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Add a /S mode to DDB "ex" command, which interprets and prints the

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value at the requested address as a symbol.  For example, "ex /S
aio_swake" prints the name of the function currently registered in
via aio_swake hook.

The change as committed differs slightly from the patch in the PR,
as I force the size of the retrieved value (and the automatic
address increment) to be sizeof(void *).  This seems to provide
the most useful auto-increment behavior, and defaults using the
default size (4), which is not sizeof(void *) on 64-bit platforms.

MFC after:	3 days
PR:		57976
Submitted by:	Dan Strick <strick at covad.net>
This commit is contained in:
Robert Watson 2008-03-07 18:09:07 +00:00
parent 226bb60e94
commit 7c7b7f8e1b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=176914
1 changed files with 6 additions and 0 deletions
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6
sys/ddb/db_examine.c
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@ -166,6 +166,12 @@ db_examine(addr, fmt, count)
db_printf("\\%03o", (int)value); db_printf("\\%03o", (int)value);
} }
break; break;
case 'S': /* symbol */
value = db_get_value(addr, sizeof(void *),
FALSE);
addr += sizeof(void *);
db_printsym(value, DB_STGY_ANY);
break;
case 'i': /* instruction */ case 'i': /* instruction */
addr = db_disasm(addr, FALSE); addr = db_disasm(addr, FALSE);
break; break;