@@ -39,6 +39,19 @@
* sysdeps/arc/nofpu/math-tests-exceptions.h: New file.
* sysdeps/arc/nofpu/math-tests-rounding.h: New file.
* sysdeps/arc/sfp-machine.h: New file.
+ * sysdeps/unix/sysv/linux/arc/clone.S: New file.
+ * sysdeps/unix/sysv/linux/arc/jmp_buf-macros.h: New file.
+ * sysdeps/unix/sysv/linux/arc/kernel-features.h: New file.
+ * sysdeps/unix/sysv/linux/arc/mmap_internal.h: New file.
+ * sysdeps/unix/sysv/linux/arc/profil-counter.h: New file.
+ * sysdeps/unix/sysv/linux/arc/pt-vfork.S: New file.
+ * sysdeps/unix/sysv/linux/arc/sigaction.c: New file.
+ * sysdeps/unix/sysv/linux/arc/sigrestorer.S: New file.
+ * sysdeps/unix/sysv/linux/arc/syscall.S: New file.
+ * sysdeps/unix/sysv/linux/arc/syscalls.list: New file.
+ * 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.
2019-01-25 Siddhesh Poyarekar <siddhesh@sourceware.org>
new file mode 100644
@@ -0,0 +1,98 @@
+/* clone() implementation for ARC.
+ Copyright (C) 2008-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andrew Jenner <andrew@codesourcery.com>, 2008.
+
+ 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>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <tcb-offsets.h>
+
+#define CLONE_SETTLS 0x00080000
+
+/* int clone(int (*fn)(void *), void *child_stack,
+ int flags, void *arg, ...
+ < pid_t *ptid, struct user_desc *tls, pid_t *ctid > );
+
+ NOTE: I'm assuming that the last 3 args are NOT var-args and in case all
+ 3 are not relevant, caller will nevertheless pass those as NULL.
+
+ clone syscall in kernel (ABI: CONFIG_CLONE_BACKWARDS)
+
+ int sys_clone(unsigned long int clone_flags,
+ unsigned long int newsp,
+ int __user *parent_tidptr,
+ void *tls,
+ int __user *child_tidptr). */
+
+ENTRY (__clone)
+ cmp r0, 0 ; @fn can't be NULL
+ cmp.ne r1, 0 ; @child_stack can't be NULL
+ bz .L__sys_err
+
+ ; save some of the orig args
+ ; r0 containg @fn will be clobbered AFTER syscall (with ret val)
+ ; rest are clobbered BEFORE syscall due to different arg ordering
+ mov r10, r0 ; @fn
+ mov r11, r3 ; @args
+ mov r12, r2 ; @clone_flags
+ mov r9, r5 ; @tls
+
+ ; adjust libc args for syscall
+
+ mov r0, r2 ; libc @flags is 1st syscall arg
+ mov r2, r4 ; libc @ptid
+ mov r3, r5 ; libc @tls
+ mov r4, r6 ; libc @ctid
+ mov r8, __NR_clone
+ ARC_TRAP_INSN
+
+ cmp r0, 0 ; return code : 0 new process, !0 parent
+ blt .L__sys_err2 ; < 0 (signed) error
+ jnz [blink] ; Parent returns
+
+ ; ----- child starts here ---------
+
+ ; Setup TP register (only recent kernels v4.19+ do that)
+ and.f 0, r12, CLONE_SETTLS
+ mov.nz r25, r9
+
+ ; child jumps off to @fn with @arg as argument, and returns here
+ jl.d [r10]
+ mov r0, r11
+
+ ; exit() with result from @fn (already in r0)
+ mov r8, __NR_exit
+ ARC_TRAP_INSN
+ ; In case it ever came back
+ flag 1
+
+.L__sys_err:
+ mov r0, -EINVAL
+.L__sys_err2:
+ ; (1) No need to make -ve kernel error code as positive errno
+ ; __syscall_error expects the -ve error code returned by kernel
+ ; (2) r0 still had orig -ve kernel error code
+ ; (3) Tail call to __syscall_error so we dont have to come back
+ ; here hence instead of jmp-n-link (reg push/pop) we do jmp
+ ; (4) No need to route __syscall_error via PLT, B is inherently
+ ; position independent
+ b __syscall_error
+PSEUDO_END (__clone)
+libc_hidden_def (__clone)
+weak_alias (__clone, clone)
new file mode 100644
@@ -0,0 +1,6 @@
+#define JMP_BUF_SIZE (32 + 1 + 64/(8 * sizeof (unsigned long int))) * sizeof (unsigned long int)
+#define SIGJMP_BUF_SIZE (32 + 1 + 64/(8 * sizeof (unsigned long int))) * sizeof (unsigned long int)
+#define JMP_BUF_ALIGN __alignof__ (unsigned long int)
+#define SIGJMP_BUF_ALIGN __alignof__ (unsigned long int)
+#define MASK_WAS_SAVED_OFFSET (32 * sizeof (unsigned long int))
+#define SAVED_MASK_OFFSET (33 * sizeof (unsigned long int))
new file mode 100644
@@ -0,0 +1,28 @@
+/* Set flags signalling availability of kernel features based on given
+ kernel version number.
+
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+/* The minimum supported kernel version for ARC is 3.9,
+ guaranteeing many kernel features. */
+
+#include_next <kernel-features.h>
+
+#undef __ASSUME_CLONE_DEFAULT
+#define __ASSUME_CLONE_BACKWARDS 1
new file mode 100644
@@ -0,0 +1,27 @@
+/* mmap - map files or devices into memory. Linux/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
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef MMAP_ARC_INTERNAL_H
+#define MMAP_ARC_INTERNAL_H
+
+/* 8K page is default for ARC. */
+#define MMAP2_PAGE_UNIT 8192ULL
+
+#include_next <mmap_internal.h>
+
+#endif
new file mode 100644
@@ -0,0 +1,2 @@
+/* We can use the ix86 version. */
+#include <sysdeps/unix/sysv/linux/i386/profil-counter.h>
new file mode 100644
@@ -0,0 +1 @@
+/* Not needed. */
new file mode 100644
@@ -0,0 +1,31 @@
+/* ARC specific sigaction.
+ Copyright (C) 1997-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+#define SA_RESTORER 0x04000000
+
+extern void __default_rt_sa_restorer (void);
+
+#define SET_SA_RESTORER(kact, act) \
+ ({ \
+ (kact)->sa_restorer = __default_rt_sa_restorer; \
+ (kact)->sa_flags |= SA_RESTORER; \
+ })
+
+#define RESET_SA_RESTORER(act, kact)
+
+#include <sysdeps/unix/sysv/linux/sigaction.c>
new file mode 100644
@@ -0,0 +1,29 @@
+/* Default sigreturn stub for ARC Linux.
+ Copyright (C) 2005-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <sys/syscall.h>
+#include <sysdep.h>
+#include <tcb-offsets.h>
+
+/* Note the NOP has to be outside body. */
+ nop
+ENTRY (__default_rt_sa_restorer)
+ mov r8, __NR_rt_sigreturn
+ ARC_TRAP_INSN
+ j_s [blink]
+PSEUDO_END_NOERRNO (__default_rt_sa_restorer)
new file mode 100644
@@ -0,0 +1,38 @@
+/* syscall - indirect system call.
+ 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+
+ENTRY (syscall)
+ mov_s r8, r0
+ mov_s r0, r1
+ mov_s r1, r2
+ mov_s r2, r3
+ mov_s r3, r4
+#ifdef __ARC700__
+ mov r4, r5
+ mov r5, r6
+#else
+ mov_s r4, r5
+ mov_s r5, r6
+#endif
+
+ ARC_TRAP_INSN
+ brhi r0, -1024, .Lcall_syscall_err
+ j [blink]
+PSEUDO_END (syscall)
new file mode 100644
@@ -0,0 +1,3 @@
+# File name Caller Syscall name Args Strong name Weak names
+
+cacheflush - cacheflush i:pii _flush_cache cacheflush
new file mode 100644
@@ -0,0 +1,33 @@
+/* ARC wrapper for setting errno.
+ Copyright (C) 1997-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+#include <errno.h>
+
+/* All syscall handler come here to avoid generated code bloat due to
+ GOT reference to errno_location or it's equivalent. */
+int
+__syscall_error(int err_no)
+{
+ __set_errno(-err_no);
+ return -1;
+}
+
+#if IS_IN (libc)
+hidden_def (__syscall_error)
+#endif
new file mode 100644
@@ -0,0 +1,251 @@
+/* Assembler macros for ARC.
+ Copyright (C) 2000-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _LINUX_ARC_SYSDEP_H
+#define _LINUX_ARC_SYSDEP_H 1
+
+#include <asm/unistd.h>
+#include <sysdeps/arc/sysdep.h>
+#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
+
+/* For RTLD_PRIVATE_ERRNO. */
+#include <dl-sysdep.h>
+
+#include <tls.h>
+
+#undef SYS_ify
+#define SYS_ify(syscall_name) __NR_##syscall_name
+
+#ifdef __ASSEMBLER__
+
+/* This is a "normal" system call stub: if there is an error,
+ it returns -1 and sets errno. */
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args) \
+ PSEUDO_NOERRNO(name, syscall_name, args) ASM_LINE_SEP \
+ brhi r0, -1024, .Lcall_syscall_err ASM_LINE_SEP
+
+# define ret j [blink]
+
+# undef PSEUDO_END
+# define PSEUDO_END(name) \
+ SYSCALL_ERROR_HANDLER ASM_LINE_SEP \
+ END (name)
+
+/* --------- Helper for SYSCALL_NOERRNO -----------
+ This kind of system call stub never returns an error.
+ We return the return value register to the caller unexamined. */
+
+# undef PSEUDO_NOERRNO
+# define PSEUDO_NOERRNO(name, syscall_name, args) \
+ .text ASM_LINE_SEP \
+ ENTRY (name) ASM_LINE_SEP \
+ DO_CALL (syscall_name, args) ASM_LINE_SEP \
+
+/* Return the return value register unexamined. Since r0 is both
+ syscall return reg and function return reg, no work needed. */
+# define ret_NOERRNO \
+ j_s [blink] ASM_LINE_SEP
+
+# undef PSEUDO_END_NOERRNO
+# define PSEUDO_END_NOERRNO(name) \
+ END (name)
+
+/* --------- Helper for SYSCALL_ERRVAL -----------
+ This kind of system call stub returns the errno code as its return
+ value, or zero for success. We may massage the kernel's return value
+ to meet that ABI, but we never set errno here. */
+
+# undef PSEUDO_ERRVAL
+# define PSEUDO_ERRVAL(name, syscall_name, args) \
+ PSEUDO_NOERRNO(name, syscall_name, args) ASM_LINE_SEP
+
+/* Don't set errno, return kernel error (in errno form) or zero. */
+# define ret_ERRVAL \
+ rsub r0, r0, 0 ASM_LINE_SEP \
+ ret_NOERRNO
+
+# undef PSEUDO_END_ERRVAL
+# define PSEUDO_END_ERRVAL(name) \
+ END (name)
+
+
+/* To reduce the code footprint, we confine the actual errno access
+ to single place in __syscall_error().
+ This takes raw kernel error value, sets errno and returns -1. */
+# if IS_IN (libc)
+# define CALL_ERRNO_SETTER_C bl PLTJMP(HIDDEN_JUMPTARGET(__syscall_error))
+# else
+# define CALL_ERRNO_SETTER_C bl PLTJMP(__syscall_error)
+# endif
+
+# define SYSCALL_ERROR_HANDLER \
+.Lcall_syscall_err: ASM_LINE_SEP \
+ st.a blink, [sp, -4] ASM_LINE_SEP \
+ cfi_adjust_cfa_offset (4) ASM_LINE_SEP \
+ cfi_rel_offset (blink, 0) ASM_LINE_SEP \
+ CALL_ERRNO_SETTER_C ASM_LINE_SEP \
+ ld.ab blink, [sp, 4] ASM_LINE_SEP \
+ cfi_adjust_cfa_offset (-4) ASM_LINE_SEP \
+ cfi_restore (blink) ASM_LINE_SEP \
+ j [blink]
+
+# define DO_CALL(syscall_name, args) \
+ mov r8, SYS_ify (syscall_name) ASM_LINE_SEP \
+ ARC_TRAP_INSN ASM_LINE_SEP
+
+# define ARC_TRAP_INSN trap_s 0
+
+#else /* !__ASSEMBLER__ */
+
+# define SINGLE_THREAD_BY_GLOBAL 1
+
+/* In order to get __set_errno() definition in INLINE_SYSCALL. */
+#include <errno.h>
+
+extern int __syscall_error (int);
+
+# if IS_IN (libc)
+hidden_proto (__syscall_error)
+# define CALL_ERRNO_SETTER "bl __syscall_error \n\t"
+# else
+# define CALL_ERRNO_SETTER "bl __syscall_error@plt \n\t"
+# endif
+
+
+/* Define a macro which expands into the inline wrapper code for a system
+ call. */
+# undef INLINE_SYSCALL
+# define INLINE_SYSCALL(name, nr_args, args...) \
+ ({ \
+ register int __res __asm__("r0"); \
+ __res = INTERNAL_SYSCALL_NCS (__NR_##name, , nr_args, args); \
+ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P ((__res), ), 0)) \
+ { \
+ asm volatile ("st.a blink, [sp, -4] \n\t" \
+ CALL_ERRNO_SETTER \
+ "ld.ab blink, [sp, 4] \n\t" \
+ :"+r" (__res) \
+ : \
+ :"r1","r2","r3","r4","r5","r6", \
+ "r7","r8","r9","r10","r11","r12"); \
+ } \
+ __res; \
+ })
+
+# undef INTERNAL_SYSCALL_DECL
+# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+# undef INTERNAL_SYSCALL_ERRNO
+# define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
+
+/* -1 to -1023 are valid errno values. */
+# undef INTERNAL_SYSCALL_ERROR_P
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned int) (val) > -1024U)
+
+# define ARC_TRAP_INSN "trap_s 0 \n\t"
+
+# undef INTERNAL_SYSCALL_RAW
+# define INTERNAL_SYSCALL_RAW(name, err, nr_args, args...) \
+ ({ \
+ /* Per ABI, r0 is 1st arg and return reg. */ \
+ register int __ret __asm__("r0"); \
+ register int _sys_num __asm__("r8"); \
+ \
+ LOAD_ARGS_##nr_args (name, args) \
+ \
+ __asm__ volatile ( \
+ ARC_TRAP_INSN \
+ : "+r" (__ret) \
+ : "r"(_sys_num) ASM_ARGS_##nr_args \
+ : "memory"); \
+__ret; \
+})
+
+/* Macros for setting up inline __asm__ input regs. */
+# define ASM_ARGS_0
+# define ASM_ARGS_1 ASM_ARGS_0, "r" (__ret)
+# define ASM_ARGS_2 ASM_ARGS_1, "r" (_arg2)
+# define ASM_ARGS_3 ASM_ARGS_2, "r" (_arg3)
+# define ASM_ARGS_4 ASM_ARGS_3, "r" (_arg4)
+# define ASM_ARGS_5 ASM_ARGS_4, "r" (_arg5)
+# define ASM_ARGS_6 ASM_ARGS_5, "r" (_arg6)
+# define ASM_ARGS_7 ASM_ARGS_6, "r" (_arg7)
+
+/* Macros for converting sys-call wrapper args into sys call args. */
+# define LOAD_ARGS_0(nm, arg) \
+ _sys_num = (int) (nm);
+
+# define LOAD_ARGS_1(nm, arg1) \
+ __ret = (int) (arg1); \
+ LOAD_ARGS_0 (nm, arg1)
+
+/* Note that the use of _tmpX might look superflous, however it is needed
+ to ensure that register variables are not clobbered if arg happens to be
+ a function call itself. e.g. sched_setaffinity() calling getpid() for arg2
+ Also this specific order of recursive calling is important to segregate
+ the tmp args evaluation (function call case described above) and assigment
+ of register variables. */
+
+# define LOAD_ARGS_2(nm, arg1, arg2) \
+ int _tmp2 = (int) (arg2); \
+ LOAD_ARGS_1 (nm, arg1) \
+ register int _arg2 __asm__ ("r1") = _tmp2;
+
+# define LOAD_ARGS_3(nm, arg1, arg2, arg3) \
+ int _tmp3 = (int) (arg3); \
+ LOAD_ARGS_2 (nm, arg1, arg2) \
+ register int _arg3 __asm__ ("r2") = _tmp3;
+
+#define LOAD_ARGS_4(nm, arg1, arg2, arg3, arg4) \
+ int _tmp4 = (int) (arg4); \
+ LOAD_ARGS_3 (nm, arg1, arg2, arg3) \
+ register int _arg4 __asm__ ("r3") = _tmp4;
+
+# define LOAD_ARGS_5(nm, arg1, arg2, arg3, arg4, arg5) \
+ int _tmp5 = (int) (arg5); \
+ LOAD_ARGS_4 (nm, arg1, arg2, arg3, arg4) \
+ register int _arg5 __asm__ ("r4") = _tmp5;
+
+# define LOAD_ARGS_6(nm, arg1, arg2, arg3, arg4, arg5, arg6)\
+ int _tmp6 = (int) (arg6); \
+ LOAD_ARGS_5 (nm, arg1, arg2, arg3, arg4, arg5) \
+ register int _arg6 __asm__ ("r5") = _tmp6;
+
+# define LOAD_ARGS_7(nm, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\
+ int _tmp7 = (int) (arg7); \
+ LOAD_ARGS_6 (nm, arg1, arg2, arg3, arg4, arg5, arg6) \
+ register int _arg7 __asm__ ("r6") = _tmp7;
+
+# undef INTERNAL_SYSCALL
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+ INTERNAL_SYSCALL_RAW(SYS_ify(name), err, nr, args)
+
+# undef INTERNAL_SYSCALL_NCS
+# define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
+ INTERNAL_SYSCALL_RAW(number, err, nr, args)
+
+/* Pointer mangling not yet supported. */
+# define PTR_MANGLE(var) (void) (var)
+# define PTR_DEMANGLE(var) (void) (var)
+
+#endif /* !__ASSEMBLER__ */
+
+#endif /* linux/arc/sysdep.h */
new file mode 100644
@@ -0,0 +1,42 @@
+/* vfork for ARC Linux.
+ Copyright (C) 2005-2019 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <sys/syscall.h>
+#include <sysdep.h>
+#include <tcb-offsets.h>
+#define _SIGNAL_H
+#include <bits/signum.h> /* For SIGCHLD */
+
+#define CLONE_VM 0x00000100
+#define CLONE_VFORK 0x00004000
+#define CLONE_FLAGS_FOR_VFORK (CLONE_VM|CLONE_VFORK|SIGCHLD)
+
+ENTRY (__vfork)
+ mov r0, CLONE_FLAGS_FOR_VFORK
+ mov_s r1, sp
+ mov r8, __NR_clone
+ ARC_TRAP_INSN
+
+ cmp r0, 0
+ jge [blink] ; child continues
+
+ b __syscall_error
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)
Signed-off-by: Vineet Gupta <vgupta@synopsys.com> --- ChangeLog | 13 ++ sysdeps/unix/sysv/linux/arc/clone.S | 98 ++++++++++ sysdeps/unix/sysv/linux/arc/jmp_buf-macros.h | 6 + sysdeps/unix/sysv/linux/arc/kernel-features.h | 28 +++ sysdeps/unix/sysv/linux/arc/mmap_internal.h | 27 +++ sysdeps/unix/sysv/linux/arc/profil-counter.h | 2 + sysdeps/unix/sysv/linux/arc/pt-vfork.S | 1 + sysdeps/unix/sysv/linux/arc/sigaction.c | 31 ++++ sysdeps/unix/sysv/linux/arc/sigrestorer.S | 29 +++ sysdeps/unix/sysv/linux/arc/syscall.S | 38 ++++ sysdeps/unix/sysv/linux/arc/syscalls.list | 3 + sysdeps/unix/sysv/linux/arc/sysdep.c | 33 ++++ sysdeps/unix/sysv/linux/arc/sysdep.h | 251 ++++++++++++++++++++++++++ sysdeps/unix/sysv/linux/arc/vfork.S | 42 +++++ 14 files changed, 602 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/arc/clone.S create mode 100644 sysdeps/unix/sysv/linux/arc/jmp_buf-macros.h create mode 100644 sysdeps/unix/sysv/linux/arc/kernel-features.h create mode 100644 sysdeps/unix/sysv/linux/arc/mmap_internal.h create mode 100644 sysdeps/unix/sysv/linux/arc/profil-counter.h create mode 100644 sysdeps/unix/sysv/linux/arc/pt-vfork.S create mode 100644 sysdeps/unix/sysv/linux/arc/sigaction.c create mode 100644 sysdeps/unix/sysv/linux/arc/sigrestorer.S create mode 100644 sysdeps/unix/sysv/linux/arc/syscall.S create mode 100644 sysdeps/unix/sysv/linux/arc/syscalls.list create mode 100644 sysdeps/unix/sysv/linux/arc/sysdep.c create mode 100644 sysdeps/unix/sysv/linux/arc/sysdep.h create mode 100644 sysdeps/unix/sysv/linux/arc/vfork.S