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fabric: UTF-8 decoder (DECODE-UTF8)

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Punch list §25 item 4.3.6a complete.
capsules/fabric.4th blocks 4918-4920: UTF8-SEQ-LEN/UTF8-CONT? verbatim
from §27.6.2, DECODE-UTF8 dispatching to four UTF8-ASSEMBLE-N helpers
(1/2/3/4-byte). Factored into helpers after the single-word draft hit
mkcapsule's real 64-char x 16-line block limit. Verified live on
amd64: a 6-byte test buffer (ASCII + deg-sign + em-dash) decoded to
65/176/8212 across three sequential calls, exact match against
hand-computed codepoints, buffer fully consumed. Three-arch acceptance
boot clean, Stadium conservation unaffected.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Robert Allan James
2026-08-09 19:00:36 -04:00
co-authored by Claude Sonnet 5
parent 82e948afe9
commit 24d6b9e20e
13 changed files with 54530 additions and 111 deletions
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experiments/bare_metal/latest/riscv64.csv
+22 -22
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@@ -66,30 +66,30 @@ tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_
7,70000,10000,0,0,228,32,8,4096,210,0,0,22,65536,0,0,65536,0,0
8,80000,10000,0,0,256,34,9,4096,466,0,0,29,65536,0,0,65536,0,0
9,90000,10000,0,0,256,36,10,4096,722,0,0,37,65536,0,0,65536,0,0
10,100000,10000,0,0,256,36,11,4096,978,0,0,45,65536,0,0,65536,0,0
10,100000,10000,0,0,256,36,11,4096,978,0,0,44,65536,0,0,65536,0,0
11,110000,10000,0,0,256,36,11,4096,1234,0,0,52,65536,0,0,65536,0,0
12,120000,10000,0,0,256,36,12,4096,1490,0,0,60,65536,0,0,65536,0,0
12,120000,10000,0,0,256,36,12,4096,1490,0,0,59,65536,0,0,65536,0,0
13,130000,10000,0,0,256,37,12,4096,1746,0,0,67,65536,0,0,65536,0,0
14,140000,10000,0,0,230,39,12,4096,1949,0,0,74,65536,0,0,65536,0,0
15,150000,10000,0,0,256,39,13,4096,2204,0,0,81,65536,0,0,65536,0,0
15,150000,10000,0,0,256,39,13,4096,2204,0,0,82,65536,0,0,65536,0,0
16,160000,10000,0,0,256,39,14,4096,2459,0,0,89,65536,0,0,65536,0,0
17,170000,10000,0,0,256,39,15,4096,2713,0,0,96,65536,0,0,65536,0,0
18,180000,10000,0,0,256,39,15,4096,2969,0,0,103,65536,0,0,65536,0,0
19,190000,10000,0,0,256,39,16,4096,3224,0,0,113,65536,0,1,65536,0,0
20,200000,10000,0,0,256,41,17,4096,3480,0,0,120,65536,0,1,65536,0,0
21,210000,10000,0,0,256,41,17,4096,3736,0,0,128,65536,0,1,65536,0,0
22,220000,10000,0,0,256,41,18,4096,3992,0,0,135,65536,0,1,65536,0,0
23,230000,10000,0,0,256,41,19,4096,4096,0,0,143,65536,0,1,65536,0,0
24,240000,10000,0,0,256,41,20,4096,4096,0,0,151,65536,0,1,65536,0,0
25,250000,10000,0,0,256,43,20,2048,2048,0,0,158,65536,0,1,65536,0,0
26,260000,10000,0,0,256,45,21,2048,2048,0,0,166,65536,0,1,65536,0,0
27,270000,10000,0,0,256,45,22,1024,1024,0,0,173,65536,0,1,65536,0,0
28,280000,10000,0,0,256,45,23,1024,1024,0,0,180,65536,0,1,65536,0,0
29,290000,10000,0,0,256,45,24,512,512,0,0,188,65536,0,1,65536,0,0
30,300000,10000,0,0,256,45,24,512,512,0,0,195,65536,0,1,65536,0,0
31,310000,10000,0,0,256,45,25,256,256,0,0,203,65536,0,1,65536,0,0
32,320000,10000,0,0,255,45,26,256,256,0,0,210,65536,0,1,65536,0,0
33,330000,10000,0,0,256,45,27,256,256,0,0,219,65536,0,1,65536,0,0
34,340000,10000,0,0,256,45,27,256,256,0,0,227,65536,0,1,65536,0,0
35,350000,10000,0,0,256,45,28,256,256,0,0,235,65536,0,1,65536,0,0
36,360000,10000,0,0,256,45,29,256,256,0,0,242,65536,0,1,65536,0,0
18,180000,10000,0,0,256,39,15,4096,2969,0,0,104,65536,0,0,65536,0,0
19,190000,10000,0,0,256,39,16,4096,3224,0,0,114,65536,0,1,65536,0,0
20,200000,10000,0,0,256,41,17,4096,3480,0,0,121,65536,0,1,65536,0,0
21,210000,10000,0,0,256,41,17,4096,3736,0,0,129,65536,0,1,65536,0,0
22,220000,10000,0,0,256,41,18,4096,3992,0,0,136,65536,0,1,65536,0,0
23,230000,10000,0,0,256,41,19,4096,4096,0,0,144,65536,0,1,65536,0,0
24,240000,10000,0,0,256,41,20,4096,4096,0,0,152,65536,0,1,65536,0,0
25,250000,10000,0,0,256,43,20,2048,2048,0,0,160,65536,0,1,65536,0,0
26,260000,10000,0,0,256,45,21,2048,2048,0,0,167,65536,0,1,65536,0,0
27,270000,10000,0,0,256,45,22,1024,1024,0,0,174,65536,0,1,65536,0,0
28,280000,10000,0,0,256,45,23,1024,1024,0,0,182,65536,0,1,65536,0,0
29,290000,10000,0,0,256,45,24,512,512,0,0,189,65536,0,1,65536,0,0
30,300000,10000,0,0,256,45,24,512,512,0,0,197,65536,0,1,65536,0,0
31,310000,10000,0,0,256,45,25,256,256,0,0,204,65536,0,1,65536,0,0
32,320000,10000,0,0,255,45,26,256,256,0,0,212,65536,0,1,65536,0,0
33,330000,10000,0,0,256,45,27,256,256,0,0,221,65536,0,1,65536,0,0
34,340000,10000,0,0,256,45,27,256,256,0,0,228,65536,0,1,65536,0,0
35,350000,10000,0,0,256,45,28,256,256,0,0,236,65536,0,1,65536,0,0
36,360000,10000,0,0,256,45,29,256,256,0,0,243,65536,0,1,65536,0,0
1 tick_number elapsed_ns tick_interval_ns cache_hits_delta bucket_hits_delta word_executions_delta hot_word_count avg_word_heat_q48 window_width actual_window_size predicted_label_hits jitter_bits apic_ticks time_trust_q48 variance_q48 vm_call_depth_max hera_heat_q48 hermes_heat_q48 artemis_heat_q48
66 7 70000 10000 0 0 228 32 8 4096 210 0 0 22 65536 0 0 65536 0 0
67 8 80000 10000 0 0 256 34 9 4096 466 0 0 29 65536 0 0 65536 0 0
68 9 90000 10000 0 0 256 36 10 4096 722 0 0 37 65536 0 0 65536 0 0
69 10 100000 10000 0 0 256 36 11 4096 978 0 0 45 44 65536 0 0 65536 0 0
70 11 110000 10000 0 0 256 36 11 4096 1234 0 0 52 65536 0 0 65536 0 0
71 12 120000 10000 0 0 256 36 12 4096 1490 0 0 60 59 65536 0 0 65536 0 0
72 13 130000 10000 0 0 256 37 12 4096 1746 0 0 67 65536 0 0 65536 0 0
73 14 140000 10000 0 0 230 39 12 4096 1949 0 0 74 65536 0 0 65536 0 0
74 15 150000 10000 0 0 256 39 13 4096 2204 0 0 81 82 65536 0 0 65536 0 0
75 16 160000 10000 0 0 256 39 14 4096 2459 0 0 89 65536 0 0 65536 0 0
76 17 170000 10000 0 0 256 39 15 4096 2713 0 0 96 65536 0 0 65536 0 0
77 18 180000 10000 0 0 256 39 15 4096 2969 0 0 103 104 65536 0 0 65536 0 0
78 19 190000 10000 0 0 256 39 16 4096 3224 0 0 113 114 65536 0 1 65536 0 0
79 20 200000 10000 0 0 256 41 17 4096 3480 0 0 120 121 65536 0 1 65536 0 0
80 21 210000 10000 0 0 256 41 17 4096 3736 0 0 128 129 65536 0 1 65536 0 0
81 22 220000 10000 0 0 256 41 18 4096 3992 0 0 135 136 65536 0 1 65536 0 0
82 23 230000 10000 0 0 256 41 19 4096 4096 0 0 143 144 65536 0 1 65536 0 0
83 24 240000 10000 0 0 256 41 20 4096 4096 0 0 151 152 65536 0 1 65536 0 0
84 25 250000 10000 0 0 256 43 20 2048 2048 0 0 158 160 65536 0 1 65536 0 0
85 26 260000 10000 0 0 256 45 21 2048 2048 0 0 166 167 65536 0 1 65536 0 0
86 27 270000 10000 0 0 256 45 22 1024 1024 0 0 173 174 65536 0 1 65536 0 0
87 28 280000 10000 0 0 256 45 23 1024 1024 0 0 180 182 65536 0 1 65536 0 0
88 29 290000 10000 0 0 256 45 24 512 512 0 0 188 189 65536 0 1 65536 0 0
89 30 300000 10000 0 0 256 45 24 512 512 0 0 195 197 65536 0 1 65536 0 0
90 31 310000 10000 0 0 256 45 25 256 256 0 0 203 204 65536 0 1 65536 0 0
91 32 320000 10000 0 0 255 45 26 256 256 0 0 210 212 65536 0 1 65536 0 0
92 33 330000 10000 0 0 256 45 27 256 256 0 0 219 221 65536 0 1 65536 0 0
93 34 340000 10000 0 0 256 45 27 256 256 0 0 227 228 65536 0 1 65536 0 0
94 35 350000 10000 0 0 256 45 28 256 256 0 0 235 236 65536 0 1 65536 0 0
95 36 360000 10000 0 0 256 45 29 256 256 0 0 242 243 65536 0 1 65536 0 0