tls-test-lib.c revision 133066 
1/*-
2 * Copyright (C) 2004 NVIDIA Corporation.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$FreeBSD: head/tools/regression/tls/ttls3/tls-test-lib.c 133066 2004-08-03 09:04:01Z dfr $
27 */
28
29#include <stdio.h>
30
31#define __G_TLS_OFFSETS_SIZE    8
32unsigned long int __gl_tls_offsets[__G_TLS_OFFSETS_SIZE];
33
34void __gl_tls_init_offsets();
35
36#ifdef __GL_TLS_SINGLE_INSTRUCTION
37#define THREAD_GETMEM(num)                  \
38({                                          \
39    void *__value;                          \
40    __asm__ __volatile__ (                  \
41        "movl %%gs:(%1),%0"                 \
42        : "=r" (__value)                    \
43        : "r" (__gl_tls_offsets[num])       \
44    );                                      \
45    __value;                                \
46})
47
48#define THREAD_SETMEM(num, value)           \
49do {                                        \
50    void *__value = (value);                \
51    __asm__ __volatile__ (                  \
52        "movl %0,%%gs:(%1)"                 \
53        :                                   \
54        : "r" (__value),                    \
55          "r" (__gl_tls_offsets[num])       \
56    );                                      \
57} while (0)
58#else
59#define __GL_TLS_GET(num)                   \
60({                                          \
61    void *__dummy, *__value;                \
62    __asm__ __volatile__ (                  \
63        "movl %%gs:0,%2     \n\t"           \
64        "movl (%2,%1),%0    \n\t"           \
65        : "=r" (__value)                    \
66        : "r" (__gl_tls_offsets[num]),      \
67          "r" (__dummy)                     \
68    );                                      \
69    __value;                                \
70})
71
72#define __GL_TLS_SET(num, value)            \
73do {                                        \
74    void *__dummy, *__value = (value);      \
75    __asm__ __volatile__ (                  \
76        "movl %%gs:0,%2     \n\t"           \
77        "movl %0,(%2,%1)    \n\t"           \
78        :                                   \
79        : "r" (__value),                    \
80          "r" (__gl_tls_offsets[num]),      \
81          "r" (__dummy)                     \
82    );                                      \
83} while (0)
84#endif
85
86void _init(void)
87{
88    __gl_tls_init_offsets();
89
90    __GL_TLS_SET(0, (void *) 0xff000000);
91    __GL_TLS_SET(1, (void *) 0xff000001);
92    __GL_TLS_SET(2, (void *) 0xff000002);
93    __GL_TLS_SET(3, (void *) 0xff000003);
94    __GL_TLS_SET(4, (void *) 0xff000004);
95    __GL_TLS_SET(5, (void *) 0xff000005);
96    __GL_TLS_SET(6, (void *) 0xff000006);
97    __GL_TLS_SET(7, (void *) 0xff000007);
98}
99
100void __gl_tls_test(void)
101{
102    printf("__GL_TLS_GET(0) = %p\n", __GL_TLS_GET(0));
103    printf("__GL_TLS_GET(1) = %p\n", __GL_TLS_GET(1));
104    printf("__GL_TLS_GET(2) = %p\n", __GL_TLS_GET(2));
105    printf("__GL_TLS_GET(3) = %p\n", __GL_TLS_GET(3));
106    printf("__GL_TLS_GET(4) = %p\n", __GL_TLS_GET(4));
107    printf("__GL_TLS_GET(5) = %p\n", __GL_TLS_GET(5));
108    printf("__GL_TLS_GET(6) = %p\n", __GL_TLS_GET(6));
109    printf("__GL_TLS_GET(7) = %p\n", __GL_TLS_GET(7));
110}
111