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/*
 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef _ASM_ARC_UNWIND_H
#define _ASM_ARC_UNWIND_H

#ifdef CONFIG_ARC_DW2_UNWIND

#include <linux/sched.h>

struct arc700_regs {
	unsigned long r0;
	unsigned long r1;
	unsigned long r2;
	unsigned long r3;
	unsigned long r4;
	unsigned long r5;
	unsigned long r6;
	unsigned long r7;
	unsigned long r8;
	unsigned long r9;
	unsigned long r10;
	unsigned long r11;
	unsigned long r12;
	unsigned long r13;
	unsigned long r14;
	unsigned long r15;
	unsigned long r16;
	unsigned long r17;
	unsigned long r18;
	unsigned long r19;
	unsigned long r20;
	unsigned long r21;
	unsigned long r22;
	unsigned long r23;
	unsigned long r24;
	unsigned long r25;
	unsigned long r26;
	unsigned long r27;	/* fp */
	unsigned long r28;	/* sp */
	unsigned long r29;
	unsigned long r30;
	unsigned long r31;	/* blink */
	unsigned long r63;	/* pc */
};

struct unwind_frame_info {
	struct arc700_regs regs;
	struct task_struct *task;
	unsigned call_frame:1;
};

#define UNW_PC(frame)		((frame)->regs.r63)
#define UNW_SP(frame)		((frame)->regs.r28)
#define UNW_BLINK(frame)	((frame)->regs.r31)

/* Rajesh FIXME */
#ifdef CONFIG_FRAME_POINTER
#define UNW_FP(frame)		((frame)->regs.r27)
#define FRAME_RETADDR_OFFSET	4
#define FRAME_LINK_OFFSET	0
#define STACK_BOTTOM_UNW(tsk)	STACK_LIMIT((tsk)->thread.ksp)
#define STACK_TOP_UNW(tsk)	((tsk)->thread.ksp)
#else
#define UNW_FP(frame)		((void)(frame), 0)
#endif

#define STACK_LIMIT(ptr)	(((ptr) - 1) & ~(THREAD_SIZE - 1))

#define UNW_REGISTER_INFO \
	PTREGS_INFO(r0), \
	PTREGS_INFO(r1), \
	PTREGS_INFO(r2), \
	PTREGS_INFO(r3), \
	PTREGS_INFO(r4), \
	PTREGS_INFO(r5), \
	PTREGS_INFO(r6), \
	PTREGS_INFO(r7), \
	PTREGS_INFO(r8), \
	PTREGS_INFO(r9), \
	PTREGS_INFO(r10), \
	PTREGS_INFO(r11), \
	PTREGS_INFO(r12), \
	PTREGS_INFO(r13), \
	PTREGS_INFO(r14), \
	PTREGS_INFO(r15), \
	PTREGS_INFO(r16), \
	PTREGS_INFO(r17), \
	PTREGS_INFO(r18), \
	PTREGS_INFO(r19), \
	PTREGS_INFO(r20), \
	PTREGS_INFO(r21), \
	PTREGS_INFO(r22), \
	PTREGS_INFO(r23), \
	PTREGS_INFO(r24), \
	PTREGS_INFO(r25), \
	PTREGS_INFO(r26), \
	PTREGS_INFO(r27), \
	PTREGS_INFO(r28), \
	PTREGS_INFO(r29), \
	PTREGS_INFO(r30), \
	PTREGS_INFO(r31), \
	PTREGS_INFO(r63)

#define UNW_DEFAULT_RA(raItem, dataAlign) \
	((raItem).where == Memory && !((raItem).value * (dataAlign) + 4))

extern int arc_unwind(struct unwind_frame_info *frame);
extern void arc_unwind_init(void);
extern void *unwind_add_table(struct module *module, const void *table_start,
			      unsigned long table_size);
extern void unwind_remove_table(void *handle, int init_only);

static inline int
arch_unwind_init_running(struct unwind_frame_info *info,
			 int (*callback) (struct unwind_frame_info *info,
					  void *arg),
			 void *arg)
{
	return 0;
}

static inline int arch_unw_user_mode(const struct unwind_frame_info *info)
{
	return 0;
}

static inline void arch_unw_init_blocked(struct unwind_frame_info *info)
{
	return;
}

static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
					    struct pt_regs *regs)
{
	return;
}

#else

#define UNW_PC(frame) ((void)(frame), 0)
#define UNW_SP(frame) ((void)(frame), 0)
#define UNW_FP(frame) ((void)(frame), 0)

static inline void arc_unwind_init(void)
{
}

#define unwind_add_table(a, b, c)
#define unwind_remove_table(a, b)

#endif /* CONFIG_ARC_DW2_UNWIND */

#endif /* _ASM_ARC_UNWIND_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 681 B 0644
arcregs.h File 8.59 KB 0644
asm-offsets.h File 311 B 0644
atomic.h File 15.14 KB 0644
barrier.h File 1.75 KB 0644
bitops.h File 9.81 KB 0644
bug.h File 938 B 0644
cache.h File 3.77 KB 0644
cacheflush.h File 3.88 KB 0644
checksum.h File 2.45 KB 0644
cmpxchg.h File 5.4 KB 0644
current.h File 695 B 0644
delay.h File 1.99 KB 0644
disasm.h File 3.87 KB 0644
dma-mapping.h File 734 B 0644
dma.h File 459 B 0644
dwarf.h File 892 B 0644
elf.h File 2.15 KB 0644
entry-arcv2.h File 4.85 KB 0644
entry-compact.h File 9.29 KB 0644
entry.h File 6.73 KB 0644
exec.h File 410 B 0644
fb.h File 411 B 0644
futex.h File 3.67 KB 0644
highmem.h File 1.46 KB 0644
hugepage.h File 2.41 KB 0644
io.h File 6.42 KB 0644
irq.h File 825 B 0644
irqflags-arcv2.h File 3.45 KB 0644
irqflags-compact.h File 4.25 KB 0644
irqflags.h File 509 B 0644
kdebug.h File 400 B 0644
kgdb.h File 1.35 KB 0644
kmap_types.h File 489 B 0644
kprobes.h File 1.37 KB 0644
linkage.h File 1.42 KB 0644
mach_desc.h File 2.06 KB 0644
mmu.h File 2.44 KB 0644
mmu_context.h File 5.67 KB 0644
mmzone.h File 989 B 0644
module.h File 661 B 0644
page.h File 2.99 KB 0644
pci.h File 705 B 0644
perf_event.h File 6.86 KB 0644
pgalloc.h File 3.79 KB 0644
pgtable.h File 14.2 KB 0644
processor.h File 4.69 KB 0644
ptrace.h File 3.87 KB 0644
sections.h File 407 B 0644
segment.h File 612 B 0644
serial.h File 644 B 0644
setup.h File 1.18 KB 0644
shmparam.h File 442 B 0644
smp.h File 4.25 KB 0644
spinlock.h File 8.79 KB 0644
spinlock_types.h File 1.03 KB 0644
stacktrace.h File 1.29 KB 0644
string.h File 1.15 KB 0644
switch_to.h File 1.17 KB 0644
syscall.h File 1.57 KB 0644
syscalls.h File 653 B 0644
thread_info.h File 3.39 KB 0644
timex.h File 508 B 0644
tlb-mmu1.h File 3.48 KB 0644
tlb.h File 1.23 KB 0644
tlbflush.h File 1.76 KB 0644
uaccess.h File 18.45 KB 0644
unaligned.h File 771 B 0644
unwind.h File 3.51 KB 0644