66 static inline bool fix_exception(unsigned long pc)  in fix_exception()  argument
74 		if (scan_handlers(pc - pcpu_handlers[cpu]))  in fix_exception()
78 	return scan_handlers(pc - eentry);  in fix_exception()
83  * tracing. Prologue analysis will stop soon because PC is at entry.
85 static inline bool fix_ftrace(unsigned long pc)  in fix_ftrace()  argument
88 	return pc == (unsigned long)ftrace_call + LOONGARCH_INSN_SIZE;  in fix_ftrace()
96 	if (!fix_exception(state->pc) && !fix_ftrace(state->pc))  in unwind_state_fixup()
115 	unsigned long size, offset, pc;  in unwind_by_prologue()  local
127 		state->pc = regs->csr_era;  in unwind_by_prologue()
134 	 * When first is not set, the PC is a return address in the previous frame.  in unwind_by_prologue()
137 	pc = state->pc - (state->first ? 0 : LOONGARCH_INSN_SIZE);  in unwind_by_prologue()
138 	if (!kallsyms_lookup_size_offset(pc, &size, &offset))  in unwind_by_prologue()
141 	ip = (union loongarch_instruction *)(pc - offset);  in unwind_by_prologue()
142 	ip_end = (union loongarch_instruction *)pc;  in unwind_by_prologue()
154 	 * Can't find stack alloc action, PC may be in a leaf function. Only the  in unwind_by_prologue()
174 	/* Can't find save $ra action, PC may be in a leaf function, too. */  in unwind_by_prologue()
183 	state->pc = *(unsigned long *)(state->sp + frame_ra);  in unwind_by_prologue()
188 	state->pc = state->ra;  in unwind_by_prologue()
192 	return unwind_state_fixup(state) || __kernel_text_address(state->pc);  in unwind_by_prologue()
197 	unsigned long pc;  in next_frame()  local
206 			state->pc = unwind_graph_addr(state, state->pc, state->sp);  in next_frame()
212 			pc = regs->csr_era;  in next_frame()
214 			if (user_mode(regs) || !__kernel_text_address(pc))  in next_frame()
218 			state->pc = pc;  in next_frame()
249 	 * The current PC is not kernel text address, we cannot find its  in unwind_start()
253 	if (!__kernel_text_address(state->pc)) {  in unwind_start()