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| author | Peter Maydell <peter.maydell@linaro.org> | 2017-09-07 13:54:54 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-09-07 13:54:54 +0100 |
| commit | fb602cb726b3ebdd01ef3b1732d74baf9fee7ec9 (patch) | |
| tree | c703819a2a18f13e416d0800488a260fa7644788 /target/arm/translate.h | |
| parent | 61fcd69b0db268e7612b07fadc436b93def91768 (diff) | |
| download | qemu-fb602cb726b3ebdd01ef3b1732d74baf9fee7ec9.tar.gz | |
target/arm: Implement BXNS, and banked stack pointers
Implement the BXNS v8M instruction, which is like BX but will do a
jump-and-switch-to-NonSecure if the branch target address has bit 0
clear.
This is the first piece of code which implements "switch to the
other security state", so the commit also includes the code to
switch the stack pointers around, which is the only complicated
part of switching security state.
BLXNS is more complicated than just "BXNS but set the link register",
so we leave it for a separate commit.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1503414539-28762-21-git-send-email-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 2fe144baa9..ef625adaa2 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -32,6 +32,7 @@ typedef struct DisasContext { int vec_len; int vec_stride; bool v7m_handler_mode; + bool v8m_secure; /* true if v8M and we're in Secure mode */ /* Immediate value in AArch32 SVC insn; must be set if is_jmp == DISAS_SWI * so that top level loop can generate correct syndrome information. */ |