Add <machine/tls.h> header to hold MD constants and helpers for TLS.
The header exports the following: - Definition of struct tcb. - Helpers to get/set the tcb for the current thread. - TLS_TCB_SIZE (size of TCB) - TLS_TCB_ALIGN (alignment of TCB) - TLS_VARIANT_I or TLS_VARIANT_II - TLS_DTV_OFFSET (bias of pointers in dtv[]) - TLS_TP_OFFSET (bias of "thread pointer" relative to TCB) Note that TLS_TP_OFFSET does not account for if the unbiased thread pointer points to the start of the TCB (arm and x86) or the end of the TCB (MIPS, PowerPC, and RISC-V). Note also that for amd64, the struct tcb does not include the unused tcb_spare field included in the current structure in libthr. libthr does not use this field, and the existing calls in libc and rtld that allocate a TCB for amd64 assume it is the size of 3 Elf_Addr's (and thus do not allocate room for tcb_spare). A <sys/_tls_variant_i.h> header is used by architectures using Variant I TLS which uses a common struct tcb. Reviewed by: kib (older version of x86/tls.h), jrtc27 Sponsored by: The University of Cambridge, Google Inc. Differential Revision: https://reviews.freebsd.org/D33351
This commit is contained in:
John Baldwin
parent
4c2f5bfbfa
commit
1a62e9bc00
5
sys/amd64/include/tls.h
Normal file
5
sys/amd64/include/tls.h
Normal file
@ -0,0 +1,5 @@
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/*-
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* This file is in the public domain.
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*/
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#include <x86/tls.h>
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55
sys/arm/include/tls.h
Normal file
55
sys/arm/include/tls.h
Normal file
@ -0,0 +1,55 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
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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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*
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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
|
||||
* 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_TLS_H_
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#define _MACHINE_TLS_H_
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#include <sys/_tls_variant_i.h>
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#include <machine/sysarch.h>
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#define TLS_DTV_OFFSET 0
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#define TLS_TCB_ALIGN 8
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#define TLS_TP_OFFSET 0
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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sysarch(ARM_SET_TP, tcb);
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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struct tcb *tcb;
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__asm __volatile("mrc p15, 0, %0, c13, c0, 3" \
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: "=r" (tcb));
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return (tcb);
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}
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#endif /* !_MACHINE_TLS_H_ */
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55
sys/arm64/include/tls.h
Normal file
55
sys/arm64/include/tls.h
Normal file
@ -0,0 +1,55 @@
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/*-
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
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* Copyright (c) 2014 the FreeBSD Foundation
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* All rights reserved.
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*
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* Portions of this software were developed by Andrew Turner
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* under sponsorship from the FreeBSD Foundation
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_TLS_H_
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#define _MACHINE_TLS_H_
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#include <sys/_tls_variant_i.h>
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#define TLS_DTV_OFFSET 0
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#define TLS_TCB_ALIGN 16
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#define TLS_TP_OFFSET 0
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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__asm __volatile("msr tpidr_el0, %x0" :: "r" (tcb));
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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struct tcb *tcb;
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__asm __volatile("mrs %x0, tpidr_el0" : "=r" (tcb));
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return (tcb);
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}
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#endif /* !_MACHINE_TLS_H_ */
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5
sys/i386/include/tls.h
Normal file
5
sys/i386/include/tls.h
Normal file
@ -0,0 +1,5 @@
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/*-
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* This file is in the public domain.
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*/
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#include <x86/tls.h>
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@ -34,20 +34,52 @@
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#ifndef __MIPS_TLS_H__
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#define __MIPS_TLS_H__
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#include <sys/_tls_variant_i.h>
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#include <machine/sysarch.h>
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/*
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* TLS parameters
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*/
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#define TLS_TP_OFFSET 0x7000
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#define TLS_DTV_OFFSET 0x8000
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#define TLS_DTV_OFFSET 0x8000
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#define TLS_TCB_ALIGN 8
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#define TLS_TP_OFFSET 0x7000
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#ifdef __mips_n64
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#define TLS_TCB_SIZE 16
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#ifdef COMPAT_FREEBSD32
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#define TLS_TCB_SIZE32 8
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#define TLS_TCB_SIZE32 8
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#endif
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#ifndef _KERNEL
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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sysarch(MIPS_SET_TLS, tcb);
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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struct tcb *tcb;
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#ifdef TLS_USE_SYSARCH
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sysarch(MIPS_GET_TLS, &tcb);
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#else
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#define TLS_TCB_SIZE 8
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__asm__ __volatile__ (
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".set\tpush\n\t"
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#ifdef __mips_n64
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".set\tmips64r2\n\t"
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#else
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".set\tmips32r2\n\t"
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#endif
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"rdhwr\t%0, $29\n\t"
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".set\tpop"
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: "=r" (tcb));
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tcb = (struct tcb *)((uintptr_t)tcb - TLS_TP_OFFSET - TLS_TCB_SIZE);
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#endif
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return (tcb);
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}
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#endif
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#endif /* __MIPS_TLS_H__ */
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66
sys/powerpc/include/tls.h
Normal file
66
sys/powerpc/include/tls.h
Normal file
@ -0,0 +1,66 @@
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright 2004 by Peter Grehan. 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
|
||||
* 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#ifndef _MACHINE_TLS_H_
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#define _MACHINE_TLS_H_
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#include <sys/_tls_variant_i.h>
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#define TLS_DTV_OFFSET 0x8000
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#define TLS_TCB_ALIGN TLS_TCB_SIZE
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#define TLS_TP_OFFSET 0x7000
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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#ifdef __powerpc64__
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__asm __volatile("mr 13,%0" ::
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"r" ((uint8_t *)tcb + TLS_TP_OFFSET + TLS_TCB_SIZE));
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#else
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__asm __volatile("mr 2,%0" ::
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"r" ((uint8_t *)tcb + TLS_TP_OFFSET + TLS_TCB_SIZE));
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#endif
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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struct tcb *tcb;
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#ifdef __powerpc64__
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__asm __volatile("addi %0,13,%1" : "=r" (tcb) :
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"i" (-(TLS_TP_OFFSET + TLS_TCB_SIZE)));
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#else
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__asm __volatile("addi %0,2,%1" : "=r" (tcb) :
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"i" (-(TLS_TP_OFFSET + TLS_TCB_SIZE)));
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#endif
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return (tcb);
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}
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#endif /* !_MACHINE_TLS_H_ */
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60
sys/riscv/include/tls.h
Normal file
60
sys/riscv/include/tls.h
Normal file
@ -0,0 +1,60 @@
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/*-
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>
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* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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* University of Cambridge Computer Laboratory under DARPA/AFRL contract
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* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Portions of this software were developed by the University of Cambridge
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* Computer Laboratory as part of the CTSRD Project, with support from the
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* UK Higher Education Innovation Fund (HEIF).
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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
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* 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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#ifndef _MACHINE_TLS_H_
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#define _MACHINE_TLS_H_
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#include <sys/_tls_variant_i.h>
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#define TLS_DTV_OFFSET 0x800
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#define TLS_TCB_ALIGN 16
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#define TLS_TP_OFFSET 0
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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__asm __volatile("addi tp, %0, %1" :: "r" (tcb), "I" (TLS_TCB_SIZE));
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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struct tcb *tcb;
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__asm __volatile("addi %0, tp, %1" : "=r" (tcb) : "I" (-TLS_TCB_SIZE));
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return (tcb);
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}
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#endif /* !_MACHINE_TLS_H_ */
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47
sys/sys/_tls_variant_i.h
Normal file
47
sys/sys/_tls_variant_i.h
Normal file
@ -0,0 +1,47 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
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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
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_TLS_VARIANT_I_H_
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#define _SYS_TLS_VARIANT_I_H_
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/*
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* Variant I TLS uses the same TCB layout across architectures.
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*/
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#define TLS_VARIANT_I
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struct pthread;
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struct tcb {
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uintptr_t *tcb_dtv; /* required by rtld */
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struct pthread *tcb_thread;
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};
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#define TLS_TCB_SIZE sizeof(struct tcb)
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#endif /* !_SYS_TLS_VARIANT_I_H_ */
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81
sys/x86/include/tls.h
Normal file
81
sys/x86/include/tls.h
Normal file
@ -0,0 +1,81 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2003 David Xu <davidxu@freebsd.org>
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* Copyright (c) 2001 Daniel Eischen <deischen@freebsd.org>
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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
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Neither the name of the author nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* 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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#ifndef _MACHINE_TLS_H_
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#define _MACHINE_TLS_H_
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#include <x86/sysarch.h>
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#define TLS_VARIANT_II
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struct pthread;
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/*
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* Variant II tcb, first two members are required by rtld,
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* %fs (amd64) / %gs (i386) points to the structure.
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*/
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struct tcb {
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struct tcb *tcb_self; /* required by rtld */
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uintptr_t *tcb_dtv; /* required by rtld */
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struct pthread *tcb_thread;
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};
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#define TLS_DTV_OFFSET 0
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#ifdef __amd64__
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#define TLS_TCB_ALIGN 16
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#else
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#define TLS_TCB_ALIGN 4
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#endif
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#define TLS_TCB_SIZE sizeof(struct tcb)
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#define TLS_TP_OFFSET 0
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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#ifdef __amd64__
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amd64_set_fsbase(tcb);
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#else
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i386_set_gsbase(tcb);
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#endif
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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struct tcb *tcb;
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#ifdef __amd64__
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__asm __volatile("movq %%fs:0, %0" : "=r" (tcb));
|
||||
#else
|
||||
__asm __volatile("movl %%gs:0, %0" : "=r" (tcb));
|
||||
#endif
|
||||
return (tcb);
|
||||
}
|
||||
|
||||
#endif /* !_MACHINE_TLS_H_ */
|
||||
Loading…
Reference in New Issue
Block a user