mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-08-16 22:28:59 +00:00
522 lines
16 KiB
C
522 lines
16 KiB
C
/** @file hal/micro/cortexm3/compiler/gnu.h
|
|
* See @ref gnu for detailed documentation.
|
|
*
|
|
*/
|
|
|
|
/** @addtogroup gnu
|
|
* @brief Compiler and Platform specific definitions and typedefs for the
|
|
* GNU C ARM compiler.
|
|
*
|
|
* @note gnu.h should be included first in all source files by setting the
|
|
* preprocessor macro PLATFORM_HEADER to point to it. gnu.h automatically
|
|
* includes platform-common.h.
|
|
*
|
|
* See gnu.h and platform-common.h for source code.
|
|
*@{
|
|
*/
|
|
|
|
#ifndef __GNU_H__
|
|
#define __GNU_H__
|
|
|
|
#ifndef __GNUC__
|
|
#error Improper PLATFORM_HEADER
|
|
#endif
|
|
|
|
#define GCC_VERSION (__GNUC__ * 10000 \
|
|
+ __GNUC_MINOR__ * 100 \
|
|
+ __GNUC_PATCHLEVEL__)
|
|
|
|
#if GCC_VERSION < 40302
|
|
#error Only GNU C version later than 4.3.2 are supported
|
|
#endif
|
|
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
//#include <intrinsics.h>
|
|
#include <stdarg.h>
|
|
#if defined (CORTEXM3_STM32W108)
|
|
#include "micro/cortexm3/stm32w108/regs.h"
|
|
#else
|
|
#error Unknown CORTEXM3 micro
|
|
#endif
|
|
//Provide a default NVIC configuration file. The build process can
|
|
//override this if it needs to.
|
|
#ifndef NVIC_CONFIG
|
|
#define NVIC_CONFIG "hal/micro/cortexm3/nvic-config.h"
|
|
#endif
|
|
//[[
|
|
#ifdef EMU_TEST
|
|
#ifdef I_AM_AN_EMULATOR
|
|
// This register is defined for both the chip and the emulator with
|
|
// with distinct reset values. Need to undefine to avoid preprocessor
|
|
// collision.
|
|
#undef DATA_EMU_REGS_BASE
|
|
#undef DATA_EMU_REGS_END
|
|
#undef DATA_EMU_REGS_SIZE
|
|
#undef I_AM_AN_EMULATOR
|
|
#undef I_AM_AN_EMULATOR_REG
|
|
#undef I_AM_AN_EMULATOR_ADDR
|
|
#undef I_AM_AN_EMULATOR_RESET
|
|
#undef I_AM_AN_EMULATOR_I_AM_AN_EMULATOR
|
|
#undef I_AM_AN_EMULATOR_I_AM_AN_EMULATOR_MASK
|
|
#undef I_AM_AN_EMULATOR_I_AM_AN_EMULATOR_BIT
|
|
#undef I_AM_AN_EMULATOR_I_AM_AN_EMULATOR_BITS
|
|
#endif//I_AM_AN_EMULATOR
|
|
#error MICRO currently not supported for emulator builds.
|
|
#endif//EMU_TEST
|
|
//]]
|
|
|
|
// suppress warnings about unknown pragmas
|
|
// (as they may be pragmas known to other platforms)
|
|
//#pragma diag_suppress = pe161
|
|
|
|
#endif // DOXYGEN_SHOULD_SKIP_THIS
|
|
|
|
// Define that the minimal hal is being used.
|
|
#define MINIMAL_HAL
|
|
|
|
|
|
/** \name Master Variable Types
|
|
* These are a set of typedefs to make the size of all variable declarations
|
|
* explicitly known.
|
|
*/
|
|
//@{
|
|
/**
|
|
* @brief A typedef to make the size of the variable explicitly known.
|
|
*/
|
|
typedef unsigned char boolean;
|
|
typedef unsigned char int8u;
|
|
typedef signed char int8s;
|
|
typedef unsigned short int16u;
|
|
typedef signed short int16s;
|
|
typedef unsigned int int32u;
|
|
typedef signed int int32s;
|
|
typedef unsigned int PointerType;
|
|
//@} \\END MASTER VARIABLE TYPES
|
|
|
|
/**
|
|
* @brief Use the Master Program Memory Declarations from platform-common.h
|
|
*/
|
|
#define _HAL_USE_COMMON_PGM_
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/** \name Miscellaneous Macros
|
|
*/
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//@{
|
|
|
|
/**
|
|
* @brief A convenient method for code to know what endiannes processor
|
|
* it is running on. For the Cortex-M3, we are little endian.
|
|
*/
|
|
#define BIGENDIAN_CPU FALSE
|
|
|
|
|
|
/**
|
|
* @brief A friendlier name for the compiler's intrinsic for not
|
|
* stripping.
|
|
*/
|
|
#define NO_STRIPPING /* __root ??? */
|
|
#define __no_init /*__attribute__((section (".noinit")))*/
|
|
|
|
/**
|
|
* @brief A friendlier name for the compiler's intrinsic for eeprom
|
|
* reference.
|
|
*/
|
|
#define EEPROM errorerror
|
|
|
|
|
|
#ifndef __SOURCEFILE__
|
|
/**
|
|
* @brief The __SOURCEFILE__ macro is used by asserts to list the
|
|
* filename if it isn't otherwise defined, set it to the compiler intrinsic
|
|
* which specifies the whole filename and path of the sourcefile
|
|
*/
|
|
#define __SOURCEFILE__ __FILE__
|
|
#endif
|
|
|
|
|
|
//#include <assert.h>
|
|
#undef assert
|
|
#define assert(condition) do { if (! (condition)) {while (1); }} while(0)
|
|
#if 0
|
|
do { if (! (condition)) { \
|
|
printf ("Assert failed %s %d\r\n",__SOURCEFILE__, __LINE__); }} while(0)
|
|
#endif
|
|
|
|
#ifndef BOOTLOADER
|
|
#undef __delay_cycles
|
|
/**
|
|
* @brief __delay_cycles() is an intrinsic IAR call; however, we
|
|
* have explicity disallowed it since it is too specific to the system clock.
|
|
* \note Please use halCommonDelayMicroseconds() instead, because it correctly
|
|
* accounts for various system clock speeds.
|
|
*/
|
|
#define __delay_cycles(x) please_use_halCommonDelayMicroseconds_instead_of_delay_cycles
|
|
#endif
|
|
|
|
/**
|
|
* @brief Set debug level based on whether or DEBUG is defined.
|
|
* basic debugging support is included if DEBUG is not defined.
|
|
*/
|
|
#ifndef DEBUG_LEVEL
|
|
#ifdef DEBUG
|
|
#define DEBUG_LEVEL FULL_DEBUG
|
|
#else
|
|
#define DEBUG_LEVEL BASIC_DEBUG
|
|
#endif
|
|
#endif
|
|
|
|
/**
|
|
* @brief Macro to reset the watchdog timer. Note: be very very
|
|
* careful when using this as you can easily get into an infinite loop if you
|
|
* are not careful.
|
|
*/
|
|
void halInternalResetWatchDog(void);
|
|
#define halResetWatchdog() halInternalResetWatchDog()
|
|
|
|
|
|
/**
|
|
* @brief Define __attribute__ to nothing since it isn't handled by IAR.
|
|
*/
|
|
|
|
|
|
/**
|
|
* @brief Declare a variable as unused to avoid a warning. Has no effect
|
|
* in IAR builds
|
|
*/
|
|
#define UNUSED
|
|
|
|
/**
|
|
* @brief Some platforms need to cast enum values that have the high bit set.
|
|
*/
|
|
#define SIGNED_ENUM
|
|
|
|
|
|
/**
|
|
* @brief Define the magic value that is interpreted by IAR C-SPY's Stack View.
|
|
*/
|
|
#define STACK_FILL_VALUE 0xCDCDCDCD
|
|
|
|
/**
|
|
* @brief Define a generic RAM function identifier to a compiler specific one.
|
|
*/
|
|
#ifdef RAMEXE
|
|
//If the whole build is running out of RAM, as chosen by the RAMEXE build
|
|
//define, then define RAMFUNC to nothing since it's not needed.
|
|
#define RAMFUNC
|
|
#else //RAMEXE
|
|
#define RAMFUNC __ramfunc
|
|
#endif //RAMEXE
|
|
|
|
/**
|
|
* @brief Define a generic no operation identifier to a compiler specific one.
|
|
*/
|
|
#define NO_OPERATION() __no_operation()
|
|
|
|
/**
|
|
* @brief A convenience macro that makes it easy to change the field of a
|
|
* register to any value.
|
|
*/
|
|
#define SET_REG_FIELD(reg, field, value) \
|
|
do{ \
|
|
reg = ((reg & (~field##_MASK)) | (value << field##_BIT)); \
|
|
}while(0)
|
|
|
|
/**
|
|
* @brief Stub for code not running in simulation.
|
|
*/
|
|
#define simulatedTimePasses()
|
|
/**
|
|
* @brief Stub for code not running in simulation.
|
|
*/
|
|
#define simulatedTimePassesMs(x)
|
|
/**
|
|
* @brief Stub for code not running in simulation.
|
|
*/
|
|
#define simulatedSerialTimePasses()
|
|
|
|
|
|
/**
|
|
* @brief Use the Divide and Modulus Operations from platform-common.h
|
|
*/
|
|
#define _HAL_USE_COMMON_DIVMOD_
|
|
|
|
|
|
/**
|
|
* @brief Provide a portable way to specify the segment where a variable
|
|
* lives.
|
|
*/
|
|
#define VAR_AT_SEGMENT(__variableDeclaration, __segmentName) \
|
|
__variableDeclaration __attribute__ ((section (__segmentName)))
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//@} // end of Miscellaneous Macros
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
/** @name Portable segment names
|
|
*@{
|
|
*/
|
|
/**
|
|
* @brief Portable segment names
|
|
*/
|
|
#define __NO_INIT__ ".noinit"
|
|
#define __INTVEC__ ".intvec"
|
|
#define __CSTACK__ "CSTACK"
|
|
#define __DATA_INIT__ ".data_init"
|
|
#define __DATA__ ".data"
|
|
#define __BSS__ ".bss"
|
|
#define __CONST__ ".rodata"
|
|
#define __TEXT__ ".text"
|
|
#define __TEXTRW_INIT__ ".textrw_init"
|
|
#define __TEXTRW__ ".textrw"
|
|
#define __FAT__ "FAT" // Fixed address table
|
|
#define __NVM__ "NVM" //Non-Volatile Memory data storage
|
|
|
|
//=============================================================================
|
|
// The '#pragma segment=' declaration must be used before attempting to access
|
|
// the segments so the compiler properly handles the __segment_*() functions.
|
|
//
|
|
// The segment names used here are the default segment names used by IAR. Refer
|
|
// to the IAR Compiler Reference Guide for a proper description of these
|
|
// segments.
|
|
//=============================================================================
|
|
#if 0
|
|
#pragma segment=__NO_INIT__
|
|
#pragma segment=__INTVEC__
|
|
#pragma segment=__CSTACK__
|
|
#pragma segment=__DATA_INIT__
|
|
#pragma segment=__DATA__
|
|
#pragma segment=__BSS__
|
|
#pragma segment=__CONST__
|
|
#pragma segment=__TEXT__
|
|
#pragma segment=__TEXTRW_INIT__
|
|
#pragma segment=__TEXTRW__
|
|
#pragma segment=__FAT__
|
|
#pragma segment=__NVM__
|
|
#endif
|
|
/**@} */
|
|
|
|
//A utility function for inserting barrier instructions. These
|
|
//instructions should be used whenever the MPU is enabled or disabled so
|
|
//that all memory/instruction accesses can complete before the MPU changes
|
|
//state.
|
|
void _executeBarrierInstructions(void);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/** \name Global Interrupt Manipulation Macros
|
|
*
|
|
* \b Note: The special purpose BASEPRI register is used to enable and disable
|
|
* interrupts while permitting faults.
|
|
* When BASEPRI is set to 1 no interrupts can trigger. The configurable faults
|
|
* (usage, memory management, and bus faults) can trigger if enabled as well as
|
|
* the always-enabled exceptions (reset, NMI and hard fault).
|
|
* When BASEPRI is set to 0, it is disabled, so any interrupt can triggger if
|
|
* its priority is higher than the current priority.
|
|
*/
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//@{
|
|
|
|
#define ATOMIC_LITE(blah) ATOMIC(blah)
|
|
#define DECLARE_INTERRUPT_STATE_LITE DECLARE_INTERRUPT_STATE
|
|
#define DISABLE_INTERRUPTS_LITE() DISABLE_INTERRUPTS()
|
|
#define RESTORE_INTERRUPTS_LITE() RESTORE_INTERRUPTS()
|
|
|
|
#ifdef BOOTLOADER
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
// The bootloader does not use interrupts
|
|
#define DECLARE_INTERRUPT_STATE
|
|
#define DISABLE_INTERRUPTS() do { } while(0)
|
|
#define RESTORE_INTERRUPTS() do { } while(0)
|
|
#define INTERRUPTS_ON() do { } while(0)
|
|
#define INTERRUPTS_OFF() do { } while(0)
|
|
#define INTERRUPTS_ARE_OFF() (FALSE)
|
|
#define ATOMIC(blah) { blah }
|
|
#define HANDLE_PENDING_INTERRUPTS() do { } while(0)
|
|
#define SET_BASE_PRIORITY_LEVEL(basepri) do { } while(0)
|
|
#endif // DOXYGEN_SHOULD_SKIP_THIS
|
|
#else // BOOTLOADER
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
/**
|
|
* @brief This macro should be called in the local variable
|
|
* declarations section of any function which calls DISABLE_INTERRUPTS()
|
|
* or RESTORE_INTERRUPTS().
|
|
*/
|
|
#define DECLARE_INTERRUPT_STATE int8u _emIsrState
|
|
|
|
// Prototypes for the BASEPRI and PRIMASK access functions. They are very
|
|
// basic and instantiated in assembly code in the file spmr.s37 (since
|
|
// there are no C functions that cause the compiler to emit code to access
|
|
// the BASEPRI/PRIMASK). This will inhibit the core from taking interrupts
|
|
// with a priority equal to or less than the BASEPRI value.
|
|
// Note that the priority values used by these functions are 5 bits and
|
|
// right-aligned
|
|
extern int8u _readBasePri(void);
|
|
extern void _writeBasePri(int8u priority);
|
|
|
|
// Prototypes for BASEPRI functions used to disable and enable interrupts
|
|
// while still allowing enabled faults to trigger.
|
|
extern void _enableBasePri(void);
|
|
extern int8u _disableBasePri(void);
|
|
extern boolean _basePriIsDisabled(void);
|
|
|
|
// Prototypes for setting and clearing PRIMASK for global interrupt
|
|
// enable/disable.
|
|
extern void _setPriMask(void);
|
|
extern void _clearPriMask(void);
|
|
#endif // DOXYGEN_SHOULD_SKIP_THIS
|
|
|
|
//The core Global Interrupt Manipulation Macros start here.
|
|
|
|
/**
|
|
* @brief Disable interrupts, saving the previous state so it can be
|
|
* later restored with RESTORE_INTERRUPTS().
|
|
* \note Do not fail to call RESTORE_INTERRUPTS().
|
|
* \note It is safe to nest this call.
|
|
*/
|
|
#define DISABLE_INTERRUPTS() \
|
|
do { \
|
|
_emIsrState = _disableBasePri(); \
|
|
} while(0)
|
|
|
|
|
|
/**
|
|
* @brief Restore the global interrupt state previously saved by
|
|
* DISABLE_INTERRUPTS()
|
|
* \note Do not call without having first called DISABLE_INTERRUPTS()
|
|
* to have saved the state.
|
|
* \note It is safe to nest this call.
|
|
*/
|
|
#define RESTORE_INTERRUPTS() \
|
|
do { \
|
|
_writeBasePri(_emIsrState); \
|
|
} while(0)
|
|
|
|
|
|
/**
|
|
* @brief Enable global interrupts without regard to the current or
|
|
* previous state.
|
|
*/
|
|
#define INTERRUPTS_ON() \
|
|
do { \
|
|
_enableBasePri(); \
|
|
} while(0)
|
|
|
|
|
|
/**
|
|
* @brief Disable global interrupts without regard to the current or
|
|
* previous state.
|
|
*/
|
|
#define INTERRUPTS_OFF() \
|
|
do { \
|
|
(void)_disableBasePri(); \
|
|
} while(0)
|
|
|
|
|
|
/**
|
|
* @returns TRUE if global interrupts are disabled.
|
|
*/
|
|
#define INTERRUPTS_ARE_OFF() ( _basePriIsDisabled() )
|
|
|
|
/**
|
|
* @returns TRUE if global interrupt flag was enabled when
|
|
* ::DISABLE_INTERRUPTS() was called.
|
|
*/
|
|
#define INTERRUPTS_WERE_ON() (_emIsrState == 0)
|
|
|
|
/**
|
|
* @brief A block of code may be made atomic by wrapping it with this
|
|
* macro. Something which is atomic cannot be interrupted by interrupts.
|
|
*/
|
|
#define ATOMIC(blah) \
|
|
{ \
|
|
DECLARE_INTERRUPT_STATE; \
|
|
DISABLE_INTERRUPTS(); \
|
|
{ blah } \
|
|
RESTORE_INTERRUPTS(); \
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Allows any pending interrupts to be executed. Usually this
|
|
* would be called at a safe point while interrupts are disabled (such as
|
|
* within an ISR).
|
|
*
|
|
* Takes no action if interrupts are already enabled.
|
|
*/
|
|
#define HANDLE_PENDING_INTERRUPTS() \
|
|
do { \
|
|
if (INTERRUPTS_ARE_OFF()) { \
|
|
INTERRUPTS_ON(); \
|
|
INTERRUPTS_OFF(); \
|
|
} \
|
|
} while (0)
|
|
|
|
|
|
/**
|
|
* @brief Sets the base priority mask (BASEPRI) to the value passed,
|
|
* bit shifted up by PRIGROUP_POSITION+1. This will inhibit the core from
|
|
* taking all interrupts with a preemptive priority equal to or less than
|
|
* the BASEPRI mask. This macro is dependent on the value of
|
|
* PRIGROUP_POSITION in nvic-config.h. Note that the value 0 disables the
|
|
* the base priority mask.
|
|
*
|
|
* Refer to the "PRIGROUP" table in nvic-config.h to know the valid values
|
|
* for this macro depending on the value of PRIGROUP_POSITION. With respect
|
|
* to the table, this macro can only take the preemptive priority group
|
|
* numbers denoted by the parenthesis.
|
|
*/
|
|
#define SET_BASE_PRIORITY_LEVEL(basepri) \
|
|
do { \
|
|
_writeBasePri(basepri); \
|
|
} while(0)
|
|
|
|
#endif // BOOTLOADER
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//@} // end of Global Interrupt Manipulation Macros
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
/**
|
|
* @brief Use the C Standard Library Memory Utilities from platform-common.h
|
|
*/
|
|
#define _HAL_USE_COMMON_MEMUTILS_
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/** \name External Declarations
|
|
* These are routines that are defined in certain header files that we don't
|
|
* want to include, e.g. stdlib.h
|
|
*/
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//@{
|
|
|
|
/**
|
|
* @brief Returns the absolute value of I (also called the magnitude of I).
|
|
* That is, if I is negative, the result is the opposite of I, but if I is
|
|
* nonnegative the result is I.
|
|
*
|
|
* @param I An integer.
|
|
*
|
|
* @return A nonnegative integer.
|
|
*/
|
|
int abs(int I);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//@} // end of External Declarations
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
/**
|
|
* @brief Include platform-common.h last to pick up defaults and common definitions.
|
|
*/
|
|
#define PLATCOMMONOKTOINCLUDE
|
|
#include "hal/micro/generic/compiler/platform-common.h"
|
|
#undef PLATCOMMONOKTOINCLUDE
|
|
|
|
#endif // __GNU_H__
|
|
|
|
/** @} END addtogroup */
|
|
|