objdump produced different results for Ubuntu and Windows

[Helen Tang]

I'm using 32-bit. Here are some of the differences:

***** dhry21.dump
                  CONTENTS, READONLY, DEBUGGING
 12 .debug_line   00002562  00000000  00000000  0000b06e  2**0
                  CONTENTS, READONLY, DEBUGGING
 13 .debug_str    00000c0a  00000000  00000000  0000d5d0  2**0
                  CONTENTS, READONLY, DEBUGGING
 14 .debug_ranges 00000040  00000000  00000000  0000e1da  2**0
                  CONTENTS, READONLY, DEBUGGING
***** DHRY21_PC.DUMP
                  CONTENTS, READONLY, DEBUGGING
 12 .debug_line   0000243c  00000000  00000000  0000b06e  2**0
                  CONTENTS, READONLY, DEBUGGING
 13 .debug_str    00000bd2  00000000  00000000  0000d4aa  2**0
                  CONTENTS, READONLY, DEBUGGING
 14 .debug_ranges 00000040  00000000  00000000  0000e07c  2**0
                  CONTENTS, READONLY, DEBUGGING
*****

***** dhry21.dump
       a:       0104                    mv      sp,ra
       c:       031a                    j       192 <_ftext-0x1e6e>
       e:       0000                    unimp
      10:       db0c                    lw      a1,48(a4)
      12:       0001                    0x1
      14:       b000                    fld     s0,32(s0)
***** DHRY21_PC.DUMP
       a:       0104                    mv      sp,ra
       c:       0312                    j       190 <_ftext-0x1e70>
       e:       0000                    unimp
      10:       110c                    add     sp,sp,gp
      12:       0002                    j       12 <_ftext-0x1fee>
      14:       b000                    fld     s0,32(s0)
*****

***** dhry21.dump
      26:       0074                    0x74
      28:       00043d03                0x43d03
      2c:       0200                    jr      tp
***** DHRY21_PC.DUMP
      26:       0074                    0x74
      28:       00043503                0x43503
      2c:       0200                    jr      tp
*****

***** dhry21.dump
      42:       0408                    mv      s0,sp
      44:       0262                    j       15c <_ftext-0x1ea4>
      46:       0000                    unimp
***** DHRY21_PC.DUMP
      42:       0408                    mv      s0,sp
      44:       01fe                    j       142 <_ftext-0x1ebe>
      46:       0000                    unimp
*****

***** dhry21.dump
      48:       0104                    mv      sp,ra
      4a:       c506                    addi    a0,a0,1
      4c:       0002                    j       4c <_ftext-0x1fb4>
***** DHRY21_PC.DUMP
      48:       0104                    mv      sp,ra
      4a:       bd06                    lui     s10,0xfffe1
      4c:       0002                    j       4c <_ftext-0x1fb4>
*****

On Wed, Sep 30, 2015 at 3:02 AM,  <johnsfine@verizon.net> wrote:
>  What difference do you mean and are you using 64-bit or 32-bit.
>
> I'd expect either to be different and would not know how to fix that for 32-bit if it is different.
>
> But for 64-bit it would not be correct to make them the same, even if you knew how.    Windows uses its own ABI for x86-64 and not the original standard ABI that Linux uses.
>
>
> On 09/29/15, Helen Tang wrote:
>
> I built a gcc toolchain with same target and architecture on Ubuntu
> and on Windows(Cygwin). The results from objdump are different. Is
> there a way to make
> them the same?
>
> Thanks,
>
> Helen