diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2018-10-08 14:55:04 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-10-08 14:55:04 +0100 |
| commit | 4730fb85035e99c909db7d14ef76cd17f28f4423 (patch) | |
| tree | b3350a61e2e7e0e5f0afebb1fdb50ca37310f918 /target/arm/translate.c | |
| parent | 500d04843ba953dc4560e44f04001efec38c14a6 (diff) | |
target/arm: Define new TBFLAG for v8M stack checking
The Arm v8M architecture includes hardware stack limit checking.
When certain instructions update the stack pointer, if the new
value of SP is below the limit set in the associated limit register
then an exception is taken. Add a TB flag that tracks whether
the limit-checking code needs to be emitted.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20181002163556.10279-2-peter.maydell@linaro.org
Diffstat (limited to 'target/arm/translate.c')
| -rw-r--r-- | target/arm/translate.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target/arm/translate.c b/target/arm/translate.c index c6a5d2ac44..751d5811ce 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -12451,6 +12451,7 @@ static void arm_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) dc->v7m_handler_mode = ARM_TBFLAG_HANDLER(dc->base.tb->flags); dc->v8m_secure = arm_feature(env, ARM_FEATURE_M_SECURITY) && regime_is_secure(env, dc->mmu_idx); + dc->v8m_stackcheck = ARM_TBFLAG_STACKCHECK(dc->base.tb->flags); dc->cp_regs = cpu->cp_regs; dc->features = env->features; |