62 static struct dwarf_reg *dwarf_frame_alloc_reg(struct dwarf_frame *frame,  in dwarf_frame_alloc_reg()  argument
81 	list_add(&reg->link, &frame->reg_list);  in dwarf_frame_alloc_reg()
86 static void dwarf_frame_free_regs(struct dwarf_frame *frame)  in dwarf_frame_free_regs()  argument
90 	list_for_each_entry_safe(reg, n, &frame->reg_list, link) {  in dwarf_frame_free_regs()
104 static struct dwarf_reg *dwarf_frame_reg(struct dwarf_frame *frame,  in dwarf_frame_reg()  argument
109 	list_for_each_entry(reg, &frame->reg_list, link) {  in dwarf_frame_reg()
400 				   struct dwarf_frame *frame,  in dwarf_cfa_execute_insns()  argument
410 	while (current_insn < insn_end && frame->pc <= pc) {  in dwarf_cfa_execute_insns()
421 			frame->pc += delta;  in dwarf_cfa_execute_insns()
429 			regp = dwarf_frame_alloc_reg(frame, reg);  in dwarf_cfa_execute_insns()
449 			frame->pc += delta * cie->code_alignment_factor;  in dwarf_cfa_execute_insns()
454 			frame->pc += delta * cie->code_alignment_factor;  in dwarf_cfa_execute_insns()
459 			frame->pc += delta * cie->code_alignment_factor;  in dwarf_cfa_execute_insns()
475 			regp = dwarf_frame_alloc_reg(frame, reg);  in dwarf_cfa_execute_insns()
480 						   &frame->cfa_register);  in dwarf_cfa_execute_insns()
483 						   &frame->cfa_offset);  in dwarf_cfa_execute_insns()
486 			frame->flags |= DWARF_FRAME_CFA_REG_OFFSET;  in dwarf_cfa_execute_insns()
490 						   &frame->cfa_register);  in dwarf_cfa_execute_insns()
492 			frame->flags |= DWARF_FRAME_CFA_REG_OFFSET;  in dwarf_cfa_execute_insns()
497 			frame->cfa_offset = offset;  in dwarf_cfa_execute_insns()
503 			frame->cfa_expr = current_insn;  in dwarf_cfa_execute_insns()
504 			frame->cfa_expr_len = expr_len;  in dwarf_cfa_execute_insns()
507 			frame->flags |= DWARF_FRAME_CFA_REG_EXP;  in dwarf_cfa_execute_insns()
515 			regp = dwarf_frame_alloc_reg(frame, reg);  in dwarf_cfa_execute_insns()
524 			regp = dwarf_frame_alloc_reg(frame, reg);  in dwarf_cfa_execute_insns()
538 			regp = dwarf_frame_alloc_reg(frame, reg);  in dwarf_cfa_execute_insns()
556 void dwarf_free_frame(struct dwarf_frame *frame)  in dwarf_free_frame()  argument
558 	dwarf_frame_free_regs(frame);  in dwarf_free_frame()
559 	mempool_free(frame, dwarf_frame_pool);  in dwarf_free_frame()
577 	struct dwarf_frame *frame;  in dwarf_unwind_stack()  local
623 	frame = mempool_alloc(dwarf_frame_pool, GFP_ATOMIC);  in dwarf_unwind_stack()
624 	if (!frame) {  in dwarf_unwind_stack()
629 	INIT_LIST_HEAD(&frame->reg_list);  in dwarf_unwind_stack()
630 	frame->flags = 0;  in dwarf_unwind_stack()
631 	frame->prev = prev;  in dwarf_unwind_stack()
632 	frame->return_addr = 0;  in dwarf_unwind_stack()
656 	frame->pc = fde->initial_location;  in dwarf_unwind_stack()
661 				frame, pc);  in dwarf_unwind_stack()
665 				fde, frame, pc);  in dwarf_unwind_stack()
668 	switch (frame->flags) {  in dwarf_unwind_stack()
671 			reg = dwarf_frame_reg(prev, frame->cfa_register);  in dwarf_unwind_stack()
676 			frame->cfa = __raw_readl(addr);  in dwarf_unwind_stack()
686 			frame->cfa = dwarf_read_arch_reg(frame->cfa_register);  in dwarf_unwind_stack()
689 		frame->cfa += frame->cfa_offset;  in dwarf_unwind_stack()
695 	reg = dwarf_frame_reg(frame, DWARF_ARCH_RA_REG);  in dwarf_unwind_stack()
707 	addr = frame->cfa + reg->addr;  in dwarf_unwind_stack()
708 	frame->return_addr = __raw_readl(addr);  in dwarf_unwind_stack()
726 		frame->return_addr = 0;  in dwarf_unwind_stack()
728 	return frame;  in dwarf_unwind_stack()
731 	dwarf_free_frame(frame);  in dwarf_unwind_stack()
963 	struct dwarf_frame *frame, *_frame;  in dwarf_unwinder_dump()  local
970 		frame = dwarf_unwind_stack(return_addr, _frame);  in dwarf_unwinder_dump()
975 		_frame = frame;  in dwarf_unwinder_dump()
977 		if (!frame || !frame->return_addr)  in dwarf_unwinder_dump()
980 		return_addr = frame->return_addr;  in dwarf_unwinder_dump()
984 	if (frame)  in dwarf_unwinder_dump()
985 		dwarf_free_frame(frame);  in dwarf_unwinder_dump()