@@ -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@codesourcery.com>
new file mode 100644
@@ -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
new file mode 100644
@@ -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)
new file mode 100644
@@ -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;
new file mode 100644
@@ -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;
new file mode 100644
@@ -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
new file mode 100644
@@ -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)
new file mode 100644
@@ -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)
new file mode 100644
@@ -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)
new file mode 100644
@@ -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)
new file mode 100644
@@ -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)
new file mode 100644
@@ -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 */
new file mode 100644
@@ -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 */
new file mode 100644
@@ -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 */
new file mode 100644
@@ -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
new file mode 100644
@@ -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)