Intermixing source code with disassembly
Teng Chee Wan Philip
tcheewan at ntu.edu.sg
Tue Apr 8 10:11:27 UTC 2008
Hi,
I attached the makefile for reference. How do I modify the makefile for
forward or backward slashes?
Initially, I thought that will be a problem. But when I tried with the
ticker application, the slash remains mixed but the source was
intermixed....Unless size of the application is an issue.
Part of the disassembled file from ticker
=============================
02001498 <Test_task>:
Test_task():
c:\msys\1.0\home\PhilipTeng\ticker4/tasks.c:25
#include "system.h"
rtems_task Test_task(
rtems_task_argument unused
)
{
2001498: 9d e3 bf 60 save %sp, -160, %sp
c:\msys\1.0\home\PhilipTeng\ticker4/tasks.c:31
rtems_id tid;
rtems_time_of_day time;
uint32_t task_index;
rtems_status_code status;
status = rtems_task_ident( RTEMS_SELF, RTEMS_SEARCH_ALL_NODES, &tid );
200149c: 90 10 20 00 clr %o0
20014a0: 92 10 20 00 clr %o1
20014a4: 40 00 2e 41 call 200cda8 <rtems_task_ident>
20014a8: 94 07 bf f4 add %fp, -12, %o2
c:\msys\1.0\home\PhilipTeng\ticker4/tasks.c:32
task_index = task_number( tid );
20014ac: 03 00 80 ac sethi %hi(0x202b000), %g1
20014b0: c4 00 62 74 ld [ %g1 + 0x274 ], %g2 !
202b274 <_Configuration_Table>
20014b4: 03 00 00 3f sethi %hi(0xfc00), %g1
20014b8: c6 00 a0 2c ld [ %g2 + 0x2c ], %g3
20014bc: c4 07 bf f4 ld [ %fp + -12 ], %g2
20014c0: 82 10 63 ff or %g1, 0x3ff, %g1
20014c4: c8 00 e0 24 ld [ %g3 + 0x24 ], %g4
20014c8: 84 08 80 01 and %g2, %g1, %g2
c:\msys\1.0\home\PhilipTeng\ticker4/tasks.c:39
status = rtems_clock_get( RTEMS_CLOCK_GET_TOD, &time );
if ( time.second >= 35 ) {
puts( "*** END OF CLOCK TICK TEST ***" );
rtems_test_exit( 0 );
}
put_name( Task_name[ task_index ], FALSE );
20014cc: 03 00 80 ab sethi %hi(0x202ac00), %g1
c:\msys\1.0\home\PhilipTeng\ticker4/tasks.c:32
rtems_time_of_day time;
uint32_t task_index;
rtems_status_code status;
status = rtems_task_ident( RTEMS_SELF, RTEMS_SEARCH_ALL_NODES, &tid );
task_index = task_number( tid );
20014d0: ae 20 80 04 sub %g2, %g4, %l7
c:\msys\1.0\home\PhilipTeng\ticker4/tasks.c:39
-----Original Message-----
From: Chris Johns [mailto:chris at contemporary.net.au]
Sent: Tuesday, April 08, 2008 3:47 PM
To: Thomas Doerfler
Cc: Teng Chee Wan Philip; rtems-users at rtems.com
Subject: Re: Intermixing source code with disassembly
Hi Thomas,
I noticed this and I was trying to figure out if this is a problem. I
have not
been able to get a test case with the mixed paths.
Philip, how do you build the application ?
Regards
Chris
Thomas Doerfler wrote:
> Philip,
>
> maybe this is too obvious and you already checked this, but I noticed,
> that all the RTEMS source files are specified with a slash "/" as the
> directory separator:
>
>
C:/Msys/1.0/home/PhilipTeng/rtems-4.8/rtems-4.8.0/c/src/lib/libbsp/sparc
/shared/bspstart.c:119
>
>
> but in your application path, the directories seem to be separated
> with a backslash "\":
>
> c:\msys\1.0\home\PhilipTeng\app/app.c:188
>
> Maybe this confuses objdump?
> This string should be the one passed to GCC during compilation. Maybe
> you can modify your makefile to use only forward slashes (or only
> backslashes).
>
> wkr,
> Thomas.
>
>
>
> Teng Chee Wan Philip schrieb:
>> Yes, I did.
>>
>>
------------------------------------------------------------------------
>> *From:* Joel Sherrill [mailto:joel.sherrill at oarcorp.com]
>> *Sent:* Mon 4/7/2008 10:43 PM
>> *To:* Teng Chee Wan Philip
>> *Cc:* Chris Johns; rtems-users at rtems.com
>> *Subject:* Re: Intermixing source code with disassembly
>>
>> Teng Chee Wan Philip wrote:
>> > Thanks, Chris. I tried the following. The line number gets
inserted
>> > (That is a positive step. :) ) but the disassembled code is still
not
>> > intermixed with the application source.
>> >
>> > sparc-rtems4.8-objdump -D --line-numbers --source --demangle
app.exe
>> >
>> > There is some differences between code disassembled for the RTEMS
OS and
>> > the application. I extracted part of it out for illustration.
>> >
>> Did you compile your application code with the -g option?
>>
>> > Disassembled code intermixed with RTEMS source
>> > =====================================
>> > 0200ddec <bsp_start>:
>> > bsp_start():
>> >
C:/Msys/1.0/home/PhilipTeng/rtems-4.8/rtems-4.8.0/c/src/lib/libbsp/sparc
>> > /shared/bspstart.c:119
>> > *
>> > * This routine does the bulk of the system initialization.
>> > */
>> > void bsp_start( void )
>> > {
>> > 200ddec: 9d e3 bf 98 save %sp, -104, %sp
>> >
C:/Msys/1.0/home/PhilipTeng/rtems-4.8/rtems-4.8.0/c/src/lib/libbsp/sparc
>> > /shared/bspstart.c:137
>> > * This should be enough interrupt stack.
>> > */
>> >
>> > Cpu_table.interrupt_stack_size =
CONFIGURE_INTERRUPT_STACK_MEMORY;
>> >
>> > work_space_start =
>> > 200ddf0: 03 00 80 01 sethi %hi(0x2000400), %g1
>> > 200ddf4: 23 00 8b 41 sethi %hi(0x22d0400), %l1
>> > 200ddf8: da 00 63 c0 ld [ %g1 + 0x3c0 ], %o5
>> > 200ddfc: 82 14 63 dc or %l1, 0x3dc, %g1
>> > 200de00: c8 00 60 04 ld [ %g1 + 4 ], %g4
>> >
C:/Msys/1.0/home/PhilipTeng/rtems-4.8/rtems-4.8.0/c/src/lib/libbsp/sparc
>> > /shared/bspstart.c:128
>> > * Set up our hooks
>> > * Make sure libc_init is done before drivers initialized so
that
>> > * they can use atexit()
>> > */
>> >
>> > Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init
libc, etc.
>> > */
>> > 200de04: 03 00 80 37 sethi %hi(0x200dc00), %g1
>> > 200de08: 82 10 62 64 or %g1, 0x264, %g1 ! 200de64
>> > <bsp_pretasking_hook>
>> > 200de0c: 07 00 8b 41 sethi %hi(0x22d0400), %g3
>> >
>> > Disassembled code intermixed with line number but not source
>> > ==============================================
>> > c:\msys\1.0\home\PhilipTeng\app/app.c:188
>> > 20013e4: 40 00 1b 78 call 20081c4 <canMastInit>
>> > 20013e8: 90 10 20 04 mov 4, %o0
>> > 20013ec: 80 a2 20 01 cmp %o0, 1
>> > 20013f0: 22 80 00 8b be,a 200161c <Init+0x43c>
>> > 20013f4: 11 00 80 8f sethi %hi(0x2023c00), %o0
>> > c:\msys\1.0\home\PhilipTeng\app/app.c:194
>> > 20013f8: 11 00 80 8f sethi %hi(0x2023c00), %o0
>> > 20013fc: 40 00 6f 15 call 201d050 <puts>
>> > 2001400: 90 12 23 d0 or %o0, 0x3d0, %o0 ! 2023fd0
>> > <__DTOR_END__+0x300>
>> > c:\msys\1.0\home\PhilipTeng\app/app.c:198
>> > 2001404: 40 00 18 8f call 2007640
>> > <ccsds_initialisePacketLayer>
>> > 2001408: 90 10 20 01 mov 1, %o0
>> > 200140c: 80 a2 20 01 cmp %o0, 1
>> > 2001410: 22 80 00 8b be,a 200163c <Init+0x45c>
>> > 2001414: 11 00 80 8f sethi %hi(0x2023c00), %o0
>> >
>> >
>> > -----Original Message-----
>> > From: Chris Johns [mailto:chrisj at rtems.org]
>> > Sent: Sunday, April 06, 2008 6:01 AM
>> > To: Teng Chee Wan Philip
>> > Cc: rtems-users at rtems.com
>> > Subject: Re: Intermixing source code with disassembly
>> >
>> > Teng Chee Wan Philip wrote:
>> >
>> >> I was trying to disassemble my executable and intermix source
code
>> >>
>> > with
>> >
>> >> the disassembly, but objdump did not managed to find the source
code.
>> >>
>> >
>> >
>> >> Does anyone have any suggestions why this could be so? Are there
any
>> >> limitations on objdump or specific way that objdump uses to
search for
>> >>
>> >
>> >
>> >> the source code?
>> >>
>> >> $ sparc-rtems4.8-objdump -d -S app.exe
>> >>
>> >>
>> >
>> > You might want to check the Debugging Hints page in the Wiki:
>> >
>> >
http://www.rtems.org/wiki/index.php/DebuggingHints#Symbolic_Debug_Inform
>> > ation
>> >
http://www.rtems.org/wiki/index.php/DebuggingHints#GDB_Cannot_Find_My_So
>> > urce_Files
>> >
>> > Let us know if this does not help.
>> >
>> > Regards
>> > Chris
>> >
>> > _______________________________________________
>> > rtems-users mailing list
>> > rtems-users at rtems.com
>> > http://rtems.rtems.org/mailman/listinfo/rtems-users
>> >
>>
>>
>> --
>> Joel Sherrill, Ph.D. Director of Research & Development
>> joel.sherrill at OARcorp.com On-Line Applications Research
>> Ask me about RTEMS: a free RTOS Huntsville AL 35805
>> Support Available (256) 722-9985
>>
>>
>>
>>
------------------------------------------------------------------------
>>
>> _______________________________________________
>> rtems-users mailing list
>> rtems-users at rtems.com
>> http://rtems.rtems.org/mailman/listinfo/rtems-users
>
>
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