parser_state->aml_start); 
parser_state->aml_start); 
acpi_ps_parse_loop (	struct acpi_walk_state          *walk_state){	acpi_status                     status = AE_OK;	union acpi_parse_object         *op = NULL;     /* current op */	union acpi_parse_object         *arg = NULL;	union acpi_parse_object         *pre_op = NULL;	struct acpi_parse_state         *parser_state;	u8                              *aml_op_start = NULL;	ACPI_FUNCTION_TRACE_PTR ("ps_parse_loop", walk_state);	if (walk_state->descending_callback == NULL) {		return_ACPI_STATUS (AE_BAD_PARAMETER);	}	parser_state = &walk_state->parser_state;	walk_state->arg_types = 0;#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))	if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) {		/* We are restarting a preempted control method */		if (acpi_ps_has_completed_scope (parser_state)) {			/*			 * We must check if a predicate to an IF or WHILE statement			 * was just completed			 */			if ((parser_state->scope->parse_scope.op) &&			   ((parser_state->scope->parse_scope.op->common.aml_opcode == AML_IF_OP) ||				(parser_state->scope->parse_scope.op->common.aml_opcode == AML_WHILE_OP)) &&				(walk_state->control_state) &&				(walk_state->control_state->common.state ==					ACPI_CONTROL_PREDICATE_EXECUTING)) {				/*				 * A predicate was just completed, get the value of the				 * predicate and branch based on that value				 */				walk_state->op = NULL;				status = acpi_ds_get_predicate_value (walk_state, ACPI_TO_POINTER (TRUE));				if (ACPI_FAILURE (status) &&					((status & AE_CODE_MASK) != AE_CODE_CONTROL)) {					if (status == AE_AML_NO_RETURN_VALUE) {						ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,							"Invoked method did not return a value, %s\n",							acpi_format_exception (status)));					}					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "get_predicate Failed, %s\n",						acpi_format_exception (status)));					return_ACPI_STATUS (status);				}				status = acpi_ps_next_parse_state (walk_state, op, status);			}			acpi_ps_pop_scope (parser_state, &op,				&walk_state->arg_types, &walk_state->arg_count);			ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op));		}		else if (walk_state->prev_op) {			/* We were in the middle of an op */			op = walk_state->prev_op;			walk_state->arg_types = walk_state->prev_arg_types;		}	}#endif	/*	 * Iterative parsing loop, while there is more aml to process:	 */	while ((parser_state->aml < parser_state->aml_end) || (op)) {		aml_op_start = parser_state->aml;		if (!op) {			/* Get the next opcode from the AML stream */			walk_state->aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml,					   parser_state->aml_start);			walk_state->opcode   = acpi_ps_peek_opcode (parser_state);			/*			 * First cut to determine what we have found:			 * 1) A valid AML opcode			 * 2) A name string			 * 3) An unknown/invalid opcode			 */			walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode);			switch (walk_state->op_info->class) {			case AML_CLASS_ASCII:			case AML_CLASS_PREFIX:				/*				 * Starts with a valid prefix or ASCII char, this is a name				 * string.  Convert the bare name string to a namepath.				 */				walk_state->opcode = AML_INT_NAMEPATH_OP;				walk_state->arg_types = ARGP_NAMESTRING;				break;			case AML_CLASS_UNKNOWN:				/* The opcode is unrecognized.  Just skip unknown opcodes */				ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,					"Found unknown opcode %X at AML address %p offset %X, ignoring\n",					walk_state->opcode, parser_state->aml, walk_state->aml_offset));				ACPI_DUMP_BUFFER (parser_state->aml, 128);				/* Assume one-byte bad opcode */				parser_state->aml++;				continue;			default:				/* Found opcode info, this is a normal opcode */				parser_state->aml += acpi_ps_get_opcode_size (walk_state->opcode);				walk_state->arg_types = walk_state->op_info->parse_args;				break;			}			/* Create Op structure and append to parent's argument list */			if (walk_state->op_info->flags & AML_NAMED) {				/* Allocate a new pre_op if necessary */				if (!pre_op) {					pre_op = acpi_ps_alloc_op (walk_state->opcode);					if (!pre_op) {						status = AE_NO_MEMORY;						goto close_this_op;					}				}				pre_op->common.value.arg = NULL;				pre_op->common.aml_opcode = walk_state->opcode;				/*				 * Get and append arguments until we find the node that contains				 * the name (the type ARGP_NAME).				 */				while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) &&					  (GET_CURRENT_ARG_TYPE (walk_state->arg_types) != ARGP_NAME)) {					status = acpi_ps_get_next_arg (walk_state, parser_state,							 GET_CURRENT_ARG_TYPE (walk_state->arg_types), &arg);					if (ACPI_FAILURE (status)) {						goto close_this_op;					}					acpi_ps_append_arg (pre_op, arg);					INCREMENT_ARG_LIST (walk_state->arg_types);				}				/* Make sure that we found a NAME and didn't run out of arguments */				if (!GET_CURRENT_ARG_TYPE (walk_state->arg_types)) {					status = AE_AML_NO_OPERAND;					goto close_this_op;				}				/* We know that this arg is a name, move to next arg */				INCREMENT_ARG_LIST (walk_state->arg_types);				/*				 * Find the object.  This will either insert the object into				 * the namespace or simply look it up				 */				walk_state->op = NULL;				status = walk_state->descending_callback (walk_state, &op);				if (ACPI_FAILURE (status)) {					ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "During name lookup/catalog, %s\n",							acpi_format_exception (status)));					goto close_this_op;				}				if (op == NULL) {					continue;				}				status = acpi_ps_next_parse_state (walk_state, op, status);				if (status == AE_CTRL_PENDING) {					status = AE_OK;					goto close_this_op;				}				if (ACPI_FAILURE (status)) {					goto close_this_op;				}				acpi_ps_append_arg (op, pre_op->common.value.arg);				acpi_gbl_depth++;				if (op->common.aml_opcode == AML_REGION_OP) {					/*					 * Defer final parsing of an operation_region body,					 * because we don't have enough info in the first pass					 * to parse it correctly (i.e., there may be method					 * calls within the term_arg elements of the body.)					 *					 * However, we must continue parsing because					 * the opregion is not a standalone package --					 * we don't know where the end is at this point.					 *					 * (Length is unknown until parse of the body complete)					 */					op->named.data    = aml_op_start;					op->named.length  = 0;				}			}			else {				/* Not a named opcode, just allocate Op and append to parent */				walk_state->op_info = acpi_ps_get_opcode_info (walk_state->opcode);				op = acpi_ps_alloc_op (walk_state->opcode);				if (!op) {					status = AE_NO_MEMORY;					goto close_this_op;				}				if (walk_state->op_info->flags & AML_CREATE) {					/*					 * Backup to beginning of create_xXXfield declaration					 * body_length is unknown until we parse the body					 */					op->named.data    = aml_op_start;					op->named.length  = 0;				}				acpi_ps_append_arg (acpi_ps_get_parent_scope (parser_state), op);				if ((walk_state->descending_callback != NULL)) {					/*					 * Find the object.  This will either insert the object into					 * the namespace or simply look it up					 */					walk_state->op = op;					status = walk_state->descending_callback (walk_state, &op);					status = acpi_ps_next_parse_state (walk_state, op, status);					if (status == AE_CTRL_PENDING) {						status = AE_OK;						goto close_this_op;					}					if (ACPI_FAILURE (status)) {						goto close_this_op;					}				}			}			op->common.aml_offset = walk_state->aml_offset;			if (walk_state->op_info) {				ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,					"Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n",					 (u32) op->common.aml_opcode, walk_state->op_info->name,					 op, parser_state->aml, op->common.aml_offset));			}		}		/* Start arg_count at zero because we don't know if there are any args yet */		walk_state->arg_count = 0;		if (walk_state->arg_types) /* Are there any arguments that must be processed? */ {			/* Get arguments */			switch (op->common.aml_opcode) {			case AML_BYTE_OP:       /* AML_BYTEDATA_ARG */			case AML_WORD_OP:       /* AML_WORDDATA_ARG */			case AML_DWORD_OP:      /* AML_DWORDATA_ARG */			case AML_QWORD_OP:      /* AML_QWORDATA_ARG */			case AML_STRING_OP:     /* AML_ASCIICHARLIST_ARG */				/* Fill in constant or string argument directly */				acpi_ps_get_next_simple_arg (parser_state,					GET_CURRENT_ARG_TYPE (walk_state->arg_types), op);				break;			case AML_INT_NAMEPATH_OP:   /* AML_NAMESTRING_ARG */				status = acpi_ps_get_next_namepath (walk_state, parser_state, op, 1);				if (ACPI_FAILURE (status)) {					goto close_this_op;				}				walk_state->arg_types = 0;				break;			default:				/* Op is not a constant or string, append each argument to the Op */				while (GET_CURRENT_ARG_TYPE (walk_state->arg_types) &&						!walk_state->arg_count) {					walk_state->aml_offset = (u32) ACPI_PTR_DIFF (parser_state->aml,							   parser_state->aml_start);					status = acpi_ps_get_next_arg (walk_state, parser_state,							 GET_CURRENT_ARG_TYPE (walk_state->arg_types), &arg);					if (ACPI_FAILURE (status)) {						goto close_this_op;					}					if (arg) {						arg->common.aml_offset = walk_state->aml_offset;						acpi_ps_append_arg (op, arg);					}					INCREMENT_ARG_LIST (walk_state->arg_types);				}				/* Special processing for certain opcodes */				switch (op->common.aml_opcode) {				case AML_METHOD_OP:					/*					 * Skip parsing of control method					 * because we don't have enough info in the first pass					 * to parse it correctly.					 *					 * Save the length and address of the body					 */					op->named.data   = parser_state->aml;					op->named.length = (u32) (parser_state->pkg_end - parser_state->aml);					/* Skip body of method */					parser_state->aml   = parser_state->pkg_end;					walk_state->arg_count = 0;					break;				case AML_BUFFER_OP:				case AML_PACKAGE_OP:				case AML_VAR_PACKAGE_OP:					if ((op->common.parent) &&						(op->common.parent->common.aml_opcode == AML_NAME_OP) &&						(walk_state->descending_callback != acpi_ds_exec_begin_op)) {						/*						 * Skip parsing of Buffers and Packages						 * because we don't have enough info in the first pass						 * to parse them correctly.						 */						op->named.data   = aml_op_start;						op->named.length = (u32) (parser_state->pkg_end - aml_op_start);						/* Skip body */						parser_state->aml   = parser_state->pkg_end;						walk_state->arg_count = 0;					}					break;				case AML_WHILE_OP:					if (walk_state->control_state) {						walk_state->control_state->control.package_end = parser_state->pkg_end;					}					break;				default:					/* No action for all other opcodes */					break;				}				break;			}		}		/* Check for arguments that need to be processed */		if (walk_state->arg_count) {			/* There are arguments (complex ones), push Op and prepare for argument */			status = acpi_ps_push_scope (parser_state, op,					 walk_state->arg_types, walk_state->arg_count);			if (ACPI_FAILURE (status)) {				goto close_this_op;			}			op = NULL;			continue;		}		/* All arguments have been processed -- Op is complete, prepare for next */		walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);		if (walk_state->op_info->flags & AML_NAMED) {			if (acpi_gbl_depth) {				acpi_gbl_depth--;			}			if (op->common.aml_opcode == AML_REGION_OP) {				/*				 * Skip parsing of control method or opregion body,				 * because we don't have enough info in the first pass				 * to parse them correctly.				 *				 * Completed parsing an op_region declaration, we now				 * know the length.				 */				op->named.length = (u32) (parser_state->aml - op->named.data);			}		}		if (walk_state->op_info->flags & AML_CREATE) {			/*			 * Backup to beginning of create_xXXfield declaration (1 for			 * Opcode)			 *			 * body_length is unknown until we parse the body			 */			op->named.length = (u32) (parser_state->aml - op->named.data);		}		/* This op complete, notify the dispatcher */		if (walk_state->ascending_callback != NULL) {			walk_state->op    = op;			walk_state->opcode = op->common.aml_opcode;			status = walk_state->ascending_callback (walk_state);			status = acpi_ps_next_parse_state (walk_state, op, status);			if (status == AE_CTRL_PENDING) {				status = AE_OK;				goto close_this_op;			}		}close_this_op:		/*		 * Finished one argument of the containing scope		 */		parser_state->scope->parse_scope.arg_count--;		/* Close this Op (will result in parse subtree deletion) */		acpi_ps_complete_this_op (walk_state, op);		op = NULL;		if (pre_op) {			acpi_ps_free_op (pre_op);			pre_op = NULL;		}		switch (status) {		case AE_OK:			break;		case AE_CTRL_TRANSFER:			/*			 * We are about to transfer to a called method.			 */			walk_state->prev_op = op;			walk_state->prev_arg_types = walk_state->arg_types;			return_ACPI_STATUS (status);		case AE_CTRL_END:			acpi_ps_pop_scope (parser_state, &op,				&walk_state->arg_types, &walk_state->arg_count);			if (op) {				walk_state->op    = op;				walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);				walk_state->opcode = op->common.aml_opcode;				status = walk_state->ascending_callback (walk_state);				status = acpi_ps_next_parse_state (walk_state, op, status);				acpi_ps_complete_this_op (walk_state, op);				op = NULL;			}			status = AE_OK;			break;		case AE_CTRL_BREAK:		case AE_CTRL_CONTINUE:			/* Pop off scopes until we find the While */			while (!op || (op->common.aml_opcode != AML_WHILE_OP)) {				acpi_ps_pop_scope (parser_state, &op,					&walk_state->arg_types, &walk_state->arg_count);			}			/* Close this iteration of the While loop */			walk_state->op    = op;			walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);			walk_state->opcode = op->common.aml_opcode;			status = walk_state->ascending_callback (walk_state);			status = acpi_ps_next_parse_state (walk_state, op, status);			acpi_ps_complete_this_op (walk_state, op);			op = NULL;			status = AE_OK;			break;		case AE_CTRL_TERMINATE:			status = AE_OK;			/* Clean up */			do {				if (op) {					acpi_ps_complete_this_op (walk_state, op);				}				acpi_ps_pop_scope (parser_state, &op,					&walk_state->arg_types, &walk_state->arg_count);			} while (op);			return_ACPI_STATUS (status);		default:  /* All other non-AE_OK status */			do {				if (op) {					acpi_ps_complete_this_op (walk_state, op);				}				acpi_ps_pop_scope (parser_state, &op,					&walk_state->arg_types, &walk_state->arg_count);			} while (op);			/*			 * TBD: Cleanup parse ops on error			 */#if 0			if (op == NULL) {				acpi_ps_pop_scope (parser_state, &op,					&walk_state->arg_types, &walk_state->arg_count);			}#endif			walk_state->prev_op = op;			walk_state->prev_arg_types = walk_state->arg_types;			return_ACPI_STATUS (status);		}		/* This scope complete? */		if (acpi_ps_has_completed_scope (parser_state)) {			acpi_ps_pop_scope (parser_state, &op,				&walk_state->arg_types, &walk_state->arg_count);			ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op));		}		else {			op = NULL;		}	} /* while parser_state->Aml */	/*	 * Complete the last Op (if not completed), and clear the scope stack.	 * It is easily possible to end an AML "package" with an unbounded number	 * of open scopes (such as when several ASL blocks are closed with	 * sequential closing braces).  We want to terminate each one cleanly.	 */	ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", op));	do {		if (op) {			if (walk_state->ascending_callback != NULL) {				walk_state->op    = op;				walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);				walk_state->opcode = op->common.aml_opcode;				status = walk_state->ascending_callback (walk_state);				status = acpi_ps_next_parse_state (walk_state, op, status);				if (status == AE_CTRL_PENDING) {					status = AE_OK;					goto close_this_op;				}				if (status == AE_CTRL_TERMINATE) {					status = AE_OK;					/* Clean up */					do {						if (op) {							acpi_ps_complete_this_op (walk_state, op);						}						acpi_ps_pop_scope (parser_state, &op,							&walk_state->arg_types, &walk_state->arg_count);					} while (op);					return_ACPI_STATUS (status);				}				else if (ACPI_FAILURE (status)) {					acpi_ps_complete_this_op (walk_state, op);					return_ACPI_STATUS (status);				}			}			acpi_ps_complete_this_op (walk_state, op);		}		acpi_ps_pop_scope (parser_state, &op, &walk_state->arg_types,			&walk_state->arg_count);	} while (op);	return_ACPI_STATUS (status);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/44f6c01242da4e162f28d8e1216a8c7a91174605/psparse.c/clean/drivers/acpi/parser/psparse.c