ARM C/C++ CODE GENERATION TOOLS 18.9.0.STS Release Notes September 2018 ================================================================================ Contents ================================================================================ 1) Support Information 2) New Features 2.1) Linker generated ECC option 2.2) New utilies: objcopy, objdump, readelf, size ------------------------------------------------------------------------------- 1. Support Information ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- 1.1) List of Fixed and Known Defects ------------------------------------------------------------------------------- As of the 16.12.0.STS release, the DefectHistory.txt file has been replaced with the two files Open_defects.html and Closed_defects.html. For open bugs, a status of Open or Accepted means that the bug has not been examined yet, whereas a status of Planned means that an evaluation or fix is in progress. ------------------------------------------------------------------------------- 1.2) Compiler Wiki ------------------------------------------------------------------------------- A Wiki has been established to assist developers in using TI Embedded Processor Software and Tools. Developers are encouraged to read and contribute to the articles. Registered users can update missing or incorrect information. There is a large section of compiler-related material. Please visit: http://processors.wiki.ti.com/index.php?title=Category:Compiler ------------------------------------------------------------------------------- 1.3) Compiler Documentation Errata ------------------------------------------------------------------------------- Errata for the "TI ARM Optimizing Compiler User's Guide" and the "TI ARM Assembly Language User's Guide" is available online at the Texas Instruments Embedded Processors CG Wiki: http://processors.wiki.ti.com/index.php?title=Category:Compiler under the 'Compiler Documentation Errata' link. ------------------------------------------------------------------------------- 1.4) TI E2E Community ------------------------------------------------------------------------------- Questions concerning TI Code Generation Tools can be posted to the TI E2E Community forums. The "Development Tools" forum can be found at: http://e2e.ti.com/support/development_tools/f/default.aspx ------------------------------------------------------------------------------- 1.5) Defect Tracking Database ------------------------------------------------------------------------------- Compiler defect reports can be tracked at the Development Tools bug database, SDOWP. The log in page for SDOWP, as well as a link to create an account with the defect tracking database is found at: https://cqweb.ext.ti.com/pages/SDO-Web.html A my.ti.com account is required to access this page. To find an issue in SDOWP, enter your bug id in the "Find Record ID" box once logged in. To find tables of all compiler issues click the queries under the folder: "Public Queries" -> "Development Tools" -> "TI C-C++ Compiler" With your SDOWP account you can save your own queries in your "Personal Queries" folder. ------------------------------------------------------------------------------- 1.6) Short Term Support release ------------------------------------------------------------------------------- The ARM CGT v18.9.0.STS release is a short term support (STS) release. This release will be supported only until the next STS or LTS release. ------------------------------------------------------------------------------- 2. New Features ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- 2.1) Linker generated ECC option ------------------------------------------------------------------------------- In previous versions, linker generated ECC has been enabled via an ECC specifier on memory ranges in the linker command file. This makes it difficult for TI to provide linker command files with ECC specified because users need the ability to enable/disable the support. Starting with this version, users can enable/disable ecc support via the --ecc=[on|off] linker option. Existing users of ECC will need to specify --ecc=on ------------------------------------------------------------------------------- 2.2) New utilies: objcopy, objdump, readelf, size ------------------------------------------------------------------------------- This release now includes below objcopy, objdump, readelf, and size utilities: arm-none-eabi-objcopy.exe arm-none-eabi-objdump.exe arm-none-eabi-readelf.exe arm-none-eabi-size.exe NOTE: Above are windows executables names. Unix removes the exe suffix. ------------------------------------------------------------------------------- 2.3) 2011 version of the C language (C11) ------------------------------------------------------------------------------- The compiler supports the 2011 version of the C language. Compiling with the --c11 option causes the compiler to conform to the ISO/IEC 9899:2011 C standard. The compiler supports some features of C11 in the default relaxed ANSI mode. C11 atomic operations are supported in default relaxed ANSI mode and in C11 mode as follows: On ARM V7A8 (Cortex-A8), ARM V7M3 (Cortex-M3), ARM V7M4 (Cortex-M4), ARM V7R4 (Cortex-R4), or ARM V7R5 (Cortex-R5)) an atomic operation is implemented using processor supported exclusive access instructions. On ARM V6M0 (Cortex-M0), an atomic operation is implemented by disabling interrupts across the operation. On ARM V4 (ARM7), ARM V5e (ARM9E), or ARM V6 (ARM11) the atomic operations are not supported. C11 threads.h is not supported.