/* Data access */ /* $Id$ */ #include #include "logging.h" #include "nofloat.h" #include "global.h" #include "log.h" #include "trap.h" #include "warn.h" #include "alloc.h" #include "memdirect.h" #include "mem.h" #include "shadow.h" #define HEAPSIZE 1000L /* initial heap size */ extern size maxheap; /* from main.c */ #ifdef LOGGING char *data_sh; /* shadowbytes */ #endif /* LOGGING */ PRIVATE warn_dtbits(); init_data(hb) ptr hb; { HB = hb; /* set Heap Base */ HP = HB; /* initialize Heap Pointer */ HL = HB + HEAPSIZE; /* initialize Heap Limit */ data = Malloc((size)p2i(HL), "data space"); #ifdef LOGGING data_sh = Malloc((size)p2i(HL), "shadowspace for data"); dt_clear_area(i2p(0), HL); #endif /* LOGGING */ } /******************************************************** * EM-register division. * ******************************************************** * * * newHP(p) - check and adjust HeapPointer. * * * ********************************************************/ newHP(ap) ptr ap; { register ptr p = ap; if (in_gda(p)) { wtrap(WHPGDA, EHEAP); } if (in_stack(p)) { wtrap(WHPSTACK, EHEAP); } if (!is_wordaligned(p)) { wtrap(WHPODD, EHEAP); } if (maxheap) { /* more than allowed on command line */ if (p - HB > maxheap) { warning(WEHEAP); trap(EHEAP); } } if (p > HL) { /* extend heap space */ HL = i2p(allocfrac(p2i(p)) - 1); data = Realloc(data, (size)(p2i(HL) + 1), "heap space"); #ifdef LOGGING data_sh = Realloc(data_sh, (size)(p2i(HL) + 1), "shadowspace for heap"); #endif /* LOGGING */ } #ifdef LOGGING if (p > HP) { dt_clear_area(HP, p); } #endif /* LOGGING */ HP = p; } /************************************************************************ * Data store division. * ************************************************************************ * * * dt_stdp(addr, p) - STore Data Pointer. * * dt_stn(addr, l, n) - STore N byte integer. * * dt_stw(addr, l) - STore wsize byte integer. * * dt_stf(addr, f, n) - STore n byte Floating point number. * * * ************************************************************************/ dt_stdp(addr, ap) register ptr addr; ptr ap; { register int i; register long p = (long) ap; LOG(("@g6 dt_stdp(%lu, %lu)", addr, p)); ch_in_data(addr, psize); ch_wordaligned(addr); for (i = (int) psize; i > 0; i--, addr++) { ch_dt_prot(addr); data_loc(addr) = (char) (p); dt_dp(addr); p = p>>8; } } dt_stip(addr, ap) register ptr addr; ptr ap; { register int i; register long p = (long) ap; LOG(("@g6 dt_stip(%lu, %lu)", addr, p)); ch_in_data(addr, psize); ch_wordaligned(addr); for (i = (int) psize; i > 0; i--, addr++) { ch_dt_prot(addr); data_loc(addr) = (char) (p); dt_ip(addr); p = p>>8; } } dt_stn(addr, al, n) register ptr addr; long al; size n; { register int i; register long l = al; #ifdef LOGGING /* a psize zero is ambiguous */ int sh_flags = (l == 0 && n == psize) ? (SH_INT|SH_DATAP) : SH_INT; #endif /* LOGGING */ LOG(("@g6 dt_stn(%lu, %lu, %lu)", addr, l, n)); ch_in_data(addr, n); ch_aligned(addr, n); for (i = (int) n; i > 0; i--, addr++) { ch_dt_prot(addr); data_loc(addr) = (char) l; #ifdef LOGGING dt_sh(addr) = sh_flags; #endif /* LOGGING */ l = l>>8; } } dt_stw(addr, al) register ptr addr; long al; { register int i; register long l = al; #ifdef LOGGING /* a psize zero is ambiguous */ int sh_flags = (l == 0 && wsize == psize) ? (SH_INT|SH_DATAP) : SH_INT; #endif /* LOGGING */ LOG(("@g6 dt_stw(%lu, %lu)", addr, l)); ch_in_data(addr, wsize); ch_wordaligned(addr); for (i = (int) wsize; i > 0; i--, addr++) { ch_dt_prot(addr); data_loc(addr) = (char) l; #ifdef LOGGING dt_sh(addr) = sh_flags; #endif /* LOGGING */ l = l>>8; } } #ifndef NOFLOAT dt_stf(addr, f, n) register ptr addr; double f; register size n; { register char *cp = (char *) &f; register int i; float fl; LOG(("@g6 dt_stf(%lu, %g, %lu)", addr, f, n)); ch_in_data(addr, n); ch_wordaligned(addr); if ((int) n == 4) { fl = f; cp = (char *) &fl; } for (i = (int) n; i > 0; i--, addr++) { ch_dt_prot(addr); data_loc(addr) = *cp++; dt_fl(addr); } } #endif /* NOFLOAT */ /************************************************************************ * Data load division. * ************************************************************************ * * * dt_lddp(addr) - LoaD Data Pointer from data. * * dt_ldip(addr) - LoaD Instruction Pointer from data. * * dt_ldu(addr, n) - LoaD n Unsigned bytes from data. * * dt_lduw(addr) - LoaD wsize Unsigned bytes from data. * * dt_lds(addr, n) - LoaD n Signed bytes from data. * * dt_ldsw(addr) - LoaD wsize Signed bytes from data. * * * ************************************************************************/ ptr dt_lddp(addr) register ptr addr; { register ptr p; LOG(("@g6 dt_lddp(%lu)", addr)); ch_in_data(addr, psize); ch_wordaligned(addr); #ifdef LOGGING if (!is_dt_set(addr, psize, SH_DATAP)) { warning(WGDPEXP); warn_dtbits(addr, psize); } #endif /* LOGGING */ p = p_in_data(addr); LOG(("@g6 dt_lddp() returns %lu", p)); return (p); } ptr dt_ldip(addr) register ptr addr; { register ptr p; LOG(("@g6 dt_ldip(%lu)", addr)); ch_in_data(addr, psize); ch_wordaligned(addr); #ifdef LOGGING if (!is_dt_set(addr, psize, SH_INSP)) { warning(WGIPEXP); warn_dtbits(addr, psize); } #endif /* LOGGING */ p = p_in_data(addr); LOG(("@g6 dt_ldip() returns %lu", p)); return (p); } unsigned long dt_ldu(addr, n) register ptr addr; size n; { register int i; register unsigned long u = 0; LOG(("@g6 dt_ldu(%lu, %lu)", addr, n)); ch_in_data(addr, n); ch_aligned(addr, n); #ifdef LOGGING if (!is_dt_set(addr, n, SH_INT)) { warning(n == 1 ? WGCEXP : WGIEXP); warn_dtbits(addr, n); } #endif /* LOGGING */ addr += n-1; for (i = (int) n-1; i >= 0; i--, addr--) { u = (u<<8) | btou(data_loc(addr)); } LOG(("@g6 dt_ldu() returns %lu", u)); return (u); } unsigned long dt_lduw(addr) register ptr addr; { register int i; register unsigned long u = 0; LOG(("@g6 dt_lduw(%lu)", addr)); ch_in_data(addr, wsize); ch_wordaligned(addr); #ifdef LOGGING if (!is_dt_set(addr, wsize, SH_INT)) { warning(WGIEXP); warn_dtbits(addr, wsize); } #endif /* LOGGING */ addr += wsize-1; for (i = (int) wsize-1; i >= 0; i--, addr--) { u = (u<<8) | btou(data_loc(addr)); } LOG(("@g6 dt_lduw() returns %lu", u)); return (u); } long dt_lds(addr, n) register ptr addr; size n; { register int i; register long l; LOG(("@g6 dt_lds(%lu, %lu)", addr, n)); ch_in_data(addr, n); ch_aligned(addr, n); #ifdef LOGGING if (!is_dt_set(addr, n, SH_INT)) { warning(n == 1 ? WGCEXP : WGIEXP); warn_dtbits(addr, n); } #endif /* LOGGING */ addr += n-2; l = btos(data_loc(addr + 1)); for (i = n - 2; i >= 0; i--, addr--) { l = (l<<8) | btol(data_loc(addr)); } LOG(("@g6 dt_lds() returns %lu", l)); return (l); } long dt_ldsw(addr) register ptr addr; { register int i; register long l; LOG(("@g6 dt_ldsw(%lu)", addr)); ch_in_data(addr, wsize); ch_wordaligned(addr); #ifdef LOGGING if (!is_dt_set(addr, wsize, SH_INT)) { warning(WGIEXP); warn_dtbits(addr, wsize); } #endif /* LOGGING */ addr += wsize-2; l = btos(data_loc(addr + 1)); for (i = wsize - 2; i >= 0; i--, addr--) { l = (l<<8) | btol(data_loc(addr)); } LOG(("@g6 dt_ldsw() returns %lu", l)); return (l); } /************************************************************************ * Data move division * ************************************************************************ * * * dt_mvd(d2, d1, n) - Move n bytes in data from d1 to d2. * * dt_mvs(d, s, n) - Move n bytes from s in stack to d in data. * * * * See st_mvs() in stack.c for a description. * * * ************************************************************************/ dt_mvd(d2, d1, n) /* d1 -> d2 */ register ptr d2, d1; size n; { register int i; ch_in_data(d1, n); ch_wordaligned(d1); ch_in_data(d2, n); ch_wordaligned(d2); for (i = (int) n; i > 0; i--, d1++, d2++) { ch_dt_prot(d2); data_loc(d2) = data_loc(d1); #ifdef LOGGING dt_sh(d2) = dt_sh(d1) & ~SH_PROT; #endif /* LOGGING */ } } dt_mvs(d, s, n) /* s -> d */ register ptr d, s; size n; { register int i; ch_in_stack(s, n); ch_wordaligned(s); ch_in_data(d, n); ch_wordaligned(d); for (i = (int) n; i > 0; i--, d++, s++) { ch_dt_prot(d); ch_st_prot(s); data_loc(d) = stack_loc(s); #ifdef LOGGING dt_sh(d) = st_sh(s) & ~SH_PROT; #endif /* LOGGING */ } } #ifdef LOGGING PRIVATE warn_dtbits(addr, n) register ptr addr; register size n; { register int or_bits = 0; register int and_bits = 0xff; while (n--) { or_bits |= dt_sh(addr); and_bits &= dt_sh(addr); addr++; } if (or_bits != and_bits) { /* no use trying to diagnose */ warningcont(WWASMISC); return; } if (or_bits == 0) warningcont(WWASUND); if (or_bits & SH_INT) warningcont(WWASINT); if (or_bits & SH_FLOAT) warningcont(WWASFLOAT); if (or_bits & SH_DATAP) warningcont(WWASDATAP); if (or_bits & SH_INSP) warningcont(WWASINSP); } #endif /* LOGGING */