> Do we want this? I don't know what else people use to look at,
> say, network packets in memory:
I like this and the diff is OK by me.
>
> ddb{3}> show mbuf $rax
> mbuf 0xffffff00dfa9d200
> m_type: 1 m_flags: 2<M_PKTHDR>
> m_next: 0xffffff00dfa9df00 m_nextpkt: 0x0
> m_data: 0xffffff00dfa9d2b0 m_len: 64
> m_dat: 0xffffff00dfa9d220 m_pktdat: 0xffffff00dfa9d268
> m_ptkhdr.ph_ifidx: 0 m_pkthdr.len: 136
> m_ptkhdr.ph_tags: 0x0 m_pkthdr.ph_tagsset: 0
> m_pkthdr.ph_flowid: 0 m_pkthdr.ph_loopcnt: 0
> m_pkthdr.csum_flags: 0
> m_pkthdr.ether_vtag: 0 m_ptkhdr.ph_rtableid: 0
> m_pkthdr.pf.statekey: 0x0 m_pkthdr.pf.inp 0x0
> m_pkthdr.pf.qid: 0 m_pkthdr.pf.tag: 0
> m_pkthdr.pf.flags: 80<PROCESSED>
> m_pkthdr.pf.routed: 0 m_pkthdr.pf.prio: 3
> ddb{3}> x /bm 0xffffff00dfa9d2b0,0t64
> 0xffffff00dfa9d2b0: 60000000 00482940 200106f8 124a0000 `....H)@ ....J..
> 0xffffff00dfa9d2c0: 00000000 00000002 200106f8 124a0000 ........ ....J..
> 0xffffff00dfa9d2d0: 00000000 00000004 60000000 00203a40 ........`.... :@
> 0xffffff00dfa9d2e0: 200106f8 124a0000 00000000 00000002 ....J..........
> ddb{3}>
>
> Index: db_examine.c
> ===================================================================
> RCS file: /cvs/src/sys/ddb/db_examine.c,v
> retrieving revision 1.22
> diff -u -p -r1.22 db_examine.c
> --- db_examine.c 7 Jun 2016 01:31:54 -0000 1.22
> +++ db_examine.c 10 Oct 2016 17:39:17 -0000
> @@ -72,10 +72,11 @@ db_examine_cmd(db_expr_t addr, int have_
> void
> db_examine(db_addr_t addr, char *fmt, int count)
> {
> - int c;
> + int i, c;
> db_expr_t value;
> int size;
> int width;
> + int bytes;
> char * fp;
> db_addr_t incr;
> int dis;
> @@ -130,6 +131,42 @@ db_examine(db_addr_t addr, char *fmt, in
> case 'x': /* unsigned hex */
> value = db_get_value(addr, size, FALSE);
> db_printf("%-*lx", width, (long)value);
> + break;
> + case 'm': /* hex dump */
> + /*
> + * Print off in chunks of size. Try to print 16
> + * bytes at a time into 4 columns. This
> + * loops modify's count extra times in order
> + * to get the nicely formatted lines.
> + */
> + incr = 0;
> + bytes = 0;
> + do {
> + for (i = 0; i < size; i++) {
> + value =
> + db_get_value(addr+bytes, 1,
> + FALSE);
> + db_printf("%02lx",
> + (long)value);
> + bytes++;
> + if (!(bytes % 4))
> + db_printf(" ");
> + }
> + } while ((bytes != 16) && count--);
> + /* True up the columns before continuing */
> + db_printf("%-*s",
> + (16-bytes)*2 + (4 - bytes/4) + 1, " ");
> + /* Print chars, use . for non-printables */
> + while (bytes--) {
> + value = db_get_value(addr + incr, 1,
> + FALSE);
> + incr++;
> + if (value >= ' ' && value <= '~')
> + db_printf("%c", (int)value);
> + else
> + db_printf(".");
> + }
> + db_printf("\n");
> break;
> case 'z': /* signed hex */
> value = db_get_value(addr, size, TRUE);
> --
> Christian "naddy" Weisgerber [email protected]
