targets/plc_debug.c
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Fri, 18 Aug 2017 20:14:38 +0300
changeset 1768 691083b5682a
parent 1677 db05cb9e0439
child 1800 1711339585ce
permissions -rw-r--r--
clean-up: fix PEP8 E128 continuation line under-indented for visual indent
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/*
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 * DEBUGGER code
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 * 
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 * On "publish", when buffer is free, debugger stores arbitrary variables 
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 * content into, and mark this buffer as filled
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 * 
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 * 
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 * Buffer content is read asynchronously, (from non real time part), 
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 * and then buffer marked free again.
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 *  
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 * 
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 * */
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#include "iec_types_all.h"
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#include "POUS.h"
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/*for memcpy*/
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#include <string.h>
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#include <stdio.h>
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#define BUFFER_SIZE %(buffer_size)d
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/* Atomically accessed variable for buffer state */
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#define BUFFER_FREE 0
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#define BUFFER_BUSY 1
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static long buffer_state = BUFFER_FREE;
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/* The buffer itself */
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char debug_buffer[BUFFER_SIZE];
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/* Buffer's cursor*/
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static char* buffer_cursor = debug_buffer;
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static unsigned int retain_offset = 0;
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/***
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 * Declare programs 
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 **/
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%(programs_declarations)s
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/***
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 * Declare global variables from resources and conf 
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 **/
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%(extern_variables_declarations)s
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typedef const struct {
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    void *ptr;
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    __IEC_types_enum type;
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} dbgvardsc_t;
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static dbgvardsc_t dbgvardsc[] = {
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%(variable_decl_array)s
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};
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typedef void(*__for_each_variable_do_fp)(dbgvardsc_t*);
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void __for_each_variable_do(__for_each_variable_do_fp fp)
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{
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    int i;
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    for(i = 0; i < sizeof(dbgvardsc)/sizeof(dbgvardsc_t); i++){
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        dbgvardsc_t *dsc = &dbgvardsc[i];
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        if(dsc->type != UNKNOWN_ENUM) 
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            (*fp)(dsc);
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    }
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}
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#define __Unpack_case_t(TYPENAME) \
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        case TYPENAME##_ENUM :\
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            *flags = ((__IEC_##TYPENAME##_t *)varp)->flags;\
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            forced_value_p = *real_value_p = &((__IEC_##TYPENAME##_t *)varp)->value;\
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            break;
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#define __Unpack_case_p(TYPENAME)\
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        case TYPENAME##_O_ENUM :\
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            *flags = __IEC_OUTPUT_FLAG;\
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        case TYPENAME##_P_ENUM :\
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            *flags |= ((__IEC_##TYPENAME##_p *)varp)->flags;\
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            *real_value_p = ((__IEC_##TYPENAME##_p *)varp)->value;\
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            forced_value_p = &((__IEC_##TYPENAME##_p *)varp)->fvalue;\
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            break;
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void* UnpackVar(dbgvardsc_t *dsc, void **real_value_p, char *flags)
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{
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    void *varp = dsc->ptr;
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    void *forced_value_p = NULL;
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    *flags = 0;
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    /* find data to copy*/
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    switch(dsc->type){
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        __ANY(__Unpack_case_t)
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        __ANY(__Unpack_case_p)
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    default:
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        break;
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    }
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    if (*flags & __IEC_FORCE_FLAG)
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        return forced_value_p;
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    return *real_value_p;
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}
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void Remind(unsigned int offset, unsigned int count, void * p);
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void RemindIterator(dbgvardsc_t *dsc)
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{
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    void *real_value_p = NULL;
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    char flags = 0;
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    UnpackVar(dsc, &real_value_p, &flags);
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    if(flags & __IEC_RETAIN_FLAG){
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        USINT size = __get_type_enum_size(dsc->type);
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        /* compute next cursor positon*/
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        unsigned int next_retain_offset = retain_offset + size;
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        /* if buffer not full */
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        Remind(retain_offset, size, real_value_p);
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        /* increment cursor according size*/
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        retain_offset = next_retain_offset;
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    }
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}
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extern int CheckRetainBuffer(void);
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extern void InitRetain(void);
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void __init_debug(void)
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{
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    /* init local static vars */
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    buffer_cursor = debug_buffer;
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    retain_offset = 0;
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    buffer_state = BUFFER_FREE;
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    InitRetain();
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    /* Iterate over all variables to fill debug buffer */
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    if(CheckRetainBuffer()){
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    	__for_each_variable_do(RemindIterator);
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    }else{
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    	char mstr[] = "RETAIN memory invalid - defaults used";
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        LogMessage(LOG_WARNING, mstr, sizeof(mstr));
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    }
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    retain_offset = 0;
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}
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extern void InitiateDebugTransfer(void);
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extern void CleanupRetain(void);
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extern unsigned long __tick;
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void __cleanup_debug(void)
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{
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    buffer_cursor = debug_buffer;
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    InitiateDebugTransfer();
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    CleanupRetain();
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}
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void __retrieve_debug(void)
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{
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}
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void Retain(unsigned int offset, unsigned int count, void * p);
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static inline void BufferIterator(dbgvardsc_t *dsc, int do_debug)
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{
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    void *real_value_p = NULL;
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    void *visible_value_p = NULL;
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    char flags = 0;
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    visible_value_p = UnpackVar(dsc, &real_value_p, &flags);
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    if(flags & ( __IEC_DEBUG_FLAG | __IEC_RETAIN_FLAG)){
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        USINT size = __get_type_enum_size(dsc->type);
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        if(flags & __IEC_DEBUG_FLAG){
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            /* copy visible variable to buffer */;
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            if(do_debug){
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                /* compute next cursor positon.
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                   No need to check overflow, as BUFFER_SIZE
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                   is computed large enough */
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		if((dsc->type == STRING_ENUM)   ||
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		   (dsc->type == STRING_P_ENUM) ||
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		   (dsc->type == STRING_O_ENUM)){
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                    /* optimization for strings */
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                    size = ((STRING*)visible_value_p)->len + 1;
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                }
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                char* next_cursor = buffer_cursor + size;
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                /* copy data to the buffer */
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                memcpy(buffer_cursor, visible_value_p, size);
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                /* increment cursor according size*/
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                buffer_cursor = next_cursor;
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            }
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            /* re-force real value of outputs (M and Q)*/
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            if((flags & __IEC_FORCE_FLAG) && (flags & __IEC_OUTPUT_FLAG)){
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                memcpy(real_value_p, visible_value_p, size);
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            }
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        }
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        if(flags & __IEC_RETAIN_FLAG){
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            /* compute next cursor positon*/
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            unsigned int next_retain_offset = retain_offset + size;
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            /* if buffer not full */
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            Retain(retain_offset, size, real_value_p);
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            /* increment cursor according size*/
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            retain_offset = next_retain_offset;
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        }
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    }
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}
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void DebugIterator(dbgvardsc_t *dsc){
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    BufferIterator(dsc, 1);
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}
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void RetainIterator(dbgvardsc_t *dsc){
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    BufferIterator(dsc, 0);
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}
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extern void PLC_GetTime(IEC_TIME*);
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extern int TryEnterDebugSection(void);
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extern long AtomicCompareExchange(long*, long, long);
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extern long long AtomicCompareExchange64(long long* , long long , long long);
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extern void LeaveDebugSection(void);
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extern void ValidateRetainBuffer(void);
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extern void InValidateRetainBuffer(void);
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423
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void __publish_debug(void)
209
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{
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    retain_offset = 0;
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    InValidateRetainBuffer();
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    /* Check there is no running debugger re-configuration */
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    if(TryEnterDebugSection()){
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        /* Lock buffer */
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        long latest_state = AtomicCompareExchange(
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            &buffer_state,
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            BUFFER_FREE,
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   222
            BUFFER_BUSY);
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   223
            
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   224
        /* If buffer was free */
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   225
        if(latest_state == BUFFER_FREE)
209
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        {
239
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            /* Reset buffer cursor */
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            buffer_cursor = debug_buffer;
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   229
            /* Iterate over all variables to fill debug buffer */
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   230
            __for_each_variable_do(DebugIterator);
239
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   231
            
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   232
            /* Leave debug section,
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   233
             * Trigger asynchronous transmission 
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   234
             * (returns immediately) */
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   235
            InitiateDebugTransfer(); /* size */
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   236
        }else{
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   237
            /* when not debugging, do only retain */
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   238
            __for_each_variable_do(RetainIterator);
209
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   239
        }
239
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   240
        LeaveDebugSection();
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   241
    }else{
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   242
        /* when not debugging, do only retain */
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   243
        __for_each_variable_do(RetainIterator);
209
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   244
    }
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9dd978e6537c More robust retain buffer validity management
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   245
    ValidateRetainBuffer();
209
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   246
}
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   248
#define __RegisterDebugVariable_case_t(TYPENAME) \
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   249
        case TYPENAME##_ENUM :\
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   250
            ((__IEC_##TYPENAME##_t *)varp)->flags |= flags;\
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   251
            if(force)\
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   252
             ((__IEC_##TYPENAME##_t *)varp)->value = *((TYPENAME *)force);\
458
dfc6164e4022 Debugger still doesn't work crash less...
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   253
            break;
450
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   254
#define __RegisterDebugVariable_case_p(TYPENAME)\
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   255
        case TYPENAME##_P_ENUM :\
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   256
            ((__IEC_##TYPENAME##_p *)varp)->flags |= flags;\
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   257
            if(force)\
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   258
             ((__IEC_##TYPENAME##_p *)varp)->fvalue = *((TYPENAME *)force);\
511
518c30f2a507 Adding support for hard forcing located output
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   259
            break;\
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   260
        case TYPENAME##_O_ENUM :\
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   261
            ((__IEC_##TYPENAME##_p *)varp)->flags |= flags;\
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bb5d0367bf32 Fix typo in plc_debug.c
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diff changeset
   262
            if(force){\
511
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   263
             ((__IEC_##TYPENAME##_p *)varp)->fvalue = *((TYPENAME *)force);\
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   264
             *(((__IEC_##TYPENAME##_p *)varp)->value) = *((TYPENAME *)force);\
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   265
            }\
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   266
            break;
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   267
void RegisterDebugVariable(int idx, void* force)
209
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{
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   269
    if(idx  < sizeof(dbgvardsc)/sizeof(dbgvardsc_t)){
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   270
        unsigned char flags = force ?
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   271
            __IEC_DEBUG_FLAG | __IEC_FORCE_FLAG :
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   272
            __IEC_DEBUG_FLAG;
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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   273
        dbgvardsc_t *dsc = &dbgvardsc[idx];
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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        void *varp = dsc->ptr;
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Edouard Tisserant
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        switch(dsc->type){
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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   276
            __ANY(__RegisterDebugVariable_case_t)
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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   277
            __ANY(__RegisterDebugVariable_case_p)
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
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   278
        default:
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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   279
            break;
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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   280
        }
450
18583d13f0fa Preliminary accessor support for debug
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    }
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}
18583d13f0fa Preliminary accessor support for debug
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   283
18583d13f0fa Preliminary accessor support for debug
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#define __ResetDebugVariablesIterator_case_t(TYPENAME) \
18583d13f0fa Preliminary accessor support for debug
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        case TYPENAME##_ENUM :\
477
f66a092b6e74 Arbitrary variable forcing
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   286
            ((__IEC_##TYPENAME##_t *)varp)->flags &= ~(__IEC_DEBUG_FLAG|__IEC_FORCE_FLAG);\
458
dfc6164e4022 Debugger still doesn't work crash less...
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            break;
450
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 423
diff changeset
   288
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
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   289
#define __ResetDebugVariablesIterator_case_p(TYPENAME)\
18583d13f0fa Preliminary accessor support for debug
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   290
        case TYPENAME##_P_ENUM :\
582
bb5d0367bf32 Fix typo in plc_debug.c
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parents: 581
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   291
        case TYPENAME##_O_ENUM :\
477
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   292
            ((__IEC_##TYPENAME##_p *)varp)->flags &= ~(__IEC_DEBUG_FLAG|__IEC_FORCE_FLAG);\
458
dfc6164e4022 Debugger still doesn't work crash less...
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   293
            break;
450
18583d13f0fa Preliminary accessor support for debug
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diff changeset
   294
1432
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
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   295
void ResetDebugVariablesIterator(dbgvardsc_t *dsc)
450
18583d13f0fa Preliminary accessor support for debug
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   296
{
18583d13f0fa Preliminary accessor support for debug
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   297
    /* force debug flag to 0*/
1432
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
parents: 1403
diff changeset
   298
    void *varp = dsc->ptr;
8872223a675b Optimized plc_debug.c generated code. Should produce smaller code size. Added statically initialized array for PLC tracable variable description.
Edouard Tisserant
parents: 1403
diff changeset
   299
    switch(dsc->type){
611
b665a9001451 Fix debugger bug after merging matiec repositories
laurent
parents: 605
diff changeset
   300
        __ANY(__ResetDebugVariablesIterator_case_t)
b665a9001451 Fix debugger bug after merging matiec repositories
laurent
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diff changeset
   301
        __ANY(__ResetDebugVariablesIterator_case_p)
452
2d0718a05cc7 Reflect changes in iec type definitions in matiec/lib
edouard
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   302
    default:
2d0718a05cc7 Reflect changes in iec type definitions in matiec/lib
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parents: 450
diff changeset
   303
        break;
209
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
etisserant
parents:
diff changeset
   304
    }
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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parents:
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   305
}
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
etisserant
parents:
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   306
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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diff changeset
   307
void ResetDebugVariables(void)
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diff changeset
   308
{
450
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 423
diff changeset
   309
    __for_each_variable_do(ResetDebugVariablesIterator);
209
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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diff changeset
   310
}
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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diff changeset
   311
423
4d7ac355701d Fix some warnings during compilation
greg
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diff changeset
   312
void FreeDebugData(void)
209
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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diff changeset
   313
{
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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diff changeset
   314
    /* atomically mark buffer as free */
1403
dd6d40094782 Fixed unused variable in plc_debug.c
Edouard Tisserant
parents: 1074
diff changeset
   315
    AtomicCompareExchange(
209
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
etisserant
parents:
diff changeset
   316
        &buffer_state,
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
etisserant
parents:
diff changeset
   317
        BUFFER_BUSY,
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
etisserant
parents:
diff changeset
   318
        BUFFER_FREE);
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
etisserant
parents:
diff changeset
   319
}
452
2d0718a05cc7 Reflect changes in iec type definitions in matiec/lib
edouard
parents: 450
diff changeset
   320
int WaitDebugData(unsigned long *tick);
450
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 423
diff changeset
   321
/* Wait until debug data ready and return pointer to it */
18583d13f0fa Preliminary accessor support for debug
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 423
diff changeset
   322
int GetDebugData(unsigned long *tick, unsigned long *size, void **buffer){
504
688e84df3408 Fixed debug again, did some code tidying
edouard
parents: 502
diff changeset
   323
    int wait_error = WaitDebugData(tick);
688e84df3408 Fixed debug again, did some code tidying
edouard
parents: 502
diff changeset
   324
    if(!wait_error){
502
5343ae43f6d0 LPC connector - one step further
edouard
parents: 491
diff changeset
   325
        *size = buffer_cursor - debug_buffer;
5343ae43f6d0 LPC connector - one step further
edouard
parents: 491
diff changeset
   326
        *buffer = debug_buffer;
5343ae43f6d0 LPC connector - one step further
edouard
parents: 491
diff changeset
   327
    }
504
688e84df3408 Fixed debug again, did some code tidying
edouard
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diff changeset
   328
    return wait_error;
688e84df3408 Fixed debug again, did some code tidying
edouard
parents: 502
diff changeset
   329
}
688e84df3408 Fixed debug again, did some code tidying
edouard
parents: 502
diff changeset
   330