svn merge ^/branches/released .

1 files changed, 1093 insertions, 1093 deletions

diff --git a/xorg-server/glx/glapi.c b/xorg-server/glx/glapi.c
index 7c75d2d5a..d95374dd1 100644
--- a/xorg-server/glx/glapi.c
+++ b/xorg-server/glx/glapi.c
@@ -1,1093 +1,1093 @@
-/*
- * 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.
- */
-
-
-/*
- * This file manages the OpenGL API dispatch layer.
- * The dispatch table (struct _glapi_table) is basically just a list
- * of function pointers.
- * There are functions to set/get the current dispatch table for the
- * current thread and to manage registration/dispatch of dynamically
- * added extension functions.
- *
- * It's intended that this file and the other glapi*.[ch] files are
- * flexible enough to be reused in several places:  XFree86, DRI-
- * based libGL.so, and perhaps the SGI SI.
- *
- * NOTE: There are no dependencies on Mesa in this code.
- *
- * Versions (API changes):
- *   2000/02/23  - original version for Mesa 3.3 and XFree86 4.0
- *   2001/01/16  - added dispatch override feature for Mesa 3.5
- *   2002/06/28  - added _glapi_set_warning_func(), Mesa 4.1.
- *   2002/10/01  - _glapi_get_proc_address() will now generate new entrypoints
- *                 itself (using offset ~0).  _glapi_add_entrypoint() can be
- *                 called afterward and it'll fill in the correct dispatch
- *                 offset.  This allows DRI libGL to avoid probing for DRI
- *                 drivers!  No changes to the public glapi interface.
- */
-
-
-
-#ifdef HAVE_DIX_CONFIG_H
-
-#include <dix-config.h>
-#include <X11/Xfuncproto.h>
-#ifdef _MSC_VER
-#define PUBLIC _declspec(dllexport)
-#else
-#define PUBLIC _X_EXPORT
-#endif
-
-#else
-
-#include "glheader.h"
-
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-#ifdef DEBUG
-#include <assert.h>
-#endif
-#include <unistd.h>
-
-#include "glapi.h"
-#include "GL/gl.h"
-#include "GL/glext.h"
-#include "glapitable.h"
-
-#define FIRST_DYNAMIC_OFFSET (sizeof(struct _glapi_table) / sizeof(void *))
-
-/***** BEGIN NO-OP DISPATCH *****/
-
-static GLboolean WarnFlag = GL_FALSE;
-static _glapi_proc 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);
-static void init_glapi_relocs_once( void );
-
-void _GLAPI_EXPORT
-_glapi_noop_enable_warnings(unsigned char enable)
-{
-}
-
-void _GLAPI_EXPORT
-_glapi_set_warning_func(_glapi_proc func)
-{
-}
-
-#ifdef DEBUG
-
-/**
- * Called by each of the no-op GL entrypoints.
- */
-static int
-Warn(const char *func)
-{
-#if !defined(_WIN32_WCE)
-   if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG")) {
-      fprintf(stderr, "GL User Error: gl%s called without a rendering context\n",
-              func);
-   }
-#endif
-   return 0;
-}
-
-
-/**
- * This is called if the user somehow calls an unassigned GL dispatch function.
- */
-static GLint
-NoOpUnused(void)
-{
-   return Warn(" function");
-}
-
-/*
- * Defines for the glapitemp.h functions.
- */
-#define KEYWORD1 static
-#define KEYWORD1_ALT static
-#define KEYWORD2 GLAPIENTRY
-#define NAME(func)  NoOp##func
-#define DISPATCH(func, args, msg)  Warn(#func);
-#define RETURN_DISPATCH(func, args, msg)  Warn(#func); return 0
-
-
-/*
- * Defines for the table of no-op entry points.
- */
-#define TABLE_ENTRY(name) (_glapi_proc) NoOp##name
-
-#else
-
-static int
-NoOpGeneric(void)
-{
-#if !defined(_WIN32_WCE)
-   if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG")) {
-      fprintf(stderr, "GL User Error: calling GL function without a rendering context\n");
-   }
-#endif
-   return 0;
-}
-
-#define TABLE_ENTRY(name) (_glapi_proc) NoOpGeneric
-
-#endif
-
-#define DISPATCH_TABLE_NAME __glapi_noop_table
-#define UNUSED_TABLE_NAME __unused_noop_functions
-
-#include "glapitemp.h"
-
-/***** END NO-OP DISPATCH *****/
-
-
-
-/**
- * \name Current dispatch and current context control variables
- *
- * Depending on whether or not multithreading is support, and the type of
- * support available, several variables are used to store the current context
- * pointer and the current dispatch table pointer.  In the non-threaded case,
- * the variables \c _glapi_Dispatch and \c _glapi_Context are used for this
- * purpose.
- *
- * In the "normal" threaded case, the variables \c _glapi_Dispatch and
- * \c _glapi_Context will be \c NULL if an application is detected as being
- * multithreaded.  Single-threaded applications will use \c _glapi_Dispatch
- * and \c _glapi_Context just like the case without any threading support.
- * When \c _glapi_Dispatch and \c _glapi_Context are \c NULL, the thread state
- * data \c _gl_DispatchTSD and \c ContextTSD are used.  Drivers and the
- * static dispatch functions access these variables via \c _glapi_get_dispatch
- * and \c _glapi_get_context.
- *
- * There is a race condition in setting \c _glapi_Dispatch to \c NULL.  It is
- * possible for the original thread to be setting it at the same instant a new
- * thread, perhaps running on a different processor, is clearing it.  Because
- * of that, \c ThreadSafe, which can only ever be changed to \c GL_TRUE, is
- * used to determine whether or not the application is multithreaded.
- * 
- * In the TLS case, the variables \c _glapi_Dispatch and \c _glapi_Context are
- * hardcoded to \c NULL.  Instead the TLS variables \c _glapi_tls_Dispatch and
- * \c _glapi_tls_Context are used.  Having \c _glapi_Dispatch and
- * \c _glapi_Context be hardcoded to \c NULL maintains binary compatability
- * between TLS enabled loaders and non-TLS DRI drivers.
- */
-/*@{*/
-#if defined(GLX_USE_TLS)
-
-PUBLIC __thread struct _glapi_table * _glapi_tls_Dispatch
-    __attribute__((tls_model("initial-exec")))
-    = (struct _glapi_table *) __glapi_noop_table;
-
-PUBLIC __thread void * _glapi_tls_Context
-    __attribute__((tls_model("initial-exec")));
-
-PUBLIC const struct _glapi_table *_glapi_Dispatch = NULL;
-
-PUBLIC const void *_glapi_Context = NULL;
-
-#else
-
-#if defined(THREADS)
-
-_glthread_TSD _gl_DispatchTSD;           /**< Per-thread dispatch pointer */
-
-static _glthread_TSD ContextTSD;         /**< Per-thread context pointer */
-
-#endif /* defined(THREADS) */
-
-PUBLIC struct _glapi_table *_glapi_Dispatch = (struct _glapi_table *) __glapi_noop_table;
-
-PUBLIC void *_glapi_Context = NULL;
-
-#endif /* defined(GLX_USE_TLS) */
-/*@}*/
-
-
-
-#if defined(THREADS) && !defined(GLX_USE_TLS)
-
-void
-_glapi_init_multithread(void)
-{
-   _glthread_InitTSD(&_gl_DispatchTSD);
-   _glthread_InitTSD(&ContextTSD);
-}
-
-void
-_glapi_destroy_multithread(void)
-{
-#ifdef WIN32_THREADS
-   _glthread_DestroyTSD(&_gl_DispatchTSD);
-   _glthread_DestroyTSD(&ContextTSD);
-#endif
-}
-
-/**
- * Mutex for multithread check.
- */
-#ifdef WIN32_THREADS
-/* _glthread_DECLARE_STATIC_MUTEX is broken on windows.  There will be race! */
-#define CHECK_MULTITHREAD_LOCK()
-#define CHECK_MULTITHREAD_UNLOCK()
-#else
-_glthread_DECLARE_STATIC_MUTEX(ThreadCheckMutex);
-#define CHECK_MULTITHREAD_LOCK() _glthread_LOCK_MUTEX(ThreadCheckMutex)
-#define CHECK_MULTITHREAD_UNLOCK() _glthread_UNLOCK_MUTEX(ThreadCheckMutex)
-#endif
-/**
- * xserver's gl is not multithreaded, we promise.
- */
-PUBLIC void
-_glapi_check_multithread(void)
-{
-}
-#else
-
-void
-_glapi_init_multithread(void) { }
-
-void
-_glapi_destroy_multithread(void) { }
-
-PUBLIC void
-_glapi_check_multithread(void) { }
-
-#endif
-
-
-
-/**
- * Set the current context pointer for this thread.
- * The context pointer is an opaque type which should be cast to
- * void from the real context pointer type.
- */
-void
-_glapi_set_context(void *context)
-{
-#if defined(GLX_USE_TLS)
-   _glapi_tls_Context = context;
-#elif defined(THREADS)
-   _glthread_SetTSD(&ContextTSD, context);
-   _glapi_Context = context;
-#else
-   _glapi_Context = context;
-#endif
-}
-
-
-
-/**
- * Get the current context pointer for this thread.
- * The context pointer is an opaque type which should be cast from
- * void to the real context pointer type.
- */
-void *
-_glapi_get_context(void)
-{
-#if defined(GLX_USE_TLS)
-   return _glapi_tls_Context;
-#else
-   return _glapi_Context;
-#endif
-}
-
-
-
-/**
- * Set the global or per-thread dispatch table pointer.
- * If the dispatch parameter is NULL we'll plug in the no-op dispatch
- * table (__glapi_noop_table).
- */
-void
-_glapi_set_dispatch(struct _glapi_table *dispatch)
-{
-   init_glapi_relocs_once();
-
-   if (dispatch == NULL) {
-      /* use the no-op functions */
-      dispatch = (struct _glapi_table *) __glapi_noop_table;
-   }
-
-#if defined(GLX_USE_TLS)
-   _glapi_tls_Dispatch = dispatch;
-#else
-   _glapi_Dispatch = dispatch;
-#endif
-}
-
-
-
-/**
- * Return pointer to current dispatch table for calling thread.
- */
-struct _glapi_table *
-_glapi_get_dispatch(void)
-{
-#if defined(GLX_USE_TLS)
-   return _glapi_tls_Dispatch;
-#else
-   return _glapi_Dispatch;
-#endif
-}
-
-
-
-/***
- *** The rest of this file is pretty much concerned with GetProcAddress
- *** functionality.
- ***/
-
-#if defined(USE_X86_ASM)
-# if defined(GLX_USE_TLS)
-#  define DISPATCH_FUNCTION_SIZE  16
-# elif defined(THREADS)
-#  define DISPATCH_FUNCTION_SIZE  32
-# else
-#  define DISPATCH_FUNCTION_SIZE  16
-# endif
-#endif
-
-#if defined(USE_X64_64_ASM)
-# if defined(GLX_USE_TLS)
-#  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 *
-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 prefix on the name */
-      if (strcmp(testName, n + 1) == 0)
-#else
-      if (strcmp(testName, n) == 0)
-#endif
-      {
-	 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 = get_static_proc( funcName );
-   if (f == NULL) {
-      return -1;
-   }
-
-   return f->Offset;
-}
-
-
-/**********************************************************************
- * Extension function management.
- */
-
-/**
- * Number of extension functions which we can dynamically add at runtime.
- *
- * Number of extension functions is also subject to the size of backing exec
- * mem we allocate. For the common case of dispatch stubs with size 16 bytes,
- * the two limits will be hit simultaneously. For larger dispatch function
- * sizes, MAX_EXTENSION_FUNCS is effectively reduced.
- */
-#define MAX_EXTENSION_FUNCS 256
-
-
-/**
- * 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;
-
-
-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.
- */
-static char *
-str_dup(const char *str)
-{
-   char *copy;
-   copy = (char*) malloc(strlen(str) + 1);
-   if (!copy)
-      return NULL;
-   strcpy(copy, str);
-   return copy;
-}
-
-
-/**
- * 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;
-   _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;
-}
-
-#if defined(USE_X86_ASM)
-
-/**
- * Perform platform-specific GL API entry-point fixups.
- */
-static void
-init_glapi_relocs( void )
-{
-#if 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
-}
-
-
-/**
- * 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.
- */
-_glapi_proc
-generate_entrypoint(unsigned int functionOffset)
-{
-   /* 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 *) u_execmem_alloc(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;
-}
-
-
-/**
- * This function inserts a new dispatch offset into the assembly language
- * stub that was generated with the preceeding function.
- */
-void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, unsigned int offset)
-{
-   GLubyte * const code = (GLubyte *) entrypoint;
-
-#if defined(GLX_USE_TLS)
-   *((unsigned int *)(code +  8)) = 4 * offset;
-#elif defined(THREADS)
-   *((unsigned int *)(code + 11)) = 4 * offset;
-   *((unsigned int *)(code + 22)) = 4 * offset;
-#else
-   *((unsigned int *)(code +  7)) = 4 * offset;
-#endif
-}
-
-
-#elif defined(USE_SPARC_ASM)
-
-extern void __glapi_sparc_icache_flush(unsigned int *);
-
-static void
-init_glapi_relocs( void )
-{
-#if defined(PTHREADS) || defined(GLX_USE_TLS)
-    static const unsigned int template[] = {
-#ifdef GLX_USE_TLS
-	0x05000000, /* sethi %hi(_glapi_tls_Dispatch), %g2 */
-	0x8730e00a, /* srl %g3, 10, %g3 */
-	0x8410a000, /* or %g2, %lo(_glapi_tls_Dispatch), %g2 */
-#ifdef __arch64__
-	0xc259c002, /* ldx [%g7 + %g2], %g1 */
-	0xc2584003, /* ldx [%g1 + %g3], %g1 */
-#else
-	0xc201c002, /* ld [%g7 + %g2], %g1 */
-	0xc2004003, /* ld [%g1 + %g3], %g1 */
-#endif
-	0x81c04000, /* jmp %g1 */
-	0x01000000, /* nop  */
-#else
-#ifdef __arch64__
-	0x03000000, /* 64-bit 0x00 --> sethi %hh(_glapi_Dispatch), %g1 */
-	0x05000000, /* 64-bit 0x04 --> sethi %lm(_glapi_Dispatch), %g2 */
-	0x82106000, /* 64-bit 0x08 --> or %g1, %hm(_glapi_Dispatch), %g1 */
-	0x8730e00a, /* 64-bit 0x0c --> srl %g3, 10, %g3 */
-	0x83287020, /* 64-bit 0x10 --> sllx %g1, 32, %g1 */
-	0x82004002, /* 64-bit 0x14 --> add %g1, %g2, %g1 */
-	0xc2586000, /* 64-bit 0x18 --> ldx [%g1 + %lo(_glapi_Dispatch)], %g1 */
-#else
-	0x03000000, /* 32-bit 0x00 --> sethi %hi(_glapi_Dispatch), %g1 */
-	0x8730e00a, /* 32-bit 0x04 --> srl %g3, 10, %g3 */
-	0xc2006000, /* 32-bit 0x08 --> ld [%g1 + %lo(_glapi_Dispatch)], %g1 */
-#endif
-	0x80a06000, /*             --> cmp %g1, 0 */
-	0x02800005, /*             --> be +4*5 */
-	0x01000000, /*             -->  nop  */
-#ifdef __arch64__
-	0xc2584003, /* 64-bit      --> ldx [%g1 + %g3], %g1 */
-#else
-	0xc2004003, /* 32-bit      --> ld [%g1 + %g3], %g1 */
-#endif
-	0x81c04000, /*             --> jmp %g1 */
-	0x01000000, /*             --> nop  */
-#ifdef __arch64__
-	0x9de3bf80, /* 64-bit      --> save  %sp, -128, %sp */
-#else
-	0x9de3bfc0, /* 32-bit      --> save  %sp, -64, %sp */
-#endif
-	0xa0100003, /*             --> mov  %g3, %l0 */
-	0x40000000, /*             --> call _glapi_get_dispatch */
-	0x01000000, /*             -->  nop */
-	0x82100008, /*             --> mov %o0, %g1 */
-	0x86100010, /*             --> mov %l0, %g3 */
-	0x10bffff7, /*             --> ba -4*9 */
-	0x81e80000, /*             -->  restore  */
-#endif
-    };
-#ifdef GLX_USE_TLS
-    extern unsigned int __glapi_sparc_tls_stub;
-    extern unsigned long __glapi_sparc_get_dispatch(void);
-    unsigned int *code = &__glapi_sparc_tls_stub;
-    unsigned long dispatch = __glapi_sparc_get_dispatch();
-#else
-    extern unsigned int __glapi_sparc_pthread_stub;
-    unsigned int *code = &__glapi_sparc_pthread_stub;
-    unsigned long dispatch = (unsigned long) &_glapi_Dispatch;
-    unsigned long call_dest = (unsigned long ) &_glapi_get_dispatch;
-    int idx;
-#endif
-
-#ifdef GLX_USE_TLS
-    code[0] = template[0] | (dispatch >> 10);
-    code[1] = template[1];
-    __glapi_sparc_icache_flush(&code[0]);
-    code[2] = template[2] | (dispatch & 0x3ff);
-    code[3] = template[3];
-    __glapi_sparc_icache_flush(&code[2]);
-    code[4] = template[4];
-    code[5] = template[5];
-    __glapi_sparc_icache_flush(&code[4]);
-    code[6] = template[6];
-    __glapi_sparc_icache_flush(&code[6]);
-#else
-#if defined(__arch64__)
-    code[0] = template[0] | (dispatch >> (32 + 10));
-    code[1] = template[1] | ((dispatch & 0xffffffff) >> 10);
-    __glapi_sparc_icache_flush(&code[0]);
-    code[2] = template[2] | ((dispatch >> 32) & 0x3ff);
-    code[3] = template[3];
-    __glapi_sparc_icache_flush(&code[2]);
-    code[4] = template[4];
-    code[5] = template[5];
-    __glapi_sparc_icache_flush(&code[4]);
-    code[6] = template[6] | (dispatch & 0x3ff);
-    idx = 7;
-#else
-    code[0] = template[0] | (dispatch >> 10);
-    code[1] = template[1];
-    __glapi_sparc_icache_flush(&code[0]);
-    code[2] = template[2] | (dispatch & 0x3ff);
-    idx = 3;
-#endif
-    code[idx + 0] = template[idx + 0];
-    __glapi_sparc_icache_flush(&code[idx - 1]);
-    code[idx + 1] = template[idx + 1];
-    code[idx + 2] = template[idx + 2];
-    __glapi_sparc_icache_flush(&code[idx + 1]);
-    code[idx + 3] = template[idx + 3];
-    code[idx + 4] = template[idx + 4];
-    __glapi_sparc_icache_flush(&code[idx + 3]);
-    code[idx + 5] = template[idx + 5];
-    code[idx + 6] = template[idx + 6];
-    __glapi_sparc_icache_flush(&code[idx + 5]);
-    code[idx + 7] = template[idx + 7];
-    code[idx + 8] = template[idx + 8] |
-	    (((call_dest - ((unsigned long) &code[idx + 8]))
-	      >> 2) & 0x3fffffff);
-    __glapi_sparc_icache_flush(&code[idx + 7]);
-    code[idx + 9] = template[idx + 9];
-    code[idx + 10] = template[idx + 10];
-    __glapi_sparc_icache_flush(&code[idx + 9]);
-    code[idx + 11] = template[idx + 11];
-    code[idx + 12] = template[idx + 12];
-    __glapi_sparc_icache_flush(&code[idx + 11]);
-    code[idx + 13] = template[idx + 13];
-    __glapi_sparc_icache_flush(&code[idx + 13]);
-#endif
-#endif
-}
-
-
-_glapi_proc
-generate_entrypoint(GLuint functionOffset)
-{
-#if 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 *) u_execmem_alloc(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 (_glapi_proc) code;
-#endif
-}
-
-
-void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
-{
-   unsigned int *code = (unsigned int *) entrypoint;
-
-   code[0] &= ~0x3fffff;
-   code[0] |= (offset * sizeof(void *)) & 0x3fffff;
-   __glapi_sparc_icache_flush(&code[0]);
-}
-
-
-#else /* USE_*_ASM */
-
-static void
-init_glapi_relocs( void )
-{
-}
-
-
-_glapi_proc
-generate_entrypoint(GLuint functionOffset)
-{
-   (void) functionOffset;
-   return NULL;
-}
-
-
-void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)
-{
-   /* an unimplemented architecture */
-   (void) entrypoint;
-   (void) offset;
-}
-
-#endif /* USE_*_ASM */
-
-
-void
-init_glapi_relocs_once( void )
-{
-#if defined(PTHREADS) || defined(GLX_USE_TLS)
-   static pthread_once_t once_control = PTHREAD_ONCE_INIT;
-   pthread_once( & once_control, init_glapi_relocs );
-#endif
-}
-
-/**
- * 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].  Return -1 if error/problem.
- *
- * \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 = FIRST_DYNAMIC_OFFSET;
-   const char * const real_sig = (parameter_signature != NULL)
-     ? parameter_signature : "";
-   struct _glapi_function * entry[8];
-   GLboolean is_static[8];
-   unsigned i;
-   int offset = ~0;
-
-   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++ ) {
-      const char * funcName = function_names[i];
-      int static_offset;
-      int extension_offset;
-
-      if (funcName[0] != 'g' || funcName[1] != 'l')
-         return -1;
-
-      /* 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) && (static_offset != offset) ) {
-	    return -1;
-	 }
-
-	 offset = static_offset;
-
-	 continue;
-      }
-
-      /* 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]) {
-	 continue;
-      }
-
-      /* generate entrypoints for new function names */
-      if (entry[i] == NULL) {
-	 entry[i] = add_function_name( function_names[i] );
-	 if (entry[i] == NULL) {
-	    /* FIXME: Possible memory leak here. */
-	    return -1;
-	 }
-      }
-
-      if (entry[i]->dispatch_offset == ~0) {
-	 set_entry_info( entry[i], real_sig, offset );
-      }
-   }
-
-   return offset;
-}
-
-/**
- * Return size of dispatch table struct as number of functions (or
- * slots).
- */
-GLuint
-_glapi_get_dispatch_table_size(void)
-{
-   /*
-    * 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.
-    */
-   return FIRST_DYNAMIC_OFFSET + MAX_EXTENSION_FUNCS;
-}
-
+/*

+ * 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.

+ */

+

+

+/*

+ * This file manages the OpenGL API dispatch layer.

+ * The dispatch table (struct _glapi_table) is basically just a list

+ * of function pointers.

+ * There are functions to set/get the current dispatch table for the

+ * current thread and to manage registration/dispatch of dynamically

+ * added extension functions.

+ *

+ * It's intended that this file and the other glapi*.[ch] files are

+ * flexible enough to be reused in several places:  XFree86, DRI-

+ * based libGL.so, and perhaps the SGI SI.

+ *

+ * NOTE: There are no dependencies on Mesa in this code.

+ *

+ * Versions (API changes):

+ *   2000/02/23  - original version for Mesa 3.3 and XFree86 4.0

+ *   2001/01/16  - added dispatch override feature for Mesa 3.5

+ *   2002/06/28  - added _glapi_set_warning_func(), Mesa 4.1.

+ *   2002/10/01  - _glapi_get_proc_address() will now generate new entrypoints

+ *                 itself (using offset ~0).  _glapi_add_entrypoint() can be

+ *                 called afterward and it'll fill in the correct dispatch

+ *                 offset.  This allows DRI libGL to avoid probing for DRI

+ *                 drivers!  No changes to the public glapi interface.

+ */

+

+

+

+#ifdef HAVE_DIX_CONFIG_H

+

+#include <dix-config.h>

+#include <X11/Xfuncproto.h>

+#ifdef _MSC_VER

+#define PUBLIC _declspec(dllexport)

+#else

+#define PUBLIC _X_EXPORT

+#endif

+

+#else

+

+#include "glheader.h"

+

+#endif

+

+#include <stdlib.h>

+#include <string.h>

+#ifdef DEBUG

+#include <assert.h>

+#endif

+#include <unistd.h>

+

+#include "glapi.h"

+#include "GL/gl.h"

+#include "GL/glext.h"

+#include "glapitable.h"

+

+#define FIRST_DYNAMIC_OFFSET (sizeof(struct _glapi_table) / sizeof(void *))

+

+/***** BEGIN NO-OP DISPATCH *****/

+

+static GLboolean WarnFlag = GL_FALSE;

+static _glapi_proc 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);

+static void init_glapi_relocs_once( void );

+

+void _GLAPI_EXPORT

+_glapi_noop_enable_warnings(unsigned char enable)

+{

+}

+

+void _GLAPI_EXPORT

+_glapi_set_warning_func(_glapi_proc func)

+{

+}

+

+#ifdef DEBUG

+

+/**

+ * Called by each of the no-op GL entrypoints.

+ */

+static int

+Warn(const char *func)

+{

+#if !defined(_WIN32_WCE)

+   if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG")) {

+      fprintf(stderr, "GL User Error: gl%s called without a rendering context\n",

+              func);

+   }

+#endif

+   return 0;

+}

+

+

+/**

+ * This is called if the user somehow calls an unassigned GL dispatch function.

+ */

+static GLint

+NoOpUnused(void)

+{

+   return Warn(" function");

+}

+

+/*

+ * Defines for the glapitemp.h functions.

+ */

+#define KEYWORD1 static

+#define KEYWORD1_ALT static

+#define KEYWORD2 GLAPIENTRY

+#define NAME(func)  NoOp##func

+#define DISPATCH(func, args, msg)  Warn(#func);

+#define RETURN_DISPATCH(func, args, msg)  Warn(#func); return 0

+

+

+/*

+ * Defines for the table of no-op entry points.

+ */

+#define TABLE_ENTRY(name) (_glapi_proc) NoOp##name

+

+#else

+

+static int

+NoOpGeneric(void)

+{

+#if !defined(_WIN32_WCE)

+   if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG")) {

+      fprintf(stderr, "GL User Error: calling GL function without a rendering context\n");

+   }

+#endif

+   return 0;

+}

+

+#define TABLE_ENTRY(name) (_glapi_proc) NoOpGeneric

+

+#endif

+

+#define DISPATCH_TABLE_NAME __glapi_noop_table

+#define UNUSED_TABLE_NAME __unused_noop_functions

+

+#include "glapitemp.h"

+

+/***** END NO-OP DISPATCH *****/

+

+

+

+/**

+ * \name Current dispatch and current context control variables

+ *

+ * Depending on whether or not multithreading is support, and the type of

+ * support available, several variables are used to store the current context

+ * pointer and the current dispatch table pointer.  In the non-threaded case,

+ * the variables \c _glapi_Dispatch and \c _glapi_Context are used for this

+ * purpose.

+ *

+ * In the "normal" threaded case, the variables \c _glapi_Dispatch and

+ * \c _glapi_Context will be \c NULL if an application is detected as being

+ * multithreaded.  Single-threaded applications will use \c _glapi_Dispatch

+ * and \c _glapi_Context just like the case without any threading support.

+ * When \c _glapi_Dispatch and \c _glapi_Context are \c NULL, the thread state

+ * data \c _gl_DispatchTSD and \c ContextTSD are used.  Drivers and the

+ * static dispatch functions access these variables via \c _glapi_get_dispatch

+ * and \c _glapi_get_context.

+ *

+ * There is a race condition in setting \c _glapi_Dispatch to \c NULL.  It is

+ * possible for the original thread to be setting it at the same instant a new

+ * thread, perhaps running on a different processor, is clearing it.  Because

+ * of that, \c ThreadSafe, which can only ever be changed to \c GL_TRUE, is

+ * used to determine whether or not the application is multithreaded.

+ * 

+ * In the TLS case, the variables \c _glapi_Dispatch and \c _glapi_Context are

+ * hardcoded to \c NULL.  Instead the TLS variables \c _glapi_tls_Dispatch and

+ * \c _glapi_tls_Context are used.  Having \c _glapi_Dispatch and

+ * \c _glapi_Context be hardcoded to \c NULL maintains binary compatability

+ * between TLS enabled loaders and non-TLS DRI drivers.

+ */

+/*@{*/

+#if defined(GLX_USE_TLS)

+

+PUBLIC TLS struct _glapi_table * _glapi_tls_Dispatch

+    __attribute__((tls_model("initial-exec")))

+    = (struct _glapi_table *) __glapi_noop_table;

+

+PUBLIC TLS void * _glapi_tls_Context

+    __attribute__((tls_model("initial-exec")));

+

+PUBLIC const struct _glapi_table *_glapi_Dispatch = NULL;

+

+PUBLIC const void *_glapi_Context = NULL;

+

+#else

+

+#if defined(THREADS)

+

+_glthread_TSD _gl_DispatchTSD;           /**< Per-thread dispatch pointer */

+

+static _glthread_TSD ContextTSD;         /**< Per-thread context pointer */

+

+#endif /* defined(THREADS) */

+

+PUBLIC struct _glapi_table *_glapi_Dispatch = (struct _glapi_table *) __glapi_noop_table;

+

+PUBLIC void *_glapi_Context = NULL;

+

+#endif /* defined(GLX_USE_TLS) */

+/*@}*/

+

+

+

+#if defined(THREADS) && !defined(GLX_USE_TLS)

+

+void

+_glapi_init_multithread(void)

+{

+   _glthread_InitTSD(&_gl_DispatchTSD);

+   _glthread_InitTSD(&ContextTSD);

+}

+

+void

+_glapi_destroy_multithread(void)

+{

+#ifdef WIN32_THREADS

+   _glthread_DestroyTSD(&_gl_DispatchTSD);

+   _glthread_DestroyTSD(&ContextTSD);

+#endif

+}

+

+/**

+ * Mutex for multithread check.

+ */

+#ifdef WIN32_THREADS

+/* _glthread_DECLARE_STATIC_MUTEX is broken on windows.  There will be race! */

+#define CHECK_MULTITHREAD_LOCK()

+#define CHECK_MULTITHREAD_UNLOCK()

+#else

+_glthread_DECLARE_STATIC_MUTEX(ThreadCheckMutex);

+#define CHECK_MULTITHREAD_LOCK() _glthread_LOCK_MUTEX(ThreadCheckMutex)

+#define CHECK_MULTITHREAD_UNLOCK() _glthread_UNLOCK_MUTEX(ThreadCheckMutex)

+#endif

+/**

+ * xserver's gl is not multithreaded, we promise.

+ */

+PUBLIC void

+_glapi_check_multithread(void)

+{

+}

+#else

+

+void

+_glapi_init_multithread(void) { }

+

+void

+_glapi_destroy_multithread(void) { }

+

+PUBLIC void

+_glapi_check_multithread(void) { }

+

+#endif

+

+

+

+/**

+ * Set the current context pointer for this thread.

+ * The context pointer is an opaque type which should be cast to

+ * void from the real context pointer type.

+ */

+void

+_glapi_set_context(void *context)

+{

+#if defined(GLX_USE_TLS)

+   _glapi_tls_Context = context;

+#elif defined(THREADS)

+   _glthread_SetTSD(&ContextTSD, context);

+   _glapi_Context = context;

+#else

+   _glapi_Context = context;

+#endif

+}

+

+

+

+/**

+ * Get the current context pointer for this thread.

+ * The context pointer is an opaque type which should be cast from

+ * void to the real context pointer type.

+ */

+void *

+_glapi_get_context(void)

+{

+#if defined(GLX_USE_TLS)

+   return _glapi_tls_Context;

+#else

+   return _glapi_Context;

+#endif

+}

+

+

+

+/**

+ * Set the global or per-thread dispatch table pointer.

+ * If the dispatch parameter is NULL we'll plug in the no-op dispatch

+ * table (__glapi_noop_table).

+ */

+void

+_glapi_set_dispatch(struct _glapi_table *dispatch)

+{

+   init_glapi_relocs_once();

+

+   if (dispatch == NULL) {

+      /* use the no-op functions */

+      dispatch = (struct _glapi_table *) __glapi_noop_table;

+   }

+

+#if defined(GLX_USE_TLS)

+   _glapi_tls_Dispatch = dispatch;

+#else

+   _glapi_Dispatch = dispatch;

+#endif

+}

+

+

+

+/**

+ * Return pointer to current dispatch table for calling thread.

+ */

+struct _glapi_table *

+_glapi_get_dispatch(void)

+{

+#if defined(GLX_USE_TLS)

+   return _glapi_tls_Dispatch;

+#else

+   return _glapi_Dispatch;

+#endif

+}

+

+

+

+/***

+ *** The rest of this file is pretty much concerned with GetProcAddress

+ *** functionality.

+ ***/

+

+#if defined(USE_X86_ASM)

+# if defined(GLX_USE_TLS)

+#  define DISPATCH_FUNCTION_SIZE  16

+# elif defined(THREADS)

+#  define DISPATCH_FUNCTION_SIZE  32

+# else

+#  define DISPATCH_FUNCTION_SIZE  16

+# endif

+#endif

+

+#if defined(USE_X64_64_ASM)

+# if defined(GLX_USE_TLS)

+#  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 *

+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 prefix on the name */

+      if (strcmp(testName, n + 1) == 0)

+#else

+      if (strcmp(testName, n) == 0)

+#endif

+      {

+	 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 = get_static_proc( funcName );

+   if (f == NULL) {

+      return -1;

+   }

+

+   return f->Offset;

+}

+

+

+/**********************************************************************

+ * Extension function management.

+ */

+

+/**

+ * Number of extension functions which we can dynamically add at runtime.

+ *

+ * Number of extension functions is also subject to the size of backing exec

+ * mem we allocate. For the common case of dispatch stubs with size 16 bytes,

+ * the two limits will be hit simultaneously. For larger dispatch function

+ * sizes, MAX_EXTENSION_FUNCS is effectively reduced.

+ */

+#define MAX_EXTENSION_FUNCS 256

+

+

+/**

+ * 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;

+

+

+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.

+ */

+static char *

+str_dup(const char *str)

+{

+   char *copy;

+   copy = (char*) malloc(strlen(str) + 1);

+   if (!copy)

+      return NULL;

+   strcpy(copy, str);

+   return copy;

+}

+

+

+/**

+ * 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;

+   _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;

+}

+

+#if defined(USE_X86_ASM)

+

+/**

+ * Perform platform-specific GL API entry-point fixups.

+ */

+static void

+init_glapi_relocs( void )

+{

+#if 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

+}

+

+

+/**

+ * 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.

+ */

+_glapi_proc

+generate_entrypoint(unsigned int functionOffset)

+{

+   /* 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 *) u_execmem_alloc(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;

+}

+

+

+/**

+ * This function inserts a new dispatch offset into the assembly language

+ * stub that was generated with the preceeding function.

+ */

+void

+fill_in_entrypoint_offset(_glapi_proc entrypoint, unsigned int offset)

+{

+   GLubyte * const code = (GLubyte *) entrypoint;

+

+#if defined(GLX_USE_TLS)

+   *((unsigned int *)(code +  8)) = 4 * offset;

+#elif defined(THREADS)

+   *((unsigned int *)(code + 11)) = 4 * offset;

+   *((unsigned int *)(code + 22)) = 4 * offset;

+#else

+   *((unsigned int *)(code +  7)) = 4 * offset;

+#endif

+}

+

+

+#elif defined(USE_SPARC_ASM)

+

+extern void __glapi_sparc_icache_flush(unsigned int *);

+

+static void

+init_glapi_relocs( void )

+{

+#if defined(PTHREADS) || defined(GLX_USE_TLS)

+    static const unsigned int template[] = {

+#ifdef GLX_USE_TLS

+	0x05000000, /* sethi %hi(_glapi_tls_Dispatch), %g2 */

+	0x8730e00a, /* srl %g3, 10, %g3 */

+	0x8410a000, /* or %g2, %lo(_glapi_tls_Dispatch), %g2 */

+#ifdef __arch64__

+	0xc259c002, /* ldx [%g7 + %g2], %g1 */

+	0xc2584003, /* ldx [%g1 + %g3], %g1 */

+#else

+	0xc201c002, /* ld [%g7 + %g2], %g1 */

+	0xc2004003, /* ld [%g1 + %g3], %g1 */

+#endif

+	0x81c04000, /* jmp %g1 */

+	0x01000000, /* nop  */

+#else

+#ifdef __arch64__

+	0x03000000, /* 64-bit 0x00 --> sethi %hh(_glapi_Dispatch), %g1 */

+	0x05000000, /* 64-bit 0x04 --> sethi %lm(_glapi_Dispatch), %g2 */

+	0x82106000, /* 64-bit 0x08 --> or %g1, %hm(_glapi_Dispatch), %g1 */

+	0x8730e00a, /* 64-bit 0x0c --> srl %g3, 10, %g3 */

+	0x83287020, /* 64-bit 0x10 --> sllx %g1, 32, %g1 */

+	0x82004002, /* 64-bit 0x14 --> add %g1, %g2, %g1 */

+	0xc2586000, /* 64-bit 0x18 --> ldx [%g1 + %lo(_glapi_Dispatch)], %g1 */

+#else

+	0x03000000, /* 32-bit 0x00 --> sethi %hi(_glapi_Dispatch), %g1 */

+	0x8730e00a, /* 32-bit 0x04 --> srl %g3, 10, %g3 */

+	0xc2006000, /* 32-bit 0x08 --> ld [%g1 + %lo(_glapi_Dispatch)], %g1 */

+#endif

+	0x80a06000, /*             --> cmp %g1, 0 */

+	0x02800005, /*             --> be +4*5 */

+	0x01000000, /*             -->  nop  */

+#ifdef __arch64__

+	0xc2584003, /* 64-bit      --> ldx [%g1 + %g3], %g1 */

+#else

+	0xc2004003, /* 32-bit      --> ld [%g1 + %g3], %g1 */

+#endif

+	0x81c04000, /*             --> jmp %g1 */

+	0x01000000, /*             --> nop  */

+#ifdef __arch64__

+	0x9de3bf80, /* 64-bit      --> save  %sp, -128, %sp */

+#else

+	0x9de3bfc0, /* 32-bit      --> save  %sp, -64, %sp */

+#endif

+	0xa0100003, /*             --> mov  %g3, %l0 */

+	0x40000000, /*             --> call _glapi_get_dispatch */

+	0x01000000, /*             -->  nop */

+	0x82100008, /*             --> mov %o0, %g1 */

+	0x86100010, /*             --> mov %l0, %g3 */

+	0x10bffff7, /*             --> ba -4*9 */

+	0x81e80000, /*             -->  restore  */

+#endif

+    };

+#ifdef GLX_USE_TLS

+    extern unsigned int __glapi_sparc_tls_stub;

+    extern unsigned long __glapi_sparc_get_dispatch(void);

+    unsigned int *code = &__glapi_sparc_tls_stub;

+    unsigned long dispatch = __glapi_sparc_get_dispatch();

+#else

+    extern unsigned int __glapi_sparc_pthread_stub;

+    unsigned int *code = &__glapi_sparc_pthread_stub;

+    unsigned long dispatch = (unsigned long) &_glapi_Dispatch;

+    unsigned long call_dest = (unsigned long ) &_glapi_get_dispatch;

+    int idx;

+#endif

+

+#ifdef GLX_USE_TLS

+    code[0] = template[0] | (dispatch >> 10);

+    code[1] = template[1];

+    __glapi_sparc_icache_flush(&code[0]);

+    code[2] = template[2] | (dispatch & 0x3ff);

+    code[3] = template[3];

+    __glapi_sparc_icache_flush(&code[2]);

+    code[4] = template[4];

+    code[5] = template[5];

+    __glapi_sparc_icache_flush(&code[4]);

+    code[6] = template[6];

+    __glapi_sparc_icache_flush(&code[6]);

+#else

+#if defined(__arch64__)

+    code[0] = template[0] | (dispatch >> (32 + 10));

+    code[1] = template[1] | ((dispatch & 0xffffffff) >> 10);

+    __glapi_sparc_icache_flush(&code[0]);

+    code[2] = template[2] | ((dispatch >> 32) & 0x3ff);

+    code[3] = template[3];

+    __glapi_sparc_icache_flush(&code[2]);

+    code[4] = template[4];

+    code[5] = template[5];

+    __glapi_sparc_icache_flush(&code[4]);

+    code[6] = template[6] | (dispatch & 0x3ff);

+    idx = 7;

+#else

+    code[0] = template[0] | (dispatch >> 10);

+    code[1] = template[1];

+    __glapi_sparc_icache_flush(&code[0]);

+    code[2] = template[2] | (dispatch & 0x3ff);

+    idx = 3;

+#endif

+    code[idx + 0] = template[idx + 0];

+    __glapi_sparc_icache_flush(&code[idx - 1]);

+    code[idx + 1] = template[idx + 1];

+    code[idx + 2] = template[idx + 2];

+    __glapi_sparc_icache_flush(&code[idx + 1]);

+    code[idx + 3] = template[idx + 3];

+    code[idx + 4] = template[idx + 4];

+    __glapi_sparc_icache_flush(&code[idx + 3]);

+    code[idx + 5] = template[idx + 5];

+    code[idx + 6] = template[idx + 6];

+    __glapi_sparc_icache_flush(&code[idx + 5]);

+    code[idx + 7] = template[idx + 7];

+    code[idx + 8] = template[idx + 8] |

+	    (((call_dest - ((unsigned long) &code[idx + 8]))

+	      >> 2) & 0x3fffffff);

+    __glapi_sparc_icache_flush(&code[idx + 7]);

+    code[idx + 9] = template[idx + 9];

+    code[idx + 10] = template[idx + 10];

+    __glapi_sparc_icache_flush(&code[idx + 9]);

+    code[idx + 11] = template[idx + 11];

+    code[idx + 12] = template[idx + 12];

+    __glapi_sparc_icache_flush(&code[idx + 11]);

+    code[idx + 13] = template[idx + 13];

+    __glapi_sparc_icache_flush(&code[idx + 13]);

+#endif

+#endif

+}

+

+

+_glapi_proc

+generate_entrypoint(GLuint functionOffset)

+{

+#if 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 *) u_execmem_alloc(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 (_glapi_proc) code;

+#endif

+}

+

+

+void

+fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)

+{

+   unsigned int *code = (unsigned int *) entrypoint;

+

+   code[0] &= ~0x3fffff;

+   code[0] |= (offset * sizeof(void *)) & 0x3fffff;

+   __glapi_sparc_icache_flush(&code[0]);

+}

+

+

+#else /* USE_*_ASM */

+

+static void

+init_glapi_relocs( void )

+{

+}

+

+

+_glapi_proc

+generate_entrypoint(GLuint functionOffset)

+{

+   (void) functionOffset;

+   return NULL;

+}

+

+

+void

+fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset)

+{

+   /* an unimplemented architecture */

+   (void) entrypoint;

+   (void) offset;

+}

+

+#endif /* USE_*_ASM */

+

+

+void

+init_glapi_relocs_once( void )

+{

+#if defined(PTHREADS) || defined(GLX_USE_TLS)

+   static pthread_once_t once_control = PTHREAD_ONCE_INIT;

+   pthread_once( & once_control, init_glapi_relocs );

+#endif

+}

+

+/**

+ * 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].  Return -1 if error/problem.

+ *

+ * \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 = FIRST_DYNAMIC_OFFSET;

+   const char * const real_sig = (parameter_signature != NULL)

+     ? parameter_signature : "";

+   struct _glapi_function * entry[8];

+   GLboolean is_static[8];

+   unsigned i;

+   int offset = ~0;

+

+   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++ ) {

+      const char * funcName = function_names[i];

+      int static_offset;

+      int extension_offset;

+

+      if (funcName[0] != 'g' || funcName[1] != 'l')

+         return -1;

+

+      /* 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) && (static_offset != offset) ) {

+	    return -1;

+	 }

+

+	 offset = static_offset;

+

+	 continue;

+      }

+

+      /* 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]) {

+	 continue;

+      }

+

+      /* generate entrypoints for new function names */

+      if (entry[i] == NULL) {

+	 entry[i] = add_function_name( function_names[i] );

+	 if (entry[i] == NULL) {

+	    /* FIXME: Possible memory leak here. */

+	    return -1;

+	 }

+      }

+

+      if (entry[i]->dispatch_offset == ~0) {

+	 set_entry_info( entry[i], real_sig, offset );

+      }

+   }

+

+   return offset;

+}

+

+/**

+ * Return size of dispatch table struct as number of functions (or

+ * slots).

+ */

+GLuint

+_glapi_get_dispatch_table_size(void)

+{

+   /*

+    * 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.

+    */

+   return FIRST_DYNAMIC_OFFSET + MAX_EXTENSION_FUNCS;

+}

+