#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#define PUBLIC
#else
#include "glheader.h"
#endif
#include <stdlib.h>
#include <string.h>
#ifdef DEBUG
#include <assert.h>
#endif
#include "glapi.h"
#include "glapioffsets.h"
#include "glapitable.h"
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);
PUBLIC void
_glapi_noop_enable_warnings(GLboolean enable)
{
WarnFlag = enable;
}
PUBLIC void
_glapi_set_warning_func( _glapi_warning_func func )
{
warning_func = func;
}
static GLboolean
warn(void)
{
if ((WarnFlag || getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG"))
&& warning_func) {
return GL_TRUE;
}
else {
return GL_FALSE;
}
}
#define KEYWORD1 static
#define KEYWORD1_ALT static
#define KEYWORD2 GLAPIENTRY
#define NAME(func) NoOp##func
#define F NULL
#define DISPATCH(func, args, msg) \
if (warn()) { \
warning_func(NULL, "GL User Error: called without context: %s", #func); \
}
#define RETURN_DISPATCH(func, args, msg) \
if (warn()) { \
warning_func(NULL, "GL User Error: called without context: %s", #func); \
} \
return 0
#define DISPATCH_TABLE_NAME __glapi_noop_table
#define UNUSED_TABLE_NAME __unused_noop_functions
#define TABLE_ENTRY(name) (_glapi_proc) NoOp##name
static GLint NoOpUnused(void)
{
if (warn()) {
warning_func(NULL, "GL User Error: calling extension function without a current context\n");
}
return 0;
}
#include "glapitemp.h"
#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)
static GLboolean ThreadSafe = GL_FALSE;
_glthread_TSD _gl_DispatchTSD;
static _glthread_TSD ContextTSD;
#if defined(WIN32_THREADS)
void FreeTSD(_glthread_TSD *p);
void FreeAllTSD(void)
{
FreeTSD(&_gl_DispatchTSD);
FreeTSD(&ContextTSD);
}
#endif
#endif
PUBLIC struct _glapi_table *_glapi_Dispatch =
(struct _glapi_table *) __glapi_noop_table;
PUBLIC void *_glapi_Context = NULL;
#endif
static char *
str_dup(const char *str)
{
char *copy;
copy = (char*) malloc(strlen(str) + 1);
if (!copy)
return NULL;
strcpy(copy, str);
return copy;
}
void
_glapi_check_multithread(void)
{
#if defined(THREADS) && !defined(GLX_USE_TLS)
if (!ThreadSafe) {
static unsigned long knownID;
static GLboolean firstCall = GL_TRUE;
if (firstCall) {
knownID = _glthread_GetID();
firstCall = GL_FALSE;
}
else if (knownID != _glthread_GetID()) {
ThreadSafe = GL_TRUE;
_glapi_set_dispatch(NULL);
_glapi_set_context(NULL);
}
}
else if (!_glapi_get_dispatch()) {
_glapi_set_dispatch(NULL);
}
#endif
}
PUBLIC void
_glapi_set_context(void *context)
{
(void) __unused_noop_functions;
#if defined(GLX_USE_TLS)
_glapi_tls_Context = context;
#elif defined(THREADS)
_glthread_SetTSD(&ContextTSD, context);
_glapi_Context = (ThreadSafe) ? NULL : context;
#else
_glapi_Context = context;
#endif
}
PUBLIC void *
_glapi_get_context(void)
{
#if defined(GLX_USE_TLS)
return _glapi_tls_Context;
#elif defined(THREADS)
if (ThreadSafe) {
return _glthread_GetTSD(&ContextTSD);
}
else {
return _glapi_Context;
}
#else
return _glapi_Context;
#endif
}
PUBLIC void
_glapi_set_dispatch(struct _glapi_table *dispatch)
{
#if defined(PTHREADS) || defined(GLX_USE_TLS)
static pthread_once_t once_control = PTHREAD_ONCE_INIT;
pthread_once( & once_control, init_glapi_relocs );
#endif
if (!dispatch) {
dispatch = (struct _glapi_table *) __glapi_noop_table;
}
#ifdef DEBUG
else {
_glapi_check_table(dispatch);
}
#endif
#if defined(GLX_USE_TLS)
_glapi_tls_Dispatch = dispatch;
#elif defined(THREADS)
_glthread_SetTSD(&_gl_DispatchTSD, (void *) dispatch);
_glapi_Dispatch = (ThreadSafe) ? NULL : dispatch;
#else
_glapi_Dispatch = dispatch;
#endif
}
PUBLIC struct _glapi_table *
_glapi_get_dispatch(void)
{
struct _glapi_table * api;
#if defined(GLX_USE_TLS)
api = _glapi_tls_Dispatch;
#elif defined(THREADS)
api = (ThreadSafe)
? (struct _glapi_table *) _glthread_GetTSD(&_gl_DispatchTSD)
: _glapi_Dispatch;
#else
api = _glapi_Dispatch;
#endif
return api;
}
#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
#include "glprocs.h"
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;
}
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
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
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;
}
#define MAX_EXTENSION_FUNCS 300
#define DISPATCH_TABLE_SIZE (sizeof(struct _glapi_table) / sizeof(void *) + MAX_EXTENSION_FUNCS)
struct _glapi_function {
const char * name;
const char * parameter_signature;
unsigned dispatch_offset;
_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
static _glapi_proc
generate_entrypoint(GLuint functionOffset)
{
#if defined(USE_X86_ASM)
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,
0x03000000,
0x8410a000,
0x82106000,
0x8528b020,
0xc2584002,
0x05000000,
0x8410a000,
0xc6584002,
0x81c0c000,
0x01000000
};
#else
static const unsigned int insn_template[] = {
0x03000000,
0xc2006000,
0xc6006000,
0x81c0c000,
0x01000000
};
#endif
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
}
return (_glapi_proc) code;
#else
(void) functionOffset;
return NULL;
#endif
}
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)
unsigned int *code = (unsigned int *) entrypoint;
#ifdef __arch64__
code[6] = 0x05000000;
code[7] = 0x8410a000;
code[6] |= ((offset * 8) >> 10);
code[7] |= ((offset * 8) & ((1 << 10) - 1));
__glapi_sparc_icache_flush(&code[6]);
#else
code[2] = 0xc6006000;
code[2] |= (offset * 4);
__glapi_sparc_icache_flush(&code[2]);
#endif
#else
(void) entrypoint;
(void) offset;
#endif
}
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;
}
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++ ) {
if (!function_names[i] || function_names[i][0] != 'g' || function_names[i][1] != 'l')
return GL_FALSE;
new_offset = get_static_proc_offset(function_names[i]);
if (new_offset >= 0) {
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) {
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) {
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;
}
PUBLIC GLint
_glapi_get_proc_offset(const char *funcName)
{
GLuint i;
for (i = 0; i < NumExtEntryPoints; i++) {
if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
return ExtEntryTable[i].dispatch_offset;
}
}
return get_static_proc_offset(funcName);
}
_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
for (i = 0; i < NumExtEntryPoints; i++) {
if (strcmp(ExtEntryTable[i].name, funcName) == 0) {
return ExtEntryTable[i].dispatch_stub;
}
}
#if !defined( XFree86Server ) && !defined( XGLServer )
{
const _glapi_proc func = get_static_proc_address(funcName);
if (func)
return func;
}
#endif
entry = add_function_name(funcName);
return (entry == NULL) ? NULL : entry->dispatch_stub;
}
const char *
_glapi_get_proc_name(GLuint offset)
{
GLuint i;
const char * n;
n = get_static_proc_name(offset);
if ( n != NULL ) {
return n;
}
for (i = 0; i < NumExtEntryPoints; i++) {
if (ExtEntryTable[i].dispatch_offset == offset) {
return ExtEntryTable[i].name;
}
}
return NULL;
}
PUBLIC GLuint
_glapi_get_dispatch_table_size(void)
{
return DISPATCH_TABLE_SIZE;
}
void
_glapi_check_table(const struct _glapi_table *table)
{
#ifdef DEBUG
const GLuint entries = _glapi_get_dispatch_table_size();
const void **tab = (const void **) table;
GLuint i;
for (i = 1; i < entries; i++) {
assert(tab[i]);
}
{
GLuint BeginOffset = _glapi_get_proc_offset("glBegin");
char *BeginFunc = (char*) &table->Begin;
GLuint offset = (BeginFunc - (char *) table) / sizeof(void *);
assert(BeginOffset == _gloffset_Begin);
assert(BeginOffset == offset);
}
{
GLuint viewportOffset = _glapi_get_proc_offset("glViewport");
char *viewportFunc = (char*) &table->Viewport;
GLuint offset = (viewportFunc - (char *) table) / sizeof(void *);
assert(viewportOffset == _gloffset_Viewport);
assert(viewportOffset == offset);
}
{
GLuint VertexPointerOffset = _glapi_get_proc_offset("glVertexPointer");
char *VertexPointerFunc = (char*) &table->VertexPointer;
GLuint offset = (VertexPointerFunc - (char *) table) / sizeof(void *);
assert(VertexPointerOffset == _gloffset_VertexPointer);
assert(VertexPointerOffset == offset);
}
{
GLuint ResetMinMaxOffset = _glapi_get_proc_offset("glResetMinmax");
char *ResetMinMaxFunc = (char*) &table->ResetMinmax;
GLuint offset = (ResetMinMaxFunc - (char *) table) / sizeof(void *);
assert(ResetMinMaxOffset == _gloffset_ResetMinmax);
assert(ResetMinMaxOffset == offset);
}
{
GLuint blendColorOffset = _glapi_get_proc_offset("glBlendColor");
char *blendColorFunc = (char*) &table->BlendColor;
GLuint offset = (blendColorFunc - (char *) table) / sizeof(void *);
assert(blendColorOffset == _gloffset_BlendColor);
assert(blendColorOffset == offset);
}
{
GLuint secondaryColor3fOffset = _glapi_get_proc_offset("glSecondaryColor3fEXT");
char *secondaryColor3fFunc = (char*) &table->SecondaryColor3fEXT;
GLuint offset = (secondaryColor3fFunc - (char *) table) / sizeof(void *);
assert(secondaryColor3fOffset == _gloffset_SecondaryColor3fEXT);
assert(secondaryColor3fOffset == offset);
}
{
GLuint pointParameterivOffset = _glapi_get_proc_offset("glPointParameterivNV");
char *pointParameterivFunc = (char*) &table->PointParameterivNV;
GLuint offset = (pointParameterivFunc - (char *) table) / sizeof(void *);
assert(pointParameterivOffset == _gloffset_PointParameterivNV);
assert(pointParameterivOffset == offset);
}
{
GLuint setFenceOffset = _glapi_get_proc_offset("glSetFenceNV");
char *setFenceFunc = (char*) &table->SetFenceNV;
GLuint offset = (setFenceFunc - (char *) table) / sizeof(void *);
assert(setFenceOffset == _gloffset_SetFenceNV);
assert(setFenceOffset == offset);
}
#else
(void) table;
#endif
}
#if defined(PTHREADS) || defined(GLX_USE_TLS)
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
};
GLuint *offset = (GLuint *) &run_time_patch[2];
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