Implement vdso - virtual dynamic shared object. Through vdso Linux exposes functions from kernel with proper DWARF CFI information so that it becomes easier to unwind through them. Using vdso is a mandatory for a thread cancelation && cleanup on a...

[dchagin]

Summary

...modern glibc.

[dchagin]

Merge imp@ ${SYSDIR} changes.

Updating D1060: Implement vdso - virtual dynamic shared object. Through vdso Linux

exposes functions from kernel with proper DWARF CFI information so that
it becomes easier to unwind through them.
Using vdso is a mandatory for a thread cancelation && cleanup
on a...

[trasz]

This looks too low-level (all this asm stuff) for me to review. Konstantin, could you take a look? Thanks!

[kib]

Can you use higher-level cfi pseudo-ops for annotations, instead of manually encoding the dwarf ?