Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> --- ChangeLog | 15 +++++ sysdeps/arc/nptl/pthread-offsets.h | 5 ++ sysdeps/arc/nptl/pthreaddef.h | 32 +++++++++ sysdeps/unix/sysv/linux/arc/bits/procfs-id.h | 25 +++++++ sysdeps/unix/sysv/linux/arc/bits/procfs.h | 35 ++++++++++ sysdeps/unix/sysv/linux/arc/bits/sigaction.h | 85 ++++++++++++++++++++++++ sysdeps/unix/sysv/linux/arc/getcontext.S | 65 +++++++++++++++++++ sysdeps/unix/sysv/linux/arc/makecontext.c | 74 +++++++++++++++++++++ sysdeps/unix/sysv/linux/arc/setcontext.S | 93 +++++++++++++++++++++++++++ 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 | 71 ++++++++++++++++++++ sysdeps/unix/sysv/linux/arc/sys/user.h | 32 +++++++++ sysdeps/unix/sysv/linux/arc/ucontext-macros.h | 29 +++++++++ sysdeps/unix/sysv/linux/arc/ucontext_i.sym | 20 ++++++ 16 files changed, 732 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-id.h create mode 100644 sysdeps/unix/sysv/linux/arc/bits/procfs.h create mode 100644 sysdeps/unix/sysv/linux/arc/bits/sigaction.h create mode 100644 sysdeps/unix/sysv/linux/arc/getcontext.S 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 08a3ac7e8064..ca010c356597 100644 --- a/ChangeLog +++ b/ChangeLog @@ -56,6 +56,21 @@ * 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-id.h: New file. + * sysdeps/unix/sysv/linux/arc/bits/procfs.h: New file. + * sysdeps/unix/sysv/linux/arc/bits/sigaction.h: New file. + * sysdeps/unix/sysv/linux/arc/getcontext.S: 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. 2018-12-17 Joseph Myers <joseph@xxxxxxxxxxxxxxxx> 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..41e13c53038c --- /dev/null +++ b/sysdeps/arc/nptl/pthreaddef.h @@ -0,0 +1,32 @@ +/* pthread machine parameter definitions, ARC version. + Copyright (C) 2002-2018 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 + <http://www.gnu.org/licenses/>. */ + +/* 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-id.h b/sysdeps/unix/sysv/linux/arc/bits/procfs-id.h new file mode 100644 index 000000000000..d0192fcbc36e --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/bits/procfs-id.h @@ -0,0 +1,25 @@ +/* Types of pr_uid and pr_gid in struct elf_prpsinfo. ARC version. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_PROCFS_H +# error "Never include <bits/procfs-id.h> directly; use <sys/procfs.h> instead." +#endif + +typedef unsigned short int __pr_uid_t; +typedef unsigned short int __pr_gid_t; 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..a3315beddb37 --- /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) 1996-2018 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_PROCFS_H +# error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead." +#endif + +#include <sys/ucontext.h> + +/* 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/sigaction.h b/sysdeps/unix/sysv/linux/arc/bits/sigaction.h new file mode 100644 index 000000000000..47e86c06ce98 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/bits/sigaction.h @@ -0,0 +1,85 @@ +/* The proper definitions for Linux's sigaction. + Copyright (C) 1993-2018 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _BITS_SIGACTION_H +#define _BITS_SIGACTION_H 1 + +#ifndef _SIGNAL_H +# error "Never include <bits/sigaction.h> directly; use <signal.h> instead." +#endif + +/* Structure describing the action to be taken when a signal arrives. + * The generic struct is NOT ABI compatible with asm-generic Linux syscall variant*/ + +struct sigaction + { + /* Signal handler. */ +#if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED + union + { + /* Used if SA_SIGINFO is not set. */ + __sighandler_t sa_handler; + /* Used if SA_SIGINFO is set. */ + void (*sa_sigaction) (int, siginfo_t *, void *); + } + __sigaction_handler; +# define sa_handler __sigaction_handler.sa_handler +# define sa_sigaction __sigaction_handler.sa_sigaction +#else + __sighandler_t sa_handler; +#endif + + /* Special flags. */ + int sa_flags; + + /* Restore handler. */ + void (*sa_restorer) (void); + + /* Additional set of signals to be blocked. */ + __sigset_t sa_mask; + }; + +/* Bits in `sa_flags'. */ +#define SA_NOCLDSTOP 1 /* Don't send SIGCHLD when children stop. */ +#define SA_NOCLDWAIT 2 /* Don't create zombie on child death. */ +#define SA_SIGINFO 4 /* Invoke signal-catching function with + three arguments instead of one. */ +#if defined __USE_XOPEN_EXTENDED || defined __USE_MISC +# define SA_ONSTACK 0x08000000 /* Use signal stack by using `sa_restorer'. */ +#endif +#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8 +# define SA_RESTART 0x10000000 /* Restart syscall on signal return. */ +# define SA_NODEFER 0x40000000 /* Don't automatically block the signal when + its handler is being executed. */ +# define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler. */ +#endif +#ifdef __USE_MISC +# define SA_INTERRUPT 0x20000000 /* Historical no-op. */ + +/* Some aliases for the SA_ constants. */ +# define SA_NOMASK SA_NODEFER +# define SA_ONESHOT SA_RESETHAND +# define SA_STACK SA_ONSTACK +#endif + +/* Values for the HOW argument to `sigprocmask'. */ +#define SIG_BLOCK 0 /* Block signals. */ +#define SIG_UNBLOCK 1 /* Unblock signals. */ +#define SIG_SETMASK 2 /* Set the set of blocked signals. */ + +#endif \ No newline at end of file diff --git a/sysdeps/unix/sysv/linux/arc/getcontext.S b/sysdeps/unix/sysv/linux/arc/getcontext.S new file mode 100644 index 000000000000..af31f581e846 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/getcontext.S @@ -0,0 +1,65 @@ +/* Save current context for ARC + Copyright (C) 2009-2018 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 + <http://www.gnu.org/licenses/>. */ + +#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 case handled in .Lcall_syscall_err + +PSEUDO_END(__getcontext) +weak_alias(__getcontext, getcontext) diff --git a/sysdeps/unix/sysv/linux/arc/makecontext.c b/sysdeps/unix/sysv/linux/arc/makecontext.c new file mode 100644 index 000000000000..7018bed9d64a --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/makecontext.c @@ -0,0 +1,74 @@ +/* Create new context for ARC + Copyright (C) 2015-2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <stdarg.h> +#include <stdint.h> +#include <sys/ucontext.h> + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __startcontext (void) attribute_hidden; + unsigned long sp, *r; + va_list vl; + int i, reg_args, stack_args; + + sp = ((unsigned long) 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) &__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) func; + ucp->uc_mcontext.callee.r14 = (unsigned long) 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); + } + + stack_args = argc - reg_args; + + if (__glibc_unlikely(stack_args > 0)) { + + sp -= stack_args * sizeof (unsigned long); + ucp->uc_mcontext.scratch.sp = sp; + r = (unsigned long *)sp; + + for (i = 0; i < stack_args; i++) { + *r++ = va_arg(vl, unsigned long); + } + } + + 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..3f503c661d95 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/setcontext.S @@ -0,0 +1,93 @@ +/* Set current context for ARC + Copyright (C) 2009-2018 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 + <http://www.gnu.org/licenses/>. */ + +#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) + + /* 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..852bbd96d47f --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h @@ -0,0 +1,23 @@ +/* ARC definitions for signal handling calling conventions. + Copyright (C) 2017-2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <sys/ucontext.h> +#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..ad6bf70ab5e2 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/swapcontext.S @@ -0,0 +1,92 @@ +/* Save and set current context for ARC + Copyright (C) 2009-2018 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 + <http://www.gnu.org/licenses/>. */ + +#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..c2ba820e50b7 --- /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) 2017-2018 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_CACHECTL_H +#define _SYS_CACHECTL_H 1 + +#include <features.h> + +/* Get the kernel definition for the op bits. */ +#include <asm/cachectl.h> + +__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..e91abc3d9fba --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/ucontext.h @@ -0,0 +1,71 @@ +/* struct ucontext definition, ARC version. + Copyright (C) 2017-2018 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 + <http://www.gnu.org/licenses/>. */ + +/* System V/ARC ABI compliant context switching support. */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types/sigset_t.h> +#include <bits/types/stack_t.h> + +#ifdef __USE_MISC +# define __ctx(fld) fld +#else +# define __ctx(fld) __ ## fld +#endif + +typedef struct + { + unsigned long __ctx(pad); + struct { + unsigned long __ctx(bta); + unsigned long __ctx(lp_start), __ctx(lp_end), __ctx(lp_count); + unsigned long __ctx(status32), __ctx(ret), __ctx(blink); + unsigned long __ctx(fp), __ctx(gp); + unsigned long __ctx(r12), __ctx(r11), __ctx(r10), __ctx(r9), __ctx(r8); + unsigned long __ctx(r7), __ctx(r6), __ctx(r5), __ctx(r4), __ctx(r3); + unsigned long __ctx(r2), __ctx(r1), __ctx(r0); + unsigned long __ctx(sp); + } __ctx(scratch); + unsigned long __ctx(pad2); + struct { + unsigned long __ctx(r25), __ctx(r24), __ctx(r23), __ctx(r22), __ctx(r21); + unsigned long __ctx(r20), __ctx(r19), __ctx(r18), __ctx(r17), __ctx(r16); + unsigned long __ctx(r15), __ctx(r14), __ctx(r13); + } __ctx(callee); + unsigned long __ctx(efa); + unsigned long __ctx(stop_pc); + unsigned long __ctx(r30), __ctx(r58), __ctx(r59); + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long __ctx(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..1f7129799bf6 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/user.h @@ -0,0 +1,32 @@ +/* ptrace register data format definitions. + Copyright (C) 1998-2018 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 + <http://www.gnu.org/licenses/>. */ + +#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 <asm/ptrace.h> + +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..a5d861476f3c --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ucontext-macros.h @@ -0,0 +1,29 @@ +/* Macros for ucontext routines - ARC + Copyright (C) 2017-2018 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _LINUX_ARC_UCONTEXT_MACROS_H +#define _LINUX_ARC_UCONTEXT_MACROS_H + +#include <sysdep.h> + +#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..f0a209e581ab --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ucontext_i.sym @@ -0,0 +1,20 @@ +#include <inttypes.h> +#include <signal.h> +#include <stddef.h> +#include <sys/ucontext.h> + +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) -- 2.7.4 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
