64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
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/*
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Memory access facilities
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*/
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/* $Header$ */
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/******** Memory address & location defines ********/
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#define data_loc(a) (*(data + (p2i(a))))
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#define stack_loc(a) (*(stack + (ML - (a))))
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#define mem_loc(a) (in_stack(a) ? stack_loc(a) : data_loc(a))
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#define loc_addr(o) (((o) < 0) ? (LB + (o)) : (AB + (o)))
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/******** Checks on adresses and ranges ********/
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#define is_aligned(a,n) ((p2i(a)) % (n) == 0)
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#define ch_aligned(a,n) { if (!is_aligned(a, min(n, wsize))) \
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{ trap(EBADPTR); } }
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#define in_gda(p) ((p) < HB)
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#define in_stack(p) (SP <= (p) && (p) <= ML)
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#define is_in_data(a,n) ((a) + (n) <= HP)
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#define ch_in_data(a,n) { if (!is_in_data(a, n)) { trap(EMEMFLT); } }
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#define is_in_stack(a,n) (SP <= (a) && (a) + (n) - 1 <= ML)
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#define ch_in_stack(a,n) { if (!is_in_stack(a, n)) { trap(EMEMFLT); } }
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#define is_in_FRA(a,n) ((a) + (n) <= FRASize)
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/******* Address-depending memory defines *******/
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#define is_in_mem(a,n) (is_in_data(a, n) || is_in_stack(a, n))
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#define mem_stn(a,l,n) { if (in_stack(a)) st_stn(a, l, n); else dt_stn(a, l, n); }
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#define mem_lddp(a) (in_stack(a) ? st_lddp(a) : dt_lddp(a))
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#define mem_ldip(a) (in_stack(a) ? st_ldip(a) : dt_ldip(a))
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#define mem_ldu(a,n) (in_stack(a) ? st_ldu(a, n) : dt_ldu(a, n))
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#define mem_lds(a,n) (in_stack(a) ? st_lds(a, n) : dt_lds(a, n))
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#define push_m(a,n) { if (in_stack(a)) push_st(a, n); else push_dt(a, n); }
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#define pop_m(a,n) { if (in_stack(a)) pop_st(a, n); else pop_dt(a, n); }
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/******** Simple stack manipulation ********/
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#define st_inc(n) newSP(SP - (n)) /* stack grows */
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#define st_dec(n) newSP(SP + (n)) /* stack shrinks */
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/******** Function return types ********/
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extern ptr st_ldip(), dt_ldip();
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extern ptr st_lddp(), dt_lddp(), dppop();
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extern long st_lds(), dt_lds(), spop(), wpop();
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extern unsigned long st_ldu(), dt_ldu(), upop();
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