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target/arm: Use TRAP_UNCATEGORIZED for XScale CPAR traps

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On XScale CPUs, there is no EL2 or AArch64, so no syndrome register.
These traps are just UNDEFs in the traditional AArch32 sense, so
CP_ACCESS_TRAP_UNCATEGORIZED is more accurate than CP_ACCESS_TRAP.
This has no visible behavioural change, because the guest doesn't
have a way to see the syndrome value we generate.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250130182309.717346-12-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2025-01-30 18:23:06 +00:00
parent 2d60f1acdb
commit f706b67da6
1 changed files with 1 additions and 1 deletions
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2
target/arm/tcg/op_helper.c
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@ -764,7 +764,7 @@ const void *HELPER(access_check_cp_reg)(CPUARMState *env, uint32_t key,
if (arm_feature(env, ARM_FEATURE_XSCALE) && ri->cp < 14
&& extract32(env->cp15.c15_cpar, ri->cp, 1) == 0) {
res = CP_ACCESS_TRAP;
res = CP_ACCESS_TRAP_UNCATEGORIZED;
goto fail;
}