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feat(v4.0.0): POST passes and is part of the boot; U* and U/MOD

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The boot is now nucleus, forth79.4th, POST, prompt, on both products.

- forth79.4th: U* and U/MOD, the capsule's first colon definitions.  They
  are in the FORTH-79 Required Word Set and neither v3 nor v4 had them.
- post79.4th: 550 cases, 126 of the 130 required words.  443 are v3's with
  v3's result.  The rest follow three rulings (2026-10-05): address-
  dependent cases are checked for count, not value; where v3 departs from
  FORTH-79 the standard's result is expected; words v3 has no case for get
  cases written by hand.  v4/tools/post79_rules.py holds each exception
  with its reason and docs/v4.0.0/POST79.md lists them all.
- every case starts from an empty stack, DECIMAL and FORTH DEFINITIONS
- the boot requires POST's tally line with fail=0

Verified: tests=550 pass=550 fail=0 and identical PARITY lines on hosted
amd64, aarch64 and riscv64 (make -C v4 hosted-check) and on bare metal,
clean qemu with STARFORTH_V4=1, on the same three (logs/20261005-1619xx,
-1621xx, -1625xx).  A U/MOD broken on purpose fails five cases and stops
the boot.  make -C v4 test passes.

Not shown: all words but those two are still assembled, so POST has so far
tested the assembled words.  Nothing was typed at a bare-metal prompt.
Open: PAD 42 OVER ! faults on v4 (D-1).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
rajames
2026-10-05 16:28:01 -04:00
co-authored by Claude Opus 5.5
parent 5d6043e37e
commit 2930349bbf
13 changed files with 1331 additions and 416 deletions
Download Patch File Download Diff File Expand all files Collapse all files
v4/system/boot.c
+12 -8
View File
@@ -11,11 +11,11 @@
#include "starkernel/capsule_blocks.h"
/* The capsules, in the order they are loaded. */
/* POST is not yet part of the boot: v4:post79.4th does not pass yet
* (v4/README.md). Build with -DV4_POST_AT_BOOT=1 to load it and to require
* its clean tally; `make -C v4 post` does. */
/* POST is part of the boot: v4:post79.4th is loaded after the vocabulary it
* tests and must end with a clean tally. -DV4_POST_AT_BOOT=0 leaves it
* out, for work on a vocabulary that does not pass yet. */
#ifndef V4_POST_AT_BOOT
#define V4_POST_AT_BOOT 0
#define V4_POST_AT_BOOT 1
#endif
static const char *const boot_capsules[] = {
"v4:forth79.4th",
@@ -136,14 +136,18 @@ static int text_at(const char *line, unsigned len, unsigned at, const char *want
static void post_watch(char c)
{
static const char clean[] = " fail=0";
unsigned i;
if (c != '\n') {
if (post_len < sizeof post_line) post_line[post_len++] = c;
return;
}
if (text_at(post_line, post_len, 0, "PARITY:V4_POST ")) {
post_seen = 1;
post_clean = post_len >= sizeof clean - 1 && text_at(post_line, post_len, post_len - (unsigned)(sizeof clean - 1), clean);
}
/* the node's prompt comes before it on the line, so look along the line */
for (i = 0; i < post_len; i++)
if (text_at(post_line, post_len, i, "PARITY:V4_POST ")) {
post_seen = 1;
post_clean = post_len >= sizeof clean - 1 && text_at(post_line, post_len, post_len - (unsigned)(sizeof clean - 1), clean);
break;
}
post_len = 0;
}