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andps
2019 Apr 26
10
Automatically backing up and restoring x18 around function calls on AArch64?
Hi,
When using Wine to run Windows ARM64 executables on Linux, there's one
major ABI incompatibility between the two; Windows treats the x18
register as the reserved platform register, while it is free to be
clobbered anywhere in code on Linux.
The Wine code sets up this register before passing control over to the
Windows executable code, but whenever the Windows code calls a function