CVS commit: src/sys/arch/amd64/include

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Thu Feb  7 00:19:54 UTC 2019

Modified Files:
        src/sys/arch/amd64/include: ptrace.h

Log Message:
Define PTRACE_ILLEGAL_ASM for NetBSD/amd64 in ptrace.h

Use ud2 instruction that is guaranteed to raise an invalid instruction
exception (through SIGILL).

On NetBSD and FreeBSD this instruction raises ILL_PRVOPC, on Linux
ILL_ILLOPN. It's not clear which opion is better "Privileged opcode" vs
"Illegal operand", because ud2 doesn't seem to be a privileged operation
and it doesn't take any operand.

Assume in future changes that this opcode will raise ILL_PRVOPC and keep
it purely for testing purposes of the SIGILL crash type.


To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/amd64/include/ptrace.h

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