how to specify object file (*.o) address

ttikalit — Fri, 14 Oct 2022 03:25:34 GMT

I want to put the application and driver code into different addresses so that I can split the hexadecimal file into two complete blocks

When I use IAR, in the *.icf file, using the following code, I can specify the link address of the file

place at address mem:0x12345678 {section .text object a.o}

Is there a way to do this in s32ds, s32k146

Re: how to specify object file (*.o) address

stanish — Mon, 31 Oct 2022 18:16:16 GMT

Hi,

Please have a look here:

https://community.nxp.com/t5/S32-Design-Studio-Knowledge-Base/HOWTO-Execute-a-library-function-from-RAM-memory-using-GNU-build/ta-p/1106568

you can force to place a certain segment from specific object file into a different memory region (example uses a object file "lib_a-memcpy-stub.o" from a static library):

1) exclude the object file section from the default section e.g. (.text):

.text : { . = ALIGN(4); /* Exclude file(s) from NewLib libc.a from .text.* section - this replaces .text* */ *(EXCLUDE_FILE (*libc.a:lib_a-memcpy-stub.o) .text*) *(.rodata) /* .rodata sections (constants, strings, etc.) */ *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ *(.glue_7) /* glue arm to thumb code */ *(.glue_7t) /* glue thumb to arm code */ *(.eh_frame) KEEP (*(.init)) KEEP (*(.fini)) . = ALIGN(4); } > m_text‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

2) place the object file section into a new placement rule:

.my_text: { *libc.a:lib_a-memcpy-stub.o (.text*) /* add memcpy from the NewLib library here*/ } > m_my_text /* my new memory region 0x12345678*/

if your object file is directly compiled from the source code you can replace:

*libc.a:lib_a-memcpy-stub.o (.text*)

with:

*lib_a-memcpy-stub.o (.text*)

Hope it helps

Stan

Re: how to specify object file (*.o) address

ttikalit — Tue, 08 Nov 2022 10:53:21 GMT

Hi Stan,

its work

Many Thanks

ttikalit

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how to specify object file (*.o) address

Re: how to specify object file (*.o) address

Re: how to specify object file (*.o) address