Logfile: Changes for version 20140627.

Version 20140627.

documents/changes.txt

@@ -1,3 +1,104 @@
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+27 June 2014. Summary of changes for version 20140627:
+
+1) ACPICA kernel-resident subsystem:
+
+Formatted Output: Implemented local versions of standard formatted output 
+utilities such as printf, etc. Over time, it has been discovered that 
+there are in fact many portability issues with printf, and the addition 
+of this feature will fix/prevent these issues once and for all. Some 
+known issues are summarized below:
+
+1) Output of 64-bit values is not portable. For example, UINT64 is %ull 
+for the Linux kernel and is %uI64 for some MSVC versions.
+2) Invoking printf consistently in a manner that is portable across both 
+32-bit and 64-bit platforms is difficult at best in many situations.
+3) The output format for pointers varies from system to system (leading 
+zeros especially), and leads to inconsistent output from ACPICA across 
+platforms.
+4) Certain platform-specific printf formats may conflict with ACPICA use.
+5) If there is no local C library available, ACPICA now has local support 
+for printf.
+
+-- To address these printf issues in a complete manner, ACPICA now 
+directly implements a small subset of printf format specifiers, only 
+those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
+
+Implemented support for ACPICA generation within the EFI environment. 
+Initially, the AcpiDump utility is supported in the UEFI shell 
+environment. Lv Zheng.
+
+Added a new external interface, AcpiLogError, to improve ACPICA 
+portability. This allows the host to redirect error messages from the 
+ACPICA utilities. Lv Zheng.
+
+Added and deployed new OSL file I/O interfaces to improve ACPICA 
+portability:
+  AcpiOsOpenFile
+  AcpiOsCloseFile
+  AcpiOsReadFile
+  AcpiOsWriteFile
+  AcpiOsGetFileOffset
+  AcpiOsSetFileOffset
+There are C library implementations of these functions in the new file 
+service_layers/oslibcfs.c -- however, the functions can be implemented by 
+the local host in any way necessary. Lv Zheng.
+
+Implemented a mechanism to disable/enable ACPI table checksum validation 
+at runtime. This can be useful when loading tables very early during OS 
+initialization when it may not be possible to map the entire table in 
+order to compute the checksum. Lv Zheng.
+
+Fixed a buffer allocation issue for the Generic Serial Bus support. 
+Originally, a fixed buffer length was used. This change allows for 
+variable-length buffers based upon the protocol indicated by the field 
+access attributes. Reported by Lan Tianyu. Lv Zheng.
+
+Fixed a problem where an object detached from a namespace node was not 
+properly terminated/cleared and could cause a circular list problem if 
+reattached. ACPICA BZ 1063. David Box.
+
+Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
+
+Fixed a possible memory leak in an error return path within the function 
+AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
+
+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:  98.7K Code, 27.2K Data, 125.9K Total
+    Debug Version:     191.7K Code, 79.6K Data, 271.3K Total
+  Previous Release:
+    Non-Debug Version:  96.8K Code, 27.2K Data, 124.0K Total
+    Debug Version:     189.5K Code, 79.7K Data, 269.2K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: Add dump of ASCII equivalent text within a comment at the 
+end of each line of the output for the Buffer() ASL operator.
+
+AcpiDump: Miscellaneous changes:
+  Fixed repetitive table dump in -n mode.
+  For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 
+the ACPI 2.0 GUID fails.
+
+iASL: Fixed a problem where the compiler could fault if incorrectly given 
+an acpidump output file as input. ACPICA BZ 1088. David Box.
+
+AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 
+they are invoked without any arguments.
+
+Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 
+1086. Colin Ian King.
+
+Disassembler: Cleaned up a block of code that extracts a parent Op 
+object. Added a comment that explains that the parent is guaranteed to be 
+valid in this case. ACPICA BZ 1069.
+
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 24 April 2014. Summary of changes for version 20140424: