20 lines
537 B
ArmAsm
20 lines
537 B
ArmAsm
#include "asm.h"
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.section .entry
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.global _entry
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_entry:
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# set up a stack for C.
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# stack0 is declared in start.c,
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# with a 4096-byte stack per CPU.
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# sp = stack0 + (hartid * 4096)
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la.global $sp, stack0
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lu12i.w $a0, (1024*4 >> 12) & 0xfffff
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addi.w $a0, $a0, 1024*4 & 0xfff
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csrrd $a1, CPUID
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addi.w $a1, $a1, 1
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mul.w $a0, $a0, $a1
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add.w $sp, $sp, $a0
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# jump to start() in start.c
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bl start
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spin:
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b spin |