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diff --git a/sys/contrib/dev/acpica/changes.txt b/sys/contrib/dev/acpica/changes.txt index 1c2b1ed..0469af0 100644 --- a/sys/contrib/dev/acpica/changes.txt +++ b/sys/contrib/dev/acpica/changes.txt @@ -1,4 +1,223 @@ ---------------------------------------- +04 February 2015. Summary of changes for version 20150204: + +This release is available at https://acpica.org/downloads + +ACPICA kernel-resident subsystem: + +Updated all ACPICA copyrights and signons to 2014. Added the 2014 +copyright to all module headers and signons, including the standard Linux +header. This affects virtually every file in the ACPICA core subsystem, +iASL compiler, all ACPICA utilities, and the test suites. + +Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. +A raw gpe handling mechanism was created to allow better handling of GPE +storms that aren't easily managed by the normal handler. The raw handler +allows disabling/renabling of the the GPE so that interrupt storms can be +avoided in cases where events cannot be timely serviced. In this scenario, +handlers should use the AcpiSetGpe() API to disable/enable the GPE. This API +will leave the reference counts undisturbed, thereby preventing unintentional +clearing of the GPE when the intent in only to temporarily disable it. Raw +handlers allow enabling and disabling of a GPE by removing GPE register +locking. As such, raw handlers much provide their own locks while using +GPE API's to protect access to GPE data structures. +Lv Zheng + +Events: Always modify GPE registers under the GPE lock. +Applies GPE lock around AcpiFinishGpe() to protect access to GPE register +values. Reported as bug by joe.liu@apple.com. + +Unix makefiles: Separate option to disable optimizations and _FORTIFY_SOURCE. +This change removes the _FORTIFY_SOURCE flag from the NOOPT disable option and +creates a separate flag (NOFORTIFY) for this purpose. Some toolchains may +define _FORTIFY_SOURCE which leads redefined errors when building ACPICA. This +allows disabling the option without also having to disable optimazations. +David Box + + Current Release: + Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total + Debug Version: 199.2K Code, 82.4K Data, 281.6K Total + +---------------------------------------- +07 November 2014. Summary of changes for version 20141107: + +This release is available at https://acpica.org/downloads + +This release introduces and implements language extensions to ASL that +provide support for symbolic ("C-style") operators and expressions. These +language extensions are known collectively as ASL+. + + +1) iASL Compiler/Disassembler and Tools: + +Disassembler: Fixed a problem with disassembly of the UartSerialBus +macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. +Box. + +Disassembler: Fixed the Unicode macro support to add escape sequences. +All non-printable ASCII values are emitted as escape sequences, as well +as the standard escapes for quote and backslash. Ensures that the +disassembled macro can be correctly recompiled. + +iASL: Added Printf/Fprintf macros for formatted output. These macros are +translated to existing AML Concatenate and Store operations. Printf +writes to the ASL Debug object. Fprintf allows the specification of an +ASL name as the target. Only a single format specifier is required, %o, +since the AML interpreter dynamically converts objects to the required +type. David E. Box. + + (old) Store (Concatenate (Concatenate (Concatenate (Concatenate + (Concatenate (Concatenate (Concatenate ("", Arg0), + ": Unexpected value for "), Arg1), ", "), Arg2), + " at line "), Arg3), Debug) + + (new) Printf ("%o: Unexpected value for %o, %o at line %o", + Arg0, Arg1, Arg2, Arg3) + + (old) Store (Concatenate (Concatenate (Concatenate (Concatenate + ("", Arg1), ": "), Arg0), " Successful"), STR1) + + (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) + +iASL: Added debug options (-bp, -bt) to dynamically prune levels of the +ASL parse tree before the AML code is generated. This allows blocks of +ASL code to be removed in order to help locate and identify problem +devices and/or code. David E. Box. + +AcpiExec: Added support (-fi) for an optional namespace object +initialization file. This file specifies initial values for namespace +objects as necessary for debugging and testing different ASL code paths +that may be taken as a result of BIOS options. + + +2) Overview of symbolic operator support for ASL (ASL+) +------------------------------------------------------- + +As an extension to the ASL language, iASL implements support for symbolic +(C-style) operators for math and logical expressions. This can greatly +simplify ASL code as well as improve both readability and +maintainability. These language extensions can exist concurrently with +all legacy ASL code and expressions. + +The symbolic extensions are 100% compatible with existing AML +interpreters, since no new AML opcodes are created. To implement the +extensions, the iASL compiler transforms the symbolic expressions into +the legacy ASL/AML equivalents at compile time. + +Full symbolic expressions are supported, along with the standard C +precedence and associativity rules. + +Full disassembler support for the symbolic expressions is provided, and +creates an automatic migration path for existing ASL code to ASL+ code +via the disassembly process. By default, the disassembler now emits ASL+ +code with symbolic expressions. An option (-dl) is provided to force the +disassembler to emit legacy ASL code if desired. + +Below is the complete list of the currently supported symbolic operators +with examples. See the iASL User Guide for additional information. + + +ASL+ Syntax Legacy ASL Equivalent +----------- --------------------- + + // Math operators + +Z = X + Y Add (X, Y, Z) +Z = X - Y Subtract (X, Y, Z) +Z = X * Y Multiply (X, Y, Z) +Z = X / Y Divide (X, Y, , Z) +Z = X % Y Mod (X, Y, Z) +Z = X << Y ShiftLeft (X, Y, Z) +Z = X >> Y ShiftRight (X, Y, Z) +Z = X & Y And (X, Y, Z) +Z = X | Y Or (X, Y, Z) +Z = X ^ Y Xor (X, Y, Z) +Z = ~X Not (X, Z) +X++ Increment (X) +X-- Decrement (X) + + // Logical operators + +(X == Y) LEqual (X, Y) +(X != Y) LNotEqual (X, Y) +(X < Y) LLess (X, Y) +(X > Y) LGreater (X, Y) +(X <= Y) LLessEqual (X, Y) +(X >= Y) LGreaterEqual (X, Y) +(X && Y) LAnd (X, Y) +(X || Y) LOr (X, Y) +(!X) LNot (X) + + // Assignment and compound assignment operations + +X = Y Store (Y, X) +X += Y Add (X, Y, X) +X -= Y Subtract (X, Y, X) +X *= Y Multiply (X, Y, X) +X /= Y Divide (X, Y, , X) +X %= Y Mod (X, Y, X) +X <<= Y ShiftLeft (X, Y, X) +X >>= Y ShiftRight (X, Y, X) +X &= Y And (X, Y, X) +X |= Y Or (X, Y, X) +X ^= Y Xor (X, Y, X) + + +3) ASL+ Examples: +----------------- + +Legacy ASL: + If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( + And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, +0x03FB), + 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) + { + And (MEMB, 0xFFFFFFF0, SRMB) + Store (MEMB, Local2) + Store (PDBM, Local1) + And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) + Store (SRMB, MEMB) + Or (PDBM, 0x02, PDBM) + } + +ASL+ version: + If (((R510 & 0x03FB) == 0x02E0) || + ((R520 & 0x03FB) == 0x02E0) || + ((R530 & 0x03FB) == 0x02E0) || + ((R540 & 0x03FB) == 0x02E0)) + { + SRMB = (MEMB & 0xFFFFFFF0) + Local2 = MEMB + Local1 = PDBM + PDBM &= 0xFFFFFFFFFFFFFFF9 + MEMB = SRMB + PDBM |= 0x02 + } + +Legacy ASL: + Store (0x1234, Local1) + Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) + Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) + Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) + Store (Index (PKG1, 0x03), Local6) + Store (Add (Local3, Local2), Debug) + Add (Local1, 0x0F, Local2) + Add (Local1, Multiply (Local2, Local3), Local2) + Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) + +ASL+ version: + Local1 = 0x1234 + Local3 = (((Local1 + TEST) + 0x20) * Local2) + Local3 = (Local2 * ((Local1 + TEST) + 0x20)) + Local3 = (Local1 + (TEST + (0x20 * Local2))) + Local6 = Index (PKG1, 0x03) + Debug = (Local3 + Local2) + Local2 = (Local1 + 0x0F) + Local2 = (Local1 + (Local2 * Local3)) + Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) + + +---------------------------------------- 26 September 2014. Summary of changes for version 20140926: 1) ACPICA kernel-resident subsystem: |
