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Sylpheed/tools/ppc-manual/forms/XFX.md
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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
05 OPCD primary opcode (31)
610 RT destination / source GPR
1120 spr/tbr/FXM SPR/TBR number (byte-swapped halves) or CR field mask
2130 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