From patchwork Fri Mar 13 03:04:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: develop--- via Libc-alpha X-Patchwork-Id: 1254153 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=8.43.85.97; helo=sourceware.org; envelope-from=libc-alpha-bounces@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=sourceware.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.a=rsa-sha256 header.s=default header.b=Rj9H7gjo; dkim-atps=neutral Received: from sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 48drCK0jPRz9sSX for ; Fri, 13 Mar 2020 14:04:45 +1100 (AEDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id EAE6D3AA8026; Fri, 13 Mar 2020 03:04:33 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org EAE6D3AA8026 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1584068674; bh=IO0JI+RwhAHOtf5dikgFfTq6zIOpnX8ws3RxMLM20J8=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=Rj9H7gjovmMNBevZyt9pVI1jkY3IJ9DvkpHz0g7F+hUfhvIzsOiN+88NxuoCN+7b2 ns/33LkCFkwRhdRVNen3hnL+v4+j5Bvfvz/spasR3iaNq+uf3g+6789l3KO/s5Sm50 4MORd2BN8rfN/Me1AVvqzvPZFgZ2iJc3dqGqDyWg= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from smtprelay-out1.synopsys.com (smtprelay-out1.synopsys.com [149.117.87.133]) by sourceware.org (Postfix) with ESMTPS id 26CD63AA7CB5 for ; Fri, 13 Mar 2020 03:04:31 +0000 (GMT) Received: from mailhost.synopsys.com (sv1-mailhost2.synopsys.com [10.205.2.132]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by smtprelay-out1.synopsys.com (Postfix) with ESMTPS id 6B589C0F8F; Fri, 13 Mar 2020 03:04:30 +0000 (UTC) Received: from vineetg-Latitude-E7450.internal.synopsys.com (unknown [10.13.182.230]) by mailhost.synopsys.com (Postfix) with ESMTP id 1F066A007A; Fri, 13 Mar 2020 03:04:30 +0000 (UTC) To: libc-alpha@sourceware.org Subject: [PATCH v4 04/15] ARC: Thread Local Storage support Date: Thu, 12 Mar 2020 20:04:08 -0700 Message-Id: <20200313030419.15843-5-vgupta@synopsys.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200313030419.15843-1-vgupta@synopsys.com> References: <20200313030419.15843-1-vgupta@synopsys.com> MIME-Version: 1.0 X-Spam-Status: No, score=-27.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Vineet Gupta via Libc-alpha From: develop--- via Libc-alpha Reply-To: Vineet Gupta Cc: Vineet Gupta , linux-snps-arc@lists.infradead.org Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" 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..10c7117527ff --- /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, 1, (tcbp)); \ + INTERNAL_SYSCALL_ERROR_P (result_var) \ + ? "settls syscall 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 */