CVS: cvs.openbsd.org: src

[Todd Mortimer]

CVSROOT:        /cvs
Module name:    src
Changes by:     morti...@cvs.openbsd.org        2023/01/10 18:55:18

Modified files:
        lib/libc/arch/amd64: SYS.h 
        lib/libc/arch/amd64/sys: Ovfork.S brk.S sbrk.S sigpending.S 
                                 sigprocmask.S sigsuspend.S 
                                 tfork_thread.S 
        libexec/ld.so/amd64: SYS.h 

Log message:
Add retguard to amd64 syscalls.

Since we got rid of padded syscalls we have enough registers to do this.

ok deraadt@ ok kettenis@