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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2018-02-04 15:34:18 +0000
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2018-03-12 20:11:14 +0100
commit490e84f5e146485a26dea2f41279a4ff13aaca05 (patch)
tree03b9eab7297c5ad571b548b5ed916f17be78bf48 /libc
parent6e627523ee4b3fc00c30dcff74c2adf93e2b6840 (diff)
tile: add basic support for tilegx
This adds basic support for tile architecture. Only static binaries, no ld.so or threading support. Tested with qemu-tilegx only.
Diffstat (limited to 'libc')
-rw-r--r--libc/sysdeps/linux/common/fstat.c2
-rw-r--r--libc/sysdeps/linux/tile/Makefile6
-rw-r--r--libc/sysdeps/linux/tile/Makefile.arch2
-rw-r--r--libc/sysdeps/linux/tile/__longjmp.S54
-rw-r--r--libc/sysdeps/linux/tile/__syscall_error.c14
-rw-r--r--libc/sysdeps/linux/tile/bits/byteswap.h35
-rw-r--r--libc/sysdeps/linux/tile/bits/endian.h11
-rw-r--r--libc/sysdeps/linux/tile/bits/fcntl.h228
-rw-r--r--libc/sysdeps/linux/tile/bits/kernel_types.h45
-rw-r--r--libc/sysdeps/linux/tile/bits/mman.h38
-rw-r--r--libc/sysdeps/linux/tile/bits/setjmp.h34
-rw-r--r--libc/sysdeps/linux/tile/bits/shm.h90
-rw-r--r--libc/sysdeps/linux/tile/bits/sigcontextinfo.h31
-rw-r--r--libc/sysdeps/linux/tile/bits/stackinfo.h11
-rw-r--r--libc/sysdeps/linux/tile/bits/syscalls.h151
-rw-r--r--libc/sysdeps/linux/tile/bits/uClibc_arch_features.h39
-rw-r--r--libc/sysdeps/linux/tile/bits/wordsize.h11
-rw-r--r--libc/sysdeps/linux/tile/clone.S173
-rw-r--r--libc/sysdeps/linux/tile/crt1.S182
-rw-r--r--libc/sysdeps/linux/tile/crti.S68
-rw-r--r--libc/sysdeps/linux/tile/crtn.S54
-rw-r--r--libc/sysdeps/linux/tile/jmpbuf-offsets.h60
-rw-r--r--libc/sysdeps/linux/tile/jmpbuf-unwind.h42
-rw-r--r--libc/sysdeps/linux/tile/setjmp.S44
-rw-r--r--libc/sysdeps/linux/tile/sys/cachectl.h34
-rw-r--r--libc/sysdeps/linux/tile/sys/procfs.h126
-rw-r--r--libc/sysdeps/linux/tile/sys/ptrace.h198
-rw-r--r--libc/sysdeps/linux/tile/sys/reg.h2
-rw-r--r--libc/sysdeps/linux/tile/sys/ucontext.h96
-rw-r--r--libc/sysdeps/linux/tile/sys/user.h1
-rw-r--r--libc/sysdeps/linux/tile/sysdep.h118
-rw-r--r--libc/sysdeps/linux/tile/vfork.S45
32 files changed, 2044 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/fstat.c b/libc/sysdeps/linux/common/fstat.c
index 689259531..53fa82680 100644
--- a/libc/sysdeps/linux/common/fstat.c
+++ b/libc/sysdeps/linux/common/fstat.c
@@ -20,7 +20,7 @@ int fstat(int fd, struct stat *buf)
}
libc_hidden_def(fstat)
-#elif __WORDSIZE == 64 && defined __NR_newfstatat && __aarch64__
+#elif __WORDSIZE == 64 && defined __NR_newfstatat
#include <fcntl.h>
int fstat(int fd, struct stat *buf)
diff --git a/libc/sysdeps/linux/tile/Makefile b/libc/sysdeps/linux/tile/Makefile
new file mode 100644
index 000000000..43dc60a42
--- /dev/null
+++ b/libc/sysdeps/linux/tile/Makefile
@@ -0,0 +1,6 @@
+top_srcdir=../../../../
+top_builddir=../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
diff --git a/libc/sysdeps/linux/tile/Makefile.arch b/libc/sysdeps/linux/tile/Makefile.arch
new file mode 100644
index 000000000..74c074852
--- /dev/null
+++ b/libc/sysdeps/linux/tile/Makefile.arch
@@ -0,0 +1,2 @@
+CSRC-y := __syscall_error.c
+SSRC-y := __longjmp.S setjmp.S vfork.S clone.S
diff --git a/libc/sysdeps/linux/tile/__longjmp.S b/libc/sysdeps/linux/tile/__longjmp.S
new file mode 100644
index 000000000..08724db0a
--- /dev/null
+++ b/libc/sysdeps/linux/tile/__longjmp.S
@@ -0,0 +1,54 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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 <jmpbuf-offsets.h>
+#include <arch/spr_def.h>
+
+/* PL to return to via iret in longjmp */
+#define RETURN_PL 0
+
+ .text
+ENTRY (__longjmp)
+
+#define RESTORE(r) { ld r, r0 ; ADDI_PTR r0, r0, REGSIZE }
+ FOR_EACH_CALLEE_SAVED_REG(RESTORE)
+
+ /* Make longjmp(buf, 0) return "1" instead.
+ At the same time, construct our iret context; we set ICS so
+ we can validly load EX_CONTEXT for iret without being
+ interrupted halfway through. */
+ {
+ ld r2, r0 /* retrieve ICS bit from jmp_buf */
+ movei r3, 1
+ cmpeqi r0, r1, 0
+ }
+ {
+ mtspr INTERRUPT_CRITICAL_SECTION, r3
+ shli r2, r2, SPR_EX_CONTEXT_0_1__ICS_SHIFT
+ }
+ {
+ mtspr EX_CONTEXT_0_0, lr
+ ori r2, r2, RETURN_PL
+ }
+ {
+ or r0, r1, r0
+ mtspr EX_CONTEXT_0_1, r2
+ }
+ iret
+ jrp lr /* Keep the backtracer happy. */
+END (__longjmp)
+libc_hidden_def(__longjmp)
diff --git a/libc/sysdeps/linux/tile/__syscall_error.c b/libc/sysdeps/linux/tile/__syscall_error.c
new file mode 100644
index 000000000..a91fdff3a
--- /dev/null
+++ b/libc/sysdeps/linux/tile/__syscall_error.c
@@ -0,0 +1,14 @@
+/*
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
+ * in this tarball.
+ */
+
+#include <errno.h>
+#include <features.h>
+
+int __syscall_error(int err_no)
+{
+ __set_errno(-err_no);
+ return -1;
+}
+
diff --git a/libc/sysdeps/linux/tile/bits/byteswap.h b/libc/sysdeps/linux/tile/bits/byteswap.h
new file mode 100644
index 000000000..524a35576
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/byteswap.h
@@ -0,0 +1,35 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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/>. */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H
+# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead."
+#endif
+
+#ifndef _BITS_BYTESWAP_H
+#define _BITS_BYTESWAP_H 1
+
+#include <bits/types.h>
+
+/* gcc __builtin_bswap64() can constant-fold, etc, so always use it. */
+#define __bswap_16(x) ((unsigned short)(__builtin_bswap32(x) >> 16))
+#define __bswap_32(x) ((unsigned int)__builtin_bswap32(x))
+#define __bswap_64(x) ((__uint64_t)__builtin_bswap64(x))
+
+#define __bswap_constant_16(x) __bswap_16(x)
+#define __bswap_constant_32(x) __bswap_32(x)
+#define __bswap_constant_64(x) __bswap_64(x)
+
+#endif /* _BITS_BYTESWAP_H */
diff --git a/libc/sysdeps/linux/tile/bits/endian.h b/libc/sysdeps/linux/tile/bits/endian.h
new file mode 100644
index 000000000..835042a7a
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/endian.h
@@ -0,0 +1,11 @@
+/* Set endianness for tile. */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#if defined __BIG_ENDIAN__
+# define __BYTE_ORDER __BIG_ENDIAN
+#else
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
diff --git a/libc/sysdeps/linux/tile/bits/fcntl.h b/libc/sysdeps/linux/tile/bits/fcntl.h
new file mode 100644
index 000000000..3cb4d2caf
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/fcntl.h
@@ -0,0 +1,228 @@
+/* O_*, F_*, FD_* bit values for Linux.
+ *
+ * Licensed under the LGPL v2.1 or later, see the file
+ * COPYING.LIB in this tarball.
+ */
+
+#ifndef _FCNTL_H
+# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
+#endif
+
+#include <sys/types.h>
+#ifdef __USE_GNU
+# include <bits/uio.h>
+#endif
+
+/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
+ located on an ext2 file system */
+#define O_ACCMODE 0003
+#define O_RDONLY 00
+#define O_WRONLY 01
+#define O_RDWR 02
+#define O_CREAT 0100 /* not fcntl */
+#define O_EXCL 0200 /* not fcntl */
+#define O_NOCTTY 0400 /* not fcntl */
+#define O_TRUNC 01000 /* not fcntl */
+#define O_APPEND 02000
+#define O_NONBLOCK 04000
+#define O_NDELAY O_NONBLOCK
+#define O_SYNC 010000
+#define O_FSYNC O_SYNC
+#define O_ASYNC 020000
+
+#ifdef __USE_XOPEN2K8
+# define O_DIRECTORY 0200000 /* Must be a directory. */
+# define O_NOFOLLOW 0400000 /* Do not follow links. */
+# define O_CLOEXEC 02000000 /* Set close_on_exec. */
+#endif
+
+#ifdef __USE_GNU
+# define O_DIRECT 040000 /* Direct disk access. */
+# define O_NOATIME 01000000 /* Do not set atime. */
+# define O_PATH 010000000 /* Resolve pathname but do not open file. */
+#endif
+
+#ifdef __USE_LARGEFILE64
+# define O_LARGEFILE 0100000
+#endif
+
+/* For now Linux has synchronisity options for data and read operations.
+ We define the symbols here but let them do the same as O_SYNC since
+ this is a superset. */
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
+# define O_DSYNC O_SYNC /* Synchronize data. */
+# define O_RSYNC O_SYNC /* Synchronize read operations. */
+#endif
+
+/* Values for the second argument to `fcntl'. */
+#define F_DUPFD 0 /* Duplicate file descriptor. */
+#define F_GETFD 1 /* Get file descriptor flags. */
+#define F_SETFD 2 /* Set file descriptor flags. */
+#define F_GETFL 3 /* Get file status flags. */
+#define F_SETFL 4 /* Set file status flags. */
+
+#ifndef __USE_FILE_OFFSET64
+# define F_GETLK 5 /* Get record locking info. */
+# define F_SETLK 6 /* Set record locking info (non-blocking). */
+# define F_SETLKW 7 /* Set record locking info (blocking). */
+#else
+# define F_GETLK F_GETLK64 /* Get record locking info. */
+# define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/
+# define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */
+#endif
+#define F_GETLK64 12 /* Get record locking info. */
+#define F_SETLK64 13 /* Set record locking info (non-blocking). */
+#define F_SETLKW64 14 /* Set record locking info (blocking). */
+
+#if defined __USE_BSD || defined __USE_XOPEN2K
+# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */
+# define F_GETOWN 9 /* Set owner of socket (receiver of SIGIO). */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETSIG 10 /* Set number of signal to be sent. */
+# define F_GETSIG 11 /* Get number of signal to be sent. */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETLEASE 1024 /* Set a lease. */
+# define F_GETLEASE 1025 /* Enquire what lease is active. */
+# define F_NOTIFY 1026 /* Request notfications on a directory. */
+# define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with
+ close-on-exit set on new fd. */
+# define F_SETPIPE_SZ 1031 /* Set pipe page size array. */
+# define F_GETPIPE_SZ 1032 /* Get pipe page size array. */
+#endif
+
+/* For F_[GET|SET]FL. */
+#define FD_CLOEXEC 1 /* actually anything with low bit set goes */
+
+/* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */
+#define F_RDLCK 0 /* Read lock. */
+#define F_WRLCK 1 /* Write lock. */
+#define F_UNLCK 2 /* Remove lock. */
+
+/* For old implementation of bsd flock(). */
+#define F_EXLCK 4 /* or 3 */
+#define F_SHLCK 8 /* or 4 */
+
+#ifdef __USE_BSD
+/* Operations for bsd flock(), also used by the kernel implementation. */
+# define LOCK_SH 1 /* shared lock */
+# define LOCK_EX 2 /* exclusive lock */
+# define LOCK_NB 4 /* or'd with one of the above to prevent
+ blocking */
+# define LOCK_UN 8 /* remove lock */
+#endif
+
+#ifdef __USE_GNU
+# define LOCK_MAND 32 /* This is a mandatory flock: */
+# define LOCK_READ 64 /* ... which allows concurrent read operations. */
+# define LOCK_WRITE 128 /* ... which allows concurrent write operations. */
+# define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */
+#endif
+
+#ifdef __USE_GNU
+/* Types of directory notifications that may be requested with F_NOTIFY. */
+# define DN_ACCESS 0x00000001 /* File accessed. */
+# define DN_MODIFY 0x00000002 /* File modified. */
+# define DN_CREATE 0x00000004 /* File created. */
+# define DN_DELETE 0x00000008 /* File removed. */
+# define DN_RENAME 0x00000010 /* File renamed. */
+# define DN_ATTRIB 0x00000020 /* File changed attibutes. */
+# define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */
+#endif
+
+struct flock
+ {
+ short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
+ short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
+#ifndef __USE_FILE_OFFSET64
+ __off_t l_start; /* Offset where the lock begins. */
+ __off_t l_len; /* Size of the locked area; zero means until EOF. */
+#else
+ __off64_t l_start; /* Offset where the lock begins. */
+ __off64_t l_len; /* Size of the locked area; zero means until EOF. */
+#endif
+ __pid_t l_pid; /* Process holding the lock. */
+ };
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+ {
+ short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
+ short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
+ __off64_t l_start; /* Offset where the lock begins. */
+ __off64_t l_len; /* Size of the locked area; zero means until EOF. */
+ __pid_t l_pid; /* Process holding the lock. */
+ };
+#endif
+
+/* Define some more compatibility macros to be backward compatible with
+ BSD systems which did not managed to hide these kernel macros. */
+#ifdef __USE_BSD
+# define FAPPEND O_APPEND
+# define FFSYNC O_FSYNC
+# define FASYNC O_ASYNC
+# define FNONBLOCK O_NONBLOCK
+# define FNDELAY O_NDELAY
+#endif /* Use BSD. */
+
+/* Advise to `posix_fadvise'. */
+#ifdef __USE_XOPEN2K
+# define POSIX_FADV_NORMAL 0 /* No further special treatment. */
+# define POSIX_FADV_RANDOM 1 /* Expect random page references. */
+# define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
+# define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
+# define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
+# define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
+#endif
+
+#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
+/* Flags for SYNC_FILE_RANGE. */
+# define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages
+ in the range before performing the
+ write. */
+# define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those
+ dirty pages in the range which are
+ not presently under writeback. */
+# define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in
+ the range after performing the
+ write. */
+
+/* Flags for SPLICE and VMSPLICE. */
+# define SPLICE_F_MOVE 1 /* Move pages instead of copying. */
+# define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing
+ (but we may still block on the fd
+ we splice from/to). */
+# define SPLICE_F_MORE 4 /* Expect more data. */
+# define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */
+#endif
+
+__BEGIN_DECLS
+
+#if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
+
+/* Provide kernel hint to read ahead. */
+extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
+ __THROW;
+
+/* Selective file content synch'ing. */
+extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
+ unsigned int __flags);
+
+/* Splice address range into a pipe. */
+extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
+ size_t __count, unsigned int __flags);
+
+/* Splice two files together. */
+extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
+ __off64_t *__offout, size_t __len,
+ unsigned int __flags);
+
+/* In-kernel implementation of tee for pipe buffers. */
+extern ssize_t tee (int __fdin, int __fdout, size_t __len,
+ unsigned int __flags);
+
+#endif
+__END_DECLS
diff --git a/libc/sysdeps/linux/tile/bits/kernel_types.h b/libc/sysdeps/linux/tile/bits/kernel_types.h
new file mode 100644
index 000000000..a17c03445
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/kernel_types.h
@@ -0,0 +1,45 @@
+/*
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
+ * in this tarball.
+ */
+
+#ifndef __ASM_GENERIC_POSIX_TYPES_H
+#define __ASM_GENERIC_POSIX_TYPES_H
+
+typedef unsigned short __kernel_dev_t;
+typedef unsigned long __kernel_ino_t;
+typedef unsigned short __kernel_mode_t;
+typedef unsigned short __kernel_nlink_t;
+typedef long __kernel_off_t;
+typedef int __kernel_pid_t;
+typedef unsigned short __kernel_ipc_pid_t;
+typedef unsigned short __kernel_uid_t;
+typedef unsigned short __kernel_gid_t;
+typedef unsigned int __kernel_size_t;
+typedef int __kernel_ssize_t;
+typedef int __kernel_ptrdiff_t;
+typedef long __kernel_time_t;
+typedef long __kernel_suseconds_t;
+typedef long __kernel_clock_t;
+typedef int __kernel_daddr_t;
+typedef char * __kernel_caddr_t;
+typedef unsigned short __kernel_uid16_t;
+typedef unsigned short __kernel_gid16_t;
+typedef unsigned int __kernel_uid32_t;
+typedef unsigned int __kernel_gid32_t;
+typedef unsigned short __kernel_old_uid_t;
+typedef unsigned short __kernel_old_gid_t;
+typedef long long __kernel_loff_t;
+typedef __kernel_dev_t __kernel_old_dev_t;
+typedef long __kernel_long_t;
+typedef unsigned long __kernel_ulong_t;
+
+typedef struct {
+#ifdef __USE_ALL
+ int val[2];
+#else
+ int __val[2];
+#endif
+} __kernel_fsid_t;
+
+#endif
diff --git a/libc/sysdeps/linux/tile/bits/mman.h b/libc/sysdeps/linux/tile/bits/mman.h
new file mode 100644
index 000000000..9fe3b9849
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/mman.h
@@ -0,0 +1,38 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+/* The following definitions basically come from the kernel headers.
+ But the kernel header is not namespace clean. */
+
+#ifdef __USE_MISC
+/* These are Linux-specific. */
+# define MAP_NONBLOCK 0x00080 /* Do not block on IO. */
+# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */
+# define MAP_STACK MAP_GROWSDOWN /* Provide convenience alias. */
+# define MAP_LOCKED 0x00200 /* Lock the mapping. */
+# define MAP_NORESERVE 0x00400 /* Don't check for reservations. */
+# define MAP_DENYWRITE 0x00800 /* ETXTBSY */
+# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */
+# define MAP_POPULATE 0x00040 /* Populate (prefault) pagetables. */
+# define MAP_HUGETLB 0x04000 /* Create huge page mapping. */
+#endif
+
+/* Include generic Linux declarations. */
+#include <bits/mman-linux.h>
diff --git a/libc/sysdeps/linux/tile/bits/setjmp.h b/libc/sysdeps/linux/tile/bits/setjmp.h
new file mode 100644
index 000000000..47b46db46
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/setjmp.h
@@ -0,0 +1,34 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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 the machine-dependent type `jmp_buf'. TILE version. */
+#ifndef _BITS_SETJMP_H
+#define _BITS_SETJMP_H 1
+
+#if !defined _SETJMP_H && !defined _PTHREAD_H
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+#ifndef _ASM
+
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+typedef __uint_reg_t __jmp_buf[32];
+
+#endif
+
+#endif /* bits/setjmp.h */
diff --git a/libc/sysdeps/linux/tile/bits/shm.h b/libc/sysdeps/linux/tile/bits/shm.h
new file mode 100644
index 000000000..dbe4851f9
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/shm.h
@@ -0,0 +1,90 @@
+/*
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
+ * in this tarball.
+ */
+
+#ifndef _SYS_SHM_H
+# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
+#endif
+
+#include <bits/types.h>
+
+/* Permission flag for shmget. */
+#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
+#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
+
+/* Flags for `shmat'. */
+#define SHM_RDONLY 010000 /* attach read-only else read-write */
+#define SHM_RND 020000 /* round attach address to SHMLBA */
+#define SHM_REMAP 040000 /* take-over region on attach */
+
+/* Commands for `shmctl'. */
+#define SHM_LOCK 11 /* lock segment (root only) */
+#define SHM_UNLOCK 12 /* unlock segment (root only) */
+
+__BEGIN_DECLS
+
+/* Segment low boundary address multiple. */
+#define SHMLBA (__getpagesize () << 2)
+extern int __getpagesize (void) __THROW __attribute__ ((__const__));
+
+
+/* Type to count number of attaches. */
+typedef unsigned long int shmatt_t;
+
+/* Data structure describing a set of semaphores. */
+struct shmid_ds
+ {
+ struct ipc_perm shm_perm; /* operation permission struct */
+ size_t shm_segsz; /* size of segment in bytes */
+ __time_t shm_atime; /* time of last shmat() */
+ unsigned long int __unused1;
+ __time_t shm_dtime; /* time of last shmdt() */
+ unsigned long int __unused2;
+ __time_t shm_ctime; /* time of last change by shmctl() */
+ unsigned long int __unused3;
+ __pid_t shm_cpid; /* pid of creator */
+ __pid_t shm_lpid; /* pid of last shmop */
+ shmatt_t shm_nattch; /* number of current attaches */
+ unsigned long int __unused4;
+ unsigned long int __unused5;
+ };
+
+#ifdef __USE_MISC
+
+/* ipcs ctl commands */
+# define SHM_STAT 13
+# define SHM_INFO 14
+
+/* shm_mode upper byte flags */
+# define SHM_DEST 01000 /* segment will be destroyed on last detach */
+# define SHM_LOCKED 02000 /* segment will not be swapped */
+# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
+# define SHM_NORESERVE 010000 /* don't check for reservations */
+
+struct shminfo
+ {
+ unsigned long int shmmax;
+ unsigned long int shmmin;
+ unsigned long int shmmni;
+ unsigned long int shmseg;
+ unsigned long int shmall;
+ unsigned long int __unused1;
+ unsigned long int __unused2;
+ unsigned long int __unused3;
+ unsigned long int __unused4;
+ };
+
+struct shm_info
+ {
+ int used_ids;
+ unsigned long int shm_tot; /* total allocated shm */
+ unsigned long int shm_rss; /* total resident shm */
+ unsigned long int shm_swp; /* total swapped shm */
+ unsigned long int swap_attempts;
+ unsigned long int swap_successes;
+ };
+
+#endif /* __USE_MISC */
+
+__END_DECLS
diff --git a/libc/sysdeps/linux/tile/bits/sigcontextinfo.h b/libc/sysdeps/linux/tile/bits/sigcontextinfo.h
new file mode 100644
index 000000000..b5a857d4f
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/sigcontextinfo.h
@@ -0,0 +1,31 @@
+/*
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
+ * in this tarball.
+ */
+
+/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>, 1998.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define SIGCONTEXT int _code, struct sigcontext *
+#define SIGCONTEXT_EXTRA_ARGS _code,
+#define GET_PC(ctx) ((void *) (ctx)->sc_pc)
+#define GET_FRAME(ctx) ((void *) __builtin_frame_address (1))
+#define GET_STACK(ctx) ((void *) (ctx)->sc_usp)
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+ (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
diff --git a/libc/sysdeps/linux/tile/bits/stackinfo.h b/libc/sysdeps/linux/tile/bits/stackinfo.h
new file mode 100644
index 000000000..a9fd8173b
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/stackinfo.h
@@ -0,0 +1,11 @@
+/*
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
+ * in this tarball.
+ */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H 1
+
+#define _STACK_GROWS_DOWN 1
+
+#endif
diff --git a/libc/sysdeps/linux/tile/bits/syscalls.h b/libc/sysdeps/linux/tile/bits/syscalls.h
new file mode 100644
index 000000000..f4447a888
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/syscalls.h
@@ -0,0 +1,151 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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_SYSCALLS_H
+#define _BITS_SYSCALLS_H
+#ifndef _SYSCALL_H
+# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
+#endif
+
+/* Define a macro which expands inline into the wrapper code for a system
+ call. */
+# undef INLINE_SYSCALL
+# define INLINE_SYSCALL(name, nr, args...) \
+ ({ \
+ INTERNAL_SYSCALL_DECL (_sc_err); \
+ unsigned long _sc_val = INTERNAL_SYSCALL (name, _sc_err, nr, args); \
+ if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_sc_val, _sc_err), 0)) \
+ { \
+ __set_errno (INTERNAL_SYSCALL_ERRNO (_sc_val, _sc_err)); \
+ _sc_val = -1; \
+ } \
+ (long) _sc_val; \
+ })
+
+#undef INTERNAL_SYSCALL
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+ internal_syscall##nr (SYS_ify (name), err, args)
+
+#undef INTERNAL_SYSCALL_NCS
+#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
+ internal_syscall##nr (number, err, args)
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) int err
+
+#undef INTERNAL_SYSCALL_ERROR_P
+#define INTERNAL_SYSCALL_ERROR_P(val, err) ({ (void) (val); (err) != 0; })
+
+#undef INTERNAL_SYSCALL_ERRNO
+#define INTERNAL_SYSCALL_ERRNO(val, err) ({ (void) (val); (err); })
+
+#define internal_syscall0(num, err, dummy...) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#define internal_syscall1(num, err, arg0) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num), "R00" (arg0) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#define internal_syscall2(num, err, arg0, arg1) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num), "R00" (arg0), "R01" (arg1) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#define internal_syscall3(num, err, arg0, arg1, arg2) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num), "R00" (arg0), "R01" (arg1), "R02" (arg2) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#define internal_syscall4(num, err, arg0, arg1, arg2, arg3) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num), "R00" (arg0), "R01" (arg1), "R02" (arg2), \
+ "R03" (arg3) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#define internal_syscall5(num, err, arg0, arg1, arg2, arg3, arg4) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num), "R00" (arg0), "R01" (arg1), "R02" (arg2), \
+ "R03" (arg3), "R04" (arg4) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#define internal_syscall6(num, err, arg0, arg1, arg2, arg3, arg4, arg5) \
+ ({ \
+ long _sys_result, __SYSCALL_CLOBBER_DECLS; \
+ __asm__ __volatile__ ( \
+ "swint1" \
+ : "=R00" (_sys_result), "=R01" (err), __SYSCALL_CLOBBER_OUTPUTS \
+ : "R10" (num), "R00" (arg0), "R01" (arg1), "R02" (arg2), \
+ "R03" (arg3), "R04" (arg4), "R05" (arg5) \
+ : __SYSCALL_CLOBBERS); \
+ _sys_result; \
+ })
+
+#undef __SYSCALL_CLOBBERS
+#define __SYSCALL_CLOBBERS \
+ "r6", "r7", \
+ "r8", "r9", "r11", "r12", "r13", "r14", "r15", \
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \
+ "r24", "r25", "r26", "r27", "r28", "r29", "memory"
+
+/* gcc doesn't seem to allow an input operand to be clobbered, so we
+ fake it with dummy outputs. */
+#define __SYSCALL_CLOBBER_DECLS \
+ _clobber_r2, _clobber_r3, _clobber_r4, _clobber_r5, _clobber_r10
+
+#define __SYSCALL_CLOBBER_OUTPUTS \
+ "=R02" (_clobber_r2), "=R03" (_clobber_r3), "=R04" (_clobber_r4), \
+ "=R05" (_clobber_r5), "=R10" (_clobber_r10)
+
+#endif
diff --git a/libc/sysdeps/linux/tile/bits/uClibc_arch_features.h b/libc/sysdeps/linux/tile/bits/uClibc_arch_features.h
new file mode 100644
index 000000000..1472b18ab
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/uClibc_arch_features.h
@@ -0,0 +1,39 @@
+/*
+ * Track misc arch-specific features that aren't config options
+ */
+
+#ifndef _BITS_UCLIBC_ARCH_FEATURES_H
+#define _BITS_UCLIBC_ARCH_FEATURES_H
+
+#define __UCLIBC_ABORT_INSTRUCTION__ "ill"
+
+/* can your target use syscall6() for mmap ? */
+#undef __UCLIBC_MMAP_HAS_6_ARGS__
+
+#define __UCLIBC_SYSCALL_ALIGN_64BIT__
+
+/* does your target have a broken create_module() ? */
+#define __UCLIBC_BROKEN_CREATE_MODULE__
+
+/* does your target have to worry about older [gs]etrlimit() ? */
+#define __UCLIBC_HANDLE_OLDER_RLIMIT__
+
+/* does your target have an asm .set ? */
+#define __UCLIBC_HAVE_ASM_SET_DIRECTIVE__
+
+/* define if target doesn't like .global */
+#undef __UCLIBC_ASM_GLOBAL_DIRECTIVE__
+
+/* define if target supports .weak */
+#define __UCLIBC_HAVE_ASM_WEAK_DIRECTIVE__
+
+/* define if target supports .weakext */
+#undef __UCLIBC_HAVE_ASM_WEAKEXT_DIRECTIVE__
+
+/* define if target supports IEEE signed zero floats */
+#define __UCLIBC_HAVE_SIGNED_ZERO__
+
+/* define if target supports CFI pseudo ops */
+#define __UCLIBC_HAVE_ASM_CFI_DIRECTIVES__
+
+#endif /* _BITS_UCLIBC_ARCH_FEATURES_H */
diff --git a/libc/sysdeps/linux/tile/bits/wordsize.h b/libc/sysdeps/linux/tile/bits/wordsize.h
new file mode 100644
index 000000000..9dc4da5de
--- /dev/null
+++ b/libc/sysdeps/linux/tile/bits/wordsize.h
@@ -0,0 +1,11 @@
+/* Determine the wordsize from the preprocessor defines. */
+
+#ifdef __LP64__
+# define __WORDSIZE 64
+# define __WORDSIZE_TIME64_COMPAT32 1
+#else
+# define __WORDSIZE 32
+# define __WORDSIZE_TIME64_COMPAT32 0
+# define __WORDSIZE32_SIZE_ULONG 0
+# define __WORDSIZE32_PTRDIFF_LONG 0
+#endif
diff --git a/libc/sysdeps/linux/tile/clone.S b/libc/sysdeps/linux/tile/clone.S
new file mode 100644
index 000000000..17b9ab1cd
--- /dev/null
+++ b/libc/sysdeps/linux/tile/clone.S
@@ -0,0 +1,173 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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/>. */
+
+/* clone() is even more special than fork() as it mucks with stacks
+ and invokes a function in the right context after it's all over. */
+
+#include <sysdep.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+#include <asm/unistd.h>
+#include <arch/abi.h>
+#include <linux/sched.h>
+
+/* What we save where in the stack frame; must include all callee-saves. */
+#define FRAME_NEXT_LR (0 * REGSIZE) /* reserved by ABI; not used here */
+#define FRAME_SP (1 * REGSIZE)
+#define FRAME_R30 (2 * REGSIZE)
+#define FRAME_R31 (3 * REGSIZE)
+#define FRAME_R32 (4 * REGSIZE)
+#define FRAME_SIZE (5 * REGSIZE)
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
+ pid_t *ptid, struct user_desc *tls, pid_t *ctid); */
+
+ .text
+ENTRY (__clone)
+ /* Create a stack frame so we can pass callee-saves to new task. */
+ {
+ move r10, sp
+ st sp, lr
+ ADDI_PTR sp, sp, -FRAME_SIZE
+ }
+ cfi_offset (lr, 0)
+ cfi_def_cfa_offset (FRAME_SIZE)
+ ADDI_PTR r11, sp, FRAME_SP
+ {
+ st r11, r10
+ ADDI_PTR r11, sp, FRAME_R30
+ }
+ {
+ st r11, r30
+ ADDI_PTR r11, sp, FRAME_R31
+ }
+ cfi_offset (r30, FRAME_R30 - FRAME_SIZE)
+ {
+ st r11, r31
+ ADDI_PTR r11, sp, FRAME_R32
+ }
+ cfi_offset (r31, FRAME_R31 - FRAME_SIZE)
+ st r11, r32
+ cfi_offset (r32, FRAME_R32 - FRAME_SIZE)
+
+ /* sanity check arguments */
+ beqz r0, .Linvalid
+ beqz r1, .Linvalid
+
+ /* Make sure child stack is properly aligned, and set up the
+ top frame so that we can call out of it immediately in the
+ child. Setting it up here means we fault in the parent if
+ it's bogus, which is probably cleaner than faulting first
+ thing in the child. */
+ ADDI_PTR r1, r1, -C_ABI_SAVE_AREA_SIZE
+ andi r1, r1, -C_ABI_SAVE_AREA_SIZE
+ ADDI_PTR r9, r1, REGSIZE /* sp of this frame on entry, i.e. zero */
+ st r9, zero
+
+ /* We need to switch the argument convention around from
+ libc to kernel:
+
+ libc:
+ r0 fn
+ r1 child_stack
+ r2 flags
+ r3 arg
+ r4 ptid
+ r5 tls
+ r6 ctid
+
+ kernel:
+ r0 flags
+ r1 child_stack [same as libc]
+ r2 ptid
+ r3 ctid
+ r4 tls
+
+ Plus the callee-saves as described at .Lthread_start, below. */
+ {
+ move r32, r0
+ move r0, r2
+ }
+ {
+ move r31, r3
+ move r3, r6
+ }
+ {
+ move r30, r2
+ move r2, r4
+ }
+ {
+ move r4, r5
+ moveli TREG_SYSCALL_NR_NAME, __NR_clone
+ }
+ swint1
+ beqz r0, .Lthread_start /* If in child task. */
+
+.Ldone:
+ /* Restore the callee-saved registers and return. */
+ ADDLI_PTR lr, sp, FRAME_SIZE
+ {
+ ld lr, lr
+ ADDLI_PTR r30, sp, FRAME_R30
+ }
+ {
+ ld r30, r30
+ ADDLI_PTR r31, sp, FRAME_R31
+ }
+ {
+ ld r31, r31
+ ADDLI_PTR r32, sp, FRAME_R32
+ }
+ {
+ ld r32, r32
+ ADDI_PTR sp, sp, FRAME_SIZE
+ }
+ cfi_def_cfa_offset (0)
+
+ bnez r1, .Lerror
+ jrp lr
+
+.Lerror:
+ j SYSCALL_ERROR_NAME
+
+.Linvalid:
+ {
+ movei r1, EINVAL
+ j .Ldone
+ }
+
+/* This function expects to receive:
+
+ sp: the top of a valid stack area
+ r30: clone() flags
+ r31: the argument to pass to the user function
+ r32: the user function pointer */
+
+.Lthread_start:
+ cfi_def_cfa_offset (FRAME_SIZE)
+ cfi_undefined (lr)
+ {
+ /* Invoke user function with specified argument. */
+ move r0, r31
+ jalr r32
+ }
+ moveli TREG_SYSCALL_NR_NAME, __NR_exit
+ swint1
+PSEUDO_END (__clone)
+
+libc_hidden_def (clone)
+weak_alias (__clone, clone)
diff --git a/libc/sysdeps/linux/tile/crt1.S b/libc/sysdeps/linux/tile/crt1.S
new file mode 100644
index 000000000..4a7c1d76d
--- /dev/null
+++ b/libc/sysdeps/linux/tile/crt1.S
@@ -0,0 +1,182 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ 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/>. */
+
+/* This is the canonical entry point, usually the first thing in the text
+ segment. The ELF standard tells us that the stack is set up like this on
+ entry (the left side is the offset from "sp"), in units of
+ __SIZEOF_POINTER__ entries:
+
+ +0 argc
+ +1 argv[0]
+ ...
+ +(argc+1) NULL
+ +(argc+2) envp[0]
+ ...
+ NULL
+ ... ElfInfo
+
+ The ElfInfo is pairs of key/value long words following the envp
+ pointers and terminated by a zero-valued key.
+
+ Although not mandated by the standard, it happens to be the case
+ that we store the actual argv and envp strings immediately after
+ the ElfInfo data on the stack.
+
+ On entry r0 points to the shared library termination function, or 0
+ if there isn't one.
+*/
+
+#include <features.h>
+#include <sysdep.h>
+#include <arch/abi.h>
+
+/* Just create no-ops if we don't support PC-relative PLT relocations. */
+#ifdef NO_PLT_PCREL
+# define hw2_last_plt(x) 0
+# define hw1_plt(x) 0
+# define hw0_plt(x) 0
+#endif
+
+ .text
+ .global _start
+ .type _start,@function
+ .align 8
+_start:
+ /* Linux starts us with sp pointing at the conventional Elf layout,
+ but we need to allow two "caller" words for our ABI convention. */
+ {
+ /* Load argc (stored as a "long", equivalent to a pointer type). */
+ LD_PTR r1, sp
+
+ /* Save incoming 'sp', which points to the Elf argument block. */
+ move r52, sp
+ }
+
+ {
+ /* Allocate stack frame callee space for __libc_start_main. */
+ ADDI_PTR r12, sp, -(2 * REGSIZE)
+ }
+
+ {
+ /* Get our PC. */
+ lnk r13
+
+ /* sp is not necessarily properly aligned on startup because
+ of the way ld.so pops off leading argv elements. So align it. */
+ andi sp, r12, -8
+ }
+.Lmy_pc:
+
+ {
+ /* Pass the address of the shared library termination function. */
+ move r5, r0
+
+ /* Compute location where __libc_start_main's caller is supposed to
+ store its frame pointer. */
+ ADDI_PTR r12, sp, REGSIZE
+
+ /* Zero out callee space for return address. Unnecessary but free.
+ This is just paranoia to help backtracing not go awry. */
+ st sp, zero
+ }
+ {
+ /* Zero out our frame pointer for __libc_start_main. */
+ st r12, zero
+
+ /* Zero out lr to make __libc_start_main the end of backtrace. */
+ move lr, zero
+
+ /* Compute a pointer to argv. envp will be determined
+ later in __libc_start_main. We set up the first argument
+ (the address of main) below. */
+ ADDI_PTR r2, r52, __SIZEOF_POINTER__
+ }
+ {
+ /* Pass the highest stack address to user code. */
+ ADDI_PTR r6, sp, (2 * REGSIZE)
+
+ /* Pass address of main() in r0, and of our own entry
+ points to .fini and .init in r3 and r4. */
+ moveli r0, hw2_last(main - .Lmy_pc)
+ }
+ {
+ shl16insli r0, r0, hw1(main - .Lmy_pc)
+ moveli r3, hw2_last(_init - .Lmy_pc)
+ }
+ {
+ shl16insli r0, r0, hw0(main - .Lmy_pc)
+ shl16insli r3, r3, hw1(_init - .Lmy_pc)
+ }
+ {
+ ADD_PTR r0, r0, r13
+ shl16insli r3, r3, hw0(_init - .Lmy_pc)
+ }
+ {
+ moveli r12, hw2_last_plt(__uClibc_main - .Lmy_pc)
+ ADD_PTR r3, r3, r13
+ }
+ {
+ shl16insli r12, r12, hw1_plt(__uClibc_main - .Lmy_pc)
+ moveli r4, hw2_last(_fini - .Lmy_pc)
+ }
+ {
+ shl16insli r12, r12, hw0_plt(__uClibc_main - .Lmy_pc)
+ shl16insli r4, r4, hw1(_fini - .Lmy_pc)
+ }
+ {
+ ADD_PTR r12, r12, r13
+ shl16insli r4, r4, hw0(_fini - .Lmy_pc)
+ }
+ {
+ ADD_PTR r4, r4, r13
+#ifdef NO_PLT_PCREL
+ j plt(__uClibc_main)
+#else
+ jr r12
+#endif
+ }
+
+ {
+ /* Tell backtracer to give up (_start has no caller). */
+ info INFO_OP_CANNOT_BACKTRACE
+ }
+.size _start, .-_start
+
+/* Define a symbol for the first piece of initialized data. */
+ .data
+ .global __data_start
+ .align 8
+__data_start:
+ .long 0
+ .weak data_start
+ data_start = __data_start
diff --git a/libc/sysdeps/linux/tile/crti.S b/libc/sysdeps/linux/tile/crti.S
new file mode 100644
index 000000000..e355cca29
--- /dev/null
+++ b/libc/sysdeps/linux/tile/crti.S
@@ -0,0 +1,68 @@
+/* Special .init and .fini section support for tile.
+ Copyright (C) 2012-2018 Free Software Foundation, Inc.
+
+ 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ 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/>. */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+ .fini sections and defines global symbols for those addresses, so
+ they can be called as functions. The symbols _init and _fini are
+ magic and cause the linker to emit DT_INIT and DT_FINI. */
+
+#include <sysdep.h>
+
+
+ .section .init,"ax",@progbits
+ .align 8
+ .globl _init
+ .type _init, @function
+_init:
+ {
+ move r29, sp
+ ADDI_PTR r28, sp, -REGSIZE
+ st sp, lr
+ }
+ ADDI_PTR sp, sp, -(2 * REGSIZE)
+ st r28, r29
+.Lno_weak_fn:
+
+ .section .fini,"ax",@progbits
+ .align 8
+ .globl _fini
+ .type _fini, @function
+_fini:
+ {
+ move r29, sp
+ ADDI_PTR r28, sp, -REGSIZE
+ st sp, lr
+ }
+ ADDI_PTR sp, sp, -(2 * REGSIZE)
+ st r28, r29
diff --git a/libc/sysdeps/linux/tile/crtn.S b/libc/sysdeps/linux/tile/crtn.S
new file mode 100644
index 000000000..a5e743977
--- /dev/null
+++ b/libc/sysdeps/linux/tile/crtn.S
@@ -0,0 +1,54 @@
+/* Special .init and .fini section support for tile.
+ Copyright (C) 2012-2018 Free Software Foundation, Inc.
+
+ 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ 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/>. */
+
+/* crtn.S puts function epilogues in the .init and .fini sections
+ corresponding to the prologues in crti.S. */
+
+#include <sysdep.h>
+
+ .section .init,"ax",@progbits
+ ADDI_PTR r29, sp, (2 * REGSIZE)
+ {
+ ADDI_PTR sp, sp, (2 * REGSIZE)
+ ld lr, r29
+ }
+ jrp lr
+
+ .section .fini,"ax",@progbits
+ ADDI_PTR r29, sp, (2 * REGSIZE)
+ {
+ ADDI_PTR sp, sp, (2 * REGSIZE)
+ ld lr, r29
+ }
+ jrp lr
diff --git a/libc/sysdeps/linux/tile/jmpbuf-offsets.h b/libc/sysdeps/linux/tile/jmpbuf-offsets.h
new file mode 100644
index 000000000..f0bf47058
--- /dev/null
+++ b/libc/sysdeps/linux/tile/jmpbuf-offsets.h
@@ -0,0 +1,60 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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/>. */
+
+/* We don't use most of these symbols; they are here for documentation. */
+#define JB_R30 0
+#define JB_R31 1
+#define JB_R32 2
+#define JB_R33 3
+#define JB_R34 4
+#define JB_R35 5
+#define JB_R36 6
+#define JB_R37 7
+#define JB_R38 8
+#define JB_R39 9
+#define JB_R40 10
+#define JB_R41 11
+#define JB_R42 12
+#define JB_R43 13
+#define JB_R44 14
+#define JB_R45 15
+#define JB_R46 16
+#define JB_R47 17
+#define JB_R48 18
+#define JB_R49 19
+#define JB_R50 20
+#define JB_R51 21
+#define JB_FP 22 /* r52 */
+#define JB_TP 23 /* r53 */
+#define JB_SP 24 /* r54 */
+#define JB_PC 25 /* normally LR, r55 */
+#define JB_ICS 26 /* interrupt critical section bit */
+
+/* We save space for some extra state to accommodate future changes. */
+#define JB_LEN 32 /* number of words */
+
+#define JB_SIZE (JB_LEN * REGSIZE)
+
+/* Helper macro used by all the setjmp/longjmp assembly code. */
+#define FOR_EACH_CALLEE_SAVED_REG(f) \
+ .no_require_canonical_reg_names; f(r30); f(r31); \
+ f(r32); f(r33); f(r34); f(r35); f(r36); f(r37); f(r38); f(r39); \
+ f(r40); f(r41); f(r42); f(r43); f(r44); f(r45); f(r46); f(r47); \
+ f(r48); f(r49); f(r50); f(r51); f(r52); f(r53); f(r54); f(r55)
+
+/* Helper for generic ____longjmp_chk(). */
+#define JB_FRAME_ADDRESS(buf) \
+ ((void *) (unsigned long) (buf[JB_SP]))
diff --git a/libc/sysdeps/linux/tile/jmpbuf-unwind.h b/libc/sysdeps/linux/tile/jmpbuf-unwind.h
new file mode 100644
index 000000000..2503c31ec
--- /dev/null
+++ b/libc/sysdeps/linux/tile/jmpbuf-unwind.h
@@ -0,0 +1,42 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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 <setjmp.h>
+#include <jmpbuf-offsets.h>
+#include <stdint.h>
+#include <unwind.h>
+#include <sysdep.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
+ ((void *) (address) < (void *) demangle ((jmpbuf)[JB_SP]))
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) (long) _Unwind_GetCFA (_context), _adj)
+
+static inline uintptr_t __attribute__ ((unused))
+_jmpbuf_sp (__jmp_buf regs)
+{
+ uintptr_t sp = regs[JB_SP];
+ return sp;
+}
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))
+
+/* We use the normal longjmp for unwinding. */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/libc/sysdeps/linux/tile/setjmp.S b/libc/sysdeps/linux/tile/setjmp.S
new file mode 100644
index 000000000..86bdacbdb
--- /dev/null
+++ b/libc/sysdeps/linux/tile/setjmp.S
@@ -0,0 +1,44 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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 <jmpbuf-offsets.h>
+
+ .text
+
+ /* Keep traditional entry points in with sigsetjmp(). */
+ENTRY(setjmp)
+ { movei r1, 1; j 1f }
+END(setjmp)
+
+ENTRY(_setjmp)
+ { movei r1, 0; j 1f }
+END(_setjmp)
+libc_hidden_def (_setjmp)
+
+ENTRY(__sigsetjmp)
+1:
+ move r2, r0
+
+#define SAVE(r) { st r2, r ; ADDI_PTR r2, r2, REGSIZE }
+ FOR_EACH_CALLEE_SAVED_REG(SAVE)
+
+ mfspr r3, INTERRUPT_CRITICAL_SECTION
+ st r2, r3
+ j plt(__sigjmp_save)
+ jrp lr /* Keep the backtracer happy. */
+END(__sigsetjmp)
+hidden_def (__sigsetjmp)
diff --git a/libc/sysdeps/linux/tile/sys/cachectl.h b/libc/sysdeps/linux/tile/sys/cachectl.h
new file mode 100644
index 000000000..14ce52f47
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/cachectl.h
@@ -0,0 +1,34 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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/libc/sysdeps/linux/tile/sys/procfs.h b/libc/sysdeps/linux/tile/sys/procfs.h
new file mode 100644
index 000000000..8af94bab7
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/procfs.h
@@ -0,0 +1,126 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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
+#define _SYS_PROCFS_H 1
+
+/* This is somewhat modelled after the file of the same name on SVR4
+ systems. It provides a definition of the core file format for ELF
+ used on Linux. It doesn't have anything to do with the /proc file
+ system, even though Linux has one.
+
+ Anyway, the whole purpose of this file is for GDB and GDB only.
+ Don't read too much into it. Don't use it for anything other than
+ GDB unless you know what you are doing. */
+
+#include <features.h>
+#include <sys/time.h>
+#include <sys/types.h>
+
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+__BEGIN_DECLS
+
+/* Type for a general-purpose register. */
+typedef __uint_reg_t elf_greg_t;
+
+/* And the whole bunch of them. We could have used `struct pt_regs'
+ from <asm/ptrace.h> 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 64
+#define ELF_NFPREG 0
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+typedef elf_greg_t elf_fpregset_t[ELF_NFPREG];
+
+/* Signal info. */
+struct elf_siginfo
+ {
+ int si_signo; /* Signal number. */
+ int si_code; /* Extra code. */
+ int si_errno; /* Errno. */
+ };
+
+
+/* Definitions to generate Intel SVR4-like core files. These mostly
+ have the same names as the SVR4 types with "elf_" tacked on the
+ front to prevent clashes with Linux definitions, and the typedef
+ forms have been avoided. This is mostly like the SVR4 structure,
+ but more Linuxy, with things that Linux does not support and which
+ GDB doesn't really use excluded. */
+
+struct elf_prstatus
+ {
+ struct elf_siginfo pr_info; /* Info associated with signal. */
+ short int pr_cursig; /* Current signal. */
+ unsigned long int pr_sigpend; /* Set of pending signals. */
+ unsigned long int pr_sighold; /* Set of held signals. */
+ __pid_t pr_pid;
+ __pid_t pr_ppid;
+ __pid_t pr_pgrp;
+ __pid_t pr_sid;
+ struct timeval pr_utime; /* User time. */
+ struct timeval pr_stime; /* System time. */
+ struct timeval pr_cutime; /* Cumulative user time. */
+ struct timeval pr_cstime; /* Cumulative system time. */
+ elf_gregset_t pr_reg; /* GP registers. */
+ int pr_fpvalid; /* True if math copro being used. */
+ };
+
+
+#define ELF_PRARGSZ (80) /* Number of chars for args. */
+
+struct elf_prpsinfo
+ {
+ char pr_state; /* Numeric process state. */
+ char pr_sname; /* Char for pr_state. */
+ char pr_zomb; /* Zombie. */
+ char pr_nice; /* Nice val. */
+ unsigned long int pr_flag; /* Flags. */
+ unsigned int pr_uid;
+ unsigned int pr_gid;
+ int pr_pid, pr_ppid, pr_pgrp, pr_sid;
+ /* Lots missing */
+ char pr_fname[16]; /* Filename of executable. */
+ char pr_psargs[ELF_PRARGSZ]; /* Initial part of arg list. */
+ };
+
+
+/* The rest of this file provides the types for emulation of the
+ Solaris <proc_service.h> interfaces that should be implemented by
+ users of libthread_db. */
+
+/* Addresses. */
+typedef void *psaddr_t;
+
+/* Register sets. Linux has different names. */
+typedef elf_gregset_t prgregset_t;
+
+/* Provide dummy declaration here; we don't have FP registers. */
+typedef elf_fpregset_t prfpregset_t;
+
+/* We don't have any differences between processes and threads,
+ therefore have only one PID type. */
+typedef __pid_t lwpid_t;
+
+/* Process status and info. In the end we do provide typedefs for them. */
+typedef struct elf_prstatus prstatus_t;
+typedef struct elf_prpsinfo prpsinfo_t;
+
+__END_DECLS
+
+#endif /* sys/procfs.h */
diff --git a/libc/sysdeps/linux/tile/sys/ptrace.h b/libc/sysdeps/linux/tile/sys/ptrace.h
new file mode 100644
index 000000000..94fe60f6f
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/ptrace.h
@@ -0,0 +1,198 @@
+/* `ptrace' debugger support interface. Linux/Tile version.
+ Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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_PTRACE_H
+#define _SYS_PTRACE_H 1
+
+#include <features.h>
+#include <bits/types.h>
+
+__BEGIN_DECLS
+
+/* Type of the REQUEST argument to `ptrace.' */
+enum __ptrace_request
+{
+ /* Indicate that the process making this request should be traced.
+ All signals received by this process can be intercepted by its
+ parent, and its parent can use the other `ptrace' requests. */
+ PTRACE_TRACEME = 0,
+#define PT_TRACE_ME PTRACE_TRACEME
+
+ /* Return the word in the process's text space at address ADDR. */
+ PTRACE_PEEKTEXT = 1,
+#define PT_READ_I PTRACE_PEEKTEXT
+
+ /* Return the word in the process's data space at address ADDR. */
+ PTRACE_PEEKDATA = 2,
+#define PT_READ_D PTRACE_PEEKDATA
+
+ /* Return the word in the process's user area at offset ADDR. */
+ PTRACE_PEEKUSER = 3,
+#define PT_READ_U PTRACE_PEEKUSER
+
+ /* Write the word DATA into the process's text space at address ADDR. */
+ PTRACE_POKETEXT = 4,
+#define PT_WRITE_I PTRACE_POKETEXT
+
+ /* Write the word DATA into the process's data space at address ADDR. */
+ PTRACE_POKEDATA = 5,
+#define PT_WRITE_D PTRACE_POKEDATA
+
+ /* Write the word DATA into the process's user area at offset ADDR. */
+ PTRACE_POKEUSER = 6,
+#define PT_WRITE_U PTRACE_POKEUSER
+
+ /* Continue the process. */
+ PTRACE_CONT = 7,
+#define PT_CONTINUE PTRACE_CONT
+
+ /* Kill the process. */
+ PTRACE_KILL = 8,
+#define PT_KILL PTRACE_KILL
+
+ /* Single step the process. */
+ PTRACE_SINGLESTEP = 9,
+#define PT_STEP PTRACE_SINGLESTEP
+
+ /* Get all general purpose registers used by a processes. */
+ PTRACE_GETREGS = 12,
+#define PT_GETREGS PTRACE_GETREGS
+
+ /* Set all general purpose registers used by a processes. */
+ PTRACE_SETREGS = 13,
+#define PT_SETREGS PTRACE_SETREGS
+
+ /* Attach to a process that is already running. */
+ PTRACE_ATTACH = 16,
+#define PT_ATTACH PTRACE_ATTACH
+
+ /* Detach from a process attached to with PTRACE_ATTACH. */
+ PTRACE_DETACH = 17,
+#define PT_DETACH PTRACE_DETACH
+
+ /* Continue and stop at the next entry to or return from syscall. */
+ PTRACE_SYSCALL = 24,
+#define PT_SYSCALL PTRACE_SYSCALL
+
+ /* Set ptrace filter options. */
+ PTRACE_SETOPTIONS = 0x4200,
+#define PT_SETOPTIONS PTRACE_SETOPTIONS
+
+ /* Get last ptrace message. */
+ PTRACE_GETEVENTMSG = 0x4201,
+#define PT_GETEVENTMSG PTRACE_GETEVENTMSG
+
+ /* Get siginfo for process. */
+ PTRACE_GETSIGINFO = 0x4202,
+#define PT_GETSIGINFO PTRACE_GETSIGINFO
+
+ /* Set new siginfo for process. */
+ PTRACE_SETSIGINFO = 0x4203,
+#define PT_SETSIGINFO PTRACE_SETSIGINFO
+
+ /* Set register content. */
+ PTRACE_SETREGSET = 0x4205,
+#define PTRACE_SETREGSET PTRACE_SETREGSET
+
+ /* Like PTRACE_ATTACH, but do not force tracee to trap and do not affect
+ signal or group stop state. */
+ PTRACE_SEIZE = 0x4206,
+#define PTRACE_SEIZE PTRACE_SEIZE
+
+ /* Trap seized tracee. */
+ PTRACE_INTERRUPT = 0x4207,
+#define PTRACE_INTERRUPT PTRACE_INTERRUPT
+
+ /* Wait for next group event. */
+ PTRACE_LISTEN = 0x4208,
+#define PTRACE_LISTEN PTRACE_LISTEN
+
+ /* Retrieve siginfo_t structures without removing signals from a queue. */
+ PTRACE_PEEKSIGINFO = 0x4209,
+#define PTRACE_PEEKSIGINFO PTRACE_PEEKSIGINFO
+
+ /* Get the mask of blocked signals. */
+ PTRACE_GETSIGMASK = 0x420a,
+#define PTRACE_GETSIGMASK PTRACE_GETSIGMASK
+
+ /* Change the mask of blocked signals. */
+ PTRACE_SETSIGMASK = 0x420b,
+#define PTRACE_SETSIGMASK PTRACE_SETSIGMASK
+
+ /* Get seccomp BPF filters. */
+ PTRACE_SECCOMP_GET_FILTER = 0x420c
+#define PTRACE_SECCOMP_GET_FILTER PTRACE_SECCOMP_GET_FILTER
+};
+
+/* Options set using PTRACE_SETOPTIONS. */
+enum __ptrace_setoptions
+{
+ PTRACE_O_TRACESYSGOOD = 0x00000001,
+ PTRACE_O_TRACEFORK = 0x00000002,
+ PTRACE_O_TRACEVFORK = 0x00000004,
+ PTRACE_O_TRACECLONE = 0x00000008,
+ PTRACE_O_TRACEEXEC = 0x00000010,
+ PTRACE_O_TRACEVFORKDONE = 0x00000020,
+ PTRACE_O_TRACEEXIT = 0x00000040,
+ PTRACE_O_TRACESECCOMP = 0x00000080,
+ PTRACE_O_EXITKILL = 0x00100000,
+ PTRACE_O_SUSPEND_SECCOMP = 0x00200000,
+ PTRACE_O_MASK = 0x003000ff
+};
+
+enum __ptrace_eventcodes
+{
+/* Wait extended result codes for the above trace options. */
+ PTRACE_EVENT_FORK = 1,
+ PTRACE_EVENT_VFORK = 2,
+ PTRACE_EVENT_CLONE = 3,
+ PTRACE_EVENT_EXEC = 4,
+ PTRACE_EVENT_VFORK_DONE = 5,
+ PTRACE_EVENT_EXIT = 6,
+ PTRACE_EVENT_SECCOMP = 7,
+/* Extended result codes enabled by means other than options. */
+ PTRACE_EVENT_STOP = 128
+};
+
+/* Arguments for PTRACE_PEEKSIGINFO. */
+struct __ptrace_peeksiginfo_args
+{
+ __uint64_t off; /* From which siginfo to start. */
+ __uint32_t flags; /* Flags for peeksiginfo. */
+ __int32_t nr; /* How many siginfos to take. */
+};
+
+enum __ptrace_peeksiginfo_flags
+{
+ /* Read signals from a shared (process wide) queue. */
+ PTRACE_PEEKSIGINFO_SHARED = (1 << 0)
+};
+
+/* Perform process tracing functions. REQUEST is one of the values
+ above, and determines the action to be taken.
+ For all requests except PTRACE_TRACEME, PID specifies the process to be
+ traced.
+
+ PID and the other arguments described above for the various requests should
+ appear (those that are used for the particular request) as:
+ pid_t PID, void *ADDR, int DATA, void *ADDR2
+ after REQUEST. */
+extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
+
+__END_DECLS
+
+#endif /* _SYS_PTRACE_H */
diff --git a/libc/sysdeps/linux/tile/sys/reg.h b/libc/sysdeps/linux/tile/sys/reg.h
new file mode 100644
index 000000000..1ab17ce82
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/reg.h
@@ -0,0 +1,2 @@
+/* The traditional purpose of "sys/reg.h" is satisfied by "arch/abi.h". */
+#include <arch/abi.h>
diff --git a/libc/sysdeps/linux/tile/sys/ucontext.h b/libc/sysdeps/linux/tile/sys/ucontext.h
new file mode 100644
index 000000000..ed2c27b58
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/ucontext.h
@@ -0,0 +1,96 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+#include <signal.h>
+#include <bits/sigcontext.h>
+
+#ifdef __USE_MISC
+# define __ctx(fld) fld
+#else
+# define __ctx(fld) __ ## fld
+#endif
+
+#ifdef __USE_MISC
+/* Get register type and register names. */
+# include <arch/abi.h>
+
+
+/* Type for general register. */
+typedef uint_reg_t greg_t;
+
+/* Number of general registers. Must agree with <asm/ptrace.h>. */
+# define NGREG 64
+
+/* Container for all general registers. */
+typedef greg_t gregset_t[NGREG];
+#endif
+
+#ifdef __USE_GNU
+/* Names for interesting registers in the `gregset_t' array. */
+enum
+{
+ /* ... r0 through r51 are just 0 through 51 ... */
+ REG_FP = TREG_FP,
+# define REG_FP REG_FP
+ REG_TP = TREG_TP,
+# define REG_TP REG_TP
+ REG_SP = TREG_SP,
+# define REG_SP REG_SP
+ REG_LR = TREG_LR,
+# define REG_LR REG_LR
+};
+#endif
+
+#define __need_int_reg_t
+#include <arch/abi.h>
+
+/* A machine context is exactly a sigcontext. */
+typedef struct
+ {
+ __extension__ union
+ {
+ __uint_reg_t __ctx(gregs)[56];
+ __extension__ struct
+ {
+ __uint_reg_t __ctx(__gregs)[53];
+ __uint_reg_t __ctx(tp);
+ __uint_reg_t __ctx(sp);
+ __uint_reg_t __ctx(lr);
+ };
+ };
+ __uint_reg_t __ctx(pc);
+ __uint_reg_t __ctx(ics);
+ __uint_reg_t __ctx(faultnum);
+ __uint_reg_t __glibc_reserved1[5];
+ } mcontext_t;
+
+/* Userlevel context. */
+typedef struct ucontext_t
+ {
+ unsigned long int __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/libc/sysdeps/linux/tile/sys/user.h b/libc/sysdeps/linux/tile/sys/user.h
new file mode 100644
index 000000000..c871f1a03
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sys/user.h
@@ -0,0 +1 @@
+/* This file is not needed, but in practice gdb might try to include it. */
diff --git a/libc/sysdeps/linux/tile/sysdep.h b/libc/sysdeps/linux/tile/sysdep.h
new file mode 100644
index 000000000..b9231d7ef
--- /dev/null
+++ b/libc/sysdeps/linux/tile/sysdep.h
@@ -0,0 +1,118 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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 <common/sysdep.h>
+#include <bits/wordsize.h>
+#include <arch/abi.h>
+
+#undef SYS_ify
+#define SYS_ify(syscall_name) __NR_##syscall_name
+
+#if defined __ASSEMBLER__
+
+/* Make use of .size directive. */
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name;
+
+/* Define an entry point visible from C. */
+#define ENTRY(name) \
+ .globl C_SYMBOL_NAME(name); \
+ .type C_SYMBOL_NAME(name),@function; \
+ .align 8; \
+ C_LABEL(name) \
+ cfi_startproc; \
+
+#undef END
+#define END(name) \
+ cfi_endproc; \
+ ASM_SIZE_DIRECTIVE(name)
+
+/* Since C identifiers are not normally prefixed with an underscore
+ on this system, the asm identifier `syscall_error' intrudes on the
+ C name space. Make sure we use an innocuous name. */
+#define syscall_error __syscall_error
+
+/* Local label name for asm code. */
+#define L(name) .L##name
+
+/* Specify the size in bytes of a machine register. */
+#define REGSIZE 8
+
+/* Provide "pointer-oriented" instruction variants. These differ not
+ just for tilepro vs tilegx, but also for tilegx -m64 vs -m32. */
+#if __WORDSIZE == 32
+#define ADD_PTR addx
+#define ADDI_PTR addxi
+#define ADDLI_PTR addxli
+#define LD_PTR ld4s
+#define ST_PTR st4
+#define SHL_PTR_ADD shl2add
+#else
+#define ADD_PTR add
+#define ADDI_PTR addi
+#define ADDLI_PTR addli
+#define LD_PTR LD
+#define ST_PTR ST
+#define SHL_PTR_ADD shl3add
+#endif
+
+/* The actual implementation of doing a syscall. */
+#define DO_CALL(syscall_name, args) \
+ moveli TREG_SYSCALL_NR_NAME, SYS_ify(syscall_name); \
+ swint1
+
+/* TILE Linux returns the result in r0 (or a negative errno).
+ The kernel "owns" the code to decide if a given value is an error,
+ and puts errno in r1 if so, or otherwise zero. */
+#define PSEUDO(name, syscall_name, args) \
+ ENTRY (name); \
+ DO_CALL(syscall_name, args); \
+ BNEZ r1, 0f
+
+#define ret jrp lr
+
+#ifndef SHARED
+/* For static code, on error jump to __syscall_error directly. */
+# define SYSCALL_ERROR_NAME __syscall_error
+#elif IS_IN_libc || IS_IN_libpthread
+/* Use the internal name for libc/libpthread shared objects. */
+# define SYSCALL_ERROR_NAME __GI___syscall_error
+#else
+/* Otherwise, on error do a full PLT jump. */
+# define SYSCALL_ERROR_NAME plt(__syscall_error)
+#endif
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) \
+0: \
+ j SYSCALL_ERROR_NAME; \
+ END (name)
+
+#undef PSEUDO_NOERRNO
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+ ENTRY (name); \
+ DO_CALL(syscall_name, args)
+
+#define ret_NOERRNO jrp lr
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(name) \
+ END (name)
+
+/* Convenience wrappers. */
+#define SYSCALL__(name, args) PSEUDO (__##name, name, args)
+#define SYSCALL(name, args) PSEUDO (name, name, args)
+
+#endif /* __ASSEMBLER__ */
diff --git a/libc/sysdeps/linux/tile/vfork.S b/libc/sysdeps/linux/tile/vfork.S
new file mode 100644
index 000000000..ab104a0c1
--- /dev/null
+++ b/libc/sysdeps/linux/tile/vfork.S
@@ -0,0 +1,45 @@
+/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
+
+ 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 __ASSEMBLY__ /* for kernel headers */
+#include <linux/sched.h>
+#include <asm/signal.h>
+
+/* Clone the calling process, but without copying the whole address space.
+ The calling process is suspended until the new process exits or is
+ replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
+ and the process ID of the new process to the old process. */
+
+ .text
+ENTRY (__vfork)
+ {
+ moveli r0, CLONE_VFORK | CLONE_VM | SIGCHLD
+ move r1, zero
+ }
+ {
+ move r2, zero
+ move r3, zero
+ }
+ moveli TREG_SYSCALL_NR_NAME, __NR_clone
+ swint1
+
+ bnez r1, 0f
+ jrp lr
+PSEUDO_END (__vfork)
+libc_hidden_def (vfork)
+
+weak_alias (__vfork, vfork)