CVS commit: src/sys

[Michał Górny <mgorny%netbsd.org@localhost>]

Module Name:    src
Committed By:   mgorny
Date:           Wed Jan  8 17:21:38 UTC 2020

Modified Files:
        src/sys/arch/amd64/include: ptrace.h
        src/sys/arch/i386/include: ptrace.h
        src/sys/kern: core_elf32.c

Log Message:
Include XSTATE note in x86 core dumps

Introduce a simple COREDUMP_MACHDEP_LWP_NOTES logic to provide machdep
API for injecting per-LWP notes into coredumps, and use it to append
PT_GETXSTATE note.

Since the XSTATE block uses the same format on i386 and amd64, the code
does not have to conditionalize between 32-bit and 64-bit ELF format
on that.  However, it does need to distinguish between 32-bit and 64-bit
PT_* values.  In order to do that, it reuses PT32_* constant already
present for ptrace(), and adds a matching PT64_GETXSTATE to satisfy
the cpp logic.


To generate a diff of this commit:
cvs rdiff -u -r1.20 -r1.21 src/sys/arch/amd64/include/ptrace.h
cvs rdiff -u -r1.23 -r1.24 src/sys/arch/i386/include/ptrace.h
cvs rdiff -u -r1.61 -r1.62 src/sys/kern/core_elf32.c

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