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target/arm: Implement BLXNS

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Implement the BLXNS instruction, which allows secure code to
call non-secure code.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1507556919-24992-4-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2017-10-09 14:48:33 +01:00
parent 333e10c51e
commit 3e3fa230e3
4 changed files with 76 additions and 2 deletions
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1
target/arm/internals.h
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@ -60,6 +60,7 @@ static inline bool excp_is_internal(int excp)
FIELD(V7M_CONTROL, NPRIV, 0, 1)
FIELD(V7M_CONTROL, SPSEL, 1, 1)
FIELD(V7M_CONTROL, FPCA, 2, 1)
FIELD(V7M_CONTROL, SFPA, 3, 1)
/* Bit definitions for v7M exception return payload */
FIELD(V7M_EXCRET, ES, 0, 1)