Linker & Overlap

[SeanW]

I am have CodeWarrior MPC55xx version 2.2, build 71004.

I have some warnings which I believe is being caused by the way I set up my interrupt vector table.

#pragma section const_type ".isrvectbl"

const uint32_t IntcIsrVectorTable[] = {

 /* Interrupt Table */   (uint32_t)&dummy, (uint32_t)&emios_ch0_ISR , /* Rest of ISRs continue on here...

 /* for all 309 ISRs */  

};

You can see that all un-used interrupt vectors have a dummy function associated with them. I then compile and get the following:

1)

" No liner command file input for section '.isrvectbl' in file '<PATH\IntcIsrVectors.o'

  Output section '.isrvectbl' will be created."

2)

"Overlap of the .__bam_botarea section and .isrvectbl section."

"Overlap of the .init section and .isrvectbl section."

"Overlap of the .init_vle section and .isrvectbl section."

What am I doin wrong?

[SeanW]

Thank you.  I don't understand how this linker file works. Would you be more specific?

I know that there can be 280 ISR vectors for the MPC5567. How do I allocate the memory for these vectors?

Generated Linker File:

SECTIONS
{
    .__bam_bootarea LOAD (0x00000000): {} > resetvector

/* would I instert here .__IsrVectorTable () */

    GROUP : {
      .init LOAD (0x00000020) : {}
      .init_vle (VLECODE) LOAD (_e_init) : {
        *(.init)
        *(.init_vle)
      }
    } > init

[CrasyCat]

Hello

Assume you have a block of memory defined as follows in your .lcf  MEMORY block

   exception_table: org = 0x00001000,   len = 0x00001000

and you want to allocate your vector table there.

You need to write

SECTIONS
{
    .__bam_bootarea LOAD (0x00000000): {} > resetvector

   .isrvectbl   LOAD (0x00001000): {} > exception_table

    GROUP : {
      .init LOAD (0x00000020) : {}
      .init_vle (VLECODE) LOAD (_e_init) : {
        *(.init)
        *(.init_vle)
      }
    } > init

  

CrasyCat

[CrasyCat]

Hello

You need to explicitly place the section .isrvectbl in your application linker command file.

This section should be specified in the SECTIONS block.

CrasyCat