Note entry types (core dumps)

["Kamil Rytarowski" <n54%gmx.com@localhost>]

Hello,

What's the status of the note entry types in core dumps in NetBSD?

They are extra notes saved during the memory dumping in additional section.
mostly dumping content of structures.

Just to list their types:
#define	NT_PRSTATUS	1	/* prstatus_t	<sys/old_procfs.h>	*/
#define	NT_PRFPREG	2	/* prfpregset_t	<sys/old_procfs.h>	*/
#define	NT_PRPSINFO	3	/* prpsinfo_t	<sys/old_procfs.h>	*/
#define	NT_PRXREG	4	/* prxregset_t	<sys/procfs.h>		*/
#define	NT_PLATFORM	5	/* string from sysinfo(SI_PLATFORM)	*/
#define	NT_AUXV		6	/* auxv_t array	<sys/auxv.h>		*/
#define	NT_GWINDOWS	7	/* gwindows_t	SPARC only		*/
#define	NT_ASRS		8	/* asrset_t	SPARC V9 only		*/
#define	NT_LDT		9	/* ssd array	<sys/sysi86.h> IA32 only */
#define	NT_PSTATUS	10	/* pstatus_t	<sys/procfs.h>		*/
#define	NT_PSINFO	13	/* psinfo_t	<sys/procfs.h>		*/
#define	NT_PRCRED	14	/* prcred_t	<sys/procfs.h>		*/
#define	NT_UTSNAME	15	/* struct utsname <sys/utsname.h>	*/
#define	NT_LWPSTATUS	16	/* lwpstatus_t	<sys/procfs.h>		*/
#define	NT_LWPSINFO	17	/* lwpsinfo_t	<sys/procfs.h>		*/
#define	NT_PRPRIV	18	/* prpriv_t	<sys/procfs.h>		*/
#define	NT_PRPRIVINFO	19	/* priv_impl_info_t <sys/priv.h>	*/
#define	NT_CONTENT	20	/* core_content_t <sys/corectl.h>	*/
#define	NT_ZONENAME	21	/* string from getzonenamebyid(3C)	*/
#define	NT_NUM		21

http://www.opensource.apple.com/source/dtrace/dtrace-90/sys/elf.h

From what I can see these numbers are standardized across systems (Linux, FreeBSD).

They are used widely e.g.: gdb, gcore (FreeBSD), file(1), lldb, binutils.

I need libunwind (a dependency of quite few runtimes) for NetBSD and I just landed here.

At least partial implementation doesn't look too heavy.

PS. libexecinfo vs libunwind debates are irrelevant here.