From 597610eb39f8a2d5c8146007c1ac37c623c23645 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Mon, 8 Oct 2018 14:55:04 +0100 Subject: target/arm: Add v8M stack limit checks on NS function calls Check the v8M stack limits when pushing the frame for a non-secure function call via BLXNS. In order to be able to generate the exception we need to promote raise_exception() from being local to op_helper.c so we can call it from helper.c. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20181002163556.10279-8-peter.maydell@linaro.org --- target/arm/internals.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'target/arm/internals.h') diff --git a/target/arm/internals.h b/target/arm/internals.h index bb5a63d6fe..a4fc709bcc 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -94,6 +94,15 @@ FIELD(V7M_EXCRET, RES1, 7, 25) /* including the must-be-1 prefix */ #define M_FAKE_FSR_NSC_EXEC 0xf /* NS executing in S&NSC memory */ #define M_FAKE_FSR_SFAULT 0xe /* SecureFault INVTRAN, INVEP or AUVIOL */ +/** + * raise_exception: Raise the specified exception. + * Raise a guest exception with the specified value, syndrome register + * and target exception level. This should be called from helper functions, + * and never returns because we will longjump back up to the CPU main loop. + */ +void QEMU_NORETURN raise_exception(CPUARMState *env, uint32_t excp, + uint32_t syndrome, uint32_t target_el); + /* * For AArch64, map a given EL to an index in the banked_spsr array. * Note that this mapping and the AArch32 mapping defined in bank_number() -- cgit v1.2.3-55-g7522