mesa: refactor: move GetProcAddress code from glapi.c into new glapi_getproc.c file

3 files changed, 655 insertions, 624 deletions

diff --git a/src/mesa/glapi/glapi.c b/src/mesa/glapi/glapi.c
index 47c57822732..ed59ddb0b73 100644
--- a/src/mesa/glapi/glapi.c
+++ b/src/mesa/glapi/glapi.c
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  7.1
  *
- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -55,18 +55,12 @@
 #include "glapioffsets.h"
 #include "glapitable.h"
 
+
 /***** BEGIN NO-OP DISPATCH *****/
 
 static GLboolean WarnFlag = GL_FALSE;
 static _glapi_warning_func warning_func;
 
-#if defined(PTHREADS) || defined(GLX_USE_TLS)
-static void init_glapi_relocs(void);
-#endif
-
-static _glapi_proc generate_entrypoint(GLuint functionOffset);
-static void fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset);
-
 /*
  * Enable/disable printing of warning messages.
  */
@@ -205,21 +199,6 @@ PUBLIC void *_glapi_Context = NULL;
 /*@}*/
 
 
-/**
- * strdup() is actually not a standard ANSI C or POSIX routine.
- * Irix will not define it if ANSI mode is in effect.
- */
-static char *
-str_dup(const char *str)
-{
-   char *copy;
-   copy = (char*) malloc(strlen(str) + 1);
-   if (!copy)
-      return NULL;
-   strcpy(copy, str);
-   return copy;
-}
-
 
 
 /**
@@ -297,6 +276,32 @@ _glapi_get_context(void)
 
 
 
+#if defined(PTHREADS) || defined(GLX_USE_TLS)
+/**
+ * Perform platform-specific GL API entry-point fixups.
+ */
+static void
+init_glapi_relocs( void )
+{
+#if defined(USE_X86_ASM) && defined(GLX_USE_TLS) && !defined(GLX_X86_READONLY_TEXT)
+    extern unsigned long _x86_get_dispatch(void);
+    char run_time_patch[] = {
+       0x65, 0xa1, 0, 0, 0, 0 /* movl %gs:0,%eax */
+    };
+    GLuint *offset = (GLuint *) &run_time_patch[2]; /* 32-bits for x86/32 */
+    const GLubyte * const get_disp = (const GLubyte *) run_time_patch;
+    GLubyte * curr_func = (GLubyte *) gl_dispatch_functions_start;
+
+    *offset = _x86_get_dispatch();
+    while ( curr_func != (GLubyte *) gl_dispatch_functions_end ) {
+	(void) memcpy( curr_func, get_disp, sizeof(run_time_patch));
+	curr_func += DISPATCH_FUNCTION_SIZE;
+    }
+#endif
+}
+#endif /* defined(PTHREADS) || defined(GLX_USE_TLS) */
+
+
 /**
  * Set the global or per-thread dispatch table pointer.
  * If the dispatch parameter is NULL we'll plug in the no-op dispatch
@@ -353,132 +358,6 @@ _glapi_get_dispatch(void)
 
 
 
-/***
- *** The rest of this file is pretty much concerned with GetProcAddress
- *** functionality.
- ***/
-
-#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)
-# define NEED_FUNCTION_POINTER
-#endif
-
-/* The code in this file is auto-generated with Python */
-#include "glprocs.h"
-
-
-/**
- * Search the table of static entrypoint functions for the named function
- * and return the corresponding glprocs_table_t entry.
- */
-static const glprocs_table_t *
-find_entry( 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;
-      if (strcmp(testName, n) == 0) {
-	 return &static_functions[i];
-      }
-   }
-   return NULL;
-}
-
-
-/**
- * Return dispatch table offset of the named static (built-in) function.
- * Return -1 if function not found.
- */
-static GLint
-get_static_proc_offset(const char *funcName)
-{
-   const glprocs_table_t * const f = find_entry( funcName );
-   if (f) {
-      return f->Offset;
-   }
-   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
-
-#endif /* USE_X86_ASM */
-
-
-/**
- * Return dispatch function address for the named static (built-in) function.
- * Return NULL if function not found.
- */
-static _glapi_proc
-get_static_proc_address(const char *funcName)
-{
-   const glprocs_table_t * const f = find_entry( funcName );
-   if (f) {
-#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;
-#elif defined(DISPATCH_FUNCTION_SIZE)
-      return (_glapi_proc) (gl_dispatch_functions_start 
-                            + (DISPATCH_FUNCTION_SIZE * f->Offset));
-#else
-      return f->Address;
-#endif
-   }
-   else {
-      return NULL;
-   }
-}
-
-#endif /* !defined(XFree86Server) && !defined(XGLServer) */
-
-
-
-/**
- * Return the name of the function at the given offset in the dispatch
- * table.  For debugging only.
- */
-static const char *
-get_static_proc_name( GLuint offset )
-{
-   GLuint i;
-   for (i = 0; static_functions[i].Name_offset >= 0; i++) {
-      if (static_functions[i].Offset == offset) {
-	 return gl_string_table + static_functions[i].Name_offset;
-      }
-   }
-   return NULL;
-}
-
-
-
-/**********************************************************************
- * Extension function management.
- */
-
-/*
- * Number of extension functions which we can dynamically add at runtime.
- */
-#define MAX_EXTENSION_FUNCS 300
-
 
 /*
  * The dispatch table size (number of entries) is the size of the
@@ -490,450 +369,6 @@ get_static_proc_name( GLuint offset )
 
 
 /**
- * Track information about a function added to the GL API.
- */
-struct _glapi_function {
-   /**
-    * Name of the function.
-    */
-   const char * name;
-
-
-   /**
-    * Text string that describes the types of the parameters passed to the
-    * named function.   Parameter types are converted to characters using the
-    * following rules:
-    *   - 'i' for \c GLint, \c GLuint, and \c GLenum
-    *   - 'p' for any pointer type
-    *   - 'f' for \c GLfloat and \c GLclampf
-    *   - 'd' for \c GLdouble and \c GLclampd
-    */
-   const char * parameter_signature;
-
-
-   /**
-    * Offset in the dispatch table where the pointer to the real function is
-    * located.  If the driver has not requested that the named function be
-    * added to the dispatch table, this will have the value ~0.
-    */
-   unsigned dispatch_offset;
-
-
-   /**
-    * Pointer to the dispatch stub for the named function.
-    * 
-    * \todo
-    * The semantic of this field should be changed slightly.  Currently, it
-    * is always expected to be non-\c NULL.  However, it would be better to
-    * only allocate the entry-point stub when the application requests the
-    * function via \c glXGetProcAddress.  This would save memory for all the
-    * functions that the driver exports but that the application never wants
-    * to call.
-    */
-   _glapi_proc dispatch_stub;
-};
-
-
-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)
-{
-#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);
-
-
-   if ( code != NULL ) {
-      (void) memcpy(code, template_func, DISPATCH_FUNCTION_SIZE);
-      fill_in_entrypoint_offset( (_glapi_proc) code, functionOffset );
-   }
-
-   return (_glapi_proc) code;
-#elif defined(USE_SPARC_ASM)
-
-#ifdef __arch64__
-   static const unsigned int insn_template[] = {
-	   0x05000000,	/* sethi	%uhi(_glapi_Dispatch), %g2	*/
-	   0x03000000,	/* sethi	%hi(_glapi_Dispatch), %g1	*/
-	   0x8410a000,	/* or		%g2, %ulo(_glapi_Dispatch), %g2	*/
-	   0x82106000,	/* or		%g1, %lo(_glapi_Dispatch), %g1	*/
-	   0x8528b020,	/* sllx		%g2, 32, %g2			*/
-	   0xc2584002,	/* ldx		[%g1 + %g2], %g1		*/
-	   0x05000000,	/* sethi	%hi(8 * glapioffset), %g2	*/
-	   0x8410a000,	/* or		%g2, %lo(8 * glapioffset), %g2	*/
-	   0xc6584002,	/* ldx		[%g1 + %g2], %g3		*/
-	   0x81c0c000,	/* jmpl		%g3, %g0			*/
-	   0x01000000	/*  nop						*/
-   };
-#else
-   static const unsigned int insn_template[] = {
-	   0x03000000,	/* sethi	%hi(_glapi_Dispatch), %g1	  */
-	   0xc2006000,	/* ld		[%g1 + %lo(_glapi_Dispatch)], %g1 */
-	   0xc6006000,	/* ld		[%g1 + %lo(4*glapioffset)], %g3	  */
-	   0x81c0c000,	/* jmpl		%g3, %g0			  */
-	   0x01000000	/*  nop						  */
-   };
-#endif /* __arch64__ */
-   unsigned int *code = (unsigned int *) malloc(sizeof(insn_template));
-   unsigned long glapi_addr = (unsigned long) &_glapi_Dispatch;
-   if (code) {
-      memcpy(code, insn_template, sizeof(insn_template));
-
-#ifdef __arch64__
-      code[0] |= (glapi_addr >> (32 + 10));
-      code[1] |= ((glapi_addr & 0xffffffff) >> 10);
-      __glapi_sparc_icache_flush(&code[0]);
-      code[2] |= ((glapi_addr >> 32) & ((1 << 10) - 1));
-      code[3] |= (glapi_addr & ((1 << 10) - 1));
-      __glapi_sparc_icache_flush(&code[2]);
-      code[6] |= ((functionOffset * 8) >> 10);
-      code[7] |= ((functionOffset * 8) & ((1 << 10) - 1));
-      __glapi_sparc_icache_flush(&code[6]);
-#else
-      code[0] |= (glapi_addr >> 10);
-      code[1] |= (glapi_addr & ((1 << 10) - 1));
-      __glapi_sparc_icache_flush(&code[0]);
-      code[2] |= (functionOffset * 4);
-      __glapi_sparc_icache_flush(&code[2]);
-#endif /* __arch64__ */
-   }
-   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.
- */
-static void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
-{
-#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)
-
-   /* XXX this hasn't been tested! */
-   unsigned int *code = (unsigned int *) entrypoint;
-#ifdef __arch64__
-   code[6] = 0x05000000;  /* sethi	%hi(8 * glapioffset), %g2	*/
-   code[7] = 0x8410a000;  /* or		%g2, %lo(8 * glapioffset), %g2	*/
-   code[6] |= ((offset * 8) >> 10);
-   code[7] |= ((offset * 8) & ((1 << 10) - 1));
-   __glapi_sparc_icache_flush(&code[6]);
-#else /* __arch64__ */
-   code[2] = 0xc6006000;  /* ld		[%g1 + %lo(4*glapioffset)], %g3	  */
-   code[2] |= (offset * 4);
-   __glapi_sparc_icache_flush(&code[2]);
-#endif /* __arch64__ */
-
-#else
-
-   /* an unimplemented architecture */
-   (void) entrypoint;
-   (void) offset;
-
-#endif /* USE_*_ASM */
-}
-
-
-/**
- * Generate new entrypoint
- *
- * Use a temporary dispatch offset of ~0 (i.e. -1).  Later, when the driver
- * calls \c _glapi_add_dispatch we'll put in the proper offset.  If that
- * never happens, and the user calls this function, he'll segfault.  That's
- * what you get when you try calling a GL function that doesn't really exist.
- * 
- * \param funcName  Name of the function to create an entry-point for.
- * 
- * \sa _glapi_add_entrypoint
- */
-
-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++;
-      }
-   }
-
-   return entry;
-}
-
-
-/**
- * Fill-in the dispatch stub for the named function.
- * 
- * This function is intended to be called by a hardware driver.  When called,
- * a dispatch stub may be created created for the function.  A pointer to this
- * dispatch function will be returned by glXGetProcAddress.
- *
- * \param function_names       Array of pointers to function names that should
- *                             share a common dispatch offset.
- * \param parameter_signature  String representing the types of the parameters
- *                             passed to the named function.  Parameter types
- *                             are converted to characters using the following
- *                             rules:
- *                               - 'i' for \c GLint, \c GLuint, and \c GLenum
- *                               - 'p' for any pointer type
- *                               - 'f' for \c GLfloat and \c GLclampf
- *                               - 'd' for \c GLdouble and \c GLclampd
- *
- * \returns
- * The offset in the dispatch table of the named function.  A pointer to the
- * driver's implementation of the named function should be stored at
- * \c dispatch_table[\c offset].
- *
- * \sa glXGetProcAddress
- *
- * \warning
- * This function can only handle up to 8 names at a time.  As far as I know,
- * the maximum number of names ever associated with an existing GL function is
- * 4 (\c glPointParameterfSGIS, \c glPointParameterfEXT,
- * \c glPointParameterfARB, and \c glPointParameterf), so this should not be
- * too painful of a limitation.
- *
- * \todo
- * Determine whether or not \c parameter_signature should be allowed to be
- * \c NULL.  It doesn't seem like much of a hardship for drivers to have to
- * pass in an empty string.
- *
- * \todo
- * Determine if code should be added to reject function names that start with
- * 'glX'.
- * 
- * \bug
- * Add code to compare \c parameter_signature with the parameter signature of
- * a static function.  In order to do that, we need to find a way to \b get
- * the parameter signature of a static function.
- */
-
-PUBLIC int
-_glapi_add_dispatch( const char * const * function_names,
-		     const char * parameter_signature )
-{
-   static int next_dynamic_offset = _gloffset_FIRST_DYNAMIC;
-   const char * const real_sig = (parameter_signature != NULL)
-     ? parameter_signature : "";
-   struct _glapi_function * entry[8];
-   GLboolean is_static[8];
-   unsigned i;
-   unsigned j;
-   int offset = ~0;
-   int new_offset;
-
-
-   (void) memset( is_static, 0, sizeof( is_static ) );
-   (void) memset( entry, 0, sizeof( entry ) );
-
-   for ( i = 0 ; function_names[i] != NULL ; i++ ) {
-      /* Do some trivial validation on the name of the function.
-       */
-
-      if (!function_names[i] || function_names[i][0] != 'g' || function_names[i][1] != 'l')
-	return GL_FALSE;
-   
-      /* 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) {
-	 /* FIXME: Make sure the parameter signatures match!  How do we get
-	  * FIXME: the parameter signature for static functions?
-	  */
-
-	 if ( (offset != ~0) && (new_offset != offset) ) {
-	    return -1;
-	 }
-
-	 is_static[i] = GL_TRUE;
-	 offset = new_offset;
-      }
-   
-   
-      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;
-	 }
-      }
-   }
-
-   if (offset == ~0) {
-      offset = next_dynamic_offset;
-      next_dynamic_offset++;
-   }
-
-   for ( i = 0 ; function_names[i] != NULL ; i++ ) {
-      if (! is_static[i] ) {
-	 if (entry[i] == NULL) {
-	    entry[i] = add_function_name( function_names[i] );
-	    if (entry[i] == NULL) {
-	       /* 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;
-      }
-   }
-   
-   return offset;
-}
-
-
-/**
- * Return offset of entrypoint for named function within dispatch table.
- */
-PUBLIC GLint
-_glapi_get_proc_offset(const char *funcName)
-{
-   /* search extension functions first */
-   GLuint i;
-   for (i = 0; i < NumExtEntryPoints; i++) {
-      if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
-         return ExtEntryTable[i].dispatch_offset;
-      }
-   }
-   /* search static functions */
-   return get_static_proc_offset(funcName);
-}
-
-
-
-/**
- * Return pointer to the named function.  If the function name isn't found
- * in the name of static functions, try generating a new API entrypoint on
- * the fly with assembly language.
- */
-_glapi_proc
-_glapi_get_proc_address(const char *funcName)
-{
-   struct _glapi_function * entry;
-   GLuint i;
-
-#ifdef MANGLE
-   if (funcName[0] != 'm' || funcName[1] != 'g' || funcName[2] != 'l')
-      return NULL;
-#else
-   if (funcName[0] != 'g' || funcName[1] != 'l')
-      return NULL;
-#endif
-
-   /* search extension functions first */
-   for (i = 0; i < NumExtEntryPoints; i++) {
-      if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
-         return ExtEntryTable[i].dispatch_stub;
-      }
-   }
-
-#if !defined( XFree86Server ) && !defined( XGLServer )
-   /* search static functions */
-   {
-      const _glapi_proc func = get_static_proc_address(funcName);
-      if (func)
-         return func;
-   }
-#endif /* !defined( XFree86Server ) */
-
-   entry = add_function_name(funcName);
-   return (entry == NULL) ? NULL : entry->dispatch_stub;
-}
-
-
-
-/**
- * Return the name of the function at the given dispatch offset.
- * This is only intended for debugging.
- */
-const char *
-_glapi_get_proc_name(GLuint offset)
-{
-   GLuint i;
-   const char * n;
-
-   /* search built-in functions */
-   n = get_static_proc_name(offset);
-   if ( n != NULL ) {
-      return n;
-   }
-
-   /* search added extension functions */
-   for (i = 0; i < NumExtEntryPoints; i++) {
-      if (ExtEntryTable[i].dispatch_offset == offset) {
-         return ExtEntryTable[i].name;
-      }
-   }
-   return NULL;
-}
-
-
-
-/**
  * Return size of dispatch table struct as number of functions (or
  * slots).
  */
@@ -944,7 +379,6 @@ _glapi_get_dispatch_table_size(void)
 }
 
 
-
 /**
  * Make sure there are no NULL pointers in the given dispatch table.
  * Intended for debugging purposes.
@@ -952,7 +386,7 @@ _glapi_get_dispatch_table_size(void)
 void
 _glapi_check_table(const struct _glapi_table *table)
 {
-#ifdef DEBUG
+#ifdef EXTRA_DEBUG
    const GLuint entries = _glapi_get_dispatch_table_size();
    const void **tab = (const void **) table;
    GLuint i;
@@ -1023,29 +457,3 @@ _glapi_check_table(const struct _glapi_table *table)
    (void) table;
 #endif
 }
-
-
-#if defined(PTHREADS) || defined(GLX_USE_TLS)
-/**
- * Perform platform-specific GL API entry-point fixups.
- */
-static void
-init_glapi_relocs( void )
-{
-#if defined(USE_X86_ASM) && defined(GLX_USE_TLS) && !defined(GLX_X86_READONLY_TEXT)
-    extern unsigned long _x86_get_dispatch(void);
-    char run_time_patch[] = {
-       0x65, 0xa1, 0, 0, 0, 0 /* movl %gs:0,%eax */
-    };
-    GLuint *offset = (GLuint *) &run_time_patch[2]; /* 32-bits for x86/32 */
-    const GLubyte * const get_disp = (const GLubyte *) run_time_patch;
-    GLubyte * curr_func = (GLubyte *) gl_dispatch_functions_start;
-
-    *offset = _x86_get_dispatch();
-    while ( curr_func != (GLubyte *) gl_dispatch_functions_end ) {
-	(void) memcpy( curr_func, get_disp, sizeof(run_time_patch));
-	curr_func += DISPATCH_FUNCTION_SIZE;
-    }
-#endif
-}
-#endif /* defined(PTHREADS) || defined(GLX_USE_TLS) */
diff --git a/src/mesa/glapi/glapi.h b/src/mesa/glapi/glapi.h
index 20d35769cf8..8f2cf662183 100644
--- a/src/mesa/glapi/glapi.h
+++ b/src/mesa/glapi/glapi.h
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  7.1
  *
- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -44,8 +44,10 @@
 #ifndef _GLAPI_H
 #define _GLAPI_H
 
+#define GL_GLEXT_PROTOTYPES
 
 #include "GL/gl.h"
+#include "GL/glext.h"
 #include "glthread.h"
 
 
@@ -66,6 +68,12 @@ typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...);
 #endif
 
 
+/*
+ * Number of extension functions which we can dynamically add at runtime.
+ */
+#define MAX_EXTENSION_FUNCS 300
+
+
 /**
  ** Define the GET_CURRENT_CONTEXT() macro.
  ** \param C local variable which will hold the current context.
diff --git a/src/mesa/glapi/glapi_getproc.c b/src/mesa/glapi/glapi_getproc.c
new file mode 100644
index 00000000000..b3ecc9d25ad
--- /dev/null
+++ b/src/mesa/glapi/glapi_getproc.c
@@ -0,0 +1,615 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file glapi_getproc.
+ *
+ * Code for implementing glXGetProcAddress(), etc.
+ * This was originally in glapi.c but refactored out.
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+#include "glheader.h"
+#include "glapi.h"
+#include "glapioffsets.h"
+#include "glapitable.h"
+
+
+/**
+ * strdup() is actually not a standard ANSI C or POSIX routine.
+ * Irix will not define it if ANSI mode is in effect.
+ */
+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)
+# define NEED_FUNCTION_POINTER
+#endif
+
+/* The code in this file is auto-generated with Python */
+#include "glprocs.h"
+
+
+/**
+ * Search the table of static entrypoint functions for the named function
+ * and return the corresponding glprocs_table_t entry.
+ */
+static const glprocs_table_t *
+find_entry( 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;
+      if (strcmp(testName, n) == 0) {
+	 return &static_functions[i];
+      }
+   }
+   return NULL;
+}
+
+
+/**
+ * Return dispatch table offset of the named static (built-in) function.
+ * Return -1 if function not found.
+ */
+static GLint
+get_static_proc_offset(const char *funcName)
+{
+   const glprocs_table_t * const f = find_entry( funcName );
+   if (f) {
+      return f->Offset;
+   }
+   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
+
+#endif /* USE_X86_ASM */
+
+
+/**
+ * Return dispatch function address for the named static (built-in) function.
+ * Return NULL if function not found.
+ */
+static _glapi_proc
+get_static_proc_address(const char *funcName)
+{
+   const glprocs_table_t * const f = find_entry( funcName );
+   if (f) {
+#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;
+#elif defined(DISPATCH_FUNCTION_SIZE)
+      return (_glapi_proc) (gl_dispatch_functions_start 
+                            + (DISPATCH_FUNCTION_SIZE * f->Offset));
+#else
+      return f->Address;
+#endif
+   }
+   else {
+      return NULL;
+   }
+}
+
+#endif /* !defined(XFree86Server) && !defined(XGLServer) */
+
+
+
+/**
+ * Return the name of the function at the given offset in the dispatch
+ * table.  For debugging only.
+ */
+static const char *
+get_static_proc_name( GLuint offset )
+{
+   GLuint i;
+   for (i = 0; static_functions[i].Name_offset >= 0; i++) {
+      if (static_functions[i].Offset == offset) {
+	 return gl_string_table + static_functions[i].Name_offset;
+      }
+   }
+   return NULL;
+}
+
+
+
+/**********************************************************************
+ * Extension function management.
+ */
+
+
+/**
+ * Track information about a function added to the GL API.
+ */
+struct _glapi_function {
+   /**
+    * Name of the function.
+    */
+   const char * name;
+
+
+   /**
+    * Text string that describes the types of the parameters passed to the
+    * named function.   Parameter types are converted to characters using the
+    * following rules:
+    *   - 'i' for \c GLint, \c GLuint, and \c GLenum
+    *   - 'p' for any pointer type
+    *   - 'f' for \c GLfloat and \c GLclampf
+    *   - 'd' for \c GLdouble and \c GLclampd
+    */
+   const char * parameter_signature;
+
+
+   /**
+    * Offset in the dispatch table where the pointer to the real function is
+    * located.  If the driver has not requested that the named function be
+    * added to the dispatch table, this will have the value ~0.
+    */
+   unsigned dispatch_offset;
+
+
+   /**
+    * Pointer to the dispatch stub for the named function.
+    * 
+    * \todo
+    * The semantic of this field should be changed slightly.  Currently, it
+    * is always expected to be non-\c NULL.  However, it would be better to
+    * only allocate the entry-point stub when the application requests the
+    * function via \c glXGetProcAddress.  This would save memory for all the
+    * functions that the driver exports but that the application never wants
+    * to call.
+    */
+   _glapi_proc dispatch_stub;
+};
+
+
+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)
+{
+#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);
+
+
+   if ( code != NULL ) {
+      (void) memcpy(code, template_func, DISPATCH_FUNCTION_SIZE);
+      fill_in_entrypoint_offset( (_glapi_proc) code, functionOffset );
+   }
+
+   return (_glapi_proc) code;
+#elif defined(USE_SPARC_ASM)
+
+#ifdef __arch64__
+   static const unsigned int insn_template[] = {
+	   0x05000000,	/* sethi	%uhi(_glapi_Dispatch), %g2	*/
+	   0x03000000,	/* sethi	%hi(_glapi_Dispatch), %g1	*/
+	   0x8410a000,	/* or		%g2, %ulo(_glapi_Dispatch), %g2	*/
+	   0x82106000,	/* or		%g1, %lo(_glapi_Dispatch), %g1	*/
+	   0x8528b020,	/* sllx		%g2, 32, %g2			*/
+	   0xc2584002,	/* ldx		[%g1 + %g2], %g1		*/
+	   0x05000000,	/* sethi	%hi(8 * glapioffset), %g2	*/
+	   0x8410a000,	/* or		%g2, %lo(8 * glapioffset), %g2	*/
+	   0xc6584002,	/* ldx		[%g1 + %g2], %g3		*/
+	   0x81c0c000,	/* jmpl		%g3, %g0			*/
+	   0x01000000	/*  nop						*/
+   };
+#else
+   static const unsigned int insn_template[] = {
+	   0x03000000,	/* sethi	%hi(_glapi_Dispatch), %g1	  */
+	   0xc2006000,	/* ld		[%g1 + %lo(_glapi_Dispatch)], %g1 */
+	   0xc6006000,	/* ld		[%g1 + %lo(4*glapioffset)], %g3	  */
+	   0x81c0c000,	/* jmpl		%g3, %g0			  */
+	   0x01000000	/*  nop						  */
+   };
+#endif /* __arch64__ */
+   unsigned int *code = (unsigned int *) malloc(sizeof(insn_template));
+   unsigned long glapi_addr = (unsigned long) &_glapi_Dispatch;
+   if (code) {
+      memcpy(code, insn_template, sizeof(insn_template));
+
+#ifdef __arch64__
+      code[0] |= (glapi_addr >> (32 + 10));
+      code[1] |= ((glapi_addr & 0xffffffff) >> 10);
+      __glapi_sparc_icache_flush(&code[0]);
+      code[2] |= ((glapi_addr >> 32) & ((1 << 10) - 1));
+      code[3] |= (glapi_addr & ((1 << 10) - 1));
+      __glapi_sparc_icache_flush(&code[2]);
+      code[6] |= ((functionOffset * 8) >> 10);
+      code[7] |= ((functionOffset * 8) & ((1 << 10) - 1));
+      __glapi_sparc_icache_flush(&code[6]);
+#else
+      code[0] |= (glapi_addr >> 10);
+      code[1] |= (glapi_addr & ((1 << 10) - 1));
+      __glapi_sparc_icache_flush(&code[0]);
+      code[2] |= (functionOffset * 4);
+      __glapi_sparc_icache_flush(&code[2]);
+#endif /* __arch64__ */
+   }
+   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.
+ */
+static void
+fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
+{
+#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)
+
+   /* XXX this hasn't been tested! */
+   unsigned int *code = (unsigned int *) entrypoint;
+#ifdef __arch64__
+   code[6] = 0x05000000;  /* sethi	%hi(8 * glapioffset), %g2	*/
+   code[7] = 0x8410a000;  /* or		%g2, %lo(8 * glapioffset), %g2	*/
+   code[6] |= ((offset * 8) >> 10);
+   code[7] |= ((offset * 8) & ((1 << 10) - 1));
+   __glapi_sparc_icache_flush(&code[6]);
+#else /* __arch64__ */
+   code[2] = 0xc6006000;  /* ld		[%g1 + %lo(4*glapioffset)], %g3	  */
+   code[2] |= (offset * 4);
+   __glapi_sparc_icache_flush(&code[2]);
+#endif /* __arch64__ */
+
+#else
+
+   /* an unimplemented architecture */
+   (void) entrypoint;
+   (void) offset;
+
+#endif /* USE_*_ASM */
+}
+
+
+/**
+ * Generate new entrypoint
+ *
+ * Use a temporary dispatch offset of ~0 (i.e. -1).  Later, when the driver
+ * calls \c _glapi_add_dispatch we'll put in the proper offset.  If that
+ * never happens, and the user calls this function, he'll segfault.  That's
+ * what you get when you try calling a GL function that doesn't really exist.
+ * 
+ * \param funcName  Name of the function to create an entry-point for.
+ * 
+ * \sa _glapi_add_entrypoint
+ */
+
+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++;
+      }
+   }
+
+   return entry;
+}
+
+
+/**
+ * Fill-in the dispatch stub for the named function.
+ * 
+ * This function is intended to be called by a hardware driver.  When called,
+ * a dispatch stub may be created created for the function.  A pointer to this
+ * dispatch function will be returned by glXGetProcAddress.
+ *
+ * \param function_names       Array of pointers to function names that should
+ *                             share a common dispatch offset.
+ * \param parameter_signature  String representing the types of the parameters
+ *                             passed to the named function.  Parameter types
+ *                             are converted to characters using the following
+ *                             rules:
+ *                               - 'i' for \c GLint, \c GLuint, and \c GLenum
+ *                               - 'p' for any pointer type
+ *                               - 'f' for \c GLfloat and \c GLclampf
+ *                               - 'd' for \c GLdouble and \c GLclampd
+ *
+ * \returns
+ * The offset in the dispatch table of the named function.  A pointer to the
+ * driver's implementation of the named function should be stored at
+ * \c dispatch_table[\c offset].
+ *
+ * \sa glXGetProcAddress
+ *
+ * \warning
+ * This function can only handle up to 8 names at a time.  As far as I know,
+ * the maximum number of names ever associated with an existing GL function is
+ * 4 (\c glPointParameterfSGIS, \c glPointParameterfEXT,
+ * \c glPointParameterfARB, and \c glPointParameterf), so this should not be
+ * too painful of a limitation.
+ *
+ * \todo
+ * Determine whether or not \c parameter_signature should be allowed to be
+ * \c NULL.  It doesn't seem like much of a hardship for drivers to have to
+ * pass in an empty string.
+ *
+ * \todo
+ * Determine if code should be added to reject function names that start with
+ * 'glX'.
+ * 
+ * \bug
+ * Add code to compare \c parameter_signature with the parameter signature of
+ * a static function.  In order to do that, we need to find a way to \b get
+ * the parameter signature of a static function.
+ */
+
+PUBLIC int
+_glapi_add_dispatch( const char * const * function_names,
+		     const char * parameter_signature )
+{
+   static int next_dynamic_offset = _gloffset_FIRST_DYNAMIC;
+   const char * const real_sig = (parameter_signature != NULL)
+     ? parameter_signature : "";
+   struct _glapi_function * entry[8];
+   GLboolean is_static[8];
+   unsigned i;
+   unsigned j;
+   int offset = ~0;
+   int new_offset;
+
+
+   (void) memset( is_static, 0, sizeof( is_static ) );
+   (void) memset( entry, 0, sizeof( entry ) );
+
+   for ( i = 0 ; function_names[i] != NULL ; i++ ) {
+      /* Do some trivial validation on the name of the function.
+       */
+
+      if (!function_names[i] || function_names[i][0] != 'g' || function_names[i][1] != 'l')
+	return GL_FALSE;
+   
+      /* 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) {
+	 /* FIXME: Make sure the parameter signatures match!  How do we get
+	  * FIXME: the parameter signature for static functions?
+	  */
+
+	 if ( (offset != ~0) && (new_offset != offset) ) {
+	    return -1;
+	 }
+
+	 is_static[i] = GL_TRUE;
+	 offset = new_offset;
+      }
+   
+   
+      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;
+	 }
+      }
+   }
+
+   if (offset == ~0) {
+      offset = next_dynamic_offset;
+      next_dynamic_offset++;
+   }
+
+   for ( i = 0 ; function_names[i] != NULL ; i++ ) {
+      if (! is_static[i] ) {
+	 if (entry[i] == NULL) {
+	    entry[i] = add_function_name( function_names[i] );
+	    if (entry[i] == NULL) {
+	       /* 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;
+      }
+   }
+   
+   return offset;
+}
+
+
+/**
+ * Return offset of entrypoint for named function within dispatch table.
+ */
+PUBLIC GLint
+_glapi_get_proc_offset(const char *funcName)
+{
+   /* search extension functions first */
+   GLuint i;
+   for (i = 0; i < NumExtEntryPoints; i++) {
+      if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
+         return ExtEntryTable[i].dispatch_offset;
+      }
+   }
+   /* search static functions */
+   return get_static_proc_offset(funcName);
+}
+
+
+
+/**
+ * Return pointer to the named function.  If the function name isn't found
+ * in the name of static functions, try generating a new API entrypoint on
+ * the fly with assembly language.
+ */
+_glapi_proc
+_glapi_get_proc_address(const char *funcName)
+{
+   struct _glapi_function * entry;
+   GLuint i;
+
+#ifdef MANGLE
+   if (funcName[0] != 'm' || funcName[1] != 'g' || funcName[2] != 'l')
+      return NULL;
+#else
+   if (funcName[0] != 'g' || funcName[1] != 'l')
+      return NULL;
+#endif
+
+   /* search extension functions first */
+   for (i = 0; i < NumExtEntryPoints; i++) {
+      if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
+         return ExtEntryTable[i].dispatch_stub;
+      }
+   }
+
+#if !defined( XFree86Server ) && !defined( XGLServer )
+   /* search static functions */
+   {
+      const _glapi_proc func = get_static_proc_address(funcName);
+      if (func)
+         return func;
+   }
+#endif /* !defined( XFree86Server ) */
+
+   entry = add_function_name(funcName);
+   return (entry == NULL) ? NULL : entry->dispatch_stub;
+}
+
+
+
+/**
+ * Return the name of the function at the given dispatch offset.
+ * This is only intended for debugging.
+ */
+const char *
+_glapi_get_proc_name(GLuint offset)
+{
+   GLuint i;
+   const char * n;
+
+   /* search built-in functions */
+   n = get_static_proc_name(offset);
+   if ( n != NULL ) {
+      return n;
+   }
+
+   /* search added extension functions */
+   for (i = 0; i < NumExtEntryPoints; i++) {
+      if (ExtEntryTable[i].dispatch_offset == offset) {
+         return ExtEntryTable[i].name;
+      }
+   }
+   return NULL;
+}