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Currently a SIGTRAP can denote any one of below reasons. - Breakpoint hit - H/W debug register hit - Single step - Signal sent through kill() or rasie() Architectures like powerpc/parisc provides infrastructure to demultiplex SIGTRAP signal by passing down the information for receiving SIGTRAP through si_code of siginfot_t structure. Here is an attempt is generalise this infrastructure by extending it to x86 and x86_64 archs. Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com> Cc: Roland McGrath <roland@redhat.com> Cc: akpm@linux-foundation.org Cc: paulus@samba.org Cc: linuxppc-dev@ozlabs.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
#ifndef ASM_X86__TRAPS_H
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#define ASM_X86__TRAPS_H
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/* Common in X86_32 and X86_64 */
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asmlinkage void divide_error(void);
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asmlinkage void debug(void);
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asmlinkage void nmi(void);
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asmlinkage void int3(void);
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asmlinkage void overflow(void);
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asmlinkage void bounds(void);
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asmlinkage void invalid_op(void);
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asmlinkage void device_not_available(void);
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asmlinkage void coprocessor_segment_overrun(void);
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asmlinkage void invalid_TSS(void);
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asmlinkage void segment_not_present(void);
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asmlinkage void stack_segment(void);
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asmlinkage void general_protection(void);
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asmlinkage void page_fault(void);
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asmlinkage void coprocessor_error(void);
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asmlinkage void simd_coprocessor_error(void);
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asmlinkage void alignment_check(void);
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asmlinkage void spurious_interrupt_bug(void);
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#ifdef CONFIG_X86_MCE
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asmlinkage void machine_check(void);
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#endif /* CONFIG_X86_MCE */
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void do_divide_error(struct pt_regs *, long);
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void do_overflow(struct pt_regs *, long);
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void do_bounds(struct pt_regs *, long);
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void do_coprocessor_segment_overrun(struct pt_regs *, long);
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void do_invalid_TSS(struct pt_regs *, long);
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void do_segment_not_present(struct pt_regs *, long);
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void do_stack_segment(struct pt_regs *, long);
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void do_alignment_check(struct pt_regs *, long);
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void do_invalid_op(struct pt_regs *, long);
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void do_general_protection(struct pt_regs *, long);
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void do_nmi(struct pt_regs *, long);
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static inline int get_si_code(unsigned long condition)
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{
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if (condition & DR_STEP)
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return TRAP_TRACE;
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else if (condition & (DR_TRAP0|DR_TRAP1|DR_TRAP2|DR_TRAP3))
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return TRAP_HWBKPT;
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else
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return TRAP_BRKPT;
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}
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extern int panic_on_unrecovered_nmi;
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extern int kstack_depth_to_print;
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#ifdef CONFIG_X86_32
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void do_iret_error(struct pt_regs *, long);
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void do_int3(struct pt_regs *, long);
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void do_debug(struct pt_regs *, long);
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void math_error(void __user *);
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void do_coprocessor_error(struct pt_regs *, long);
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void do_simd_coprocessor_error(struct pt_regs *, long);
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void do_spurious_interrupt_bug(struct pt_regs *, long);
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unsigned long patch_espfix_desc(unsigned long, unsigned long);
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asmlinkage void math_emulate(long);
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void do_page_fault(struct pt_regs *regs, unsigned long error_code);
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#else /* CONFIG_X86_32 */
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asmlinkage void double_fault(void);
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asmlinkage void do_int3(struct pt_regs *, long);
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asmlinkage void do_stack_segment(struct pt_regs *, long);
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asmlinkage void do_debug(struct pt_regs *, unsigned long);
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asmlinkage void do_coprocessor_error(struct pt_regs *);
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asmlinkage void do_simd_coprocessor_error(struct pt_regs *);
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asmlinkage void do_spurious_interrupt_bug(struct pt_regs *);
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asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code);
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#endif /* CONFIG_X86_32 */
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#endif /* ASM_X86__TRAPS_H */
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