From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 11 Oct 2020 23:18:15 +0000 (+0100)
Subject: base/regdump-arm64.S, base/regdump.h: Save NZCV and x8--x15 early.
X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/commitdiff_plain/818bad9b1b5e68bdd26595a0ec5f513fe56ba174?hp=818bad9b1b5e68bdd26595a0ec5f513fe56ba174

base/regdump-arm64.S, base/regdump.h: Save NZCV and x8--x15 early.

Alas, the processor flags /and/ at least x14 and x15 are clobbered by
the PLT on-demand linkage machinery, so we must save them in the macro
before calling out to the library.  To be safe, preserve all of the
non-argument call-clobbered registers.
---