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Luis Machado ba60b96371 [aarch64] Add TPIDR2 register support for Linux 
With the AArch64 Scalable Matrix Extension we have a new TPIDR2 register, and
it will be added to the existing NT_ARM_TLS register set. Kernel patches are
being reviewed here:

https://lore.kernel.org/linux-arm-kernel/20220818170111.351889-1-broonie@kernel.org/

From GDB's perspective, we handle it in a similar way to the existing TPIDR
register. But we need to consider cases of systems that only have TPIDR and
systems that have both TPIDR and TPIDR2.

With that in mind, the following patch adds the required code to support
TPIDR2 and turns the org.gnu.gdb.aarch64.tls feature into a
dynamically-generated target description as opposed to a static target
description containing only TPIDR.

That means we can remove the gdb/features/aarch64-tls.xml file and replace the
existing gdb/features/aarch64-tls.c auto-generated file with a new file that
dynamically generates the target description containing either TPIDR alone or
TPIDR and TPIDR2.

In the future, when *BSD's start to support this register, they can just
enable it as is being done for the AArch64 Linux target.

The core file read/write code has been updated to support TPIDR2 as well.

On GDBserver's side, there is a small change to the find_regno function to
expose a non-throwing version of it.

It always seemed strange to me how find_regno causes the whole operation to
abort if it doesn't find a particular register name. The patch moves code
from find_regno into find_regno_no_throw and makes find_regno call
find_regno_no_throw instead.

This allows us to do register name lookups to find a particular register
number without risking erroring out if nothing is found.

The patch also adjusts the feature detection code for aarch64-fbsd, since
the infrastructure is shared amongst all aarch64 targets. I haven't added
code to support TPIDR2 in aarch64-fbsd though, as I'm not sure when/if
that will happen.
2022-12-09 13:41:15 +00:00
..
arc Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
arm cleanup: Add missing feature/ XML files to Makefile 2022-09-29 10:00:13 -07:00
i386 gdb: Consolidate 32bit-pkeys.xml and 64bit-pkeys.xml 2022-03-31 10:25:26 -07:00
loongarch gdb/gdbserver: LoongArch: Improve implementation of fcc registers 2022-08-09 22:22:23 +08:00
riscv gdb/riscv: better support for fflags and frm registers 2022-08-31 16:07:05 +01:00
rs6000 gdb: check for duplicate register names in selftest 2022-10-02 14:21:24 +01:00
sparc Constify target_desc declarations 2022-09-29 10:00:13 -07:00
aarch64-core.c Expose the BTI BTYPE more explicitly in the registers 2021-11-17 10:55:44 -03:00
aarch64-core.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
aarch64-fpu.c [AArch64] Update FPSR/FPCR fields for FPU and SVE 2022-10-04 09:14:34 +01:00
aarch64-fpu.xml [AArch64] Update FPSR/FPCR fields for FPU and SVE 2022-10-04 09:14:34 +01:00
aarch64-mte.c AArch64: Add target description/feature for MTE registers 2021-03-24 14:52:08 -03:00
aarch64-mte.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
aarch64-pauth.c
aarch64-pauth.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
aarch64-sve.c [AArch64] Update FPSR/FPCR fields for FPU and SVE 2022-10-04 09:14:34 +01:00
aarch64-tls.c [aarch64] Add TPIDR2 register support for Linux 2022-12-09 13:41:15 +00:00
btrace-conf.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
btrace.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
cskyv2-linux.c gdb/csky add cskyv2-linux.xml for cskyv2-linux.c 2022-09-23 10:46:44 +08:00
cskyv2-linux.xml gdb/csky add cskyv2-linux.xml for cskyv2-linux.c 2022-09-23 10:46:44 +08:00
feature_to_c.sh Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
gdb-target.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
gdbserver-regs.xsl
library-list-aix.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
library-list-svr4.dtd gdb, gdbserver: extend RSP to support namespaces 2022-10-18 14:16:09 +02:00
library-list.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
m68k-core.xml
Makefile [aarch64] Add TPIDR2 register support for Linux 2022-12-09 13:41:15 +00:00
microblaze-core.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
microblaze-stack-protect.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
microblaze-with-stack-protect.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
microblaze-with-stack-protect.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
microblaze.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
microblaze.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips-cp0.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips-cpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips-dsp-linux.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
mips-dsp-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips-dsp.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips-fpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips-linux.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
mips-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips64-cp0.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips64-cpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips64-dsp-linux.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
mips64-dsp-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips64-dsp.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips64-fpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
mips64-linux.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
mips64-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nds32-core.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nds32-fpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nds32-system.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nds32.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
nds32.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nios2-cpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nios2-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
nios2.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
nios2.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
number-regs.xsl
or1k-core.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
or1k-linux.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
or1k-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
or1k.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
or1k.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
osdata.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
rx.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
rx.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-acr.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-core32.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-core64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-fpr.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-gs-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-gs-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-gs.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-gsbc.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-linux32.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-linux32.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-linux32v1.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-linux32v1.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-linux32v2.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-linux32v2.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-linux64v1.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-linux64v1.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-linux64v2.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-linux64v2.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-tdb.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-te-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-te-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-tevx-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-tevx-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-vx-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390-vx-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390-vx.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-core64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-gs-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-gs-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-linux64v1.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-linux64v1.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-linux64v2.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-linux64v2.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-te-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-te-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-tevx-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-tevx-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
s390x-vx-linux64.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
s390x-vx-linux64.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
sort-regs.xsl
threads.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
tic6x-c6xp.c
tic6x-c6xp.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
tic6x-c62x-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
tic6x-c64x-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
tic6x-c64xp-linux.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
tic6x-core.c
tic6x-core.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
tic6x-gp.c
tic6x-gp.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
traceframe-info.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
xinclude.dtd Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
z80-cpu.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00
z80.c Constify target_desc declarations 2022-09-29 10:00:13 -07:00
z80.xml Automatic Copyright Year update after running gdb/copyright.py 2022-01-01 19:13:23 +04:00