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[Regression] [PATCH] Do not print empty-group regs when printing general ones
- From: Luis Machado <luis dot machado at linaro dot org>
- To: Shahab Vahedi <Shahab dot Vahedi at synopsys dot com>, Shahab Vahedi <shahab dot vahedi at gmail dot com>, "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>
- Cc: Claudiu Zissulescu <Claudiu dot Zissulescu at synopsys dot com>, Francois Bedard <Francois dot Bedard at synopsys dot com>, Andrew Burgess <andrew dot burgess at embecosm dot com>
- Date: Fri, 28 Feb 2020 10:08:12 -0300
- Subject: [Regression] [PATCH] Do not print empty-group regs when printing general ones
- References: <20200120155315.30333-1-shahab.vahedi@gmail.com> <CH2PR12MB3847E492663E7997CFAB1741A6070@CH2PR12MB3847.namprd12.prod.outlook.com>
On 1/31/20 7:34 AM, Shahab Vahedi wrote:
This patch was reviewed once (as OK):
https://sourceware.org/ml/gdb-patches/2020-01/msg00613.html
Could someone review/merge it?
Cheers,
Shahab
FTR, this has broken general register printing for ARM/AArch64. Now
"info reg" shows nothing.
Given there are already remote stubs, probes and gdbservers running out
there, this is an undesirable change to have.
I had an IRC chat with Christian and he pointed me at some documentation
stating empty-group registers should not be printed, but i think this is
a case where the implementation has diverged from the documentation.
https://sourceware.org/gdb/current/onlinedocs/gdb/Target-Description-Format.html#Target-Description-Format
We could probably patch up any non-standard target description XML's
from now on, but the existing behavior may have to be preserved.
I haven't investigated this in depth yet to determine what can/should
change.