TI E2E Community
TI C/C++ Compiler
TI C/C++ Compiler - Forum
Linker 4.9.3 is generating WRONG Offset Address within MAP file
I am attaching a ZIP file. Please unzip all files to a folder.
Once you modify the Linker_Offset_Bug.bat file to your Linker Location Path and run it, you will get Flash_Hex_Array.map file.
In the MAP file you will find following symbols and address respectively:
0000048f FLASH_ERASE_SECTOR_OFFSET00000594 FLASH_SET_BANK_OFFSET
08000595 Fapi_setActiveFlashBank0800048f Erase_Flash_Sector_From_Bank
The address value of FLASH_SET_BANK_OFFSET is wrong because in the linker_Flash_Drv_Bug.cmd file you will see the following statements:
FLASH_SET_BANK_OFFSET = (Fapi_setActiveFlashBank - _Flash_Driver_Download_P); /* ???? -- This is BUG */
FLASH_ERASE_SECTOR_OFFSET = (Erase_Flash_Sector_From_Bank - _Flash_Driver_Download_P);
Please let me know about this BUG.
Interesting that the linker gets it wrong by only 1. I wish I could say that's close enough. :-)
You have written an expression which uses two symbols that are being defined, effectively, at the same time as when the expression is being evaluated. Both Fapi_setActiveFlashBank (a function symbol) and _Flash_Driver_Download_P (created on an earlier line in the link command file) are not well defined when the linker starts. You obviously intend for that expression to be evaluated after those symbols have been defined. However, the linker does not work like that, and there is no method by which you can change it.
The only solution I see is to evaluate that expression after linking is complete. This means it must be done dynamically, when your system is running. I realize this is not what you expect. But it is the only solution I can see right now.
Thanks and regards,
TI C/C++ Compiler Forum ModeratorPlease click Verify Answer on the best reply to your question.The Compiler Wiki answers most common questions.Track an issue with SDOWP. Enter your bug id in the "Find Record ID" box.
I only want to create a SYMBOL in the MAP file which determines the OFFSET of some other SYMBOLS as present within OBJ files from the RUN ADRRESS or LOAD ADDRESS.
Is there any better way to create the OFFSET value of any symbol?
Pashan NoneIs there any better way to create the OFFSET value of any symbol?
Unfortunately, no. Computing an offset requires subtraction of two symbols. And those symbols are being defined during the link. The linker simply does not support that.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.