Files
Sylpheed/tools/ppc-manual/categories/fpu.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

2.7 KiB

Floating-Point

IEEE-754 add/sub/mul/div/sqrt, fused multiply-add, conversions, compares, FPSCR moves.

33 families · 33 XML entries.

Family Form Description Members
fabsx X Floating Absolute Value fabsx
faddsx A Floating Add Single faddsx
faddx A Floating Add faddx
fcfidx X Floating Convert From Integer Doubleword fcfidx
fcmpo X Floating Compare Ordered fcmpo
fcmpu X Floating Compare Unordered fcmpu
fctidx X Floating Convert to Integer Doubleword fctidx
fctidzx X Floating Convert to Integer Doubleword with Round Toward Zero fctidzx
fctiwx X Floating Convert to Integer Word fctiwx
fctiwzx X Floating Convert to Integer Word with Round Toward Zero fctiwzx
fdivsx A Floating Divide Single fdivsx
fdivx A Floating Divide fdivx
fmaddsx A Floating Multiply-Add Single fmaddsx
fmaddx A Floating Multiply-Add fmaddx
fmrx X Floating Move Register fmrx
fmsubsx A Floating Multiply-Subtract Single fmsubsx
fmsubx A Floating Multiply-Subtract fmsubx
fmulsx A Floating Multiply Single fmulsx
fmulx A Floating Multiply fmulx
fnabsx X Floating Negative Absolute Value fnabsx
fnegx X Floating Negate fnegx
fnmaddsx A Floating Negative Multiply-Add Single fnmaddsx
fnmaddx A Floating Negative Multiply-Add fnmaddx
fnmsubsx A Floating Negative Multiply-Subtract Single fnmsubsx
fnmsubx A Floating Negative Multiply-Subtract fnmsubx
fresx A Floating Reciprocal Estimate Single fresx
frspx X Floating Round to Single frspx
frsqrtex A Floating Reciprocal Square Root Estimate frsqrtex
fselx A Floating Select fselx
fsqrtsx A Floating Square Root Single fsqrtsx
fsqrtx A Floating Square Root fsqrtx
fsubsx A Floating Subtract Single fsubsx
fsubx A Floating Subtract fsubx