mirror of https://github.com/torvalds/linux.git
38 lines
819 B
C
38 lines
819 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_UNWIND_USER_H
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#define _ASM_X86_UNWIND_USER_H
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#include <asm/ptrace.h>
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#include <asm/uprobes.h>
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#define ARCH_INIT_USER_FP_FRAME(ws) \
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.cfa_off = 2*(ws), \
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.ra_off = -1*(ws), \
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.fp_off = -2*(ws), \
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.use_fp = true,
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#define ARCH_INIT_USER_FP_ENTRY_FRAME(ws) \
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.cfa_off = 1*(ws), \
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.ra_off = -1*(ws), \
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.fp_off = 0, \
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.use_fp = false,
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static inline int unwind_user_word_size(struct pt_regs *regs)
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{
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/* We can't unwind VM86 stacks */
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if (regs->flags & X86_VM_MASK)
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return 0;
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#ifdef CONFIG_X86_64
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if (!user_64bit_mode(regs))
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return sizeof(int);
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#endif
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return sizeof(long);
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}
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static inline bool unwind_user_at_function_start(struct pt_regs *regs)
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{
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return is_uprobe_at_func_entry(regs);
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}
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#endif /* _ASM_X86_UNWIND_USER_H */
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