4  *  SPDX-License-Identifier: Apache-2.0
9 static bool valid_stack(uintptr_t addr, k_tid_t current)  in valid_stack()  argument
11 	return current->stack_info.start <= addr &&  in valid_stack()
12 		addr < current->stack_info.start + current->stack_info.size;  in valid_stack()
15 static inline bool in_text_region(uintptr_t addr)  in in_text_region()  argument
19 	return (addr >= (uintptr_t)&__text_region_start) && (addr < (uintptr_t)&__text_region_end);  in in_text_region()
36 	 * In riscv (arch/riscv/core/isr.S) ra, ip($mepc) and fp($s0) are saved  in arch_perf_current_stack_trace()
39 	 * _current_cpu->irq_stack and save $sp with offset -16 on irq stack  in arch_perf_current_stack_trace()
41 	 * The following lines lines do the reverse things to get ra, ip anf fp  in arch_perf_current_stack_trace()
45 		*((struct arch_esf **)(((uintptr_t)_current_cpu->irq_stack) - 16));  in arch_perf_current_stack_trace()
53 	 *  [-] <- $fp($s0) (curr)  in arch_perf_current_stack_trace()
61 	 *  [-] <- $fp($s0) (curr)  in arch_perf_current_stack_trace()
66 	void **fp = (void **)esf->s0;  in arch_perf_current_stack_trace()
67 	void **new_fp = (void **)fp[-1];  in arch_perf_current_stack_trace()
69 	buf[idx++] = (uintptr_t)esf->mepc;  in arch_perf_current_stack_trace()
78 	buf[idx++] = (uintptr_t)esf->ra;  in arch_perf_current_stack_trace()
87 		if (!in_text_region((uintptr_t)fp[-1])) {  in arch_perf_current_stack_trace()
91 		buf[idx++] = (uintptr_t)fp[-1];  in arch_perf_current_stack_trace()
92 		new_fp = (void **)fp[-2];  in arch_perf_current_stack_trace()
95 		 * anti-infinity-loop if  in arch_perf_current_stack_trace()