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-rw-r--r--arch/parisc/kernel/entry.S141
-rw-r--r--arch/parisc/kernel/signal.c72
-rw-r--r--arch/parisc/kernel/syscall_table.S6
3 files changed, 83 insertions, 136 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 39a12c1fc6f..f965673e686 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -978,11 +978,39 @@ intr_check_resched:
LDREG TI_FLAGS(%r1),%r19 /* sched.h: TIF_NEED_RESCHED */
bb,<,n %r19,31-TIF_NEED_RESCHED,intr_do_resched /* forward */
+ .import do_notify_resume,code
intr_check_sig:
/* As above */
mfctl %cr30,%r1
- LDREG TI_FLAGS(%r1),%r19 /* sched.h: TIF_SIGPENDING */
- bb,<,n %r19, 31-TIF_SIGPENDING, intr_do_signal /* forward */
+ LDREG TI_FLAGS(%r1),%r19
+ load32 (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r20
+ and,COND(<>) %r19, %r20, %r0
+ b,n intr_restore /* skip past if we've nothing to do */
+
+ /* This check is critical to having LWS
+ * working. The IASQ is zero on the gateway
+ * page and we cannot deliver any signals until
+ * we get off the gateway page.
+ *
+ * Only do signals if we are returning to user space
+ */
+ LDREG PT_IASQ0(%r16), %r20
+ CMPIB= 0,%r20,intr_restore /* backward */
+ nop
+ LDREG PT_IASQ1(%r16), %r20
+ CMPIB= 0,%r20,intr_restore /* backward */
+ nop
+
+ copy %r0, %r25 /* long in_syscall = 0 */
+#ifdef CONFIG_64BIT
+ ldo -16(%r30),%r29 /* Reference param save area */
+#endif
+
+ BL do_notify_resume,%r2
+ copy %r16, %r26 /* struct pt_regs *regs */
+
+ b intr_check_sig
+ nop
intr_restore:
copy %r16,%r29
@@ -1072,35 +1100,6 @@ intr_do_preempt:
b,n intr_restore /* ssm PSW_SM_I done by intr_restore */
#endif /* CONFIG_PREEMPT */
- .import do_signal,code
-intr_do_signal:
- /*
- This check is critical to having LWS
- working. The IASQ is zero on the gateway
- page and we cannot deliver any signals until
- we get off the gateway page.
-
- Only do signals if we are returning to user space
- */
- LDREG PT_IASQ0(%r16), %r20
- CMPIB= 0,%r20,intr_restore /* backward */
- nop
- LDREG PT_IASQ1(%r16), %r20
- CMPIB= 0,%r20,intr_restore /* backward */
- nop
-
- copy %r0, %r24 /* unsigned long in_syscall */
- copy %r16, %r25 /* struct pt_regs *regs */
-#ifdef CONFIG_64BIT
- ldo -16(%r30),%r29 /* Reference param save area */
-#endif
-
- BL do_signal,%r2
- copy %r0, %r26 /* sigset_t *oldset = NULL */
-
- b intr_check_sig
- nop
-
/*
* External interrupts.
*/
@@ -2024,32 +2023,6 @@ sys32_sigaltstack_wrapper:
nop
#endif
- .export sys_rt_sigsuspend_wrapper
-sys_rt_sigsuspend_wrapper:
- LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
- ldo TASK_REGS(%r1),%r24
- reg_save %r24
-
- STREG %r2, -RP_OFFSET(%r30)
-#ifdef CONFIG_64BIT
- ldo FRAME_SIZE(%r30), %r30
- BL sys_rt_sigsuspend,%r2
- ldo -16(%r30),%r29 /* Reference param save area */
-#else
- BL sys_rt_sigsuspend,%r2
- ldo FRAME_SIZE(%r30), %r30
-#endif
-
- ldo -FRAME_SIZE(%r30), %r30
- LDREG -RP_OFFSET(%r30), %r2
-
- LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
- ldo TASK_REGS(%r1),%r1
- reg_restore %r1
-
- bv %r0(%r2)
- nop
-
.export syscall_exit
syscall_exit:
@@ -2115,9 +2088,35 @@ syscall_check_resched:
LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19 /* long */
bb,<,n %r19, 31-TIF_NEED_RESCHED, syscall_do_resched /* forward */
+ .import do_signal,code
syscall_check_sig:
- LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19 /* get ti flags */
- bb,<,n %r19, 31-TIF_SIGPENDING, syscall_do_signal /* forward */
+ LDREG TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19
+ load32 (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r26
+ and,COND(<>) %r19, %r26, %r0
+ b,n syscall_restore /* skip past if we've nothing to do */
+
+syscall_do_signal:
+ /* Save callee-save registers (for sigcontext).
+ * FIXME: After this point the process structure should be
+ * consistent with all the relevant state of the process
+ * before the syscall. We need to verify this.
+ */
+ LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
+ ldo TASK_REGS(%r1), %r26 /* struct pt_regs *regs */
+ reg_save %r26
+
+#ifdef CONFIG_64BIT
+ ldo -16(%r30),%r29 /* Reference param save area */
+#endif
+
+ BL do_notify_resume,%r2
+ ldi 1, %r25 /* long in_syscall = 1 */
+
+ LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
+ ldo TASK_REGS(%r1), %r20 /* reload pt_regs */
+ reg_restore %r20
+
+ b,n syscall_check_sig
syscall_restore:
/* Are we being ptraced? */
@@ -2256,30 +2255,6 @@ syscall_do_resched:
b syscall_check_bh /* if resched, we start over again */
nop
- .import do_signal,code
-syscall_do_signal:
- /* Save callee-save registers (for sigcontext).
- FIXME: After this point the process structure should be
- consistent with all the relevant state of the process
- before the syscall. We need to verify this. */
- LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
- ldo TASK_REGS(%r1), %r25 /* struct pt_regs *regs */
- reg_save %r25
-
- ldi 1, %r24 /* unsigned long in_syscall */
-
-#ifdef CONFIG_64BIT
- ldo -16(%r30),%r29 /* Reference param save area */
-#endif
- BL do_signal,%r2
- copy %r0, %r26 /* sigset_t *oldset = NULL */
-
- LDREG TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1
- ldo TASK_REGS(%r1), %r20 /* reload pt_regs */
- reg_restore %r20
-
- b,n syscall_check_sig
-
/*
* get_register is used by the non access tlb miss handlers to
* copy the value of the general register specified in r8 into
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index ee6653edeb7..8d781b0e668 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -59,8 +59,6 @@
* this. */
#define A(__x) ((unsigned long)(__x))
-int do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall);
-
/*
* Atomically swap in the new signal mask, and wait for a signal.
*/
@@ -68,49 +66,6 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall);
#include "sys32.h"
#endif
-asmlinkage int
-sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *regs)
-{
- sigset_t saveset, newset;
-#ifdef __LP64__
- compat_sigset_t newset32;
-
- if (is_compat_task()) {
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (copy_from_user(&newset32, (compat_sigset_t __user *)unewset, sizeof(newset32)))
- return -EFAULT;
- sigset_32to64(&newset,&newset32);
-
- } else
-#endif
- {
- /* XXX: Don't preclude handling different sized sigset_t's. */
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
-
- if (copy_from_user(&newset, unewset, sizeof(newset)))
- return -EFAULT;
- }
-
- sigdelsetmask(&newset, ~_BLOCKABLE);
-
- spin_lock_irq(&current->sighand->siglock);
- saveset = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- regs->gr[28] = -EINTR;
- while (1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- if (do_signal(&saveset, regs, 1))
- return -EINTR;
- }
-}
-
/*
* Do a signal return - restore sigcontext.
*/
@@ -528,12 +483,13 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
* us due to the magic of delayed branching.
*/
-asmlinkage int
-do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
+asmlinkage void
+do_signal(struct pt_regs *regs, long in_syscall)
{
siginfo_t info;
struct k_sigaction ka;
int signr;
+ sigset_t *oldset;
DBG(1,"\ndo_signal: oldset=0x%p, regs=0x%p, sr7 %#lx, in_syscall=%d\n",
oldset, regs, regs->sr[7], in_syscall);
@@ -543,7 +499,9 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
we would be called in that case, but for some reason we
are. */
- if (!oldset)
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ oldset = &current->saved_sigmask;
+ else
oldset = &current->blocked;
DBG(1,"do_signal: oldset %08lx / %08lx\n",
@@ -592,7 +550,9 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
if (handle_signal(signr, &info, &ka, oldset, regs, in_syscall)) {
DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n",
regs->gr[28]);
- return 1;
+ if (test_thread_flag(TIF_RESTORE_SIGMASK))
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+ return;
}
}
/* end of while(1) looping forever if we can't force a signal */
@@ -653,5 +613,17 @@ do_signal(sigset_t *oldset, struct pt_regs *regs, int in_syscall)
DBG(1,"do_signal: Exit (not delivered), regs->gr[28] = %ld\n",
regs->gr[28]);
- return 0;
+ if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
+ sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+ }
+
+ return;
+}
+
+void do_notify_resume(struct pt_regs *regs, long in_syscall)
+{
+ if (test_thread_flag(TIF_SIGPENDING) ||
+ test_thread_flag(TIF_RESTORE_SIGMASK))
+ do_signal(regs, in_syscall);
}
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index 15d9c635d6a..7f037b72ad0 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -283,7 +283,7 @@
* struct from a 32-bit user-space app.
*/
ENTRY_SAME(rt_sigqueueinfo)
- ENTRY_SAME(rt_sigsuspend_wrapper) /* not really SAME -- see the code */
+ ENTRY_COMP(rt_sigsuspend)
ENTRY_SAME(chown) /* 180 */
/* setsockopt() used by iptables: SO_SET_REPLACE/SO_SET_ADD_COUNTERS */
ENTRY_COMP(setsockopt)
@@ -377,8 +377,8 @@
ENTRY_SAME(inotify_init)
ENTRY_SAME(inotify_add_watch) /* 270 */
ENTRY_SAME(inotify_rm_watch)
- ENTRY_SAME(ni_syscall) /* 271 ENTRY_COMP(pselect6) */
- ENTRY_SAME(ni_syscall) /* 272 ENTRY_COMP(ppoll) */
+ ENTRY_COMP(pselect6)
+ ENTRY_COMP(ppoll)
ENTRY_SAME(migrate_pages)
ENTRY_COMP(openat) /* 275 */
ENTRY_SAME(mkdirat)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 05:25:35 +0000