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target/arm: Enable API, APK bits in SCR, HCR

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These bits become writable with the ARMv8.3-PAuth extension.

Backports commit ef682cdb4aded5c65a018e175482e875de66059d from qemu
This commit is contained in:
Richard Henderson 2019-02-03 17:47:36 -05:00 committed by Lioncash
parent 0dd5bf84fc
commit 50cf5634da
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GPG Key ID: 4E3C3CC1031BA9C7
1 changed files with 6 additions and 0 deletions
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6
qemu/target/arm/helper.c
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@ -1655,6 +1655,9 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
if (cpu_isar_feature(aa64_lor, cpu)) {
valid_mask |= SCR_TLOR;
}
if (cpu_isar_feature(aa64_pauth, cpu)) {
valid_mask |= SCR_API | SCR_APK;
}
/* Clear all-context RES0 bits. */
value &= valid_mask;
@ -4023,6 +4026,9 @@ static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
if (cpu_isar_feature(aa64_lor, cpu)) {
valid_mask |= HCR_TLOR;
}
if (cpu_isar_feature(aa64_pauth, cpu)) {
valid_mask |= HCR_API | HCR_APK;
}
/* Clear RES0 bits. */
value &= valid_mask;