diff options
| -rw-r--r-- | src/mesa/glapi/glapi_entrypoint.c | 331 | ||||
| -rw-r--r-- | src/mesa/glapi/glapi_getproc.c | 297 | ||||
| -rw-r--r-- | src/mesa/glapi/glapi_priv.h | 23 | ||||
| -rw-r--r-- | src/mesa/sources.mak | 1 |
4 files changed, 357 insertions, 295 deletions
diff --git a/src/mesa/glapi/glapi_entrypoint.c b/src/mesa/glapi/glapi_entrypoint.c new file mode 100644 index 00000000000..5e6e5995f24 --- /dev/null +++ b/src/mesa/glapi/glapi_entrypoint.c @@ -0,0 +1,331 @@ +/* + * 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 */ +} diff --git a/src/mesa/glapi/glapi_getproc.c b/src/mesa/glapi/glapi_getproc.c index fbf48f13883..bd930b875d8 100644 --- a/src/mesa/glapi/glapi_getproc.c +++ b/src/mesa/glapi/glapi_getproc.c @@ -44,16 +44,6 @@ #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 @@ -101,18 +91,6 @@ get_static_proc_offset(const char *funcName) } -#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) /** @@ -126,12 +104,10 @@ get_static_proc_address(const char *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)) + ? 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 @@ -163,172 +139,6 @@ get_static_proc_name( GLuint offset ) -#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. */ @@ -388,109 +198,6 @@ struct _glapi_function { 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. diff --git a/src/mesa/glapi/glapi_priv.h b/src/mesa/glapi/glapi_priv.h index 05eda99ccf5..7cd81ee8dca 100644 --- a/src/mesa/glapi/glapi_priv.h +++ b/src/mesa/glapi/glapi_priv.h @@ -40,4 +40,27 @@ extern void init_glapi_relocs_once(void); +extern _glapi_proc +generate_entrypoint(GLuint functionOffset); + + +extern void +fill_in_entrypoint_offset(_glapi_proc entrypoint, GLuint offset); + + +extern _glapi_proc +get_entrypoint_address(GLuint functionOffset); + + +#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 + + #endif diff --git a/src/mesa/sources.mak b/src/mesa/sources.mak index 9f2e4e51575..74885548e5a 100644 --- a/src/mesa/sources.mak +++ b/src/mesa/sources.mak @@ -88,6 +88,7 @@ MAIN_SOURCES = \ GLAPI_SOURCES = \ glapi/glapi.c \ glapi/glapi_dispatch.c \ + glapi/glapi_entrypoint.c \ glapi/glapi_getproc.c \ glapi/glapi_nop.c \ glapi/glthread.c |