157 lines
3.4 KiB
C
157 lines
3.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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*/
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#ifndef _ASM_ARC_UNWIND_H
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#define _ASM_ARC_UNWIND_H
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#ifdef CONFIG_ARC_DW2_UNWIND
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#include <linux/sched.h>
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struct arc700_regs {
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unsigned long r0;
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unsigned long r1;
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unsigned long r2;
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unsigned long r3;
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unsigned long r4;
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unsigned long r5;
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unsigned long r6;
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unsigned long r7;
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unsigned long r8;
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unsigned long r9;
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unsigned long r10;
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unsigned long r11;
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unsigned long r12;
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unsigned long r13;
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unsigned long r14;
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unsigned long r15;
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unsigned long r16;
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unsigned long r17;
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unsigned long r18;
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unsigned long r19;
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unsigned long r20;
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unsigned long r21;
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unsigned long r22;
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unsigned long r23;
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unsigned long r24;
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unsigned long r25;
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unsigned long r26;
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unsigned long r27; /* fp */
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unsigned long r28; /* sp */
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unsigned long r29;
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unsigned long r30;
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unsigned long r31; /* blink */
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unsigned long r63; /* pc */
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};
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struct unwind_frame_info {
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struct arc700_regs regs;
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struct task_struct *task;
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unsigned call_frame:1;
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};
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#define UNW_PC(frame) ((frame)->regs.r63)
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#define UNW_SP(frame) ((frame)->regs.r28)
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#define UNW_BLINK(frame) ((frame)->regs.r31)
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/* Rajesh FIXME */
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#ifdef CONFIG_FRAME_POINTER
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#define UNW_FP(frame) ((frame)->regs.r27)
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#define FRAME_RETADDR_OFFSET 4
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#define FRAME_LINK_OFFSET 0
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#define STACK_BOTTOM_UNW(tsk) STACK_LIMIT((tsk)->thread.ksp)
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#define STACK_TOP_UNW(tsk) ((tsk)->thread.ksp)
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#else
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#define UNW_FP(frame) ((void)(frame), 0)
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#endif
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#define STACK_LIMIT(ptr) (((ptr) - 1) & ~(THREAD_SIZE - 1))
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#define UNW_REGISTER_INFO \
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PTREGS_INFO(r0), \
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PTREGS_INFO(r1), \
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PTREGS_INFO(r2), \
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PTREGS_INFO(r3), \
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PTREGS_INFO(r4), \
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PTREGS_INFO(r5), \
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PTREGS_INFO(r6), \
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PTREGS_INFO(r7), \
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PTREGS_INFO(r8), \
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PTREGS_INFO(r9), \
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PTREGS_INFO(r10), \
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PTREGS_INFO(r11), \
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PTREGS_INFO(r12), \
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PTREGS_INFO(r13), \
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PTREGS_INFO(r14), \
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PTREGS_INFO(r15), \
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PTREGS_INFO(r16), \
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PTREGS_INFO(r17), \
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PTREGS_INFO(r18), \
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PTREGS_INFO(r19), \
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PTREGS_INFO(r20), \
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PTREGS_INFO(r21), \
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PTREGS_INFO(r22), \
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PTREGS_INFO(r23), \
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PTREGS_INFO(r24), \
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PTREGS_INFO(r25), \
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PTREGS_INFO(r26), \
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PTREGS_INFO(r27), \
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PTREGS_INFO(r28), \
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PTREGS_INFO(r29), \
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PTREGS_INFO(r30), \
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PTREGS_INFO(r31), \
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PTREGS_INFO(r63)
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#define UNW_DEFAULT_RA(raItem, dataAlign) \
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((raItem).where == Memory && !((raItem).value * (dataAlign) + 4))
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extern int arc_unwind(struct unwind_frame_info *frame);
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extern void arc_unwind_init(void);
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extern void *unwind_add_table(struct module *module, const void *table_start,
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unsigned long table_size);
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extern void unwind_remove_table(void *handle, int init_only);
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static inline int
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arch_unwind_init_running(struct unwind_frame_info *info,
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int (*callback) (struct unwind_frame_info *info,
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void *arg),
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void *arg)
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{
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return 0;
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}
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static inline int arch_unw_user_mode(const struct unwind_frame_info *info)
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{
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return 0;
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}
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static inline void arch_unw_init_blocked(struct unwind_frame_info *info)
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{
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return;
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}
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static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
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struct pt_regs *regs)
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{
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return;
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}
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#else
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#define UNW_PC(frame) ((void)(frame), 0)
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#define UNW_SP(frame) ((void)(frame), 0)
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#define UNW_FP(frame) ((void)(frame), 0)
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static inline void arc_unwind_init(void)
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{
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}
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#define unwind_add_table(a, b, c)
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#define unwind_remove_table(a, b)
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#endif /* CONFIG_ARC_DW2_UNWIND */
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#endif /* _ASM_ARC_UNWIND_H */
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