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target: armv8: fix support of pointer authentication 

The registers pauth_dmask and pauth_cmask are not accessible in
AARCH32 mode. Tagging them as 'hidden' is not enough and triggers
error:
	Failed to read pauth_dmask register
while halting the core.

Tag the pauth registers as not existing, unless required by user.

Note: for non existing registers there should be no need to
      allocate their register cache. Let's keep this for a further
      improvement.

Change-Id: Iaa0d006a3d8ee611ee93333ed49a8615a6c94276
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Fixes: d0436b0cda ("armv8: Add support of pointer authentication")
Reviewed-on: https://review.openocd.org/c/openocd/+/7712
Tested-by: jenkins
Reviewed-by: Koudai Iwahori <koudai@google.com>
This commit is contained in:
Antonio Borneo 2023-05-25 10:49:20 +02:00
parent 78688fea98
commit 4a57f3ebb2
1 changed files with 1 additions and 1 deletions
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2
src/target/armv8.c
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@ -1682,7 +1682,7 @@ struct reg_cache *armv8_build_reg_cache(struct target *target)
LOG_ERROR("unable to allocate reg type list"); LOG_ERROR("unable to allocate reg type list");
if (i == ARMV8_PAUTH_CMASK || i == ARMV8_PAUTH_DMASK) if (i == ARMV8_PAUTH_CMASK || i == ARMV8_PAUTH_DMASK)
reg_list[i].hidden = !armv8->enable_pauth; reg_list[i].exist = armv8->enable_pauth;
} }
arm->cpsr = reg_list + ARMV8_XPSR; arm->cpsr = reg_list + ARMV8_XPSR;