In ups/ao_elfcore.c, replace get_note_info with the following. This
is required to debug Solaris 2.5 cores under 2.6:
--------------------------------------------------------------------------------
#ifdef AO_USE_PROCFS
static bool
get_note_info(alloc_pool_t *ap, const char *path, int fd,
	      Elf32_Phdr *note_ph,
	      int *p_signo, char **p_cmdname, const char **p_cmdline,
	      prgreg_t **p_regs, prfpregset_t **p_p_fpregs)
#else
static bool
get_note_info(alloc_pool_t *ap, const char *path, int fd,
	      Elf32_Phdr *note_ph,
	      int *p_signo, char **p_cmdname, const char **p_cmdline)
#endif
{
	/*  These values come from the the Solaris 2 core(4) man page.
	    RGA for Solaris 2.6, NT_PSINFO = 13 in elf.h, so prepend UPS_.
	    The file now has :
	    NT_PRSTATUS     1 
	    NT_PRFPREG      2
	    NT_PRPSINFO     3
	 */
	enum {
		UPS_NT_STATUS = 1,
		UPS_NT_FPREGSET = 2,
		UPS_NT_PSINFO = 3,
		UPS_NT_TASKSTRUCT = 4, /* RGA added */
		UPS_NT_PLATFORM = 5,   /* RCB added */
		UPS_NT_AUXVEC = 6,     /* RCB added */
		UPS_NT_GWINDOWS = 7,   /* RGA added */
		UPS_NT_PSTATUS = 10,   /* RGA added */
		UPS_NT_PSINFO2 = 13,   /* RGA added */
		UPS_NT_PRCRED = 14,    /* RGA added */
		UPS_NT_UTSNAME = 15,   /* RGA added */
		UPS_NT_LWPSTATUS = 16, /* RGA added */
		UPS_NT_LWPSINFO = 17   /* RGA added */
	};
	static const char what[] = "ELF core file";
	char *buf, *cmdname;
	const char *cmdline;
	int signo;
	size_t pos;
#ifdef AO_USE_PROCFS
	prfpregset_t *fpregs;
	prgreg_t *regs;
#endif
		
	if (note_ph == NULL) {
		errf("No PT_NOTE section in ELF core file %s", path);
		return FALSE;
	}

	buf = e_malloc(note_ph->p_filesz);
	if (!read_chunk(path, "Elf executable", fd, "note section",
			(off_t)note_ph->p_offset, buf, note_ph->p_filesz)) {
		return FALSE;
	}

#ifdef AO_USE_PROCFS
	regs = NULL;
	fpregs = NULL;
#endif
	cmdname = NULL;
	cmdline = NULL;
	
	pos = 0;
	while (pos < note_ph->p_filesz) {
		int *ip;
		const char *name, *desc;
		int namesz, descsz, type;

		ip = (int *)&buf[pos];
		namesz = ip[0];
		descsz = ip[1];
		type = ip[2];
		name = (char *)&ip[3];
		desc = name + ((namesz + 3) / 4) * 4;

		switch (type) {
#ifdef AO_USE_PROCFS
		case UPS_NT_STATUS:
		case UPS_NT_PSTATUS:
			get_prstatus_info(ap, (prstatus_t *)desc,
					  &signo, &regs);
			break;
		case UPS_NT_FPREGSET:
			fpregs = e_malloc(sizeof(prfpregset_t));
			memcpy(fpregs, desc, sizeof(prfpregset_t));
			break;
#endif
		case UPS_NT_PSINFO:
		case UPS_NT_PSINFO2:
		get_psinfo_info(ap, (prpsinfo_t *)desc,
					&cmdname, &cmdline);
			break;
		case UPS_NT_GWINDOWS:
		case UPS_NT_TASKSTRUCT:
		case UPS_NT_PLATFORM:
		case UPS_NT_AUXVEC:
		case UPS_NT_PRCRED:
		case UPS_NT_UTSNAME:
		case UPS_NT_LWPSTATUS:
		case UPS_NT_LWPSINFO:
			break;
		default:
			errf("Unknown PT_NOTE type %d in ELF core file %s "
			     "- ignored", type, path);
			break;
		}
		
		pos = (desc - buf) + ((descsz + 3) / 4) * 4;
	}

	free(buf);
	
	if (cmdname == NULL) {
		errf("No prpsinfo_t item in note section of %s %s", what, path);
		return FALSE;
	}

#ifdef AO_USE_PROCFS
	if (regs == NULL) {
		errf("No prstatus_t item in note section of %s %s", what, path);
		free(cmdname);
		return FALSE;
	}
#endif

	*p_cmdname = cmdname;
#ifdef AO_USE_PROCFS
	*p_regs = regs;
	*p_p_fpregs = fpregs;
#endif
	*p_signo = signo;
	*p_cmdline = cmdline;
	return TRUE;
}