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target-arm: Stage 2 permission fault was fixed in AArch32 state

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As described in AArch32.CheckS2Permission an instruction fetch fails if
XN bit is set or there is no read permission for the address.

Signed-off-by: Sergey Sorokin <afarallax@yandex.ru>
Message-id: 1461002400-3187-1-git-send-email-afarallax@yandex.ru
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Sergey Sorokin 2016-05-12 13:22:26 +01:00 committed by Peter Maydell
parent 0b062eb090
commit dfda68377e
1 changed files with 3 additions and 1 deletions
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4
target-arm/helper.c
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@ -6708,7 +6708,9 @@ static int get_S2prot(CPUARMState *env, int s2ap, int xn)
prot |= PAGE_WRITE; prot |= PAGE_WRITE;
} }
if (!xn) { if (!xn) {
prot |= PAGE_EXEC; if (arm_el_is_aa64(env, 2) || prot & PAGE_READ) {
prot |= PAGE_EXEC;
}
} }
return prot; return prot;
} }