From: Chia-I Wu Date: Thu, 22 Apr 2010 07:33:43 +0000 (+0800) Subject: mapi: Add x86 dispatcher. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=56eb5d7e852ab04b45ba09831e2c8fbadcda8c40;p=mesa.git mapi: Add x86 dispatcher. --- diff --git a/src/mapi/mapi/entry.c b/src/mapi/mapi/entry.c index b38df073918..968aa445285 100644 --- a/src/mapi/mapi/entry.c +++ b/src/mapi/mapi/entry.c @@ -26,9 +26,18 @@ * Chia-I Wu */ +#include "entry.h" + +#if defined(USE_X86_ASM) && defined(__GNUC__) +# ifdef GLX_USE_TLS +# include "entry_x86_tls.h" +# else +# include "entry_x86_tsd.h" +# endif +#else + #include #include "u_current.h" -#include "entry.h" #include "table.h" /* C version of the public entries */ @@ -50,3 +59,5 @@ void entry_patch(mapi_func entry, int slot) { } + +#endif /* asm */ diff --git a/src/mapi/mapi/entry_x86_tls.h b/src/mapi/mapi/entry_x86_tls.h new file mode 100644 index 00000000000..de0498181de --- /dev/null +++ b/src/mapi/mapi/entry_x86_tls.h @@ -0,0 +1,120 @@ +/* + * Mesa 3-D graphics library + * Version: 7.9 + * + * Copyright (C) 2010 LunarG Inc. + * + * 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 + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + * + * Authors: + * Chia-I Wu + */ + +#include +#include "u_execmem.h" +#include "u_macros.h" + +__asm__(".text"); + +__asm__("x86_current_tls:\n\t" + "call 1f\n" + "1:\n\t" + "popl %eax\n\t" + "addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %eax\n\t" + "movl _glapi_tls_Dispatch@GOTNTPOFF(%eax), %eax\n\t" + "ret"); + +#ifndef GLX_X86_READONLY_TEXT +__asm__(".section wtext, \"awx\", @progbits\n" + ".balign 16\n" + "x86_entry_start:"); +#endif /* GLX_X86_READONLY_TEXT */ + +#define STUB_ASM_ENTRY(func) \ + ".globl " func "\n" \ + ".type " func ", @function\n" \ + ".balign 16\n" \ + func ":" + +#define STUB_ASM_CODE(slot) \ + "call x86_current_tls\n\t" \ + "movl %gs:(%eax), %eax\n\t" \ + "jmp *(4 * " slot ")(%eax)" + +#define MAPI_TMP_STUB_ASM_GCC +#include "mapi_tmp.h" + +#ifndef GLX_X86_READONLY_TEXT +__asm__(".balign 16\n" + "x86_entry_end:"); +__asm__(".text"); +#endif /* GLX_X86_READONLY_TEXT */ + +extern unsigned long +x86_current_tls(); + +void +entry_patch_public(void) +{ +#ifndef GLX_X86_READONLY_TEXT + extern char x86_entry_start[]; + extern char x86_entry_end[]; + char patch[8] = { + 0x65, 0xa1, 0x00, 0x00, 0x00, 0x00, /* movl %gs:0x0, %eax */ + 0x90, 0x90 /* nop's */ + }; + char *entry; + + *((unsigned long *) (patch + 2)) = x86_current_tls(); + + for (entry = x86_entry_start; entry < x86_entry_end; entry += 16) + memcpy(entry, patch, sizeof(patch)); +#endif +} + +void +entry_patch(mapi_func entry, int slot) +{ + void *code = (void *) entry; + *((unsigned long *) (code + 8)) = slot * sizeof(mapi_func); +} + +mapi_func +entry_generate(int slot) +{ + const char code_templ[16] = { + 0x65, 0xa1, 0x00, 0x00, 0x00, 0x00, /* movl %gs:0x0, %eax */ + 0xff, 0xa0, 0x34, 0x12, 0x00, 0x00, /* jmp *0x1234(%eax) */ + 0x90, 0x90, 0x90, 0x90 /* nop's */ + }; + void *code; + mapi_func entry; + + code = u_execmem_alloc(sizeof(code_templ)); + if (!code) + return NULL; + + memcpy(code, code_templ, sizeof(code_templ)); + + *((unsigned long *) (code + 2)) = x86_current_tls(); + entry = (mapi_func) code; + entry_patch(entry, slot); + + return entry; +} diff --git a/src/mapi/mapi/entry_x86_tsd.h b/src/mapi/mapi/entry_x86_tsd.h new file mode 100644 index 00000000000..d31e0676f07 --- /dev/null +++ b/src/mapi/mapi/entry_x86_tsd.h @@ -0,0 +1,89 @@ +/* + * Mesa 3-D graphics library + * Version: 7.9 + * + * Copyright (C) 2010 LunarG Inc. + * + * 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 + * THE AUTHORS OR COPYRIGHT HOLDERS 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. + * + * Authors: + * Chia-I Wu + */ + +#include +#include "u_execmem.h" +#include "u_macros.h" + +#define X86_ENTRY_SIZE 32 + +__asm__(".text"); + +#define STUB_ASM_ENTRY(func) \ + ".globl " func "\n" \ + ".type " func ", @function\n" \ + ".balign 32\n" \ + func ":" + +#define STUB_ASM_CODE(slot) \ + "movl _glapi_Dispatch, %eax\n\t" \ + "testl %eax, %eax\n\t" \ + "je 1f\n\t" \ + "jmp *(4 * " slot ")(%eax)\n" \ + "1:\n\t" \ + "call _glapi_get_dispatch\n\t" \ + "jmp *(4 * " slot ")(%eax)" + +#define MAPI_TMP_STUB_ASM_GCC +#include "mapi_tmp.h" + +__asm__(".balign 32\n" + "x86_entry_end:"); + +void +entry_patch_public(void) +{ +} + +void +entry_patch(mapi_func entry, int slot) +{ + void *code = (void *) entry; + + *((unsigned long *) (code + 11)) = slot * sizeof(mapi_func); + *((unsigned long *) (code + 22)) = slot * sizeof(mapi_func); +} + +mapi_func +entry_generate(int slot) +{ + extern const char x86_entry_end[]; + const char *code_templ = x86_entry_end - X86_ENTRY_SIZE; + void *code; + mapi_func entry; + + code = u_execmem_alloc(X86_ENTRY_SIZE); + if (!code) + return NULL; + + memcpy(code, code_templ, X86_ENTRY_SIZE); + entry = (mapi_func) code; + entry_patch(entry, slot); + + return entry; +} diff --git a/src/mapi/mapi/mapi_tmp.h b/src/mapi/mapi/mapi_tmp.h index da4e8ae54fa..79beca47d2a 100644 --- a/src/mapi/mapi/mapi_tmp.h +++ b/src/mapi/mapi/mapi_tmp.h @@ -184,3 +184,28 @@ const mapi_func table_noop_array[] = { #endif /* DEBUG */ #undef MAPI_TMP_NOOP_ARRAY #endif /* MAPI_TMP_NOOP_ARRAY */ + + +#ifdef MAPI_TMP_STUB_ASM_GCC +# define STUB_ASM_ALIAS(func, to) \ + ".globl " func "\n" \ + ".set " func ", " to +# define STUB_ASM_HIDE(func) \ + ".hidden " func + +# define MAPI_ABI_ENTRY(ret, name, params) \ + __asm__(STUB_ASM_ENTRY(U_CONCAT_STR(MAPI_ABI_PREFIX, name))); +# define MAPI_ABI_CODE(ret, name, args) \ + __asm__(STUB_ASM_CODE(U_STRINGIFY(MAPI_SLOT_ ## name))); +# define MAPI_ALIAS_ENTRY(alias, ret, name, params) \ + __asm__(STUB_ASM_ALIAS(U_CONCAT_STR(MAPI_ABI_PREFIX, name), \ + U_CONCAT_STR(MAPI_ABI_PREFIX, alias))); +# define MAPI_ABI_ENTRY_HIDDEN(ret, name, params) \ + __asm__(STUB_ASM_HIDE(U_CONCAT_STR(MAPI_ABI_PREFIX, name))); \ + MAPI_ABI_ENTRY(ret, name, params); +# define MAPI_ALIAS_ENTRY_HIDDEN(alias, ret, name, params) \ + __asm__(STUB_ASM_HIDE(U_CONCAT_STR(MAPI_ABI_PREFIX, name))); \ + MAPI_ALIAS_ENTRY(alias, ret, name, params); +# include MAPI_ABI_HEADER +#undef MAPI_TMP_STUB_ASM_GCC +#endif /* MAPI_TMP_STUB_ASM_GCC */