51 lines
721 B
ArmAsm
51 lines
721 B
ArmAsm
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AREA |.text|, CODE, READONLY, ALIGN=2
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THUMB
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REQUIRE8
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PRESERVE8
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;指针调用会使用LDR指令，通过解析这个指令使用的寄存器
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;可以从这个寄存器得到类的基地址
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;在调用这个函数之前，调用者会压栈，此时LR已经不是之前的值
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;所以只能解析PHSH指令，找到栈中存储的LR值
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__self_pointer PROC
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EXPORT __self_pointer
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MOV R0,LR
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LDRH R0,[R0,#-2]
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BX LR
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ENDP
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__interrupt_disable PROC
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EXPORT __interrupt_disable
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MRS r0, PRIMASK
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CPSID I
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BX LR
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ENDP
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__interrupt_enable PROC
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EXPORT __interrupt_enable
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MSR PRIMASK, r0
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BX LR
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ENDP
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__set_msp PROC
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EXPORT __set_msp
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MSR msp, r0
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BX lr
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ENDP
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ALIGN 4
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END
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