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target/arm: Implement LDG, STG, ST2G instructions

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Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200626033144.790098-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2020-06-25 20:31:13 -07:00 • committed by Peter Maydell
parent 0d1762e931
commit c15294c1e3
5 changed files with 386 additions and 5 deletions
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16
target/arm/op_helper.c
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@ -935,3 +935,19 @@ uint32_t HELPER(ror_cc)(CPUARMState *env, uint32_t x, uint32_t i)
return ((uint32_t)x >> shift) | (x << (32 - shift));
}
}
void HELPER(probe_access)(CPUARMState *env, target_ulong ptr,
uint32_t access_type, uint32_t mmu_idx,
uint32_t size)
{
uint32_t in_page = -((uint32_t)ptr | TARGET_PAGE_SIZE);
uintptr_t ra = GETPC();
if (likely(size <= in_page)) {
probe_access(env, ptr, size, access_type, mmu_idx, ra);
} else {
probe_access(env, ptr, in_page, access_type, mmu_idx, ra);
probe_access(env, ptr + in_page, size - in_page,
access_type, mmu_idx, ra);
}
}