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/*
 * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
 *
 * This software may be freely used, copied, modified, and distributed
 * provided that the above copyright notice is preserved in all copies of the
 * software.
 */
 
/* -*-C-*-
 *
 * $Revision: 1.2 $
 *     $Date: 2003-08-15 01:06:10 $
 *
 *
 *   Project: ANGEL
 *
 *     Title: Parameter negotiation utility functions
 */
 
#include "params.h"
 
#include "angel_endian.h"
#include "logging.h"
 
 
/*
 * Function: Angel_FindParam
 *  Purpose: find the value of a given parameter from a config.
 *
 * see params.h for details
 */
bool Angel_FindParam( ADP_Parameter          type,
                      const ParameterConfig *config,
                      unsigned int          *value )
{
    unsigned int i;
 
    for ( i = 0; i < config->num_parameters; ++i )
       if ( config->param[i].type == type )
       {
           *value = config->param[i].value;
           return TRUE;
       }
 
    return FALSE;
}
 
 
#if !defined(TARGET) || !defined(MINIMAL_ANGEL) || MINIMAL_ANGEL == 0
 
ParameterList *Angel_FindParamList( const ParameterOptions *options,
                                    ADP_Parameter           type )
{
    unsigned int i;
 
    for ( i = 0; i < options->num_param_lists; ++i )
       if ( options->param_list[i].type == type )
          return &options->param_list[i];
 
    return NULL;
}
 
 
#if defined(TARGET) || defined(TEST_PARAMS)
/*
 * Function: Angel_MatchParams
 *  Purpose: find a configuration from the requested options which is
 *           the best match from the supported options.
 *
 * see params.h for details
 */
const ParameterConfig *Angel_MatchParams( const ParameterOptions *requested,
                                          const ParameterOptions *supported )
{
    static Parameter        chosen_params[AP_NUM_PARAMS];
    static ParameterConfig  chosen_config = {
        AP_NUM_PARAMS,
        chosen_params
    };
    unsigned int i;
 
    ASSERT( requested != NULL, "requested is NULL" );
    ASSERT( requested != NULL, "requested is NULL" );
    ASSERT( supported->num_param_lists <= AP_NUM_PARAMS, "supp_num too big" );
 
    if ( requested->num_param_lists > supported->num_param_lists )
    {
        WARN( "req_num exceeds supp_num" );
        return NULL;
    }
 
    for ( i = 0; i < requested->num_param_lists; ++i )
    {
        bool           match;
        unsigned int   j;
 
        const ParameterList *req_list = &requested->param_list[i];
        ADP_Parameter        req_type = req_list->type;
        const ParameterList *sup_list = Angel_FindParamList(
                                            supported, req_type );
 
        if ( sup_list == NULL )
        {
#ifdef ASSERTIONS_ENABLED
            __rt_warning( "option %x not supported\n", req_type );
#endif
            return NULL;
        }
 
        for ( j = 0, match = FALSE;
              (j < req_list->num_options) && !match;
              ++j
            )
        {
            unsigned int k;
 
            for ( k = 0;
                  (k < sup_list->num_options) && !match;
                  ++k
                )
            {
                if ( req_list->option[j] == sup_list->option[k] )
                {
#ifdef DEBUG
                    __rt_info( "chose value %d for option %x\n",
                               req_list->option[j], req_type );
#endif
                    match = TRUE;
                    chosen_config.param[i].type = req_type;
                    chosen_config.param[i].value = req_list->option[j];
                }
            }
        }
 
        if ( !match )
        {
#ifdef ASSERTIONS_ENABLED
            __rt_warning( "no match found for option %x\n", req_type );
#endif
            return NULL;
        }
    }
 
    chosen_config.num_parameters = i;
    INFO( "match succeeded" );
    return &chosen_config;
}
#endif /* defined(TARGET) || defined(TEST_PARAMS) */
 
 
#if !defined(TARGET) || defined(TEST_PARAMS)
/*
 * Function: Angel_StoreParam
 *  Purpose: store the value of a given parameter to a config.
 *
 * see params.h for details
 */
bool Angel_StoreParam( ParameterConfig *config,
                       ADP_Parameter    type,
                       unsigned int     value )
{
    unsigned int i;
 
    for ( i = 0; i < config->num_parameters; ++i )
       if ( config->param[i].type == type )
       {
           config->param[i].value = value;
           return TRUE;
       }
 
    return FALSE;
}
#endif /* !defined(TARGET) || defined(TEST_PARAMS) */
 
 
#if defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS)
/*
 * Function: Angel_BuildParamConfigMessage
 *  Purpose: write a parameter config to a buffer in ADP format.
 *
 * see params.h for details
 */
unsigned int Angel_BuildParamConfigMessage( unsigned char         *buffer,
                                            const ParameterConfig *config )
{
    unsigned char *start = buffer;
    unsigned int i;
 
    PUT32LE( buffer, config->num_parameters );
    buffer += sizeof( word );
 
    for ( i = 0; i < config->num_parameters; ++i )
    {
        PUT32LE( buffer, config->param[i].type );
        buffer += sizeof( word );
        PUT32LE( buffer, config->param[i].value );
        buffer += sizeof( word );
    }
 
    return (buffer - start);
}
#endif /* defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS) */
 
 
#if !defined(TARGET) || defined(TEST_PARAMS)
/*
 * Function: Angel_BuildParamOptionsMessage
 *  Purpose: write a parameter Options to a buffer in ADP format.
 *
 * see params.h for details
 */
unsigned int Angel_BuildParamOptionsMessage( unsigned char          *buffer,
                                             const ParameterOptions *options )
{
    unsigned char *start = buffer;
    unsigned int i, j;
 
    PUT32LE( buffer, options->num_param_lists );
    buffer += sizeof( word );
 
    for ( i = 0; i < options->num_param_lists; ++i )
    {
        PUT32LE( buffer, options->param_list[i].type );
        buffer += sizeof( word );
        PUT32LE( buffer, options->param_list[i].num_options );
        buffer += sizeof( word );
        for ( j = 0; j < options->param_list[i].num_options; ++j )
        {
            PUT32LE( buffer, options->param_list[i].option[j] );
            buffer += sizeof( word );
        }
    }
 
    return (buffer - start);
}
#endif /* !defined(TARGET) || defined(TEST_PARAMS) */
 
 
#if !defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS)
/*
 * Function: Angel_ReadParamConfigMessage
 *  Purpose: read a parameter config from a buffer where it is in ADP format.
 *
 * see params.h for details
 */
bool Angel_ReadParamConfigMessage( const unsigned char *buffer,
                                   ParameterConfig     *config )
{
    unsigned int word;
    unsigned int i;
 
    word = GET32LE( buffer );
    buffer += sizeof( word );
    if ( word > config->num_parameters )
    {
        WARN( "not enough space" );
        return FALSE;
    }
    config->num_parameters = word;
 
    for ( i = 0; i < config->num_parameters; ++i )
    {
        config->param[i].type = (ADP_Parameter)GET32LE( buffer );
        buffer += sizeof( word );
        config->param[i].value = GET32LE( buffer );
        buffer += sizeof( word );
    }
 
    return TRUE;
}
#endif /* !defined(TARGET) || defined(LINK_RECOVERY) || defined(TEST_PARAMS) */
 
 
#if defined(TARGET) || defined(TEST_PARAMS)
/*
 * Function: Angel_ReadParamOptionsMessage
 *  Purpose: read a parameter options block from a buffer
 *             where it is in ADP format.
 *
 * see params.h for details
 */
bool Angel_ReadParamOptionsMessage( const unsigned char *buffer,
                                    ParameterOptions    *options )
{
    unsigned int word;
    unsigned int i, j;
 
    word = GET32LE( buffer );
    buffer += sizeof( word );
    if ( word > options->num_param_lists )
    {
        WARN( "not enough space" );
        return FALSE;
    }
    options->num_param_lists = word;
 
    for ( i = 0; i < options->num_param_lists; ++i )
    {
        ParameterList *list = &options->param_list[i];
 
        list->type = (ADP_Parameter)GET32LE( buffer );
        buffer += sizeof( word );
        word = GET32LE( buffer );
        buffer += sizeof( word );
        if ( word > list->num_options )
        {
            WARN( "not enough list space" );
            return FALSE;
        }
        list->num_options = word;
 
        for ( j = 0; j < list->num_options; ++j )
        {
            list->option[j] = GET32LE( buffer );
            buffer += sizeof( word );
        }
    }
 
    return TRUE;
}
#endif /* defined(TARGET) || defined(TEST_PARAMS) */
 
#endif /* !define(TARGET) || !defined(MINIMAL_ANGEL) || MINIMAL_ANGEL == 0 */
 
/* EOF params.c */

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[/] [or1k/] [trunk/] [gdb-5.3/] [gdb/] [rdi-share/] [params.c] - Blame information for rev 1773

Line No.	Rev	Author	Line
1	1181	sfurman	`/*`
2			`* Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.`
3			`*`
4			`* This software may be freely used, copied, modified, and distributed`
5			`* provided that the above copyright notice is preserved in all copies of the`
6			`* software.`
7			`*/`
8
9			`/* --C--`
10			`*`
11	1183	sfurman	`* $Revision: 1.2 $`
12			`* $Date: 2003-08-15 01:06:10 $`
13	1181	sfurman	`*`
14			`*`
15			`* Project: ANGEL`
16			`*`
17			`* Title: Parameter negotiation utility functions`
18			`*/`
19
20			`#include "params.h"`
21
22			`#include "angel_endian.h"`
23			`#include "logging.h"`
24
25
26			`/*`
27			`* Function: Angel_FindParam`
28			`* Purpose: find the value of a given parameter from a config.`
29			`*`
30			`* see params.h for details`
31			`*/`
32			`bool Angel_FindParam( ADP_Parameter type,`
33			`const ParameterConfig *config,`
34			`unsigned int *value )`
35			`{`
36			`unsigned int i;`
37
38			`for ( i = 0; i < config->num_parameters; ++i )`
39			`if ( config->param[i].type == type )`
40			`{`
41			`*value = config->param[i].value;`
42			`return TRUE;`
43			`}`
44
45			`return FALSE;`
46			`}`
47
48
49			`#if !defined(TARGET) \|\| !defined(MINIMAL_ANGEL) \|\| MINIMAL_ANGEL == 0`
50
51			`ParameterList Angel_FindParamList( const ParameterOptions options,`
52			`ADP_Parameter type )`
53			`{`
54			`unsigned int i;`
55
56			`for ( i = 0; i < options->num_param_lists; ++i )`
57			`if ( options->param_list[i].type == type )`
58			`return &options->param_list[i];`
59
60			`return NULL;`
61			`}`
62
63
64			`#if defined(TARGET) \|\| defined(TEST_PARAMS)`
65			`/*`
66			`* Function: Angel_MatchParams`
67			`* Purpose: find a configuration from the requested options which is`
68			`* the best match from the supported options.`
69			`*`
70			`* see params.h for details`
71			`*/`
72			`const ParameterConfig Angel_MatchParams( const ParameterOptions requested,`
73			`const ParameterOptions *supported )`
74			`{`
75			`static Parameter chosen_params[AP_NUM_PARAMS];`
76			`static ParameterConfig chosen_config = {`
77			`AP_NUM_PARAMS,`
78			`chosen_params`
79			`};`
80			`unsigned int i;`
81
82			`ASSERT( requested != NULL, "requested is NULL" );`
83			`ASSERT( requested != NULL, "requested is NULL" );`
84			`ASSERT( supported->num_param_lists <= AP_NUM_PARAMS, "supp_num too big" );`
85
86			`if ( requested->num_param_lists > supported->num_param_lists )`
87			`{`
88			`WARN( "req_num exceeds supp_num" );`
89			`return NULL;`
90			`}`
91
92			`for ( i = 0; i < requested->num_param_lists; ++i )`
93			`{`
94			`bool match;`
95			`unsigned int j;`
96
97			`const ParameterList *req_list = &requested->param_list[i];`
98			`ADP_Parameter req_type = req_list->type;`
99			`const ParameterList *sup_list = Angel_FindParamList(`
100			`supported, req_type );`
101
102			`if ( sup_list == NULL )`
103			`{`
104			`#ifdef ASSERTIONS_ENABLED`
105			`__rt_warning( "option %x not supported\n", req_type );`
106			`#endif`
107			`return NULL;`
108			`}`
109
110			`for ( j = 0, match = FALSE;`
111			`(j < req_list->num_options) && !match;`
112			`++j`
113			`)`
114			`{`
115			`unsigned int k;`
116
117			`for ( k = 0;`
118			`(k < sup_list->num_options) && !match;`
119			`++k`
120			`)`
121			`{`
122			`if ( req_list->option[j] == sup_list->option[k] )`
123			`{`
124			`#ifdef DEBUG`
125			`__rt_info( "chose value %d for option %x\n",`
126			`req_list->option[j], req_type );`
127			`#endif`
128			`match = TRUE;`
129			`chosen_config.param[i].type = req_type;`
130			`chosen_config.param[i].value = req_list->option[j];`
131			`}`
132			`}`
133			`}`
134
135			`if ( !match )`
136			`{`
137			`#ifdef ASSERTIONS_ENABLED`
138			`__rt_warning( "no match found for option %x\n", req_type );`
139			`#endif`
140			`return NULL;`
141			`}`
142			`}`
143
144			`chosen_config.num_parameters = i;`
145			`INFO( "match succeeded" );`
146			`return &chosen_config;`
147			`}`
148			`#endif /* defined(TARGET) \|\| defined(TEST_PARAMS) */`
149
150
151			`#if !defined(TARGET) \|\| defined(TEST_PARAMS)`
152			`/*`
153			`* Function: Angel_StoreParam`
154			`* Purpose: store the value of a given parameter to a config.`
155			`*`
156			`* see params.h for details`
157			`*/`
158			`bool Angel_StoreParam( ParameterConfig *config,`
159			`ADP_Parameter type,`
160			`unsigned int value )`
161			`{`
162			`unsigned int i;`
163
164			`for ( i = 0; i < config->num_parameters; ++i )`
165			`if ( config->param[i].type == type )`
166			`{`
167			`config->param[i].value = value;`
168			`return TRUE;`
169			`}`
170
171			`return FALSE;`
172			`}`
173			`#endif /* !defined(TARGET) \|\| defined(TEST_PARAMS) */`
174
175
176			`#if defined(TARGET) \|\| defined(LINK_RECOVERY) \|\| defined(TEST_PARAMS)`
177			`/*`
178			`* Function: Angel_BuildParamConfigMessage`
179			`* Purpose: write a parameter config to a buffer in ADP format.`
180			`*`
181			`* see params.h for details`
182			`*/`
183			`unsigned int Angel_BuildParamConfigMessage( unsigned char *buffer,`
184			`const ParameterConfig *config )`
185			`{`
186			`unsigned char *start = buffer;`
187			`unsigned int i;`
188
189			`PUT32LE( buffer, config->num_parameters );`
190			`buffer += sizeof( word );`
191
192			`for ( i = 0; i < config->num_parameters; ++i )`
193			`{`
194			`PUT32LE( buffer, config->param[i].type );`
195			`buffer += sizeof( word );`
196			`PUT32LE( buffer, config->param[i].value );`
197			`buffer += sizeof( word );`
198			`}`
199
200			`return (buffer - start);`
201			`}`
202			`#endif /* defined(TARGET) \|\| defined(LINK_RECOVERY) \|\| defined(TEST_PARAMS) */`
203
204
205			`#if !defined(TARGET) \|\| defined(TEST_PARAMS)`
206			`/*`
207			`* Function: Angel_BuildParamOptionsMessage`
208			`* Purpose: write a parameter Options to a buffer in ADP format.`
209			`*`
210			`* see params.h for details`
211			`*/`
212			`unsigned int Angel_BuildParamOptionsMessage( unsigned char *buffer,`
213			`const ParameterOptions *options )`
214			`{`
215			`unsigned char *start = buffer;`
216			`unsigned int i, j;`
217
218			`PUT32LE( buffer, options->num_param_lists );`
219			`buffer += sizeof( word );`
220
221			`for ( i = 0; i < options->num_param_lists; ++i )`
222			`{`
223			`PUT32LE( buffer, options->param_list[i].type );`
224			`buffer += sizeof( word );`
225			`PUT32LE( buffer, options->param_list[i].num_options );`
226			`buffer += sizeof( word );`
227			`for ( j = 0; j < options->param_list[i].num_options; ++j )`
228			`{`
229			`PUT32LE( buffer, options->param_list[i].option[j] );`
230			`buffer += sizeof( word );`
231			`}`
232			`}`
233
234			`return (buffer - start);`
235			`}`
236			`#endif /* !defined(TARGET) \|\| defined(TEST_PARAMS) */`
237
238
239			`#if !defined(TARGET) \|\| defined(LINK_RECOVERY) \|\| defined(TEST_PARAMS)`
240			`/*`
241			`* Function: Angel_ReadParamConfigMessage`
242			`* Purpose: read a parameter config from a buffer where it is in ADP format.`
243			`*`
244			`* see params.h for details`
245			`*/`
246			`bool Angel_ReadParamConfigMessage( const unsigned char *buffer,`
247			`ParameterConfig *config )`
248			`{`
249			`unsigned int word;`
250			`unsigned int i;`
251
252			`word = GET32LE( buffer );`
253			`buffer += sizeof( word );`
254			`if ( word > config->num_parameters )`
255			`{`
256			`WARN( "not enough space" );`
257			`return FALSE;`
258			`}`
259			`config->num_parameters = word;`
260
261			`for ( i = 0; i < config->num_parameters; ++i )`
262			`{`
263			`config->param[i].type = (ADP_Parameter)GET32LE( buffer );`
264			`buffer += sizeof( word );`
265			`config->param[i].value = GET32LE( buffer );`
266			`buffer += sizeof( word );`
267			`}`
268
269			`return TRUE;`
270			`}`
271			`#endif /* !defined(TARGET) \|\| defined(LINK_RECOVERY) \|\| defined(TEST_PARAMS) */`
272
273
274			`#if defined(TARGET) \|\| defined(TEST_PARAMS)`
275			`/*`
276			`* Function: Angel_ReadParamOptionsMessage`
277			`* Purpose: read a parameter options block from a buffer`
278			`* where it is in ADP format.`
279			`*`
280			`* see params.h for details`
281			`*/`
282			`bool Angel_ReadParamOptionsMessage( const unsigned char *buffer,`
283			`ParameterOptions *options )`
284			`{`
285			`unsigned int word;`
286			`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;`
320			`}`
321			`#endif /* defined(TARGET) \|\| defined(TEST_PARAMS) */`
322
323			`#endif /* !define(TARGET) \|\| !defined(MINIMAL_ANGEL) \|\| MINIMAL_ANGEL == 0 */`
324
325			`/* EOF params.c */`