Hi All,
I am using yacto with T4240 target and I built the u-boot.bin file. I want to check instruction.
Please provide command or path to generate assembly code from yacto linux executable binary.
SDK,
QorIQ-SDK-V2.0-20160527-yocto
Regards,
VinothS
Solved! Go to Solution.
Hi,
I done
<Yacto SDK installation directory>/build_t4240rdb-64b/tmp/sysroots/x86_64-linux/usr/bin/powerpc64-fsl-linux/powerpc64-fsl-linux-objdump -d u-boot-spl > u-boot-spl1.dis
u-boot-spl1.dis,
u-boot-spl: file format elf32-powerpc
Disassembly of section .text:
eff40000 <_start>:
eff40000: 27 05 19 56 dozi r24,r5,6486
eff40004 <version_string>:
eff40004: 55 2d 42 6f rlwinm. r13,r9,8,9,23
...................................................................
Regards,
VInothS
It looks like that this BSP does not supports this possibilities.
The simplest way for your task is CodeWarrior. CodeWarrior provides u-boot debugging and check instruction.
See the AN4876 application note:
https://www.nxp.com/docs/en/application-note/AN4876.pdf
Have a great day,
Pavel Chubakov
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Hi,
I done
<Yacto SDK installation directory>/build_t4240rdb-64b/tmp/sysroots/x86_64-linux/usr/bin/powerpc64-fsl-linux/powerpc64-fsl-linux-objdump -d u-boot-spl > u-boot-spl1.dis
u-boot-spl1.dis,
u-boot-spl: file format elf32-powerpc
Disassembly of section .text:
eff40000 <_start>:
eff40000: 27 05 19 56 dozi r24,r5,6486
eff40004 <version_string>:
eff40004: 55 2d 42 6f rlwinm. r13,r9,8,9,23
...................................................................
Regards,
VInothS
Yocto SDK provides generation u-boot source code. Disassembling is not needed for debugging.
Have a great day,
Pavel Chubakov
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Hi Pavel,
In SDK after done built we got tool for binutils,
binutils includes objdump and libopcodes library for assembly code generation.
By using this tool we can generate the assembly code for yacto linux executable. But, I don't know how to processed this and also I tried nothing I got.
<SDK installation directory>/build_t4160qds-64b/tmp/sysroots/t4160qds-64b/pkgdata/runtime-reverse u-boot-spl > u-boot-spl1.dis
Regards,
VinothS
Usually the following command is used for u-boot code modification:
bitbake -c cleansstate u-boot
bitbake -c patch u-boot
This command generates source of the u-boot. See u-boot source using the similar path:
QorIQ-SDK-V2.0-20160527-yocto/build_t1042d4rdb/tmp/work/t1042d4rdb-fsl-linux/u-boot-qoriq/2016.01+fslgit-r0/git
Change u-boot code and use the following command for u-boot building:
bitbake -c compile -f u-boot
bitbake u-boot
Have a great day,
Pavel Chubakov
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Hi Pavel,
Thank you for your reply.
Whatever you mentioned commands are the general for building/compiling purpose.
After compilation we got linux executable binary file by using this file we can generate disassembly code file for u-boot debugging.
For this purpose. there is specific tool under the yacto sdk.
Regards,
VinothS