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diff --git a/documents/changes.txt b/documents/changes.txt index 1d3ec5aa0..c9eaa64f1 100644 --- a/documents/changes.txt +++ b/documents/changes.txt @@ -1,4 +1,66 @@ ---------------------------------------- +12 February 2016. Summary of changes for version 20160212: + +This release is available at https://acpica.org/downloads + +1) ACPICA kernel-resident subsystem: + +Implemented full support for the ACPI 6.1 specification (released in +January). This version of the specification is available at: +http://www.uefi.org/specifications + +Only a relatively small number of changes were required in ACPICA to +support ACPI 6.1, in these areas: +- New predefined names +- New _HID values +- A new subtable for HEST +- A few other header changes for new values + +Ensure \_SB_._INI is executed before any _REG methods are executed. There +appears to be existing BIOS code that relies on this behavior. Lv Zheng. + +Reverted a change made in version 20151218 which enabled method +invocations to be targets of various ASL operators (SuperName and Target +grammar elements). While the new behavior is supported by the ACPI +specification, other AML interpreters do not support this behavior and +never will. The ACPI specification will be updated for ACPI 6.2 to remove +this support. Therefore, the change was reverted to the original ACPICA +behavior. + +ACPICA now supports the GCC 6 compiler. + +Current Release: (Note: build changes increased sizes) + Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total + Debug Version: 200.4K Code, 82.0K Data, 282.4K Total +Previous Release: + Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total + Debug Version: 200.4K Code, 81.9K Data, 282.3K Total + + +2) iASL Compiler/Disassembler and Tools: + +Completed full support for the ACPI 6.0 External() AML opcode. The +compiler emits an external AML opcode for each ASL External statement. +This opcode is used by the disassembler to assist with the disassembly of +external control methods by specifying the required number of arguments +for the method. AML interpreters do not use this opcode. To ensure that +interpreters do not even see the opcode, a block of one or more external +opcodes is surrounded by an "If(0)" construct. As this feature becomes +commonly deployed in BIOS code, the ability of disassemblers to correctly +disassemble AML code will be greatly improved. David Box. + +iASL: Implemented support for an optional cross-reference output file. +The -lx option will create a the cross-reference file with the suffix +"xrf". Three different types of cross-reference are created in this file: +- List of object references made from within each control method +- Invocation (caller) list for each user-defined control method +- List of references to each non-method object in the namespace + +iASL: Method invocations as ASL Target operands are now disallowed and +flagged as errors in preparation for ACPI 6.2 (see the description of the +problem above). + +---------------------------------------- 8 January 2016. Summary of changes for version 20160108: 1) ACPICA kernel-resident subsystem: |