--- /dev/null
+/*
+ * 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_entrypoint.c
+ *
+ * Arch-specific code for manipulating GL API entrypoints (dispatch stubs).
+ */
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#include "glapi/mesa.h"
+#else
+#include "main/glheader.h"
+#include "main/compiler.h"
+#endif
+
+#include "glapi/glapi.h"
+#include "glapi/glapi_priv.h"
+
+
+#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 */
+
+
+#if defined(DISPATCH_FUNCTION_SIZE)
+
+_glapi_proc
+get_entrypoint_address(GLuint functionOffset)
+{
+ return (_glapi_proc) (gl_dispatch_functions_start
+ + (DISPATCH_FUNCTION_SIZE * functionOffset));
+}
+
+#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
+#ifdef USE_SPARC_ASM
+ extern void __glapi_sparc_icache_flush(unsigned int *);
+ 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
+
+#if defined(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
+}
+
+void
+init_glapi_relocs_once( void )
+{
+ static pthread_once_t once_control = PTHREAD_ONCE_INIT;
+ pthread_once( & once_control, init_glapi_relocs );
+}
+
+#else
+
+void
+init_glapi_relocs_once( void ) { }
+
+#endif /* defined(PTHREADS) || defined(GLX_USE_TLS) */
+
+
+#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.
+ */
+_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)
+
+#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 *) malloc(sizeof(template));
+ if (code) {
+ code[0] = template[0] | (functionOffset & 0x3fffff);
+ code[1] = template[1];
+ __glapi_sparc_icache_flush(&code[0]);
+ code[2] = template[2] |
+ (((call_dest - ((unsigned long) &code[2]))
+ >> 2) & 0x3fffffff);
+ code[3] = template[3];
+ __glapi_sparc_icache_flush(&code[2]);
+ }
+ return (_glapi_proc) code;
+#endif
+
+#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.
+ */
+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;
+ code[0] &= ~0x3fffff;
+ code[0] |= (offset * sizeof(void *)) & 0x3fffff;
+ __glapi_sparc_icache_flush(&code[0]);
+#else
+
+ /* an unimplemented architecture */
+ (void) entrypoint;
+ (void) offset;
+
+#endif /* USE_*_ASM */
+}
#include "glapi/glapioffsets.h"
-#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)
# define NEED_FUNCTION_POINTER
#endif
}
-#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 */
-
-
#if !defined(XFree86Server)
/**
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))
+ ? get_entrypoint_address(f->Offset)
: f->Address;
#elif defined(DISPATCH_FUNCTION_SIZE)
- return (_glapi_proc) (gl_dispatch_functions_start
- + (DISPATCH_FUNCTION_SIZE * f->Offset));
+ return get_entrypoint_address(f->Offset);
#else
return f->Address;
#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
-#ifdef USE_SPARC_ASM
- extern void __glapi_sparc_icache_flush(unsigned int *);
- 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
-
-#if defined(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
-}
-
-void
-init_glapi_relocs_once( void )
-{
- static pthread_once_t once_control = PTHREAD_ONCE_INIT;
- pthread_once( & once_control, init_glapi_relocs );
-}
-
-#else
-
-void
-init_glapi_relocs_once( void ) { }
-
-#endif /* defined(PTHREADS) || defined(GLX_USE_TLS) */
-
-
-
/**********************************************************************
* Extension function management.
*/
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 void
-fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset);
-
-/**
- * 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)
-
-#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 *) malloc(sizeof(template));
- if (code) {
- code[0] = template[0] | (functionOffset & 0x3fffff);
- code[1] = template[1];
- __glapi_sparc_icache_flush(&code[0]);
- code[2] = template[2] |
- (((call_dest - ((unsigned long) &code[2]))
- >> 2) & 0x3fffffff);
- code[3] = template[3];
- __glapi_sparc_icache_flush(&code[2]);
- }
- return (_glapi_proc) code;
-#endif
-
-#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)
- unsigned int *code = (unsigned int *) entrypoint;
- code[0] &= ~0x3fffff;
- code[0] |= (offset * sizeof(void *)) & 0x3fffff;
- __glapi_sparc_icache_flush(&code[0]);
-#else
-
- /* an unimplemented architecture */
- (void) entrypoint;
- (void) offset;
-
-#endif /* USE_*_ASM */
-}
-
/**
* strdup() is actually not a standard ANSI C or POSIX routine.
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