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Diffstat (limited to '')
| -rw-r--r-- | cpukit/score/cpu/avr/avr/interrupt.h | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/cpukit/score/cpu/avr/avr/interrupt.h b/cpukit/score/cpu/avr/avr/interrupt.h deleted file mode 100644 index 8dd5e26d09..0000000000 --- a/cpukit/score/cpu/avr/avr/interrupt.h +++ /dev/null @@ -1,343 +0,0 @@ -/* Copyright (c) 2002,2005,2007 Marek Michalkiewicz - Copyright (c) 2007, Dean Camera - - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - - * Neither the name of the copyright holders nor the names of - contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. */ - - -#ifndef _AVR_INTERRUPT_H_ -#define _AVR_INTERRUPT_H_ - -#include <avr/io.h> - -#if !defined(__DOXYGEN__) && !defined(__STRINGIFY) -/* Auxiliary macro for ISR_ALIAS(). */ -#define __STRINGIFY(x) #x -#endif /* !defined(__DOXYGEN__) */ - -/** -\file -\@{ -*/ - - -/** \name Global manipulation of the interrupt flag - - The global interrupt flag is maintained in the I bit of the status - register (SREG). -*/ - -#if defined(__DOXYGEN__) -/** \def sei() - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Enables interrupts by setting the global interrupt mask. This function - actually compiles into a single line of assembly, so there is no function - call overhead. */ -#define sei() -#else /* !DOXYGEN */ -# define sei() __asm__ __volatile__ ("sei" ::) -#endif /* DOXYGEN */ - -#if defined(__DOXYGEN__) -/** \def cli() - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Disables all interrupts by clearing the global interrupt mask. This function - actually compiles into a single line of assembly, so there is no function - call overhead. */ -#define cli() -#else /* !DOXYGEN */ -# define cli() __asm__ __volatile__ ("cli" ::) -#endif /* DOXYGEN */ - - -/** \name Macros for writing interrupt handler functions */ - - -#if defined(__DOXYGEN__) -/** \def ISR(vector [, attributes]) - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Introduces an interrupt handler function (interrupt service - routine) that runs with global interrupts initially disabled - by default with no attributes specified. - - The attributes are optional and alter the behaviour and resultant - generated code of the interrupt routine. Multiple attributes may - be used for a single function, with a space seperating each - attribute. - - Valid attributes are ISR_BLOCK, ISR_NOBLOCK, ISR_NAKED and - ISR_ALIASOF(vect). - - \c vector must be one of the interrupt vector names that are - valid for the particular MCU type. -*/ -# define ISR(vector, [attributes]) -#else /* real code */ - -#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) || (__GNUC__ > 4) -# define __INTR_ATTRS used, externally_visible -#else /* GCC < 4.1 */ -# define __INTR_ATTRS used -#endif - -#ifdef __cplusplus -# define ISR(vector, ...) \ - extern "C" void vector (void) __attribute__ ((signal,__INTR_ATTRS)) __VA_ARGS__; \ - void vector (void) -#else -# define ISR(vector, ...) \ - void vector (void) __attribute__ ((signal,__INTR_ATTRS)) __VA_ARGS__; \ - void vector (void) -#endif - -#endif /* DOXYGEN */ - -#if defined(__DOXYGEN__) -/** \def SIGNAL(vector) - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Introduces an interrupt handler function that runs with global interrupts - initially disabled. - - This is the same as the ISR macro without optional attributes. - \deprecated Do not use SIGNAL() in new code. Use ISR() instead. -*/ -# define SIGNAL(vector) -#else /* real code */ - -#ifdef __cplusplus -# define SIGNAL(vector) \ - extern "C" void vector(void) __attribute__ ((signal, __INTR_ATTRS)); \ - void vector (void) -#else -# define SIGNAL(vector) \ - void vector (void) __attribute__ ((signal, __INTR_ATTRS)); \ - void vector (void) -#endif - -#endif /* DOXYGEN */ - -#if defined(__DOXYGEN__) -/** \def EMPTY_INTERRUPT(vector) - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Defines an empty interrupt handler function. This will not generate - any prolog or epilog code and will only return from the ISR. Do not - define a function body as this will define it for you. - Example: - \code EMPTY_INTERRUPT(ADC_vect);\endcode */ -# define EMPTY_INTERRUPT(vector) -#else /* real code */ - -#ifdef __cplusplus -# define EMPTY_INTERRUPT(vector) \ - extern "C" void vector(void) __attribute__ ((signal,naked,__INTR_ATTRS)); \ - void vector (void) { __asm__ __volatile__ ("reti" ::); } -#else -# define EMPTY_INTERRUPT(vector) \ - void vector (void) __attribute__ ((signal,naked,__INTR_ATTRS)); \ - void vector (void) { __asm__ __volatile__ ("reti" ::); } -#endif - -#endif /* DOXYGEN */ - -#if defined(__DOXYGEN__) -/** \def ISR_ALIAS(vector, target_vector) - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Aliases a given vector to another one in the same manner as the - ISR_ALIASOF attribute for the ISR() macro. Unlike the ISR_ALIASOF - attribute macro however, this is compatible for all versions of - GCC rather than just GCC version 4.2 onwards. - - \note This macro creates a trampoline function for the aliased - macro. This will result in a two cycle penalty for the aliased - vector compared to the ISR the vector is aliased to, due to the - JMP/RJMP opcode used. - - \deprecated - For new code, the use of ISR(..., ISR_ALIASOF(...)) is - recommended. - - Example: - \code - ISR(INT0_vect) - { - PORTB = 42; - } - - ISR_ALIAS(INT1_vect, INT0_vect); - \endcode -*/ -# define ISR_ALIAS(vector, target_vector) -#else /* real code */ - -#ifdef __cplusplus -# if defined(__AVR_MEGA__) && __AVR_MEGA__ -# define ISR_ALIAS(vector, tgt) extern "C" void vector (void) \ - __attribute__((signal, naked, __INTR_ATTRS)); \ - void vector (void) { __asm__ volatile ("jmp " __STRINGIFY(tgt) ::); } -# else /* !__AVR_MEGA */ -# define ISR_ALIAS(vector, tgt) extern "C" void vector (void) \ - __attribute__((signal, naked, __INTR_ATTRS)); \ - void vector (void) { __asm__ volatile ("rjmp " __STRINGIFY(tgt) ::); } -# endif /* __AVR_MEGA__ */ -#else /* !__cplusplus */ -# if defined(__AVR_MEGA__) && __AVR_MEGA__ -# define ISR_ALIAS(vector, tgt) void vector (void) \ - __attribute__((signal, naked, __INTR_ATTRS)); \ - void vector (void) { __asm__ volatile ("jmp " __STRINGIFY(tgt) ::); } -# else /* !__AVR_MEGA */ -# define ISR_ALIAS(vector, tgt) void vector (void) \ - __attribute__((signal, naked, __INTR_ATTRS)); \ - void vector (void) { __asm__ volatile ("rjmp " __STRINGIFY(tgt) ::); } -# endif /* __AVR_MEGA__ */ -#endif /* __cplusplus */ - -#endif /* DOXYGEN */ - -#if defined(__DOXYGEN__) -/** \def reti() - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - Returns from an interrupt routine, enabling global interrupts. This should - be the last command executed before leaving an ISR defined with the ISR_NAKED - attribute. - - This macro actually compiles into a single line of assembly, so there is - no function call overhead. -*/ -# define reti() -#else /* !DOXYGEN */ -# define reti() __asm__ __volatile__ ("reti" ::) -#endif /* DOXYGEN */ - -#if defined(__DOXYGEN__) -/** \def BADISR_vect - \ingroup avr_interrupts - - \code #include <avr/interrupt.h> \endcode - - This is a vector which is aliased to __vector_default, the vector - executed when an ISR fires with no accompanying ISR handler. This - may be used along with the ISR() macro to create a catch-all for - undefined but used ISRs for debugging purposes. -*/ -# define BADISR_vect -#else /* !DOXYGEN */ -# define BADISR_vect __vector_default -#endif /* DOXYGEN */ - -/** \name ISR attributes */ - -#if defined(__DOXYGEN__) -/** \def ISR_BLOCK - \ingroup avr_interrupts - - \code# include <avr/interrupt.h> \endcode - - Identical to an ISR with no attributes specified. Global - interrupts are initially disabled by the AVR hardware when - entering the ISR, without the compiler modifying this state. - - Use this attribute in the attributes parameter of the ISR macro. -*/ -# define ISR_BLOCK - -/** \def ISR_NOBLOCK - \ingroup avr_interrupts - - \code# include <avr/interrupt.h> \endcode - - ISR runs with global interrupts initially enabled. The interrupt - enable flag is activated by the compiler as early as possible - within the ISR to ensure minimal processing delay for nested - interrupts. - - This may be used to create nested ISRs, however care should be - taken to avoid stack overflows, or to avoid infinitely entering - the ISR for those cases where the AVR hardware does not clear the - respective interrupt flag before entering the ISR. - - Use this attribute in the attributes parameter of the ISR macro. -*/ -# define ISR_NOBLOCK - -/** \def ISR_NAKED - \ingroup avr_interrupts - - \code# include <avr/interrupt.h> \endcode - - ISR is created with no prologue or epilogue code. The user code is - responsible for preservation of the machine state including the - SREG register, as well as placing a reti() at the end of the - interrupt routine. - - Use this attribute in the attributes parameter of the ISR macro. -*/ -# define ISR_NAKED - -/** \def ISR_ALIASOF(target_vector) - \ingroup avr_interrupts - - \code#include <avr/interrupt.h>\endcode - - The ISR is linked to another ISR, specified by the vect parameter. - This is compatible with GCC 4.2 and greater only. - - Use this attribute in the attributes parameter of the ISR macro. -*/ -# define ISR_ALIASOF(target_vector) -#else /* !DOXYGEN */ -# define ISR_BLOCK -# define ISR_NOBLOCK __attribute__((interrupt)) -# define ISR_NAKED __attribute__((naked)) -# define ISR_ALIASOF(v) __attribute__((alias(__STRINGIFY(v)))) -#endif /* DOXYGEN */ - -/* \@} */ - -#endif |