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(parent: 9626402) | patch
armv7a: access monitor registers only with security extensions 59/5259/2
authorAntonio Borneo <borneo.antonio@gmail.com>
Mon, 24 Jun 2019 16:28:31 +0000 (18:28 +0200)
committerAntonio Borneo <borneo.antonio@gmail.com>
Thu, 12 Mar 2020 10:10:33 +0000 (10:10 +0000)
commit6900c5af4ec3f6df52227169d7d897eb14a44bca
tree7184ed8e9a6ffbe67dfd0371cafd290e73248d2btree | snapshot
parent9626402c5a65423d4e4e9091f710b542522ca125commit | diff
armv7a: access monitor registers only with security extensions

Accordingly to ARM DDI 0406C at B1.5, the security extensions for
armv7a are optional extensions and can be detected by reading
ID_PFR1.
The monitor mode is part of the security extensions and the shadow
registers "sp_mon", "lr_mon" and "spsr_mon" are only present with
the security extensions.

Read the register ID_PFR1 during cortex_a examine, determine if
security extension is present and then conditionally enable the
visibility of the monitor mode shadow registers.

Change-Id: Ib4834698659046566f6dc5cd35b44de122dc02e5
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5259
Tested-by: jenkins
src/target/armv7a.h diff | blob | history
src/target/cortex_a.c diff | blob | history
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