33 	unsigned long a1 = regs->areg[1];  in xtensa_backtrace_user()  local
42 	frame.sp = a1;  in xtensa_backtrace_user()
72 			a1 = regs->areg[index * 4 + 1];  in xtensa_backtrace_user()
75 			frame.sp = a1;  in xtensa_backtrace_user()
94 		if (!access_ok(VERIFY_READ, &SPILL_SLOT(a1, 0), 8))  in xtensa_backtrace_user()
97 		if (__get_user(a0, &SPILL_SLOT(a1, 0)) ||  in xtensa_backtrace_user()
98 		    __get_user(a1, &SPILL_SLOT(a1, 1)))  in xtensa_backtrace_user()
102 		frame.sp = a1;  in xtensa_backtrace_user()
119 	unsigned long a1 = regs->areg[1];  in xtensa_backtrace_kernel()  local
121 	sp_start = a1 & ~(THREAD_SIZE - 1);  in xtensa_backtrace_kernel()
130 	while (a1 > sp_start && a1 < sp_end && depth--) {  in xtensa_backtrace_kernel()
134 		frame.sp = a1;  in xtensa_backtrace_kernel()
140 			regs = (struct pt_regs *)a1;  in xtensa_backtrace_kernel()
148 			a1 = regs->areg[1];  in xtensa_backtrace_kernel()
152 		sp_start = a1;  in xtensa_backtrace_kernel()
155 		a0 = SPILL_SLOT(a1, 0);  in xtensa_backtrace_kernel()
156 		a1 = SPILL_SLOT(a1, 1);  in xtensa_backtrace_kernel()
167 	unsigned long a0, a1;  in walk_stackframe()  local
170 	a1 = (unsigned long)sp;  in walk_stackframe()
171 	sp_end = ALIGN(a1, THREAD_SIZE);  in walk_stackframe()
175 	while (a1 < sp_end) {  in walk_stackframe()
178 		sp = (unsigned long *)a1;  in walk_stackframe()
180 		a0 = SPILL_SLOT(a1, 0);  in walk_stackframe()
181 		a1 = SPILL_SLOT(a1, 1);  in walk_stackframe()
183 		if (a1 <= (unsigned long)sp)  in walk_stackframe()
186 		frame.pc = MAKE_PC_FROM_RA(a0, a1);  in walk_stackframe()
187 		frame.sp = a1;  in walk_stackframe()