target/arm: Log fault address for M-profile faults

For M-profile, the fault address is not always exposed to the guest
in a fault register (for instance the BFAR bus fault address register
is only updated for bus faults on data accesses, not instruction
accesses).  Currently we log the address only if we're putting it
into a particular guest-visible register.  Since we always have it,
log it generically, to make logs of i-side faults a bit clearer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20220315204306.2797684-3-peter.maydell@linaro.org

target/arm/m_helper.c

@@ -2272,7 +2272,13 @@ void arm_v7m_cpu_do_interrupt(CPUState *cs)
          * Note that for M profile we don't have a guest facing FSR, but
          * the env->exception.fsr will be populated by the code that
          * raises the fault, in the A profile short-descriptor format.
+         *
+         * Log the exception.vaddress now regardless of subtype, because
+         * logging below only logs it when it goes into a guest visible
+         * register.
          */
+        qemu_log_mask(CPU_LOG_INT, "...at fault address 0x%x\n",
+                      (uint32_t)env->exception.vaddress);
         switch (env->exception.fsr & 0xf) {
         case M_FAKE_FSR_NSC_EXEC:
             /*