1133066Sdfr/*- 2133066Sdfr * Copyright (C) 2004 NVIDIA Corporation. 3133066Sdfr * All rights reserved. 4133066Sdfr * 5133066Sdfr * Redistribution and use in source and binary forms, with or without 6133066Sdfr * modification, are permitted provided that the following conditions 7133066Sdfr * are met: 8133066Sdfr * 1. Redistributions of source code must retain the above copyright 9133066Sdfr * notice, this list of conditions and the following disclaimer. 10133066Sdfr * 2. Redistributions in binary form must reproduce the above copyright 11133066Sdfr * notice, this list of conditions and the following disclaimer in the 12133066Sdfr * documentation and/or other materials provided with the distribution. 13133066Sdfr * 14133066Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15133066Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16133066Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17133066Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18133066Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19133066Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20133066Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21133066Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22133066Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23133066Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24133066Sdfr * SUCH DAMAGE. 25133066Sdfr * 26133066Sdfr * $FreeBSD$ 27133066Sdfr */ 28133066Sdfr 29133066Sdfr#include <stdio.h> 30133066Sdfr 31133066Sdfr#define __G_TLS_OFFSETS_SIZE 8 32133066Sdfrunsigned long int __gl_tls_offsets[__G_TLS_OFFSETS_SIZE]; 33133066Sdfr 34133066Sdfrvoid __gl_tls_init_offsets(); 35133066Sdfr 36133066Sdfr#ifdef __GL_TLS_SINGLE_INSTRUCTION 37133066Sdfr#define THREAD_GETMEM(num) \ 38133066Sdfr({ \ 39133066Sdfr void *__value; \ 40133066Sdfr __asm__ __volatile__ ( \ 41133066Sdfr "movl %%gs:(%1),%0" \ 42133066Sdfr : "=r" (__value) \ 43133066Sdfr : "r" (__gl_tls_offsets[num]) \ 44133066Sdfr ); \ 45133066Sdfr __value; \ 46133066Sdfr}) 47133066Sdfr 48133066Sdfr#define THREAD_SETMEM(num, value) \ 49133066Sdfrdo { \ 50133066Sdfr void *__value = (value); \ 51133066Sdfr __asm__ __volatile__ ( \ 52133066Sdfr "movl %0,%%gs:(%1)" \ 53133066Sdfr : \ 54133066Sdfr : "r" (__value), \ 55133066Sdfr "r" (__gl_tls_offsets[num]) \ 56133066Sdfr ); \ 57133066Sdfr} while (0) 58133066Sdfr#else 59133066Sdfr#define __GL_TLS_GET(num) \ 60133066Sdfr({ \ 61133066Sdfr void *__dummy, *__value; \ 62133066Sdfr __asm__ __volatile__ ( \ 63133066Sdfr "movl %%gs:0,%2 \n\t" \ 64133066Sdfr "movl (%2,%1),%0 \n\t" \ 65133066Sdfr : "=r" (__value) \ 66133066Sdfr : "r" (__gl_tls_offsets[num]), \ 67133066Sdfr "r" (__dummy) \ 68133066Sdfr ); \ 69133066Sdfr __value; \ 70133066Sdfr}) 71133066Sdfr 72133066Sdfr#define __GL_TLS_SET(num, value) \ 73133066Sdfrdo { \ 74133066Sdfr void *__dummy, *__value = (value); \ 75133066Sdfr __asm__ __volatile__ ( \ 76133066Sdfr "movl %%gs:0,%2 \n\t" \ 77133066Sdfr "movl %0,(%2,%1) \n\t" \ 78133066Sdfr : \ 79133066Sdfr : "r" (__value), \ 80133066Sdfr "r" (__gl_tls_offsets[num]), \ 81133066Sdfr "r" (__dummy) \ 82133066Sdfr ); \ 83133066Sdfr} while (0) 84133066Sdfr#endif 85133066Sdfr 86133066Sdfrvoid _init(void) 87133066Sdfr{ 88133066Sdfr __gl_tls_init_offsets(); 89133066Sdfr 90133066Sdfr __GL_TLS_SET(0, (void *) 0xff000000); 91133066Sdfr __GL_TLS_SET(1, (void *) 0xff000001); 92133066Sdfr __GL_TLS_SET(2, (void *) 0xff000002); 93133066Sdfr __GL_TLS_SET(3, (void *) 0xff000003); 94133066Sdfr __GL_TLS_SET(4, (void *) 0xff000004); 95133066Sdfr __GL_TLS_SET(5, (void *) 0xff000005); 96133066Sdfr __GL_TLS_SET(6, (void *) 0xff000006); 97133066Sdfr __GL_TLS_SET(7, (void *) 0xff000007); 98133066Sdfr} 99133066Sdfr 100133066Sdfrvoid __gl_tls_test(void) 101133066Sdfr{ 102133066Sdfr printf("__GL_TLS_GET(0) = %p\n", __GL_TLS_GET(0)); 103133066Sdfr printf("__GL_TLS_GET(1) = %p\n", __GL_TLS_GET(1)); 104133066Sdfr printf("__GL_TLS_GET(2) = %p\n", __GL_TLS_GET(2)); 105133066Sdfr printf("__GL_TLS_GET(3) = %p\n", __GL_TLS_GET(3)); 106133066Sdfr printf("__GL_TLS_GET(4) = %p\n", __GL_TLS_GET(4)); 107133066Sdfr printf("__GL_TLS_GET(5) = %p\n", __GL_TLS_GET(5)); 108133066Sdfr printf("__GL_TLS_GET(6) = %p\n", __GL_TLS_GET(6)); 109133066Sdfr printf("__GL_TLS_GET(7) = %p\n", __GL_TLS_GET(7)); 110133066Sdfr} 111