root / target-m68k / helper.c @ f97572e5
History | View | Annotate | Download (21.6 kB)
1 | e6e5906b | pbrook | /*
|
---|---|---|---|
2 | e6e5906b | pbrook | * m68k op helpers
|
3 | 5fafdf24 | ths | *
|
4 | 0633879f | pbrook | * Copyright (c) 2006-2007 CodeSourcery
|
5 | e6e5906b | pbrook | * Written by Paul Brook
|
6 | e6e5906b | pbrook | *
|
7 | e6e5906b | pbrook | * This library is free software; you can redistribute it and/or
|
8 | e6e5906b | pbrook | * modify it under the terms of the GNU Lesser General Public
|
9 | e6e5906b | pbrook | * License as published by the Free Software Foundation; either
|
10 | e6e5906b | pbrook | * version 2 of the License, or (at your option) any later version.
|
11 | e6e5906b | pbrook | *
|
12 | e6e5906b | pbrook | * This library is distributed in the hope that it will be useful,
|
13 | e6e5906b | pbrook | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
14 | e6e5906b | pbrook | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
15 | e6e5906b | pbrook | * General Public License for more details.
|
16 | e6e5906b | pbrook | *
|
17 | e6e5906b | pbrook | * You should have received a copy of the GNU Lesser General Public
|
18 | e6e5906b | pbrook | * License along with this library; if not, write to the Free Software
|
19 | e6e5906b | pbrook | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
20 | e6e5906b | pbrook | */
|
21 | e6e5906b | pbrook | |
22 | e6e5906b | pbrook | #include <stdio.h> |
23 | 0402f767 | pbrook | #include <string.h> |
24 | e6e5906b | pbrook | |
25 | e6e5906b | pbrook | #include "config.h" |
26 | e6e5906b | pbrook | #include "cpu.h" |
27 | e6e5906b | pbrook | #include "exec-all.h" |
28 | ca10f867 | aurel32 | #include "qemu-common.h" |
29 | e6e5906b | pbrook | |
30 | e1f3808e | pbrook | #include "helpers.h" |
31 | e1f3808e | pbrook | |
32 | e1f3808e | pbrook | #define SIGNBIT (1u << 31) |
33 | e1f3808e | pbrook | |
34 | 0402f767 | pbrook | enum m68k_cpuid {
|
35 | 0402f767 | pbrook | M68K_CPUID_M5206, |
36 | 20dcee94 | pbrook | M68K_CPUID_M5208, |
37 | 0402f767 | pbrook | M68K_CPUID_CFV4E, |
38 | 0402f767 | pbrook | M68K_CPUID_ANY, |
39 | 0402f767 | pbrook | }; |
40 | 0402f767 | pbrook | |
41 | aaed909a | bellard | typedef struct m68k_def_t m68k_def_t; |
42 | aaed909a | bellard | |
43 | 0402f767 | pbrook | struct m68k_def_t {
|
44 | 0402f767 | pbrook | const char * name; |
45 | 0402f767 | pbrook | enum m68k_cpuid id;
|
46 | 0402f767 | pbrook | }; |
47 | 0402f767 | pbrook | |
48 | 0402f767 | pbrook | static m68k_def_t m68k_cpu_defs[] = {
|
49 | 5fafdf24 | ths | {"m5206", M68K_CPUID_M5206},
|
50 | 5fafdf24 | ths | {"m5208", M68K_CPUID_M5208},
|
51 | 0402f767 | pbrook | {"cfv4e", M68K_CPUID_CFV4E},
|
52 | 0402f767 | pbrook | {"any", M68K_CPUID_ANY},
|
53 | 5fafdf24 | ths | {NULL, 0}, |
54 | 0402f767 | pbrook | }; |
55 | 0402f767 | pbrook | |
56 | 0402f767 | pbrook | static void m68k_set_feature(CPUM68KState *env, int feature) |
57 | 0402f767 | pbrook | { |
58 | 0402f767 | pbrook | env->features |= (1u << feature);
|
59 | 0402f767 | pbrook | } |
60 | 0402f767 | pbrook | |
61 | aaed909a | bellard | static int cpu_m68k_set_model(CPUM68KState *env, const char *name) |
62 | 0402f767 | pbrook | { |
63 | 0402f767 | pbrook | m68k_def_t *def; |
64 | 0402f767 | pbrook | |
65 | 0402f767 | pbrook | for (def = m68k_cpu_defs; def->name; def++) {
|
66 | 0402f767 | pbrook | if (strcmp(def->name, name) == 0) |
67 | 0402f767 | pbrook | break;
|
68 | 0402f767 | pbrook | } |
69 | 0402f767 | pbrook | if (!def->name)
|
70 | aaed909a | bellard | return -1; |
71 | 0402f767 | pbrook | |
72 | 0402f767 | pbrook | switch (def->id) {
|
73 | 0402f767 | pbrook | case M68K_CPUID_M5206:
|
74 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
75 | 0402f767 | pbrook | break;
|
76 | 20dcee94 | pbrook | case M68K_CPUID_M5208:
|
77 | 20dcee94 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
78 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); |
79 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_BRAL); |
80 | 20dcee94 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); |
81 | 20dcee94 | pbrook | m68k_set_feature(env, M68K_FEATURE_USP); |
82 | 20dcee94 | pbrook | break;
|
83 | 0402f767 | pbrook | case M68K_CPUID_CFV4E:
|
84 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
85 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); |
86 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_BRAL); |
87 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_FPU); |
88 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); |
89 | 20dcee94 | pbrook | m68k_set_feature(env, M68K_FEATURE_USP); |
90 | 0402f767 | pbrook | break;
|
91 | 0402f767 | pbrook | case M68K_CPUID_ANY:
|
92 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_A); |
93 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_B); |
94 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC); |
95 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_BRAL); |
96 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_FPU); |
97 | acf930aa | pbrook | /* MAC and EMAC are mututally exclusive, so pick EMAC.
|
98 | acf930aa | pbrook | It's mostly backwards compatible. */
|
99 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_EMAC); |
100 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B); |
101 | 20dcee94 | pbrook | m68k_set_feature(env, M68K_FEATURE_USP); |
102 | 0402f767 | pbrook | m68k_set_feature(env, M68K_FEATURE_EXT_FULL); |
103 | d315c888 | pbrook | m68k_set_feature(env, M68K_FEATURE_WORD_INDEX); |
104 | 0402f767 | pbrook | break;
|
105 | 0402f767 | pbrook | } |
106 | 0402f767 | pbrook | |
107 | 0402f767 | pbrook | register_m68k_insns(env); |
108 | 4f6cf9e8 | bellard | return 0; |
109 | aaed909a | bellard | } |
110 | aaed909a | bellard | |
111 | aaed909a | bellard | void cpu_reset(CPUM68KState *env)
|
112 | aaed909a | bellard | { |
113 | aaed909a | bellard | memset(env, 0, offsetof(CPUM68KState, breakpoints));
|
114 | aaed909a | bellard | #if !defined (CONFIG_USER_ONLY)
|
115 | aaed909a | bellard | env->sr = 0x2700;
|
116 | aaed909a | bellard | #endif
|
117 | aaed909a | bellard | m68k_switch_sp(env); |
118 | aaed909a | bellard | /* ??? FP regs should be initialized to NaN. */
|
119 | aaed909a | bellard | env->cc_op = CC_OP_FLAGS; |
120 | aaed909a | bellard | /* TODO: We should set PC from the interrupt vector. */
|
121 | aaed909a | bellard | env->pc = 0;
|
122 | aaed909a | bellard | tlb_flush(env, 1);
|
123 | aaed909a | bellard | } |
124 | aaed909a | bellard | |
125 | aaed909a | bellard | CPUM68KState *cpu_m68k_init(const char *cpu_model) |
126 | aaed909a | bellard | { |
127 | aaed909a | bellard | CPUM68KState *env; |
128 | e1f3808e | pbrook | static int inited; |
129 | aaed909a | bellard | |
130 | aaed909a | bellard | env = malloc(sizeof(CPUM68KState));
|
131 | aaed909a | bellard | if (!env)
|
132 | aaed909a | bellard | return NULL; |
133 | aaed909a | bellard | cpu_exec_init(env); |
134 | e1f3808e | pbrook | if (!inited) {
|
135 | e1f3808e | pbrook | inited = 1;
|
136 | e1f3808e | pbrook | m68k_tcg_init(); |
137 | e1f3808e | pbrook | } |
138 | aaed909a | bellard | |
139 | 01ba9816 | ths | env->cpu_model_str = cpu_model; |
140 | 01ba9816 | ths | |
141 | aaed909a | bellard | if (cpu_m68k_set_model(env, cpu_model) < 0) { |
142 | aaed909a | bellard | cpu_m68k_close(env); |
143 | aaed909a | bellard | return NULL; |
144 | aaed909a | bellard | } |
145 | 01ba9816 | ths | |
146 | aaed909a | bellard | cpu_reset(env); |
147 | aaed909a | bellard | return env;
|
148 | aaed909a | bellard | } |
149 | 0402f767 | pbrook | |
150 | aaed909a | bellard | void cpu_m68k_close(CPUM68KState *env)
|
151 | aaed909a | bellard | { |
152 | aaed909a | bellard | qemu_free(env); |
153 | 0402f767 | pbrook | } |
154 | 0402f767 | pbrook | |
155 | e6e5906b | pbrook | void cpu_m68k_flush_flags(CPUM68KState *env, int cc_op) |
156 | e6e5906b | pbrook | { |
157 | e6e5906b | pbrook | int flags;
|
158 | e6e5906b | pbrook | uint32_t src; |
159 | e6e5906b | pbrook | uint32_t dest; |
160 | e6e5906b | pbrook | uint32_t tmp; |
161 | e6e5906b | pbrook | |
162 | e6e5906b | pbrook | #define HIGHBIT 0x80000000u |
163 | e6e5906b | pbrook | |
164 | e6e5906b | pbrook | #define SET_NZ(x) do { \ |
165 | e6e5906b | pbrook | if ((x) == 0) \ |
166 | e6e5906b | pbrook | flags |= CCF_Z; \ |
167 | e6e5906b | pbrook | else if ((int32_t)(x) < 0) \ |
168 | e6e5906b | pbrook | flags |= CCF_N; \ |
169 | e6e5906b | pbrook | } while (0) |
170 | e6e5906b | pbrook | |
171 | e6e5906b | pbrook | #define SET_FLAGS_SUB(type, utype) do { \ |
172 | e6e5906b | pbrook | SET_NZ((type)dest); \ |
173 | e6e5906b | pbrook | tmp = dest + src; \ |
174 | e6e5906b | pbrook | if ((utype) tmp < (utype) src) \
|
175 | e6e5906b | pbrook | flags |= CCF_C; \ |
176 | e6e5906b | pbrook | if ((1u << (sizeof(type) * 8 - 1)) & (tmp ^ dest) & (tmp ^ src)) \ |
177 | e6e5906b | pbrook | flags |= CCF_V; \ |
178 | e6e5906b | pbrook | } while (0) |
179 | e6e5906b | pbrook | |
180 | e6e5906b | pbrook | flags = 0;
|
181 | e6e5906b | pbrook | src = env->cc_src; |
182 | e6e5906b | pbrook | dest = env->cc_dest; |
183 | e6e5906b | pbrook | switch (cc_op) {
|
184 | e6e5906b | pbrook | case CC_OP_FLAGS:
|
185 | e6e5906b | pbrook | flags = dest; |
186 | e6e5906b | pbrook | break;
|
187 | e6e5906b | pbrook | case CC_OP_LOGIC:
|
188 | e6e5906b | pbrook | SET_NZ(dest); |
189 | e6e5906b | pbrook | break;
|
190 | e6e5906b | pbrook | case CC_OP_ADD:
|
191 | e6e5906b | pbrook | SET_NZ(dest); |
192 | e6e5906b | pbrook | if (dest < src)
|
193 | e6e5906b | pbrook | flags |= CCF_C; |
194 | e6e5906b | pbrook | tmp = dest - src; |
195 | e6e5906b | pbrook | if (HIGHBIT & (src ^ dest) & ~(tmp ^ src))
|
196 | e6e5906b | pbrook | flags |= CCF_V; |
197 | e6e5906b | pbrook | break;
|
198 | e6e5906b | pbrook | case CC_OP_SUB:
|
199 | e6e5906b | pbrook | SET_FLAGS_SUB(int32_t, uint32_t); |
200 | e6e5906b | pbrook | break;
|
201 | e6e5906b | pbrook | case CC_OP_CMPB:
|
202 | e6e5906b | pbrook | SET_FLAGS_SUB(int8_t, uint8_t); |
203 | e6e5906b | pbrook | break;
|
204 | e6e5906b | pbrook | case CC_OP_CMPW:
|
205 | e6e5906b | pbrook | SET_FLAGS_SUB(int16_t, uint16_t); |
206 | e6e5906b | pbrook | break;
|
207 | e6e5906b | pbrook | case CC_OP_ADDX:
|
208 | e6e5906b | pbrook | SET_NZ(dest); |
209 | e6e5906b | pbrook | if (dest <= src)
|
210 | e6e5906b | pbrook | flags |= CCF_C; |
211 | e6e5906b | pbrook | tmp = dest - src - 1;
|
212 | e6e5906b | pbrook | if (HIGHBIT & (src ^ dest) & ~(tmp ^ src))
|
213 | e6e5906b | pbrook | flags |= CCF_V; |
214 | e6e5906b | pbrook | break;
|
215 | e6e5906b | pbrook | case CC_OP_SUBX:
|
216 | e6e5906b | pbrook | SET_NZ(dest); |
217 | e6e5906b | pbrook | tmp = dest + src + 1;
|
218 | e6e5906b | pbrook | if (tmp <= src)
|
219 | e6e5906b | pbrook | flags |= CCF_C; |
220 | e6e5906b | pbrook | if (HIGHBIT & (tmp ^ dest) & (tmp ^ src))
|
221 | e6e5906b | pbrook | flags |= CCF_V; |
222 | e6e5906b | pbrook | break;
|
223 | e1f3808e | pbrook | case CC_OP_SHIFT:
|
224 | e1f3808e | pbrook | SET_NZ(dest); |
225 | e1f3808e | pbrook | if (src)
|
226 | e6e5906b | pbrook | flags |= CCF_C; |
227 | e6e5906b | pbrook | break;
|
228 | e6e5906b | pbrook | default:
|
229 | e6e5906b | pbrook | cpu_abort(env, "Bad CC_OP %d", cc_op);
|
230 | e6e5906b | pbrook | } |
231 | e6e5906b | pbrook | env->cc_op = CC_OP_FLAGS; |
232 | e6e5906b | pbrook | env->cc_dest = flags; |
233 | e6e5906b | pbrook | } |
234 | e6e5906b | pbrook | |
235 | e1f3808e | pbrook | void HELPER(movec)(CPUM68KState *env, uint32_t reg, uint32_t val)
|
236 | 0633879f | pbrook | { |
237 | 0633879f | pbrook | switch (reg) {
|
238 | 0633879f | pbrook | case 0x02: /* CACR */ |
239 | 20dcee94 | pbrook | env->cacr = val; |
240 | 20dcee94 | pbrook | m68k_switch_sp(env); |
241 | 20dcee94 | pbrook | break;
|
242 | 20dcee94 | pbrook | case 0x04: case 0x05: case 0x06: case 0x07: /* ACR[0-3] */ |
243 | 20dcee94 | pbrook | /* TODO: Implement Access Control Registers. */
|
244 | 0633879f | pbrook | break;
|
245 | 0633879f | pbrook | case 0x801: /* VBR */ |
246 | 0633879f | pbrook | env->vbr = val; |
247 | 0633879f | pbrook | break;
|
248 | 0633879f | pbrook | /* TODO: Implement control registers. */
|
249 | 0633879f | pbrook | default:
|
250 | 0633879f | pbrook | cpu_abort(env, "Unimplemented control register write 0x%x = 0x%x\n",
|
251 | 0633879f | pbrook | reg, val); |
252 | 0633879f | pbrook | } |
253 | 0633879f | pbrook | } |
254 | 0633879f | pbrook | |
255 | e1f3808e | pbrook | void HELPER(set_macsr)(CPUM68KState *env, uint32_t val)
|
256 | acf930aa | pbrook | { |
257 | acf930aa | pbrook | uint32_t acc; |
258 | acf930aa | pbrook | int8_t exthigh; |
259 | acf930aa | pbrook | uint8_t extlow; |
260 | acf930aa | pbrook | uint64_t regval; |
261 | acf930aa | pbrook | int i;
|
262 | acf930aa | pbrook | if ((env->macsr ^ val) & (MACSR_FI | MACSR_SU)) {
|
263 | acf930aa | pbrook | for (i = 0; i < 4; i++) { |
264 | acf930aa | pbrook | regval = env->macc[i]; |
265 | acf930aa | pbrook | exthigh = regval >> 40;
|
266 | acf930aa | pbrook | if (env->macsr & MACSR_FI) {
|
267 | acf930aa | pbrook | acc = regval >> 8;
|
268 | acf930aa | pbrook | extlow = regval; |
269 | acf930aa | pbrook | } else {
|
270 | acf930aa | pbrook | acc = regval; |
271 | acf930aa | pbrook | extlow = regval >> 32;
|
272 | acf930aa | pbrook | } |
273 | acf930aa | pbrook | if (env->macsr & MACSR_FI) {
|
274 | acf930aa | pbrook | regval = (((uint64_t)acc) << 8) | extlow;
|
275 | acf930aa | pbrook | regval |= ((int64_t)exthigh) << 40;
|
276 | acf930aa | pbrook | } else if (env->macsr & MACSR_SU) { |
277 | acf930aa | pbrook | regval = acc | (((int64_t)extlow) << 32);
|
278 | acf930aa | pbrook | regval |= ((int64_t)exthigh) << 40;
|
279 | acf930aa | pbrook | } else {
|
280 | acf930aa | pbrook | regval = acc | (((uint64_t)extlow) << 32);
|
281 | acf930aa | pbrook | regval |= ((uint64_t)(uint8_t)exthigh) << 40;
|
282 | acf930aa | pbrook | } |
283 | acf930aa | pbrook | env->macc[i] = regval; |
284 | acf930aa | pbrook | } |
285 | acf930aa | pbrook | } |
286 | acf930aa | pbrook | env->macsr = val; |
287 | acf930aa | pbrook | } |
288 | acf930aa | pbrook | |
289 | 20dcee94 | pbrook | void m68k_switch_sp(CPUM68KState *env)
|
290 | 20dcee94 | pbrook | { |
291 | 20dcee94 | pbrook | int new_sp;
|
292 | 20dcee94 | pbrook | |
293 | 20dcee94 | pbrook | env->sp[env->current_sp] = env->aregs[7];
|
294 | 20dcee94 | pbrook | new_sp = (env->sr & SR_S && env->cacr & M68K_CACR_EUSP) |
295 | 20dcee94 | pbrook | ? M68K_SSP : M68K_USP; |
296 | 20dcee94 | pbrook | env->aregs[7] = env->sp[new_sp];
|
297 | 20dcee94 | pbrook | env->current_sp = new_sp; |
298 | 20dcee94 | pbrook | } |
299 | 20dcee94 | pbrook | |
300 | 0633879f | pbrook | /* MMU */
|
301 | 0633879f | pbrook | |
302 | 0633879f | pbrook | /* TODO: This will need fixing once the MMU is implemented. */
|
303 | 0633879f | pbrook | target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
304 | 0633879f | pbrook | { |
305 | 0633879f | pbrook | return addr;
|
306 | 0633879f | pbrook | } |
307 | 0633879f | pbrook | |
308 | 5fafdf24 | ths | #if defined(CONFIG_USER_ONLY)
|
309 | 0633879f | pbrook | |
310 | 0633879f | pbrook | int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw, |
311 | 6ebbf390 | j_mayer | int mmu_idx, int is_softmmu) |
312 | 0633879f | pbrook | { |
313 | 0633879f | pbrook | env->exception_index = EXCP_ACCESS; |
314 | 0633879f | pbrook | env->mmu.ar = address; |
315 | 0633879f | pbrook | return 1; |
316 | 0633879f | pbrook | } |
317 | 0633879f | pbrook | |
318 | 0633879f | pbrook | #else
|
319 | 0633879f | pbrook | |
320 | 0633879f | pbrook | int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw, |
321 | 6ebbf390 | j_mayer | int mmu_idx, int is_softmmu) |
322 | 0633879f | pbrook | { |
323 | 0633879f | pbrook | int prot;
|
324 | 0633879f | pbrook | |
325 | 0633879f | pbrook | address &= TARGET_PAGE_MASK; |
326 | 0633879f | pbrook | prot = PAGE_READ | PAGE_WRITE; |
327 | 6ebbf390 | j_mayer | return tlb_set_page(env, address, address, prot, mmu_idx, is_softmmu);
|
328 | 0633879f | pbrook | } |
329 | 0633879f | pbrook | |
330 | 0633879f | pbrook | /* Notify CPU of a pending interrupt. Prioritization and vectoring should
|
331 | 0633879f | pbrook | be handled by the interrupt controller. Real hardware only requests
|
332 | 0633879f | pbrook | the vector when the interrupt is acknowledged by the CPU. For
|
333 | 0633879f | pbrook | simplicitly we calculate it when the interrupt is signalled. */
|
334 | 0633879f | pbrook | void m68k_set_irq_level(CPUM68KState *env, int level, uint8_t vector) |
335 | 0633879f | pbrook | { |
336 | 0633879f | pbrook | env->pending_level = level; |
337 | 0633879f | pbrook | env->pending_vector = vector; |
338 | 0633879f | pbrook | if (level)
|
339 | 0633879f | pbrook | cpu_interrupt(env, CPU_INTERRUPT_HARD); |
340 | 0633879f | pbrook | else
|
341 | 0633879f | pbrook | cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); |
342 | 0633879f | pbrook | } |
343 | 0633879f | pbrook | |
344 | 0633879f | pbrook | #endif
|
345 | e1f3808e | pbrook | |
346 | e1f3808e | pbrook | uint32_t HELPER(bitrev)(uint32_t x) |
347 | e1f3808e | pbrook | { |
348 | e1f3808e | pbrook | x = ((x >> 1) & 0x55555555u) | ((x << 1) & 0xaaaaaaaau); |
349 | e1f3808e | pbrook | x = ((x >> 2) & 0x33333333u) | ((x << 2) & 0xccccccccu); |
350 | e1f3808e | pbrook | x = ((x >> 4) & 0x0f0f0f0fu) | ((x << 4) & 0xf0f0f0f0u); |
351 | e1f3808e | pbrook | return bswap32(x);
|
352 | e1f3808e | pbrook | } |
353 | e1f3808e | pbrook | |
354 | e1f3808e | pbrook | uint32_t HELPER(ff1)(uint32_t x) |
355 | e1f3808e | pbrook | { |
356 | e1f3808e | pbrook | int n;
|
357 | e1f3808e | pbrook | for (n = 32; x; n--) |
358 | e1f3808e | pbrook | x >>= 1;
|
359 | e1f3808e | pbrook | return n;
|
360 | e1f3808e | pbrook | } |
361 | e1f3808e | pbrook | |
362 | e1f3808e | pbrook | uint32_t HELPER(sats)(uint32_t val, uint32_t ccr) |
363 | e1f3808e | pbrook | { |
364 | e1f3808e | pbrook | /* The result has the opposite sign to the original value. */
|
365 | e1f3808e | pbrook | if (ccr & CCF_V)
|
366 | e1f3808e | pbrook | val = (((int32_t)val) >> 31) ^ SIGNBIT;
|
367 | e1f3808e | pbrook | return val;
|
368 | e1f3808e | pbrook | } |
369 | e1f3808e | pbrook | |
370 | e1f3808e | pbrook | uint32_t HELPER(subx_cc)(CPUState *env, uint32_t op1, uint32_t op2) |
371 | e1f3808e | pbrook | { |
372 | e1f3808e | pbrook | uint32_t res; |
373 | e1f3808e | pbrook | uint32_t old_flags; |
374 | e1f3808e | pbrook | |
375 | e1f3808e | pbrook | old_flags = env->cc_dest; |
376 | e1f3808e | pbrook | if (env->cc_x) {
|
377 | e1f3808e | pbrook | env->cc_x = (op1 <= op2); |
378 | e1f3808e | pbrook | env->cc_op = CC_OP_SUBX; |
379 | e1f3808e | pbrook | res = op1 - (op2 + 1);
|
380 | e1f3808e | pbrook | } else {
|
381 | e1f3808e | pbrook | env->cc_x = (op1 < op2); |
382 | e1f3808e | pbrook | env->cc_op = CC_OP_SUB; |
383 | e1f3808e | pbrook | res = op1 - op2; |
384 | e1f3808e | pbrook | } |
385 | e1f3808e | pbrook | env->cc_dest = res; |
386 | e1f3808e | pbrook | env->cc_src = op2; |
387 | e1f3808e | pbrook | cpu_m68k_flush_flags(env, env->cc_op); |
388 | e1f3808e | pbrook | /* !Z is sticky. */
|
389 | e1f3808e | pbrook | env->cc_dest &= (old_flags | ~CCF_Z); |
390 | e1f3808e | pbrook | return res;
|
391 | e1f3808e | pbrook | } |
392 | e1f3808e | pbrook | |
393 | e1f3808e | pbrook | uint32_t HELPER(addx_cc)(CPUState *env, uint32_t op1, uint32_t op2) |
394 | e1f3808e | pbrook | { |
395 | e1f3808e | pbrook | uint32_t res; |
396 | e1f3808e | pbrook | uint32_t old_flags; |
397 | e1f3808e | pbrook | |
398 | e1f3808e | pbrook | old_flags = env->cc_dest; |
399 | e1f3808e | pbrook | if (env->cc_x) {
|
400 | e1f3808e | pbrook | res = op1 + op2 + 1;
|
401 | e1f3808e | pbrook | env->cc_x = (res <= op2); |
402 | e1f3808e | pbrook | env->cc_op = CC_OP_ADDX; |
403 | e1f3808e | pbrook | } else {
|
404 | e1f3808e | pbrook | res = op1 + op2; |
405 | e1f3808e | pbrook | env->cc_x = (res < op2); |
406 | e1f3808e | pbrook | env->cc_op = CC_OP_ADD; |
407 | e1f3808e | pbrook | } |
408 | e1f3808e | pbrook | env->cc_dest = res; |
409 | e1f3808e | pbrook | env->cc_src = op2; |
410 | e1f3808e | pbrook | cpu_m68k_flush_flags(env, env->cc_op); |
411 | e1f3808e | pbrook | /* !Z is sticky. */
|
412 | e1f3808e | pbrook | env->cc_dest &= (old_flags | ~CCF_Z); |
413 | e1f3808e | pbrook | return res;
|
414 | e1f3808e | pbrook | } |
415 | e1f3808e | pbrook | |
416 | e1f3808e | pbrook | uint32_t HELPER(xflag_lt)(uint32_t a, uint32_t b) |
417 | e1f3808e | pbrook | { |
418 | e1f3808e | pbrook | return a < b;
|
419 | e1f3808e | pbrook | } |
420 | e1f3808e | pbrook | |
421 | e1f3808e | pbrook | uint32_t HELPER(btest)(uint32_t x) |
422 | e1f3808e | pbrook | { |
423 | e1f3808e | pbrook | return x != 0; |
424 | e1f3808e | pbrook | } |
425 | e1f3808e | pbrook | |
426 | e1f3808e | pbrook | void HELPER(set_sr)(CPUState *env, uint32_t val)
|
427 | e1f3808e | pbrook | { |
428 | e1f3808e | pbrook | env->sr = val & 0xffff;
|
429 | e1f3808e | pbrook | m68k_switch_sp(env); |
430 | e1f3808e | pbrook | } |
431 | e1f3808e | pbrook | |
432 | e1f3808e | pbrook | uint32_t HELPER(shl_cc)(CPUState *env, uint32_t val, uint32_t shift) |
433 | e1f3808e | pbrook | { |
434 | e1f3808e | pbrook | uint32_t result; |
435 | e1f3808e | pbrook | uint32_t cf; |
436 | e1f3808e | pbrook | |
437 | e1f3808e | pbrook | shift &= 63;
|
438 | e1f3808e | pbrook | if (shift == 0) { |
439 | e1f3808e | pbrook | result = val; |
440 | e1f3808e | pbrook | cf = env->cc_src & CCF_C; |
441 | e1f3808e | pbrook | } else if (shift < 32) { |
442 | e1f3808e | pbrook | result = val << shift; |
443 | e1f3808e | pbrook | cf = (val >> (32 - shift)) & 1; |
444 | e1f3808e | pbrook | } else if (shift == 32) { |
445 | e1f3808e | pbrook | result = 0;
|
446 | e1f3808e | pbrook | cf = val & 1;
|
447 | e1f3808e | pbrook | } else /* shift > 32 */ { |
448 | e1f3808e | pbrook | result = 0;
|
449 | e1f3808e | pbrook | cf = 0;
|
450 | e1f3808e | pbrook | } |
451 | e1f3808e | pbrook | env->cc_src = cf; |
452 | e1f3808e | pbrook | env->cc_x = (cf != 0);
|
453 | e1f3808e | pbrook | env->cc_dest = result; |
454 | e1f3808e | pbrook | return result;
|
455 | e1f3808e | pbrook | } |
456 | e1f3808e | pbrook | |
457 | e1f3808e | pbrook | uint32_t HELPER(shr_cc)(CPUState *env, uint32_t val, uint32_t shift) |
458 | e1f3808e | pbrook | { |
459 | e1f3808e | pbrook | uint32_t result; |
460 | e1f3808e | pbrook | uint32_t cf; |
461 | e1f3808e | pbrook | |
462 | e1f3808e | pbrook | shift &= 63;
|
463 | e1f3808e | pbrook | if (shift == 0) { |
464 | e1f3808e | pbrook | result = val; |
465 | e1f3808e | pbrook | cf = env->cc_src & CCF_C; |
466 | e1f3808e | pbrook | } else if (shift < 32) { |
467 | e1f3808e | pbrook | result = val >> shift; |
468 | e1f3808e | pbrook | cf = (val >> (shift - 1)) & 1; |
469 | e1f3808e | pbrook | } else if (shift == 32) { |
470 | e1f3808e | pbrook | result = 0;
|
471 | e1f3808e | pbrook | cf = val >> 31;
|
472 | e1f3808e | pbrook | } else /* shift > 32 */ { |
473 | e1f3808e | pbrook | result = 0;
|
474 | e1f3808e | pbrook | cf = 0;
|
475 | e1f3808e | pbrook | } |
476 | e1f3808e | pbrook | env->cc_src = cf; |
477 | e1f3808e | pbrook | env->cc_x = (cf != 0);
|
478 | e1f3808e | pbrook | env->cc_dest = result; |
479 | e1f3808e | pbrook | return result;
|
480 | e1f3808e | pbrook | } |
481 | e1f3808e | pbrook | |
482 | e1f3808e | pbrook | uint32_t HELPER(sar_cc)(CPUState *env, uint32_t val, uint32_t shift) |
483 | e1f3808e | pbrook | { |
484 | e1f3808e | pbrook | uint32_t result; |
485 | e1f3808e | pbrook | uint32_t cf; |
486 | e1f3808e | pbrook | |
487 | e1f3808e | pbrook | shift &= 63;
|
488 | e1f3808e | pbrook | if (shift == 0) { |
489 | e1f3808e | pbrook | result = val; |
490 | e1f3808e | pbrook | cf = (env->cc_src & CCF_C) != 0;
|
491 | e1f3808e | pbrook | } else if (shift < 32) { |
492 | e1f3808e | pbrook | result = (int32_t)val >> shift; |
493 | e1f3808e | pbrook | cf = (val >> (shift - 1)) & 1; |
494 | e1f3808e | pbrook | } else /* shift >= 32 */ { |
495 | e1f3808e | pbrook | result = (int32_t)val >> 31;
|
496 | e1f3808e | pbrook | cf = val >> 31;
|
497 | e1f3808e | pbrook | } |
498 | e1f3808e | pbrook | env->cc_src = cf; |
499 | e1f3808e | pbrook | env->cc_x = cf; |
500 | e1f3808e | pbrook | env->cc_dest = result; |
501 | e1f3808e | pbrook | return result;
|
502 | e1f3808e | pbrook | } |
503 | e1f3808e | pbrook | |
504 | e1f3808e | pbrook | /* FPU helpers. */
|
505 | e1f3808e | pbrook | uint32_t HELPER(f64_to_i32)(CPUState *env, float64 val) |
506 | e1f3808e | pbrook | { |
507 | e1f3808e | pbrook | return float64_to_int32(val, &env->fp_status);
|
508 | e1f3808e | pbrook | } |
509 | e1f3808e | pbrook | |
510 | e1f3808e | pbrook | float32 HELPER(f64_to_f32)(CPUState *env, float64 val) |
511 | e1f3808e | pbrook | { |
512 | e1f3808e | pbrook | return float64_to_float32(val, &env->fp_status);
|
513 | e1f3808e | pbrook | } |
514 | e1f3808e | pbrook | |
515 | e1f3808e | pbrook | float64 HELPER(i32_to_f64)(CPUState *env, uint32_t val) |
516 | e1f3808e | pbrook | { |
517 | e1f3808e | pbrook | return int32_to_float64(val, &env->fp_status);
|
518 | e1f3808e | pbrook | } |
519 | e1f3808e | pbrook | |
520 | e1f3808e | pbrook | float64 HELPER(f32_to_f64)(CPUState *env, float32 val) |
521 | e1f3808e | pbrook | { |
522 | e1f3808e | pbrook | return float32_to_float64(val, &env->fp_status);
|
523 | e1f3808e | pbrook | } |
524 | e1f3808e | pbrook | |
525 | e1f3808e | pbrook | float64 HELPER(iround_f64)(CPUState *env, float64 val) |
526 | e1f3808e | pbrook | { |
527 | e1f3808e | pbrook | return float64_round_to_int(val, &env->fp_status);
|
528 | e1f3808e | pbrook | } |
529 | e1f3808e | pbrook | |
530 | e1f3808e | pbrook | float64 HELPER(itrunc_f64)(CPUState *env, float64 val) |
531 | e1f3808e | pbrook | { |
532 | e1f3808e | pbrook | return float64_trunc_to_int(val, &env->fp_status);
|
533 | e1f3808e | pbrook | } |
534 | e1f3808e | pbrook | |
535 | e1f3808e | pbrook | float64 HELPER(sqrt_f64)(CPUState *env, float64 val) |
536 | e1f3808e | pbrook | { |
537 | e1f3808e | pbrook | return float64_sqrt(val, &env->fp_status);
|
538 | e1f3808e | pbrook | } |
539 | e1f3808e | pbrook | |
540 | e1f3808e | pbrook | float64 HELPER(abs_f64)(float64 val) |
541 | e1f3808e | pbrook | { |
542 | e1f3808e | pbrook | return float64_abs(val);
|
543 | e1f3808e | pbrook | } |
544 | e1f3808e | pbrook | |
545 | e1f3808e | pbrook | float64 HELPER(chs_f64)(float64 val) |
546 | e1f3808e | pbrook | { |
547 | e1f3808e | pbrook | return float64_chs(val);
|
548 | e1f3808e | pbrook | } |
549 | e1f3808e | pbrook | |
550 | e1f3808e | pbrook | float64 HELPER(add_f64)(CPUState *env, float64 a, float64 b) |
551 | e1f3808e | pbrook | { |
552 | e1f3808e | pbrook | return float64_add(a, b, &env->fp_status);
|
553 | e1f3808e | pbrook | } |
554 | e1f3808e | pbrook | |
555 | e1f3808e | pbrook | float64 HELPER(sub_f64)(CPUState *env, float64 a, float64 b) |
556 | e1f3808e | pbrook | { |
557 | e1f3808e | pbrook | return float64_sub(a, b, &env->fp_status);
|
558 | e1f3808e | pbrook | } |
559 | e1f3808e | pbrook | |
560 | e1f3808e | pbrook | float64 HELPER(mul_f64)(CPUState *env, float64 a, float64 b) |
561 | e1f3808e | pbrook | { |
562 | e1f3808e | pbrook | return float64_mul(a, b, &env->fp_status);
|
563 | e1f3808e | pbrook | } |
564 | e1f3808e | pbrook | |
565 | e1f3808e | pbrook | float64 HELPER(div_f64)(CPUState *env, float64 a, float64 b) |
566 | e1f3808e | pbrook | { |
567 | e1f3808e | pbrook | return float64_div(a, b, &env->fp_status);
|
568 | e1f3808e | pbrook | } |
569 | e1f3808e | pbrook | |
570 | e1f3808e | pbrook | float64 HELPER(sub_cmp_f64)(CPUState *env, float64 a, float64 b) |
571 | e1f3808e | pbrook | { |
572 | e1f3808e | pbrook | /* ??? This may incorrectly raise exceptions. */
|
573 | e1f3808e | pbrook | /* ??? Should flush denormals to zero. */
|
574 | e1f3808e | pbrook | float64 res; |
575 | e1f3808e | pbrook | res = float64_sub(a, b, &env->fp_status); |
576 | e1f3808e | pbrook | if (float64_is_nan(res)) {
|
577 | e1f3808e | pbrook | /* +/-inf compares equal against itself, but sub returns nan. */
|
578 | e1f3808e | pbrook | if (!float64_is_nan(a)
|
579 | e1f3808e | pbrook | && !float64_is_nan(b)) { |
580 | e1f3808e | pbrook | res = float64_zero; |
581 | e1f3808e | pbrook | if (float64_lt_quiet(a, res, &env->fp_status))
|
582 | e1f3808e | pbrook | res = float64_chs(res); |
583 | e1f3808e | pbrook | } |
584 | e1f3808e | pbrook | } |
585 | e1f3808e | pbrook | return res;
|
586 | e1f3808e | pbrook | } |
587 | e1f3808e | pbrook | |
588 | e1f3808e | pbrook | uint32_t HELPER(compare_f64)(CPUState *env, float64 val) |
589 | e1f3808e | pbrook | { |
590 | e1f3808e | pbrook | return float64_compare_quiet(val, float64_zero, &env->fp_status);
|
591 | e1f3808e | pbrook | } |
592 | e1f3808e | pbrook | |
593 | e1f3808e | pbrook | /* MAC unit. */
|
594 | e1f3808e | pbrook | /* FIXME: The MAC unit implementation is a bit of a mess. Some helpers
|
595 | e1f3808e | pbrook | take values, others take register numbers and manipulate the contents
|
596 | e1f3808e | pbrook | in-place. */
|
597 | e1f3808e | pbrook | void HELPER(mac_move)(CPUState *env, uint32_t dest, uint32_t src)
|
598 | e1f3808e | pbrook | { |
599 | e1f3808e | pbrook | uint32_t mask; |
600 | e1f3808e | pbrook | env->macc[dest] = env->macc[src]; |
601 | e1f3808e | pbrook | mask = MACSR_PAV0 << dest; |
602 | e1f3808e | pbrook | if (env->macsr & (MACSR_PAV0 << src))
|
603 | e1f3808e | pbrook | env->macsr |= mask; |
604 | e1f3808e | pbrook | else
|
605 | e1f3808e | pbrook | env->macsr &= ~mask; |
606 | e1f3808e | pbrook | } |
607 | e1f3808e | pbrook | |
608 | e1f3808e | pbrook | uint64_t HELPER(macmuls)(CPUState *env, uint32_t op1, uint32_t op2) |
609 | e1f3808e | pbrook | { |
610 | e1f3808e | pbrook | int64_t product; |
611 | e1f3808e | pbrook | int64_t res; |
612 | e1f3808e | pbrook | |
613 | e1f3808e | pbrook | product = (uint64_t)op1 * op2; |
614 | e1f3808e | pbrook | res = (product << 24) >> 24; |
615 | e1f3808e | pbrook | if (res != product) {
|
616 | e1f3808e | pbrook | env->macsr |= MACSR_V; |
617 | e1f3808e | pbrook | if (env->macsr & MACSR_OMC) {
|
618 | e1f3808e | pbrook | /* Make sure the accumulate operation overflows. */
|
619 | e1f3808e | pbrook | if (product < 0) |
620 | e1f3808e | pbrook | res = ~(1ll << 50); |
621 | e1f3808e | pbrook | else
|
622 | e1f3808e | pbrook | res = 1ll << 50; |
623 | e1f3808e | pbrook | } |
624 | e1f3808e | pbrook | } |
625 | e1f3808e | pbrook | return res;
|
626 | e1f3808e | pbrook | } |
627 | e1f3808e | pbrook | |
628 | e1f3808e | pbrook | uint64_t HELPER(macmulu)(CPUState *env, uint32_t op1, uint32_t op2) |
629 | e1f3808e | pbrook | { |
630 | e1f3808e | pbrook | uint64_t product; |
631 | e1f3808e | pbrook | |
632 | e1f3808e | pbrook | product = (uint64_t)op1 * op2; |
633 | e1f3808e | pbrook | if (product & (0xffffffull << 40)) { |
634 | e1f3808e | pbrook | env->macsr |= MACSR_V; |
635 | e1f3808e | pbrook | if (env->macsr & MACSR_OMC) {
|
636 | e1f3808e | pbrook | /* Make sure the accumulate operation overflows. */
|
637 | e1f3808e | pbrook | product = 1ll << 50; |
638 | e1f3808e | pbrook | } else {
|
639 | e1f3808e | pbrook | product &= ((1ull << 40) - 1); |
640 | e1f3808e | pbrook | } |
641 | e1f3808e | pbrook | } |
642 | e1f3808e | pbrook | return product;
|
643 | e1f3808e | pbrook | } |
644 | e1f3808e | pbrook | |
645 | e1f3808e | pbrook | uint64_t HELPER(macmulf)(CPUState *env, uint32_t op1, uint32_t op2) |
646 | e1f3808e | pbrook | { |
647 | e1f3808e | pbrook | uint64_t product; |
648 | e1f3808e | pbrook | uint32_t remainder; |
649 | e1f3808e | pbrook | |
650 | e1f3808e | pbrook | product = (uint64_t)op1 * op2; |
651 | e1f3808e | pbrook | if (env->macsr & MACSR_RT) {
|
652 | e1f3808e | pbrook | remainder = product & 0xffffff;
|
653 | e1f3808e | pbrook | product >>= 24;
|
654 | e1f3808e | pbrook | if (remainder > 0x800000) |
655 | e1f3808e | pbrook | product++; |
656 | e1f3808e | pbrook | else if (remainder == 0x800000) |
657 | e1f3808e | pbrook | product += (product & 1);
|
658 | e1f3808e | pbrook | } else {
|
659 | e1f3808e | pbrook | product >>= 24;
|
660 | e1f3808e | pbrook | } |
661 | e1f3808e | pbrook | return product;
|
662 | e1f3808e | pbrook | } |
663 | e1f3808e | pbrook | |
664 | e1f3808e | pbrook | void HELPER(macsats)(CPUState *env, uint32_t acc)
|
665 | e1f3808e | pbrook | { |
666 | e1f3808e | pbrook | int64_t tmp; |
667 | e1f3808e | pbrook | int64_t result; |
668 | e1f3808e | pbrook | tmp = env->macc[acc]; |
669 | e1f3808e | pbrook | result = ((tmp << 16) >> 16); |
670 | e1f3808e | pbrook | if (result != tmp) {
|
671 | e1f3808e | pbrook | env->macsr |= MACSR_V; |
672 | e1f3808e | pbrook | } |
673 | e1f3808e | pbrook | if (env->macsr & MACSR_V) {
|
674 | e1f3808e | pbrook | env->macsr |= MACSR_PAV0 << acc; |
675 | e1f3808e | pbrook | if (env->macsr & MACSR_OMC) {
|
676 | e1f3808e | pbrook | /* The result is saturated to 32 bits, despite overflow occuring
|
677 | e1f3808e | pbrook | at 48 bits. Seems weird, but that's what the hardware docs
|
678 | e1f3808e | pbrook | say. */
|
679 | e1f3808e | pbrook | result = (result >> 63) ^ 0x7fffffff; |
680 | e1f3808e | pbrook | } |
681 | e1f3808e | pbrook | } |
682 | e1f3808e | pbrook | env->macc[acc] = result; |
683 | e1f3808e | pbrook | } |
684 | e1f3808e | pbrook | |
685 | e1f3808e | pbrook | void HELPER(macsatu)(CPUState *env, uint32_t acc)
|
686 | e1f3808e | pbrook | { |
687 | e1f3808e | pbrook | uint64_t val; |
688 | e1f3808e | pbrook | |
689 | e1f3808e | pbrook | val = env->macc[acc]; |
690 | e1f3808e | pbrook | if (val & (0xffffull << 48)) { |
691 | e1f3808e | pbrook | env->macsr |= MACSR_V; |
692 | e1f3808e | pbrook | } |
693 | e1f3808e | pbrook | if (env->macsr & MACSR_V) {
|
694 | e1f3808e | pbrook | env->macsr |= MACSR_PAV0 << acc; |
695 | e1f3808e | pbrook | if (env->macsr & MACSR_OMC) {
|
696 | e1f3808e | pbrook | if (val > (1ull << 53)) |
697 | e1f3808e | pbrook | val = 0;
|
698 | e1f3808e | pbrook | else
|
699 | e1f3808e | pbrook | val = (1ull << 48) - 1; |
700 | e1f3808e | pbrook | } else {
|
701 | e1f3808e | pbrook | val &= ((1ull << 48) - 1); |
702 | e1f3808e | pbrook | } |
703 | e1f3808e | pbrook | } |
704 | e1f3808e | pbrook | env->macc[acc] = val; |
705 | e1f3808e | pbrook | } |
706 | e1f3808e | pbrook | |
707 | e1f3808e | pbrook | void HELPER(macsatf)(CPUState *env, uint32_t acc)
|
708 | e1f3808e | pbrook | { |
709 | e1f3808e | pbrook | int64_t sum; |
710 | e1f3808e | pbrook | int64_t result; |
711 | e1f3808e | pbrook | |
712 | e1f3808e | pbrook | sum = env->macc[acc]; |
713 | e1f3808e | pbrook | result = (sum << 16) >> 16; |
714 | e1f3808e | pbrook | if (result != sum) {
|
715 | e1f3808e | pbrook | env->macsr |= MACSR_V; |
716 | e1f3808e | pbrook | } |
717 | e1f3808e | pbrook | if (env->macsr & MACSR_V) {
|
718 | e1f3808e | pbrook | env->macsr |= MACSR_PAV0 << acc; |
719 | e1f3808e | pbrook | if (env->macsr & MACSR_OMC) {
|
720 | e1f3808e | pbrook | result = (result >> 63) ^ 0x7fffffffffffll; |
721 | e1f3808e | pbrook | } |
722 | e1f3808e | pbrook | } |
723 | e1f3808e | pbrook | env->macc[acc] = result; |
724 | e1f3808e | pbrook | } |
725 | e1f3808e | pbrook | |
726 | e1f3808e | pbrook | void HELPER(mac_set_flags)(CPUState *env, uint32_t acc)
|
727 | e1f3808e | pbrook | { |
728 | e1f3808e | pbrook | uint64_t val; |
729 | e1f3808e | pbrook | val = env->macc[acc]; |
730 | e1f3808e | pbrook | if (val == 0) |
731 | e1f3808e | pbrook | env->macsr |= MACSR_Z; |
732 | e1f3808e | pbrook | else if (val & (1ull << 47)); |
733 | e1f3808e | pbrook | env->macsr |= MACSR_N; |
734 | e1f3808e | pbrook | if (env->macsr & (MACSR_PAV0 << acc)) {
|
735 | e1f3808e | pbrook | env->macsr |= MACSR_V; |
736 | e1f3808e | pbrook | } |
737 | e1f3808e | pbrook | if (env->macsr & MACSR_FI) {
|
738 | e1f3808e | pbrook | val = ((int64_t)val) >> 40;
|
739 | e1f3808e | pbrook | if (val != 0 && val != -1) |
740 | e1f3808e | pbrook | env->macsr |= MACSR_EV; |
741 | e1f3808e | pbrook | } else if (env->macsr & MACSR_SU) { |
742 | e1f3808e | pbrook | val = ((int64_t)val) >> 32;
|
743 | e1f3808e | pbrook | if (val != 0 && val != -1) |
744 | e1f3808e | pbrook | env->macsr |= MACSR_EV; |
745 | e1f3808e | pbrook | } else {
|
746 | e1f3808e | pbrook | if ((val >> 32) != 0) |
747 | e1f3808e | pbrook | env->macsr |= MACSR_EV; |
748 | e1f3808e | pbrook | } |
749 | e1f3808e | pbrook | } |
750 | e1f3808e | pbrook | |
751 | e1f3808e | pbrook | void HELPER(flush_flags)(CPUState *env, uint32_t cc_op)
|
752 | e1f3808e | pbrook | { |
753 | e1f3808e | pbrook | cpu_m68k_flush_flags(env, cc_op); |
754 | e1f3808e | pbrook | } |
755 | e1f3808e | pbrook | |
756 | e1f3808e | pbrook | uint32_t HELPER(get_macf)(CPUState *env, uint64_t val) |
757 | e1f3808e | pbrook | { |
758 | e1f3808e | pbrook | int rem;
|
759 | e1f3808e | pbrook | uint32_t result; |
760 | e1f3808e | pbrook | |
761 | e1f3808e | pbrook | if (env->macsr & MACSR_SU) {
|
762 | e1f3808e | pbrook | /* 16-bit rounding. */
|
763 | e1f3808e | pbrook | rem = val & 0xffffff;
|
764 | e1f3808e | pbrook | val = (val >> 24) & 0xffffu; |
765 | e1f3808e | pbrook | if (rem > 0x800000) |
766 | e1f3808e | pbrook | val++; |
767 | e1f3808e | pbrook | else if (rem == 0x800000) |
768 | e1f3808e | pbrook | val += (val & 1);
|
769 | e1f3808e | pbrook | } else if (env->macsr & MACSR_RT) { |
770 | e1f3808e | pbrook | /* 32-bit rounding. */
|
771 | e1f3808e | pbrook | rem = val & 0xff;
|
772 | e1f3808e | pbrook | val >>= 8;
|
773 | e1f3808e | pbrook | if (rem > 0x80) |
774 | e1f3808e | pbrook | val++; |
775 | e1f3808e | pbrook | else if (rem == 0x80) |
776 | e1f3808e | pbrook | val += (val & 1);
|
777 | e1f3808e | pbrook | } else {
|
778 | e1f3808e | pbrook | /* No rounding. */
|
779 | e1f3808e | pbrook | val >>= 8;
|
780 | e1f3808e | pbrook | } |
781 | e1f3808e | pbrook | if (env->macsr & MACSR_OMC) {
|
782 | e1f3808e | pbrook | /* Saturate. */
|
783 | e1f3808e | pbrook | if (env->macsr & MACSR_SU) {
|
784 | e1f3808e | pbrook | if (val != (uint16_t) val) {
|
785 | e1f3808e | pbrook | result = ((val >> 63) ^ 0x7fff) & 0xffff; |
786 | e1f3808e | pbrook | } else {
|
787 | e1f3808e | pbrook | result = val & 0xffff;
|
788 | e1f3808e | pbrook | } |
789 | e1f3808e | pbrook | } else {
|
790 | e1f3808e | pbrook | if (val != (uint32_t)val) {
|
791 | e1f3808e | pbrook | result = ((uint32_t)(val >> 63) & 0x7fffffff); |
792 | e1f3808e | pbrook | } else {
|
793 | e1f3808e | pbrook | result = (uint32_t)val; |
794 | e1f3808e | pbrook | } |
795 | e1f3808e | pbrook | } |
796 | e1f3808e | pbrook | } else {
|
797 | e1f3808e | pbrook | /* No saturation. */
|
798 | e1f3808e | pbrook | if (env->macsr & MACSR_SU) {
|
799 | e1f3808e | pbrook | result = val & 0xffff;
|
800 | e1f3808e | pbrook | } else {
|
801 | e1f3808e | pbrook | result = (uint32_t)val; |
802 | e1f3808e | pbrook | } |
803 | e1f3808e | pbrook | } |
804 | e1f3808e | pbrook | return result;
|
805 | e1f3808e | pbrook | } |
806 | e1f3808e | pbrook | |
807 | e1f3808e | pbrook | uint32_t HELPER(get_macs)(uint64_t val) |
808 | e1f3808e | pbrook | { |
809 | e1f3808e | pbrook | if (val == (int32_t)val) {
|
810 | e1f3808e | pbrook | return (int32_t)val;
|
811 | e1f3808e | pbrook | } else {
|
812 | e1f3808e | pbrook | return (val >> 61) ^ ~SIGNBIT; |
813 | e1f3808e | pbrook | } |
814 | e1f3808e | pbrook | } |
815 | e1f3808e | pbrook | |
816 | e1f3808e | pbrook | uint32_t HELPER(get_macu)(uint64_t val) |
817 | e1f3808e | pbrook | { |
818 | e1f3808e | pbrook | if ((val >> 32) == 0) { |
819 | e1f3808e | pbrook | return (uint32_t)val;
|
820 | e1f3808e | pbrook | } else {
|
821 | e1f3808e | pbrook | return 0xffffffffu; |
822 | e1f3808e | pbrook | } |
823 | e1f3808e | pbrook | } |
824 | e1f3808e | pbrook | |
825 | e1f3808e | pbrook | uint32_t HELPER(get_mac_extf)(CPUState *env, uint32_t acc) |
826 | e1f3808e | pbrook | { |
827 | e1f3808e | pbrook | uint32_t val; |
828 | e1f3808e | pbrook | val = env->macc[acc] & 0x00ff;
|
829 | e1f3808e | pbrook | val = (env->macc[acc] >> 32) & 0xff00; |
830 | e1f3808e | pbrook | val |= (env->macc[acc + 1] << 16) & 0x00ff0000; |
831 | e1f3808e | pbrook | val |= (env->macc[acc + 1] >> 16) & 0xff000000; |
832 | e1f3808e | pbrook | return val;
|
833 | e1f3808e | pbrook | } |
834 | e1f3808e | pbrook | |
835 | e1f3808e | pbrook | uint32_t HELPER(get_mac_exti)(CPUState *env, uint32_t acc) |
836 | e1f3808e | pbrook | { |
837 | e1f3808e | pbrook | uint32_t val; |
838 | e1f3808e | pbrook | val = (env->macc[acc] >> 32) & 0xffff; |
839 | e1f3808e | pbrook | val |= (env->macc[acc + 1] >> 16) & 0xffff0000; |
840 | e1f3808e | pbrook | return val;
|
841 | e1f3808e | pbrook | } |
842 | e1f3808e | pbrook | |
843 | e1f3808e | pbrook | void HELPER(set_mac_extf)(CPUState *env, uint32_t val, uint32_t acc)
|
844 | e1f3808e | pbrook | { |
845 | e1f3808e | pbrook | int64_t res; |
846 | e1f3808e | pbrook | int32_t tmp; |
847 | e1f3808e | pbrook | res = env->macc[acc] & 0xffffffff00ull;
|
848 | e1f3808e | pbrook | tmp = (int16_t)(val & 0xff00);
|
849 | e1f3808e | pbrook | res |= ((int64_t)tmp) << 32;
|
850 | e1f3808e | pbrook | res |= val & 0xff;
|
851 | e1f3808e | pbrook | env->macc[acc] = res; |
852 | e1f3808e | pbrook | res = env->macc[acc + 1] & 0xffffffff00ull; |
853 | e1f3808e | pbrook | tmp = (val & 0xff000000);
|
854 | e1f3808e | pbrook | res |= ((int64_t)tmp) << 16;
|
855 | e1f3808e | pbrook | res |= (val >> 16) & 0xff; |
856 | e1f3808e | pbrook | env->macc[acc + 1] = res;
|
857 | e1f3808e | pbrook | } |
858 | e1f3808e | pbrook | |
859 | e1f3808e | pbrook | void HELPER(set_mac_exts)(CPUState *env, uint32_t val, uint32_t acc)
|
860 | e1f3808e | pbrook | { |
861 | e1f3808e | pbrook | int64_t res; |
862 | e1f3808e | pbrook | int32_t tmp; |
863 | e1f3808e | pbrook | res = (uint32_t)env->macc[acc]; |
864 | e1f3808e | pbrook | tmp = (int16_t)val; |
865 | e1f3808e | pbrook | res |= ((int64_t)tmp) << 32;
|
866 | e1f3808e | pbrook | env->macc[acc] = res; |
867 | e1f3808e | pbrook | res = (uint32_t)env->macc[acc + 1];
|
868 | e1f3808e | pbrook | tmp = val & 0xffff0000;
|
869 | e1f3808e | pbrook | res |= (int64_t)tmp << 16;
|
870 | e1f3808e | pbrook | env->macc[acc + 1] = res;
|
871 | e1f3808e | pbrook | } |
872 | e1f3808e | pbrook | |
873 | e1f3808e | pbrook | void HELPER(set_mac_extu)(CPUState *env, uint32_t val, uint32_t acc)
|
874 | e1f3808e | pbrook | { |
875 | e1f3808e | pbrook | uint64_t res; |
876 | e1f3808e | pbrook | res = (uint32_t)env->macc[acc]; |
877 | e1f3808e | pbrook | res |= ((uint64_t)(val & 0xffff)) << 32; |
878 | e1f3808e | pbrook | env->macc[acc] = res; |
879 | e1f3808e | pbrook | res = (uint32_t)env->macc[acc + 1];
|
880 | e1f3808e | pbrook | res |= (uint64_t)(val & 0xffff0000) << 16; |
881 | e1f3808e | pbrook | env->macc[acc + 1] = res;
|
882 | e1f3808e | pbrook | } |