From: "Ulrich Weigand" <uweigand@de.ibm.com>
To: ppluzhnikov@google.com (Paul Pluzhnikov)
Cc: gdb-patches@sourceware.org
Subject: Re: [RFA] Patch for PR gdb/2477
Date: Tue, 15 Jul 2008 18:52:00 -0000 [thread overview]
Message-ID: <200807151852.m6FIqECB022335@d12av02.megacenter.de.ibm.com> (raw)
In-Reply-To: <8ac60eac0807141111r58b047a3j7fd4a39080b1be19@mail.gmail.com> from "Paul Pluzhnikov" at Jul 14, 2008 11:11:59 AM
Paul Pluzhnikov wrote:
> I've also added a "non-zero but invalid" pointer test at ~0UL.
> Is there a "canonical" invalid address I should be testing instead?
This test fails on spu-elf:
+ gamma.c1 = 0; gamma.c2 = (A *) ~0UL;
+gdb_test "p acp->c2" "\\(A \\*\\) 0xf+"
because our pointer-to-address conversion mimics the wrap-around
behaviour of the SPU hardware's local store access: all addresses
will wrap around modulo 256 KB.
The c2 pointer will therefore show up as 0x3ffff:
p acp->c2^M
$10 = (A *) 0x3ffff^M
(gdb) FAIL: gdb.cp/class2.exp: p acp->c2
Any suggestions how to fix this?
Bye,
Ulrich
--
Dr. Ulrich Weigand
GNU Toolchain for Linux on System z and Cell BE
Ulrich.Weigand@de.ibm.com
next prev parent reply other threads:[~2008-07-15 18:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-14 17:32 Paul Pluzhnikov
2008-07-14 17:43 ` Daniel Jacobowitz
2008-07-14 18:12 ` Paul Pluzhnikov
2008-07-14 18:21 ` Daniel Jacobowitz
2008-07-14 18:30 ` Paul Pluzhnikov
2008-07-15 18:52 ` Ulrich Weigand [this message]
2008-07-15 19:03 ` Daniel Jacobowitz
2008-07-15 19:16 ` Paul Pluzhnikov
2008-07-15 20:04 ` Ulrich Weigand
2008-07-15 19:04 ` Paul Pluzhnikov
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