From: Luis Machado <luis.machado@linaro.org>
To: joel@rtems.org, gdb@sourceware.org
Subject: Re: 64-bit Addresses in remote protocol
Date: Mon, 22 Mar 2021 14:32:24 -0300 [thread overview]
Message-ID: <edb40cd5-6cd3-4653-2b77-efd8c4a04957@linaro.org> (raw)
In-Reply-To: <CAF9ehCVeyX72x3FePs0HgToqxizUU5cO_4ggba9FsS0gRPzX+Q@mail.gmail.com>
Hi,
On 3/22/21 1:55 PM, Joel Sherrill wrote:
> Hi
>
> Over at RTEMS, we are looking at some warnings in our debug
> server and wondering if fields described as "addr" in the gdb
> protocol should be treated 64-bits when that target has 64-bit
> addresses like the aarch64.
If the inferior is using 64-bit addresses, then the remote protocol will
also use 64-bit addresses. If we have a 32-bit inferior running on
aarch64 hardware, we'll have 32-bit addresses over the remote protocol
as well.
Even when we're using 64-bit addresses, the remote protocol may not pad
it with zeroes to make it 64-bit, but it should still be handled as 64-bit.
Does that help?
>
> Technically, we are looking at sweeping through our gdb server
> and using uintptr_t for addresses where uint32_t has been
> ok before.
>
> But I wanted to make sure that our assumption that "addr" means
> a valid target address which means it can be 32- or 64- bits based
> on the target.
>
> Thanks.
>
> --joel
> RTEMS
>
next prev parent reply other threads:[~2021-03-22 17:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 16:55 Joel Sherrill
2021-03-22 17:32 ` Luis Machado [this message]
2021-03-22 17:38 ` Joel Sherrill
2021-03-22 17:52 ` Luis Machado
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