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 *
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 *
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 * One item is put onto stack to support get_stack_base().
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 * One item is put onto stack to support get_stack_base().
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 */
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 */
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#define SP_DELTA    (8+STACK_ITEM_SIZE)
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#define SP_DELTA    (8+STACK_ITEM_SIZE)
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/*
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 * Only save registers that must be preserved across
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 * function calls.
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 */
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struct context {
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struct context {
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    __u32 sp;
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    __u32 sp;
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    __u32 pc;
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    __u32 pc;
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    __u32 ebx;
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    __u32 ebx;
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    __u32 esi;
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    __u32 esi;