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ACPICA: Improve typechecking, both compile-time and runtime

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ACPICA commit 8d0f96e2a11a4ceabb2cae4b41e0ce1f4d3786b9

Adds much stricter typechecking in the iASL compiler, and
also adds some additional checking in the interpreter.

Link: https://github.com/acpica/acpica/commit/8d0f96e2
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore 2015-10-19 10:24:58 +08:00 committed by Rafael J. Wysocki
parent ca321d1ca6
commit a5922a1f73
11 changed files with 134 additions and 46 deletions
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8
drivers/acpi/acpica/aclocal.h
View File

@ -285,13 +285,17 @@ acpi_status(*acpi_internal_method) (struct acpi_walk_state * walk_state);
#define ACPI_BTYPE_BUFFER_FIELD 0x00002000
#define ACPI_BTYPE_DDB_HANDLE 0x00004000
#define ACPI_BTYPE_DEBUG_OBJECT 0x00008000
#define ACPI_BTYPE_REFERENCE 0x00010000
#define ACPI_BTYPE_REFERENCE_OBJECT 0x00010000 /* From Index(), ref_of(), etc (type6_opcodes) */
#define ACPI_BTYPE_RESOURCE 0x00020000
#define ACPI_BTYPE_NAMED_REFERENCE 0x00040000 /* Generic unresolved Name or Namepath */
#define ACPI_BTYPE_COMPUTE_DATA (ACPI_BTYPE_INTEGER | ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER)
#define ACPI_BTYPE_DATA (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_PACKAGE)
#define ACPI_BTYPE_DATA_REFERENCE (ACPI_BTYPE_DATA | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE)
/* Used by Copy, de_ref_of, Store, Printf, Fprintf */
#define ACPI_BTYPE_DATA_REFERENCE (ACPI_BTYPE_DATA | ACPI_BTYPE_REFERENCE_OBJECT | ACPI_BTYPE_DDB_HANDLE)
#define ACPI_BTYPE_DEVICE_OBJECTS (ACPI_BTYPE_DEVICE | ACPI_BTYPE_THERMAL | ACPI_BTYPE_PROCESSOR)
#define ACPI_BTYPE_OBJECTS_AND_REFS 0x0001FFFF /* ARG or LOCAL */
#define ACPI_BTYPE_ALL_OBJECTS 0x0000FFFF

4
drivers/acpi/acpica/acopcode.h
View File

@ -211,7 +211,7 @@
#define ARGI_ARG4 ARG_NONE
#define ARGI_ARG5 ARG_NONE
#define ARGI_ARG6 ARG_NONE
#define ARGI_BANK_FIELD_OP ARGI_INVALID_OPCODE
#define ARGI_BANK_FIELD_OP ARGI_LIST1 (ARGI_INTEGER)
#define ARGI_BIT_AND_OP ARGI_LIST3 (ARGI_INTEGER, ARGI_INTEGER, ARGI_TARGETREF)
#define ARGI_BIT_NAND_OP ARGI_LIST3 (ARGI_INTEGER, ARGI_INTEGER, ARGI_TARGETREF)
#define ARGI_BIT_NOR_OP ARGI_LIST3 (ARGI_INTEGER, ARGI_INTEGER, ARGI_TARGETREF)
@ -307,7 +307,7 @@
#define ARGI_SLEEP_OP ARGI_LIST1 (ARGI_INTEGER)
#define ARGI_STALL_OP ARGI_LIST1 (ARGI_INTEGER)
#define ARGI_STATICSTRING_OP ARGI_INVALID_OPCODE
#define ARGI_STORE_OP ARGI_LIST2 (ARGI_DATAREFOBJ, ARGI_TARGETREF)
#define ARGI_STORE_OP ARGI_LIST2 (ARGI_DATAREFOBJ, ARGI_STORE_TARGET)
#define ARGI_STRING_OP ARGI_INVALID_OPCODE
#define ARGI_SUBTRACT_OP ARGI_LIST3 (ARGI_INTEGER, ARGI_INTEGER, ARGI_TARGETREF)
#define ARGI_THERMAL_ZONE_OP ARGI_INVALID_OPCODE

11
drivers/acpi/acpica/amlcode.h
View File

@ -277,14 +277,15 @@
#define ARGI_TARGETREF 0x0F /* Target, subject to implicit conversion */
#define ARGI_FIXED_TARGET 0x10 /* Target, no implicit conversion */
#define ARGI_SIMPLE_TARGET 0x11 /* Name, Local, Arg -- no implicit conversion */
#define ARGI_STORE_TARGET 0x12 /* Target for store is TARGETREF + package objects */
/* Multiple/complex types */
#define ARGI_DATAOBJECT 0x12 /* Buffer, String, package or reference to a node - Used only by size_of operator */
#define ARGI_COMPLEXOBJ 0x13 /* Buffer, String, or package (Used by INDEX op only) */
#define ARGI_REF_OR_STRING 0x14 /* Reference or String (Used by DEREFOF op only) */
#define ARGI_REGION_OR_BUFFER 0x15 /* Used by LOAD op only */
#define ARGI_DATAREFOBJ 0x16
#define ARGI_DATAOBJECT 0x13 /* Buffer, String, package or reference to a node - Used only by size_of operator */
#define ARGI_COMPLEXOBJ 0x14 /* Buffer, String, or package (Used by INDEX op only) */
#define ARGI_REF_OR_STRING 0x15 /* Reference or String (Used by DEREFOF op only) */
#define ARGI_REGION_OR_BUFFER 0x16 /* Used by LOAD op only */
#define ARGI_DATAREFOBJ 0x17
/* Note: types above can expand to 0x1F maximum */

1
drivers/acpi/acpica/exconvrt.c
View File

@ -618,6 +618,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
break;
case ARGI_TARGETREF:
case ARGI_STORE_TARGET:
switch (destination_type) {
case ACPI_TYPE_INTEGER:

1
drivers/acpi/acpica/exresolv.c
View File

@ -209,7 +209,6 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
* (i.e., dereference the package index)
* Delete the ref object, increment the returned object
*/
acpi_ut_remove_reference(stack_desc);
acpi_ut_add_reference(obj_desc);
*stack_ptr = obj_desc;
} else {

2
drivers/acpi/acpica/exresop.c
View File

@ -307,6 +307,8 @@ acpi_ex_resolve_operands(u16 opcode,
case ARGI_TARGETREF: /* Allows implicit conversion rules before store */
case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
case ARGI_SIMPLE_TARGET: /* Name, Local, or arg - no implicit conversion */
case ARGI_STORE_TARGET:
/*
* Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
* A Namespace Node is OK as-is

120
drivers/acpi/acpica/exstore.c
View File

@ -137,7 +137,7 @@ acpi_ex_store(union acpi_operand_object *source_desc,
/* Destination is not a Reference object */
ACPI_ERROR((AE_INFO,
"Target is not a Reference or Constant object - %s [%p]",
"Target is not a Reference or Constant object - [%s] %p",
acpi_ut_get_object_type_name(dest_desc),
dest_desc));
@ -189,7 +189,7 @@ acpi_ex_store(union acpi_operand_object *source_desc,
* displayed and otherwise has no effect -- see ACPI Specification
*/
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"**** Write to Debug Object: Object %p %s ****:\n\n",
"**** Write to Debug Object: Object %p [%s] ****:\n\n",
source_desc,
acpi_ut_get_object_type_name(source_desc)));
@ -341,7 +341,7 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
/* All other types are invalid */
ACPI_ERROR((AE_INFO,
"Source must be Integer/Buffer/String type, not %s",
"Source must be type [Integer/Buffer/String], found [%s]",
acpi_ut_get_object_type_name(source_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
@ -352,8 +352,9 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
break;
default:
ACPI_ERROR((AE_INFO, "Target is not a Package or BufferField"));
status = AE_AML_OPERAND_TYPE;
ACPI_ERROR((AE_INFO,
"Target is not of type [Package/BufferField]"));
status = AE_AML_TARGET_TYPE;
break;
}
@ -373,20 +374,20 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
*
* DESCRIPTION: Store the object to the named object.
*
* The Assignment of an object to a named object is handled here
* The value passed in will replace the current value (if any)
* with the input value.
* The assignment of an object to a named object is handled here.
* The value passed in will replace the current value (if any)
* with the input value.
*
* When storing into an object the data is converted to the
* target object type then stored in the object. This means
* that the target object type (for an initialized target) will
* not be changed by a store operation. A copy_object can change
* the target type, however.
* When storing into an object the data is converted to the
* target object type then stored in the object. This means
* that the target object type (for an initialized target) will
* not be changed by a store operation. A copy_object can change
* the target type, however.
*
* The implicit_conversion flag is set to NO/FALSE only when
* storing to an arg_x -- as per the rules of the ACPI spec.
* The implicit_conversion flag is set to NO/FALSE only when
* storing to an arg_x -- as per the rules of the ACPI spec.
*
* Assumes parameters are already validated.
* Assumes parameters are already validated.
*
******************************************************************************/
@ -408,11 +409,75 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
target_type = acpi_ns_get_type(node);
target_desc = acpi_ns_get_attached_object(node);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p (%s) to node %p (%s)\n",
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p [%s] to node %p [%s]\n",
source_desc,
acpi_ut_get_object_type_name(source_desc), node,
acpi_ut_get_type_name(target_type)));
/* Only limited target types possible for everything except copy_object */
if (walk_state->opcode != AML_COPY_OP) {
/*
* Only copy_object allows all object types to be overwritten. For
* target_ref(s), there are restrictions on the object types that
* are allowed.
*
* Allowable operations/typing for Store:
*
* 1) Simple Store
* Integer --> Integer (Named/Local/Arg)
* String --> String (Named/Local/Arg)
* Buffer --> Buffer (Named/Local/Arg)
* Package --> Package (Named/Local/Arg)
*
* 2) Store with implicit conversion
* Integer --> String or Buffer (Named)
* String --> Integer or Buffer (Named)
* Buffer --> Integer or String (Named)
*/
switch (target_type) {
case ACPI_TYPE_PACKAGE:
/*
* Here, can only store a package to an existing package.
* Storing a package to a Local/Arg is OK, and handled
* elsewhere.
*/
if (walk_state->opcode == AML_STORE_OP) {
if (source_desc->common.type !=
ACPI_TYPE_PACKAGE) {
ACPI_ERROR((AE_INFO,
"Cannot assign type [%s] to [Package] "
"(source must be type Pkg)",
acpi_ut_get_object_type_name
(source_desc)));
return_ACPI_STATUS(AE_AML_TARGET_TYPE);
}
break;
}
/* Fallthrough */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_EVENT:
case ACPI_TYPE_MUTEX:
case ACPI_TYPE_REGION:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
ACPI_ERROR((AE_INFO,
"Target must be [Buffer/Integer/String/Reference], found [%s] (%4.4s)",
acpi_ut_get_type_name(node->type),
node->name.ascii));
return_ACPI_STATUS(AE_AML_TARGET_TYPE);
default:
break;
}
}
/*
* Resolve the source object to an actual value
* (If it is a reference object)
@ -425,13 +490,13 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
/* Do the actual store operation */
switch (target_type) {
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* The simple data types all support implicit source operand
* conversion before the store.
*/
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
if ((walk_state->opcode == AML_COPY_OP) || !implicit_conversion) {
/*
@ -467,7 +532,7 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
new_desc->common.type);
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Store %s into %s via Convert/Attach\n",
"Store type [%s] into [%s] via Convert/Attach\n",
acpi_ut_get_object_type_name
(source_desc),
acpi_ut_get_object_type_name
@ -491,15 +556,12 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
default:
/*
* No conversions for all other types. Directly store a copy of
* the source object. This is the ACPI spec-defined behavior for
* the copy_object operator.
* copy_object operator: No conversions for all other types.
* Instead, directly store a copy of the source object.
*
* NOTE: For the Store operator, this is a departure from the
* ACPI spec, which states "If conversion is impossible, abort
* the running control method". Instead, this code implements
* "If conversion is impossible, treat the Store operation as
* a CopyObject".
* This is the ACPI spec-defined behavior for the copy_object
* operator. (Note, for this default case, all normal
* Store/Target operations exited above with an error).
*/
status = acpi_ex_store_direct_to_node(source_desc, node,
walk_state);

5
drivers/acpi/acpica/exstoren.c
View File

@ -122,9 +122,10 @@ acpi_ex_resolve_object(union acpi_operand_object **source_desc_ptr,
/* Conversion successful but still not a valid type */
ACPI_ERROR((AE_INFO,
"Cannot assign type %s to %s (must be type Int/Str/Buf)",
"Cannot assign type [%s] to [%s] (must be type Int/Str/Buf)",
acpi_ut_get_object_type_name(source_desc),
acpi_ut_get_type_name(target_type)));
status = AE_AML_OPERAND_TYPE;
}
break;
@ -275,7 +276,7 @@ acpi_ex_store_object_to_object(union acpi_operand_object *source_desc,
/*
* All other types come here.
*/
ACPI_WARNING((AE_INFO, "Store into type %s not implemented",
ACPI_WARNING((AE_INFO, "Store into type [%s] not implemented",
acpi_ut_get_object_type_name(dest_desc)));
status = AE_NOT_IMPLEMENTED;

2
drivers/acpi/acpica/nspredef.c
View File

@ -226,7 +226,7 @@ acpi_ns_check_object_type(struct acpi_evaluate_info *info,
{
union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status = AE_OK;
char type_buffer[48]; /* Room for 5 types */
char type_buffer[96]; /* Room for 10 types */
/* A Namespace node should not get here, but make sure */

19
drivers/acpi/acpica/utdecode.c
View File

@ -232,12 +232,27 @@ char *acpi_ut_get_type_name(acpi_object_type type)
char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
{
ACPI_FUNCTION_TRACE(ut_get_object_type_name);
if (!obj_desc) {
return ("[NULL Object Descriptor]");
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Null Object Descriptor\n"));
return_PTR("[NULL Object Descriptor]");
}
return (acpi_ut_get_type_name(obj_desc->common.type));
/* These descriptor types share a common area */
if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) &&
(ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_NAMED)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Invalid object descriptor type: 0x%2.2X [%s] (%p)\n",
ACPI_GET_DESCRIPTOR_TYPE(obj_desc),
acpi_ut_get_descriptor_name(obj_desc),
obj_desc));
return_PTR("Invalid object");
}
return_PTR(acpi_ut_get_type_name(obj_desc->common.type));
}
/*******************************************************************************

7
include/acpi/acexcep.h
View File

@ -193,8 +193,9 @@ struct acpi_exception_info {
#define AE_AML_ILLEGAL_ADDRESS EXCEP_AML (0x0020)
#define AE_AML_INFINITE_LOOP EXCEP_AML (0x0021)
#define AE_AML_UNINITIALIZED_NODE EXCEP_AML (0x0022)
#define AE_AML_TARGET_TYPE EXCEP_AML (0x0023)
#define AE_CODE_AML_MAX 0x0022
#define AE_CODE_AML_MAX 0x0023
/*
* Internal exceptions used for control
@ -358,7 +359,9 @@ static const struct acpi_exception_info acpi_gbl_exception_names_aml[] = {
EXCEP_TXT("AE_AML_INFINITE_LOOP",
"An apparent infinite AML While loop, method was aborted"),
EXCEP_TXT("AE_AML_UNINITIALIZED_NODE",
"A namespace node is uninitialized or unresolved")
"A namespace node is uninitialized or unresolved"),
EXCEP_TXT("AE_AML_TARGET_TYPE",
"A target operand of an incorrect type was encountered")
};
static const struct acpi_exception_info acpi_gbl_exception_names_ctrl[] = {