Commit 81dd9648 authored by Michael Davidsaver's avatar Michael Davidsaver Committed by Peter Maydell
Browse files

armv7m: set CFSR.UNDEFINSTR on undefined instructions 



When we take an exception for an undefined instruction, set the
appropriate CFSR bit.

Signed-off-by: default avatarMichael Davidsaver <mdavidsaver@gmail.com>
Reviewed-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Message-id: 1485285380-10565-7-git-send-email-peter.maydell@linaro.org
[PMM: tweaked commit message, comment]
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent dc858c66

target/arm/helper.c

+1 −0
Original line number Diff line number Diff line
@@ -6072,6 +6072,7 @@ void arm_v7m_cpu_do_interrupt(CPUState *cs) 
    switch (cs->exception_index) {

    case EXCP_UDEF:

        armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);

        env->v7m.cfsr |= R_V7M_CFSR_UNDEFINSTR_MASK;

        return;

    case EXCP_SWI:

        /* The PC already points to the next instruction.  */