targets/plc_debug.c
author Edouard Tisserant
Wed, 25 Feb 2015 13:59:01 +0100
changeset 1451 94e620cbd9de
parent 1432 8872223a675b
child 1457 ff7cfce737ca
permissions -rw-r--r--
Added Ronan Bignaux (genesis) patch to use wxversion. Fixed side effects with sys.path. Other cosmetic fixes about path included.
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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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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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    /* 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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    retain_offset = 0;
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}
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extern void InitiateDebugTransfer(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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}
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void __retrieve_debug(void)
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   138
{
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}
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   141
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void Retain(unsigned int offset, unsigned int count, void * p);
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   143
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inline void BufferIterator(dbgvardsc_t *dsc, int do_debug)
605
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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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   149
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    visible_value_p = UnpackVar(dsc, &real_value_p, &flags);
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   151
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   152
    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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   156
            if(do_debug){
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   157
                /* compute next cursor positon.
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   158
                   No need to check overflow, as BUFFER_SIZE
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   159
                   is computed large enough */
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   160
                if(dsc->type == STRING_ENUM){
1074
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   161
                    /* optimization for strings */
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                    size = ((STRING*)visible_value_p)->len + 1;
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   163
                }
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                char* next_cursor = buffer_cursor + size;
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   165
                /* copy data to the buffer */
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   166
                memcpy(buffer_cursor, visible_value_p, size);
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   167
                /* increment cursor according size*/
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                buffer_cursor = next_cursor;
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   169
            }
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   170
            /* re-force real value of outputs (M and Q)*/
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   171
            if((flags & __IEC_FORCE_FLAG) && (flags & __IEC_OUTPUT_FLAG)){
605
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   172
                memcpy(real_value_p, visible_value_p, size);
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   173
            }
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   174
        }
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        if(flags & __IEC_RETAIN_FLAG){
605
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   176
            /* compute next cursor positon*/
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   177
            unsigned int next_retain_offset = retain_offset + size;
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   178
            /* 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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   182
        }
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    }
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}
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   185
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void DebugIterator(dbgvardsc_t *dsc){
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    BufferIterator(dsc, 1);
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   188
}
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   189
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void RetainIterator(dbgvardsc_t *dsc){
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   191
    BufferIterator(dsc, 0);
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}
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   193
969
1950fe687dde Fix warning with LogMessage function
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   194
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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ab487d32ce9a Made logging compatible with windows API
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   197
extern long long AtomicCompareExchange64(long long* , long long , long long);
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   198
extern void LeaveDebugSection(void);
580
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   199
extern void ValidateRetainBuffer(void);
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extern void InValidateRetainBuffer(void);
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   201
423
4d7ac355701d Fix some warnings during compilation
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   202
void __publish_debug(void)
209
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{
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   204
    retain_offset = 0;
580
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   205
    InValidateRetainBuffer();
239
112b4bc523b3 Fixed bad IPC choice for debugger/PLC/control thread collaboration
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   206
    /* Check there is no running debugger re-configuration */
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   207
    if(TryEnterDebugSection()){
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   208
        /* Lock buffer */
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   209
        long latest_state = AtomicCompareExchange(
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   210
            &buffer_state,
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   211
            BUFFER_FREE,
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   212
            BUFFER_BUSY);
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diff changeset
   213
            
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   214
        /* If buffer was free */
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   215
        if(latest_state == BUFFER_FREE)
209
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   216
        {
239
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   217
            /* Reset buffer cursor */
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   218
            buffer_cursor = debug_buffer;
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diff changeset
   219
            /* Iterate over all variables to fill debug buffer */
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   220
            __for_each_variable_do(DebugIterator);
239
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diff changeset
   221
            
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diff changeset
   222
            /* Leave debug section,
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   223
             * Trigger asynchronous transmission 
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   224
             * (returns immediately) */
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   225
            InitiateDebugTransfer(); /* size */
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57605e8e89f0 Also retain when debugger is stalled
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diff changeset
   226
        }else{
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diff changeset
   227
            /* when not debugging, do only retain */
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diff changeset
   228
            __for_each_variable_do(RetainIterator);
209
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diff changeset
   229
        }
239
112b4bc523b3 Fixed bad IPC choice for debugger/PLC/control thread collaboration
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diff changeset
   230
        LeaveDebugSection();
483
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diff changeset
   231
    }else{
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   232
        /* when not debugging, do only retain */
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   233
        __for_each_variable_do(RetainIterator);
209
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diff changeset
   234
    }
580
9dd978e6537c More robust retain buffer validity management
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diff changeset
   235
    ValidateRetainBuffer();
209
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diff changeset
   236
}
08dc3d064cb5 Moved template C code to targets dir. Cleaned up some forgotten print.
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diff changeset
   237
450
18583d13f0fa Preliminary accessor support for debug
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diff changeset
   238
#define __RegisterDebugVariable_case_t(TYPENAME) \
18583d13f0fa Preliminary accessor support for debug
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diff changeset
   239
        case TYPENAME##_ENUM :\
477
f66a092b6e74 Arbitrary variable forcing
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diff changeset
   240
            ((__IEC_##TYPENAME##_t *)varp)->flags |= flags;\
f66a092b6e74 Arbitrary variable forcing
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diff changeset
   241
            if(force)\
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diff changeset
   242
             ((__IEC_##TYPENAME##_t *)varp)->value = *((TYPENAME *)force);\
458
dfc6164e4022 Debugger still doesn't work crash less...
Edouard TISSERANT <edouard.tisserant@gmail.com>
parents: 452
diff changeset
   243
            break;
450
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diff changeset
   244
#define __RegisterDebugVariable_case_p(TYPENAME)\
18583d13f0fa Preliminary accessor support for debug
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diff changeset
   245
        case TYPENAME##_P_ENUM :\
477
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diff changeset
   246
            ((__IEC_##TYPENAME##_p *)varp)->flags |= flags;\
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diff changeset
   247
            if(force)\
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diff changeset
   248
             ((__IEC_##TYPENAME##_p *)varp)->fvalue = *((TYPENAME *)force);\
511
518c30f2a507 Adding support for hard forcing located output
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diff changeset
   249
            break;\
518c30f2a507 Adding support for hard forcing located output
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diff changeset
   250
        case TYPENAME##_O_ENUM :\
518c30f2a507 Adding support for hard forcing located output
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diff changeset
   251
            ((__IEC_##TYPENAME##_p *)varp)->flags |= flags;\
582
bb5d0367bf32 Fix typo in plc_debug.c
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parents: 581
diff changeset
   252
            if(force){\
511
518c30f2a507 Adding support for hard forcing located output
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diff changeset
   253
             ((__IEC_##TYPENAME##_p *)varp)->fvalue = *((TYPENAME *)force);\
518c30f2a507 Adding support for hard forcing located output
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diff changeset
   254
             *(((__IEC_##TYPENAME##_p *)varp)->value) = *((TYPENAME *)force);\
582
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diff changeset
   255
            }\
477
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diff changeset
   256
            break;
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diff changeset
   257
void RegisterDebugVariable(int idx, void* force)
209
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   258
{
1432
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diff changeset
   259
    if(idx  < sizeof(dbgvardsc)/sizeof(dbgvardsc_t)){
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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   260
        unsigned char flags = force ?
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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diff changeset
   261
            __IEC_DEBUG_FLAG | __IEC_FORCE_FLAG :
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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diff changeset
   262
            __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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diff changeset
   263
        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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diff changeset
   264
        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
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   265
        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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   266
            __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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   267
            __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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diff changeset
   268
        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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diff changeset
   269
            break;
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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diff changeset
   270
        }
450
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diff changeset
   271
    }
18583d13f0fa Preliminary accessor support for debug
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}
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#define __ResetDebugVariablesIterator_case_t(TYPENAME) \
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        case TYPENAME##_ENUM :\
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            ((__IEC_##TYPENAME##_t *)varp)->flags &= ~(__IEC_DEBUG_FLAG|__IEC_FORCE_FLAG);\
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            break;
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#define __ResetDebugVariablesIterator_case_p(TYPENAME)\
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        case TYPENAME##_P_ENUM :\
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        case TYPENAME##_O_ENUM :\
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            ((__IEC_##TYPENAME##_p *)varp)->flags &= ~(__IEC_DEBUG_FLAG|__IEC_FORCE_FLAG);\
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            break;
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void ResetDebugVariablesIterator(dbgvardsc_t *dsc)
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{
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    /* force debug flag to 0*/
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    void *varp = dsc->ptr;
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    switch(dsc->type){
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        __ANY(__ResetDebugVariablesIterator_case_t)
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        __ANY(__ResetDebugVariablesIterator_case_p)
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    default:
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        break;
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    }
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}
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void ResetDebugVariables(void)
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{
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    __for_each_variable_do(ResetDebugVariablesIterator);
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}
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void FreeDebugData(void)
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{
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    /* atomically mark buffer as free */
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    AtomicCompareExchange(
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        &buffer_state,
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        BUFFER_BUSY,
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        BUFFER_FREE);
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}
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int WaitDebugData(unsigned long *tick);
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/* Wait until debug data ready and return pointer to it */
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int GetDebugData(unsigned long *tick, unsigned long *size, void **buffer){
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    int wait_error = WaitDebugData(tick);
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    if(!wait_error){
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        *size = buffer_cursor - debug_buffer;
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        *buffer = debug_buffer;
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    }
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    return wait_error;
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}
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