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Diffstat (limited to 'arch/ia64/kernel/signal.c')
-rw-r--r--arch/ia64/kernel/signal.c54
1 files changed, 14 insertions, 40 deletions
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index e1821ca4c7df..7bdafc8788bd 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -21,7 +21,6 @@
21#include <linux/unistd.h> 21#include <linux/unistd.h>
22#include <linux/wait.h> 22#include <linux/wait.h>
23 23
24#include <asm/ia32.h>
25#include <asm/intrinsics.h> 24#include <asm/intrinsics.h>
26#include <asm/uaccess.h> 25#include <asm/uaccess.h>
27#include <asm/rse.h> 26#include <asm/rse.h>
@@ -425,14 +424,8 @@ static long
425handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *oldset, 424handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *oldset,
426 struct sigscratch *scr) 425 struct sigscratch *scr)
427{ 426{
428 if (IS_IA32_PROCESS(&scr->pt)) { 427 if (!setup_frame(sig, ka, info, oldset, scr))
429 /* send signal to IA-32 process */ 428 return 0;
430 if (!ia32_setup_frame1(sig, ka, info, oldset, &scr->pt))
431 return 0;
432 } else
433 /* send signal to IA-64 process */
434 if (!setup_frame(sig, ka, info, oldset, scr))
435 return 0;
436 429
437 spin_lock_irq(&current->sighand->siglock); 430 spin_lock_irq(&current->sighand->siglock);
438 sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask); 431 sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
@@ -462,7 +455,6 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
462 siginfo_t info; 455 siginfo_t info;
463 long restart = in_syscall; 456 long restart = in_syscall;
464 long errno = scr->pt.r8; 457 long errno = scr->pt.r8;
465# define ERR_CODE(c) (IS_IA32_PROCESS(&scr->pt) ? -(c) : (c))
466 458
467 /* 459 /*
468 * In the ia64_leave_kernel code path, we want the common case to go fast, which 460 * In the ia64_leave_kernel code path, we want the common case to go fast, which
@@ -490,14 +482,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
490 * inferior call), thus it's important to check for restarting _after_ 482 * inferior call), thus it's important to check for restarting _after_
491 * get_signal_to_deliver(). 483 * get_signal_to_deliver().
492 */ 484 */
493 if (IS_IA32_PROCESS(&scr->pt)) { 485 if ((long) scr->pt.r10 != -1)
494 if (in_syscall) {
495 if (errno >= 0)
496 restart = 0;
497 else
498 errno = -errno;
499 }
500 } else if ((long) scr->pt.r10 != -1)
501 /* 486 /*
502 * A system calls has to be restarted only if one of the error codes 487 * A system calls has to be restarted only if one of the error codes
503 * ERESTARTNOHAND, ERESTARTSYS, or ERESTARTNOINTR is returned. If r10 488 * ERESTARTNOHAND, ERESTARTSYS, or ERESTARTNOINTR is returned. If r10
@@ -513,22 +498,18 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
513 switch (errno) { 498 switch (errno) {
514 case ERESTART_RESTARTBLOCK: 499 case ERESTART_RESTARTBLOCK:
515 case ERESTARTNOHAND: 500 case ERESTARTNOHAND:
516 scr->pt.r8 = ERR_CODE(EINTR); 501 scr->pt.r8 = EINTR;
517 /* note: scr->pt.r10 is already -1 */ 502 /* note: scr->pt.r10 is already -1 */
518 break; 503 break;
519 504
520 case ERESTARTSYS: 505 case ERESTARTSYS:
521 if ((ka.sa.sa_flags & SA_RESTART) == 0) { 506 if ((ka.sa.sa_flags & SA_RESTART) == 0) {
522 scr->pt.r8 = ERR_CODE(EINTR); 507 scr->pt.r8 = EINTR;
523 /* note: scr->pt.r10 is already -1 */ 508 /* note: scr->pt.r10 is already -1 */
524 break; 509 break;
525 } 510 }
526 case ERESTARTNOINTR: 511 case ERESTARTNOINTR:
527 if (IS_IA32_PROCESS(&scr->pt)) { 512 ia64_decrement_ip(&scr->pt);
528 scr->pt.r8 = scr->pt.r1;
529 scr->pt.cr_iip -= 2;
530 } else
531 ia64_decrement_ip(&scr->pt);
532 restart = 0; /* don't restart twice if handle_signal() fails... */ 513 restart = 0; /* don't restart twice if handle_signal() fails... */
533 } 514 }
534 } 515 }
@@ -555,21 +536,14 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
555 if (errno == ERESTARTNOHAND || errno == ERESTARTSYS || errno == ERESTARTNOINTR 536 if (errno == ERESTARTNOHAND || errno == ERESTARTSYS || errno == ERESTARTNOINTR
556 || errno == ERESTART_RESTARTBLOCK) 537 || errno == ERESTART_RESTARTBLOCK)
557 { 538 {
558 if (IS_IA32_PROCESS(&scr->pt)) { 539 /*
559 scr->pt.r8 = scr->pt.r1; 540 * Note: the syscall number is in r15 which is saved in
560 scr->pt.cr_iip -= 2; 541 * pt_regs so all we need to do here is adjust ip so that
561 if (errno == ERESTART_RESTARTBLOCK) 542 * the "break" instruction gets re-executed.
562 scr->pt.r8 = 0; /* x86 version of __NR_restart_syscall */ 543 */
563 } else { 544 ia64_decrement_ip(&scr->pt);
564 /* 545 if (errno == ERESTART_RESTARTBLOCK)
565 * Note: the syscall number is in r15 which is saved in 546 scr->pt.r15 = __NR_restart_syscall;
566 * pt_regs so all we need to do here is adjust ip so that
567 * the "break" instruction gets re-executed.
568 */
569 ia64_decrement_ip(&scr->pt);
570 if (errno == ERESTART_RESTARTBLOCK)
571 scr->pt.r15 = __NR_restart_syscall;
572 }
573 } 547 }
574 } 548 }
575 549