original_kernel/tools/testing/selftests/rseq/rseq-ppc-thread-pointer.h

31 lines
517 B
C

/* SPDX-License-Identifier: LGPL-2.1-only OR MIT */
/*
* rseq-ppc-thread-pointer.h
*
* (C) Copyright 2021 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*/
#ifndef _RSEQ_PPC_THREAD_POINTER
#define _RSEQ_PPC_THREAD_POINTER
#ifdef __cplusplus
extern "C" {
#endif
static inline void *rseq_thread_pointer(void)
{
#ifdef __powerpc64__
register void *__result asm ("r13");
#else
register void *__result asm ("r2");
#endif
asm ("" : "=r" (__result));
return __result;
}
#ifdef __cplusplus
}
#endif
#endif