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.h | |
| 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.h')
| -rw-r--r-- | target/arm/translate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target/arm/translate.h b/target/arm/translate.h index 45f04244be..c1b65f3efb 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -38,6 +38,7 @@ typedef struct DisasContext { int vec_stride; bool v7m_handler_mode; bool v8m_secure; /* true if v8M and we're in Secure mode */ + bool v8m_stackcheck; /* true if we need to perform v8M stack limit checks */ /* Immediate value in AArch32 SVC insn; must be set if is_jmp == DISAS_SWI * so that top level loop can generate correct syndrome information. */ |