CVS commit: src/sys/compat/netbsd32

["Paul Goyette" <pgoyette%netbsd.org@localhost>]

Module Name:    src
Committed By:   pgoyette
Date:           Mon Mar  9 01:06:34 UTC 2020

Modified Files:
        src/sys/compat/netbsd32: netbsd32_mod.c

Log Message:
If a syscall requires a module to be autoloaded, the initial invocation
of that syscall will return ERESTART.  For amd64's netbsd32_syscall()
that means we need to back up the PC saved in the trap frame so we can
re-issue the syscall instruction.  For "normal" syscall traps, we saved
the instruction length in the trap frame, but this was missing for the
oosyscall/lcall path.  Since the PC was not backed up, the kernel-only
value ERESTART was returned to userland, causing all sort of grief for
old compat_netbsd32 executables!

XXX Pullup-9


To generate a diff of this commit:
cvs rdiff -u -r1.18 -r1.19 src/sys/compat/netbsd32/netbsd32_mod.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.