tinyriscv/tests/example/simple/start.S

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