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sync branch rt-smart. (#6641)

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* Synchronize the code of the rt mart branch to the master branch.
  * TTY device
  * Add lwP code from rt-smart
  * Add vnode in DFS, but DFS will be re-write for rt-smart
  * There are three libcpu for rt-smart:
    * arm/cortex-a, arm/aarch64
    * riscv64

Co-authored-by: Rbb666 <zhangbingru@rt-thread.com>
Co-authored-by: zhkag <zhkag@foxmail.com>
This commit is contained in:
guo
2022-12-03 12:07:44 +08:00
committed by GitHub
parent aaf5462c6d
commit ecf2d82159
1693 changed files with 389530 additions and 9680 deletions
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83
libcpu/arm/cortex-a/backtrace.h Normal file
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#ifndef __BACKTRACE_H
#define __BACKTRACE_H
#ifndef __ASSEMBLY__
#include <cpuport.h>
/* Unwind reason code according the the ARM EABI documents */
enum unwind_reason_code
{
URC_OK = 0, /* operation completed successfully */
URC_CONTINUE_UNWIND = 8,
URC_FAILURE = 9 /* unspecified failure of some kind */
};
struct unwind_idx
{
unsigned long addr_offset;
unsigned long insn;
};
struct unwind_table
{
const struct unwind_idx *start;
const struct unwind_idx *origin;
const struct unwind_idx *stop;
unsigned long begin_addr;
unsigned long end_addr;
};
struct stackframe
{
/*
* FP member should hold R7 when CONFIG_THUMB2_KERNEL is enabled
* and R11 otherwise.
*/
unsigned long fp;
unsigned long sp;
unsigned long lr;
unsigned long pc;
};
struct pt_regs
{
unsigned long uregs[18];
};
#define ARM_cpsr uregs[16]
#define ARM_pc uregs[15]
#define ARM_lr uregs[14]
#define ARM_sp uregs[13]
#define ARM_ip uregs[12]
#define ARM_fp uregs[11]
#define ARM_r10 uregs[10]
#define ARM_r9 uregs[9]
#define ARM_r8 uregs[8]
#define ARM_r7 uregs[7]
#define ARM_r6 uregs[6]
#define ARM_r5 uregs[5]
#define ARM_r4 uregs[4]
#define ARM_r3 uregs[3]
#define ARM_r2 uregs[2]
#define ARM_r1 uregs[1]
#define ARM_r0 uregs[0]
#define ARM_ORIG_r0 uregs[17]
#define instruction_pointer(regs) (regs)->ARM_pc
#ifdef CONFIG_THUMB2_KERNEL
#define frame_pointer(regs) (regs)->ARM_r7
#else
#define frame_pointer(regs) (regs)->ARM_fp
#endif
int unwind_frame(struct stackframe *frame, const struct unwind_idx **origin_idx, const struct unwind_idx exidx_start[], const struct unwind_idx exidx_end[]);
void unwind_backtrace(struct pt_regs *regs, const struct unwind_idx exidx_start[], const struct unwind_idx exidx_end[]);
void rt_unwind(struct rt_hw_exp_stack *regs, unsigned int pc_adj);
void rt_backtrace(void);
#endif /* !__ASSEMBLY__ */
#endif /* __BACKTRACE_H */