84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
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#ifndef __BACKTRACE_H
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#define __BACKTRACE_H
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#ifndef __ASSEMBLY__
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#include <cpuport.h>
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/* Unwind reason code according the the ARM EABI documents */
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enum unwind_reason_code
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{
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URC_OK = 0, /* operation completed successfully */
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URC_CONTINUE_UNWIND = 8,
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URC_FAILURE = 9 /* unspecified failure of some kind */
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};
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struct unwind_idx
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{
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unsigned long addr_offset;
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unsigned long insn;
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};
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struct unwind_table
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{
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const struct unwind_idx *start;
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const struct unwind_idx *origin;
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const struct unwind_idx *stop;
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unsigned long begin_addr;
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unsigned long end_addr;
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};
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struct stackframe
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{
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/*
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* FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled
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* and R11 otherwise.
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*/
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unsigned long fp;
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unsigned long sp;
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unsigned long lr;
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unsigned long pc;
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};
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struct pt_regs
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{
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unsigned long uregs[18];
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};
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#define ARM_cpsr uregs[16]
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#define ARM_pc uregs[15]
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#define ARM_lr uregs[14]
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#define ARM_sp uregs[13]
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#define ARM_ip uregs[12]
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#define ARM_fp uregs[11]
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#define ARM_r10 uregs[10]
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#define ARM_r9 uregs[9]
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#define ARM_r8 uregs[8]
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#define ARM_r7 uregs[7]
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#define ARM_r6 uregs[6]
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#define ARM_r5 uregs[5]
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#define ARM_r4 uregs[4]
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#define ARM_r3 uregs[3]
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#define ARM_r2 uregs[2]
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#define ARM_r1 uregs[1]
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#define ARM_r0 uregs[0]
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#define ARM_ORIG_r0 uregs[17]
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#define instruction_pointer(regs) (regs)->ARM_pc
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#ifdef CONFIG_THUMB2_KERNEL
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#define frame_pointer(regs) (regs)->ARM_r7
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#else
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#define frame_pointer(regs) (regs)->ARM_fp
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#endif
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int unwind_frame(struct stackframe *frame, const struct unwind_idx **origin_idx, const struct unwind_idx exidx_start[], const struct unwind_idx exidx_end[]);
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void unwind_backtrace(struct pt_regs *regs, const struct unwind_idx exidx_start[], const struct unwind_idx exidx_end[]);
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void rt_unwind(struct rt_hw_exp_stack *regs, unsigned int pc_adj);
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void rt_backtrace(void);
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#endif /* !__ASSEMBLY__ */
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#endif /* __BACKTRACE_H */
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