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arch:xtensa:dumpstate: use sched_dumpstack

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Use sched_dumpstack instead. The backtrace infomation like

xtensa_user_panic: User Exception: EXCCAUSE=0009 task: hello
xtensa_registerdump:    PC: 202b32b8    PS: 00060030
xtensa_registerdump:    A0: a02acb87    A1: 20998d10    A2: ffffaaaa    A3: 12345678
xtensa_registerdump:    A4: a02ba26c    A5: 209949c0    A6: 20990994    A7: 00000258
xtensa_registerdump:    A8: a02b32af    A9: 20998cb0   A10: 0000000f   A11: 209949a0
xtensa_registerdump:   A12: a02be95c   A13: 20994980   A14: 00000003   A15: 209949d0
xtensa_registerdump:   SAR: 00000000 CAUSE: 00000009 VADDR: ffffaaaa
xtensa_registerdump:  LBEG: 00000000  LEND: 00000000  LCNT: 00000000
xtensa_registerdump:  TMP0: 202b1512  TMP1: 20998af0
sched_dumpstack: [BackTrace| 3|0]:  0x202acbae 0x202b232e 0x202b1912 0x202b19f5 0x202b24f1 0x202b152f    0x40023 0x202b32b0
sched_dumpstack: [BackTrace| 3|1]:  0x202acb87 0x202a86a4

Signed-off-by: zhuyanlin <zhuyanlin1@xiaomi.com>
This commit is contained in:
zhuyanlin 2021-09-15 15:01:34 +08:00 committed by Xiang Xiao
parent 6e0f84dc88
commit cdb441cc3f
1 changed files with 10 additions and 113 deletions
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123
arch/xtensa/src/common/xtensa_dumpstate.c
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@ -69,6 +69,13 @@ static void up_taskdump(FAR struct tcb_s *tcb, FAR void *arg)
tcb->pid, (unsigned long)up_check_tcbstack(tcb),
(unsigned long)tcb->adj_stack_size);
#endif
/* Dump the backtrace */
#if defined(CONFIG_XTENSA_DUMPBT_ON_ASSERT) && \
defined(CONFIG_SCHED_BACKTRACE)
sched_dumpstack(rtcb->pid);
#endif
}
#endif
@ -150,117 +157,6 @@ static inline void xtensa_registerdump(void)
#endif
}
#ifdef CONFIG_XTENSA_DUMPBT_ON_ASSERT
/****************************************************************************
* Name: xtensa_getcause
****************************************************************************/
static inline uint32_t xtensa_getcause(void)
{
uint32_t cause;
__asm__ __volatile__
(
"rsr %0, EXCCAUSE" : "=r"(cause)
);
return cause;
}
/****************************************************************************
* Name: stackpc
****************************************************************************/
static inline uint32_t stackpc(uint32_t pc)
{
if (pc & 0x80000000)
{
/* Top two bits of a0 (return address) specify window increment.
* Overwrite to map to address space.
*/
pc = (pc & 0x3fffffff) | 0x40000000;
}
/* Minus 3 to get PC of previous instruction (i.e. instruction executed
* before return address).
*/
return pc - 3;
}
/****************************************************************************
* Name: corruptedframe
****************************************************************************/
static inline bool corruptedframe(uint32_t pc, uint32_t sp)
{
return !(xtensa_ptr_exec((void *)stackpc(pc)) || xtensa_sp_sane(sp));
}
/****************************************************************************
* Name: nextframe
****************************************************************************/
static bool nextframe(uint32_t *pc, uint32_t *sp, uint32_t *npc)
{
/* Use frame(i - 1)'s base save area located below frame(i)'s sp to get
* frame(i - 1)'s sp and frame(i - 2)'s pc. Base save area consists of
* 4 words under SP.
*/
void *bsa = (void *)*sp;
*pc = *npc;
*npc = *((uint32_t *)(bsa - 16));
*sp = *((uint32_t *)(bsa - 12));
return !corruptedframe(*pc, *sp);
}
/****************************************************************************
* Name: xtensa_btdump
****************************************************************************/
static inline void xtensa_btdump(void)
{
uint32_t pc;
uint32_t sp;
uint32_t npc;
int i;
bool corrupted = false;
uint32_t *regs = (uint32_t *)CURRENT_REGS;
pc = regs[REG_PC];
npc = regs[REG_A0]; /* return register */
sp = regs[REG_A1]; /* stack pointer */
_alert("Backtrace0: %x:%x\n", stackpc(pc), sp);
corrupted = corruptedframe(pc, sp) &&
!(xtensa_getcause() == EXCCAUSE_INSTR_PROHIBITED);
for (i = 1; i <= CONFIG_XTENSA_BTDEPTH && npc != 0 && !corrupted; i++)
{
if (!nextframe(&pc, &sp, &npc))
{
corrupted = true;
}
_alert("Backtrace%d: %x:%x\n", i, stackpc(pc), sp);
}
_alert("BACKTRACE %s\n",
(corrupted ? "CORRUPTED!" : (npc == 0 ? "Done":"CONTINUES...")));
}
#endif /* CONFIG_XTENSA_DUMPBT_ON_ASSERT */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: xtensa_dumpstate
****************************************************************************/
@ -288,8 +184,9 @@ void xtensa_dumpstate(void)
/* Dump the backtrace */
#ifdef CONFIG_XTENSA_DUMPBT_ON_ASSERT
xtensa_btdump();
#if defined(CONFIG_XTENSA_DUMPBT_ON_ASSERT) && \
defined(CONFIG_SCHED_BACKTRACE)
sched_dumpstack(rtcb->pid);
#endif
/* Get the limits on the user stack memory */