From patchwork Wed Jan 30 01:25:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vineet Gupta X-Patchwork-Id: 31253 Received: (qmail 11652 invoked by alias); 30 Jan 2019 01:28:46 -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 11571 invoked by uid 89); 30 Jan 2019 01:28:45 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-26.9 required=5.0 tests=BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.2 spammy=mandated, holder X-HELO: smtprelay.synopsys.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1548811715; bh=1DJe6xtHmM5HIM87aV9O4jEtzrKBd03f67tqVCa0U2k=; h=From:To:CC:Subject:Date:In-Reply-To:References:From; b=Eg0dd4r+DekJBIzGOWscsw2kgT2NhMO/J5Yk4bStgF5rJvFZn/Y2xFSJUq7Igaz/p pwllC44wIsQz2JnqpofezxbA4Eh62RTSp/0yRMpNa6Yjf9e4JGXszkcIkr3v2HSG5B 2YpcduNpJ5Z936G+tPG17WPPcyJwVUYNAZZfF885Hz623HJTHN1B1bn8bUD5zX/G9j U+6R0ywxblHUfP2gF4QHq1UKtuUfF0Vu7wprUPdo2JRbEOsMv/u9PtmL24Bqh+3TJY nqb4XakerBv6dJpFaJyJrKgPqVisayR8TiZBc/LEcKZTB4Xugca2lBQA8TqAFswwf/ Es8QV4gowDzuA== From: Vineet Gupta To: CC: , Vineet Gupta Subject: [PATCH v2 08/15] ARC: Linux ABI Date: Tue, 29 Jan 2019 17:25:48 -0800 Message-ID: <1548811555-24373-9-git-send-email-vgupta@synopsys.com> In-Reply-To: <1548811555-24373-1-git-send-email-vgupta@synopsys.com> References: <1548811555-24373-1-git-send-email-vgupta@synopsys.com> MIME-Version: 1.0 Signed-off-by: Vineet Gupta --- ChangeLog | 15 ++++ sysdeps/arc/nptl/pthread-offsets.h | 5 ++ sysdeps/arc/nptl/pthreaddef.h | 32 ++++++++ sysdeps/unix/sysv/linux/arc/bits/procfs.h | 35 ++++++++ .../unix/sysv/linux/arc/bits/types/__sigset_t.h | 12 +++ sysdeps/unix/sysv/linux/arc/getcontext.S | 63 +++++++++++++++ sysdeps/unix/sysv/linux/arc/ipc_priv.h | 21 +++++ sysdeps/unix/sysv/linux/arc/makecontext.c | 75 ++++++++++++++++++ sysdeps/unix/sysv/linux/arc/setcontext.S | 92 ++++++++++++++++++++++ sysdeps/unix/sysv/linux/arc/sigcontextinfo.h | 23 ++++++ sysdeps/unix/sysv/linux/arc/swapcontext.S | 92 ++++++++++++++++++++++ sysdeps/unix/sysv/linux/arc/sys/cachectl.h | 36 +++++++++ sysdeps/unix/sysv/linux/arc/sys/ucontext.h | 63 +++++++++++++++ sysdeps/unix/sysv/linux/arc/sys/user.h | 31 ++++++++ sysdeps/unix/sysv/linux/arc/ucontext-macros.h | 29 +++++++ sysdeps/unix/sysv/linux/arc/ucontext_i.sym | 20 +++++ 16 files changed, 644 insertions(+) create mode 100644 sysdeps/arc/nptl/pthread-offsets.h create mode 100644 sysdeps/arc/nptl/pthreaddef.h create mode 100644 sysdeps/unix/sysv/linux/arc/bits/procfs.h create mode 100644 sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h create mode 100644 sysdeps/unix/sysv/linux/arc/getcontext.S create mode 100644 sysdeps/unix/sysv/linux/arc/ipc_priv.h create mode 100644 sysdeps/unix/sysv/linux/arc/makecontext.c create mode 100644 sysdeps/unix/sysv/linux/arc/setcontext.S create mode 100644 sysdeps/unix/sysv/linux/arc/sigcontextinfo.h create mode 100644 sysdeps/unix/sysv/linux/arc/swapcontext.S create mode 100644 sysdeps/unix/sysv/linux/arc/sys/cachectl.h create mode 100644 sysdeps/unix/sysv/linux/arc/sys/ucontext.h create mode 100644 sysdeps/unix/sysv/linux/arc/sys/user.h create mode 100644 sysdeps/unix/sysv/linux/arc/ucontext-macros.h create mode 100644 sysdeps/unix/sysv/linux/arc/ucontext_i.sym diff --git a/ChangeLog b/ChangeLog index b5da8c28e64c..e0f2c3372e31 100644 --- a/ChangeLog +++ b/ChangeLog @@ -52,6 +52,21 @@ * sysdeps/unix/sysv/linux/arc/sysdep.c: New file. * sysdeps/unix/sysv/linux/arc/sysdep.h: New file. * sysdeps/unix/sysv/linux/arc/vfork.S: New file. + * sysdeps/arc/nptl/pthread-offsets.h: New file. + * sysdeps/arc/nptl/pthreaddef.h: New file. + * sysdeps/unix/sysv/linux/arc/bits/procfs.h: New file. + * sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h: New file. + * sysdeps/unix/sysv/linux/arc/getcontext.S: New file. + * sysdeps/unix/sysv/linux/arc/ipc_priv.h: New file. + * sysdeps/unix/sysv/linux/arc/makecontext.c: New file. + * sysdeps/unix/sysv/linux/arc/setcontext.S: New file. + * sysdeps/unix/sysv/linux/arc/sigcontextinfo.h: New file. + * sysdeps/unix/sysv/linux/arc/swapcontext.S: New file. + * sysdeps/unix/sysv/linux/arc/sys/cachectl.h: New file. + * sysdeps/unix/sysv/linux/arc/sys/ucontext.h: New file. + * sysdeps/unix/sysv/linux/arc/sys/user.h: New file. + * sysdeps/unix/sysv/linux/arc/ucontext-macros.h: New file. + * sysdeps/unix/sysv/linux/arc/ucontext_i.sym: New file. 2019-01-25 Siddhesh Poyarekar diff --git a/sysdeps/arc/nptl/pthread-offsets.h b/sysdeps/arc/nptl/pthread-offsets.h new file mode 100644 index 000000000000..9617354dc7e3 --- /dev/null +++ b/sysdeps/arc/nptl/pthread-offsets.h @@ -0,0 +1,5 @@ +#define __PTHREAD_MUTEX_NUSERS_OFFSET 16 +#define __PTHREAD_MUTEX_KIND_OFFSET 12 +#define __PTHREAD_MUTEX_SPINS_OFFSET 20 +#define __PTHREAD_MUTEX_ELISION_OFFSET 22 +#define __PTHREAD_MUTEX_LIST_OFFSET 20 diff --git a/sysdeps/arc/nptl/pthreaddef.h b/sysdeps/arc/nptl/pthreaddef.h new file mode 100644 index 000000000000..80a109bbd52a --- /dev/null +++ b/sysdeps/arc/nptl/pthreaddef.h @@ -0,0 +1,32 @@ +/* pthread machine parameter definitions, ARC version. + Copyright (C) 2002-2019 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 + . */ + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 4 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 4 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) diff --git a/sysdeps/unix/sysv/linux/arc/bits/procfs.h b/sysdeps/unix/sysv/linux/arc/bits/procfs.h new file mode 100644 index 000000000000..b37deaee5873 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/bits/procfs.h @@ -0,0 +1,35 @@ +/* Types for registers for sys/procfs.h. ARC version. + Copyright (C) 1996-2019 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 _SYS_PROCFS_H +# error "Never include directly; use instead." +#endif + +#include + +/* And the whole bunch of them. We could have used `struct + user_regs' directly in the typedef, but tradition says that + the register set is an array, which does have some peculiar + semantics, so leave it that way. */ +#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t)) + +typedef unsigned long int elf_greg_t; +typedef unsigned long int elf_gregset_t[ELF_NGREG]; + +/* There's no seperate floating point reg file in ARCv2. */ +typedef struct { } elf_fpregset_t; diff --git a/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h b/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h new file mode 100644 index 000000000000..795638a30bd3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h @@ -0,0 +1,12 @@ +/* Architecture-specific __sigset_t definition. ARC version. */ +#ifndef ____sigset_t_defined +#define ____sigset_t_defined + +/* Linux asm-generic syscall ABI expects sigset_t to hold 64 signals. */ +#define _SIGSET_NWORDS (64 / (8 * sizeof (unsigned long int))) +typedef struct +{ + unsigned long int __val[_SIGSET_NWORDS]; +} __sigset_t; + +#endif diff --git a/sysdeps/unix/sysv/linux/arc/getcontext.S b/sysdeps/unix/sysv/linux/arc/getcontext.S new file mode 100644 index 000000000000..723cc237d87f --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/getcontext.S @@ -0,0 +1,63 @@ +/* Save current context for ARC. + Copyright (C) 2009-2019 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 "ucontext-macros.h" + +/* int getcontext (ucontext_t *ucp) + Save machine context in @ucp and return 0 on success, -1 on error + - saves callee saved registers only + - layout mandated by uncontext_t:m_context (hence different from setjmp). */ + +ENTRY (__getcontext) + + /* Callee saved registers. */ + SAVE_REG (r13, r0, 37) + SAVE_REG (r14, r0, 36) + SAVE_REG (r15, r0, 35) + SAVE_REG (r16, r0, 34) + SAVE_REG (r17, r0, 33) + SAVE_REG (r18, r0, 32) + SAVE_REG (r19, r0, 31) + SAVE_REG (r20, r0, 30) + SAVE_REG (r21, r0, 29) + SAVE_REG (r22, r0, 28) + SAVE_REG (r23, r0, 27) + SAVE_REG (r24, r0, 26) + SAVE_REG (r25, r0, 25) + + SAVE_REG (blink, r0, 7) + SAVE_REG (fp, r0, 8) + SAVE_REG (sp, r0, 23) + + /* Save 0 in r0 placeholder to return 0 when this @ucp activated. */ + mov r9, 0 + SAVE_REG (r9, r0, 22) + + /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8). */ + mov r3, _NSIG8 + add r2, r0, UCONTEXT_SIGMASK + mov r1, 0 + mov r0, SIG_BLOCK + mov r8, __NR_rt_sigprocmask + ARC_TRAP_INSN + brhi r0, -1024, .Lcall_syscall_err + j.d [blink] + mov r0, 0 /* Success, error handled in .Lcall_syscall_err. */ + +PSEUDO_END (__getcontext) +weak_alias (__getcontext, getcontext) diff --git a/sysdeps/unix/sysv/linux/arc/ipc_priv.h b/sysdeps/unix/sysv/linux/arc/ipc_priv.h new file mode 100644 index 000000000000..309eb3064e9f --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ipc_priv.h @@ -0,0 +1,21 @@ +/* Old SysV permission definition for Linux. ARC version. + Copyright (C) 2016-2019 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 /* For __key_t */ + +#define __IPC_64 0x0 diff --git a/sysdeps/unix/sysv/linux/arc/makecontext.c b/sysdeps/unix/sysv/linux/arc/makecontext.c new file mode 100644 index 000000000000..3d46452e1755 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/makecontext.c @@ -0,0 +1,75 @@ +/* Create new context for ARC. + Copyright (C) 2015-2019 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 +#include +#include + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __startcontext (void) attribute_hidden; + unsigned long int sp, *r; + va_list vl; + int i, reg_args, stack_args; + + sp = ((unsigned long int) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & ~7; + + ucp->uc_mcontext.__scratch.__sp = sp; + ucp->uc_mcontext.__scratch.__fp = 0; + + /* __startcontext is sort of trampoline to invoke @func + From setcontext() pov, the resume address is __startcontext, + set it up in BLINK place holder. */ + + ucp->uc_mcontext.__scratch.__blink = (unsigned long int) &__startcontext; + + /* __startcontext passed 2 types of args + - args to @func setup in canonical r0-r7 + - @func itself in r9, and next function in r10. */ + + ucp->uc_mcontext.__callee.__r13 = (unsigned long int) func; + ucp->uc_mcontext.__callee.__r14 = (unsigned long int) ucp->uc_link; + + r = &ucp->uc_mcontext.__scratch.__r0; + + va_start (vl, argc); + + reg_args = argc > 8 ? 8 : argc; + for (i = 0; i < reg_args; i++) { + *r-- = va_arg(vl, unsigned long int); + } + + stack_args = argc - reg_args; + + if (__glibc_unlikely (stack_args > 0)) { + + sp -= stack_args * sizeof (unsigned long int); + ucp->uc_mcontext.__scratch.__sp = sp; + r = (unsigned long int *)sp; + + for (i = 0; i < stack_args; i++) { + *r++ = va_arg(vl, unsigned long int); + } + } + + va_end (vl); +} + +weak_alias (__makecontext, makecontext) diff --git a/sysdeps/unix/sysv/linux/arc/setcontext.S b/sysdeps/unix/sysv/linux/arc/setcontext.S new file mode 100644 index 000000000000..8cf4ffcaf5ac --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/setcontext.S @@ -0,0 +1,92 @@ +/* Set current context for ARC. + Copyright (C) 2009-2019 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 "ucontext-macros.h" + +/* int setcontext (const ucontext_t *ucp) + - Restores the machine context in @ucp and resumes execution + (doesn't return to caller). */ + +ENTRY (__setcontext) + + mov r9, r0 /* Stash @ucp across syscall. */ + + /* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */ + mov r3, _NSIG8 + mov r2, 0 + add r1, r0, UCONTEXT_SIGMASK + mov r0, SIG_SETMASK + mov r8, __NR_rt_sigprocmask + ARC_TRAP_INSN + brhi r0, -1024, .Lcall_syscall_err + + /* Restore scratch/arg regs for makecontext() case. */ + LOAD_REG (r0, r9, 22) + LOAD_REG (r1, r9, 21) + LOAD_REG (r2, r9, 20) + LOAD_REG (r3, r9, 19) + LOAD_REG (r4, r9, 18) + LOAD_REG (r5, r9, 17) + LOAD_REG (r6, r9, 16) + LOAD_REG (r7, r9, 15) + + /* Restore callee saved registers. */ + LOAD_REG (r13, r9, 37) + LOAD_REG (r14, r9, 36) + LOAD_REG (r15, r9, 35) + LOAD_REG (r16, r9, 34) + LOAD_REG (r17, r9, 33) + LOAD_REG (r18, r9, 32) + LOAD_REG (r19, r9, 31) + LOAD_REG (r20, r9, 30) + LOAD_REG (r21, r9, 29) + LOAD_REG (r22, r9, 28) + LOAD_REG (r23, r9, 27) + LOAD_REG (r24, r9, 26) + LOAD_REG (r25, r9, 25) + + LOAD_REG (blink, r9, 7) + LOAD_REG (fp, r9, 8) + LOAD_REG (sp, r9, 23) + + j [blink] + +PSEUDO_END (__setcontext) +weak_alias (__setcontext, setcontext) + + +/* Helper for activating makecontext() created context + - r13 has @func, r14 has uc_link. */ + +ENTRY (__startcontext) + + .cfi_label .Ldummy + cfi_undefined (blink) + + /* Call user @func, loaded in r13 by setcontext(). */ + jl [r13] + + /* If uc_link (r14) call setcontext with that. */ + mov r0, r14 + breq r0, 0, 1f + + bl __setcontext +1: + /* Exit with status 0. */ + b HIDDEN_JUMPTARGET(exit) +END (__startcontext) diff --git a/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h b/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h new file mode 100644 index 000000000000..acf03c6afd97 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h @@ -0,0 +1,23 @@ +/* ARC definitions for signal handling calling conventions. + Copyright (C) 2017-2019 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 "kernel-features.h" + +#define SIGCONTEXT int _code, struct ucontext_t * +#define GET_PC(ctx) ((void *) (ctx)->uc_mcontext.__scratch.__ret) diff --git a/sysdeps/unix/sysv/linux/arc/swapcontext.S b/sysdeps/unix/sysv/linux/arc/swapcontext.S new file mode 100644 index 000000000000..853d3805de65 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/swapcontext.S @@ -0,0 +1,92 @@ +/* Save and set current context for ARC. + Copyright (C) 2009-2019 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 "ucontext-macros.h" + +/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp). */ + +ENTRY (__swapcontext) + + /* Save context into @oucp pointed to by r0. */ + + SAVE_REG (r13, r0, 37) + SAVE_REG (r14, r0, 36) + SAVE_REG (r15, r0, 35) + SAVE_REG (r16, r0, 34) + SAVE_REG (r17, r0, 33) + SAVE_REG (r18, r0, 32) + SAVE_REG (r19, r0, 31) + SAVE_REG (r20, r0, 30) + SAVE_REG (r21, r0, 29) + SAVE_REG (r22, r0, 28) + SAVE_REG (r23, r0, 27) + SAVE_REG (r24, r0, 26) + SAVE_REG (r25, r0, 25) + + SAVE_REG (blink, r0, 7) + SAVE_REG (fp, r0, 8) + SAVE_REG (sp, r0, 23) + + /* Save 0 in r0 placeholder to return 0 when @oucp activated. */ + mov r9, 0 + SAVE_REG (r9, r0, 22) + + /* Load context from @ucp. */ + + mov r9, r1 /* Safekeep @ucp across syscall. */ + + /* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */ + mov r3, _NSIG8 + add r2, r0, UCONTEXT_SIGMASK + add r1, r1, UCONTEXT_SIGMASK + mov r0, SIG_SETMASK + mov r8, __NR_rt_sigprocmask + ARC_TRAP_INSN + brhi r0, -1024, .Lcall_syscall_err + + LOAD_REG (r0, r9, 22) + LOAD_REG (r1, r9, 21) + LOAD_REG (r2, r9, 20) + LOAD_REG (r3, r9, 19) + LOAD_REG (r4, r9, 18) + LOAD_REG (r5, r9, 17) + LOAD_REG (r6, r9, 16) + LOAD_REG (r7, r9, 15) + + LOAD_REG (r13, r9, 37) + LOAD_REG (r14, r9, 36) + LOAD_REG (r15, r9, 35) + LOAD_REG (r16, r9, 34) + LOAD_REG (r17, r9, 33) + LOAD_REG (r18, r9, 32) + LOAD_REG (r19, r9, 31) + LOAD_REG (r20, r9, 30) + LOAD_REG (r21, r9, 29) + LOAD_REG (r22, r9, 28) + LOAD_REG (r23, r9, 27) + LOAD_REG (r24, r9, 26) + LOAD_REG (r25, r9, 25) + + LOAD_REG (blink, r9, 7) + LOAD_REG (fp, r9, 8) + LOAD_REG (sp, r9, 23) + + j [blink] + +PSEUDO_END (__swapcontext) +weak_alias (__swapcontext, swapcontext) diff --git a/sysdeps/unix/sysv/linux/arc/sys/cachectl.h b/sysdeps/unix/sysv/linux/arc/sys/cachectl.h new file mode 100644 index 000000000000..2d93e49e6a99 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/cachectl.h @@ -0,0 +1,36 @@ +/* cacheflush - flush contents of instruction and/or data cache. + Copyright (C) 2017-2019 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 _SYS_CACHECTL_H +#define _SYS_CACHECTL_H 1 + +#include + +/* Get the kernel definition for the op bits. */ +#include + +__BEGIN_DECLS + +#ifdef __USE_MISC +extern int cacheflush (void *__addr, const int __nbytes, const int __op) __THROW; +#endif +extern int _flush_cache (char *__addr, const int __nbytes, const int __op) __THROW; + +__END_DECLS + +#endif /* sys/cachectl.h */ diff --git a/sysdeps/unix/sysv/linux/arc/sys/ucontext.h b/sysdeps/unix/sysv/linux/arc/sys/ucontext.h new file mode 100644 index 000000000000..7e357bcd65e1 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/ucontext.h @@ -0,0 +1,63 @@ +/* struct ucontext definition, ARC version. + Copyright (C) 2017-2019 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 + . */ + +/* System V/ARC ABI compliant context switching support. */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include + +#include +#include + +typedef struct + { + unsigned long int __pad; + struct { + unsigned long int __bta; + unsigned long int __lp_start, __lp_end, __lp_count; + unsigned long int __status32, __ret, __blink; + unsigned long int __fp, __gp; + unsigned long int __r12, __r11, __r10, __r9, __r8, __r7; + unsigned long int __r6, __r5, __r4, __r3, __r2, __r1, __r0; + unsigned long int __sp; + } __scratch; + unsigned long int __pad2; + struct { + unsigned long int __r25, __r24, __r23, __r22, __r21, __r20; + unsigned long int __r19, __r18, __r17, __r16, __r15, __r14, __r13; + } __callee; + unsigned long int __efa; + unsigned long int __stop_pc; + unsigned long int __r30, __r58, __r59; + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long int __uc_flags; + struct ucontext_t *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + sigset_t uc_sigmask; + } ucontext_t; + +#undef __ctx + +#endif /* sys/ucontext.h */ diff --git a/sysdeps/unix/sysv/linux/arc/sys/user.h b/sysdeps/unix/sysv/linux/arc/sys/user.h new file mode 100644 index 000000000000..50d0dc7827a0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/user.h @@ -0,0 +1,31 @@ +/* ptrace register data format definitions. + Copyright (C) 1998-2019 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 _SYS_USER_H +#define _SYS_USER_H 1 + +/* Struct user_regs_struct is exported by kernel header + However apps like strace also expect a struct user, so it's better to + have a dummy implementation. */ +#include + +struct user { + int dummy; +}; + +#endif /* sys/user.h */ diff --git a/sysdeps/unix/sysv/linux/arc/ucontext-macros.h b/sysdeps/unix/sysv/linux/arc/ucontext-macros.h new file mode 100644 index 000000000000..ed261399c987 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ucontext-macros.h @@ -0,0 +1,29 @@ +/* Macros for ucontext routines, ARC version. + Copyright (C) 2017-2019 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 _LINUX_ARC_UCONTEXT_MACROS_H +#define _LINUX_ARC_UCONTEXT_MACROS_H + +#include + +#include "ucontext_i.h" + +#define SAVE_REG(reg, rbase, off) st reg, [rbase, UCONTEXT_MCONTEXT + off * 4] +#define LOAD_REG(reg, rbase, off) ld reg, [rbase, UCONTEXT_MCONTEXT + off * 4] + +#endif diff --git a/sysdeps/unix/sysv/linux/arc/ucontext_i.sym b/sysdeps/unix/sysv/linux/arc/ucontext_i.sym new file mode 100644 index 000000000000..d84e92f9f543 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ucontext_i.sym @@ -0,0 +1,20 @@ +#include +#include +#include +#include + +SIG_BLOCK +SIG_SETMASK + +-- sizeof(sigset_t) expected by kernel: see comment in ARC sigaction.c for details +_NSIG8 (_NSIG / 8) + +-- Offsets of the fields in the ucontext_t structure. +#define ucontext(member) offsetof (ucontext_t, member) + +UCONTEXT_FLAGS ucontext (__uc_flags) +UCONTEXT_LINK ucontext (uc_link) +UCONTEXT_STACK ucontext (uc_stack) +UCONTEXT_MCONTEXT ucontext (uc_mcontext) +UCONTEXT_SIGMASK ucontext (uc_sigmask) +UCONTEXT_SIZE sizeof (ucontext_t)