2 * x86 condition code helpers
4 * Copyright (c) 2003 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #include "exec/helper-proto.h"
23 const uint8_t parity_table[256] = {
24 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
25 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
26 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
27 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
28 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
29 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
30 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
31 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
32 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
33 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
34 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
35 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
36 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
37 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
38 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
39 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
40 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
41 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
42 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
43 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
44 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
45 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
46 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
47 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
48 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
49 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
50 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
51 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
52 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
53 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
54 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
55 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
59 #include "cc_helper_template.h"
63 #include "cc_helper_template.h"
67 #include "cc_helper_template.h"
73 #include "cc_helper_template.h"
78 static target_ulong compute_all_adcx(target_ulong dst, target_ulong src1,
81 return (src1 & ~CC_C) | (dst * CC_C);
84 static target_ulong compute_all_adox(target_ulong dst, target_ulong src1,
87 return (src1 & ~CC_O) | (src2 * CC_O);
90 static target_ulong compute_all_adcox(target_ulong dst, target_ulong src1,
93 return (src1 & ~(CC_C | CC_O)) | (dst * CC_C) | (src2 * CC_O);
96 target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1,
97 target_ulong src2, int op)
100 default: /* should never happen */
109 return compute_all_mulb(dst, src1);
111 return compute_all_mulw(dst, src1);
113 return compute_all_mull(dst, src1);
116 return compute_all_addb(dst, src1);
118 return compute_all_addw(dst, src1);
120 return compute_all_addl(dst, src1);
123 return compute_all_adcb(dst, src1, src2);
125 return compute_all_adcw(dst, src1, src2);
127 return compute_all_adcl(dst, src1, src2);
130 return compute_all_subb(dst, src1);
132 return compute_all_subw(dst, src1);
134 return compute_all_subl(dst, src1);
137 return compute_all_sbbb(dst, src1, src2);
139 return compute_all_sbbw(dst, src1, src2);
141 return compute_all_sbbl(dst, src1, src2);
144 return compute_all_logicb(dst, src1);
146 return compute_all_logicw(dst, src1);
148 return compute_all_logicl(dst, src1);
151 return compute_all_incb(dst, src1);
153 return compute_all_incw(dst, src1);
155 return compute_all_incl(dst, src1);
158 return compute_all_decb(dst, src1);
160 return compute_all_decw(dst, src1);
162 return compute_all_decl(dst, src1);
165 return compute_all_shlb(dst, src1);
167 return compute_all_shlw(dst, src1);
169 return compute_all_shll(dst, src1);
172 return compute_all_sarb(dst, src1);
174 return compute_all_sarw(dst, src1);
176 return compute_all_sarl(dst, src1);
179 return compute_all_bmilgb(dst, src1);
181 return compute_all_bmilgw(dst, src1);
183 return compute_all_bmilgl(dst, src1);
186 return compute_all_adcx(dst, src1, src2);
188 return compute_all_adox(dst, src1, src2);
190 return compute_all_adcox(dst, src1, src2);
194 return compute_all_mulq(dst, src1);
196 return compute_all_addq(dst, src1);
198 return compute_all_adcq(dst, src1, src2);
200 return compute_all_subq(dst, src1);
202 return compute_all_sbbq(dst, src1, src2);
204 return compute_all_logicq(dst, src1);
206 return compute_all_incq(dst, src1);
208 return compute_all_decq(dst, src1);
210 return compute_all_shlq(dst, src1);
212 return compute_all_sarq(dst, src1);
214 return compute_all_bmilgq(dst, src1);
219 uint32_t cpu_cc_compute_all(CPUX86State *env, int op)
221 return helper_cc_compute_all(CC_DST, CC_SRC, CC_SRC2, op);
224 target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1,
225 target_ulong src2, int op)
228 default: /* should never happen */
265 return compute_c_addb(dst, src1);
267 return compute_c_addw(dst, src1);
269 return compute_c_addl(dst, src1);
272 return compute_c_adcb(dst, src1, src2);
274 return compute_c_adcw(dst, src1, src2);
276 return compute_c_adcl(dst, src1, src2);
279 return compute_c_subb(dst, src1);
281 return compute_c_subw(dst, src1);
283 return compute_c_subl(dst, src1);
286 return compute_c_sbbb(dst, src1, src2);
288 return compute_c_sbbw(dst, src1, src2);
290 return compute_c_sbbl(dst, src1, src2);
293 return compute_c_shlb(dst, src1);
295 return compute_c_shlw(dst, src1);
297 return compute_c_shll(dst, src1);
300 return compute_c_bmilgb(dst, src1);
302 return compute_c_bmilgw(dst, src1);
304 return compute_c_bmilgl(dst, src1);
308 return compute_c_addq(dst, src1);
310 return compute_c_adcq(dst, src1, src2);
312 return compute_c_subq(dst, src1);
314 return compute_c_sbbq(dst, src1, src2);
316 return compute_c_shlq(dst, src1);
318 return compute_c_bmilgq(dst, src1);
323 void helper_write_eflags(CPUX86State *env, target_ulong t0,
324 uint32_t update_mask)
326 cpu_load_eflags(env, t0, update_mask);
329 target_ulong helper_read_eflags(CPUX86State *env)
333 eflags = cpu_cc_compute_all(env, CC_OP);
334 eflags |= (env->df & DF_MASK);
335 eflags |= env->eflags & ~(VM_MASK | RF_MASK);
339 void helper_clts(CPUX86State *env)
341 env->cr[0] &= ~CR0_TS_MASK;
342 env->hflags &= ~HF_TS_MASK;
345 void helper_reset_rf(CPUX86State *env)
347 env->eflags &= ~RF_MASK;
350 void helper_cli(CPUX86State *env)
352 env->eflags &= ~IF_MASK;
355 void helper_sti(CPUX86State *env)
357 env->eflags |= IF_MASK;
360 void helper_clac(CPUX86State *env)
362 env->eflags &= ~AC_MASK;
365 void helper_stac(CPUX86State *env)
367 env->eflags |= AC_MASK;
371 /* vm86plus instructions */
372 void helper_cli_vm(CPUX86State *env)
374 env->eflags &= ~VIF_MASK;
377 void helper_sti_vm(CPUX86State *env)
379 env->eflags |= VIF_MASK;
380 if (env->eflags & VIP_MASK) {
381 raise_exception(env, EXCP0D_GPF);
386 void helper_set_inhibit_irq(CPUX86State *env)
388 env->hflags |= HF_INHIBIT_IRQ_MASK;
391 void helper_reset_inhibit_irq(CPUX86State *env)
393 env->hflags &= ~HF_INHIBIT_IRQ_MASK;