182 static bool unwind_exec_read_byte(struct unwind_state_arm32 *state,  in unwind_exec_read_byte()  argument
187 	if (!copy_in(&insn, (void *)state->insn, sizeof(insn), kernel_stack))  in unwind_exec_read_byte()
191 	*ret_insn = (insn >> (state->byte * 8)) & 0xff;  in unwind_exec_read_byte()
194 	if (state->byte == 0) {  in unwind_exec_read_byte()
195 		state->byte = 3;  in unwind_exec_read_byte()
196 		state->insn += sizeof(uint32_t);  in unwind_exec_read_byte()
197 		state->entries--;  in unwind_exec_read_byte()
199 		state->byte--;  in unwind_exec_read_byte()
221 static bool unwind_exec_insn(struct unwind_state_arm32 *state,  in unwind_exec_insn()  argument
226 	ulong vsp = state->registers[SP];  in unwind_exec_insn()
230 	if (!unwind_exec_read_byte(state, &insn, kernel_stack))  in unwind_exec_insn()
234 		state->registers[SP] += ((insn & INSN_VSP_SIZE_MASK) << 2) + 4;  in unwind_exec_insn()
237 		state->registers[SP] -= ((insn & INSN_VSP_SIZE_MASK) << 2) + 4;  in unwind_exec_insn()
244 		if (!unwind_exec_read_byte(state, &mask, kernel_stack))  in unwind_exec_insn()
258 				if (!pop_vsp(&state->registers[reg], &vsp,  in unwind_exec_insn()
261 				state->update_mask |= 1 << reg;  in unwind_exec_insn()
273 		state->registers[SP] =  in unwind_exec_insn()
274 		    state->registers[insn & INSN_STD_DATA_MASK];  in unwind_exec_insn()
287 			if (!pop_vsp(&state->registers[reg], &vsp,  in unwind_exec_insn()
290 			state->update_mask |= 1 << reg;  in unwind_exec_insn()
295 			if (!pop_vsp(&state->registers[14], &vsp, kernel_stack,  in unwind_exec_insn()
302 		state->entries = 0;  in unwind_exec_insn()
308 		if (!unwind_exec_read_byte(state, &mask, kernel_stack))  in unwind_exec_insn()
319 				if (!pop_vsp(&state->registers[reg], &vsp,  in unwind_exec_insn()
322 				state->update_mask |= 1 << reg;  in unwind_exec_insn()
330 		if (!unwind_exec_read_byte(state, &uleb128, kernel_stack))  in unwind_exec_insn()
333 		state->registers[SP] += 0x204 + (uleb128 << 2);  in unwind_exec_insn()
342 		state->registers[SP] = vsp;  in unwind_exec_insn()
348 static bool unwind_tab(struct unwind_state_arm32 *state, bool kernel_stack,  in unwind_tab()  argument
355 	state->registers[PC] = 0;  in unwind_tab()
357 	if (!copy_in(&insn, (void *)state->insn, sizeof(insn), kernel_stack)) {  in unwind_tab()
358 		printf("Bad insn addr %p", (void *)state->insn);  in unwind_tab()
366 		state->byte = 2;  in unwind_tab()
367 		state->entries = 1;  in unwind_tab()
369 		state->byte = 1;  in unwind_tab()
370 		state->entries = ((insn >> 16) & 0xFF) + 1;  in unwind_tab()
376 	while (state->entries > 0) {  in unwind_tab()
377 		if (!unwind_exec_insn(state, kernel_stack, stack, stack_size))  in unwind_tab()
384 	if (state->registers[PC] == 0) {  in unwind_tab()
385 		state->registers[PC] = state->registers[LR];  in unwind_tab()
390 		if (state->start_pc != state->registers[PC])  in unwind_tab()
391 			state->update_mask |= 1 << PC;  in unwind_tab()
394 		if (state->registers[PC] == 0)  in unwind_tab()
401 bool unwind_stack_arm32(struct unwind_state_arm32 *state, ulong exidx,  in unwind_stack_arm32()  argument
412 	state->update_mask = 0;  in unwind_stack_arm32()
415 	state->start_pc = state->registers[PC];  in unwind_stack_arm32()
418 	index = find_index(state->start_pc, exidx, exidx_sz);  in unwind_stack_arm32()
424 			state->insn = (ulong)&index->insn;  in unwind_stack_arm32()
427 			state->insn = (ulong)&index->insn +  in unwind_stack_arm32()
432 		finished = unwind_tab(state, kernel_stack, stack, stack_size);  in unwind_stack_arm32()
477 void print_stack_arm32(struct unwind_state_arm32 *state,  in print_stack_arm32()  argument
491 		pc = (ulong)state->registers[PC] - gd->reloc_off;  in print_stack_arm32()
492 		lr = (ulong)state->registers[LR] - gd->reloc_off;  in print_stack_arm32()
494 		pc = (ulong)state->registers[PC];  in print_stack_arm32()
495 		lr = (ulong)state->registers[LR];  in print_stack_arm32()
505 			pc = (ulong)state->registers[PC] - gd->reloc_off;  in print_stack_arm32()
507 			pc = (ulong)state->registers[PC];  in print_stack_arm32()
510 	} while (unwind_stack_arm32(state, exidx, exidx_sz,  in print_stack_arm32()
520 	struct unwind_state_arm32 state;  in dump_core_stack()  local
529 		state.registers[i] = 0;  in dump_core_stack()
530 	state.update_mask = 0;  in dump_core_stack()
531 	state.start_pc = 0;  in dump_core_stack()
532 	state.entries = 0;  in dump_core_stack()
533 	state.insn = 0;  in dump_core_stack()
534 	state.byte = 0;  in dump_core_stack()
537 	state.registers[7] = regs->ARM_r7;  in dump_core_stack()
539 	state.registers[FP] = regs->ARM_ip;  in dump_core_stack()
540 	state.registers[SP] = regs->ARM_sp;  in dump_core_stack()
541 	state.registers[LR] = regs->ARM_lr;  in dump_core_stack()
542 	state.registers[PC] = regs->ARM_pc;  in dump_core_stack()
544 	print_stack_arm32(&state, exidx, exidx_sz,  in dump_core_stack()