47 lines
579 B
ArmAsm
47 lines
579 B
ArmAsm
.section .init;
|
|
.globl _start;
|
|
.type _start,@function
|
|
|
|
|
|
_start:
|
|
j _reset_handler
|
|
|
|
_reset_handler:
|
|
.option push
|
|
.option norelax
|
|
la gp, __global_pointer$
|
|
.option pop
|
|
la sp, _sp
|
|
li x26, 0x00
|
|
li x27, 0x00
|
|
|
|
/* Load data section */
|
|
la a0, _data_lma
|
|
la a1, _data
|
|
la a2, _edata
|
|
bgeu a1, a2, 2f
|
|
1:
|
|
lw t0, (a0)
|
|
sw t0, (a1)
|
|
addi a0, a0, 4
|
|
addi a1, a1, 4
|
|
bltu a1, a2, 1b
|
|
2:
|
|
|
|
/* Clear bss section */
|
|
la a0, __bss_start
|
|
la a1, _end
|
|
bgeu a0, a1, 2f
|
|
1:
|
|
sw zero, (a0)
|
|
addi a0, a0, 4
|
|
bltu a0, a1, 1b
|
|
2:
|
|
|
|
call main
|
|
|
|
li x26, 0x01
|
|
|
|
loop:
|
|
j loop
|