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Core_Mode_Change

Provided By

Simics Core

Callback Type

void (*)(lang_void *callback_data,
conf_object_t *trigger_obj, integer_t old_mode,
integer_t new_mode);

Description

Triggered when a processor changes privilege mode for whatever reason; usually an exception or return from an exception. The hap occurs after the processor has changed mode but before any instructions have been executed in the new mode.

For IA-64 processors, the modes are privilege levels (0-3).

For Alpha processors, the modes are Alpha processor modes (0-3), 0 being Kernel mode and 3 User mode.

For other processors, the modes are Sim_CPU_Mode_User or Sim_CPU_Mode_Supervisor. The UltraSPARC T1 processor also has the Sim_CPU_Mode_Hypervisor mode.

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