How to specify an exact address for c_int00 for C6748

Greetings,

I take it you have your own c_int00() so this should work for you

/*

* Put c_int00 in the .xxxx section pointing to your address.

*/

#pragma CODE_SECTION(c_int00,".xxxx")
extern void interrupt c_int00()
{
.

Good Luck,

Sam

Hi Sam,

I'm not declaring my own but using the standard function provided in rtsd6740_elf_eh.lib, but it cannot be placed at a different address as the http://processors.wiki.ti.com/index.php/Accessing_c_int00 suggests, but I'll keep in mind your reply in case I'll need to add my own.

Best regards,

David.

Greetings,

Then extract the one you are using from the library and force it as shown to you.  It will take precedence over the existing one.

Good Luck,

Sam 

Hello,

I had exaclty the same problem, and the solution is here :

http://e2e.ti.com/support/development_tools/compiler/f/343/t/70137.aspx

Hi Remi,

I've looked in the link you posted, I was using option #1:

1) Add rts430.lib to the --library option (C/C++ Build->Linker->File Search Path) and make sure it’s the first library in the list (so rts430.lib appears before libc.a in the command line)

So the linker .cmd file looks like below, the warning is gone but the _c_int00 is not moved, it's positioned at 0x11814ca0. 

-stack           0x00008000
-heap            0x00008000

MEMORY
{
   dsp_l2_ram:      ORIGIN = 0x11800000  LENGTH = 0x00040000
   shared_ram:      ORIGIN = 0x80000000  LENGTH = 0x00020000
   external_ram:    ORIGIN = 0xC0000000  LENGTH = 0x08000000
   arm_local_ram:   ORIGIN = 0xFFFF0000  LENGTH = 0x00002000
}

SECTIONS
{
	.boot > 0x11800000
	{
    	-l rts6740_elf_eh.lib(.text)
	}
   .text       > dsp_l2_ram
   .const      > dsp_l2_ram
   .bss        > dsp_l2_ram
   .far        > dsp_l2_ram
   .switch     > dsp_l2_ram
   .stack      > dsp_l2_ram
   .data       > dsp_l2_ram
   .cinit      > dsp_l2_ram
   .sysmem     > dsp_l2_ram
   .cio        > dsp_l2_ram
   .pinit      > dsp_l2_ram
   .init_array  > dsp_l2_ram
   .fardata     > shared_ram
   .c6xabi.exidx: load > shared_ram
   .c6xabi.extab: load > shared_ram
   .neardata    > dsp_l2_ram
   .rodata     > dsp_l2_ram
   .clean       > dsp_l2_ram
}

I'm new to CCSv5 so I don't know how to "extract" a function from a library. The #pragma mentioned

by Sam Kuzbary in previous post also doesn't work. I've tried adding to main.cpp the following declaration:

#pragma CODE_SECTION(_c_int00, ".boot");

extern void _c_int00();

But the compiler now complains with the following error:

"../main.cpp", line 26: error #821: badly formed pragma

Did anyone actually successfully done it for the C6000 series? The other posts seem to work for C2000 microcontrollers.

Best regards,

David.

David,

You should be able to control placement of c_int00 with the linker command file as you have tried. Can you attach the link map file(.map) generated with this latest linker command file for us to look at? Also could you please copy and paste the complete output of the CCS build console into a text file and attach that as well?

Hello AartiG,

This is the compiler output:

**** Clean-only build of configuration Debug for project HwTest ****

C:\GnuWin32\bin\make -j 4 -k clean 
DEL /F  "HwTest.out"
DEL /F "MenuDDR.pp" "MenuSPI.pp" "MenuWDT.pp" "Test_DDR.pp" "main.pp" 
DEL /F "MenuDDR.obj" "MenuSPI.obj" "MenuWDT.obj" "Test_DDR.obj" "main.obj" 
'Finished clean'
' '

**** Build Finished ****
**** Build of configuration Debug for project HwTest ****

C:\GnuWin32\bin\make -j 4 -k all 
'Building file: ../MenuDDR.cpp'
'Building file: ../MenuSPI.cpp'
'Building file: ../MenuWDT.cpp'
'Building file: ../Test_DDR.cpp'
'Invoking: C6000 Compiler'
'Invoking: C6000 Compiler'
"C:/ti/ccsv5/tools/compiler/c6000/bin/cl6x" -mv6740 -g --exceptions --gcc --include_path="C:/ti/ccsv5/tools/compiler/c6000/include" --include_path="Software/myLib" --display_error_number --diag_warning=225 --abi=eabi --preproc_with_compile --preproc_dependency="MenuDDR.pp"  "../MenuDDR.cpp"
'Invoking: C6000 Compiler'
"C:/ti/ccsv5/tools/compiler/c6000/bin/cl6x" -mv6740 -g --exceptions --gcc --include_path="C:/ti/ccsv5/tools/compiler/c6000/include" --include_path="Software/myLib" --display_error_number --diag_warning=225 --abi=eabi --preproc_with_compile --preproc_dependency="MenuSPI.pp"  "../MenuSPI.cpp"
'Invoking: C6000 Compiler'
"C:/ti/ccsv5/tools/compiler/c6000/bin/cl6x" -mv6740 -g --exceptions --gcc --include_path="C:/ti/ccsv5/tools/compiler/c6000/include" --include_path="Software/myLib" --display_error_number --diag_warning=225 --abi=eabi --preproc_with_compile --preproc_dependency="MenuWDT.pp"  "../MenuWDT.cpp"
"C:/ti/ccsv5/tools/compiler/c6000/bin/cl6x" -mv6740 -g --exceptions --gcc --include_path="C:/ti/ccsv5/tools/compiler/c6000/include" --include_path="Software/myLib" --display_error_number --diag_warning=225 --abi=eabi --preproc_with_compile --preproc_dependency="Test_DDR.pp"  "../Test_DDR.cpp"
'Finished building: ../Test_DDR.cpp'
' '
'Building file: ../main.cpp'
'Invoking: C6000 Compiler'
"C:/ti/ccsv5/tools/compiler/c6000/bin/cl6x" -mv6740 -g --exceptions --gcc --include_path="C:/ti/ccsv5/tools/compiler/c6000/include" --include_path="Software/myLib" --display_error_number --diag_warning=225 --abi=eabi --preproc_with_compile --preproc_dependency="main.pp"  "../main.cpp"
'Finished building: ../MenuSPI.cpp'
' '
'Finished building: ../MenuDDR.cpp'
' '
'Finished building: ../MenuWDT.cpp'
' '
'Finished building: ../main.cpp'
' '
'Building target: HwTest.out'
'Invoking: C6000 Linker'
"C:/ti/ccsv5/tools/compiler/c6000/bin/cl6x" -mv6740 -g --exceptions --gcc --display_error_number --diag_warning=225 --abi=eabi -z -m"HwTest.map" --warn_sections -i"C:/ti/ccsv5/tools/compiler/c6000/lib" -i"C:/ti/ccsv5/tools/compiler/c6000/include" -i"Software/myLib/Debug" --reread_libs --rom_model -o "HwTest.out"  "./main.obj" "./Test_DDR.obj" "./MenuWDT.obj" "./MenuSPI.obj" "./MenuDDR.obj" -l"rts6740_elf_eh.lib" -l"myLib.lib" -l"C:\ti\C6748_StarterWare_1_20_02_02\build\c674x\cgt_ccs\utils\Debug\utils.lib" -l"C:\ti\C6748_StarterWare_1_20_02_02\build\c674x\cgt_ccs\c6748\drivers\Debug\drivers.lib" -l"C:\ti\C6748_StarterWare_1_20_02_02\build\c674x\cgt_ccs\c6748\system_config\Debug\system_config.lib" -l"C:\ti\C6748_StarterWare_1_20_02_02\build\c674x\cgt_ccs\c6748\evmC6748\platform\Debug\platform.lib" "../linker_dsp.cmd" 
<Linking>
'Finished building target: HwTest.out'
' '

**** Build Finished ****

I've also attached the HwTest.map file:6165.HwTest.zip

Best regards,

David.