Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 240 insertions, 0 deletions

diff --git a/include/asm-ia64/unwind.h b/include/asm-ia64/unwind.h
new file mode 100644
index 000000000000..61426ad3ecdb
--- /dev/null
+++ b/include/asm-ia64/unwind.h
@@ -0,0 +1,240 @@
+#ifndef _ASM_IA64_UNWIND_H
+#define _ASM_IA64_UNWIND_H
+
+/*
+ * Copyright (C) 1999-2000, 2003 Hewlett-Packard Co
+ *      David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * A simple API for unwinding kernel stacks.  This is used for
+ * debugging and error reporting purposes.  The kernel doesn't need
+ * full-blown stack unwinding with all the bells and whitles, so there
+ * is not much point in implementing the full IA-64 unwind API (though
+ * it would of course be possible to implement the kernel API on top
+ * of it).
+ */
+
+struct task_struct;     /* forward declaration */
+struct switch_stack;    /* forward declaration */
+
+enum unw_application_register {
+        UNW_AR_BSP,
+        UNW_AR_BSPSTORE,
+        UNW_AR_PFS,
+        UNW_AR_RNAT,
+        UNW_AR_UNAT,
+        UNW_AR_LC,
+        UNW_AR_EC,
+        UNW_AR_FPSR,
+        UNW_AR_RSC,
+        UNW_AR_CCV,
+        UNW_AR_CSD,
+        UNW_AR_SSD
+};
+
+/*
+ * The following declarations are private to the unwind
+ * implementation:
+ */
+
+struct unw_stack {
+        unsigned long limit;
+        unsigned long top;
+};
+
+#define UNW_FLAG_INTERRUPT_FRAME        (1UL << 0)
+
+/*
+ * No user of this module should every access this structure directly
+ * as it is subject to change.  It is declared here solely so we can
+ * use automatic variables.
+ */
+struct unw_frame_info {
+        struct unw_stack regstk;
+        struct unw_stack memstk;
+        unsigned int flags;
+        short hint;
+        short prev_script;
+
+        /* current frame info: */
+        unsigned long bsp;              /* backing store pointer value */
+        unsigned long sp;               /* stack pointer value */
+        unsigned long psp;              /* previous sp value */
+        unsigned long ip;               /* instruction pointer value */
+        unsigned long pr;               /* current predicate values */
+        unsigned long *cfm_loc;         /* cfm save location (or NULL) */
+        unsigned long pt;               /* struct pt_regs location */
+
+        struct task_struct *task;
+        struct switch_stack *sw;
+
+        /* preserved state: */
+        unsigned long *bsp_loc;         /* previous bsp save location */
+        unsigned long *bspstore_loc;
+        unsigned long *pfs_loc;
+        unsigned long *rnat_loc;
+        unsigned long *rp_loc;
+        unsigned long *pri_unat_loc;
+        unsigned long *unat_loc;
+        unsigned long *pr_loc;
+        unsigned long *lc_loc;
+        unsigned long *fpsr_loc;
+        struct unw_ireg {
+                unsigned long *loc;
+                struct unw_ireg_nat {
+                        long type : 3;                  /* enum unw_nat_type */
+                        signed long off : 61;           /* NaT word is at loc+nat.off */
+                } nat;
+        } r4, r5, r6, r7;
+        unsigned long *b1_loc, *b2_loc, *b3_loc, *b4_loc, *b5_loc;
+        struct ia64_fpreg *f2_loc, *f3_loc, *f4_loc, *f5_loc, *fr_loc[16];
+};
+
+/*
+ * The official API follows below:
+ */
+
+struct unw_table_entry {
+        u64 start_offset;
+        u64 end_offset;
+        u64 info_offset;
+};
+
+/*
+ * Initialize unwind support.
+ */
+extern void unw_init (void);
+
+extern void *unw_add_unwind_table (const char *name, unsigned long segment_base, unsigned long gp,
+                                   const void *table_start, const void *table_end);
+
+extern void unw_remove_unwind_table (void *handle);
+
+/*
+ * Prepare to unwind blocked task t.
+ */
+extern void unw_init_from_blocked_task (struct unw_frame_info *info, struct task_struct *t);
+
+/*
+ * Prepare to unwind from interruption.  The pt-regs and switch-stack structures must have
+ * be "adjacent" (no state modifications between pt-regs and switch-stack).
+ */
+extern void unw_init_from_interruption (struct unw_frame_info *info, struct task_struct *t,
+                                        struct pt_regs *pt, struct switch_stack *sw);
+
+extern void unw_init_frame_info (struct unw_frame_info *info, struct task_struct *t,
+                                 struct switch_stack *sw);
+
+/*
+ * Prepare to unwind the currently running thread.
+ */
+extern void unw_init_running (void (*callback)(struct unw_frame_info *info, void *arg), void *arg);
+
+/*
+ * Unwind to previous to frame.  Returns 0 if successful, negative
+ * number in case of an error.
+ */
+extern int unw_unwind (struct unw_frame_info *info);
+
+/*
+ * Unwind until the return pointer is in user-land (or until an error
+ * occurs).  Returns 0 if successful, negative number in case of
+ * error.
+ */
+extern int unw_unwind_to_user (struct unw_frame_info *info);
+
+#define unw_is_intr_frame(info) (((info)->flags & UNW_FLAG_INTERRUPT_FRAME) != 0)
+
+static inline int
+unw_get_ip (struct unw_frame_info *info, unsigned long *valp)
+{
+        *valp = (info)->ip;
+        return 0;
+}
+
+static inline int
+unw_get_sp (struct unw_frame_info *info, unsigned long *valp)
+{
+        *valp = (info)->sp;
+        return 0;
+}
+
+static inline int
+unw_get_psp (struct unw_frame_info *info, unsigned long *valp)
+{
+        *valp = (info)->psp;
+        return 0;
+}
+
+static inline int
+unw_get_bsp (struct unw_frame_info *info, unsigned long *valp)
+{
+        *valp = (info)->bsp;
+        return 0;
+}
+
+static inline int
+unw_get_cfm (struct unw_frame_info *info, unsigned long *valp)
+{
+        *valp = *(info)->cfm_loc;
+        return 0;
+}
+
+static inline int
+unw_set_cfm (struct unw_frame_info *info, unsigned long val)
+{
+        *(info)->cfm_loc = val;
+        return 0;
+}
+
+static inline int
+unw_get_rp (struct unw_frame_info *info, unsigned long *val)
+{
+        if (!info->rp_loc)
+                return -1;
+        *val = *info->rp_loc;
+        return 0;
+}
+
+extern int unw_access_gr (struct unw_frame_info *, int, unsigned long *, char *, int);
+extern int unw_access_br (struct unw_frame_info *, int, unsigned long *, int);
+extern int unw_access_fr (struct unw_frame_info *, int, struct ia64_fpreg *, int);
+extern int unw_access_ar (struct unw_frame_info *, int, unsigned long *, int);
+extern int unw_access_pr (struct unw_frame_info *, unsigned long *, int);
+
+static inline int
+unw_set_gr (struct unw_frame_info *i, int n, unsigned long v, char nat)
+{
+        return unw_access_gr(i, n, &v, &nat, 1);
+}
+
+static inline int
+unw_set_br (struct unw_frame_info *i, int n, unsigned long v)
+{
+        return unw_access_br(i, n, &v, 1);
+}
+
+static inline int
+unw_set_fr (struct unw_frame_info *i, int n, struct ia64_fpreg v)
+{
+        return unw_access_fr(i, n, &v, 1);
+}
+
+static inline int
+unw_set_ar (struct unw_frame_info *i, int n, unsigned long v)
+{
+        return unw_access_ar(i, n, &v, 1);
+}
+
+static inline int
+unw_set_pr (struct unw_frame_info *i, unsigned long v)
+{
+        return unw_access_pr(i, &v, 1);
+}
+
+#define unw_get_gr(i,n,v,nat)   unw_access_gr(i,n,v,nat,0)
+#define unw_get_br(i,n,v)       unw_access_br(i,n,v,0)
+#define unw_get_fr(i,n,v)       unw_access_fr(i,n,v,0)
+#define unw_get_ar(i,n,v)       unw_access_ar(i,n,v,0)
+#define unw_get_pr(i,v)         unw_access_pr(i,v,0)
+
+#endif /* _ASM_UNWIND_H */