topic L1907 linker error in CodeWarrior for MCU

L1907 linker error

stevec — Mon, 13 May 2013 09:04:16 GMT

I have some link errors:

Link Error : L1907: Fixup overflow in initialise, to avail_msg_list type 1, at offset 0x3B

Link Error : L1907: Fixup overflow in initialise, to msg_order_list type 1, at offset 0x3D

Link Error : L1907: Fixup overflow in initialise, to message_lengths type 1, at offset 0x3F

Link Error : Link failed

I defined the segments I wanted the variable arrays to go in

#pragma DATA_SEG FAR_RAM

unsigned char avail_msg_list[30]; //table of empty record slots

unsigned char msg_order_list[30]; //table of order of messages

unsigned char message_lengths[30]; //length in pages of each message

#pragma DATA_SEG DEFAULT

I need these to go into non zero page RAM to free up the zero page area (9S08QE8)

I get the failures here:

for(i = 0; i < 30; i++)

{

avail_msg_list[i] = i + 1; //set up table with 1 to 30

msg_order_list[i] = 0; //zero msg order list so no msgs played

message_lengths[i] = 0; //zero message lengths table entries...probably not necessary

}

Any suggestions as to what I am doing wrong?

Steve

Re: L1907 linker error

BlackNight — Mon, 13 May 2013 09:08:37 GMT

Are you using these 3 arrays somewhere else too?

Make sure that the header file knows about the pragma too:

#pragma DATA_SEG FAR_RAM

extern unsigned char avail_msg_list[30];

extern unsigned char msg_order_list[30];

extern unsigned char message_lengths[30];

#pragma DATA_SEG DEFAULT

Then: in the linker file, have you allocated the FAR_RAM outside the zero page too?

I hope this helps.

Re: L1907 linker error

stevec — Mon, 13 May 2013 11:45:04 GMT

Erich,

Yes I have made the arrays extern in the .h file and the FAR_RAM is specified in the .prm file

PLACEMENT /* Here all predefined and user segments are placed into the SEGMENTS defined above. */

FAR_RAM , /* non-zero page variables */

INTO RAM;

But I still get the link error.

Steve

Re: L1907 linker error

BlackNight — Mon, 13 May 2013 11:54:51 GMT

Maybe now I see it:

#pragma DATA_SEG FAR_RAM

does not make it far (it is using the default address size which is 8bit).

I think the syntax is

#pragma DATA_SEG FAR FAR_RAM

Can you try this?

Re: L1907 linker error

stevec — Mon, 13 May 2013 12:58:16 GMT

Erich,

That seems to have sorted it. Many thanks. I thought that telling the compiler where in memory the variables were stored would automatically sort out the addressing mode. I get no compiler/linker errors now thanks. Now to check that the code does what I want it too.

Steve