diff options
Diffstat (limited to 'mesalib/src/mapi/mapi/entry_x86-64_tls.h')
| -rw-r--r-- | mesalib/src/mapi/mapi/entry_x86-64_tls.h | 244 |
1 files changed, 124 insertions, 120 deletions
diff --git a/mesalib/src/mapi/mapi/entry_x86-64_tls.h b/mesalib/src/mapi/mapi/entry_x86-64_tls.h index 6768afb61..d3b606c8a 100644 --- a/mesalib/src/mapi/mapi/entry_x86-64_tls.h +++ b/mesalib/src/mapi/mapi/entry_x86-64_tls.h @@ -1,120 +1,124 @@ -/*
- * 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 <olv@lunarg.com>
- */
-
-#include <string.h>
-#include "u_execmem.h"
-#include "u_macros.h"
-
-#ifdef __linux__
-__asm__(".section .note.ABI-tag, \"a\"\n\t"
- ".p2align 2\n\t"
- ".long 1f - 0f\n\t" /* name length */
- ".long 3f - 2f\n\t" /* data length */
- ".long 1\n\t" /* note length */
- "0: .asciz \"GNU\"\n\t" /* vendor name */
- "1: .p2align 2\n\t"
- "2: .long 0\n\t" /* note data: the ABI tag */
- ".long 2,4,20\n\t" /* Minimum kernel version w/TLS */
- "3: .p2align 2\n\t"); /* pad out section */
-#endif /* __linux__ */
-
-__asm__(".text");
-
-__asm__("x86_64_current_tls:\n\t"
- "movq u_current_table@GOTTPOFF(%rip), %rax\n\t"
- "ret");
-
-__asm__(".balign 32\n"
- "x86_64_entry_start:");
-
-#define STUB_ASM_ENTRY(func) \
- ".globl " func "\n" \
- ".type " func ", @function\n" \
- ".balign 32\n" \
- func ":"
-
-#define STUB_ASM_CODE(slot) \
- "movq u_current_table@GOTTPOFF(%rip), %rax\n\t" \
- "movq %fs:(%rax), %r11\n\t" \
- "jmp *(8 * " slot ")(%r11)"
-
-#define MAPI_TMP_STUB_ASM_GCC
-#include "mapi_tmp.h"
-
-extern unsigned long
-x86_64_current_tls();
-
-void
-entry_patch_public(void)
-{
-}
-
-mapi_func
-entry_get_public(int slot)
-{
- extern char x86_64_entry_start[];
- return (mapi_func) (x86_64_entry_start + slot * 32);
-}
-
-void
-entry_patch(mapi_func entry, int slot)
-{
- char *code = (char *) entry;
- *((unsigned int *) (code + 12)) = slot * sizeof(mapi_func);
-}
-
-mapi_func
-entry_generate(int slot)
-{
- const char code_templ[16] = {
- /* movq %fs:0, %r11 */
- 0x64, 0x4c, 0x8b, 0x1c, 0x25, 0x00, 0x00, 0x00, 0x00,
- /* jmp *0x1234(%r11) */
- 0x41, 0xff, 0xa3, 0x34, 0x12, 0x00, 0x00,
- };
- unsigned long addr;
- void *code;
- mapi_func entry;
-
- addr = x86_64_current_tls();
- if ((addr >> 32) != 0xffffffff)
- return NULL;
- addr &= 0xffffffff;
-
- code = u_execmem_alloc(sizeof(code_templ));
- if (!code)
- return NULL;
-
- memcpy(code, code_templ, sizeof(code_templ));
-
- *((unsigned int *) (code + 5)) = addr;
- entry = (mapi_func) code;
- entry_patch(entry, slot);
-
- return entry;
-}
+/* + * 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 <olv@lunarg.com> + */ + +#include "u_macros.h" + +#ifdef __linux__ +__asm__(".section .note.ABI-tag, \"a\"\n\t" + ".p2align 2\n\t" + ".long 1f - 0f\n\t" /* name length */ + ".long 3f - 2f\n\t" /* data length */ + ".long 1\n\t" /* note length */ + "0: .asciz \"GNU\"\n\t" /* vendor name */ + "1: .p2align 2\n\t" + "2: .long 0\n\t" /* note data: the ABI tag */ + ".long 2,4,20\n\t" /* Minimum kernel version w/TLS */ + "3: .p2align 2\n\t"); /* pad out section */ +#endif /* __linux__ */ + +__asm__(".text\n" + ".balign 32\n" + "x86_64_entry_start:"); + +#define STUB_ASM_ENTRY(func) \ + ".globl " func "\n" \ + ".type " func ", @function\n" \ + ".balign 32\n" \ + func ":" + +#define STUB_ASM_CODE(slot) \ + "movq " ENTRY_CURRENT_TABLE "@GOTTPOFF(%rip), %rax\n\t" \ + "movq %fs:(%rax), %r11\n\t" \ + "jmp *(8 * " slot ")(%r11)" + +#define MAPI_TMP_STUB_ASM_GCC +#include "mapi_tmp.h" + +#ifndef MAPI_MODE_BRIDGE + +__asm__("x86_64_current_tls:\n\t" + "movq " ENTRY_CURRENT_TABLE "@GOTTPOFF(%rip), %rax\n\t" + "ret"); + +extern unsigned long +x86_64_current_tls(); + +#include <string.h> +#include "u_execmem.h" + +void +entry_patch_public(void) +{ +} + +mapi_func +entry_get_public(int slot) +{ + extern char x86_64_entry_start[]; + return (mapi_func) (x86_64_entry_start + slot * 32); +} + +void +entry_patch(mapi_func entry, int slot) +{ + char *code = (char *) entry; + *((unsigned int *) (code + 12)) = slot * sizeof(mapi_func); +} + +mapi_func +entry_generate(int slot) +{ + const char code_templ[16] = { + /* movq %fs:0, %r11 */ + 0x64, 0x4c, 0x8b, 0x1c, 0x25, 0x00, 0x00, 0x00, 0x00, + /* jmp *0x1234(%r11) */ + 0x41, 0xff, 0xa3, 0x34, 0x12, 0x00, 0x00, + }; + unsigned long addr; + void *code; + mapi_func entry; + + addr = x86_64_current_tls(); + if ((addr >> 32) != 0xffffffff) + return NULL; + addr &= 0xffffffff; + + code = u_execmem_alloc(sizeof(code_templ)); + if (!code) + return NULL; + + memcpy(code, code_templ, sizeof(code_templ)); + + *((unsigned int *) (code + 5)) = addr; + entry = (mapi_func) code; + entry_patch(entry, slot); + + return entry; +} + +#endif /* MAPI_MODE_BRIDGE */ |