阅读背景:

使用带有立即值的指令的GCC内联汇编

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The problem

I'm working on a custom OS for an ARM Cortex-M3 processor. To interact with my kernel, user threads have to generate a SuperVisor Call (SVC) instruction (previously known as SWI, for SoftWare Interrupt). The definition of this instruction in the ARM ARM is: I'm working on a custom OS for an




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