ia64/linux-2.6.18-xen.hg

view arch/mips/kernel/scall64-n32.S @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01 by Ralf Baechle
7 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
8 * Copyright (C) 2001 MIPS Technologies, Inc.
9 */
10 #include <linux/errno.h>
11 #include <asm/asm.h>
12 #include <asm/asmmacro.h>
13 #include <asm/irqflags.h>
14 #include <asm/mipsregs.h>
15 #include <asm/regdef.h>
16 #include <asm/stackframe.h>
17 #include <asm/thread_info.h>
18 #include <asm/unistd.h>
20 /* This duplicates the definition from <linux/sched.h> */
21 #define PT_TRACESYS 0x00000002 /* tracing system calls */
23 /* This duplicates the definition from <asm/signal.h> */
24 #define SIGILL 4 /* Illegal instruction (ANSI). */
26 #ifndef CONFIG_MIPS32_O32
27 /* No O32, so define handle_sys here */
28 #define handle_sysn32 handle_sys
29 #endif
31 .align 5
32 NESTED(handle_sysn32, PT_SIZE, sp)
33 #ifndef CONFIG_MIPS32_O32
34 .set noat
35 SAVE_SOME
36 TRACE_IRQS_ON
37 STI
38 .set at
39 #endif
41 dsubu t0, v0, __NR_N32_Linux # check syscall number
42 sltiu t0, t0, __NR_N32_Linux_syscalls + 1
44 #ifndef CONFIG_MIPS32_O32
45 ld t1, PT_EPC(sp) # skip syscall on return
46 daddiu t1, 4 # skip to next instruction
47 sd t1, PT_EPC(sp)
48 #endif
49 beqz t0, not_n32_scall
51 dsll t0, v0, 3 # offset into table
52 ld t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0)
54 sd a3, PT_R26(sp) # save a3 for syscall restarting
56 li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
57 LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
58 and t0, t1, t0
59 bnez t0, n32_syscall_trace_entry
61 jalr t2 # Do The Real Thing (TM)
63 li t0, -EMAXERRNO - 1 # error?
64 sltu t0, t0, v0
65 sd t0, PT_R7(sp) # set error flag
66 beqz t0, 1f
68 dnegu v0 # error
69 sd v0, PT_R0(sp) # set flag for syscall restarting
70 1: sd v0, PT_R2(sp) # result
72 local_irq_disable # make sure need_resched and
73 # signals dont change between
74 # sampling and return
75 LONG_L a2, TI_FLAGS($28) # current->work
76 li t0, _TIF_ALLWORK_MASK
77 and t0, a2, t0
78 bnez t0, n32_syscall_exit_work
80 j restore_partial
82 n32_syscall_exit_work:
83 j syscall_exit_work_partial
85 /* ------------------------------------------------------------------------ */
87 n32_syscall_trace_entry:
88 SAVE_STATIC
89 move s0, t2
90 move a0, sp
91 li a1, 0
92 jal do_syscall_trace
94 move t0, s0
95 RESTORE_STATIC
96 ld a0, PT_R4(sp) # Restore argument registers
97 ld a1, PT_R5(sp)
98 ld a2, PT_R6(sp)
99 ld a3, PT_R7(sp)
100 ld a4, PT_R8(sp)
101 ld a5, PT_R9(sp)
102 jalr t0
104 li t0, -EMAXERRNO - 1 # error?
105 sltu t0, t0, v0
106 sd t0, PT_R7(sp) # set error flag
107 beqz t0, 1f
109 dnegu v0 # error
110 sd v0, PT_R0(sp) # set flag for syscall restarting
111 1: sd v0, PT_R2(sp) # result
113 j syscall_exit
115 not_n32_scall:
116 /* This is not an n32 compatibility syscall, pass it on to
117 the n64 syscall handlers. */
118 j handle_sys64
120 END(handle_sysn32)
122 EXPORT(sysn32_call_table)
123 PTR sys_read /* 6000 */
124 PTR sys_write
125 PTR sys_open
126 PTR sys_close
127 PTR sys_newstat
128 PTR sys_newfstat /* 6005 */
129 PTR sys_newlstat
130 PTR sys_poll
131 PTR sys_lseek
132 PTR old_mmap
133 PTR sys_mprotect /* 6010 */
134 PTR sys_munmap
135 PTR sys_brk
136 PTR sys32_rt_sigaction
137 PTR sys32_rt_sigprocmask
138 PTR compat_sys_ioctl /* 6015 */
139 PTR sys_pread64
140 PTR sys_pwrite64
141 PTR compat_sys_readv
142 PTR compat_sys_writev
143 PTR sys_access /* 6020 */
144 PTR sys_pipe
145 PTR compat_sys_select
146 PTR sys_sched_yield
147 PTR sys_mremap
148 PTR sys_msync /* 6025 */
149 PTR sys_mincore
150 PTR sys_madvise
151 PTR sys_shmget
152 PTR sys32_shmat
153 PTR sys_shmctl /* 6030 */
154 PTR sys_dup
155 PTR sys_dup2
156 PTR sys_pause
157 PTR compat_sys_nanosleep
158 PTR compat_sys_getitimer /* 6035 */
159 PTR compat_sys_setitimer
160 PTR sys_alarm
161 PTR sys_getpid
162 PTR sys32_sendfile
163 PTR sys_socket /* 6040 */
164 PTR sys_connect
165 PTR sys_accept
166 PTR sys_sendto
167 PTR sys_recvfrom
168 PTR compat_sys_sendmsg /* 6045 */
169 PTR compat_sys_recvmsg
170 PTR sys_shutdown
171 PTR sys_bind
172 PTR sys_listen
173 PTR sys_getsockname /* 6050 */
174 PTR sys_getpeername
175 PTR sys_socketpair
176 PTR compat_sys_setsockopt
177 PTR sys_getsockopt
178 PTR sys_clone /* 6055 */
179 PTR sys_fork
180 PTR sys32_execve
181 PTR sys_exit
182 PTR compat_sys_wait4
183 PTR sys_kill /* 6060 */
184 PTR sys32_newuname
185 PTR sys_semget
186 PTR sys_semop
187 PTR sys_semctl
188 PTR sys_shmdt /* 6065 */
189 PTR sys_msgget
190 PTR sys_msgsnd
191 PTR sys_msgrcv
192 PTR sys_msgctl
193 PTR compat_sys_fcntl /* 6070 */
194 PTR sys_flock
195 PTR sys_fsync
196 PTR sys_fdatasync
197 PTR sys_truncate
198 PTR sys_ftruncate /* 6075 */
199 PTR compat_sys_getdents
200 PTR sys_getcwd
201 PTR sys_chdir
202 PTR sys_fchdir
203 PTR sys_rename /* 6080 */
204 PTR sys_mkdir
205 PTR sys_rmdir
206 PTR sys_creat
207 PTR sys_link
208 PTR sys_unlink /* 6085 */
209 PTR sys_symlink
210 PTR sys_readlink
211 PTR sys_chmod
212 PTR sys_fchmod
213 PTR sys_chown /* 6090 */
214 PTR sys_fchown
215 PTR sys_lchown
216 PTR sys_umask
217 PTR sys32_gettimeofday
218 PTR compat_sys_getrlimit /* 6095 */
219 PTR compat_sys_getrusage
220 PTR sys32_sysinfo
221 PTR compat_sys_times
222 PTR sys32_ptrace
223 PTR sys_getuid /* 6100 */
224 PTR sys_syslog
225 PTR sys_getgid
226 PTR sys_setuid
227 PTR sys_setgid
228 PTR sys_geteuid /* 6105 */
229 PTR sys_getegid
230 PTR sys_setpgid
231 PTR sys_getppid
232 PTR sys_getpgrp
233 PTR sys_setsid /* 6110 */
234 PTR sys_setreuid
235 PTR sys_setregid
236 PTR sys_getgroups
237 PTR sys_setgroups
238 PTR sys_setresuid /* 6115 */
239 PTR sys_getresuid
240 PTR sys_setresgid
241 PTR sys_getresgid
242 PTR sys_getpgid
243 PTR sys_setfsuid /* 6120 */
244 PTR sys_setfsgid
245 PTR sys_getsid
246 PTR sys_capget
247 PTR sys_capset
248 PTR sys32_rt_sigpending /* 6125 */
249 PTR compat_sys_rt_sigtimedwait
250 PTR sys_rt_sigqueueinfo
251 PTR sysn32_rt_sigsuspend
252 PTR sys32_sigaltstack
253 PTR compat_sys_utime /* 6130 */
254 PTR sys_mknod
255 PTR sys32_personality
256 PTR sys32_ustat
257 PTR compat_sys_statfs
258 PTR compat_sys_fstatfs /* 6135 */
259 PTR sys_sysfs
260 PTR sys_getpriority
261 PTR sys_setpriority
262 PTR sys_sched_setparam
263 PTR sys_sched_getparam /* 6140 */
264 PTR sys_sched_setscheduler
265 PTR sys_sched_getscheduler
266 PTR sys_sched_get_priority_max
267 PTR sys_sched_get_priority_min
268 PTR sys32_sched_rr_get_interval /* 6145 */
269 PTR sys_mlock
270 PTR sys_munlock
271 PTR sys_mlockall
272 PTR sys_munlockall
273 PTR sys_vhangup /* 6150 */
274 PTR sys_pivot_root
275 PTR sys32_sysctl
276 PTR sys_prctl
277 PTR compat_sys_adjtimex
278 PTR compat_sys_setrlimit /* 6155 */
279 PTR sys_chroot
280 PTR sys_sync
281 PTR sys_acct
282 PTR sys32_settimeofday
283 PTR sys_mount /* 6160 */
284 PTR sys_umount
285 PTR sys_swapon
286 PTR sys_swapoff
287 PTR sys_reboot
288 PTR sys_sethostname /* 6165 */
289 PTR sys_setdomainname
290 PTR sys_ni_syscall /* was create_module */
291 PTR sys_init_module
292 PTR sys_delete_module
293 PTR sys_ni_syscall /* 6170, was get_kernel_syms */
294 PTR sys_ni_syscall /* was query_module */
295 PTR sys_quotactl
296 PTR sys_nfsservctl
297 PTR sys_ni_syscall /* res. for getpmsg */
298 PTR sys_ni_syscall /* 6175 for putpmsg */
299 PTR sys_ni_syscall /* res. for afs_syscall */
300 PTR sys_ni_syscall /* res. for security */
301 PTR sys_gettid
302 PTR sys32_readahead
303 PTR sys_setxattr /* 6180 */
304 PTR sys_lsetxattr
305 PTR sys_fsetxattr
306 PTR sys_getxattr
307 PTR sys_lgetxattr
308 PTR sys_fgetxattr /* 6185 */
309 PTR sys_listxattr
310 PTR sys_llistxattr
311 PTR sys_flistxattr
312 PTR sys_removexattr
313 PTR sys_lremovexattr /* 6190 */
314 PTR sys_fremovexattr
315 PTR sys_tkill
316 PTR sys_ni_syscall
317 PTR compat_sys_futex
318 PTR compat_sys_sched_setaffinity /* 6195 */
319 PTR compat_sys_sched_getaffinity
320 PTR sys_cacheflush
321 PTR sys_cachectl
322 PTR sys_sysmips
323 PTR sys_io_setup /* 6200 */
324 PTR sys_io_destroy
325 PTR sys_io_getevents
326 PTR sys_io_submit
327 PTR sys_io_cancel
328 PTR sys_exit_group /* 6205 */
329 PTR sys_lookup_dcookie
330 PTR sys_epoll_create
331 PTR sys_epoll_ctl
332 PTR sys_epoll_wait
333 PTR sys_remap_file_pages /* 6210 */
334 PTR sysn32_rt_sigreturn
335 PTR compat_sys_fcntl64
336 PTR sys_set_tid_address
337 PTR sys_restart_syscall
338 PTR sys_semtimedop /* 6215 */
339 PTR sys_fadvise64_64
340 PTR compat_sys_statfs64
341 PTR compat_sys_fstatfs64
342 PTR sys_sendfile64
343 PTR sys32_timer_create /* 6220 */
344 PTR compat_sys_timer_settime
345 PTR compat_sys_timer_gettime
346 PTR sys_timer_getoverrun
347 PTR sys_timer_delete
348 PTR compat_sys_clock_settime /* 6225 */
349 PTR compat_sys_clock_gettime
350 PTR compat_sys_clock_getres
351 PTR compat_sys_clock_nanosleep
352 PTR sys_tgkill
353 PTR compat_sys_utimes /* 6230 */
354 PTR sys_ni_syscall /* sys_mbind */
355 PTR sys_ni_syscall /* sys_get_mempolicy */
356 PTR sys_ni_syscall /* sys_set_mempolicy */
357 PTR compat_sys_mq_open
358 PTR sys_mq_unlink /* 6235 */
359 PTR compat_sys_mq_timedsend
360 PTR compat_sys_mq_timedreceive
361 PTR compat_sys_mq_notify
362 PTR compat_sys_mq_getsetattr
363 PTR sys_ni_syscall /* 6240, sys_vserver */
364 PTR sysn32_waitid
365 PTR sys_ni_syscall /* available, was setaltroot */
366 PTR sys_add_key
367 PTR sys_request_key
368 PTR sys_keyctl /* 6245 */
369 PTR sys_set_thread_area
370 PTR sys_inotify_init
371 PTR sys_inotify_add_watch
372 PTR sys_inotify_rm_watch
373 PTR sys_migrate_pages /* 6250 */
374 PTR sys_openat
375 PTR sys_mkdirat
376 PTR sys_mknodat
377 PTR sys_fchownat
378 PTR sys_futimesat /* 6255 */
379 PTR sys_newfstatat
380 PTR sys_unlinkat
381 PTR sys_renameat
382 PTR sys_linkat
383 PTR sys_symlinkat /* 6260 */
384 PTR sys_readlinkat
385 PTR sys_fchmodat
386 PTR sys_faccessat
387 PTR sys_pselect6
388 PTR sys_ppoll /* 6265 */
389 PTR sys_unshare
390 PTR sys_splice
391 PTR sys_sync_file_range
392 PTR sys_tee
393 PTR sys_vmsplice /* 6271 */
394 PTR sys_move_pages