Developer decision: inline assembly is accepted for coprocessor and kernel
instructions, documented per file. The boundary already applied: the stack
accessor (register int sp __asm__("$29"), a register-name binding rather than an
instruction) was treated as pure C and merged earlier; these 7 regions each carry
one __asm__ volatile statement in the re-derived SDK-macro form, with the integer
logic in C and the epilogue and scheduling produced by cc1 and maspsx. No .word
lumps and no whole-function assembly.
7 regions: 0x80103A94 (cfc2), 0x80103B60 (ctc2), 0x800F3E70 (mtc2/mfc2),
0x80109778 (two ctc2), 0x8001AE3C (three ctc2), 0x80103FCC and 0x80103FEC (BIOS
stubs, whose 16-byte extents come from the syscall-terminator fix).
include/gtemac.h is tracked as the provenance record for the re-derived
encodings and the control-register map. It is worker C's own derivation from the
observed bytes, with no SDK text; the staged sources are self-contained and do
not depend on it yet.
Candidate gate: c_regions=144, 0 differing bytes, SHA-1 e173426c. Promoted, then
make check green. Distinct matched bodies: 135.
Christopher Williams
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