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