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void asm_delay_loop(__u32 t);
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void asm_delay_loop(__u32 t);
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void asm_fake_loop(__u32 t);
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void asm_fake_loop(__u32 t);
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/** Return base address of current stack.
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 *
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 * Return the base address of the current stack.
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 * The stack is assumed to be STACK_SIZE bytes long.
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 * The stack must start on page boundary.
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 */
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static inline __address get_stack_base(void)
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static inline __address get_stack_base(void)
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{
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{
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    __address v;
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    __address v;
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    __asm__ volatile ("andq %%rsp, %0\n" : "=r" (v) : "0" (~((__u64)STACK_SIZE-1)));
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    __asm__ volatile ("andq %%rsp, %0\n" : "=r" (v) : "0" (~((__u64)STACK_SIZE-1)));