5 /* $Id: data.c,v 2.5 1994/06/24 10:45:49 ceriel Exp $ */
15 #include "memdirect.h"
19 #define HEAPSIZE 1000L /* initial heap size */
21 extern size maxheap; /* from main.c */
24 char *data_sh; /* shadowbytes */
27 PRIVATE warn_dtbits();
32 HB = hb; /* set Heap Base */
33 HP = HB; /* initialize Heap Pointer */
34 HL = HB + HEAPSIZE; /* initialize Heap Limit */
36 data = Malloc((size)p2i(HL), "data space");
38 data_sh = Malloc((size)p2i(HL), "shadowspace for data");
39 dt_clear_area(i2p(0), HL);
44 /********************************************************
45 * EM-register division. *
46 ********************************************************
48 * newHP(p) - check and adjust HeapPointer. *
50 ********************************************************/
61 wtrap(WHPSTACK, EHEAP);
63 if (!is_wordaligned(p)) {
67 /* more than allowed on command line */
68 if (p - HB > maxheap) {
74 /* extend heap space */
75 HL = i2p(allocfrac(p2i(p)) - 1);
76 data = Realloc(data, (size)(p2i(HL) + 1), "heap space");
78 data_sh = Realloc(data_sh, (size)(p2i(HL) + 1),
79 "shadowspace for heap");
91 /************************************************************************
92 * Data store division. *
93 ************************************************************************
95 * dt_stdp(addr, p) - STore Data Pointer. *
96 * dt_stn(addr, l, n) - STore N byte integer. *
97 * dt_stw(addr, l) - STore wsize byte integer. *
98 * dt_stf(addr, f, n) - STore n byte Floating point number. *
100 ************************************************************************/
107 register long p = (long) ap;
109 LOG(("@g6 dt_stdp(%lu, %lu)", addr, p));
110 ch_in_data(addr, psize);
111 ch_wordaligned(addr);
112 for (i = (int) psize; i > 0; i--, addr++) {
114 data_loc(addr) = (char) (p);
125 register long p = (long) ap;
127 LOG(("@g6 dt_stip(%lu, %lu)", addr, p));
128 ch_in_data(addr, psize);
129 ch_wordaligned(addr);
130 for (i = (int) psize; i > 0; i--, addr++) {
132 data_loc(addr) = (char) (p);
144 register long l = al;
146 /* a psize zero is ambiguous */
147 int sh_flags = (l == 0 && n == psize) ? (SH_INT|SH_DATAP) : SH_INT;
150 LOG(("@g6 dt_stn(%lu, %lu, %lu)", addr, l, n));
153 for (i = (int) n; i > 0; i--, addr++) {
155 data_loc(addr) = (char) l;
157 dt_sh(addr) = sh_flags;
168 register long l = al;
170 /* a psize zero is ambiguous */
171 int sh_flags = (l == 0 && wsize == psize) ? (SH_INT|SH_DATAP) : SH_INT;
174 LOG(("@g6 dt_stw(%lu, %lu)", addr, l));
175 ch_in_data(addr, wsize);
176 ch_wordaligned(addr);
177 for (i = (int) wsize; i > 0; i--, addr++) {
179 data_loc(addr) = (char) l;
181 dt_sh(addr) = sh_flags;
193 register char *cp = (char *) &f;
197 LOG(("@g6 dt_stf(%lu, %g, %lu)", addr, f, n));
199 ch_wordaligned(addr);
204 for (i = (int) n; i > 0; i--, addr++) {
206 data_loc(addr) = *cp++;
212 /************************************************************************
213 * Data load division. *
214 ************************************************************************
216 * dt_lddp(addr) - LoaD Data Pointer from data. *
217 * dt_ldip(addr) - LoaD Instruction Pointer from data. *
218 * dt_ldu(addr, n) - LoaD n Unsigned bytes from data. *
219 * dt_lduw(addr) - LoaD wsize Unsigned bytes from data. *
220 * dt_lds(addr, n) - LoaD n Signed bytes from data. *
221 * dt_ldsw(addr) - LoaD wsize Signed bytes from data. *
223 ************************************************************************/
230 LOG(("@g6 dt_lddp(%lu)", addr));
232 ch_in_data(addr, psize);
233 ch_wordaligned(addr);
235 if (!is_dt_set(addr, psize, SH_DATAP)) {
237 warn_dtbits(addr, psize);
242 LOG(("@g6 dt_lddp() returns %lu", p));
251 LOG(("@g6 dt_ldip(%lu)", addr));
253 ch_in_data(addr, psize);
254 ch_wordaligned(addr);
256 if (!is_dt_set(addr, psize, SH_INSP)) {
258 warn_dtbits(addr, psize);
263 LOG(("@g6 dt_ldip() returns %lu", p));
267 unsigned long dt_ldu(addr, n)
272 register unsigned long u = 0;
274 LOG(("@g6 dt_ldu(%lu, %lu)", addr, n));
279 if (!is_dt_set(addr, n, SH_INT)) {
280 warning(n == 1 ? WGCEXP : WGIEXP);
281 warn_dtbits(addr, n);
286 for (i = (int) n-1; i >= 0; i--, addr--) {
287 u = (u<<8) | btou(data_loc(addr));
289 LOG(("@g6 dt_ldu() returns %lu", u));
293 unsigned long dt_lduw(addr)
297 register unsigned long u = 0;
299 LOG(("@g6 dt_lduw(%lu)", addr));
301 ch_in_data(addr, wsize);
302 ch_wordaligned(addr);
304 if (!is_dt_set(addr, wsize, SH_INT)) {
306 warn_dtbits(addr, wsize);
311 for (i = (int) wsize-1; i >= 0; i--, addr--) {
312 u = (u<<8) | btou(data_loc(addr));
314 LOG(("@g6 dt_lduw() returns %lu", u));
325 LOG(("@g6 dt_lds(%lu, %lu)", addr, n));
330 if (!is_dt_set(addr, n, SH_INT)) {
331 warning(n == 1 ? WGCEXP : WGIEXP);
332 warn_dtbits(addr, n);
337 l = btos(data_loc(addr + 1));
338 for (i = n - 2; i >= 0; i--, addr--) {
339 l = (l<<8) | btol(data_loc(addr));
341 LOG(("@g6 dt_lds() returns %lu", l));
351 LOG(("@g6 dt_ldsw(%lu)", addr));
353 ch_in_data(addr, wsize);
354 ch_wordaligned(addr);
356 if (!is_dt_set(addr, wsize, SH_INT)) {
358 warn_dtbits(addr, wsize);
363 l = btos(data_loc(addr + 1));
364 for (i = wsize - 2; i >= 0; i--, addr--) {
365 l = (l<<8) | btol(data_loc(addr));
367 LOG(("@g6 dt_ldsw() returns %lu", l));
371 /************************************************************************
372 * Data move division *
373 ************************************************************************
375 * dt_mvd(d2, d1, n) - Move n bytes in data from d1 to d2. *
376 * dt_mvs(d, s, n) - Move n bytes from s in stack to d in data. *
378 * See st_mvs() in stack.c for a description. *
380 ************************************************************************/
382 dt_mvd(d2, d1, n) /* d1 -> d2 */
393 for (i = (int) n; i > 0; i--, d1++, d2++) {
395 data_loc(d2) = data_loc(d1);
397 dt_sh(d2) = dt_sh(d1) & ~SH_PROT;
402 dt_mvs(d, s, n) /* s -> d */
413 for (i = (int) n; i > 0; i--, d++, s++) {
416 data_loc(d) = stack_loc(s);
418 dt_sh(d) = st_sh(s) & ~SH_PROT;
425 PRIVATE warn_dtbits(addr, n)
429 register int or_bits = 0;
430 register int and_bits = 0xff;
433 or_bits |= dt_sh(addr);
434 and_bits &= dt_sh(addr);
438 if (or_bits != and_bits) {
439 /* no use trying to diagnose */
440 warningcont(WWASMISC);
444 warningcont(WWASUND);
445 if (or_bits & SH_INT)
446 warningcont(WWASINT);
447 if (or_bits & SH_FLOAT)
448 warningcont(WWASFLOAT);
449 if (or_bits & SH_DATAP)
450 warningcont(WWASDATAP);
451 if (or_bits & SH_INSP)
452 warningcont(WWASINSP);