19, #0x28]
0x1839ff4c4:  08 05 40 f9   ldr	x8, [x8, #0x8]
0x1839ff4c8:  1f 19 00 b9   str	wzr, [x8, #0x18]
0x1839ff4cc:  3b 00 00 14   b	0x1839ff5b8
0x1839ff4d0:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff4d4:  e9 00 80 52   mov	w9, #0x7
0x1839ff4d8:  09 71 00 b9   str	w9, [x8, #0x70]
0x1839ff4dc:  00 25 40 f9   ldr	x0, [x8, #0x48]
0x1839ff4e0:  80 00 00 b4   cbz	x0, 0x1839ff4f0
0x1839ff4e4:  1f 25 00 f9   str	xzr, [x8, #0x48]
0x1839ff4e8:  86 97 07 94   bl	j__CFRelease
0x1839ff4ec:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff4f0:  00 2d 40 f9   ldr	x0, [x8, #0x58]
0x1839ff4f4:  80 00 00 b4   cbz	x0, 0x1839ff504
0x1839ff4f8:  1f 2d 00 f9   str	xzr, [x8, #0x58]
0x1839ff4fc:  81 97 07 94   bl	j__CFRelease
0x1839ff500:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff504:  00 31 40 f9   ldr	x0, [x8, #0x60]
0x1839ff508:  80 00 00 b4   cbz	x0, 0x1839ff518
0x1839ff50c:  1f 31 00 f9   str	xzr, [x8, #0x60]
0x1839ff510:  7c 97 07 94   bl	j__CFRelease
0x1839ff514:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff518:  00 3d 40 f9   ldr	x0, [x8, #0x78]
0x1839ff51c:  a0 00 00 b4   cbz	x0, 0x1839ff530
0x1839ff520:  4c a0 07 94   bl	j__free
0x1839ff524:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff528:  1f 3d 00 f9   str	xzr, [x8, #0x78]
0x1839ff52c:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff530:  00 41 40 f9   ldr	x0, [x8, #0x80]
0x1839ff534:  a0 00 00 b4   cbz	x0, 0x1839ff548
0x1839ff538:  46 a0 07 94   bl	j__free
0x1839ff53c:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff540:  1f 41 00 f9   str	xzr, [x8, #0x80]
0x1839ff544:  68 1a 40 f9   ldr	x8, [x19, #0x30]
0x1839ff548:  e9 23 00 91   add	x9, sp, #0x8
0x1839ff54c:  50 2f 32 b0   adrp	x16, 0x1e7fe8000
0x1839ff550:  10 36 40 f9   ldr	x16, [x16, #0x68] ; _ptr.__NSStackBlock__
0x1839ff554:  f1 03 09 aa   mov	x17, x9
0x1839ff558:  31 5c ed f2   movk	x17, #0x6ae1, lsl #0x30
0x1839ff55c:  30 0a c1 da   pacda	x16, x17
0x1839ff560:  f0 07 00 f9   str	x16, [sp, #0x8]
0x1839ff564:  8a 0f 00 b0   adrp	x10, 0x183bf0000
0x1839ff568:  40 65 43 fd   ldr	d0, [x10, #0x6c8]
0x1839ff56c:  e0 0b 00 fd   str	d0, [sp, #0x10]
0x1839ff570:  29 41 00 91   add	x9, x9, #0x10
0x1839ff574:  10 00 00 90   adrp	x16, 0x1839ff000
0x1839ff578:  10 52 1b 91   add	x16, x16, #0x6d4 ; ___SecTrustEvaluateIfNecessary_block_invoke_2
0x1839ff57c:  30 01 c1 da   pacia	x16, x9
0x1839ff580:  89 09 36 b0   adrp	x9, 0x1efb30000
0x1839ff584:  29 c1 00 91   add	x9, x9, #0x30 ; __block_descriptor_tmp.555
0x1839ff588:  f0 a7 01 a9   stp	x16, x9, [sp, #0x18]
0x1839ff58c:  e8 1f 00 f9   str	x8, [sp, #0x38]
0x1839ff590:  60 0a c0 3d   ldr	q0, [x19, #0x20]
0x1839ff594:  00 40 00 6e   ext	v0.16b, v0.16b, v0.16b, #0x8
0x1839ff598:  e0 83 82 3c   stur	q0, [sp, #0x28]
0x1839ff59c:  20 f5 ff 90   adrp	x0, 0x1838a3000
0x1839ff5a0:  00 00 00 91   add	x0, x0, #0 ; "\xcf\xfa\xed\xfe\f"
0x1839ff5a4:  c1 11 00 f0   adrp	x1, 0x183c3a000
0x1839ff5a8:  21 18 0e 91   add	x1, x1, #0x386 ; "SecTrustEvaluateIfNecessary"
0x1839ff5ac:  e3 23 00 91   add	x3, sp, #0x8
0x1839ff5b0:  02 00 80 52   mov	w2, #0
0x1839ff5b4:  ff 9a 07 94   bl	j___os_activity_initiate
0x1839ff5b8:  fd 7b 45 a9   ldp	fp, lr, [sp, #0x50]
0x1839ff5bc:  f4 4f 44 a9   ldp	x20, x19, [sp, #0x40]
0x1839ff5c0:  ff 83 01 91   add	sp, sp, #0x60
0x1839ff5c4:  ff 0f 5f d6   retab

_SecTrustIsTrustResultValid:
0x1839ff5c8:  08 70 40 b9   ldr	w8, [x0, #0x70]
0x1839ff5cc:  c8 02 00 34   cbz	w8, 0x1839ff624
0x1839ff5d0:  7f 23 03 d5   pacibsp
0x1839ff5d4:  e9 23 bc 6d   stp	d9, d8, [sp, #-0x40]!
0x1839ff5d8:  f6 57 01 a9   stp	x22, x21, [sp, #0x10]
0x1839ff5dc:  f4 4f 02 a9   stp	x20, x19, [sp, #0x20]
0x1839ff5e0:  fd 7b 03 a9   stp	fp, lr, [sp, #0x30]
0x1839ff5e4:  fd c3 00 91   add	fp, sp, #0x30
0x1839ff5e8:  09 40 60 1e   fmov	d9, d0
0x1839ff5ec:  f3 03 00 aa   mov	x19, x0
0x1839ff5f0:  0c 95 07 94   bl	j__CFAbsoluteTimeGetCurrent
0x1839ff5f4:  08 40 60 1e   fmov	d8, d0
0x1839ff5f8:  88 0f 00 d0   adrp	x8, 0x183bf1000
0x1839ff5fc:  00 41 42 fd   ldr	d0, [x8, #0x480]
0x1839ff600:  00 29 60 1e   fadd	d0, d8, d0
0x1839ff604:  88 0f 00 d0   adrp	x8, 0x183bf1000
0x1839ff608:  01 45 42 fd   ldr	d1, [x8, #0x488]
0x1839ff60c:  01 29 61 1e   fadd	d1, d8, d1
0x1839ff610:  00 20 69 1e   fcmp	d0, d9
0x1839ff614:  20 54 69 1e   fccmp	d1, d9, #0, pl
0x1839ff618:  ad 00 00 54   b.le	0x1839ff62c
0x1839ff61c:  20 00 80 52   mov	w0, #0x1
0x1839ff620:  27 00 00 14   b	0x1839ff6bc
0x1839ff624:  00 00 80 52   mov	w0, #0
0x1839ff628:  c0 03 5f d6   ret
0x1839ff62c:  74 32 40 f9   ldr	x20, [x19, #0x60]
0x1839ff630:  54 04 00 b4   cbz	x20, 0x1839ff6b8
0x1839ff634:  a1 0a 36 90   adrp	x1, 0x1efb53000
0x1839ff638:  21 60 2e 91   add	x1, x1, #0xb98 ; "TrustResultNotBefore"
0x1839ff63c:  e0 03 14 aa   mov	x0, x20
0x1839ff640:  80 96 07 94   bl	j__CFDictionaryGetValue
0x1839ff644:  f3 03 00 aa   mov	x19, x0
0x1839ff648:  a1 0a 36 90   adrp	x1, 0x1efb53000
0x1839ff64c:  21 e0 2e 91   add	x1, x1, #0xbb8 ; "TrustResultNotAfter"
0x1839ff650:  e0 03 14 aa   mov	x0, x20
0x1839ff654:  7b 96 07 94   bl	j__CFDictionaryGetValue
0x1839ff658:  f4 03 00 aa   mov	x20, x0
0x1839ff65c:  00 00 80 52   mov	w0, #0
0x1839ff660:  f3 02 00 b4   cbz	x19, 0x1839ff6bc
0x1839ff664:  d4 02 00 b4   cbz	x20, 0x1839ff6bc
0x1839ff668:  e0 03 13 aa   mov	x0, x19
0x1839ff66c:  b5 96 07 94   bl	j__CFGetTypeID
0x1839ff670:  f5 03 00 aa   mov	x21, x0
0x1839ff674:  47 96 07 94   bl	j__CFDateGetTypeID
0x1839ff678:  bf 02 00 eb   cmp	x21, x0
0x1839ff67c:  e1 01 00 54   b.ne	0x1839ff6b8
0x1839ff680:  e0 03 14 aa   mov	x0, x20
0x1839ff684:  af 96 07 94   bl	j__CFGetTypeID
0x1839ff688:  f5 03 00 aa   mov	x21, x0
0x1839ff68c:  41 96 07 94   bl	j__CFDateGetTypeID
0x1839ff690:  bf 02 00 eb   cmp	x21, x0
0x1839ff694:  21 01 00 54   b.ne	0x1839ff6b8
0x1839ff698:  e0 03 14 aa   mov	x0, x20
0x1839ff69c:  35 96 07 94   bl	j__CFDateGetAbsoluteTime
0x1839ff6a0:  00 21 60 1e   fcmp	d8, d0
0x1839ff6a4:  a5 00 00 54   b.pl	0x1839ff6b8
0x1839ff6a8:  e0 03 13 aa   mov	x0, x19
0x1839ff6ac:  31 96 07 94   bl	j__CFDateGetAbsoluteTime
0x1839ff6b0:  00 21 60 1e   fcmp	d8, d0
0x1839ff6b4:  4c fb ff 54   b.gt	0x1839ff61c
0x1839ff6b8:  00 00 80 52   mov	w0, #0
0x1839ff6bc:  fd 7b 43 a9   ldp	fp, lr, [sp, #0x30]
0x1839ff6c0:  f4 4f 42 a9   ldp	x20, x19, [sp, #0x20]
0x1839ff6c4:  f6 57 41 a9   ldp	x22, x21, [sp, #0x10]
0x1839ff6c8:  e9 23 c4 6c   ldp	d9, d8, [sp], #0x40
0x1839ff6cc:  ff 23 03 d5   autibsp
0x1839ff6d0:  c0 03 5f d6   ret

_SecTrustCopyCertificateChain:
0x183a03e98:  7f 23 03 d5   pacibsp
0x183a03e9c:  ff c3 01 d1   sub	sp, sp, #0x70
0x183a03ea0:  f4 4f 05 a9   stp	x20, x19, [sp, #0x50]
0x183a03ea4:  fd 7b 06 a9   stp	fp, lr, [sp, #0x60]
0x183a03ea8:  fd 83 01 91   add	fp, sp, #0x60
0x183a03eac:  f3 03 00 aa   mov	x19, x0
0x183a03eb0:  60 04 00 b4   cbz	x0, 0x183a03f3c
0x183a03eb4:  f4 c3 00 91   add	x20, sp, #0x30
0x183a03eb8:  ff 53 03 a9   stp	xzr, x20, [sp, #0x30]
0x183a03ebc:  68 0f 00 b0   adrp	x8, 0x183bf0000
0x183a03ec0:  00 61 43 fd   ldr	d0, [x8, #0x6c0]
0x183a03ec4:  e0 23 00 fd   str	d0, [sp, #0x40]
0x183a03ec8:  ff 27 00 f9   str	xzr, [sp, #0x48]
0x183a03ecc:  e0 03 13 aa   mov	x0, x19
0x183a03ed0:  24 ed ff 97   bl	_SecTrustEvaluateIfNecessary
0x183a03ed4:  60 46 40 f9   ldr	x0, [x19, #0x88]
0x183a03ed8:  e8 03 00 91   mov	x8, sp
0x183a03edc:  30 2f 32 b0   adrp	x16, 0x1e7fe8000
0x183a03ee0:  10 36 40 f9   ldr	x16, [x16, #0x68] ; _ptr.__NSStackBlock__
0x183a03ee4:  f1 03 08 aa   mov	x17, x8
0x183a03ee8:  31 5c ed f2   movk	x17, #0x6ae1, lsl #0x30
0x183a03eec:  30 0a c1 da   pacda	x16, x17
0x183a03ef0:  f0 03 00 f9   str	x16, [sp]
0x183a03ef4:  69 0f 00 b0   adrp	x9, 0x183bf0000
0x183a03ef8:  20 65 43 fd   ldr	d0, [x9, #0x6c8]
0x183a03efc:  e0 07 00 fd   str	d0, [sp, #0x8]
0x183a03f00:  08 41 00 91   add	x8, x8, #0x10
0x183a03f04:  69 09 36 90   adrp	x9, 0x1efb2f000
0x183a03f08:  29 c1 2f 91   add	x9, x9, #0xbf0 ; __block_descriptor_tmp.359
0x183a03f0c:  10 00 00 90   adrp	x16, 0x183a03000
0x183a03f10:  10 42 3d 91   add	x16, x16, #0xf50 ; ___SecTrustCopyCertificateChain_block_invoke
0x183a03f14:  10 01 c1 da   pacia	x16, x8
0x183a03f18:  f0 27 01 a9   stp	x16, x9, [sp, #0x10]
0x183a03f1c:  f4 4f 02 a9   stp	x20, x19, [sp, #0x20]
0x183a03f20:  e1 03 00 91   mov	x1, sp
0x183a03f24:  5b 8d 07 94   bl	j__dispatch_sync
0x183a03f28:  e8 1f 40 f9   ldr	x8, [sp, #0x38]
0x183a03f2c:  13 0d 40 f9   ldr	x19, [x8, #0x18]
0x183a03f30:  e0 c3 00 91   add	x0, sp, #0x30
0x183a03f34:  01 01 80 52   mov	w1, #0x8
0x183a03f38:  1a 87 07 94   bl	j___Block_object_dispose
0x183a03f3c:  e0 03 13 aa   mov	x0, x19
0x183a03f40:  fd 7b 46 a9   ldp	fp, lr, [sp, #0x60]
0x183a03f44:  f4 4f 45 a9   ldp	x20, x19, [sp, #0x50]
0x183a03f48:  ff c3 01 91   add	sp, sp, #0x70
0x183a03f4c:  ff 0f 5f d6   retab

___SecTrustCopyCertificateChain_block_invoke:
0x183a03f50:  7f 23 03 d5   pacibsp
0x183a03f54:  f4 4f be a9   stp	x20, x19, [sp, #-0x20]!
0x183a03f58:  fd 7b 01 a9   stp	fp, lr, [sp, #0x10]
0x183a03f5c:  fd 43 00 91   add	fp, sp, #0x10
0x183a03f60:  f3 03 00 aa   mov	x19, x0
0x183a03f64:  08 14 40 f9   ldr	x8, [x0, #0x28]
0x183a03f68:  00 25 40 f9   ldr	x0, [x8, #0x48]
0x183a03f6c:  60 01 00 b4   cbz	x0, 0x183a03f98
0x183a03f70:  ec 82 07 94   bl	j__CFArrayGetCount
0x183a03f74:  1f 04 00 f1   cmp	x0, #0x1
0x183a03f78:  0b 01 00 54   b.lt	0x183a03f98
0x183a03f7c:  68 16 40 f9   ldr	x8, [x19, #0x28]
0x183a03f80:  01 25 40 f9   ldr	x1, [x8, #0x48]
0x183a03f84:  00 00 80 d2   mov	x0, #0
0x183a03f88:  d6 82 07 94   bl	j__CFArrayCreateCopy
0x183a03f8c:  68 12 40 f9   ldr	x8, [x19, #0x20]
0x183a03f90:  08 05 40 f9   ldr	x8, [x8, #0x8]
0x183a03f94:  00 0d 00 f9   str	x0, [x8, #0x18]
0x183a03f98:  fd 7b 41 a9   ldp	fp, lr, [sp, #0x10]
0x183a03f9c:  f4 4f c2 a8   ldp	x20, x19, [sp], #0x20
0x183a03fa0:  ff 0f 5f d6   retab