33 	unsigned long a1 = regs->areg[1];  in xtensa_backtrace_user()  local
42 	frame.sp = a1;  in xtensa_backtrace_user()
77 			a1 = regs->areg[index * 4 + 1];  in xtensa_backtrace_user()
80 			frame.sp = a1;  in xtensa_backtrace_user()
99 		if (!access_ok(&SPILL_SLOT(a1, 0), 8))  in xtensa_backtrace_user()
102 		if (__get_user(a0, &SPILL_SLOT(a1, 0)) ||  in xtensa_backtrace_user()
103 		    __get_user(a1, &SPILL_SLOT(a1, 1)))  in xtensa_backtrace_user()
107 		frame.sp = a1;  in xtensa_backtrace_user()
124 	unsigned long a1 = regs->areg[1];  in xtensa_backtrace_kernel()  local
126 	sp_start = a1 & ~(THREAD_SIZE - 1);  in xtensa_backtrace_kernel()
135 	while (a1 > sp_start && a1 < sp_end && depth--) {  in xtensa_backtrace_kernel()
139 		frame.sp = a1;  in xtensa_backtrace_kernel()
145 			regs = (struct pt_regs *)a1;  in xtensa_backtrace_kernel()
153 			a1 = regs->areg[1];  in xtensa_backtrace_kernel()
157 		sp_start = a1;  in xtensa_backtrace_kernel()
160 		a0 = SPILL_SLOT(a1, 0);  in xtensa_backtrace_kernel()
161 		a1 = SPILL_SLOT(a1, 1);  in xtensa_backtrace_kernel()
172 	unsigned long a0, a1;  in walk_stackframe()  local
175 	a1 = (unsigned long)sp;  in walk_stackframe()
176 	sp_end = ALIGN(a1, THREAD_SIZE);  in walk_stackframe()
180 	while (a1 < sp_end) {  in walk_stackframe()
183 		sp = (unsigned long *)a1;  in walk_stackframe()
185 		a0 = SPILL_SLOT(a1, 0);  in walk_stackframe()
186 		a1 = SPILL_SLOT(a1, 1);  in walk_stackframe()
188 		if (a1 <= (unsigned long)sp)  in walk_stackframe()
191 		frame.pc = MAKE_PC_FROM_RA(a0, a1);  in walk_stackframe()
192 		frame.sp = a1;  in walk_stackframe()