S12 / MagniV Microcontrollers中的主题 Re: section in asm files

section in asm files

mark99 — Mon, 09 Jan 2012 21:31:52 GMT

In the last project for HCS12 I used the following mechanism to build firmware with and without bootware:

prm:

---

SEGMENTS

//*

ROM_FD00 = NO_INIT DATA_NEAR IBCC_NEAR 0xFD00 TO 0xFDFF; // bootware identification string

ROM_FFFA = NO_INIT DATA_NEAR IBCC_NEAR 0xFFFA TO 0xFFFF; // interrupt vectors

/*/

ROM_FD00 = READ_ONLY DATA_NEAR IBCC_NEAR 0xFD00 TO 0xFDFF; // for use without bootware

ROM_FFFA = READ_ONLY DATA_NEAR IBCC_NEAR 0xFFFA TO 0xFFFF; // for use without bootware

//*/

END

PLACEMENT

BW_VERSIOM_ROM INTO ROM_FD00;

IRQ_VECTOR_ROM INTO ROM_FFFA;

END

asm:

---

BootBlockSize: equ $2000

; bootware version string location

BW_VERSIOM_ROM section

; interrupt jump table for firmware without bootware

JCOPFail jmp [ COPFail - BootBlockSize, pcr ]

JClockFail: jmp [ ClockFail - BootBlockSize, pcr ]

JReset: jmp [ Reset - BootBlockSize, pcr ]

; interrupt table for firmware without bootware

IRQ_VECTOR_ROM section

COPFail: dc.w JCOPFail

ClockFail: dc.w JClockFail

Reset: dc.w JReset

It seems the keyword 'IRQ_VECTOR_ROM section' doesn't work anymore with HCS12X. I have to use 'org $FFFA' instead.

Any idea why?

Thanks a lot!

Re: section in asm files

CrasyCat — Tue, 10 Jan 2012 16:07:19 GMT

Hello

Which version of CodeWarrior are you using?

To retrieve that info:
    - Start CodeWarrior
    - Select Help -> About Freescale CodeWarrior
    - Click on "Install Products"
    - CodeWarrior version used is displayed on top in the Installed Products dialog.

I did try on a project for HCS12XEP100 on V5.1 and it works fine.

What do you mean exactly with keyword 'IRQ_VECTOR_ROM section' doesn't work anymore?

Are you getting an assembly message?

Are you getting a linker message?

Are you not seeing the section in the .map file?

CrasyCat

Re: section in asm files

mark99 — Thu, 19 Jan 2012 15:00:42 GMT

Thank you for your answer. And sorry for the late reply...troubles in other projects...

> Which version of CodeWarrior are you using?

I'm using CodeWarrior S12(X) Version 5.1, build 10221

> What do you mean exactly with keyword

> 'IRQ_VECTOR_ROM section' doesn't work

> anymore?

If I use 'IRQ_VECTOR_ROM section' the asm file will not be linked. I can't find the asm file in the map file. With 'org $FD00' it works.

> Are you getting an assembly message?

No.

> Are you getting a linker message?

No.

> Are you not seeing the section in the

> .map file?

No.

Thank you for any hints!

Mark

Re: section in asm files

CrasyCat — Thu, 19 Jan 2012 15:55:25 GMT

Hello

THere seem to be a problem in your project.

You need to submit a service request for that to get one of our support engineer looking into that
Click here to submit a service request..

Make sure to attach a project reproducing the issue and installed product information to the SR.
To make sure you provide all necessary project information, you can use the Pack and Go wizard.
- Start the IDE
- Open the Project
- Select Help -> "Pack and Go"
- Follow the instruction on the screen. That will generate a zip file containing all necessary
information (including the installed product information).

CrasyCat

Re: section in asm files

mark99 — Thu, 19 Jan 2012 16:37:22 GMT

Hello

I created a new project for HCS12X, added the asm file and the prm file. It's the same problem as in the other project. What happens if you build the test project attached?

If you'll find the sections 'BW_VERSIOM_ROM' and 'IRQ_VECTOR_ROM' there must be a problem with my CodeWarrior installation.

Thanks a lot for your help!

Re: section in asm files

kef — Thu, 19 Jan 2012 17:26:32 GMT

Unused objects from Firmware.asm are optimized out by linker. Try adding this to your PRM file

ENTRIES

Firmware.asm.o:*

END

Re: section in asm files

mark99 — Thu, 19 Jan 2012 20:06:53 GMT

You're write, thank you!!

I'm wondering that the linker optimizes out code like that.

Thanks a lot!

Mark