diff options
Diffstat (limited to 'src/mesa/glapi/glapi_getproc.c')
| -rw-r--r-- | src/mesa/glapi/glapi_getproc.c | 321 |
1 files changed, 213 insertions, 108 deletions
diff --git a/src/mesa/glapi/glapi_getproc.c b/src/mesa/glapi/glapi_getproc.c index 46b466920b6..295657875dc 100644 --- a/src/mesa/glapi/glapi_getproc.c +++ b/src/mesa/glapi/glapi_getproc.c @@ -44,11 +44,14 @@ #include "glapi/glapioffsets.h" +/********************************************************************** + * Static function management. + */ + + #if !defined(DISPATCH_FUNCTION_SIZE) && !defined(XFree86Server) # define NEED_FUNCTION_POINTER #endif - -/* The code in this file is auto-generated with Python */ #include "glapi/glprocs.h" @@ -57,7 +60,7 @@ * and return the corresponding glprocs_table_t entry. */ static const glprocs_table_t * -find_entry( const char * n ) +get_static_proc( const char * n ) { GLuint i; for (i = 0; static_functions[i].Name_offset >= 0; i++) { @@ -83,11 +86,12 @@ find_entry( const char * n ) static GLint get_static_proc_offset(const char *funcName) { - const glprocs_table_t * const f = find_entry( funcName ); - if (f) { - return f->Offset; + const glprocs_table_t * const f = get_static_proc( funcName ); + if (f == NULL) { + return -1; } - return -1; + + return f->Offset; } @@ -100,25 +104,32 @@ get_static_proc_offset(const char *funcName) static _glapi_proc get_static_proc_address(const char *funcName) { - const glprocs_table_t * const f = find_entry( funcName ); - if (f) { + const glprocs_table_t * const f = get_static_proc( funcName ); + if (f == NULL) { + return NULL; + } + #if defined(DISPATCH_FUNCTION_SIZE) && defined(GLX_INDIRECT_RENDERING) - return (f->Address == NULL) - ? get_entrypoint_address(f->Offset) - : f->Address; + return (f->Address == NULL) + ? get_entrypoint_address(f->Offset) + : f->Address; #elif defined(DISPATCH_FUNCTION_SIZE) - return get_entrypoint_address(f->Offset); + return get_entrypoint_address(f->Offset); #else - return f->Address; + return f->Address; #endif - } - else { - return NULL; - } } -#endif /* !defined(XFree86Server) */ +#else +static _glapi_proc +get_static_proc_address(const char *funcName) +{ + (void) funcName; + return NULL; +} + +#endif /* !defined(XFree86Server) */ /** @@ -199,6 +210,56 @@ static struct _glapi_function ExtEntryTable[MAX_EXTENSION_FUNCS]; static GLuint NumExtEntryPoints = 0; +static struct _glapi_function * +get_extension_proc(const char *funcName) +{ + GLuint i; + for (i = 0; i < NumExtEntryPoints; i++) { + if (strcmp(ExtEntryTable[i].name, funcName) == 0) { + return & ExtEntryTable[i]; + } + } + return NULL; +} + + +static GLint +get_extension_proc_offset(const char *funcName) +{ + const struct _glapi_function * const f = get_extension_proc( funcName ); + if (f == NULL) { + return -1; + } + + return f->dispatch_offset; +} + + +static _glapi_proc +get_extension_proc_address(const char *funcName) +{ + const struct _glapi_function * const f = get_extension_proc( funcName ); + if (f == NULL) { + return NULL; + } + + return f->dispatch_stub; +} + + +static const char * +get_extension_proc_name(GLuint offset) +{ + GLuint i; + for (i = 0; i < NumExtEntryPoints; i++) { + if (ExtEntryTable[i].dispatch_offset == offset) { + return ExtEntryTable[i].name; + } + } + return NULL; +} + + /** * strdup() is actually not a standard ANSI C or POSIX routine. * Irix will not define it if ANSI mode is in effect. @@ -232,20 +293,55 @@ static struct _glapi_function * add_function_name( const char * funcName ) { struct _glapi_function * entry = NULL; - - if (NumExtEntryPoints < MAX_EXTENSION_FUNCS) { - _glapi_proc entrypoint = generate_entrypoint(~0); - if (entrypoint != NULL) { - entry = & ExtEntryTable[NumExtEntryPoints]; - - ExtEntryTable[NumExtEntryPoints].name = str_dup(funcName); - ExtEntryTable[NumExtEntryPoints].parameter_signature = NULL; - ExtEntryTable[NumExtEntryPoints].dispatch_offset = ~0; - ExtEntryTable[NumExtEntryPoints].dispatch_stub = entrypoint; - NumExtEntryPoints++; - } + _glapi_proc entrypoint = NULL; + char * name_dup = NULL; + + if (NumExtEntryPoints >= MAX_EXTENSION_FUNCS) + return NULL; + + if (funcName == NULL) + return NULL; + + name_dup = str_dup(funcName); + if (name_dup == NULL) + return NULL; + + entrypoint = generate_entrypoint(~0); + + if (entrypoint == NULL) { + free(name_dup); + return NULL; } + entry = & ExtEntryTable[NumExtEntryPoints]; + NumExtEntryPoints++; + + entry->name = name_dup; + entry->parameter_signature = NULL; + entry->dispatch_offset = ~0; + entry->dispatch_stub = entrypoint; + + return entry; +} + + +static struct _glapi_function * +set_entry_info( struct _glapi_function * entry, const char * signature, unsigned offset ) +{ + char * sig_dup = NULL; + + if (signature == NULL) + return NULL; + + sig_dup = str_dup(signature); + if (sig_dup == NULL) + return NULL; + + fill_in_entrypoint_offset(entry->dispatch_stub, offset); + + entry->parameter_signature = sig_dup; + entry->dispatch_offset = offset; + return entry; } @@ -307,88 +403,103 @@ _glapi_add_dispatch( const char * const * function_names, struct _glapi_function * entry[8]; GLboolean is_static[8]; unsigned i; - unsigned j; int offset = ~0; - int new_offset; + init_glapi_relocs_once(); (void) memset( is_static, 0, sizeof( is_static ) ); (void) memset( entry, 0, sizeof( entry ) ); + /* Find the _single_ dispatch offset for all function names that already + * exist (and have a dispatch offset). + */ + for ( i = 0 ; function_names[i] != NULL ; i++ ) { - /* Do some trivial validation on the name of the function. - */ + const char * funcName = function_names[i]; + int static_offset; + int extension_offset; - if (!function_names[i] || function_names[i][0] != 'g' || function_names[i][1] != 'l') + if (funcName[0] != 'g' || funcName[1] != 'l') return -1; - - /* Determine if the named function already exists. If the function does - * exist, it must have the same parameter signature as the function - * being added. - */ - - new_offset = get_static_proc_offset(function_names[i]); - if (new_offset >= 0) { + + /* search built-in functions */ + static_offset = get_static_proc_offset(funcName); + + if (static_offset >= 0) { + + is_static[i] = GL_TRUE; + /* FIXME: Make sure the parameter signatures match! How do we get * FIXME: the parameter signature for static functions? */ - if ( (offset != ~0) && (new_offset != offset) ) { + if ( (offset != ~0) && (static_offset != offset) ) { return -1; } - is_static[i] = GL_TRUE; - offset = new_offset; + offset = static_offset; + + continue; } - - - for ( j = 0 ; j < NumExtEntryPoints ; j++ ) { - if (strcmp(ExtEntryTable[j].name, function_names[i]) == 0) { - /* The offset may be ~0 if the function name was added by - * glXGetProcAddress but never filled in by the driver. - */ - - if (ExtEntryTable[j].dispatch_offset != ~0) { - if (strcmp(real_sig, ExtEntryTable[j].parameter_signature) - != 0) { - return -1; - } - - if ( (offset != ~0) && (ExtEntryTable[j].dispatch_offset != offset) ) { - return -1; - } - - offset = ExtEntryTable[j].dispatch_offset; - } - - entry[i] = & ExtEntryTable[j]; - break; + + /* search added extension functions */ + entry[i] = get_extension_proc(funcName); + + if (entry[i] != NULL) { + extension_offset = entry[i]->dispatch_offset; + + /* The offset may be ~0 if the function name was added by + * glXGetProcAddress but never filled in by the driver. + */ + + if (extension_offset == ~0) { + continue; + } + + if (strcmp(real_sig, entry[i]->parameter_signature) != 0) { + return -1; + } + + if ( (offset != ~0) && (extension_offset != offset) ) { + return -1; } + + offset = extension_offset; } } + /* If all function names are either new (or with no dispatch offset), + * allocate a new dispatch offset. + */ + if (offset == ~0) { offset = next_dynamic_offset; next_dynamic_offset++; } + /* Fill in the dispatch offset for the new function names (and those with + * no dispatch offset). + */ + for ( i = 0 ; function_names[i] != NULL ; i++ ) { - if (! is_static[i] ) { + if (is_static[i]) { + continue; + } + + /* generate entrypoints for new function names */ + if (entry[i] == NULL) { + entry[i] = add_function_name( function_names[i] ); if (entry[i] == NULL) { - entry[i] = add_function_name( function_names[i] ); - if (entry[i] == NULL) { - /* FIXME: Possible memory leak here. - */ - return -1; - } + /* FIXME: Possible memory leak here. */ + return -1; } + } - entry[i]->parameter_signature = str_dup(real_sig); - fill_in_entrypoint_offset(entry[i]->dispatch_stub, offset); - entry[i]->dispatch_offset = offset; + if (entry[i]->dispatch_offset == ~0) { + set_entry_info( entry[i], real_sig, offset ); } } - + return offset; } @@ -399,13 +510,13 @@ _glapi_add_dispatch( const char * const * function_names, PUBLIC GLint _glapi_get_proc_offset(const char *funcName) { + GLint offset; + /* search extension functions first */ - GLuint i; - for (i = 0; i < NumExtEntryPoints; i++) { - if (strcmp(ExtEntryTable[i].name, funcName) == 0) { - return ExtEntryTable[i].dispatch_offset; - } - } + offset = get_extension_proc_offset(funcName); + if (offset >= 0) + return offset; + /* search static functions */ return get_static_proc_offset(funcName); } @@ -420,8 +531,10 @@ _glapi_get_proc_offset(const char *funcName) PUBLIC _glapi_proc _glapi_get_proc_address(const char *funcName) { + _glapi_proc func; struct _glapi_function * entry; - GLuint i; + + init_glapi_relocs_once(); #ifdef MANGLE /* skip the prefix on the name */ @@ -433,23 +546,21 @@ _glapi_get_proc_address(const char *funcName) #endif /* search extension functions first */ - for (i = 0; i < NumExtEntryPoints; i++) { - if (strcmp(ExtEntryTable[i].name, funcName) == 0) { - return ExtEntryTable[i].dispatch_stub; - } - } + func = get_extension_proc_address(funcName); + if (func) + return func; -#if !defined( XFree86Server ) /* search static functions */ - { - const _glapi_proc func = get_static_proc_address(funcName); - if (func) - return func; - } -#endif /* !defined( XFree86Server ) */ + func = get_static_proc_address(funcName); + if (func) + return func; + /* generate entrypoint, dispatch offset must be filled in by the driver */ entry = add_function_name(funcName); - return (entry == NULL) ? NULL : entry->dispatch_stub; + if (entry == NULL) + return NULL; + + return entry->dispatch_stub; } @@ -461,7 +572,6 @@ _glapi_get_proc_address(const char *funcName) const char * _glapi_get_proc_name(GLuint offset) { - GLuint i; const char * n; /* search built-in functions */ @@ -471,12 +581,7 @@ _glapi_get_proc_name(GLuint offset) } /* search added extension functions */ - for (i = 0; i < NumExtEntryPoints; i++) { - if (ExtEntryTable[i].dispatch_offset == offset) { - return ExtEntryTable[i].name; - } - } - return NULL; + return get_extension_proc_name(offset); } |