10dc260f0c
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>
26 lines
901 B
Markdown
26 lines
901 B
Markdown
# Form `DS` — DS — Doubleword Shift (word-scaled displacement)
|
||
|
||
## Bit Layout
|
||
|
||
| Bits | Field | Meaning |
|
||
| --- | --- | --- |
|
||
| 0–5 | `OPCD` | primary opcode |
|
||
| 6–10 | `RT` | destination GPR (or RS) |
|
||
| 11–15 | `RA` | source GPR (0 ⇒ literal 0) |
|
||
| 16–29 | `DS` | 14-bit signed word-scaled displacement |
|
||
| 30–31 | `XO` | extended opcode |
|
||
|
||
## Instructions Using This Form
|
||
|
||
<!-- GENERATED: BEGIN -->
|
||
|
||
| Mnemonic | Opcode | Group | Description |
|
||
| --- | --- | --- | --- |
|
||
| [`ld`](../memory/ld.md) | `0xe8000000` | memory | Load Doubleword |
|
||
| [`ldu`](../memory/ld.md) | `0xe8000001` | memory | Load Doubleword with Update |
|
||
| [`lwa`](../memory/lwa.md) | `0xe8000002` | memory | Load Word Algebraic |
|
||
| [`std`](../memory/std.md) | `0xf8000000` | memory | Store Doubleword |
|
||
| [`stdu`](../memory/std.md) | `0xf8000001` | memory | Store Doubleword with Update |
|
||
|
||
<!-- GENERATED: END -->
|