Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sparc / include / asm / thread_info_32.h

diff --git a/kernel/arch/sparc/include/asm/thread_info_32.h b/kernel/arch/sparc/include/asm/thread_info_32.h
new file mode 100644 (file)
index 0000000..229475f
--- /dev/null
+++ b/kernel/arch/sparc/include/asm/thread_info_32.h
@@ -0,0 +1,130 @@
+/*
+ * thread_info.h: sparc low-level thread information
+ * adapted from the ppc version by Pete Zaitcev, which was
+ * adapted from the i386 version by Paul Mackerras
+ *
+ * Copyright (C) 2002  David Howells (dhowells@redhat.com)
+ * Copyright (c) 2002  Pete Zaitcev (zaitcev@yahoo.com)
+ * - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ */
+
+#ifndef _ASM_THREAD_INFO_H
+#define _ASM_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+#include <asm/ptrace.h>
+#include <asm/page.h>
+
+/*
+ * Low level task data.
+ *
+ * If you change this, change the TI_* offsets below to match.
+ */
+#define NSWINS 8
+struct thread_info {
+       unsigned long           uwinmask;
+       struct task_struct      *task;          /* main task structure */
+       unsigned long           flags;          /* low level flags */
+       int                     cpu;            /* cpu we're on */
+       int                     preempt_count;  /* 0 => preemptable,
+                                                  <0 => BUG */
+       int                     softirq_count;
+       int                     hardirq_count;
+
+       u32 __unused;
+
+       /* Context switch saved kernel state. */
+       unsigned long ksp;      /* ... ksp __attribute__ ((aligned (8))); */
+       unsigned long kpc;
+       unsigned long kpsr;
+       unsigned long kwim;
+
+       /* A place to store user windows and stack pointers
+        * when the stack needs inspection.
+        */
+       struct reg_window32     reg_window[NSWINS];     /* align for ldd! */
+       unsigned long           rwbuf_stkptrs[NSWINS];
+       unsigned long           w_saved;
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ */
+#define INIT_THREAD_INFO(tsk)                          \
+{                                                      \
+       .uwinmask       =       0,                      \
+       .task           =       &tsk,                   \
+       .flags          =       0,                      \
+       .cpu            =       0,                      \
+       .preempt_count  =       INIT_PREEMPT_COUNT,     \
+}
+
+#define init_thread_info       (init_thread_union.thread_info)
+#define init_stack             (init_thread_union.stack)
+
+/* how to get the thread information struct from C */
+register struct thread_info *current_thread_info_reg asm("g6");
+#define current_thread_info()   (current_thread_info_reg)
+
+/*
+ * thread information allocation
+ */
+#define THREAD_SIZE_ORDER  1
+
+#endif /* __ASSEMBLY__ */
+
+/* Size of kernel stack for each process */
+#define THREAD_SIZE            (2 * PAGE_SIZE)
+
+/*
+ * Offsets in thread_info structure, used in assembly code
+ * The "#define REGWIN_SZ 0x40" was abolished, so no multiplications.
+ */
+#define TI_UWINMASK    0x00    /* uwinmask */
+#define TI_TASK                0x04
+#define TI_FLAGS       0x08
+#define TI_CPU         0x0c
+#define TI_PREEMPT     0x10    /* preempt_count */
+#define TI_SOFTIRQ     0x14    /* softirq_count */
+#define TI_HARDIRQ     0x18    /* hardirq_count */
+#define TI_KSP         0x20    /* ksp */
+#define TI_KPC         0x24    /* kpc (ldd'ed with kpc) */
+#define TI_KPSR                0x28    /* kpsr */
+#define TI_KWIM                0x2c    /* kwim (ldd'ed with kpsr) */
+#define TI_REG_WINDOW  0x30
+#define TI_RWIN_SPTRS  0x230
+#define TI_W_SAVED     0x250
+
+/*
+ * thread information flag bit numbers
+ */
+#define TIF_SYSCALL_TRACE      0       /* syscall trace active */
+#define TIF_NOTIFY_RESUME      1       /* callback before returning to user */
+#define TIF_SIGPENDING         2       /* signal pending */
+#define TIF_NEED_RESCHED       3       /* rescheduling necessary */
+#define TIF_RESTORE_SIGMASK    4       /* restore signal mask in do_signal() */
+#define TIF_USEDFPU            8       /* FPU was used by this task
+                                        * this quantum (SMP) */
+#define TIF_POLLING_NRFLAG     9       /* true if poll_idle() is polling
+                                        * TIF_NEED_RESCHED */
+#define TIF_MEMDIE             10      /* is terminating due to OOM killer */
+
+/* as above, but as bit values */
+#define _TIF_SYSCALL_TRACE     (1<<TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME     (1<<TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING                (1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED      (1<<TIF_NEED_RESCHED)
+#define _TIF_USEDFPU           (1<<TIF_USEDFPU)
+#define _TIF_POLLING_NRFLAG    (1<<TIF_POLLING_NRFLAG)
+
+#define _TIF_DO_NOTIFY_RESUME_MASK     (_TIF_NOTIFY_RESUME | \
+                                        _TIF_SIGPENDING)
+
+#define is_32bit_task()        (1)
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_THREAD_INFO_H */