*/
-#include <stdlib.h>
-#include <string.h>
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#include "glapi/mesa.h"
+#else
#include "main/glheader.h"
#include "main/compiler.h"
-#include "glapi.h"
-#include "glapioffsets.h"
-#include "glapitable.h"
-
+#endif
-static void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset);
+#include "glapi/glapi.h"
+#include "glapi/glapi_priv.h"
+#include "glapi/glapitable.h"
+#include "glapi/glapioffsets.h"
-/**
- * strdup() is actually not a standard ANSI C or POSIX routine.
- * Irix will not define it if ANSI mode is in effect.
+/**********************************************************************
+ * Static function management.
*/
-static char *
-str_dup(const char *str)
-{
- char *copy;
- copy = (char*) malloc(strlen(str) + 1);
- if (!copy)
- return NULL;
- strcpy(copy, str);
- return copy;
-}
-
-#if defined(USE_X64_64_ASM) && defined(GLX_USE_TLS)
-# define DISPATCH_FUNCTION_SIZE 16
-#elif defined(USE_X86_ASM)
-# if defined(THREADS) && !defined(GLX_USE_TLS)
-# define DISPATCH_FUNCTION_SIZE 32
-# else
-# define DISPATCH_FUNCTION_SIZE 16
-# endif
-#endif
-
-#if !defined(DISPATCH_FUNCTION_SIZE) && !defined(XFree86Server) && !defined(XGLServer)
+#if !defined(DISPATCH_FUNCTION_SIZE) && !defined(XFree86Server)
# define NEED_FUNCTION_POINTER
#endif
-
-/* The code in this file is auto-generated with Python */
-#include "glprocs.h"
+#include "glapi/glprocs.h"
/**
* 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++) {
const char *testName = gl_string_table + static_functions[i].Name_offset;
#ifdef MANGLE
- /* skip the "m" prefix on the name */
+ /* skip the prefix on the name */
if (strcmp(testName, n + 1) == 0)
#else
if (strcmp(testName, n) == 0)
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;
-}
-
-#if !defined(XFree86Server) && !defined(XGLServer)
-#ifdef USE_X86_ASM
-
-#if defined( GLX_USE_TLS )
-extern GLubyte gl_dispatch_functions_start[];
-extern GLubyte gl_dispatch_functions_end[];
-#else
-extern const GLubyte gl_dispatch_functions_start[];
-#endif
+ return f->Offset;
+}
-#endif /* USE_X86_ASM */
+#if !defined(XFree86Server)
/**
* Return dispatch function address for the named static (built-in) function.
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)
- ? (_glapi_proc) (gl_dispatch_functions_start
- + (DISPATCH_FUNCTION_SIZE * f->Offset))
- : f->Address;
+ return (f->Address == NULL)
+ ? get_entrypoint_address(f->Offset)
+ : f->Address;
#elif defined(DISPATCH_FUNCTION_SIZE)
- return (_glapi_proc) (gl_dispatch_functions_start
- + (DISPATCH_FUNCTION_SIZE * f->Offset));
+ return get_entrypoint_address(f->Offset);
#else
- return f->Address;
+ return f->Address;
#endif
- }
- else {
- return NULL;
- }
}
-#endif /* !defined(XFree86Server) && !defined(XGLServer) */
+#else
+
+static _glapi_proc
+get_static_proc_address(const char *funcName)
+{
+ (void) funcName;
+ return NULL;
+}
+#endif /* !defined(XFree86Server) */
/**
static struct _glapi_function ExtEntryTable[MAX_EXTENSION_FUNCS];
static GLuint NumExtEntryPoints = 0;
-#ifdef USE_SPARC_ASM
-extern void __glapi_sparc_icache_flush(unsigned int *);
-#endif
-/**
- * Generate a dispatch function (entrypoint) which jumps through
- * the given slot number (offset) in the current dispatch table.
- * We need assembly language in order to accomplish this.
- */
-static _glapi_proc
-generate_entrypoint(GLuint functionOffset)
+static struct _glapi_function *
+get_extension_proc(const char *funcName)
{
-#if defined(USE_X86_ASM)
- /* 32 is chosen as something of a magic offset. For x86, the dispatch
- * at offset 32 is the first one where the offset in the
- * "jmp OFFSET*4(%eax)" can't be encoded in a single byte.
- */
- const GLubyte * const template_func = gl_dispatch_functions_start
- + (DISPATCH_FUNCTION_SIZE * 32);
- GLubyte * const code = (GLubyte *) malloc(DISPATCH_FUNCTION_SIZE);
+ GLuint i;
+ for (i = 0; i < NumExtEntryPoints; i++) {
+ if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
+ return & ExtEntryTable[i];
+ }
+ }
+ return NULL;
+}
- if ( code != NULL ) {
- (void) memcpy(code, template_func, DISPATCH_FUNCTION_SIZE);
- fill_in_entrypoint_offset( (_glapi_proc) code, functionOffset );
+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 (_glapi_proc) code;
-#elif defined(USE_SPARC_ASM) && (defined(PTHREADS) || defined(GLX_USE_TLS))
- static const unsigned int template[] = {
- 0x07000000, /* sethi %hi(0), %g3 */
- 0x8210000f, /* mov %o7, %g1 */
- 0x40000000, /* call */
- 0x9e100001, /* mov %g1, %o7 */
- };
-#ifdef GLX_USE_TLS
- extern unsigned int __glapi_sparc_tls_stub;
- unsigned long call_dest = (unsigned long ) &__glapi_sparc_tls_stub;
-#else
- extern unsigned int __glapi_sparc_pthread_stub;
- unsigned long call_dest = (unsigned long ) &__glapi_sparc_pthread_stub;
-#endif
- unsigned int *code = (unsigned int *) malloc(sizeof(template));
- if (code) {
- code[0] = template[0] | (functionOffset & 0x3fffff);
- code[1] = template[1];
- __glapi_sparc_icache_flush(&code[0]);
- code[2] = template[2] |
- (((call_dest - ((unsigned long) &code[2]))
- >> 2) & 0x3fffffff);
- code[3] = template[3];
- __glapi_sparc_icache_flush(&code[2]);
+ 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 (_glapi_proc) code;
-#else
- (void) functionOffset;
return NULL;
-#endif /* USE_*_ASM */
}
/**
- * This function inserts a new dispatch offset into the assembly language
- * stub that was generated with the preceeding function.
+ * strdup() is actually not a standard ANSI C or POSIX routine.
+ * Irix will not define it if ANSI mode is in effect.
*/
-static void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
+static char *
+str_dup(const char *str)
{
-#if defined(USE_X86_ASM)
- GLubyte * const code = (GLubyte *) entrypoint;
-
-#if DISPATCH_FUNCTION_SIZE == 32
- *((unsigned int *)(code + 11)) = 4 * offset;
- *((unsigned int *)(code + 22)) = 4 * offset;
-#elif DISPATCH_FUNCTION_SIZE == 16 && defined( GLX_USE_TLS )
- *((unsigned int *)(code + 8)) = 4 * offset;
-#elif DISPATCH_FUNCTION_SIZE == 16
- *((unsigned int *)(code + 7)) = 4 * offset;
-#else
-# error Invalid DISPATCH_FUNCTION_SIZE!
-#endif
-
-#elif defined(USE_SPARC_ASM)
- unsigned int *code = (unsigned int *) entrypoint;
- code[0] &= ~0x3fffff;
- code[0] |= (offset * sizeof(void *)) & 0x3fffff;
- __glapi_sparc_icache_flush(&code[0]);
-#else
-
- /* an unimplemented architecture */
- (void) entrypoint;
- (void) offset;
-
-#endif /* USE_*_ASM */
+ char *copy;
+ copy = (char*) malloc(strlen(str) + 1);
+ if (!copy)
+ return NULL;
+ strcpy(copy, str);
+ return copy;
}
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;
}
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;
}
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);
}
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
- if (funcName[0] != 'm' || funcName[1] != 'g' || funcName[2] != 'l')
+ /* skip the prefix on the name */
+ if (funcName[1] != 'g' || funcName[2] != 'l')
return NULL;
#else
if (funcName[0] != 'g' || funcName[1] != 'l')
#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 ) && !defined( XGLServer )
/* 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;
}
const char *
_glapi_get_proc_name(GLuint offset)
{
- GLuint i;
const char * n;
/* search built-in functions */
}
/* search added extension functions */
- for (i = 0; i < NumExtEntryPoints; i++) {
- if (ExtEntryTable[i].dispatch_offset == offset) {
- return ExtEntryTable[i].name;
- }
+ return get_extension_proc_name(offset);
+}
+
+
+
+/**********************************************************************
+ * GL API table functions.
+ */
+
+
+/*
+ * The dispatch table size (number of entries) is the size of the
+ * _glapi_table struct plus the number of dynamic entries we can add.
+ * The extra slots can be filled in by DRI drivers that register new extension
+ * functions.
+ */
+#define DISPATCH_TABLE_SIZE (sizeof(struct _glapi_table) / sizeof(void *) + MAX_EXTENSION_FUNCS)
+
+
+/**
+ * Return size of dispatch table struct as number of functions (or
+ * slots).
+ */
+PUBLIC GLuint
+_glapi_get_dispatch_table_size(void)
+{
+ return DISPATCH_TABLE_SIZE;
+}
+
+
+/**
+ * Make sure there are no NULL pointers in the given dispatch table.
+ * Intended for debugging purposes.
+ */
+void
+_glapi_check_table_not_null(const struct _glapi_table *table)
+{
+#ifdef EXTRA_DEBUG /* set to DEBUG for extra DEBUG */
+ const GLuint entries = _glapi_get_dispatch_table_size();
+ const void **tab = (const void **) table;
+ GLuint i;
+ for (i = 1; i < entries; i++) {
+ assert(tab[i]);
}
- return NULL;
+#else
+ (void) table;
+#endif
+}
+
+
+/**
+ * Do some spot checks to be sure that the dispatch table
+ * slots are assigned correctly. For debugging only.
+ */
+void
+_glapi_check_table(const struct _glapi_table *table)
+{
+#ifdef EXTRA_DEBUG /* set to DEBUG for extra DEBUG */
+ {
+ GLuint BeginOffset = _glapi_get_proc_offset("glBegin");
+ char *BeginFunc = (char*) &table->Begin;
+ GLuint offset = (BeginFunc - (char *) table) / sizeof(void *);
+ assert(BeginOffset == _gloffset_Begin);
+ assert(BeginOffset == offset);
+ }
+ {
+ GLuint viewportOffset = _glapi_get_proc_offset("glViewport");
+ char *viewportFunc = (char*) &table->Viewport;
+ GLuint offset = (viewportFunc - (char *) table) / sizeof(void *);
+ assert(viewportOffset == _gloffset_Viewport);
+ assert(viewportOffset == offset);
+ }
+ {
+ GLuint VertexPointerOffset = _glapi_get_proc_offset("glVertexPointer");
+ char *VertexPointerFunc = (char*) &table->VertexPointer;
+ GLuint offset = (VertexPointerFunc - (char *) table) / sizeof(void *);
+ assert(VertexPointerOffset == _gloffset_VertexPointer);
+ assert(VertexPointerOffset == offset);
+ }
+ {
+ GLuint ResetMinMaxOffset = _glapi_get_proc_offset("glResetMinmax");
+ char *ResetMinMaxFunc = (char*) &table->ResetMinmax;
+ GLuint offset = (ResetMinMaxFunc - (char *) table) / sizeof(void *);
+ assert(ResetMinMaxOffset == _gloffset_ResetMinmax);
+ assert(ResetMinMaxOffset == offset);
+ }
+ {
+ GLuint blendColorOffset = _glapi_get_proc_offset("glBlendColor");
+ char *blendColorFunc = (char*) &table->BlendColor;
+ GLuint offset = (blendColorFunc - (char *) table) / sizeof(void *);
+ assert(blendColorOffset == _gloffset_BlendColor);
+ assert(blendColorOffset == offset);
+ }
+ {
+ GLuint secondaryColor3fOffset = _glapi_get_proc_offset("glSecondaryColor3fEXT");
+ char *secondaryColor3fFunc = (char*) &table->SecondaryColor3fEXT;
+ GLuint offset = (secondaryColor3fFunc - (char *) table) / sizeof(void *);
+ assert(secondaryColor3fOffset == _gloffset_SecondaryColor3fEXT);
+ assert(secondaryColor3fOffset == offset);
+ }
+ {
+ GLuint pointParameterivOffset = _glapi_get_proc_offset("glPointParameterivNV");
+ char *pointParameterivFunc = (char*) &table->PointParameterivNV;
+ GLuint offset = (pointParameterivFunc - (char *) table) / sizeof(void *);
+ assert(pointParameterivOffset == _gloffset_PointParameterivNV);
+ assert(pointParameterivOffset == offset);
+ }
+ {
+ GLuint setFenceOffset = _glapi_get_proc_offset("glSetFenceNV");
+ char *setFenceFunc = (char*) &table->SetFenceNV;
+ GLuint offset = (setFenceFunc - (char *) table) / sizeof(void *);
+ assert(setFenceOffset == _gloffset_SetFenceNV);
+ assert(setFenceOffset == offset);
+ }
+#else
+ (void) table;
+#endif
}
projects / mesa.git / blobdiff