toolchain/gcc/newlib/libc/sys/sysnec810/crt0.s

   1         .set    STACKTOP, 0x100000
   2
   3         .extern __tp_TEXT, 4
   4         .extern __gp_DATA, 4
   5         .extern _main
   6         .globl  __start
   7         .globl  _exit
   8         .globl  __exit
   9
  10         .text
  11 __start:
  12         mov     2, r10                  -- set Cache Control Word
  13         ldsr    r10, 24                 --
  14 #
  15         mov     STACKTOP, sp            -- set stack pointer
  16         mov     #__tp_TEXT, tp          -- set tp register
  17         mov     #__gp_DATA, gp          -- set gp register offset
  18         add     tp, gp                  -- set gp register
  19         jal     _main                   -- call main function
  20 __exit:
  21         halt                            -- end of the program
  22