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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [rdi-share/] [params.c] - Blame information for rev 107

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1 106 markom
/*
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 * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
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 *
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 * This software may be freely used, copied, modified, and distributed
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 * provided that the above copyright notice is preserved in all copies of the
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 * software.
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 */
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/* -*-C-*-
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 *
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 * $Revision: 1.1.1.1 $
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 *     $Date: 2001-05-18 11:16:45 $
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 *
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 *
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 *   Project: ANGEL
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 *
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 *     Title: Parameter negotiation utility functions
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 */
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#include "params.h"
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#include "angel_endian.h"
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#include "logging.h"
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/*
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 * Function: Angel_FindParam
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 *  Purpose: find the value of a given parameter from a config.
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 *
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 * see params.h for details
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 */
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bool Angel_FindParam( ADP_Parameter          type,
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                      const ParameterConfig *config,
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                      unsigned int          *value )
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{
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    unsigned int i;
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    for ( i = 0; i < config->num_parameters; ++i )
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       if ( config->param[i].type == type )
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       {
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           *value = config->param[i].value;
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           return TRUE;
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       }
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    return FALSE;
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}
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#if !defined(TARGET) || !defined(MINIMAL_ANGEL) || MINIMAL_ANGEL == 0
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ParameterList *Angel_FindParamList( const ParameterOptions *options,
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                                    ADP_Parameter           type )
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{
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    unsigned int i;
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    for ( i = 0; i < options->num_param_lists; ++i )
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       if ( options->param_list[i].type == type )
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          return &options->param_list[i];
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    return NULL;
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}
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#if defined(TARGET) || defined(TEST_PARAMS)
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/*
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 * Function: Angel_MatchParams
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 *  Purpose: find a configuration from the requested options which is
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 *           the best match from the supported options.
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 *
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 * see params.h for details
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 */
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const ParameterConfig *Angel_MatchParams( const ParameterOptions *requested,
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                                          const ParameterOptions *supported )
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{
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    static Parameter        chosen_params[AP_NUM_PARAMS];
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    static ParameterConfig  chosen_config = {
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        AP_NUM_PARAMS,
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        chosen_params
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    };
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    unsigned int i;
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    ASSERT( requested != NULL, "requested is NULL" );
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    ASSERT( requested != NULL, "requested is NULL" );
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    ASSERT( supported->num_param_lists <= AP_NUM_PARAMS, "supp_num too big" );
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    if ( requested->num_param_lists > supported->num_param_lists )
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    {
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        WARN( "req_num exceeds supp_num" );
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        return NULL;
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    }
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    for ( i = 0; i < requested->num_param_lists; ++i )
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    {
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        bool           match;
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        unsigned int   j;
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        const ParameterList *req_list = &requested->param_list[i];
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        ADP_Parameter        req_type = req_list->type;
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        const ParameterList *sup_list = Angel_FindParamList(
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                                            supported, req_type );
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        if ( sup_list == NULL )
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        {
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#ifdef ASSERTIONS_ENABLED
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            __rt_warning( "option %x not supported\n", req_type );
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#endif
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            return NULL;
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        }
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        for ( j = 0, match = FALSE;
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              (j < req_list->num_options) && !match;
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              ++j
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            )
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        {
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            unsigned int k;
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            for ( k = 0;
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                  (k < sup_list->num_options) && !match;
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                  ++k
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                )
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            {
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                if ( req_list->option[j] == sup_list->option[k] )
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                {
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#ifdef DEBUG
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                    __rt_info( "chose value %d for option %x\n",
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                               req_list->option[j], req_type );
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#endif
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                    match = TRUE;
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                    chosen_config.param[i].type = req_type;
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                    chosen_config.param[i].value = req_list->option[j];
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                }
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            }
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        }
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        if ( !match )
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        {
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#ifdef ASSERTIONS_ENABLED
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            __rt_warning( "no match found for option %x\n", req_type );
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#endif
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            return NULL;
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        }
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    }
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    chosen_config.num_parameters = i;
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    INFO( "match succeeded" );
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    return &chosen_config;
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}
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#endif /* defined(TARGET) || defined(TEST_PARAMS) */
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#if !defined(TARGET) || defined(TEST_PARAMS)
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/*
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 * Function: Angel_StoreParam
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 *  Purpose: store the value of a given parameter to a config.
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 *
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 * see params.h for details
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 */
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bool Angel_StoreParam( ParameterConfig *config,
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                       ADP_Parameter    type,
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                       unsigned int     value )
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{
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    unsigned int i;
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    for ( i = 0; i < config->num_parameters; ++i )
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       if ( config->param[i].type == type )
166
       {
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           config->param[i].value = value;
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           return TRUE;
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       }
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171
    return FALSE;
172
}
173
#endif /* !defined(TARGET) || defined(TEST_PARAMS) */
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#if defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS)
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/*
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 * Function: Angel_BuildParamConfigMessage
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 *  Purpose: write a parameter config to a buffer in ADP format.
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 *
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 * see params.h for details
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 */
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unsigned int Angel_BuildParamConfigMessage( unsigned char         *buffer,
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                                            const ParameterConfig *config )
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{
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    unsigned char *start = buffer;
187
    unsigned int i;
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    PUT32LE( buffer, config->num_parameters );
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    buffer += sizeof( word );
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192
    for ( i = 0; i < config->num_parameters; ++i )
193
    {
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        PUT32LE( buffer, config->param[i].type );
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        buffer += sizeof( word );
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        PUT32LE( buffer, config->param[i].value );
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        buffer += sizeof( word );
198
    }
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200
    return (buffer - start);
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}
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#endif /* defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS) */
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205
#if !defined(TARGET) || defined(TEST_PARAMS)
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/*
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 * Function: Angel_BuildParamOptionsMessage
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 *  Purpose: write a parameter Options to a buffer in ADP format.
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 *
210
 * see params.h for details
211
 */
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unsigned int Angel_BuildParamOptionsMessage( unsigned char          *buffer,
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                                             const ParameterOptions *options )
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{
215
    unsigned char *start = buffer;
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    unsigned int i, j;
217
 
218
    PUT32LE( buffer, options->num_param_lists );
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    buffer += sizeof( word );
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    for ( i = 0; i < options->num_param_lists; ++i )
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    {
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        PUT32LE( buffer, options->param_list[i].type );
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        buffer += sizeof( word );
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        PUT32LE( buffer, options->param_list[i].num_options );
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        buffer += sizeof( word );
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        for ( j = 0; j < options->param_list[i].num_options; ++j )
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        {
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            PUT32LE( buffer, options->param_list[i].option[j] );
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            buffer += sizeof( word );
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        }
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    }
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234
    return (buffer - start);
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}
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#endif /* !defined(TARGET) || defined(TEST_PARAMS) */
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#if !defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS)
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/*
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 * Function: Angel_ReadParamConfigMessage
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 *  Purpose: read a parameter config from a buffer where it is in ADP format.
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 *
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 * see params.h for details
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 */
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bool Angel_ReadParamConfigMessage( const unsigned char *buffer,
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                                   ParameterConfig     *config )
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{
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    unsigned int word;
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    unsigned int i;
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252
    word = GET32LE( buffer );
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    buffer += sizeof( word );
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    if ( word > config->num_parameters )
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    {
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        WARN( "not enough space" );
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        return FALSE;
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    }
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    config->num_parameters = word;
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    for ( i = 0; i < config->num_parameters; ++i )
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    {
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        config->param[i].type = (ADP_Parameter)GET32LE( buffer );
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        buffer += sizeof( word );
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        config->param[i].value = GET32LE( buffer );
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        buffer += sizeof( word );
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    }
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269
    return TRUE;
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}
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#endif /* !defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS) */
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#if defined(TARGET) || defined(TEST_PARAMS)
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/*
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 * Function: Angel_ReadParamOptionsMessage
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 *  Purpose: read a parameter options block from a buffer
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 *             where it is in ADP format.
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 *
280
 * see params.h for details
281
 */
282
bool Angel_ReadParamOptionsMessage( const unsigned char *buffer,
283
                                    ParameterOptions    *options )
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{
285
    unsigned int word;
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    unsigned int i, j;
287
 
288
    word = GET32LE( buffer );
289
    buffer += sizeof( word );
290
    if ( word > options->num_param_lists )
291
    {
292
        WARN( "not enough space" );
293
        return FALSE;
294
    }
295
    options->num_param_lists = word;
296
 
297
    for ( i = 0; i < options->num_param_lists; ++i )
298
    {
299
        ParameterList *list = &options->param_list[i];
300
 
301
        list->type = (ADP_Parameter)GET32LE( buffer );
302
        buffer += sizeof( word );
303
        word = GET32LE( buffer );
304
        buffer += sizeof( word );
305
        if ( word > list->num_options )
306
        {
307
            WARN( "not enough list space" );
308
            return FALSE;
309
        }
310
        list->num_options = word;
311
 
312
        for ( j = 0; j < list->num_options; ++j )
313
        {
314
            list->option[j] = GET32LE( buffer );
315
            buffer += sizeof( word );
316
        }
317
    }
318
 
319
    return TRUE;
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}
321
#endif /* defined(TARGET) || defined(TEST_PARAMS) */
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323
#endif /* !define(TARGET) || !defined(MINIMAL_ANGEL) || MINIMAL_ANGEL == 0 */
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/* EOF params.c */

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