June 16th, 2010

KPIT Cummins Infosystems Limited is releasing the GNUH8 v10.02 toolchain, a cross compiler tool for Renesas H8 series of micro-controllers.

SALIENT FEATURES:

            1. The GNUH8 v10.02 toolchain is based on gcc-4.5.0 [released], binutils-2.20.51 [dated 26th April 2010], newlib-1.18.0 [released] and gdb-7.1                 [released].

            2. The latest patches are applied to gcc, binutils and newlib sources.
                Please visit the following link for 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 v10.02 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 v10.02:

            Release Version: GNUH8 v10.02

            Release Date: June 16th, 2010

            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 the v10.02 release.

GCC:

            1. When optimization ("-O2 and above") is enabled, the GNUH8 toolchain does not generate bit-instructions for absolute address mode causing                 non-optimized code. The toolchain has now been enhanced to support bit-instructions in absolute addressing mode.

            2. The 'Static Analysis' feature has been discontinued from v10.02 toolchain release onwards.
                Command line users should avoid using the option '-Wanalyze'.
                HEW users should use the latest version of HEW which disables support for the '-Wanalyze' option.

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 the                 FDT application and use it independently for Flash downloads.

            2. In v10.01, the project generation (PG) in HEW was modified to include the 'intrinsics' header file in all projects, however, this header file got                 corrupted when added to the PG. This intrinsics.h file has now been corrected.

            3. The GNU project created in HEW using v10.01 fails to build if the compiler/assembler/linker library include path has trailing backslashes,                 resulting in an error such as:
                "h8300-elf-gcc.exe: cummins\gnuh8-elf\v10.01\h8300-elf\h8300-elf\optlibinc: No such file or directory
                h8300-elf-gcc.exe: warning: '-x c' after last input file has no effect
                h8300-elf-gcc.exe: no input files"
                This bug has now been fixed.

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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