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diff --git a/changes.txt b/changes.txt index dd8b8067f191..04bd6e95fce4 100644 --- a/changes.txt +++ b/changes.txt @@ -1,4 +1,91 @@ ---------------------------------------- +18 April 2013. Summary of changes for version 20130418: + +This release is available at https://acpica.org/downloads + + +1) ACPICA kernel-resident subsystem: + +Fixed a possible buffer overrun during some rare but specific field unit +read operations. This overrun can only happen if the DSDT version is 1 -- +meaning that all AML integers are 32 bits -- and the field length is +between 33 and 55 bits long. During the read, an internal buffer object is +created for the field unit because the field is larger than an integer (32 +bits). However, in this case, the buffer will be incorrectly written +beyond the end because the buffer length is less than the internal minimum +of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes +long, but a full 8 bytes will be written. + +Updated the Embedded Controller "orphan" _REG method support. This refers +to _REG methods under the EC device that have no corresponding operation +region. This is allowed by the ACPI specification. This update removes a +dependency on the existence an ECDT table. It will execute an orphan _REG +method as long as the operation region handler for the EC is installed at +the EC device node and not the namespace root. Rui Zhang (original +update), Bob Moore (update/integrate). + +Implemented run-time argument typechecking for all predefined ACPI names +(_STA, _BIF, etc.) This change performs object typechecking on all +incoming arguments for all predefined names executed via +AcpiEvaluateObject. This ensures that ACPI-related device drivers are +passing correct object types as well as the correct number of arguments +(therefore identifying any issues immediately). Also, the ASL/namespace +definition of the predefined name is checked against the ACPI +specification for the proper argument count. Adds one new file, +nsarguments.c + +Changed an exception code for the ASL UnLoad() operator. Changed the +exception code for the case where the input DdbHandle is invalid, from +AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. + +Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the +global makefile. The use of this flag causes compiler errors on earlier +versions of GCC, so it has been removed for compatibility. + +Miscellaneous cleanup: +1) Removed some unused/obsolete macros +2) Fixed a possible memory leak in the _OSI support +3) Removed an unused variable in the predefined name support +4) Windows OSL: remove obsolete reference to a memory list field + +Example Code and Data Size: These are the sizes for the OS-independent +acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The +debug version of the code includes the debug output trace mechanism and +has a much larger code and data size. + + Current Release: + Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total + Debug Version: 183.0K Code, 76.0K Data, 259.0K Total + Previous Release: + Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total + Debug Version: 183.5K Code, 76.6K Data, 260.1K Total + + +2) iASL Compiler/Disassembler and Tools: + +AcpiExec: Added installation of a handler for the SystemCMOS address +space. This prevents control method abort if a method accesses this space. + +AcpiExec: Added support for multiple EC devices, and now install EC +operation region handler(s) at the actual EC device instead of the +namespace root. This reflects the typical behavior of host operating +systems. + +AcpiExec: Updated to ensure that all operation region handlers are +installed before the _REG methods are executed. This prevents a _REG +method from aborting if it accesses an address space has no handler. +AcpiExec installs a handler for every possible address space. + +Debugger: Enhanced the "handlers" command to display non-root handlers. +This change enhances the handlers command to display handlers associated +with individual devices throughout the namespace, in addition to the +currently supported display of handlers associated with the root namespace +node. + +ASL Test Suite: Several test suite errors have been identified and +resolved, reducing the total error count during execution. Chao Guan. + +---------------------------------------- 28 March 2013. Summary of changes for version 20130328: 1) ACPICA kernel-resident subsystem: |