You must use GAS and GLD from GNU binutils version 2.7 or later for
this attribute to work correctly.
+@item exception
+@cindex exception handler functions on the RX processor
+Use this attribute on the RX to indicate that the specified function
+is an exception handler. The compiler will generate function entry and
+exit sequences suitable for use in an exception handler when this
+attribute is present.
+
@item exception_handler
@cindex exception handler functions on the Blackfin processor
Use this attribute on the Blackfin to indicate that the specified function
@item fast_interrupt
@cindex interrupt handler functions
-Use this attribute on the M32C port to indicate that the specified
+Use this attribute on the M32C and RX ports to indicate that the specified
function is a fast interrupt handler. This is just like the
@code{interrupt} attribute, except that @code{freit} is used to return
instead of @code{reit}.
@item interrupt
@cindex interrupt handler functions
-Use this attribute on the ARM, AVR, CRX, M32C, M32R/D, m68k, MeP, MIPS
-and Xstormy16 ports to indicate that the specified function is an
+Use this attribute on the ARM, AVR, CRX, M32C, M32R/D, m68k, MeP, MIPS,
+RX and Xstormy16 ports to indicate that the specified function is an
interrupt handler. The compiler will generate function entry and exit
sequences suitable for use in an interrupt handler when this attribute
is present.
@item naked
@cindex function without a prologue/epilogue code
-Use this attribute on the ARM, AVR, IP2K and SPU ports to indicate that
+Use this attribute on the ARM, AVR, IP2K, RX and SPU ports to indicate that
the specified function does not need prologue/epilogue sequences generated by
the compiler. It is up to the programmer to provide these sequences. The
only statements that can be safely included in naked functions are
* Other MIPS Built-in Functions::
* picoChip Built-in Functions::
* PowerPC AltiVec/VSX Built-in Functions::
+* RX Built-in Functions::
* SPARC VIS Built-in Functions::
* SPU Built-in Functions::
@end menu
int __builtin_bswap16 (int);
@end smallexample
+@node RX Built-in Functions
+@subsection RX Built-in Functions
+GCC supports some of the RX instructions which cannot be expressed in
+the C programming language via the use of built-in functions. The
+following functions are supported:
+
+@deftypefn {Built-in Function} void __builtin_rx_brk (void)
+Generates the @code{brk} machine instruction.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_clrpsw (int)
+Generates the @code{clrpsw} machine instruction to clear the specified
+bit in the processor status word.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_int (int)
+Generates the @code{int} machine instruction to generate an interrupt
+with the specified value.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_machi (int, int)
+Generates the @code{machi} machine instruction to add the result of
+multiplying the top 16-bits of the two arguments into the
+accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_maclo (int, int)
+Generates the @code{maclo} machine instruction to add the result of
+multiplying the bottom 16-bits of the two arguments into the
+accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_mulhi (int, int)
+Generates the @code{mulhi} machine instruction to place the result of
+multiplying the top 16-bits of the two arguments into the
+accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_mullo (int, int)
+Generates the @code{mullo} machine instruction to place the result of
+multiplying the bottom 16-bits of the two arguments into the
+accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} int __builtin_rx_mvfachi (void)
+Generates the @code{mvfachi} machine instruction to read the top
+32-bits of the accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} int __builtin_rx_mvfacmi (void)
+Generates the @code{mvfacmi} machine instruction to read the middle
+32-bits of the accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} int __builtin_rx_mvfc (int)
+Generates the @code{mvfc} machine instruction which reads the control
+register specified in its argument and returns its value.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_mvtachi (int)
+Generates the @code{mvtachi} machine instruction to set the top
+32-bits of the accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_mvtaclo (int)
+Generates the @code{mvtaclo} machine instruction to set the bottom
+32-bits of the accumulator.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_mvtc (int reg, int val)
+Generates the @code{mvtc} machine instruction which sets control
+register number @code{reg} to @code{val}.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_mvtipl (int)
+Generates the @code{mvtipl} machine instruction set the interrupt
+priority level.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_racw (int)
+Generates the @code{racw} machine instruction to round the accumulator
+according to the specified mode.
+@end deftypefn
+
+@deftypefn {Built-in Function} int __builtin_rx_revw (int)
+Generates the @code{revw} machine instruction which swaps the bytes in
+the argument so that bits 0--7 now occupy bits 8--15 and vice versa,
+and also bits 16--23 occupy bits 24--31 and vice versa.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_rmpa (void)
+Generates the @code{rmpa} machine instruction which initiates a
+repeated multiply and accumulate sequence.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_round (float)
+Generates the @code{round} machine instruction which returns the
+floating point argument rounded according to the current rounding mode
+set in the floating point status word register.
+@end deftypefn
+
+@deftypefn {Built-in Function} int __builtin_rx_sat (int)
+Generates the @code{sat} machine instruction which returns the
+saturated value of the argument.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_setpsw (int)
+Generates the @code{setpsw} machine instruction to set the specified
+bit in the processor status word.
+@end deftypefn
+
+@deftypefn {Built-in Function} void __builtin_rx_wait (void)
+Generates the @code{wait} machine instruction.
+@end deftypefn
+
@node SPARC VIS Built-in Functions
@subsection SPARC VIS Built-in Functions
@end table
-
@node RS/6000 and PowerPC Pragmas
@subsection RS/6000 and PowerPC Pragmas
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