111 lines
4.2 KiB
C
111 lines
4.2 KiB
C
/*-
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* Copyright (C) 2004 NVIDIA Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <stdio.h>
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#define __G_TLS_OFFSETS_SIZE 8
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unsigned long int __gl_tls_offsets[__G_TLS_OFFSETS_SIZE];
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void __gl_tls_init_offsets();
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#ifdef __GL_TLS_SINGLE_INSTRUCTION
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#define THREAD_GETMEM(num) \
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({ \
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void *__value; \
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__asm__ __volatile__ ( \
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"movl %%gs:(%1),%0" \
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: "=r" (__value) \
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: "r" (__gl_tls_offsets[num]) \
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); \
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__value; \
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})
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#define THREAD_SETMEM(num, value) \
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do { \
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void *__value = (value); \
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__asm__ __volatile__ ( \
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"movl %0,%%gs:(%1)" \
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: \
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: "r" (__value), \
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"r" (__gl_tls_offsets[num]) \
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); \
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} while (0)
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#else
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#define __GL_TLS_GET(num) \
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({ \
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void *__dummy, *__value; \
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__asm__ __volatile__ ( \
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"movl %%gs:0,%2 \n\t" \
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"movl (%2,%1),%0 \n\t" \
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: "=r" (__value) \
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: "r" (__gl_tls_offsets[num]), \
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"r" (__dummy) \
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); \
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__value; \
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})
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#define __GL_TLS_SET(num, value) \
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do { \
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void *__dummy, *__value = (value); \
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__asm__ __volatile__ ( \
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"movl %%gs:0,%2 \n\t" \
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"movl %0,(%2,%1) \n\t" \
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: \
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: "r" (__value), \
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"r" (__gl_tls_offsets[num]), \
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"r" (__dummy) \
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); \
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} while (0)
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#endif
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void _init(void)
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{
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__gl_tls_init_offsets();
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__GL_TLS_SET(0, (void *) 0xff000000);
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__GL_TLS_SET(1, (void *) 0xff000001);
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__GL_TLS_SET(2, (void *) 0xff000002);
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__GL_TLS_SET(3, (void *) 0xff000003);
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__GL_TLS_SET(4, (void *) 0xff000004);
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__GL_TLS_SET(5, (void *) 0xff000005);
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__GL_TLS_SET(6, (void *) 0xff000006);
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__GL_TLS_SET(7, (void *) 0xff000007);
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}
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void __gl_tls_test(void)
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{
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printf("__GL_TLS_GET(0) = %p\n", __GL_TLS_GET(0));
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printf("__GL_TLS_GET(1) = %p\n", __GL_TLS_GET(1));
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printf("__GL_TLS_GET(2) = %p\n", __GL_TLS_GET(2));
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printf("__GL_TLS_GET(3) = %p\n", __GL_TLS_GET(3));
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printf("__GL_TLS_GET(4) = %p\n", __GL_TLS_GET(4));
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printf("__GL_TLS_GET(5) = %p\n", __GL_TLS_GET(5));
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printf("__GL_TLS_GET(6) = %p\n", __GL_TLS_GET(6));
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printf("__GL_TLS_GET(7) = %p\n", __GL_TLS_GET(7));
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}
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