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#include <arch/types.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#include <typedefs.h>
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#include <align.h>
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#include <align.h>
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#define STACK_ITEM_SIZE 16
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#define STACK_ITEM_SIZE         16
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#define STACK_ALIGNMENT 16
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#define STACK_ALIGNMENT         16
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#define REGISTER_STACK_ALIGNMENT    8
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/*
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/*
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 * context_save() and context_restore() are both leaf procedures.
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 * context_save() and context_restore() are both leaf procedures.
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 * No need to allocate scratch area.
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 * No need to allocate scratch area.
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 *
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 *
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 * One item is put onto the stack to support get_stack_base().
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 * One item is put onto the stack to support get_stack_base().
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 */
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 */
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#define SP_DELTA    (0+STACK_ITEM_SIZE)
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#define SP_DELTA    (0+STACK_ITEM_SIZE)
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#define PFM_MASK    (~0x3fffffffff)
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#ifdef context_set
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#ifdef context_set
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#undef context_set
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#undef context_set
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#endif
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#endif
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#define context_set(c, _pc, stack, size)                        \
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#define context_set(c, _pc, stack, size)                                \
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    (c)->pc = (__address) _pc;                          \
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    (c)->pc = (__address) _pc;                                  \
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    (c)->bsp = ((__address) stack) + ALIGN(sizeof(the_t), STACK_ALIGNMENT);     \
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    (c)->bsp = ((__address) stack) + ALIGN(sizeof(the_t), REGISTER_STACK_ALIGNMENT);        \
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    (c)->ar_pfs &= PFM_MASK;                                    \
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    (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - SP_DELTA;
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    (c)->sp = ((__address) stack) + ALIGN((size), STACK_ALIGNMENT) - SP_DELTA;
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/*
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/*
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 * Only save registers that must be preserved across
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 * Only save registers that must be preserved across
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 * function calls.
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 * function calls.