Add support for ARC to libgloss

ChangeLog:
2015-11-12  Anton Kolesov  <Anton.Kolesov@synopsys.com>

	* configure.in: Add ARC support to libgloss.
	* configure: Regenerate.

libgloss/ChangeLog:
2015-11-12  Anton Kolesov  <Anton.Kolesov@synopsys.com>

	* configure: Add ARC support.
	* configure.in: Likewise.
	* arc/Makefile.in: Likewise.
	* arc/aclocal.m4: Likewise.
	* arc/configure: Likewise.
	* arc/configure.in: Likewise.
	* arc/crt0.S: Likewise.
	* arc/libcfunc.c: Likewise.
	* arc/nsim-syscall.h: Likewise.
	* arc/nsim-syscalls.c: Likewise.
	* arc/nsim.specs: Likewise.
	* arc/sbrk.c: Likewise.

1 files changed, 457 insertions, 0 deletions

diff --git a/libgloss/arc/nsim-syscall.h b/libgloss/arc/nsim-syscall.h
new file mode 100644
index 000000000..a2009f5b2
--- /dev/null
+++ b/libgloss/arc/nsim-syscall.h
@@ -0,0 +1,457 @@
+/*
+   Copyright (c) 2015, Synopsys, Inc. All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+   1) Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2) Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+   3) Neither the name of the Synopsys, Inc., nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef _ASM_ARC_UNISTD_H
+#define _ASM_ARC_UNISTD_H
+
+#include <stdint.h>
+
+#ifndef __ASSEMBLY__
+/* This file contains the system call numbers. Not all are implemented in nSIM
+   hostlink. Numbers correspond to the old ARCLinux syscalls, but during
+   upstreaming of ARC Linux, those numbers has been changed, hence today ARC
+   Linux and nSIM hostlink use different system call numbers.  */
+
+#define SYS_exit		  1
+#define SYS__exit	   SYS_exit
+#define SYS_fork		  2
+#define SYS_read		  3
+#define SYS_write		  4
+#define SYS_open		  5
+#define SYS_close		  6
+#define SYS_waitpid		  7
+#define SYS_creat		  8
+#define SYS_link		  9
+#define SYS_unlink		 10
+#define SYS_execve		 11
+#define SYS_chdir		 12
+#define SYS_time		 13
+#define SYS_mknod		 14
+#define SYS_chmod		 15
+#define SYS_chown		 16
+#define SYS_break		 17
+#define SYS_oldstat		 18
+#define SYS_lseek		 19
+#define SYS_getpid		 20
+#define SYS_mount		 21
+#define SYS_umount		 22
+#define SYS_setuid		 23
+#define SYS_getuid		 24
+#define SYS_stime		 25
+#define SYS_ptrace		 26
+#define SYS_alarm		 27
+#define SYS_oldfstat		 28
+#define SYS_pause		 29
+#define SYS_utime		 30
+#define SYS_stty		 31
+#define SYS_gtty		 32
+#define SYS_access		 33
+#define SYS_nice		 34
+#define SYS_ftime		 35
+#define SYS_sync		 36
+#define SYS_kill		 37
+#define SYS_rename		 38
+#define SYS_mkdir		 39
+#define SYS_rmdir		 40
+#define SYS_dup			 41
+#define SYS_pipe		 42
+#define SYS_times		 43
+#define SYS_prof		 44
+#define SYS_brk			 45
+#define SYS_setgid		 46
+#define SYS_getgid		 47
+#define SYS_signal		 48
+#define SYS_geteuid		 49
+#define SYS_getegid		 50
+#define SYS_acct		 51
+#define SYS_umount2		 52
+#define SYS_lock		 53
+#define SYS_ioctl		 54
+#define SYS_fcntl		 55
+#define SYS_mpx			 56
+#define SYS_setpgid		 57
+#define SYS_ulimit		 58
+#define SYS_oldolduname		 59
+#define SYS_umask		 60
+#define SYS_chroot		 61
+#define SYS_ustat		 62
+#define SYS_dup2		 63
+#define SYS_getppid		 64
+#define SYS_getpgrp		 65
+#define SYS_setsid		 66
+#define SYS_sigaction		 67
+#define SYS_sgetmask		 68
+#define SYS_ssetmask		 69
+#define SYS_setreuid		 70
+#define SYS_setregid		 71
+#define SYS_sigsuspend		 72
+#define SYS_sigpending		 73
+#define SYS_sethostname		 74
+#define SYS_setrlimit		 75
+#define SYS_old_getrlimit	 76
+#define SYS_getrusage		 77
+#define SYS_gettimeofday	 78
+#define SYS_settimeofday	 79
+#define SYS_getgroups		 80
+#define SYS_setgroups		 81
+#define SYS_select		 82
+#define SYS_symlink		 83
+#define SYS_oldlstat		 84
+#define SYS_readlink		 85
+#define SYS_uselib		 86
+#define SYS_swapon		 87
+#define SYS_reboot		 88
+#define SYS_readdir		 89
+#define SYS_mmap		 90
+#define SYS_munmap		 91
+#define SYS_truncate		 92
+#define SYS_ftruncate		 93
+#define SYS_fchmod		 94
+#define SYS_fchown		 95
+#define SYS_getpriority		 96
+#define SYS_setpriority		 97
+#define SYS_profil		 98
+#define SYS_statfs		 99
+#define SYS_fstatfs		100
+#define SYS_ioperm		101
+#define SYS_socketcall		102
+#define SYS_syslog		103
+#define SYS_setitimer		104
+#define SYS_getitimer		105
+#define SYS_stat		106
+#define SYS_lstat		107
+#define SYS_fstat		108
+#define SYS_olduname		109
+#define SYS_iopl		110  /* not supported  */
+#define SYS_vhangup		111
+#define SYS_idle		112 /* Obsolete  */
+#define SYS_vm86		113 /* not supported  */
+#define SYS_wait4		114
+#define SYS_swapoff		115
+#define SYS_sysinfo		116
+#define SYS_ipc			117
+#define SYS_fsync		118
+#define SYS_sigreturn		119
+#define SYS_clone		120
+#define SYS_setdomainname	121
+#define SYS_uname		122
+#define SYS_cacheflush		123
+#define SYS_adjtimex		124
+#define SYS_mprotect		125
+#define SYS_sigprocmask		126
+#define SYS_create_module	127
+#define SYS_init_module		128
+#define SYS_delete_module	129
+#define SYS_get_kernel_syms	130
+#define SYS_quotactl		131
+#define SYS_getpgid		132
+#define SYS_fchdir		133
+#define SYS_bdflush		134
+#define SYS_sysfs		135
+#define SYS_personality		136
+#define SYS_afs_syscall		137 /* Syscall for Andrew File System  */
+#define SYS_setfsuid		138
+#define SYS_setfsgid		139
+#define SYS__llseek		140
+#define SYS_getdents		141
+#define SYS__newselect		142
+#define SYS_flock		143
+#define SYS_msync		144
+#define SYS_readv		145
+#define SYS_writev		146
+#define SYS_getsid		147
+#define SYS_fdatasync		148
+#define SYS__sysctl		149
+#define SYS_mlock		150
+#define SYS_munlock		151
+#define SYS_mlockall		152
+#define SYS_munlockall		153
+#define SYS_sched_setparam	154
+#define SYS_sched_getparam	155
+#define SYS_sched_setscheduler	156
+#define SYS_sched_getscheduler	157
+#define SYS_sched_yield		158
+#define SYS_sched_get_priority_max	159
+#define SYS_sched_get_priority_min	160
+#define SYS_sched_rr_get_interval	161
+#define SYS_nanosleep		162
+#define SYS_mremap		163
+#define SYS_setresuid		164
+#define SYS_getresuid		165
+#define SYS_query_module	167
+#define SYS_poll		168
+#define SYS_nfsservctl		169
+#define SYS_setresgid		170
+#define SYS_getresgid		171
+#define SYS_prctl		172
+#define SYS_rt_sigreturn	173
+#define SYS_rt_sigaction	174
+#define SYS_rt_sigprocmask	175
+#define SYS_rt_sigpending	176
+#define SYS_rt_sigtimedwait	177
+#define SYS_rt_sigqueueinfo	178
+#define SYS_rt_sigsuspend	179
+#define SYS_pread		180
+#define SYS_pwrite		181
+#define SYS_lchown		182
+#define SYS_getcwd		183
+#define SYS_capget		184
+#define SYS_capset		185
+#define SYS_sigaltstack		186
+#define SYS_sendfile		187
+#define SYS_getpmsg		188	/* some people actually want streams  */
+#define SYS_putpmsg		189	/* some people actually want streams  */
+#define SYS_vfork		190
+#define SYS_getrlimit		191
+#define SYS_mmap2		192
+#define SYS_truncate64		193
+#define SYS_ftruncate64		194
+#define SYS_stat64		195
+#define SYS_lstat64		196
+#define SYS_fstat64		197
+#define SYS_chown32		198
+#define SYS_getuid32		199
+#define SYS_getgid32		200
+#define SYS_geteuid32		201
+#define SYS_getegid32		202
+#define SYS_setreuid32		203
+#define SYS_setregid32		204
+#define SYS_getgroups32		205
+#define SYS_setgroups32		206
+#define SYS_fchown32		207
+#define SYS_setresuid32		208
+#define SYS_getresuid32		209
+#define SYS_setresgid32		210
+#define SYS_getresgid32		211
+#define SYS_lchown32		212
+#define SYS_setuid32		213
+#define SYS_setgid32		214
+#define SYS_setfsuid32		215
+#define SYS_setfsgid32		216
+#define SYS_pivot_root		217
+#define SYS_getdents64		220
+#define SYS_fcntl64		221
+#define SYS_gettid		224
+
+#endif	/* ! __ASSEMBLY__ */
+
+#ifdef __ARC700__
+#define SYSCALL \
+			"trap0	\n\t"
+#else
+#define SYSCALL	\
+			"swi	\n\t"\
+			"nop	\n\t"\
+			"nop	\n\t"
+#endif /* __ARC700__ */
+
+/* There are two variants of macroses here:
+   - _syscall is a complete function definition of system call
+   - _naked_syscall only invokes system call and can be inserted into other
+     functions.  This macro is defined only for those syscall<N>, where it is
+     actually used.  */
+
+#define _syscall0(type, name)					\
+type _##name ()							\
+{								\
+	long __res;						\
+	__asm__ __volatile__ ("mov	r8, %1\n\t"		\
+			SYSCALL					\
+			"mov	%0, r0"				\
+			: "=r" (__res)				\
+			: "i" (SYS_##name)			\
+			: "cc", "r0", "r8");			\
+	if ((unsigned long)(__res) >= (unsigned long)(-125)) {	\
+		errno = -__res;					\
+		__res = -1;					\
+	}							\
+	return (type)__res;					\
+}
+
+#define _syscall1(type, name, atype, a)			\
+type _##name (atype a)						\
+{								\
+	long __res;						\
+	__asm__ __volatile__ ("mov	r0, %2\n\t"		\
+			"mov	r8, %1\n\t"			\
+			SYSCALL					\
+			"mov	%0, r0"				\
+			: "=r" (__res)				\
+			: "i" (SYS_##name),			\
+			  "r" ((long)a)				\
+			: "cc", "r0", "r8");			\
+	if ((unsigned long)(__res) >= (unsigned long)(-125)) {	\
+		errno = -__res;					\
+		__res = -1;					\
+	}							\
+	return (type)__res;					\
+}
+
+#define _naked_syscall2(__res, name, a, b)			\
+	__asm__ __volatile__ ("mov	r1, %3\n\t"		\
+			"mov	r0, %2\n\t"			\
+			"mov	r8, %1\n\t"			\
+			SYSCALL					\
+			"mov	%0, r0"				\
+			: "=r" (__res)				\
+			: "i" (SYS_##name),			\
+			  "r" ((long)a),			\
+			  "r" ((long)b)				\
+			: "cc", "r0", "r1", "r8");		\
+	if ((unsigned long)(__res) >= (unsigned long)(-125)) {	\
+		errno = -__res;					\
+		__res = -1;					\
+	}
+
+#define _syscall2(type, name, atype, a, btype, b)		\
+type _##name (atype a, btype b)					\
+{								\
+	long __res;						\
+	_naked_syscall2 (__res, name, a, b)			\
+	return (type)__res;					\
+}
+
+#define _naked_syscall3(__res, name, a, b, c)			\
+	__asm__ __volatile__ (					\
+			"mov	r2, %4\n\t"			\
+			"mov	r1, %3\n\t"			\
+			"mov	r0, %2\n\t"			\
+			"mov	r8, %1\n\t"			\
+			SYSCALL					\
+			"mov	%0, r0"				\
+			: "=r" (__res)				\
+			: "i" (SYS_##name),			\
+			  "r" ((long)a),			\
+			  "r" ((long)b),			\
+			  "r" ((long)c)				\
+			: "cc", "r0", "r1", "r2", "r8");	\
+	if ((unsigned long)(__res) >= (unsigned long)(-125)) {	\
+		errno = -__res;					\
+		__res = -1;					\
+	}
+
+#define _syscall3(type,name,atype,a,btype,b,ctype,c)		\
+type _##name (atype a, btype b, ctype c)			\
+{								\
+	long __res;						\
+	_naked_syscall3 (__res, name, a, b, c)			\
+	return (type)__res;					\
+}
+
+#define _syscall4(type, name, atype, a, btype, b, ctype, c, dtype, d)	\
+type _##name (atype a, btype b, ctype c, dtype d)			\
+{									\
+	long __res;							\
+	__asm__ __volatile__ (						\
+			"mov	r3, %5\n\t"				\
+			"mov	r2, %4\n\t"				\
+			"mov	r1, %3\n\t"				\
+			"mov	r0, %2\n\t"				\
+			"mov	r8, %1\n\t"				\
+			SYSCALL						\
+			"mov	%0, r0"					\
+			: "=r" (__res)					\
+			: "i" (SYS_##name),				\
+			  "r" ((long)a),				\
+			  "r" ((long)b),				\
+			  "r" ((long)c),				\
+			  "r" ((long)d)					\
+			: "cc", "r0", "r1", "r2", "r3", "r8");		\
+	if ((unsigned long)(__res) >= (unsigned long)(-125)) {		\
+		errno = -__res;						\
+		__res = -1;						\
+	}								\
+	return (type)__res;						\
+}
+
+#define _syscall5(type, name, atype, a, btype, b, ctype, c, dtype, d,	\
+	etype, e)							\
+type _##name (atype a, btype b, ctype c, dtype d, etype e)		\
+{									\
+	long __res;							\
+	__asm__ __volatile__ (						\
+			"mov	r4, %6\n\t"				\
+			"mov	r3, %5\n\t"				\
+			"mov	r2, %4\n\t"				\
+			"mov	r1, %3\n\t"				\
+			"mov	r0, %2\n\t"				\
+			"mov	r8, %1\n\t"				\
+			SYSCALL						\
+			"mov	%0, r0"					\
+			: "=r" (__res)					\
+			: "i" (SYS_##name),				\
+			  "r" ((long)a),				\
+			  "r" ((long)b),				\
+			  "r" ((long)c),				\
+			  "r" ((long)d),				\
+			  "r" ((long)e)					\
+			: "cc", "r0", "r1", "r2", "r3", "r4", "r8");	\
+	if ((unsigned long)(__res) >= (unsigned long)(-125)) {		\
+		errno = -__res;						\
+		__res = -1;						\
+	}								\
+	return (type)__res;						\
+}
+
+/* open() flags that are used by nSIM hostlink.  See comment for _open()
+   implementation in nsim-syscalls.c.  */
+#define ARC_LINUX_RDONLY 0
+#define ARC_LINUX_WRONLY 1
+#define ARC_LINUX_RDWR   2
+#define ARC_LINUX_CREAT  0x0040
+#define ARC_LINUX_APPEND 0x0400
+#define ARC_LINUX_TRUNC  0x0200
+#define ARC_LINUX_EXCL   0x0080
+
+/* stat structure as defined in nSIM hostlink.  */
+struct nsim_stat {
+	uint16_t dev;
+	uint16_t __pad1;
+	uint32_t ino;
+	uint16_t mode;
+	uint16_t nlink;
+	uint16_t uid;
+	uint16_t gid;
+	uint16_t rdev;
+	uint16_t __pad2;
+	uint32_t size;
+	uint32_t blksize;
+	uint32_t blocks;
+	uint32_t atime;
+	uint32_t __unused1;
+	uint32_t mtime;
+	uint32_t __unused2;
+	uint32_t ctime;
+	uint32_t __unused3;
+	uint32_t __unused4;
+	uint32_t __unused5;
+};
+
+#endif	/* _ASM_ARC_UNISTD_H */