64bit gcc compilation - big files

old:
gcc -D_FILE_OFFSET_BITS=64 -o apollo_64bit_alpha_ver apollo_64bit_alpha_ver.c
new:
gcc -o -m32 memtest_regrw memtest_regrw.c -D_LARGEFILE64_SOURCE

[user@work-vm bin]$ ./mips-mti-elf-objdump -b binary -mmips:isa32 -EL -D ~/br_rotate.bin

/home/user/br_rotate.bin:     file format binary


Disassembly of section .data:

00000000 <.data>:
   0:   00000000        nop
   4:   3c091234        lui     t1,0x1234
   8:   35295678        ori     t1,t1,0x5678
   c:   3c0ae100        lui     t2,0xe100
  10:   354a0008        ori     t2,t2,0x8
  14:   ad490000        sw      t1,0(t2)
  18:   00000000        nop
  1c:   8d4b0000        lw      t3,0(t2)
  20:   112b0004        beq     t1,t3,0x34
  24:   00000000        nop
  28:   00000000        nop
  2c:   0bf0000a        j       0xfc00028
  30:   00000000        nop
  34:   00000000        nop
  38:   0bf0000a        j       0xfc00028
  3c:   00000000        nop