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https://github.com/Asraelite/littlebigcomputer.git
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62 lines
705 B
Text
62 lines
705 B
Text
li x0, program_end
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li x1, 512
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mv x2, x0
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.align 2
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loop_write_word:
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xori x3, x2, 0xaaa
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sw x3, 0(x2)
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addi x2, x2, 1
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blt x2, x1, loop_write_word
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mv x2, x0
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.align 2
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loop_read_word:
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xori x3, x2, 0xaaa
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lw x4, 0(x2)
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bne x3, x4, error
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addi x2, x2, 1
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blt x2, x1, loop_read_word
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.align 2
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loop_write_double:
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xori x6, x2, 0xaaa
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xori x7, x2, 0x555
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sd x67, 0(x2)
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addi x2, x2, 2
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blt x2, x1, loop_write_double
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mv x2, x0
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.align 2
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loop_read_double:
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xori x6, x2, 0xaaa
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xori x7, x2, 0x555
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ld x45, 0(x2)
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bne x4, x6, error
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bne x5, x7, error
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lw x4, 0(x2)
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bne x4, x6, error
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lw x5, 1(x2)
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bne x5, x7, error
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addi x2, x2, 2
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blt x2, x1, loop_read_double
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success:
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li x0, 0
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wfi
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error:
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mv x0, x2
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wfi
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.align 2
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program_end:
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