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59 lines
739 B
ArmAsm
59 lines
739 B
ArmAsm
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.section .text
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.align 4
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.global _start
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.extern main
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.extern _sysstack_start
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.extern _bss_start
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.extern _bss_end
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_start:
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csrr t0, mhartid
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bne t0, zero, 1f
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li x1, 0
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li x2, 0
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li x3, 0
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li x4, 0
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li x5, 0
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li x6, 0
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li x7, 0
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li x8, 0
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li x9, 0
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li x10, 0
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li x11, 0
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li x12, 0
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li x13, 0
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li x14, 0
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li x15, 0
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li x16, 0
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li x17, 0
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li x18, 0
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li x19, 0
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li x20, 0
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li x21, 0
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li x22, 0
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li x23, 0
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li x24, 0
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li x25, 0
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li x26, 0
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li x27, 0
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li x28, 0
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li x29, 0
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li x30, 0
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li x31, 0
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la t0, _sysstack_start
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li t1, 0x1000
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add sp, t0, t1
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la t0, _bss_start
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la t1, _bss_end
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_bss_clean_start:
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bgeu t0, t1, _bss_clean_end
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sb zero, 0(t0)
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addi t0, t0, 1
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j _bss_clean_start
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_bss_clean_end:
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call main
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1:
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/* todo smp */
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wfi
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j 1b
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