2014-08-05 12:23 GMT+08:00 Chris Johns <chr...@rtems.org>: > On 4/08/2014 12:18 am, Peng Fan wrote: > >> Hi, >> >> Create this new thread to talk about this topic and the reloc related. >> >> 1. >> As you suggested, I have compiled toolchain for arm using option >> `-mlong-calls` on arm realview qemu platform, and now the python.rap >> file can be correctly loaded and python interpreter can run the xxx.py >> in startup like this `rap ld ./python-library.rap tmp a.py`. >> > > Nice. How big is the RAP file ? > About 1.1M, the py files are not included, only include c files.
> > Having to use the '-mlong-calls' option is hack. I think we need to teach > the target code for ARM to add a veneer. Section 5.3.1.1 in > http://infocenter.arm.com/help/topic/com.arm.doc. > ihi0042e/IHI0042E_aapcs.pdf indicates this but does not seem to detail > the process. I am not sure how this is actually done or what we are > required to do. > > Hmm.Modify saying R_ARM_CALL/JUMP24 near reloc to R_ARM_ABS32 is not easy. I'll take time to hack this. > > A small hack should be done is about gcc search dirs. I'll try to fix >> this later. >> > > What is the issue ? It would be good to have a record of it archived. There is something wrong with file details accutally the file paths that gdb can not correctly load the compiled object files. I have not look into this, maybe gdb source code or rtl-host does not handle this correctly. > > > >> Another issue is that, when python rap is loaded without and py file >> passed to it, it can not respond to input. The msg output is : >> >> RTEMS SHELL (Ver.1.0-FRC):/dev/console. Aug 3 2014. 'help' to list >> commands. >> [/] # rap ld ./python-library.rap >> rtl: loading './python-library.rap' >> rtl: rap: input machine=0 >> rtl: rap: machinetype=40 >> rtl: rap: datatype=1 >> rtl: rap: class=1 >> rtl: rap: input header=12 >> rtl: rap: load: symtab=16068 (1339) strtab=23867 relocs=0 >> rtl: rap: input .text=32948 >> rtl: rap: input .const=1088028 >> rtl: rap: input .data=1233652 >> rtl: rap: input symbols=1465241 >> rtl: rap: input relocs=1505176 >> Could not find platform independent libraries <prefix> >> Could not find platform dependent libraries <exec_prefix> >> Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>] >> Python 2.7.8 (default, Aug 3 2014, 21:17:53) >> [GCC 4.8.3 20140522 (RTEMS >> 4.11-RSB-7c46699472b0d0adea2010f735722e2610c8c6ae-1, on linux2 >> Type "help", "copyright", "credits" or "license" for more information. >> >>> >> >> It does not respond to input, any ideas about this? >> >> > This looks like a qemu or BSP issue. Python expects some site specific > python files. I cannot remember what this looks like for RTEMS. Maybe the > old ftp tarball I once uploaded will give you an idea. > Thanks. > > If Python calling exit so halting the target ? it can correctly execute py files when start the python-library.rap, and after finished the py executing, shell is fine with input and output. but if only load python-library.rap with no py files passed to it, python shell does not respond with ">>>". > > > 2. I have not tried on sparc sis, because it's memory is small. How to >> modify it's memory size in sis-gdb? >> > > I seem to remember an option you can provide with 'target sim'. Maybe a -? > will provide some help. Ok. I try. Regards, Peng. > > > Chris >
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