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Fix dump of the unread portion of the kernel message buffer.

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PR: bin/87964
Submitted by: Frank Mayhar	frank at exit dot com
This commit is contained in:
Marcel Moolenaar 2005-10-26 02:22:28 +00:00
parent f3b996b6b8
commit 6631d1e9cd
1 changed files with 4 additions and 0 deletions
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4
gnu/usr.bin/gdb/kgdb/main.c
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@ -197,6 +197,8 @@ kgdb_parse(const char *exp)
return (n);
}
#define MSGBUF_SEQ_TO_POS(size, seq) ((seq) % (size))
static void
kgdb_init_target(void)
{
@ -241,6 +243,8 @@ kgdb_init_target(void)
size = (int)kgdb_parse("msgbufp->msg_size");
rseq = (int)kgdb_parse("msgbufp->msg_rseq");
wseq = (int)kgdb_parse("msgbufp->msg_wseq");
rseq = MSGBUF_SEQ_TO_POS(size, rseq);
wseq = MSGBUF_SEQ_TO_POS(size, wseq);
if (bufp == 0 || size == 0 || rseq == wseq)
return;