/*

 * Copyright (C) 1999-2000 Hewlett-Packard Co

 * Copyright (C) 1999-2000 David Mosberger-Tang <davidm@hpl.hp.com>

 */

/*

 * Copyright (C) 1998, 1999 Hewlett-Packard Co

 * Copyright (C) 1998, 1999 David Mosberger-Tang <davidm@hpl.hp.com>

 */

/*

 *  unwind.h

 *

 *  Copyright (C) 2002, 2003, 2004, 2005 David Anderson

 *  Copyright (C) 2002, 2003, 2004, 2005 Red Hat, Inc. All rights reserved.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  Adapted from:

 *

 *    include/asm-ia64/fpu.h  (kernel-2.4.18-6.23)

 *    include/asm-ia64/unwind.h  (kernel-2.4.18-6.23)

 */

#ifndef _ASM_IA64_FPU_H

#define _ASM_IA64_FPU_H

struct ia64_fpreg {

        union {

                unsigned long bits[2];

        } u;

} __attribute__ ((aligned (16)));

#endif /* _ASM_IA64_FPU_H */

#ifndef _ASM_IA64_UNWIND_H

#define _ASM_IA64_UNWIND_H

/*

 * 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) */

#if defined(UNWIND_V2) || defined(UNWIND_V3)

	unsigned long pt;		/* struct pt_regs location */

#endif

	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:

 */

/*

 * Initialize unwind support.

 */

extern void unw_init (void);

extern void unw_create_gate_table (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.

 */

#ifndef REDHAT

extern void unw_init_from_blocked_task (struct unw_frame_info *info, struct task_struct *t);

extern void unw_init_frame_info (struct unw_frame_info *info, struct task_struct *t,

				 struct switch_stack *sw);

#endif /* !REDHAT */

/*

 * 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.

 */

#ifndef REDHAT

extern int unw_unwind (struct unw_frame_info *info);

#endif /* !REDHAT */

/*

 * 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;

}

#ifdef UNWIND_V1

extern int unw_access_gr_v1 (struct unw_frame_info *, int, unsigned long *, char *, int);

extern int unw_access_br_v1 (struct unw_frame_info *, int, unsigned long *, int);

extern int unw_access_fr_v1 (struct unw_frame_info *, int, struct ia64_fpreg *, int);

extern int unw_access_ar_v1 (struct unw_frame_info *, int, unsigned long *, int);

extern int unw_access_pr_v1 (struct unw_frame_info *, unsigned long *, int);

#define unw_access_gr unw_access_gr_v1

#define unw_access_br unw_access_br_v1

#define unw_access_fr unw_access_fr_v1

#define unw_access_ar unw_access_ar_v1

#define unw_access_pr unw_access_pr_v1

#endif

#ifdef UNWIND_V2

extern int unw_access_gr_v2 (struct unw_frame_info *, int, unsigned long *, char *, int);

extern int unw_access_br_v2 (struct unw_frame_info *, int, unsigned long *, int);

extern int unw_access_fr_v2 (struct unw_frame_info *, int, struct ia64_fpreg *, int);

extern int unw_access_ar_v2 (struct unw_frame_info *, int, unsigned long *, int);

extern int unw_access_pr_v2 (struct unw_frame_info *, unsigned long *, int);

#define unw_access_gr unw_access_gr_v2

#define unw_access_br unw_access_br_v2

#define unw_access_fr unw_access_fr_v2

#define unw_access_ar unw_access_ar_v2

#define unw_access_pr unw_access_pr_v2

#endif

#ifdef UNWIND_V3

extern int unw_access_gr_v3 (struct unw_frame_info *, int, unsigned long *, char *, int);

extern int unw_access_br_v3 (struct unw_frame_info *, int, unsigned long *, int);

extern int unw_access_fr_v3 (struct unw_frame_info *, int, struct ia64_fpreg *, int);

extern int unw_access_ar_v3 (struct unw_frame_info *, int, unsigned long *, int);

extern int unw_access_pr_v3 (struct unw_frame_info *, unsigned long *, int);

#define unw_access_gr unw_access_gr_v3

#define unw_access_br unw_access_br_v3

#define unw_access_fr unw_access_fr_v3

#define unw_access_ar unw_access_ar_v3

#define unw_access_pr unw_access_pr_v3

#endif

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)

#ifdef UNWIND_V1

struct switch_stack {

	unsigned long caller_unat;	/* user NaT collection register (preserved) */

	unsigned long ar_fpsr;		/* floating-point status register */

	struct ia64_fpreg f2;		/* preserved */

	struct ia64_fpreg f3;		/* preserved */

	struct ia64_fpreg f4;		/* preserved */

	struct ia64_fpreg f5;		/* preserved */

	struct ia64_fpreg f10;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f11;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f12;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f13;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f14;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f15;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f16;		/* preserved */

	struct ia64_fpreg f17;		/* preserved */

	struct ia64_fpreg f18;		/* preserved */

	struct ia64_fpreg f19;		/* preserved */

	struct ia64_fpreg f20;		/* preserved */

	struct ia64_fpreg f21;		/* preserved */

	struct ia64_fpreg f22;		/* preserved */

	struct ia64_fpreg f23;		/* preserved */

	struct ia64_fpreg f24;		/* preserved */

	struct ia64_fpreg f25;		/* preserved */

	struct ia64_fpreg f26;		/* preserved */

	struct ia64_fpreg f27;		/* preserved */

	struct ia64_fpreg f28;		/* preserved */

	struct ia64_fpreg f29;		/* preserved */

	struct ia64_fpreg f30;		/* preserved */

	struct ia64_fpreg f31;		/* preserved */

	unsigned long r4;		/* preserved */

	unsigned long r5;		/* preserved */

	unsigned long r6;		/* preserved */

	unsigned long r7;		/* preserved */

	unsigned long b0;		/* so we can force a direct return in copy_thread */

	unsigned long b1;

	unsigned long b2;

	unsigned long b3;

	unsigned long b4;

	unsigned long b5;

	unsigned long ar_pfs;		/* previous function state */

	unsigned long ar_lc;		/* loop counter (preserved) */

	unsigned long ar_unat;		/* NaT bits for r4-r7 */

	unsigned long ar_rnat;		/* RSE NaT collection register */

	unsigned long ar_bspstore;	/* RSE dirty base (preserved) */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */

};

struct pt_regs {

	/* The following registers are saved by SAVE_MIN: */

	unsigned long cr_ipsr;		/* interrupted task's psr */

	unsigned long cr_iip;		/* interrupted task's instruction pointer */

	unsigned long cr_ifs;		/* interrupted task's function state */

	unsigned long ar_unat;		/* interrupted task's NaT register (preserved) */

	unsigned long ar_pfs;		/* prev function state  */

	unsigned long ar_rsc;		/* RSE configuration */

	/* The following two are valid only if cr_ipsr.cpl > 0: */

	unsigned long ar_rnat;		/* RSE NaT */

	unsigned long ar_bspstore;	/* RSE bspstore */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */

	unsigned long b6;		/* scratch */

	unsigned long loadrs;		/* size of dirty partition << 16 */

	unsigned long r1;		/* the gp pointer */

	unsigned long r2;		/* scratch */

	unsigned long r3;		/* scratch */

	unsigned long r12;		/* interrupted task's memory stack pointer */

	unsigned long r13;		/* thread pointer */

	unsigned long r14;		/* scratch */

	unsigned long r15;		/* scratch */

	unsigned long r8;		/* scratch (return value register 0) */

	unsigned long r9;		/* scratch (return value register 1) */

	unsigned long r10;		/* scratch (return value register 2) */

	unsigned long r11;		/* scratch (return value register 3) */

	/* The following registers are saved by SAVE_REST: */

	unsigned long r16;		/* scratch */

	unsigned long r17;		/* scratch */

	unsigned long r18;		/* scratch */

	unsigned long r19;		/* scratch */

	unsigned long r20;		/* scratch */

	unsigned long r21;		/* scratch */

	unsigned long r22;		/* scratch */

	unsigned long r23;		/* scratch */

	unsigned long r24;		/* scratch */

	unsigned long r25;		/* scratch */

	unsigned long r26;		/* scratch */

	unsigned long r27;		/* scratch */

	unsigned long r28;		/* scratch */

	unsigned long r29;		/* scratch */

	unsigned long r30;		/* scratch */

	unsigned long r31;		/* scratch */

	unsigned long ar_ccv;		/* compare/exchange value (scratch) */

	unsigned long ar_fpsr;		/* floating point status (preserved) */

	unsigned long b0;		/* return pointer (bp) */

	unsigned long b7;		/* scratch */

	/*

	 * Floating point registers that the kernel considers

	 * scratch:

	 */

	struct ia64_fpreg f6;		/* scratch */

	struct ia64_fpreg f7;		/* scratch */

	struct ia64_fpreg f8;		/* scratch */

	struct ia64_fpreg f9;		/* scratch */

};

#endif  /* UNWIND_V1 */

#ifdef UNWIND_V2

struct switch_stack {

	unsigned long caller_unat;	/* user NaT collection register (preserved) */

	unsigned long ar_fpsr;		/* floating-point status register */

	struct ia64_fpreg f2;		/* preserved */

	struct ia64_fpreg f3;		/* preserved */

	struct ia64_fpreg f4;		/* preserved */

	struct ia64_fpreg f5;		/* preserved */

	struct ia64_fpreg f10;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f11;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f12;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f13;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f14;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f15;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f16;		/* preserved */

	struct ia64_fpreg f17;		/* preserved */

	struct ia64_fpreg f18;		/* preserved */

	struct ia64_fpreg f19;		/* preserved */

	struct ia64_fpreg f20;		/* preserved */

	struct ia64_fpreg f21;		/* preserved */

	struct ia64_fpreg f22;		/* preserved */

	struct ia64_fpreg f23;		/* preserved */

	struct ia64_fpreg f24;		/* preserved */

	struct ia64_fpreg f25;		/* preserved */

	struct ia64_fpreg f26;		/* preserved */

	struct ia64_fpreg f27;		/* preserved */

	struct ia64_fpreg f28;		/* preserved */

	struct ia64_fpreg f29;		/* preserved */

	struct ia64_fpreg f30;		/* preserved */

	struct ia64_fpreg f31;		/* preserved */

	unsigned long r4;		/* preserved */

	unsigned long r5;		/* preserved */

	unsigned long r6;		/* preserved */

	unsigned long r7;		/* preserved */

	unsigned long b0;		/* so we can force a direct return in copy_thread */

	unsigned long b1;

	unsigned long b2;

	unsigned long b3;

	unsigned long b4;

	unsigned long b5;

	unsigned long ar_pfs;		/* previous function state */

	unsigned long ar_lc;		/* loop counter (preserved) */

	unsigned long ar_unat;		/* NaT bits for r4-r7 */

	unsigned long ar_rnat;		/* RSE NaT collection register */

	unsigned long ar_bspstore;	/* RSE dirty base (preserved) */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */

};

struct pt_regs {

	/* The following registers are saved by SAVE_MIN: */

	unsigned long cr_ipsr;		/* interrupted task's psr */

	unsigned long cr_iip;		/* interrupted task's instruction pointer */

	unsigned long cr_ifs;		/* interrupted task's function state */

	unsigned long ar_unat;		/* interrupted task's NaT register (preserved) */

	unsigned long ar_pfs;		/* prev function state  */

	unsigned long ar_rsc;		/* RSE configuration */

	/* The following two are valid only if cr_ipsr.cpl > 0: */

	unsigned long ar_rnat;		/* RSE NaT */

	unsigned long ar_bspstore;	/* RSE bspstore */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */

	unsigned long b6;		/* scratch */

	unsigned long loadrs;		/* size of dirty partition << 16 */

	unsigned long r1;		/* the gp pointer */

	unsigned long r2;		/* scratch */

	unsigned long r3;		/* scratch */

	unsigned long r12;		/* interrupted task's memory stack pointer */

	unsigned long r13;		/* thread pointer */

	unsigned long r14;		/* scratch */

	unsigned long r15;		/* scratch */

	unsigned long r8;		/* scratch (return value register 0) */

	unsigned long r9;		/* scratch (return value register 1) */

	unsigned long r10;		/* scratch (return value register 2) */

	unsigned long r11;		/* scratch (return value register 3) */

	/* The following registers are saved by SAVE_REST: */

	unsigned long r16;		/* scratch */

	unsigned long r17;		/* scratch */

	unsigned long r18;		/* scratch */

	unsigned long r19;		/* scratch */

	unsigned long r20;		/* scratch */

	unsigned long r21;		/* scratch */

	unsigned long r22;		/* scratch */

	unsigned long r23;		/* scratch */

	unsigned long r24;		/* scratch */

	unsigned long r25;		/* scratch */

	unsigned long r26;		/* scratch */

	unsigned long r27;		/* scratch */

	unsigned long r28;		/* scratch */

	unsigned long r29;		/* scratch */

	unsigned long r30;		/* scratch */

	unsigned long r31;		/* scratch */

	unsigned long ar_ccv;		/* compare/exchange value (scratch) */

	unsigned long ar_fpsr;		/* floating point status (preserved) */

	unsigned long b0;		/* return pointer (bp) */

	unsigned long b7;		/* scratch */

	/*

	 * Floating point registers that the kernel considers

	 * scratch:

	 */

	struct ia64_fpreg f6;		/* scratch */

	struct ia64_fpreg f7;		/* scratch */

	struct ia64_fpreg f8;		/* scratch */

	struct ia64_fpreg f9;		/* scratch */

};

#endif /* UNWIND_V2 */

#ifdef UNWIND_V3

struct pt_regs {

	/* The following registers are saved by SAVE_MIN: */

	unsigned long b6;		/* scratch */

	unsigned long b7;		/* scratch */

	unsigned long ar_csd;           /* used by cmp8xchg16 (scratch) */

	unsigned long ar_ssd;           /* reserved for future use (scratch) */

	unsigned long r8;		/* scratch (return value register 0) */

	unsigned long r9;		/* scratch (return value register 1) */

	unsigned long r10;		/* scratch (return value register 2) */

	unsigned long r11;		/* scratch (return value register 3) */

	unsigned long cr_ipsr;		/* interrupted task's psr */

	unsigned long cr_iip;		/* interrupted task's instruction pointer */

	unsigned long cr_ifs;		/* interrupted task's function state */

	unsigned long ar_unat;		/* interrupted task's NaT register (preserved) */

	unsigned long ar_pfs;		/* prev function state  */

	unsigned long ar_rsc;		/* RSE configuration */

	/* The following two are valid only if cr_ipsr.cpl > 0: */

	unsigned long ar_rnat;		/* RSE NaT */

	unsigned long ar_bspstore;	/* RSE bspstore */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */

	unsigned long b0;		/* return pointer (bp) */

	unsigned long loadrs;		/* size of dirty partition << 16 */

	unsigned long r1;		/* the gp pointer */

	unsigned long r12;		/* interrupted task's memory stack pointer */

	unsigned long r13;		/* thread pointer */

	unsigned long ar_fpsr;		/* floating point status (preserved) */

	unsigned long r15;		/* scratch */

	/* The remaining registers are NOT saved for system calls.  */

	unsigned long r14;		/* scratch */

	unsigned long r2;		/* scratch */

	unsigned long r3;		/* scratch */

	/* The following registers are saved by SAVE_REST: */

	unsigned long r16;		/* scratch */

	unsigned long r17;		/* scratch */

	unsigned long r18;		/* scratch */

	unsigned long r19;		/* scratch */

	unsigned long r20;		/* scratch */

	unsigned long r21;		/* scratch */

	unsigned long r22;		/* scratch */

	unsigned long r23;		/* scratch */

	unsigned long r24;		/* scratch */

	unsigned long r25;		/* scratch */

	unsigned long r26;		/* scratch */

	unsigned long r27;		/* scratch */

	unsigned long r28;		/* scratch */

	unsigned long r29;		/* scratch */

	unsigned long r30;		/* scratch */

	unsigned long r31;		/* scratch */

	unsigned long ar_ccv;		/* compare/exchange value (scratch) */

	/*

	 * Floating point registers that the kernel considers scratch:

	 */

	struct ia64_fpreg f6;		/* scratch */

	struct ia64_fpreg f7;		/* scratch */

	struct ia64_fpreg f8;		/* scratch */

	struct ia64_fpreg f9;		/* scratch */

	struct ia64_fpreg f10;		/* scratch */

	struct ia64_fpreg f11;		/* scratch */

};

/*

 * This structure contains the addition registers that need to

 * preserved across a context switch.  This generally consists of

 * "preserved" registers.

 */

struct switch_stack {

	unsigned long caller_unat;	/* user NaT collection register (preserved) */

	unsigned long ar_fpsr;		/* floating-point status register */

	struct ia64_fpreg f2;		/* preserved */

	struct ia64_fpreg f3;		/* preserved */

	struct ia64_fpreg f4;		/* preserved */

	struct ia64_fpreg f5;		/* preserved */

	struct ia64_fpreg f12;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f13;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f14;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f15;		/* scratch, but untouched by kernel */

	struct ia64_fpreg f16;		/* preserved */

	struct ia64_fpreg f17;		/* preserved */

	struct ia64_fpreg f18;		/* preserved */

	struct ia64_fpreg f19;		/* preserved */

	struct ia64_fpreg f20;		/* preserved */

	struct ia64_fpreg f21;		/* preserved */

	struct ia64_fpreg f22;		/* preserved */

	struct ia64_fpreg f23;		/* preserved */

	struct ia64_fpreg f24;		/* preserved */

	struct ia64_fpreg f25;		/* preserved */

	struct ia64_fpreg f26;		/* preserved */

	struct ia64_fpreg f27;		/* preserved */

	struct ia64_fpreg f28;		/* preserved */

	struct ia64_fpreg f29;		/* preserved */

	struct ia64_fpreg f30;		/* preserved */

	struct ia64_fpreg f31;		/* preserved */

	unsigned long r4;		/* preserved */

	unsigned long r5;		/* preserved */

	unsigned long r6;		/* preserved */

	unsigned long r7;		/* preserved */

	unsigned long b0;		/* so we can force a direct return in copy_thread */

	unsigned long b1;

	unsigned long b2;

	unsigned long b3;

	unsigned long b4;

	unsigned long b5;

	unsigned long ar_pfs;		/* previous function state */

	unsigned long ar_lc;		/* loop counter (preserved) */

	unsigned long ar_unat;		/* NaT bits for r4-r7 */

	unsigned long ar_rnat;		/* RSE NaT collection register */

	unsigned long ar_bspstore;	/* RSE dirty base (preserved) */

	unsigned long pr;		/* 64 predicate registers (1 bit each) */

};

#endif /* UNWIND_V3 */

#endif /* _ASM_UNWIND_H */