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Merge branches 'arch-alpha', 'arch-arm', 'arch-arm64', 'arch-avr32', 'arch-blackfin...
[deliverable/linux.git] / arch / sparc / kernel / signal_64.c
1 /*
2 * arch/sparc64/kernel/signal.c
3 *
4 * Copyright (C) 1991, 1992 Linus Torvalds
5 * Copyright (C) 1995, 2008 David S. Miller (davem@davemloft.net)
6 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
7 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
8 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
9 */
10
11 #ifdef CONFIG_COMPAT
12 #include <linux/compat.h> /* for compat_old_sigset_t */
13 #endif
14 #include <linux/sched.h>
15 #include <linux/kernel.h>
16 #include <linux/signal.h>
17 #include <linux/errno.h>
18 #include <linux/wait.h>
19 #include <linux/ptrace.h>
20 #include <linux/tracehook.h>
21 #include <linux/unistd.h>
22 #include <linux/mm.h>
23 #include <linux/tty.h>
24 #include <linux/binfmts.h>
25 #include <linux/bitops.h>
26
27 #include <asm/uaccess.h>
28 #include <asm/ptrace.h>
29 #include <asm/pgtable.h>
30 #include <asm/fpumacro.h>
31 #include <asm/uctx.h>
32 #include <asm/siginfo.h>
33 #include <asm/visasm.h>
34 #include <asm/switch_to.h>
35 #include <asm/cacheflush.h>
36
37 #include "entry.h"
38 #include "systbls.h"
39 #include "sigutil.h"
40
41 /* {set, get}context() needed for 64-bit SparcLinux userland. */
42 asmlinkage void sparc64_set_context(struct pt_regs *regs)
43 {
44 struct ucontext __user *ucp = (struct ucontext __user *)
45 regs->u_regs[UREG_I0];
46 mc_gregset_t __user *grp;
47 unsigned long pc, npc, tstate;
48 unsigned long fp, i7;
49 unsigned char fenab;
50 int err;
51
52 flush_user_windows();
53 if (get_thread_wsaved() ||
54 (((unsigned long)ucp) & (sizeof(unsigned long)-1)) ||
55 (!__access_ok(ucp, sizeof(*ucp))))
56 goto do_sigsegv;
57 grp = &ucp->uc_mcontext.mc_gregs;
58 err = __get_user(pc, &((*grp)[MC_PC]));
59 err |= __get_user(npc, &((*grp)[MC_NPC]));
60 if (err || ((pc | npc) & 3))
61 goto do_sigsegv;
62 if (regs->u_regs[UREG_I1]) {
63 sigset_t set;
64
65 if (_NSIG_WORDS == 1) {
66 if (__get_user(set.sig[0], &ucp->uc_sigmask.sig[0]))
67 goto do_sigsegv;
68 } else {
69 if (__copy_from_user(&set, &ucp->uc_sigmask, sizeof(sigset_t)))
70 goto do_sigsegv;
71 }
72 set_current_blocked(&set);
73 }
74 if (test_thread_flag(TIF_32BIT)) {
75 pc &= 0xffffffff;
76 npc &= 0xffffffff;
77 }
78 regs->tpc = pc;
79 regs->tnpc = npc;
80 err |= __get_user(regs->y, &((*grp)[MC_Y]));
81 err |= __get_user(tstate, &((*grp)[MC_TSTATE]));
82 regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
83 regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
84 err |= __get_user(regs->u_regs[UREG_G1], (&(*grp)[MC_G1]));
85 err |= __get_user(regs->u_regs[UREG_G2], (&(*grp)[MC_G2]));
86 err |= __get_user(regs->u_regs[UREG_G3], (&(*grp)[MC_G3]));
87 err |= __get_user(regs->u_regs[UREG_G4], (&(*grp)[MC_G4]));
88 err |= __get_user(regs->u_regs[UREG_G5], (&(*grp)[MC_G5]));
89 err |= __get_user(regs->u_regs[UREG_G6], (&(*grp)[MC_G6]));
90
91 /* Skip %g7 as that's the thread register in userspace. */
92
93 err |= __get_user(regs->u_regs[UREG_I0], (&(*grp)[MC_O0]));
94 err |= __get_user(regs->u_regs[UREG_I1], (&(*grp)[MC_O1]));
95 err |= __get_user(regs->u_regs[UREG_I2], (&(*grp)[MC_O2]));
96 err |= __get_user(regs->u_regs[UREG_I3], (&(*grp)[MC_O3]));
97 err |= __get_user(regs->u_regs[UREG_I4], (&(*grp)[MC_O4]));
98 err |= __get_user(regs->u_regs[UREG_I5], (&(*grp)[MC_O5]));
99 err |= __get_user(regs->u_regs[UREG_I6], (&(*grp)[MC_O6]));
100 err |= __get_user(regs->u_regs[UREG_I7], (&(*grp)[MC_O7]));
101
102 err |= __get_user(fp, &(ucp->uc_mcontext.mc_fp));
103 err |= __get_user(i7, &(ucp->uc_mcontext.mc_i7));
104 err |= __put_user(fp,
105 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
106 err |= __put_user(i7,
107 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
108
109 err |= __get_user(fenab, &(ucp->uc_mcontext.mc_fpregs.mcfpu_enab));
110 if (fenab) {
111 unsigned long *fpregs = current_thread_info()->fpregs;
112 unsigned long fprs;
113
114 fprs_write(0);
115 err |= __get_user(fprs, &(ucp->uc_mcontext.mc_fpregs.mcfpu_fprs));
116 if (fprs & FPRS_DL)
117 err |= copy_from_user(fpregs,
118 &(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs),
119 (sizeof(unsigned int) * 32));
120 if (fprs & FPRS_DU)
121 err |= copy_from_user(fpregs+16,
122 ((unsigned long __user *)&(ucp->uc_mcontext.mc_fpregs.mcfpu_fregs))+16,
123 (sizeof(unsigned int) * 32));
124 err |= __get_user(current_thread_info()->xfsr[0],
125 &(ucp->uc_mcontext.mc_fpregs.mcfpu_fsr));
126 err |= __get_user(current_thread_info()->gsr[0],
127 &(ucp->uc_mcontext.mc_fpregs.mcfpu_gsr));
128 regs->tstate &= ~TSTATE_PEF;
129 }
130 if (err)
131 goto do_sigsegv;
132
133 return;
134 do_sigsegv:
135 force_sig(SIGSEGV, current);
136 }
137
138 asmlinkage void sparc64_get_context(struct pt_regs *regs)
139 {
140 struct ucontext __user *ucp = (struct ucontext __user *)
141 regs->u_regs[UREG_I0];
142 mc_gregset_t __user *grp;
143 mcontext_t __user *mcp;
144 unsigned long fp, i7;
145 unsigned char fenab;
146 int err;
147
148 synchronize_user_stack();
149 if (get_thread_wsaved() || clear_user(ucp, sizeof(*ucp)))
150 goto do_sigsegv;
151
152 #if 1
153 fenab = 0; /* IMO get_context is like any other system call, thus modifies FPU state -jj */
154 #else
155 fenab = (current_thread_info()->fpsaved[0] & FPRS_FEF);
156 #endif
157
158 mcp = &ucp->uc_mcontext;
159 grp = &mcp->mc_gregs;
160
161 /* Skip over the trap instruction, first. */
162 if (test_thread_flag(TIF_32BIT)) {
163 regs->tpc = (regs->tnpc & 0xffffffff);
164 regs->tnpc = (regs->tnpc + 4) & 0xffffffff;
165 } else {
166 regs->tpc = regs->tnpc;
167 regs->tnpc += 4;
168 }
169 err = 0;
170 if (_NSIG_WORDS == 1)
171 err |= __put_user(current->blocked.sig[0],
172 (unsigned long __user *)&ucp->uc_sigmask);
173 else
174 err |= __copy_to_user(&ucp->uc_sigmask, &current->blocked,
175 sizeof(sigset_t));
176
177 err |= __put_user(regs->tstate, &((*grp)[MC_TSTATE]));
178 err |= __put_user(regs->tpc, &((*grp)[MC_PC]));
179 err |= __put_user(regs->tnpc, &((*grp)[MC_NPC]));
180 err |= __put_user(regs->y, &((*grp)[MC_Y]));
181 err |= __put_user(regs->u_regs[UREG_G1], &((*grp)[MC_G1]));
182 err |= __put_user(regs->u_regs[UREG_G2], &((*grp)[MC_G2]));
183 err |= __put_user(regs->u_regs[UREG_G3], &((*grp)[MC_G3]));
184 err |= __put_user(regs->u_regs[UREG_G4], &((*grp)[MC_G4]));
185 err |= __put_user(regs->u_regs[UREG_G5], &((*grp)[MC_G5]));
186 err |= __put_user(regs->u_regs[UREG_G6], &((*grp)[MC_G6]));
187 err |= __put_user(regs->u_regs[UREG_G7], &((*grp)[MC_G7]));
188 err |= __put_user(regs->u_regs[UREG_I0], &((*grp)[MC_O0]));
189 err |= __put_user(regs->u_regs[UREG_I1], &((*grp)[MC_O1]));
190 err |= __put_user(regs->u_regs[UREG_I2], &((*grp)[MC_O2]));
191 err |= __put_user(regs->u_regs[UREG_I3], &((*grp)[MC_O3]));
192 err |= __put_user(regs->u_regs[UREG_I4], &((*grp)[MC_O4]));
193 err |= __put_user(regs->u_regs[UREG_I5], &((*grp)[MC_O5]));
194 err |= __put_user(regs->u_regs[UREG_I6], &((*grp)[MC_O6]));
195 err |= __put_user(regs->u_regs[UREG_I7], &((*grp)[MC_O7]));
196
197 err |= __get_user(fp,
198 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[6])));
199 err |= __get_user(i7,
200 (&(((struct reg_window __user *)(STACK_BIAS+regs->u_regs[UREG_I6]))->ins[7])));
201 err |= __put_user(fp, &(mcp->mc_fp));
202 err |= __put_user(i7, &(mcp->mc_i7));
203
204 err |= __put_user(fenab, &(mcp->mc_fpregs.mcfpu_enab));
205 if (fenab) {
206 unsigned long *fpregs = current_thread_info()->fpregs;
207 unsigned long fprs;
208
209 fprs = current_thread_info()->fpsaved[0];
210 if (fprs & FPRS_DL)
211 err |= copy_to_user(&(mcp->mc_fpregs.mcfpu_fregs), fpregs,
212 (sizeof(unsigned int) * 32));
213 if (fprs & FPRS_DU)
214 err |= copy_to_user(
215 ((unsigned long __user *)&(mcp->mc_fpregs.mcfpu_fregs))+16, fpregs+16,
216 (sizeof(unsigned int) * 32));
217 err |= __put_user(current_thread_info()->xfsr[0], &(mcp->mc_fpregs.mcfpu_fsr));
218 err |= __put_user(current_thread_info()->gsr[0], &(mcp->mc_fpregs.mcfpu_gsr));
219 err |= __put_user(fprs, &(mcp->mc_fpregs.mcfpu_fprs));
220 }
221 if (err)
222 goto do_sigsegv;
223
224 return;
225 do_sigsegv:
226 force_sig(SIGSEGV, current);
227 }
228
229 struct rt_signal_frame {
230 struct sparc_stackf ss;
231 siginfo_t info;
232 struct pt_regs regs;
233 __siginfo_fpu_t __user *fpu_save;
234 stack_t stack;
235 sigset_t mask;
236 __siginfo_rwin_t *rwin_save;
237 };
238
239 void do_rt_sigreturn(struct pt_regs *regs)
240 {
241 struct rt_signal_frame __user *sf;
242 unsigned long tpc, tnpc, tstate;
243 __siginfo_fpu_t __user *fpu_save;
244 __siginfo_rwin_t __user *rwin_save;
245 sigset_t set;
246 int err;
247
248 /* Always make any pending restarted system calls return -EINTR */
249 current_thread_info()->restart_block.fn = do_no_restart_syscall;
250
251 synchronize_user_stack ();
252 sf = (struct rt_signal_frame __user *)
253 (regs->u_regs [UREG_FP] + STACK_BIAS);
254
255 /* 1. Make sure we are not getting garbage from the user */
256 if (((unsigned long) sf) & 3)
257 goto segv;
258
259 err = get_user(tpc, &sf->regs.tpc);
260 err |= __get_user(tnpc, &sf->regs.tnpc);
261 if (test_thread_flag(TIF_32BIT)) {
262 tpc &= 0xffffffff;
263 tnpc &= 0xffffffff;
264 }
265 err |= ((tpc | tnpc) & 3);
266
267 /* 2. Restore the state */
268 err |= __get_user(regs->y, &sf->regs.y);
269 err |= __get_user(tstate, &sf->regs.tstate);
270 err |= copy_from_user(regs->u_regs, sf->regs.u_regs, sizeof(regs->u_regs));
271
272 /* User can only change condition codes and %asi in %tstate. */
273 regs->tstate &= ~(TSTATE_ASI | TSTATE_ICC | TSTATE_XCC);
274 regs->tstate |= (tstate & (TSTATE_ASI | TSTATE_ICC | TSTATE_XCC));
275
276 err |= __get_user(fpu_save, &sf->fpu_save);
277 if (!err && fpu_save)
278 err |= restore_fpu_state(regs, fpu_save);
279
280 err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t));
281 err |= restore_altstack(&sf->stack);
282 if (err)
283 goto segv;
284
285 err |= __get_user(rwin_save, &sf->rwin_save);
286 if (!err && rwin_save) {
287 if (restore_rwin_state(rwin_save))
288 goto segv;
289 }
290
291 regs->tpc = tpc;
292 regs->tnpc = tnpc;
293
294 /* Prevent syscall restart. */
295 pt_regs_clear_syscall(regs);
296
297 set_current_blocked(&set);
298 return;
299 segv:
300 force_sig(SIGSEGV, current);
301 }
302
303 /* Checks if the fp is valid */
304 static int invalid_frame_pointer(void __user *fp)
305 {
306 if (((unsigned long) fp) & 15)
307 return 1;
308 return 0;
309 }
310
311 static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, unsigned long framesize)
312 {
313 unsigned long sp = regs->u_regs[UREG_FP] + STACK_BIAS;
314
315 /*
316 * If we are on the alternate signal stack and would overflow it, don't.
317 * Return an always-bogus address instead so we will die with SIGSEGV.
318 */
319 if (on_sig_stack(sp) && !likely(on_sig_stack(sp - framesize)))
320 return (void __user *) -1L;
321
322 /* This is the X/Open sanctioned signal stack switching. */
323 if (ka->sa.sa_flags & SA_ONSTACK) {
324 if (sas_ss_flags(sp) == 0)
325 sp = current->sas_ss_sp + current->sas_ss_size;
326 }
327
328 sp -= framesize;
329
330 /* Always align the stack frame. This handles two cases. First,
331 * sigaltstack need not be mindful of platform specific stack
332 * alignment. Second, if we took this signal because the stack
333 * is not aligned properly, we'd like to take the signal cleanly
334 * and report that.
335 */
336 sp &= ~15UL;
337
338 return (void __user *) sp;
339 }
340
341 static inline int
342 setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
343 int signo, sigset_t *oldset, siginfo_t *info)
344 {
345 struct rt_signal_frame __user *sf;
346 int wsaved, err, sf_size;
347 void __user *tail;
348
349 /* 1. Make sure everything is clean */
350 synchronize_user_stack();
351 save_and_clear_fpu();
352
353 wsaved = get_thread_wsaved();
354
355 sf_size = sizeof(struct rt_signal_frame);
356 if (current_thread_info()->fpsaved[0] & FPRS_FEF)
357 sf_size += sizeof(__siginfo_fpu_t);
358 if (wsaved)
359 sf_size += sizeof(__siginfo_rwin_t);
360 sf = (struct rt_signal_frame __user *)
361 get_sigframe(ka, regs, sf_size);
362
363 if (invalid_frame_pointer (sf))
364 goto sigill;
365
366 tail = (sf + 1);
367
368 /* 2. Save the current process state */
369 err = copy_to_user(&sf->regs, regs, sizeof (*regs));
370
371 if (current_thread_info()->fpsaved[0] & FPRS_FEF) {
372 __siginfo_fpu_t __user *fpu_save = tail;
373 tail += sizeof(__siginfo_fpu_t);
374 err |= save_fpu_state(regs, fpu_save);
375 err |= __put_user((u64)fpu_save, &sf->fpu_save);
376 } else {
377 err |= __put_user(0, &sf->fpu_save);
378 }
379 if (wsaved) {
380 __siginfo_rwin_t __user *rwin_save = tail;
381 tail += sizeof(__siginfo_rwin_t);
382 err |= save_rwin_state(wsaved, rwin_save);
383 err |= __put_user((u64)rwin_save, &sf->rwin_save);
384 set_thread_wsaved(0);
385 } else {
386 err |= __put_user(0, &sf->rwin_save);
387 }
388
389 /* Setup sigaltstack */
390 err |= __save_altstack(&sf->stack, regs->u_regs[UREG_FP]);
391
392 err |= copy_to_user(&sf->mask, oldset, sizeof(sigset_t));
393
394 if (!wsaved) {
395 err |= copy_in_user((u64 __user *)sf,
396 (u64 __user *)(regs->u_regs[UREG_FP] +
397 STACK_BIAS),
398 sizeof(struct reg_window));
399 } else {
400 struct reg_window *rp;
401
402 rp = &current_thread_info()->reg_window[wsaved - 1];
403 err |= copy_to_user(sf, rp, sizeof(struct reg_window));
404 }
405 if (info)
406 err |= copy_siginfo_to_user(&sf->info, info);
407 else {
408 err |= __put_user(signo, &sf->info.si_signo);
409 err |= __put_user(SI_NOINFO, &sf->info.si_code);
410 }
411 if (err)
412 goto sigsegv;
413
414 /* 3. signal handler back-trampoline and parameters */
415 regs->u_regs[UREG_FP] = ((unsigned long) sf) - STACK_BIAS;
416 regs->u_regs[UREG_I0] = signo;
417 regs->u_regs[UREG_I1] = (unsigned long) &sf->info;
418
419 /* The sigcontext is passed in this way because of how it
420 * is defined in GLIBC's /usr/include/bits/sigcontext.h
421 * for sparc64. It includes the 128 bytes of siginfo_t.
422 */
423 regs->u_regs[UREG_I2] = (unsigned long) &sf->info;
424
425 /* 5. signal handler */
426 regs->tpc = (unsigned long) ka->sa.sa_handler;
427 regs->tnpc = (regs->tpc + 4);
428 if (test_thread_flag(TIF_32BIT)) {
429 regs->tpc &= 0xffffffff;
430 regs->tnpc &= 0xffffffff;
431 }
432 /* 4. return to kernel instructions */
433 regs->u_regs[UREG_I7] = (unsigned long)ka->ka_restorer;
434 return 0;
435
436 sigill:
437 do_exit(SIGILL);
438 return -EINVAL;
439
440 sigsegv:
441 force_sigsegv(signo, current);
442 return -EFAULT;
443 }
444
445 static inline void handle_signal(unsigned long signr, struct k_sigaction *ka,
446 siginfo_t *info,
447 sigset_t *oldset, struct pt_regs *regs)
448 {
449 int err;
450
451 err = setup_rt_frame(ka, regs, signr, oldset,
452 (ka->sa.sa_flags & SA_SIGINFO) ? info : NULL);
453 if (err)
454 return;
455
456 signal_delivered(signr, info, ka, regs, 0);
457 }
458
459 static inline void syscall_restart(unsigned long orig_i0, struct pt_regs *regs,
460 struct sigaction *sa)
461 {
462 switch (regs->u_regs[UREG_I0]) {
463 case ERESTART_RESTARTBLOCK:
464 case ERESTARTNOHAND:
465 no_system_call_restart:
466 regs->u_regs[UREG_I0] = EINTR;
467 regs->tstate |= (TSTATE_ICARRY|TSTATE_XCARRY);
468 break;
469 case ERESTARTSYS:
470 if (!(sa->sa_flags & SA_RESTART))
471 goto no_system_call_restart;
472 /* fallthrough */
473 case ERESTARTNOINTR:
474 regs->u_regs[UREG_I0] = orig_i0;
475 regs->tpc -= 4;
476 regs->tnpc -= 4;
477 }
478 }
479
480 /* Note that 'init' is a special process: it doesn't get signals it doesn't
481 * want to handle. Thus you cannot kill init even with a SIGKILL even by
482 * mistake.
483 */
484 static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
485 {
486 struct k_sigaction ka;
487 int restart_syscall;
488 sigset_t *oldset = sigmask_to_save();
489 siginfo_t info;
490 int signr;
491
492 /* It's a lot of work and synchronization to add a new ptrace
493 * register for GDB to save and restore in order to get
494 * orig_i0 correct for syscall restarts when debugging.
495 *
496 * Although it should be the case that most of the global
497 * registers are volatile across a system call, glibc already
498 * depends upon that fact that we preserve them. So we can't
499 * just use any global register to save away the orig_i0 value.
500 *
501 * In particular %g2, %g3, %g4, and %g5 are all assumed to be
502 * preserved across a system call trap by various pieces of
503 * code in glibc.
504 *
505 * %g7 is used as the "thread register". %g6 is not used in
506 * any fixed manner. %g6 is used as a scratch register and
507 * a compiler temporary, but it's value is never used across
508 * a system call. Therefore %g6 is usable for orig_i0 storage.
509 */
510 if (pt_regs_is_syscall(regs) &&
511 (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)))
512 regs->u_regs[UREG_G6] = orig_i0;
513
514 #ifdef CONFIG_COMPAT
515 if (test_thread_flag(TIF_32BIT)) {
516 extern void do_signal32(sigset_t *, struct pt_regs *);
517 do_signal32(oldset, regs);
518 return;
519 }
520 #endif
521
522 signr = get_signal_to_deliver(&info, &ka, regs, NULL);
523
524 restart_syscall = 0;
525 if (pt_regs_is_syscall(regs) &&
526 (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) {
527 restart_syscall = 1;
528 orig_i0 = regs->u_regs[UREG_G6];
529 }
530
531 if (signr > 0) {
532 if (restart_syscall)
533 syscall_restart(orig_i0, regs, &ka.sa);
534 handle_signal(signr, &ka, &info, oldset, regs);
535 return;
536 }
537 if (restart_syscall &&
538 (regs->u_regs[UREG_I0] == ERESTARTNOHAND ||
539 regs->u_regs[UREG_I0] == ERESTARTSYS ||
540 regs->u_regs[UREG_I0] == ERESTARTNOINTR)) {
541 /* replay the system call when we are done */
542 regs->u_regs[UREG_I0] = orig_i0;
543 regs->tpc -= 4;
544 regs->tnpc -= 4;
545 pt_regs_clear_syscall(regs);
546 }
547 if (restart_syscall &&
548 regs->u_regs[UREG_I0] == ERESTART_RESTARTBLOCK) {
549 regs->u_regs[UREG_G1] = __NR_restart_syscall;
550 regs->tpc -= 4;
551 regs->tnpc -= 4;
552 pt_regs_clear_syscall(regs);
553 }
554
555 /* If there's no signal to deliver, we just put the saved sigmask
556 * back
557 */
558 restore_saved_sigmask();
559 }
560
561 void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
562 {
563 if (thread_info_flags & _TIF_SIGPENDING)
564 do_signal(regs, orig_i0);
565 if (thread_info_flags & _TIF_NOTIFY_RESUME) {
566 clear_thread_flag(TIF_NOTIFY_RESUME);
567 tracehook_notify_resume(regs);
568 }
569 }
570
Linux kernel - Deliverables
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