Files
Sylpheed/tools/ppc-manual/forms/XFX.md
MechaCat02 10dc260f0c chore(tools): adopt the PPC manual and a canary launcher that works anywhere
CONSOLIDATION.md Phase 6. Both lived untracked in the project root -- on one
disk, backed up by nothing.

  tools/ppc-manual/   393 files, 3.7 MB. 455 instructions, 350 family pages,
                      598 mnemonics resolvable through index.json, plus the
                      generator that produced them.
  tools/run-canary.sh the oracle launcher.

🔴 THE LAUNCHER WAS BROKEN IN TWO WAYS AND IS REWRITTEN, not copied:

  * it pointed at `xenia-rs/sylpheed.iso`, a SYMLINK. Wine cannot resolve one
    and says "path invalid", which reads as a corrupt image rather than a path
    problem -- it has cost a session before. It now points at the real file and
    warns if handed a symlink.
  * it hardcoded one machine's absolute paths, and named `xenia-rs`, which this
    consolidation retires. Now derived from the script's own location, with
    SYLPH_CANARY_BIN / SYLPH_ISO overrides and a check that each exists.

The standing constraints are in its header where someone will read them: one
emulator at a time, Canary runs MUTED, and never judge a crash or a hang from
a Bash-launched run -- a SIGKILL that looked like the binary was the editor's
process supervisor.

⚠️ The manual's GENERATOR reads the xenia-rs source tree, which is going away.
Its decoder now lives here as crates/sylpheed-ppc, so the generator must be
repointed before it is run again. Recorded in the README rather than left for
someone to discover; the manual's content is checked in and regenerates from
nothing implicitly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-13 21:18:00 +02:00

877 B
Raw Blame History

Form XFX — XFX — Fixed (SPR/TBR/CR-field access)

Bit Layout

Bits Field Meaning
0–5 OPCD primary opcode (31)
6–10 RT destination / source GPR
11–20 spr/tbr/FXM SPR/TBR number (byte-swapped halves) or CR field mask
21–30 XO extended opcode
31 — reserved

Instructions Using This Form

Mnemonic Opcode Group Description
mtcrf 0x7c000120 control Move to Condition Register Fields
mfspr 0x7c0002a6 control Move from Special-Purpose Register
mftb 0x7c0002e6 control Move from Time Base
mtspr 0x7c0003a6 control Move to Special-Purpose Register