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target/arm: Fix Secure PL1 tests in fp_exception_el 

We were using arm_is_secure and is_a64, which are
tests against the current EL, as opposed to
arm_el_is_aa64 and arm_is_secure_below_el3, which
can be applied to a different EL than current.
Consolidate the two tests.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220609202901.1177572-24-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-06-10 14:32:35 +01:00 committed by Peter Maydell
parent 38e8a13c11
commit 02e1de14bc
1 changed files with 9 additions and 14 deletions
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23
target/arm/helper.c
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@ -10879,27 +10879,22 @@ int fp_exception_el(CPUARMState *env, int cur_el)
int fpen = FIELD_EX64(env->cp15.cpacr_el1, CPACR_EL1, FPEN);
switch (fpen) {
case 1:
if (cur_el != 0) {
break;
}
/* fall through */
case 0:
case 2:
if (cur_el == 0 || cur_el == 1) {
/* Trap to PL1, which might be EL1 or EL3 */
if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) {
return 3;
}
return 1;
}
if (cur_el == 3 && !is_a64(env)) {
/* Secure PL1 running at EL3 */
/* Trap from Secure PL0 or PL1 to Secure PL1. */
if (!arm_el_is_aa64(env, 3)
&& (cur_el == 3 || arm_is_secure_below_el3(env))) {
return 3;
}
break;
case 1:
if (cur_el == 0) {
if (cur_el <= 1) {
return 1;
}
break;
case 3:
break;
}
}