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@@ -7,6 +7,7 @@
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#include <asm/processor.h>
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#include <asm/types.h>
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#include <asm/hwrpb.h>
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+#include <asm/sysinfo.h>
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#endif
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#ifndef __ASSEMBLY__
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@@ -21,6 +22,7 @@ struct thread_info {
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mm_segment_t addr_limit; /* thread address space */
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unsigned cpu; /* current CPU */
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int preempt_count; /* 0 => preemptable, <0 => BUG */
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+ unsigned int status; /* thread-synchronous flags */
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int bpt_nsaved;
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unsigned long bpt_addr[2]; /* breakpoint handling */
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@@ -63,8 +65,6 @@ register struct thread_info *__current_thread_info __asm__("$8");
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* - these are process state flags and used from assembly
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* - pending work-to-be-done flags come first and must be assigned to be
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* within bits 0 to 7 to fit in and immediate operand.
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- * - ALPHA_UAC_SHIFT below must be kept consistent with the unaligned
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- * control flags.
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*
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* TIF_SYSCALL_TRACE is known to be 0 via blbs.
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*/
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@@ -72,18 +72,12 @@ register struct thread_info *__current_thread_info __asm__("$8");
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#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
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#define TIF_SIGPENDING 2 /* signal pending */
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#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
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-#define TIF_POLLING_NRFLAG 8 /* poll_idle is polling NEED_RESCHED */
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#define TIF_DIE_IF_KERNEL 9 /* dik recursion lock */
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-#define TIF_UAC_NOPRINT 10 /* ! Preserve sequence of following */
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-#define TIF_UAC_NOFIX 11 /* ! flags as they match */
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-#define TIF_UAC_SIGBUS 12 /* ! userspace part of 'osf_sysinfo' */
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#define TIF_MEMDIE 13 /* is terminating due to OOM killer */
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-#define TIF_RESTORE_SIGMASK 14 /* restore signal mask in do_signal */
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#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
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#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
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#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
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-#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
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#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
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/* Work to do on interrupt/exception return. */
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@@ -94,29 +88,63 @@ register struct thread_info *__current_thread_info __asm__("$8");
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#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK \
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| _TIF_SYSCALL_TRACE)
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-#define ALPHA_UAC_SHIFT TIF_UAC_NOPRINT
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-#define ALPHA_UAC_MASK (1 << TIF_UAC_NOPRINT | 1 << TIF_UAC_NOFIX | \
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- 1 << TIF_UAC_SIGBUS)
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+#define TS_UAC_NOPRINT 0x0001 /* ! Preserve the following three */
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+#define TS_UAC_NOFIX 0x0002 /* ! flags as they match */
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+#define TS_UAC_SIGBUS 0x0004 /* ! userspace part of 'osf_sysinfo' */
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+#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */
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+#define TS_POLLING 0x0010 /* idle task polling need_resched,
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+ skip sending interrupt */
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-#define SET_UNALIGN_CTL(task,value) ({ \
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- task_thread_info(task)->flags = ((task_thread_info(task)->flags & \
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- ~ALPHA_UAC_MASK) \
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- | (((value) << ALPHA_UAC_SHIFT) & (1<<TIF_UAC_NOPRINT))\
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- | (((value) << (ALPHA_UAC_SHIFT + 1)) & (1<<TIF_UAC_SIGBUS)) \
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- | (((value) << (ALPHA_UAC_SHIFT - 1)) & (1<<TIF_UAC_NOFIX)));\
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+#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
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+
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+#ifndef __ASSEMBLY__
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+#define HAVE_SET_RESTORE_SIGMASK 1
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+static inline void set_restore_sigmask(void)
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+{
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+ struct thread_info *ti = current_thread_info();
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+ ti->status |= TS_RESTORE_SIGMASK;
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+ WARN_ON(!test_bit(TIF_SIGPENDING, (unsigned long *)&ti->flags));
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+}
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+static inline void clear_restore_sigmask(void)
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+{
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+ current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
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+}
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+static inline bool test_restore_sigmask(void)
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+{
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+ return current_thread_info()->status & TS_RESTORE_SIGMASK;
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+}
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+static inline bool test_and_clear_restore_sigmask(void)
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+{
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+ struct thread_info *ti = current_thread_info();
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+ if (!(ti->status & TS_RESTORE_SIGMASK))
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+ return false;
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+ ti->status &= ~TS_RESTORE_SIGMASK;
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+ return true;
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+}
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+#endif
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+
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+#define SET_UNALIGN_CTL(task,value) ({ \
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+ __u32 status = task_thread_info(task)->status & ~UAC_BITMASK; \
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+ if (value & PR_UNALIGN_NOPRINT) \
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+ status |= TS_UAC_NOPRINT; \
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+ if (value & PR_UNALIGN_SIGBUS) \
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+ status |= TS_UAC_SIGBUS; \
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+ if (value & 4) /* alpha-specific */ \
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+ status |= TS_UAC_NOFIX; \
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+ task_thread_info(task)->status = status; \
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0; })
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#define GET_UNALIGN_CTL(task,value) ({ \
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- put_user((task_thread_info(task)->flags & (1 << TIF_UAC_NOPRINT))\
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- >> ALPHA_UAC_SHIFT \
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- | (task_thread_info(task)->flags & (1 << TIF_UAC_SIGBUS))\
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- >> (ALPHA_UAC_SHIFT + 1) \
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- | (task_thread_info(task)->flags & (1 << TIF_UAC_NOFIX))\
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- >> (ALPHA_UAC_SHIFT - 1), \
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- (int __user *)(value)); \
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+ __u32 status = task_thread_info(task)->status & ~UAC_BITMASK; \
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+ __u32 res = 0; \
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+ if (status & TS_UAC_NOPRINT) \
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+ res |= PR_UNALIGN_NOPRINT; \
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+ if (status & TS_UAC_SIGBUS) \
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+ res |= PR_UNALIGN_SIGBUS; \
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+ if (status & TS_UAC_NOFIX) \
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+ res |= 4; \
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+ put_user(res, (int __user *)(value)); \
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})
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-#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
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-
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#endif /* __KERNEL__ */
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#endif /* _ALPHA_THREAD_INFO_H */
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