70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
/*
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* Copyright 2003-2007, Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _TLS_H
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#define _TLS_H
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#include <BeBuild.h>
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#include <SupportDefs.h>
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/* A maximum of 64 keys is allowed to store in TLS - the key is reserved
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* process-wide. Note that tls_allocate() will return B_NO_MEMORY if you
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* try to exceed this limit.
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*/
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#define TLS_MAX_KEYS 64
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int32 tls_allocate(void);
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#if !_NO_INLINE_ASM && __INTEL__ && __GNUC__
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static inline void *
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tls_get(int32 index)
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{
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void *ret;
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__asm__ __volatile__ (
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"movl %%fs:(, %1, 4), %0"
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: "=r" (ret) : "r" (index));
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return ret;
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}
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static inline void **
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tls_address(int32 index)
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{
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void **ret;
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__asm__ __volatile__ (
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"movl %%fs:0, %0\n\t"
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"leal (%0, %1, 4), %0\n\t"
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: "=&r" (ret) : "r" (index));
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return ret;
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}
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static inline void
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tls_set(int32 index, void *value)
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{
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__asm__ __volatile__ (
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"movl %1, %%fs:(, %0, 4)"
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: : "r" (index), "r" (value));
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}
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#else
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extern void *tls_get(int32 index);
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extern void **tls_address(int32 index);
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extern void tls_set(int32 index, void *value);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TLS_H */
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