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| 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 | 86f026de22d8854eecc004af44895de74225794f (patch) | |
| tree | c79c9feeda29a5228e9bebabd6da68579c7eaea3 /target/arm/helper.c | |
| parent | 4730fb85035e99c909db7d14ef76cd17f28f4423 (diff) | |
| download | focaccia-qemu-86f026de22d8854eecc004af44895de74225794f.tar.gz focaccia-qemu-86f026de22d8854eecc004af44895de74225794f.zip | |
target/arm: Define new EXCP type for v8M stack overflows
Define EXCP_STKOF, and arrange for it to cause us to take a UsageFault with CFSR.STKOF set. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20181002163556.10279-3-peter.maydell@linaro.org
Diffstat (limited to 'target/arm/helper.c')
| -rw-r--r-- | target/arm/helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 0807173eac..a9a2173cb2 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -7539,6 +7539,7 @@ static void arm_log_exception(int idx) [EXCP_SEMIHOST] = "Semihosting call", [EXCP_NOCP] = "v7M NOCP UsageFault", [EXCP_INVSTATE] = "v7M INVSTATE UsageFault", + [EXCP_STKOF] = "v8M STKOF UsageFault", }; if (idx >= 0 && idx < ARRAY_SIZE(excnames)) { @@ -7694,6 +7695,10 @@ void arm_v7m_cpu_do_interrupt(CPUState *cs) armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_INVSTATE_MASK; break; + case EXCP_STKOF: + armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE, env->v7m.secure); + env->v7m.cfsr[env->v7m.secure] |= R_V7M_CFSR_STKOF_MASK; + break; case EXCP_SWI: /* The PC already points to the next instruction. */ armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC, env->v7m.secure); |