From: Kevin Buettner <kevinb@redhat.com>
To: gdb@sources.redhat.com
Subject: LSI 33k ?
Date: Tue, 06 May 2003 12:34:00 -0000 [thread overview]
Message-ID: <1030506123427.ZM24517@localhost.localdomain> (raw)
Does anyone know anything about the LSI 33k? Okay, more specifically, did
support for this core ever actually work in GDB?
In mips-tdep.c, I see the following:
/* Names of LSI 33k registers. */
char *mips_lsi33k_reg_names[] = {
"epc", "hi", "lo", "sr", "cause","badvaddr",
"dcic", "bpc", "bda", "", "", "", "", "",
"", "", "", "", "", "", "", "",
...
With the exception of IRIX, the first line for all of the other regname
sets look like this:
"sr", "lo", "hi", "bad", "cause","pc",
I'm not concerned about IRIX, because BADVADDR_REGNUM, CAUSE_REGNUM,
PC_REGNUM, etc. are redefined in the appropriate tm-*.h file.
The LSI 33k rearranges these registers, apparently even the PC_REGNUM
value, but nowhere do I see a PC_REGNUM definition that's specific to
the LSI 33k. This is bad because if the LSI 33k registers are really
laid out as indicated by lsi33_reg_names[], then there's no way that
GDB is actually obtaining the correct PC value whenever it uses PC_REGNUM.
(It'll be using the "baddvaddr" value...)
I thought for a while that perhaps the LSI 33k was simply bit-rotted,
but after doing some digging in the old Cygnus CVS repository, I don't
see how it could have ever worked.
Does anyone know?
Kevin
next reply other threads:[~2003-05-06 12:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-06 12:34 Kevin Buettner [this message]
2003-05-06 18:27 ` Stan Shebs
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