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https://opencores.org/ocsvn/eco32/eco32/trunk
Subversion Repositories eco32
[/] [eco32/] [tags/] [eco32-0.26/] [stdalone/] [bottles/] [start.s] - Rev 282
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; ; start.s -- startup code ; .import main .import _ecode .import _edata .import _ebss .export _bcode .export _bdata .export _bbss .code _bcode: .data _bdata: .bss _bbss: .code start: mvfs $8,0 or $8,$8,1 << 27 ; let vector point to RAM mvts $8,0 add $29,$0,stack ; set sp add $10,$0,_bdata ; copy data segment add $8,$0,_edata sub $9,$8,$10 add $9,$9,_ecode j cpytest cpyloop: ldw $11,$9,0 stw $11,$8,0 cpytest: sub $8,$8,4 sub $9,$9,4 bgeu $8,$10,cpyloop add $8,$0,_bbss ; clear bss add $9,$0,_ebss j clrtest clrloop: stw $0,$8,0 add $8,$8,4 clrtest: bltu $8,$9,clrloop jal main ; call 'main' start1: j start1 ; loop .bss .align 4 .space 0x800 stack:
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