InstallNetProbe: card.resource stubs list every scratch register the call may destroy (#70, C of 3) - #73
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…call may destroy installnetprobe.c's three card.resource stubs (OwnCard, ReleaseCard, CopyTuple) passed their argument registers as asm inputs only. The library ABI lets every LVO destroy d0/d1/a0/a1. This was REAL at main 66e0bf5. probe_own_card loads a1 = &handle (0x968) for OwnCard (jsr -6 at 0x96e). On the owned path, the first CopyTuple(0x20) (jsr -72 at 0x98e) was issued without reloading a1, so it used whatever OwnCard left there. After the change, 0x986 is `lea 0x18,a1` before the CopyTuple, which reloads the handle. The other two stubs were latent. Each argument register is now a "+r" operand; unused scratch registers remain clobbers. The #70 scanner no longer flags installnetprobe.c. With #71 and #72 this closes the 16 shipped sites in #70. Part of #70 (shipped sites, PR C of 3). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Part of #70, shipped-site fixes, PR C of 3:
src/tools/installnetprobe.c→ InstallNetProbe. Independent of #71 (merged) and #72.The three card.resource stubs (OwnCard -6, ReleaseCard -12, CopyTuple -72) passed their argument registers as asm inputs only.
REAL today (main 66e0bf5), owned-card path:
After:
Change: each argument register becomes a
"+r"operand, with a comment at the stubs and a one-line CHANGELOG entry.Proof:
tools/ci.sh hostin CI conditions: rc 0, 464/464.With #71 and #72 this closes all 16 shipped sites in #70.
🤖 Generated with Claude Code