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debug: arc: expose thread relinquish cause

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When a thread is preempted on ARC, caller-saved registers
are saved on the stack automatically (RIRQ) or manually
by the kernel ISR (FIRQ).
Exposing the thread's relinquish cause hints the debugger
that it can read more or less register values.

Signed-off-by: Bruno Mendes <bd_mendes@outlook.com>
This commit is contained in:
Bruno Mendes 2023-08-02 17:40:22 +01:00 • committed by Fabio Baltieri
commit 2510e1979b
1 changed files with 8 additions and 0 deletions
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8
subsys/debug/thread_info.c
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@ -24,6 +24,7 @@ enum {
THREAD_INFO_OFFSET_T_PREEMPT_FLOAT,
THREAD_INFO_OFFSET_T_COOP_FLOAT,
THREAD_INFO_OFFSET_T_ARM_EXC_RETURN,
THREAD_INFO_OFFSET_T_ARC_RELINQUISH_CAUSE,
};
#if CONFIG_MP_MAX_NUM_CPUS > 1
@ -137,7 +138,14 @@ size_t _kernel_thread_info_offsets[] = {
#else
[THREAD_INFO_OFFSET_T_ARM_EXC_RETURN] = THREAD_INFO_UNIMPLEMENTED,
#endif /* CONFIG_ARM_STORE_EXC_RETURN */
#if defined(CONFIG_ARC)
[THREAD_INFO_OFFSET_T_ARC_RELINQUISH_CAUSE] = offsetof(struct _thread_arch,
relinquish_cause),
#else
[THREAD_INFO_OFFSET_T_ARC_RELINQUISH_CAUSE] = THREAD_INFO_UNIMPLEMENTED,
#endif /* CONFIG_ARC */
};
extern size_t __attribute__((alias("_kernel_thread_info_offsets")))
_kernel_openocd_offsets;