GNUH8 v11.01

1st March 2011

KPIT Cummins Infosystems Limited is releasing the GNUH8 v11.01, 
a cross compiler tool for Renesas H8 micro-controllers.

SALIENT FEATURES:

1. The GNUH8 v11.01 toolchain is based on gcc-4.5.2 [released], binutils-2.21
   [released], newlib-1.18.0 [released] and gdb-7.2.50 [snapshot dated 7th
   December 2010].   
 
2. The latest patches are applied to gcc, binutils and newlib sources. 
   Please visit the following link for information on the patches applied
   to the GNUH8 toolchain: 
   http://www.kpitgnutools.com/phpmyfaq/index.php?aktion=artikel&rubrik=001005&id=42&lang=en   

3. The GNUH8 v11.01 ELF toolchain supports integration with the KPIT Eclipse
   v1.1.0 and the later versions. 
   Please visit the following link for information on the latest releases of
   KPIT Eclipse:
   http://www.kpitgnutools.com/releaseNotes.php     

   
ABOUT GNUH8 v11.01:

Release Version:        GNUH8 v11.01
Release Date:           1st March 2011
Platforms Supported:    Red Hat GNU/Linux v8.0 or later 
                        (or compatible distribution)
                        Windows NT/2000/XP/Vista/Windows 7
Language:               C, C99, C++
Targets:        
						H8/300
						H8/300L 
						H8/300H
						H8/300H Tiny Series
						H8/S 2XXX
						H8/S 26XX
						H8/SX
Object File Format:     ELF
 
CHANGES IN THIS RELEASE:

This section describes the enhancements made and the issues fixed in v11.01
release.

GCC:

1. The GNUH8 toolchain generated internal compiler error (ICE) for certain test 
   cases that invoked bit manipulation instructions through logical operations.
   This bug has now been fixed.

2. The GNUH8 toolchain generated incorrect branch to offset labels when size
   optimization was used. 
   This bug has now been fixed.

HEW (For Windows OS only):

1. Use of the Flash Development Tool (FDT) plug-ins under HEW is deprecated. 
   Hence, users are advised to download the latest version of FDT application
   and use it independently for Flash downloads.
 
KNOWN LIMITATIONS IN H8-ELF:

This section describes the known limitations in this release. We intend to
fix these issues in our future releases. 
We occasionally release maintenance packs for critical bug fixes.

Windows and GNU/Linux:

1. The following code, when compiled for H8300H, H8300HN, H8S, H8SN, H8SX, 
   and H8SXN targets with the optimization option '-O1' or above, generates
   incorrect assembly code.

   unsigned int ReadWordx86Style(unsigned long lAddr)
   {
      unsigned char baBuff[2];
      baBuff[0x00]=*((unsigned char *)((unsigned int)(lAddr+1)));
      baBuff[0x01]=*((unsigned char *)((unsigned int)(lAddr+0)));
      return((*(unsigned int *)baBuff));
   }

   int start(void)
   {
      unsigned char baBuff[256];
      unsigned int wResult;
      wResult = ReadWordx86Style((unsigned long)((unsigned int)baBuff));
      return(wResult);
   }
 
2. The '.tinybss' implementation does not work as expected.
 
3. The 'scanf' and 'sscanf' functions of newlib do not work for the H8300HN, 
   H8SN and H8SXN targets when '-mint32' is passed to the compiler. 
   
4. Library Generator: Please visit the following link for the known issues 
   and limitations related to this utility:
   http://www.kpitgnutools.com/phpmyfaq/index.php?aktion=artikel&rubrik=001002&
   id=413&lang=en
 

HEW (For Windows OS only):

1. In HEW, when optimized libraries are used in C++ projects, the linker 
   generates "undefined references" error for some ANSI C library functions
   as they are not implemented.

   Workaround: 
   Users can add their own implementation of these functions or can provide
   dummy routines depending upon the usage.
 
2. The 'Generate Makefile' feature is currently not supported in HEW.
 
For other limitations pertaining to the single interface for the compiler, 
assembler, linker and library generator, please visit the following link:
http://www.kpitgnutools.com/phpmyfaq/index.php?aktion=artikel&rubrik=003001&
id=445&lang=en
 
NOTE: 

Windows and GNU/Linux:

1. The optimized libraries provided along with the newlib libraries in the 
   toolchain do not require a separate download. 
 
2. The optimized libraries ('liboptm.a' and 'liboptc.a') are not provided 
   under GNU GPL. The source code of these optimized libraries is neither 
   released nor available on request.
 
3. The "libgen" utility is not provided under GNU GPL. The source code of the
   "libgen" utility is neither released nor available on request.
   
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