diff options
Diffstat (limited to 'libc/sysdeps/linux/tile')
31 files changed, 2043 insertions, 0 deletions
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) |