Intel Extensible Firmware Interface - Manual (Page 720)

Extensible Firmware Interface Specification
16-6 12/01/02 Version 1.10
EFI_DEBUG_SUPPORT_PROTOCOL.RegisterPeriodicCallback()
Summary
Registers a function to be called back periodically in interrupt context.
Prototype
typedef
EFI_STATUS
(EFIAPI *EFI_REGISTER_PERIODIC_CALLBACK) (
IN EFI_DEBUG_SUPPORT_PROTOCOL
*This,
IN UINTN ProcessorIndex,
IN EFI_PERIODIC_CALLBACK PeriodicCallback
);
Parameters
This A pointer to the EFI_DEBUG_SUPPORT_PROTOCOL instance.
Type EFI_DEBUG_SUPPORT_PROTOCOL is defined in Section 16.2.
ProcessorIndex Specifies which processor the callback function applies to.
PeriodicCallback A pointer to a function of type PERIODIC_CALLBACK that is the
main periodic entry point of the debug agent. It receives as a
parameter a pointer to the full context of the interrupted execution
thread.
Related Definitions
typedef
VOID (*EFI_PERIODIC_CALLBACK) (
IN OUT EFI_SYSTEM_CONTEXT
SystemContext
);
typedef union {
EFI_SYSTEM_CONTEXT_EBC
*SystemContextEbc,
EFI_SYSTEM_CONTEXT_IA32 *SystemContextIa32,
EFI_SYSTEM_CONTEXT_IPF *SystemContextIpf
} EFI_SYSTEM_CONTEXT;
// System context for virtual EBC processors
typedef struct {
UINT64
R0, R1, R2, R3, R4, R5, R6, R7;
UINT64 Flags;
UINT64 ControlFlags;
UINT64 Ip;
} EFI_SYSTEM_CONTEXT_EBC;