Miscellaneous Intrinsics

Note

Except for _enable() and _disable() ,these functions have not been implemented for Itanium(TM) instructions.

Intrinsic Description

void *_alloca(int)

 Allocates the buffers.

int _setjmp(jmp_buf)*

 A fast version of setjmp(), which bypasses the termination handling. Saves the callee-save registers, stack pointer and return address.

_exception_code(void)

 Returns the exception code.

_exception_info(void)

 Returns the exception information.

_abnormal_termination(void)

 an be invoked only by termination handlers. Returns TRUE if the termination handler is invoked as a result of a premature exit of the corresponding try-finally region.

void _enable()

 Enables the interrupt.

void _disable()

 Disables the interrupt.

int _bswap(int)

Intrinsic that maps to the IA-32 instruction BSWAP (swap bytes). Convert little/big endian 32 bit argument to big/little endian form

int _in_byte(int)

Intrinsic that maps to the IA-32 instruction IN. Transfer data byte from port specified by argument.

int _in_dword(int)

Intrinsic that maps to the IA-32 instruction IN. Transfer double word from port specified by argument.

int _in_word(int)

Intrinsic that maps to the IA-32 instruction IN. Transfer word from port specified by argument.

int _inp(int)

Same as _in_byte

int _inpd(int)

Same as _in_dword

int _inpw(int)

Same as _in_word

int _out_byte(int, int)

Intrinsic that maps to the IA-32 instruction OUT. Transfer data byte in second argument to port specified by first argument.

int _out_dword(int, int)

Intrinsic that maps to the IA-32 instruction OUT. Transfer double word in second argument to port specified by first argument.

int _out_word(int, int)

Intrinsic that maps to the IA-32 instruction OUT. Transfer word in second argument to port specified by first argument.

int _outp(int, int)

Same as _out_byte

int _outpd(int, int)

Same as _out_dword

int _outpw(int, int)

Same as _out_word

* Implemented as a library function call.