/****************************************************************************** * * Module Name: psargs - Parse AML opcode arguments * *****************************************************************************/ /* * Copyright (C) 2000 - 2007, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. */ #include <acpi/acpi.h>#include <acpi/acparser.h>#include <acpi/amlcode.h>#include <acpi/acnamesp.h>#include <acpi/acdispat.h> #define _COMPONENT ACPI_PARSERACPI_MODULE_NAME("psargs") /* Local prototypes */static u32acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state); static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state *parser_state); /******************************************************************************* * * FUNCTION: acpi_ps_get_next_package_length * * PARAMETERS: parser_state - Current parser state object * * RETURN: Decoded package length. On completion, the AML pointer points * past the length byte or bytes. * * DESCRIPTION: Decode and return a package length field. * Note: Largest package length is 28 bits, from ACPI specification * ******************************************************************************/ static u32acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state){ u8 *aml = parser_state->aml; u32 package_length = 0; acpi_native_uint byte_count; u8 byte_zero_mask = 0x3F; /* Default [0:5] */ ACPI_FUNCTION_TRACE(ps_get_next_package_length); /* * Byte 0 bits [6:7] contain the number of additional bytes * used to encode the package length, either 0,1,2, or 3 */ byte_count = (aml[0] >> 6); parser_state->aml += (byte_count + 1); /* Get bytes 3, 2, 1 as needed */ while (byte_count) { /* * Final bit positions for the package length bytes: * Byte3->[20:27] * Byte2->[12:19] * Byte1->[04:11] * Byte0->[00:03] */ package_length |= (aml[byte_count] << ((byte_count << 3) - 4)); byte_zero_mask = 0x0F; /* Use bits [0:3] of byte 0 */ byte_count--; } /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */ package_length |= (aml[0] & byte_zero_mask); return_UINT32(package_length);} /******************************************************************************* * * FUNCTION: acpi_ps_get_next_package_end * * PARAMETERS: parser_state - Current parser state object * * RETURN: Pointer to end-of-package +1 * * DESCRIPTION: Get next package length and return a pointer past the end of * the package. Consumes the package length field * ******************************************************************************/ u8 *acpi_ps_get_next_package_end(struct acpi_parse_state *parser_state){ u8 *start = parser_state->aml; u32 package_length; ACPI_FUNCTION_TRACE(ps_get_next_package_end); /* Function below updates parser_state->Aml */ package_length = acpi_ps_get_next_package_length(parser_state); return_PTR(start + package_length); /* end of package */} /******************************************************************************* * * FUNCTION: acpi_ps_get_next_namestring * * PARAMETERS: parser_state - Current parser state object * * RETURN: Pointer to the start of the name string (pointer points into * the AML. * * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name * prefix characters. Set parser state to point past the string. * (Name is consumed from the AML.) * ******************************************************************************/ char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state){ u8 *start = parser_state->aml; u8 *end = parser_state->aml; ACPI_FUNCTION_TRACE(ps_get_next_namestring); /* Point past any namestring prefix characters (backslash or carat) */ while (acpi_ps_is_prefix_char(*end)) { end++; } /* Decode the path prefix character */ switch (*end) { case 0: /* null_name */ if (end == start) { start = NULL; } end++; break; case AML_DUAL_NAME_PREFIX: /* Two name segments */ end += 1 + (2 * ACPI_NAME_SIZE); break; case AML_MULTI_NAME_PREFIX_OP: /* Multiple name segments, 4 chars each, count in next byte */ end += 2 + (*(end + 1) * ACPI_NAME_SIZE); break; default: /* Single name segment */ end += ACPI_NAME_SIZE; break; } parser_state->aml = end; return_PTR((char *)start);} /******************************************************************************* * * FUNCTION: acpi_ps_get_next_namepath * * PARAMETERS: parser_state - Current parser state object * Arg - Where the namepath will be stored * arg_count - If the namepath points to a control method * the method's argument is returned here. * possible_method_call - Whether the namepath can possibly be the * start of a method call * * RETURN: Status * * DESCRIPTION: Get next name (if method call, return # of required args). * Names are looked up in the internal namespace to determine * if the name represents a control method. If a method * is found, the number of arguments to the method is returned. * This information is critical for parsing to continue correctly. * ******************************************************************************/ acpi_statusacpi_ps_get_next_namepath(struct acpi_walk_state *walk_state, struct acpi_parse_state *parser_state, union acpi_parse_object *arg, u8 possible_method_call){ char *path; union acpi_parse_object *name_op; acpi_status status; union acpi_operand_object *method_desc; struct acpi_namespace_node *node; union acpi_generic_state scope_info; ACPI_FUNCTION_TRACE(ps_get_next_namepath); path = acpi_ps_get_next_namestring(parser_state); acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP); /* Null path case is allowed, just exit */ if (!path) { arg->common.value.name = path; return_ACPI_STATUS(AE_OK); } /* Setup search scope info */ scope_info.scope.node = NULL; node = parser_state->start_node; if (node) { scope_info.scope.node = node; } /* * Lookup the name in the internal namespace. We don't want to add * anything new to the namespace here, however, so we use MODE_EXECUTE. * Allow searching of the parent tree, but don't open a new scope - * we just want to lookup the object (must be mode EXECUTE to perform * the upsearch) */ status = acpi_ns_lookup(&scope_info, path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &node); /* * If this name is a control method invocation, we must * setup the method call */ if (ACPI_SUCCESS(status) && possible_method_call && (node->type == ACPI_TYPE_METHOD)) { /* This name is actually a control method invocation */ method_desc = acpi_ns_get_attached_object(node); ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Control Method - %p Desc %p Path=%p\n", node, method_desc, path)); name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP); if (!name_op) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Change Arg into a METHOD CALL and attach name to it */ acpi_ps_init_op(arg, AML_INT_METHODCALL_OP); name_op->common.value.name = path; /* Point METHODCALL/NAME to the METHOD Node */ name_op->common.node = node; acpi_ps_append_arg(arg, name_op); if (!method_desc) { ACPI_ERROR((AE_INFO, "Control Method %p has no attached object", node)); return_ACPI_STATUS(AE_AML_INTERNAL); } ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Control Method - %p Args %X\n", node, method_desc->method.param_count)); /* Get the number of arguments to expect */ walk_state->arg_count = method_desc->method.param_count; return_ACPI_STATUS(AE_OK); } /* * Special handling if the name was not found during the lookup - * some not_found cases are allowed */ if (status == AE_NOT_FOUND) { /* 1) not_found is ok during load pass 1/2 (allow forward references) */ if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) != ACPI_PARSE_EXECUTE) { status = AE_OK; } /* 2) not_found during a cond_ref_of(x) is ok by definition */ else if (walk_state->op->common.aml_opcode == AML_COND_REF_OF_OP) { status = AE_OK; } /* * 3) not_found while building a Package is ok at this point, we * may flag as an error later if slack mode is not enabled. * (Some ASL code depends on allowing this behavior) */ else if ((arg->common.parent) && ((arg->common.parent->common.aml_opcode == AML_PACKAGE_OP) || (arg->common.parent->common.aml_opcode == AML_VAR_PACKAGE_OP))) { status = AE_OK; } } /* Final exception check (may have been changed from code above) */ if (ACPI_FAILURE(status)) { ACPI_ERROR_NAMESPACE(path, status); if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) { /* Report a control method execution error */ status = acpi_ds_method_error(status, walk_state); } } /* Save the namepath */ arg->common.value.name = path; return_ACPI_STATUS(status);} /******************************************************************************* * * FUNCTION: acpi_ps_get_next_simple_arg * * PARAMETERS: parser_state - Current parser state object * arg_type - The argument type (AML_*_ARG) * Arg - Where the argument is returned * * RETURN: None * * DESCRIPTION: Get the next simple argument (constant, string, or namestring) * ******************************************************************************/ voidacpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state, u32 arg_type, union acpi_parse_object *arg){ u32 length; u16 opcode; u8 *aml = parser_state->aml; ACPI_FUNCTION_TRACE_U32(ps_get_next_simple_arg, arg_type); switch (arg_type) { case ARGP_BYTEDATA: /* Get 1 byte from the AML stream */ opcode = AML_BYTE_OP; arg->common.value.integer = (acpi_integer) * aml; length = 1; break; case ARGP_WORDDATA: /* Get 2 bytes from the AML stream */ opcode = AML_WORD_OP; ACPI_MOVE_16_TO_64(&arg->common.value.integer, aml); length = 2; break; case ARGP_DWORDDATA: /* Get 4 bytes from the AML stream */ opcode = AML_DWORD_OP; ACPI_MOVE_32_TO_64(&arg->common.value.integer, aml); length = 4; break; case ARGP_QWORDDATA: /* Get 8 bytes from the AML stream */ opcode = AML_QWORD_OP; ACPI_MOVE_64_TO_64(&arg->common.value.integer, aml); length = 8; break; case ARGP_CHARLIST: /* Get a pointer to the string, point past the string */ opcode = AML_STRING_OP; arg->common.value.string = ACPI_CAST_PTR(char, aml); /* Find the null terminator */ length = 0; while (aml[length]) { length++; } length++; break; case ARGP_NAME: case ARGP_NAMESTRING: acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP); arg->common.value.name = acpi_ps_get_next_namestring(parser_state); return_VOID; default: ACPI_ERROR((AE_INFO, "Invalid ArgType %X", arg_type)); return_VOID; } acpi_ps_init_op(arg, opcode); parser_state->aml += length; return_VOID;} /******************************************************************************* * * FUNCTION: acpi_ps_get_next_field * * PARAMETERS: parser_state - Current parser state object * * RETURN: A newly allocated FIELD op * * DESCRIPTION: Get next field (named_field, reserved_field, or access_field) * ******************************************************************************/ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state *parser_state){ u32 aml_offset = (u32) ACPI_PTR_DIFF(parser_state->aml, parser_state->aml_start); union acpi_parse_object *field; u16 opcode; u32 name; ACPI_FUNCTION_TRACE(ps_get_next_field); /* Determine field type */ switch (ACPI_GET8(parser_state->aml)) { default: opcode = AML_INT_NAMEDFIELD_OP; break; case 0x00:Lines 1–500 of 728. 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/****************************************************************************** * * Module Name: psargs - Parse AML opcode arguments * *****************************************************************************/ /* * Copyright (C) 2000 - 2007, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. */ #include <acpi/acpi.h> #include <acpi/acparser.h> #include <acpi/amlcode.h> #include <acpi/acnamesp.h> #include <acpi/acdispat.h> #define _COMPONENT ACPI_PARSER ACPI_MODULE_NAME("psargs") /* Local prototypes */ static u32 acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state); static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state *parser_state); /******************************************************************************* * * FUNCTION: acpi_ps_get_next_package_length * * PARAMETERS: parser_state - Current parser state object * * RETURN: Decoded package length. On completion, the AML pointer points * past the length byte or bytes. * * DESCRIPTION: Decode and return a package length field. * Note: Largest package length is 28 bits, from ACPI specification * ******************************************************************************/ static u32 acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state) { u8 *aml = parser_state->aml; u32 package_length = 0; acpi_native_uint byte_count; u8 byte_zero_mask = 0x3F; /* Default [0:5] */ ACPI_FUNCTION_TRACE(ps_get_next_package_length); /* * Byte 0 bits [6:7] contain the number of additional bytes * used to encode the package length, either 0,1,2, or 3 */ byte_count = (aml[0] >> 6); parser_state->aml += (byte_count + 1); /* Get bytes 3, 2, 1 as needed */ while (byte_count) { /* * Final bit positions for the package length bytes: * Byte3->[20:27] * Byte2->[12:19] * Byte1->[04:11] * Byte0->[00:03] */ package_length |= (aml[byte_count] << ((byte_count << 3) - 4)); byte_zero_mask = 0x0F; /* Use bits [0:3] of byte 0 */ byte_count--; } /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */ package_length |= (aml[0] & byte_zero_mask); return_UINT32(package_length); } /******************************************************************************* * * FUNCTION: acpi_ps_get_next_package_end * * PARAMETERS: parser_state - Current parser state object * * RETURN: Pointer to end-of-package +1 * * DESCRIPTION: Get next package length and return a pointer past the end of * the package. Consumes the package length field * ******************************************************************************/ u8 *acpi_ps_get_next_package_end(struct acpi_parse_state *parser_state) { u8 *start = parser_state->aml; u32 package_length; ACPI_FUNCTION_TRACE(ps_get_next_package_end); /* Function below updates parser_state->Aml */ package_length = acpi_ps_get_next_package_length(parser_state); return_PTR(start + package_length); /* end of package */ } /******************************************************************************* * * FUNCTION: acpi_ps_get_next_namestring * * PARAMETERS: parser_state - Current parser state object * * RETURN: Pointer to the start of the name string (pointer points into * the AML. * * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name * prefix characters. Set parser state to point past the string. * (Name is consumed from the AML.) * ******************************************************************************/ char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state) { u8 *start = parser_state->aml; u8 *end = parser_state->aml; ACPI_FUNCTION_TRACE(ps_get_next_namestring); /* Point past any namestring prefix characters (backslash or carat) */ while (acpi_ps_is_prefix_char(*end)) { end++; } /* Decode the path prefix character */ switch (*end) { case 0: /* null_name */ if (end == start) { start = NULL; } end++; break; case AML_DUAL_NAME_PREFIX: /* Two name segments */ end += 1 + (2 * ACPI_NAME_SIZE); break; case AML_MULTI_NAME_PREFIX_OP: /* Multiple name segments, 4 chars each, count in next byte */ end += 2 + (*(end + 1) * ACPI_NAME_SIZE); break; default: /* Single name segment */ end += ACPI_NAME_SIZE; break; } parser_state->aml = end; return_PTR((char *)start); } /******************************************************************************* * * FUNCTION: acpi_ps_get_next_namepath * * PARAMETERS: parser_state - Current parser state object * Arg - Where the namepath will be stored * arg_count - If the namepath points to a control method * the method's argument is returned here. * possible_method_call - Whether the namepath can possibly be the * start of a method call * * RETURN: Status * * DESCRIPTION: Get next name (if method call, return # of required args). * Names are looked up in the internal namespace to determine * if the name represents a control method. If a method * is found, the number of arguments to the method is returned. * This information is critical for parsing to continue correctly. * ******************************************************************************/ acpi_status acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state, struct acpi_parse_state *parser_state, union acpi_parse_object *arg, u8 possible_method_call) { char *path; union acpi_parse_object *name_op; acpi_status status; union acpi_operand_object *method_desc; struct acpi_namespace_node *node; union acpi_generic_state scope_info; ACPI_FUNCTION_TRACE(ps_get_next_namepath); path = acpi_ps_get_next_namestring(parser_state); acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP); /* Null path case is allowed, just exit */ if (!path) { arg->common.value.name = path; return_ACPI_STATUS(AE_OK); } /* Setup search scope info */ scope_info.scope.node = NULL; node = parser_state->start_node; if (node) { scope_info.scope.node = node; } /* * Lookup the name in the internal namespace. We don't want to add * anything new to the namespace here, however, so we use MODE_EXECUTE. * Allow searching of the parent tree, but don't open a new scope - * we just want to lookup the object (must be mode EXECUTE to perform * the upsearch) */ status = acpi_ns_lookup(&scope_info, path, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &node); /* * If this name is a control method invocation, we must * setup the method call */ if (ACPI_SUCCESS(status) && possible_method_call && (node->type == ACPI_TYPE_METHOD)) { /* This name is actually a control method invocation */ method_desc = acpi_ns_get_attached_object(node); ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Control Method - %p Desc %p Path=%p\n", node, method_desc, path)); name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP); if (!name_op) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Change Arg into a METHOD CALL and attach name to it */ acpi_ps_init_op(arg, AML_INT_METHODCALL_OP); name_op->common.value.name = path; /* Point METHODCALL/NAME to the METHOD Node */ name_op->common.node = node; acpi_ps_append_arg(arg, name_op); if (!method_desc) { ACPI_ERROR((AE_INFO, "Control Method %p has no attached object", node)); return_ACPI_STATUS(AE_AML_INTERNAL); } ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Control Method - %p Args %X\n", node, method_desc->method.param_count)); /* Get the number of arguments to expect */ walk_state->arg_count = method_desc->method.param_count; return_ACPI_STATUS(AE_OK); } /* * Special handling if the name was not found during the lookup - * some not_found cases are allowed */ if (status == AE_NOT_FOUND) { /* 1) not_found is ok during load pass 1/2 (allow forward references) */ if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) != ACPI_PARSE_EXECUTE) { status = AE_OK; } /* 2) not_found during a cond_ref_of(x) is ok by definition */ else if (walk_state->op->common.aml_opcode == AML_COND_REF_OF_OP) { status = AE_OK; } /* * 3) not_found while building a Package is ok at this point, we * may flag as an error later if slack mode is not enabled. * (Some ASL code depends on allowing this behavior) */ else if ((arg->common.parent) && ((arg->common.parent->common.aml_opcode == AML_PACKAGE_OP) || (arg->common.parent->common.aml_opcode == AML_VAR_PACKAGE_OP))) { status = AE_OK; } } /* Final exception check (may have been changed from code above) */ if (ACPI_FAILURE(status)) { ACPI_ERROR_NAMESPACE(path, status); if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) { /* Report a control method execution error */ status = acpi_ds_method_error(status, walk_state); } } /* Save the namepath */ arg->common.value.name = path; return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ps_get_next_simple_arg * * PARAMETERS: parser_state - Current parser state object * arg_type - The argument type (AML_*_ARG) * Arg - Where the argument is returned * * RETURN: None * * DESCRIPTION: Get the next simple argument (constant, string, or namestring) * ******************************************************************************/ void acpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state, u32 arg_type, union acpi_parse_object *arg) { u32 length; u16 opcode; u8 *aml = parser_state->aml; ACPI_FUNCTION_TRACE_U32(ps_get_next_simple_arg, arg_type); switch (arg_type) { case ARGP_BYTEDATA: /* Get 1 byte from the AML stream */ opcode = AML_BYTE_OP; arg->common.value.integer = (acpi_integer) * aml; length = 1; break; case ARGP_WORDDATA: /* Get 2 bytes from the AML stream */ opcode = AML_WORD_OP; ACPI_MOVE_16_TO_64(&arg->common.value.integer, aml); length = 2; break; case ARGP_DWORDDATA: /* Get 4 bytes from the AML stream */ opcode = AML_DWORD_OP; ACPI_MOVE_32_TO_64(&arg->common.value.integer, aml); length = 4; break; case ARGP_QWORDDATA: /* Get 8 bytes from the AML stream */ opcode = AML_QWORD_OP; ACPI_MOVE_64_TO_64(&arg->common.value.integer, aml); length = 8; break; case ARGP_CHARLIST: /* Get a pointer to the string, point past the string */ opcode = AML_STRING_OP; arg->common.value.string = ACPI_CAST_PTR(char, aml); /* Find the null terminator */ length = 0; while (aml[length]) { length++; } length++; break; case ARGP_NAME: case ARGP_NAMESTRING: acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP); arg->common.value.name = acpi_ps_get_next_namestring(parser_state); return_VOID; default: ACPI_ERROR((AE_INFO, "Invalid ArgType %X", arg_type)); return_VOID; } acpi_ps_init_op(arg, opcode); parser_state->aml += length; return_VOID; } /******************************************************************************* * * FUNCTION: acpi_ps_get_next_field * * PARAMETERS: parser_state - Current parser state object * * RETURN: A newly allocated FIELD op * * DESCRIPTION: Get next field (named_field, reserved_field, or access_field) * ******************************************************************************/ static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state *parser_state) { u32 aml_offset = (u32) ACPI_PTR_DIFF(parser_state->aml, parser_state->aml_start); union acpi_parse_object *field; u16 opcode; u32 name; ACPI_FUNCTION_TRACE(ps_get_next_field); /* Determine field type */ switch (ACPI_GET8(parser_state->aml)) { default: opcode = AML_INT_NAMEDFIELD_OP; break; case 0x00: