From 6570276e1fe9f148a89974de4efc7bba142cd060 Mon Sep 17 00:00:00 2001 From: Robert Moore Date: Fri, 18 Dec 2015 09:29:52 -0800 Subject: Logfile: Changes for version 20151218 Version 20151218 --- documents/changes.txt | 157 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) (limited to 'documents') diff --git a/documents/changes.txt b/documents/changes.txt index f9958564f..f9f941e6e 100644 --- a/documents/changes.txt +++ b/documents/changes.txt @@ -1,3 +1,160 @@ +---------------------------------------- +18 December 2015. Summary of changes for version 20151218: + +This release is available at https://acpica.org/downloads + + +1) ACPICA kernel-resident subsystem: + +Implemented per-AML-table execution of "module-level code" as individual +ACPI tables are loaded into the namespace during ACPICA initialization. +In other words, any module-level code within an AML table is executed +immediately after the table is loaded, instead of batched and executed +after all of the tables have been loaded. This provides compatibility +with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, +David Box. + +To fully support the feature above, the default operation region handlers +for the SystemMemory, SystemIO, and PCI_Config address spaces are now +installed before any ACPI tables are loaded. This enables module-level +code to access these address spaces during the table load and module- +level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David +Box. + +Implemented several changes to the internal _REG support in conjunction +with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples +utilities for the changes above. Although these tools were changed, host +operating systems that simply use the default handlers for SystemMemory, +SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. + +For example, in the code below, DEV1 is conditionally added to the +namespace by the DSDT via module-level code that accesses an operation +region. The SSDT references DEV1 via the Scope operator. DEV1 must be +created immediately after the DSDT is loaded in order for the SSDT to +successfully reference DEV1. Previously, this code would cause an +AE_NOT_EXIST exception during the load of the SSDT. Now, this code is +fully supported by ACPICA. + + DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) + { + OperationRegion (OPR1, SystemMemory, 0x400, 32) + Field (OPR1, AnyAcc, NoLock, Preserve) + { + FLD1, 1 + } + If (FLD1) + { + Device (\DEV1) + { + } + } + } + DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) + { + External (\DEV1, DeviceObj) + Scope (\DEV1) + { + } + } + +Fixed an AML interpreter problem where control method invocations were +not handled correctly when the invocation was itself a SuperName argument +to another ASL operator. In these cases, the method was not invoked. +ACPICA BZ 1002. Affects the following ASL operators that have a SuperName +argument: + Store + Acquire, Wait + CondRefOf, RefOf + Decrement, Increment + Load, Unload + Notify + Signal, Release, Reset + SizeOf + +Implemented automatic String-to-ObjectReference conversion support for +packages returned by predefined names (such as _DEP). A common BIOS error +is to add double quotes around an ObjectReference namepath, which turns +the reference into an unexpected string object. This support detects the +problem and corrects it before the package is returned to the caller that +invoked the method. Lv Zheng. + +Implemented extensions to the Concatenate operator. Concatenate now +accepts any type of object, it is not restricted to simply +Integer/String/Buffer. For objects other than these 3 basic data types, +the argument is treated as a string containing the name of the object +type. This expands the utility of Concatenate and the Printf/Fprintf +macros. ACPICA BZ 1222. + +Cleaned up the output of the ASL Debug object. The timer() value is now +optional and no longer emitted by default. Also, the basic data types of +Integer/String/Buffer are simply emitted as their values, without a data +type string -- since the data type is obvious from the output. ACPICA BZ +1221. + +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: 102.6K Code, 28.4K Data, 131.0K Total + Debug Version: 200.3K Code, 81.9K Data, 282.3K Total + Previous Release: + Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total + Debug Version: 199.6K Code, 81.8K Data, 281.4K Total + + +2) iASL Compiler/Disassembler and Tools: + +iASL: Fixed some issues with the ASL Include() operator. This operator +was incorrectly defined in the iASL parser rules, causing a new scope to +be opened for the code within the include file. This could lead to +several issues, including allowing ASL code that is technically illegal +and not supported by AML interpreters. Note, this does not affect the +related #include preprocessor operator. ACPICA BZ 1212. + +iASL/Disassembler: Implemented support for the ASL ElseIf operator. This +operator is essentially an ASL macro since there is no AML opcode +associated with it. The code emitted by the iASL compiler for ElseIf is +an Else opcode followed immediately by an If opcode. The disassembler +will now emit an ElseIf if it finds an Else immediately followed by an +If. This simplifies the decoded ASL, especially for deeply nested +If..Else and large Switch constructs. Thus, the disassembled code more +closely follows the original source ASL. ACPICA BZ 1211. Example: + + Old disassembly: + Else + { + If (Arg0 == 0x02) + { + Local0 = 0x05 + } + } + + New disassembly: + ElseIf (Arg0 == 0x02) + { + Local0 = 0x05 + } + +AcpiExec: Added support for the new module level code behavior and the +early region installation. This required a small change to the +initialization, since AcpiExec must install its own operation region +handlers. + +AcpiExec: Added support to make the debug object timer optional. Default +is timer disabled. This cleans up the debug object output -- the timer +data is rarely used. + +AcpiExec: Multiple ACPI tables are now loaded in the order that they +appear on the command line. This can be important when there are +interdependencies/references between the tables. + +iASL/Templates. Add support to generate template files with multiple +SSDTs within a single output file. Also added ommand line support to +specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ +1223, 1225. + ---------------------------------------- 24 November 2015. Summary of changes for version 20151124: -- cgit v1.2.1