From patchwork Fri Mar 6 18:24:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vineet Gupta X-Patchwork-Id: 1250560 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org (client-ip=209.132.180.131; helo=sourceware.org; envelope-from=libc-alpha-return-110358-incoming=patchwork.ozlabs.org@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=synopsys.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.a=rsa-sha1 header.s=default header.b=gbjKaTmV; dkim=pass (2048-bit key; unprotected) header.d=synopsys.com header.i=@synopsys.com header.a=rsa-sha256 header.s=mail header.b=PhGfbVoF; dkim-atps=neutral Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48Yx462gFfz9sPJ for ; Sat, 7 Mar 2020 05:29:58 +1100 (AEDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; q=dns; s= default; b=OBLFLjxz1dIssivmIOKmW0GrQkXJDpZGOUAlFIWpgjgu3MB5VLfm3 W8LzLkC6bQqX7SuNkkZlgb/1y/aqxgZy9iqMb3GjzHikphT7gld9MrTJE8zg7sVF q3zG1KZI77hXXL8uW/qyIXSPbNN+f5pS3FVw7qB0BbOVit9Bh09mNA= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; s=default; bh=DOMk1RYpBaP9/M/TloKCAxkyd38=; b=gbjKaTmVr0feNBkaWthNvJ4r9ZmU M8qoFPGL5vUvQ9kwV+KoviZ5xwDzoFGPperJnfCCRy7yM/xC2ZZTZd0KwB9bSbeS HMISJRKlikPKeLo+6AcUrWDHm8d0FvEBP8mG+WNeHOWzJlhUkYuI8d/vQfomvX6f QvXIXi8lSN2pirU= Received: (qmail 5696 invoked by alias); 6 Mar 2020 18:29:42 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 5665 invoked by uid 89); 6 Mar 2020 18:29:42 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-21.5 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, SPF_PASS autolearn=ham version=3.3.1 spammy=Derive, tcbhead_t X-HELO: smtprelay-out1.synopsys.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1583519068; bh=Bh17Bz4wYiIlEQ5IKpFYO0f8T25LjZRcgqEI7wxuuXg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PhGfbVoFaIHZYn3DJG0hWyrByeDU0aNQaMIrtaINT/WAOt4eq0mi1LBRkH58tWQAF z3WsszAKl4wIyuHpV5bJJz98KFe73xIb1iKW7aLLtQCSwlHZDWPn+SjlCtdYsEcAcF Ve427Xg7bbxxtfvV4bsfN5O1Qb6RKf7PQpFuJhV4PLLLa2GQ8Hu1acjoTEnM2ZsUdZ dNMJ29zF7fFR0zXtekwCOde49eqsHftFx2DWC2H7ODUdONraidTCJdoUXD19fjM6Kf /U8FC5v6Ga1u9P8hA9aPZSH9BDruyvQoOa1hxDmzBMmzEyHN/cBDnGuJ00J05V1AN1 j098SCm2hAPjg== From: Vineet Gupta To: libc-alpha@sourceware.org Cc: linux-snps-arc@lists.infradead.org, Vineet Gupta Subject: [PATCH v3 05/17] ARC: Thread Local Storage support Date: Fri, 6 Mar 2020 10:24:07 -0800 Message-Id: <20200306182419.13945-6-vgupta@synopsys.com> In-Reply-To: <20200306182419.13945-1-vgupta@synopsys.com> References: <20200306182419.13945-1-vgupta@synopsys.com> MIME-Version: 1.0 This includes all 4 TLS addressing models Signed-off-by: Vineet Gupta --- sysdeps/arc/dl-tls.h | 30 +++++++ sysdeps/arc/libc-tls.c | 27 ++++++ sysdeps/arc/nptl/tcb-offsets.sym | 11 +++ sysdeps/arc/nptl/tls.h | 150 +++++++++++++++++++++++++++++++ sysdeps/arc/stackinfo.h | 33 +++++++ 5 files changed, 251 insertions(+) create mode 100644 sysdeps/arc/dl-tls.h create mode 100644 sysdeps/arc/libc-tls.c create mode 100644 sysdeps/arc/nptl/tcb-offsets.sym create mode 100644 sysdeps/arc/nptl/tls.h create mode 100644 sysdeps/arc/stackinfo.h diff --git a/sysdeps/arc/dl-tls.h b/sysdeps/arc/dl-tls.h new file mode 100644 index 000000000000..2269ac6c3daa --- /dev/null +++ b/sysdeps/arc/dl-tls.h @@ -0,0 +1,30 @@ +/* Thread-local storage handling in the ELF dynamic linker. ARC version. + Copyright (C) 2012-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + + +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +extern void *__tls_get_addr (tls_index *ti); + +/* Value used for dtv entries for which the allocation is delayed. */ +#define TLS_DTV_UNALLOCATED ((void *) -1l) diff --git a/sysdeps/arc/libc-tls.c b/sysdeps/arc/libc-tls.c new file mode 100644 index 000000000000..ec88282de60e --- /dev/null +++ b/sysdeps/arc/libc-tls.c @@ -0,0 +1,27 @@ +/* Thread-local storage handling in the ELF dynamic linker. ARC version. + Copyright (C) 2005-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include +#include + +void * +__tls_get_addr (tls_index *ti) +{ + dtv_t *dtv = THREAD_DTV (); + return (char *) dtv[1].pointer.val + ti->ti_offset; +} diff --git a/sysdeps/arc/nptl/tcb-offsets.sym b/sysdeps/arc/nptl/tcb-offsets.sym new file mode 100644 index 000000000000..56950e0676ed --- /dev/null +++ b/sysdeps/arc/nptl/tcb-offsets.sym @@ -0,0 +1,11 @@ +#include +#include + +-- Derive offsets relative to the thread register. +#define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread)) + +MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) +TLS_PRE_TCB_SIZE sizeof (struct pthread) +TLS_TCB_SIZE sizeof(tcbhead_t) + +PTHREAD_TID offsetof(struct pthread, tid) diff --git a/sysdeps/arc/nptl/tls.h b/sysdeps/arc/nptl/tls.h new file mode 100644 index 000000000000..d6b166c1f92b --- /dev/null +++ b/sysdeps/arc/nptl/tls.h @@ -0,0 +1,150 @@ +/* Definition for thread-local data handling. NPTL/ARC version. + Copyright (C) 2012-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#ifndef _ARC_NPTL_TLS_H +#define _ARC_NPTL_TLS_H 1 + +#include + +#ifndef __ASSEMBLER__ +# include +# include +# include + +#include + +/* Get system call information. */ +# include + +/* The TLS blocks start right after the TCB. */ +# define TLS_DTV_AT_TP 1 +# define TLS_TCB_AT_TP 0 + +/* Get the thread descriptor definition. */ +# include + +typedef struct +{ + dtv_t *dtv; + uintptr_t pointer_guard; +} tcbhead_t; + +register struct pthread *__thread_self __asm__("r25"); + +/* This is the size of the initial TCB. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the initial TCB. */ +# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread) + +/* This is the size of the TCB. */ +#ifndef TLS_TCB_SIZE +# define TLS_TCB_SIZE sizeof (tcbhead_t) +#endif + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (struct pthread) + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* Install the dtv pointer. The pointer passed is to the element with + index -1 which contain the length. */ +# define INSTALL_DTV(tcbp, dtvp) \ + (((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1) + +/* Install new dtv for current thread. */ +# define INSTALL_NEW_DTV(dtv) \ + (THREAD_DTV() = (dtv)) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(tcbp) \ + (((tcbhead_t *) (tcbp))->dtv) + +/* Code to initially initialize the thread pointer. */ +# define TLS_INIT_TP(tcbp) \ + ({ \ + long result_var; \ + __builtin_set_thread_pointer(tcbp); \ + result_var = INTERNAL_SYSCALL (arc_settls, err, 1, (tcbp)); \ + INTERNAL_SYSCALL_ERROR_P (result_var, err) \ + ? "unknown error" : NULL; \ + }) + +/* Value passed to 'clone' for initialization of the thread register. */ +# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd) + 1 + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + (((tcbhead_t *) __builtin_thread_pointer ())->dtv) + +/* Return the thread descriptor for the current thread. */ +# define THREAD_SELF \ + ((struct pthread *)__builtin_thread_pointer () - 1) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF \ + CONST_THREAD_AREA (32, sizeof (struct pthread)) + +/* Access to data in the thread descriptor is easy. */ +# define THREAD_GETMEM(descr, member) \ + descr->member +# define THREAD_GETMEM_NC(descr, member, idx) \ + descr->member[idx] +# define THREAD_SETMEM(descr, member, value) \ + descr->member = (value) +# define THREAD_SETMEM_NC(descr, member, idx, value) \ + descr->member[idx] = (value) + +/* Get and set the global scope generation counter in struct pthread. */ +#define THREAD_GSCOPE_IN_TCB 1 +#define THREAD_GSCOPE_FLAG_UNUSED 0 +#define THREAD_GSCOPE_FLAG_USED 1 +#define THREAD_GSCOPE_FLAG_WAIT 2 +#define THREAD_GSCOPE_RESET_FLAG() \ + do \ + { int __res \ + = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \ + THREAD_GSCOPE_FLAG_UNUSED); \ + if (__res == THREAD_GSCOPE_FLAG_WAIT) \ + lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \ + } \ + while (0) +#define THREAD_GSCOPE_SET_FLAG() \ + do \ + { \ + THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \ + atomic_write_barrier (); \ + } \ + while (0) +#define THREAD_GSCOPE_WAIT() \ + GL(dl_wait_lookup_done) () + +#else + +# include + +# r25 is dedicated TLS register for ARC +.macro THREAD_SELF reg + # struct pthread is just ahead of TCB + sub \reg, r25, TLS_PRE_TCB_SIZE +.endm + +#endif /* __ASSEMBLER__ */ + +#endif /* tls.h */ diff --git a/sysdeps/arc/stackinfo.h b/sysdeps/arc/stackinfo.h new file mode 100644 index 000000000000..911efd928675 --- /dev/null +++ b/sysdeps/arc/stackinfo.h @@ -0,0 +1,33 @@ +/* Stack environment definitions for ARC. + Copyright (C) 2012-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +/* This file contains a bit of information about the stack allocation + of the processor. */ + +#ifndef _STACKINFO_H +#define _STACKINFO_H 1 + +#include + +/* On ARC the stack grows down. */ +#define _STACK_GROWS_DOWN 1 + +/* Default to a non-executable stack. */ +#define DEFAULT_STACK_PERMS (PF_R|PF_W) + +#endif /* stackinfo.h */