Josip Parlov fab7d203fb feat(relinker): --frame-red-zone gives red-zone leaf functions a frame on Windows ...

Windows writes an exception frame directly below RSP, so a fault resumed on
a guest thread overwrites values a System V leaf function keeps in its red
zone. With --frame-red-zone, a leaf function with a
push rbp; mov rbp, rsp; push ... prologue that reads or writes below its
pushes gets two kinds of trampoline: the prologue lowers RSP by 128 bytes
after its pushes, and each pop ...; pop rbp; ret exit raises it back first.

Sites a branch enters, sites shorter than a jump and sites over a --to-intel
stub are skipped; the conversion reports the framed and skipped counts.

2026-10-13 18:46:08 +02:00

..

codegen

feat(relinker): --frame-red-zone gives red-zone leaf functions a frame on Windows

2026-10-13 18:46:08 +02:00