mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-07 11:04:14 +08:00
135ab6ec8f
The last in-kernel user of errno is gone, so we should remove the definition and everything referring to it. This also removes the now-unused lib/execve.c file that was introduced earlier. Also remove every trace of __KERNEL_SYSCALLS__ that still remained in the kernel. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Andi Kleen <ak@muc.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Hirokazu Takata <takata.hirokazu@renesas.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
420 lines
12 KiB
C
420 lines
12 KiB
C
/*
|
|
* include/asm-xtensa/unistd.h
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2001 - 2005 Tensilica Inc.
|
|
*/
|
|
|
|
#ifndef _XTENSA_UNISTD_H
|
|
#define _XTENSA_UNISTD_H
|
|
|
|
#define __NR_spill 0
|
|
#define __NR_exit 1
|
|
#define __NR_read 3
|
|
#define __NR_write 4
|
|
#define __NR_open 5
|
|
#define __NR_close 6
|
|
#define __NR_creat 8
|
|
#define __NR_link 9
|
|
#define __NR_unlink 10
|
|
#define __NR_execve 11
|
|
#define __NR_chdir 12
|
|
#define __NR_mknod 14
|
|
#define __NR_chmod 15
|
|
#define __NR_lchown 16
|
|
#define __NR_break 17
|
|
#define __NR_lseek 19
|
|
#define __NR_getpid 20
|
|
#define __NR_mount 21
|
|
#define __NR_setuid 23
|
|
#define __NR_getuid 24
|
|
#define __NR_ptrace 26
|
|
#define __NR_utime 30
|
|
#define __NR_stty 31
|
|
#define __NR_gtty 32
|
|
#define __NR_access 33
|
|
#define __NR_ftime 35
|
|
#define __NR_sync 36
|
|
#define __NR_kill 37
|
|
#define __NR_rename 38
|
|
#define __NR_mkdir 39
|
|
#define __NR_rmdir 40
|
|
#define __NR_dup 41
|
|
#define __NR_pipe 42
|
|
#define __NR_times 43
|
|
#define __NR_prof 44
|
|
#define __NR_brk 45
|
|
#define __NR_setgid 46
|
|
#define __NR_getgid 47
|
|
#define __NR_signal 48
|
|
#define __NR_geteuid 49
|
|
#define __NR_getegid 50
|
|
#define __NR_acct 51
|
|
#define __NR_lock 53
|
|
#define __NR_ioctl 54
|
|
#define __NR_fcntl 55
|
|
#define __NR_setpgid 57
|
|
#define __NR_ulimit 58
|
|
#define __NR_umask 60
|
|
#define __NR_chroot 61
|
|
#define __NR_ustat 62
|
|
#define __NR_dup2 63
|
|
#define __NR_getppid 64
|
|
#define __NR_setsid 66
|
|
#define __NR_sigaction 67
|
|
#define __NR_setreuid 70
|
|
#define __NR_setregid 71
|
|
#define __NR_sigsuspend 72
|
|
#define __NR_sigpending 73
|
|
#define __NR_sethostname 74
|
|
#define __NR_setrlimit 75
|
|
#define __NR_getrlimit 76 /* Back compatible 2Gig limited rlimit */
|
|
#define __NR_getrusage 77
|
|
#define __NR_gettimeofday 78
|
|
#define __NR_settimeofday 79
|
|
#define __NR_getgroups 80
|
|
#define __NR_setgroups 81
|
|
#define __NR_select 82
|
|
#define __NR_symlink 83
|
|
#define __NR_readlink 85
|
|
#define __NR_uselib 86
|
|
#define __NR_swapon 87
|
|
#define __NR_reboot 88
|
|
#define __NR_munmap 91
|
|
#define __NR_truncate 92
|
|
#define __NR_ftruncate 93
|
|
#define __NR_fchmod 94
|
|
#define __NR_fchown 95
|
|
#define __NR_getpriority 96
|
|
#define __NR_setpriority 97
|
|
#define __NR_profil 98
|
|
#define __NR_statfs 99
|
|
#define __NR_fstatfs 100
|
|
#define __NR_ioperm 101
|
|
#define __NR_syslog 103
|
|
#define __NR_setitimer 104
|
|
#define __NR_getitimer 105
|
|
#define __NR_stat 106
|
|
#define __NR_lstat 107
|
|
#define __NR_fstat 108
|
|
#define __NR_iopl 110
|
|
#define __NR_vhangup 111
|
|
#define __NR_idle 112
|
|
#define __NR_wait4 114
|
|
#define __NR_swapoff 115
|
|
#define __NR_sysinfo 116
|
|
#define __NR_fsync 118
|
|
#define __NR_sigreturn 119
|
|
#define __NR_clone 120
|
|
#define __NR_setdomainname 121
|
|
#define __NR_uname 122
|
|
#define __NR_modify_ldt 123
|
|
#define __NR_adjtimex 124
|
|
#define __NR_mprotect 125
|
|
#define __NR_create_module 127
|
|
#define __NR_init_module 128
|
|
#define __NR_delete_module 129
|
|
#define __NR_quotactl 131
|
|
#define __NR_getpgid 132
|
|
#define __NR_fchdir 133
|
|
#define __NR_bdflush 134
|
|
#define __NR_sysfs 135
|
|
#define __NR_personality 136
|
|
#define __NR_setfsuid 138
|
|
#define __NR_setfsgid 139
|
|
#define __NR__llseek 140
|
|
#define __NR_getdents 141
|
|
#define __NR__newselect 142
|
|
#define __NR_flock 143
|
|
#define __NR_msync 144
|
|
#define __NR_readv 145
|
|
#define __NR_writev 146
|
|
#define __NR_cacheflush 147
|
|
#define __NR_cachectl 148
|
|
#define __NR_sysxtensa 149
|
|
#define __NR_sysdummy 150
|
|
#define __NR_getsid 151
|
|
#define __NR_fdatasync 152
|
|
#define __NR__sysctl 153
|
|
#define __NR_mlock 154
|
|
#define __NR_munlock 155
|
|
#define __NR_mlockall 156
|
|
#define __NR_munlockall 157
|
|
#define __NR_sched_setparam 158
|
|
#define __NR_sched_getparam 159
|
|
#define __NR_sched_setscheduler 160
|
|
#define __NR_sched_getscheduler 161
|
|
#define __NR_sched_yield 162
|
|
#define __NR_sched_get_priority_max 163
|
|
#define __NR_sched_get_priority_min 164
|
|
#define __NR_sched_rr_get_interval 165
|
|
#define __NR_nanosleep 166
|
|
#define __NR_mremap 167
|
|
#define __NR_accept 168
|
|
#define __NR_bind 169
|
|
#define __NR_connect 170
|
|
#define __NR_getpeername 171
|
|
#define __NR_getsockname 172
|
|
#define __NR_getsockopt 173
|
|
#define __NR_listen 174
|
|
#define __NR_recv 175
|
|
#define __NR_recvfrom 176
|
|
#define __NR_recvmsg 177
|
|
#define __NR_send 178
|
|
#define __NR_sendmsg 179
|
|
#define __NR_sendto 180
|
|
#define __NR_setsockopt 181
|
|
#define __NR_shutdown 182
|
|
#define __NR_socket 183
|
|
#define __NR_socketpair 184
|
|
#define __NR_setresuid 185
|
|
#define __NR_getresuid 186
|
|
#define __NR_query_module 187
|
|
#define __NR_poll 188
|
|
#define __NR_nfsservctl 189
|
|
#define __NR_setresgid 190
|
|
#define __NR_getresgid 191
|
|
#define __NR_prctl 192
|
|
#define __NR_rt_sigreturn 193
|
|
#define __NR_rt_sigaction 194
|
|
#define __NR_rt_sigprocmask 195
|
|
#define __NR_rt_sigpending 196
|
|
#define __NR_rt_sigtimedwait 197
|
|
#define __NR_rt_sigqueueinfo 198
|
|
#define __NR_rt_sigsuspend 199
|
|
#define __NR_pread 200
|
|
#define __NR_pwrite 201
|
|
#define __NR_chown 202
|
|
#define __NR_getcwd 203
|
|
#define __NR_capget 204
|
|
#define __NR_capset 205
|
|
#define __NR_sigaltstack 206
|
|
#define __NR_sendfile 207
|
|
#define __NR_mmap2 210
|
|
#define __NR_truncate64 211
|
|
#define __NR_ftruncate64 212
|
|
#define __NR_stat64 213
|
|
#define __NR_lstat64 214
|
|
#define __NR_fstat64 215
|
|
#define __NR_pivot_root 216
|
|
#define __NR_mincore 217
|
|
#define __NR_madvise 218
|
|
#define __NR_getdents64 219
|
|
|
|
/* Keep this last; should always equal the last valid call number. */
|
|
#define __NR_Linux_syscalls 220
|
|
|
|
/* user-visible error numbers are in the range -1 - -125: see
|
|
* <asm-xtensa/errno.h> */
|
|
|
|
#define SYSXTENSA_RESERVED 0 /* don't use this */
|
|
#define SYSXTENSA_ATOMIC_SET 1 /* set variable */
|
|
#define SYSXTENSA_ATOMIC_EXG_ADD 2 /* exchange memory and add */
|
|
#define SYSXTENSA_ATOMIC_ADD 3 /* add to memory */
|
|
#define SYSXTENSA_ATOMIC_CMP_SWP 4 /* compare and swap */
|
|
|
|
#define SYSXTENSA_COUNT 5 /* count of syscall0 functions*/
|
|
|
|
#ifdef __KERNEL__
|
|
#include <linux/linkage.h>
|
|
|
|
#define __syscall_return(type, res) return ((type)(res))
|
|
|
|
/* Tensilica's xt-xcc compiler is much more agressive at code
|
|
* optimization than gcc. Multiple __asm__ statements are
|
|
* insufficient for xt-xcc because subsequent optimization passes
|
|
* (beyond the front-end that knows of __asm__ statements and other
|
|
* such GNU Extensions to C) can modify the register selection for
|
|
* containment of C variables.
|
|
*
|
|
* xt-xcc cannot modify the contents of a single __asm__ statement, so
|
|
* we create single-asm versions of the syscall macros that are
|
|
* suitable and optimal for both xt-xcc and gcc.
|
|
*
|
|
* Linux takes system-call arguments in registers. The following
|
|
* design is optimized for user-land apps (e.g., glibc) which
|
|
* typically have a function wrapper around the "syscall" assembly
|
|
* instruction. It satisfies the Xtensa ABI while minizing argument
|
|
* shifting.
|
|
*
|
|
* The Xtensa ABI and software conventions require the system-call
|
|
* number in a2. If an argument exists in a2, we move it to the next
|
|
* available register. Note that for improved efficiency, we do NOT
|
|
* shift all parameters down one register to maintain the original
|
|
* order.
|
|
*
|
|
* At best case (zero arguments), we just write the syscall number to
|
|
* a2. At worst case (1 to 6 arguments), we move the argument in a2
|
|
* to the next available register, then write the syscall number to
|
|
* a2.
|
|
*
|
|
* For clarity, the following truth table enumerates all possibilities.
|
|
*
|
|
* arguments syscall number arg0, arg1, arg2, arg3, arg4, arg5
|
|
* --------- -------------- ----------------------------------
|
|
* 0 a2
|
|
* 1 a2 a3
|
|
* 2 a2 a4, a3
|
|
* 3 a2 a5, a3, a4
|
|
* 4 a2 a6, a3, a4, a5
|
|
* 5 a2 a7, a3, a4, a5, a6
|
|
* 6 a2 a8, a3, a4, a5, a6, a7
|
|
*/
|
|
|
|
#define _syscall0(type,name) \
|
|
type name(void) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name) \
|
|
: "a2" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
#define _syscall1(type,name,type0,arg0) \
|
|
type name(type0 arg0) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" mov a3, %2 \n" \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name), "a" (arg0) \
|
|
: "a2", "a3" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
#define _syscall2(type,name,type0,arg0,type1,arg1) \
|
|
type name(type0 arg0,type1 arg1) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" mov a4, %2 \n" \
|
|
" mov a3, %3 \n" \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name), "a" (arg0), "a" (arg1) \
|
|
: "a2", "a3", "a4" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
#define _syscall3(type,name,type0,arg0,type1,arg1,type2,arg2) \
|
|
type name(type0 arg0,type1 arg1,type2 arg2) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" mov a5, %2 \n" \
|
|
" mov a4, %4 \n" \
|
|
" mov a3, %3 \n" \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2) \
|
|
: "a2", "a3", "a4", "a5" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
#define _syscall4(type,name,type0,arg0,type1,arg1,type2,arg2,type3,arg3) \
|
|
type name(type0 arg0,type1 arg1,type2 arg2,type3 arg3) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" mov a6, %2 \n" \
|
|
" mov a5, %5 \n" \
|
|
" mov a4, %4 \n" \
|
|
" mov a3, %3 \n" \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2), "a" (arg3) \
|
|
: "a2", "a3", "a4", "a5", "a6" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
/* Note that we save and restore the a7 frame pointer.
|
|
* Including a7 in the clobber list doesn't do what you'd expect.
|
|
*/
|
|
#define _syscall5(type,name,type0,arg0,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
|
|
type name(type0 arg0,type1 arg1,type2 arg2,type3 arg3,type4 arg4) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" mov a9, a7 \n" \
|
|
" mov a7, %2 \n" \
|
|
" mov a6, %6 \n" \
|
|
" mov a5, %5 \n" \
|
|
" mov a4, %4 \n" \
|
|
" mov a3, %3 \n" \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov a7, a9 \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2), \
|
|
"a" (arg3), "a" (arg4) \
|
|
: "a2", "a3", "a4", "a5", "a6", "a9" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
/* Note that we save and restore the a7 frame pointer.
|
|
* Including a7 in the clobber list doesn't do what you'd expect.
|
|
*/
|
|
#define _syscall6(type,name,type0,arg0,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
|
|
type name(type0 arg0,type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
|
|
{ \
|
|
long __res; \
|
|
__asm__ __volatile__ ( \
|
|
" mov a9, a7 \n" \
|
|
" mov a8, %2 \n" \
|
|
" mov a7, %7 \n" \
|
|
" mov a6, %6 \n" \
|
|
" mov a5, %5 \n" \
|
|
" mov a4, %4 \n" \
|
|
" mov a3, %3 \n" \
|
|
" movi a2, %1 \n" \
|
|
" syscall \n" \
|
|
" mov a7, a9 \n" \
|
|
" mov %0, a2 \n" \
|
|
: "=a" (__res) \
|
|
: "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2), \
|
|
"a" (arg3), "a" (arg4), "a" (arg5) \
|
|
: "a2", "a3", "a4", "a5", "a6", "a8", "a9" \
|
|
); \
|
|
__syscall_return(type,__res); \
|
|
}
|
|
|
|
/*
|
|
* "Conditional" syscalls
|
|
*
|
|
* What we want is __attribute__((weak,alias("sys_ni_syscall"))),
|
|
* but it doesn't work on all toolchains, so we just do it by hand
|
|
*/
|
|
#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");
|
|
|
|
#define __ARCH_WANT_STAT64
|
|
#define __ARCH_WANT_SYS_UTIME
|
|
#define __ARCH_WANT_SYS_LLSEEK
|
|
#define __ARCH_WANT_SYS_RT_SIGACTION
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _XTENSA_UNISTD_H */
|