trap.hpp File Reference

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Data Structures
struct	trapinfo_t
	Contains information about a decoded trap instruction. More...

Typedefs
typedef struct trapinfo_t	trapinfo_t
	Contains information about a decoded trap instruction. More...

Enumerations
enum	{   TRAP_SIGRESERVED = 0, TRAP_SIGSEGV = 1, TRAP_SIGILL = 2, TRAP_SIGTRAP = 3,   TRAP_SIGFPE = 4, TRAP_SIGEND }
	Trap signal number defines. More...

Functions
void	trap_init (void)
	Mmap the first memory page to support hardware exceptions and check the maximum hardware trap displacement on the architectures where it is required (TRAP_INSTRUCTION_IS_LOAD defined to 1). More...
void	trap_handle (int sig, void *xpc, void *context)
	Handles the signal which is generated by trap instructions, caught by a signal handler and calls the correct function. More...
bool	md_trap_decode (trapinfo_t *trp, int sig, void *xpc, executionstate_t *es)
	Decode the trap instruction at the given PC. More...

Typedef Documentation

typedef struct trapinfo_t trapinfo_t

Contains information about a decoded trap instruction.

Enumeration Type Documentation

anonymous enum

Trap signal number defines.

Use these instead of the signal numbers provided by your specific OS.

Enumerator
TRAP_SIGRESERVED
TRAP_SIGSEGV
TRAP_SIGILL
TRAP_SIGTRAP
TRAP_SIGFPE
TRAP_SIGEND

Definition at line 52 of file trap.hpp.

Function Documentation

bool md_trap_decode	(	trapinfo_t *	trp,
		int	sig,
		void *	_xpc,
		executionstate_t *	es
	)

Decode the trap instruction at the given PC.

Parameters

trp	information about trap to be filled
sig	signal number
xpc	exception PC
es	execution state of the machine

Returns

true if trap was decoded successfully, false otherwise.

Definition at line 192 of file md.cpp.

void trap_handle	(	int	sig,
		void *	xpc,
		void *	context
	)

Handles the signal which is generated by trap instructions, caught by a signal handler and calls the correct function.

Parameters

sig	signal number
xpc	exception PC
context	pointer to OS dependent machine context

Definition at line 101 of file trap.cpp.

void trap_init

(

void

)

Mmap the first memory page to support hardware exceptions and check the maximum hardware trap displacement on the architectures where it is required (TRAP_INSTRUCTION_IS_LOAD defined to 1).

Definition at line 68 of file trap.cpp.