Exception handling. More...

Typedefs
typedef void(*	exception_handler_fn) (enum exception_type type, int subtype, void addr, arch_registers_state_t regs, arch_registers_fpu_state_t *fpuregs)
	Exception handler function. More...

Enumerations

Functions
errval_t	thread_set_exception_handler (exception_handler_fn newhandler, exception_handler_fn oldhandler, void new_stack_base, void new_stack_top, void old_stack_base, void *old_stack_top)
	Set the exception handler function for the current thread. Optionally also change its stack, and return the old values. More...

Detailed Description

Exception handling.

Typedef Documentation

typedef void(* exception_handler_fn) (enum exception_type type, int subtype, void *addr, arch_registers_state_t *regs, arch_registers_fpu_state_t *fpuregs)

Exception handler function.

Parameters

type	Exception type
subtype	Exception subtype
addr	Exception address
regs	Register state at time of exception
fpuregs	FPU state at time of exception. NULL if unused.

Returns: If this function returns, the register state specified in regs/fpuregs will be resumed.

Enumeration Type Documentation

enum exception_type

Enumerator
EXCEPT_PAGEFAULT	Page fault (or other memory access fault)
EXCEPT_BREAKPOINT	Software breakpoint.
EXCEPT_SINGLESTEP	Single-step execution.

enum pagefault_exception_type

Subtype for page fault exceptions.

Enumerator
PAGEFLT_READ	Read page fault.
PAGEFLT_WRITE	Write page fault.
PAGEFLT_EXEC	Execute (instruction fetch) page fault.

Function Documentation

errval_t thread_set_exception_handler	(	exception_handler_fn	newhandler,
		exception_handler_fn *	oldhandler,
		void *	new_stack_base,
		void *	new_stack_top,
		void **	old_stack_base,
		void **	old_stack_top
	)

Set the exception handler function for the current thread. Optionally also change its stack, and return the old values.