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* Stack walking helpers for native stack GC procedures.
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#ifndef HIPE_SPARC_GC_H
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#define HIPE_SPARC_GC_H
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struct nstack_walk_state {
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const struct sdesc *sdesc0; /* .sdesc0 must be a pointer rvalue */
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static inline int nstack_walk_init_check(const Process *p)
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return p->hipe.nra ? 1 : 0;
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static inline Eterm *nstack_walk_nsp_begin(const Process *p)
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return p->hipe.nsp - 1;
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static inline const struct sdesc*
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nstack_walk_init_sdesc(const Process *p, struct nstack_walk_state *state)
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const struct sdesc *sdesc = hipe_find_sdesc((unsigned long)p->hipe.nra);
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state->sdesc0 = sdesc;
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static inline void nstack_walk_update_trap(Process *p, const struct sdesc *sdesc0)
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hipe_update_stack_trap(p, sdesc0);
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static inline Eterm *nstack_walk_nsp_end(const Process *p)
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return p->hipe.nstack;
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static inline void nstack_walk_kill_trap(Process *p, Eterm *nsp_end)
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/* remove gray/white boundary trap */
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if( (unsigned long)p->hipe.nra == (unsigned long)nbif_stack_trap_ra ) {
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p->hipe.nra = p->hipe.ngra;
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if( nsp_end[0] == (unsigned long)nbif_stack_trap_ra ) {
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nsp_end[0] = (unsigned long)p->hipe.ngra;
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static inline int nstack_walk_gray_passed_black(const Eterm *gray, const Eterm *black)
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static inline int nstack_walk_nsp_reached_end(const Eterm *nsp, const Eterm *nsp_end)
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return nsp <= nsp_end;
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static inline unsigned int nstack_walk_frame_size(const struct sdesc *sdesc)
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return sdesc_fsize(sdesc) + sdesc_arity(sdesc);
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static inline Eterm *nstack_walk_frame_index(Eterm *nsp, unsigned int i)
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static inline unsigned long
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nstack_walk_frame_ra(const Eterm *nsp, const struct sdesc *sdesc)
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return nsp[1-sdesc_fsize(sdesc)];
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static inline Eterm *nstack_walk_next_frame(Eterm *nsp, unsigned int sdesc_size)
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return nsp - sdesc_size;
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#endif /* HIPE_SPARC_GC_H */