how to change default stack size...

方法一:

gcc -Wl,--defsym,__stacksize=0x80000 -o foo foo.c

方法二:

peter@team-server:sbin$ arm-elf-readelf -l foo

Elf file type is EXEC (Executable file)

Entry point 0x37fc

There are 6 program headers, starting at offset 52

Program Headers:

  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align

  PHDR           0x000034 0x00000034 0x00000034 0x000c0 0x000c0 R E 0x4

  INTERP         0x0000f4 0x000000f4 0x000000f4 0x00014 0x00014 R   0x1

      [Requesting program interpreter: /lib/ld-uClibc.so.0]

  LOAD           0x000000 0x00000000 0x00000000 0x1f668 0x1f668 R E 0x1000

  LOAD           0x01f668 0x00020668 0x00020668 0x0b718 0x0ba98 RW  0x1000

  DYNAMIC        0x01f67c 0x0002067c 0x0002067c 0x000c8 0x000c8 RW  0x4

  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x20000 RWE 0x8 //原來的stack為256KB

 Section to Segment mapping:

  Segment Sections...

   00

   01     .interp

   02     .interp .hash .dynsym .dynstr .rel.dyn .rel.plt .init .plt .text .fini .rofixup

   03     .ctors .dtors .jcr .dynamic .data .got .bss

   04     .dynamic

   05

peter@team-server:sbin$

peter@team-server:sbin$ ../../../fdpichdr/fdpichdr -s 0x100000  foo

peter@team-server:sbin$ arm-elf-readelf -l foo

Elf file type is EXEC (Executable file)

Entry point 0x37fc

There are 6 program headers, starting at offset 52

Program Headers:

  Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align

  PHDR           0x000034 0x00000034 0x00000034 0x000c0 0x000c0 R E 0x4

  INTERP         0x0000f4 0x000000f4 0x000000f4 0x00014 0x00014 R   0x1

      [Requesting program interpreter: /lib/ld-uClibc.so.0]

  LOAD           0x000000 0x00000000 0x00000000 0x1f668 0x1f668 R E 0x1000

  LOAD           0x01f668 0x00020668 0x00020668 0x0b718 0x0ba98 RW  0x1000

  DYNAMIC        0x01f67c 0x0002067c 0x0002067c 0x000c8 0x000c8 RW  0x4

  GNU_STACK      0x000000 0x00000000 0x00000000 0x00000 0x100000 RWE 0x8    //現在有1MB

 Section to Segment mapping:

  Segment Sections...

   00

   01     .interp

   02     .interp .hash .dynsym .dynstr .rel.dyn .rel.plt .init .plt .text .fini .rofixup

   03     .ctors .dtors .jcr .dynamic .data .got .bss

   04     .dynamic

   05     .bss