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Mirror the source tree onto the system disk

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A list of files in a makefile goes stale the moment somebody adds a program and forgets to
name it, and what they forgot is invisible until they go looking for it on the machine. So
SplitDisk gained a mirror command and the disk rule is one line: putting a file where the
others live is now the whole of putting it on the disk.

EVERY FILE GOES THROUGH put AND EVERY DIRECTORY THROUGH mkdir. That is the point of it -
mirror adds a walk and no filesystem code at all, so anything the format refuses here it
refuses everywhere, in the same words. What is new is the walk, and the walk is what the
six checks in Tests/disk.sh are about: that it goes all the way down, that it leaves dotfiles
and named directories behind, and that a name too long stops it.

REFUSED RATHER THAN SKIPPED, because a disk quietly missing a file is the exact failure a
mirror exists to prevent. Which meant four sources had to be renamed - a directory entry
holds 22 characters and they were 23, 23, 24 and 29:

  16bitSegmentedSieve.asm        -> 16bitSieve.asm
  16bitSegmentedSieveModern.asm  -> 16bitSieveModern.asm
  consoleInterruptTest.asm       -> consoleInterrupt.asm
  controllerWriteTest.asm        -> controllerWrite.asm

The test names in the manifest are unchanged, since those are identifiers and every recorded
result is filed under them. Only where the source lives has moved.

The entries are sorted before anything is written. readdir hands them back in whatever order
the host filesystem feels like, and a disk image that comes out different from one run to the
next is an image no test could compare against another.

The disk grew from one megabyte to four and from 192 directory entries to 1,024. The sources
are 2,850 blocks and the mirror filled the old directory on its first run, which is a thing
that should not need thinking about again.

The Tests fixture disk is deliberately NOT mirrored. It is a controlled fixture with known
contents, and the shipped disk is the one meant to be useful; they want different things.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E2JrLzFvuFX9fgi1LDRjrW
This commit is contained in:
Anachronaut
2026-08-29 08:45:46 -04:00
co-authored by Claude Opus 5
parent ff4b025058
commit 0852666e73
13 changed files with 247 additions and 37 deletions
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Tests/manifest
+4 -4
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@@ -46,10 +46,10 @@ printHello | Examples/printHello.asm | run | -
32bitFibonacci | Examples/Fibonacci/32bitFibonacci.asm | run | - | -
colours | Examples/colours.asm | run | - | -
8bitSieve | Examples/primeSieve/8bitSieve.asm | run | - | -
16bitSegmentedSieve | Examples/primeSieve/16bitSegmentedSieve.asm | run | - | -
16bitSegmentedSieve | Examples/primeSieve/16bitSieve.asm | run | - | -
# The four pointer rewrite. It emits exactly the same primes as the line above, which
# is the whole point of keeping both: the pair is a direct before and after.
16bitSegmentedSieveModern | Examples/primeSieve/16bitSegmentedSieveModern.asm | run | - | -
16bitSegmentedSieveModern | Examples/primeSieve/16bitSieveModern.asm | run | - | -
mathTest | testPrograms/mathTest.asm | run | - | -
printTest | testPrograms/printTest.asm | run | - | -
int16print | Libraries/int16print.asm | run | - | -
@@ -73,7 +73,7 @@ moveQTest | testPrograms/moveQTest.asm | run | -
# Reading and writing Program Memory, which the instruction set deliberately cannot do,
# and the bank table that says what is reachable.
controllerReadTest | testPrograms/controllerReadTest.asm | run | - | -
controllerWriteTest | testPrograms/controllerWriteTest.asm | run | - | -
controllerWriteTest | testPrograms/controllerWrite.asm | run | - | -
# Block transfers: between banks, within one, overlapping, and one that is refused.
blitTest | testPrograms/blitTest.asm | run | - | -
# Reading a filesystem that the host tool wrote. The two are separate implementations of
@@ -196,7 +196,7 @@ consoleModeTest | testPrograms/consoleModeTest.asm | run | consoleMo
# down the two things that make the feature usable rather than merely present: the end of
# input raises the line once, so an interrupt-driven program is told when to stop, and a
# handler that does not read the byte is not called again, so nothing storms.
consoleInterruptTest | testPrograms/consoleInterruptTest.asm | run | consoleInterruptTest.in | -
consoleInterruptTest | testPrograms/consoleInterrupt.asm | run | consoleInterruptTest.in | -
# Picking a typed line apart, which is how the shell understands anything. Includes a
# string beginning with a zero: the assembler strips the quotes before deciding what a
# token is, so such a string looked like a malformed literal and was refused.