|
GNUSH v10.01
February 19th
,
2010
KPIT Cummins
Infosystems Limited is releasing GNUSH v10.01 toolchain, a cross
compiler tool for Renesas (formerly Hitachi and Mitsubishi) SH series of
micro-controllers.
SALIENT
FEATURES:
ABOUT GNUSH
v10.01 :
|
Release Version: |
GNUSH
v10.01 |
|
Release Date: |
February 19th, 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: |
SH-1 |
|
|
SH-2 |
|
|
SH-2A |
|
|
SH-2E |
|
|
SH2-DSP |
|
|
SH-3
|
|
|
SH-3E |
|
|
SH3-DSP |
|
|
SH-4
|
|
|
SH-4A
|
|
|
SH-4AL-DSP |
|
Object File Format: |
ELF |
CHANGES IN
THIS RELEASE:
This section
describes the enhancements made and the issues fixed in the v10.01
release.
GCC:
|
1. |
The SH peripheral registers have
strict access size requirements with some registers
requiring a byte level access and other while others
requiring word level
access. The GNUSH compiler generates a word level access
instruction "MOV.W" to access all the peripheral registers.
This bug has now been fixed. The peripheral registers can
now be accessed as per their pre-defined access type. Users
need to use "volatile" keyword while declaring the
peripheral registers with strict access size requirement.
Please refer to the following FAQ for details,
http://www.kpitgnutools.com/phpmyfaq/index.php?aktion=artikel&rubrik=002003&id=430&lang=en
|
|
2. |
When the compiler switch "-fcall-saved-gbr"
is used to save and restore the "GBR" register inside a
function, the GNUSH toolchain generates an internal compiler error
(ICE).
This bug has now been fixed. |
|
3. |
For some test cases, the GNUSH v0903
toolchain generates incorrect prologue and epilogue for
interrupt service routines.
This bug has now been fixed |
|
4. |
The GNUSH toolchain did not generate
the 'TST' instruction for comparison operation for immediate
values greater than 127.
This bug has now been fixed. |
|
5. |
Local variable value is not updated at
correct memory location when viewed in GDBSH. This happens when
an array of structure is passed as an argument of the function.
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 the FDT application and use it independently for
Flash downloads. |
|
2. |
In the HEW linker section wizard, the
"KEEP" attribute was previously set to a group of sections
rather than the individual sections within that group.
This bug has now been fixed. Each individual section within the
group is now generated with the "KEEP" attribute. |
|
3. |
In HEW project generation up to v0903,
the generated projects do not include the intrinsic header file.
Instead, the user must navigate to the migration guide and
download from there. In v10.01, the project generation in HEW is
modified to include this header in all projects, so that users
can use it with minimal work. |
KNOWN
LIMITATIONS IN SH-ELF:
This section
describes the known problems in this release. We intend to fix these
issues in our future releases.
We
occasionally release maintenance packs for critical bugs fixes.
Windows and
GNU/Linux:
|
1. |
In
newlib, the 'fmod' function fails with and without "-mrenesas"
option for the following single precision targets, |
|
a. |
SH2E |
|
b. |
SH2A-Single-Only |
|
c. |
SH3E |
|
d. |
SH4-Single-Only (little endian and big endian) |
|
e. |
SH4A-Single-Only (little endian and big endian) |
|
2. |
The
'log10', 'ldexp' and 'frexp' functions of optimised libraries
fail for SH4-Single-Only (little endian) and SH4A-Single-Only
(little endian) targets. |
|
3. |
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=002003&id=415&lang=en |
HEW (For
Windows OS only):
NOTE:
Windows
and GNU/Linux:
|
1. |
The
optimised libraries provided
along with the Newlib libraries in
the toolchain do not require a
separate download. |
|
2. |
The
optimised libraries ('liboptm.a'
and 'liboptc.a') are not provided
under GNU GPL. The source code of these
optimised 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. |
|
4. |
v10.01 ELF release onwards, the
toolchain versioning system is changed. A decimal point is
used to separate the year of toolchain release (e.g. 10
i.e., the last 2 digits of the year 2010) and the release number (
e.g., 01 i.e., 1st release of year 2010). |
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technical support please register at
http://www.kpitgnutools.com/
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http://www.kpitgnutools.com/feedback.php |