| 725 |
|
start_brace (); |
| 726 |
|
printf ("\tuae_u32 %s;\n", value); |
| 727 |
|
break; |
| 728 |
– |
|
| 728 |
|
default: |
| 729 |
|
break; |
| 730 |
|
} |
| 745 |
|
} |
| 746 |
|
printf ("\t}\n"); |
| 747 |
|
return; |
| 748 |
+ |
|
| 749 |
|
case flag_logical: |
| 750 |
|
if (strcmp (value, "0") == 0) { |
| 751 |
|
printf ("\tSET_CZNV (FLAGVAL_Z);\n"); |
| 786 |
|
break; |
| 787 |
|
} |
| 788 |
|
#endif |
| 789 |
– |
|
| 789 |
|
genflags_normal (type, size, value, src, dst); |
| 790 |
|
} |
| 791 |
|
|
| 823 |
|
return i->stype == 3; |
| 824 |
|
} |
| 825 |
|
|
| 826 |
+ |
static const char * cflow_string_of(uae_u32 opcode) |
| 827 |
+ |
{ |
| 828 |
+ |
const char * cflow_type_str; |
| 829 |
+ |
|
| 830 |
+ |
int cflow_type = table68k[opcode].cflow & ~fl_trap; |
| 831 |
+ |
switch (cflow_type) { |
| 832 |
+ |
case fl_branch: cflow_type_str = "CFLOW_BRANCH"; break; |
| 833 |
+ |
case fl_jump: cflow_type_str = "CFLOW_JUMP"; break; |
| 834 |
+ |
case fl_return: cflow_type_str = "CFLOW_RETURN"; break; |
| 835 |
+ |
default: cflow_type_str = "CFLOW_NORMAL"; |
| 836 |
+ |
} |
| 837 |
+ |
|
| 838 |
+ |
/* Patch M68K_EXEC_RETURN instruction */ |
| 839 |
+ |
if (table68k[opcode].mnemo == i_EMULOP_RETURN) |
| 840 |
+ |
cflow_type_str = "CFLOW_EXEC_RETURN"; |
| 841 |
+ |
|
| 842 |
+ |
return cflow_type_str; |
| 843 |
+ |
} |
| 844 |
+ |
|
| 845 |
|
static void gen_opcode (unsigned long int opcode) |
| 846 |
|
{ |
| 847 |
|
struct instr *curi = table68k + opcode; |
| 975 |
|
printf ("\tuae_u16 newv_hi = (src & 0xF0) + (dst & 0xF0);\n"); |
| 976 |
|
printf ("\tuae_u16 newv, tmp_newv;\n"); |
| 977 |
|
printf ("\tint cflg;\n"); |
| 978 |
< |
printf ("\tnewv = tmp_newv = newv_hi + newv_lo;"); |
| 978 |
> |
printf ("\tnewv = tmp_newv = newv_hi + newv_lo;\n"); |
| 979 |
|
printf ("\tif (newv_lo > 9) { newv += 6; }\n"); |
| 980 |
|
printf ("\tcflg = (newv & 0x3F0) > 0x90;\n"); |
| 981 |
|
printf ("\tif (cflg) newv += 0x60;\n"); |
| 1007 |
|
printf ("\tuae_u16 newv;\n"); |
| 1008 |
|
printf ("\tint cflg;\n"); |
| 1009 |
|
printf ("\tif (newv_lo > 9) { newv_lo -= 6; }\n"); |
| 1010 |
< |
printf ("\tnewv = newv_hi + newv_lo;"); |
| 1010 |
> |
printf ("\tnewv = newv_hi + newv_lo;\n"); |
| 1011 |
|
printf ("\tcflg = (newv & 0x1F0) > 0x90;\n"); |
| 1012 |
|
printf ("\tif (cflg) newv -= 0x60;\n"); |
| 1013 |
|
printf ("\tSET_CFLG (cflg);\n"); |
| 1219 |
|
printf ("\tif ((format & 0xF000) == 0x0000) { break; }\n"); |
| 1220 |
|
printf ("\telse if ((format & 0xF000) == 0x1000) { ; }\n"); |
| 1221 |
|
printf ("\telse if ((format & 0xF000) == 0x2000) { m68k_areg(regs, 7) += 4; break; }\n"); |
| 1222 |
+ |
/* gb-- the next two lines are deleted in Bernie's gencpu.c */ |
| 1223 |
|
printf ("\telse if ((format & 0xF000) == 0x3000) { m68k_areg(regs, 7) += 4; break; }\n"); |
| 1224 |
|
printf ("\telse if ((format & 0xF000) == 0x7000) { m68k_areg(regs, 7) += 52; break; }\n"); |
| 1225 |
|
printf ("\telse if ((format & 0xF000) == 0x8000) { m68k_areg(regs, 7) += 50; break; }\n"); |
| 1308 |
|
m68k_pc_offset = 0; |
| 1309 |
|
break; |
| 1310 |
|
case i_Bcc: |
| 1311 |
+ |
if (0 && !using_prefetch && !using_exception_3 && (cpu_level >= 2)) { |
| 1312 |
+ |
/* gb-- variant probably more favorable to compiler optimizations |
| 1313 |
+ |
also assumes no prefetch buffer is used |
| 1314 |
+ |
Hmm, that would make sense with processors capable of conditional moves */ |
| 1315 |
+ |
if (curi->size == sz_long && next_cpu_level < 1) |
| 1316 |
+ |
next_cpu_level = 1; |
| 1317 |
+ |
genamode (curi->smode, "srcreg", curi->size, "src", 1, 0); |
| 1318 |
+ |
printf ("\tm68k_incpc (cctrue(%d) ? ((uae_s32)src + 2) : %d);\n", curi->cc, m68k_pc_offset); |
| 1319 |
+ |
m68k_pc_offset = 0; |
| 1320 |
+ |
} |
| 1321 |
+ |
else { |
| 1322 |
+ |
/* original code for branch instructions */ |
| 1323 |
|
if (curi->size == sz_long) { |
| 1324 |
|
if (cpu_level < 2) { |
| 1325 |
|
printf ("\tm68k_incpc(2);\n"); |
| 1343 |
|
printf ("\t}\n"); |
| 1344 |
|
need_endlabel = 1; |
| 1345 |
|
} |
| 1315 |
– |
#ifdef USE_COMPILER |
| 1316 |
– |
printf ("\tm68k_setpc_bcc(m68k_getpc() + 2 + (uae_s32)src);\n"); |
| 1317 |
– |
#else |
| 1346 |
|
printf ("\tm68k_incpc ((uae_s32)src + 2);\n"); |
| 1319 |
– |
#endif |
| 1347 |
|
fill_prefetch_0 (); |
| 1348 |
< |
printf ("\tgoto %s;\n", endlabelstr); |
| 1348 |
> |
printf ("cpuop_return(%s);\n", cflow_string_of(opcode)); |
| 1349 |
|
printf ("didnt_jump:;\n"); |
| 1350 |
|
need_endlabel = 1; |
| 1351 |
+ |
} |
| 1352 |
|
break; |
| 1353 |
|
case i_LEA: |
| 1354 |
|
genamode (curi->smode, "srcreg", curi->size, "src", 0, 0); |
| 1376 |
|
printf ("\t\t}\n"); |
| 1377 |
|
need_endlabel = 1; |
| 1378 |
|
} |
| 1351 |
– |
#ifdef USE_COMPILER |
| 1352 |
– |
printf ("\t\t\tm68k_setpc_bcc(m68k_getpc() + (uae_s32)offs + 2);\n"); |
| 1353 |
– |
#else |
| 1379 |
|
printf ("\t\t\tm68k_incpc((uae_s32)offs + 2);\n"); |
| 1355 |
– |
#endif |
| 1380 |
|
fill_prefetch_0 (); |
| 1381 |
< |
printf ("\t\tgoto %s;\n", endlabelstr); |
| 1381 |
> |
printf ("cpuop_return(%s);\n", cflow_string_of(opcode)); |
| 1382 |
|
printf ("\t\t}\n"); |
| 1383 |
|
printf ("\t}\n"); |
| 1384 |
|
need_endlabel = 1; |
| 1476 |
|
abort (); |
| 1477 |
|
} |
| 1478 |
|
printf ("\tSET_ZFLG (upper == reg || lower == reg);\n"); |
| 1479 |
< |
printf ("\tSET_CFLG (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n"); |
| 1479 |
> |
printf ("\tSET_CFLG_ALWAYS (lower <= upper ? reg < lower || reg > upper : reg > upper || reg < lower);\n"); |
| 1480 |
|
printf ("\tif ((extra & 0x800) && GET_CFLG) { Exception(6,oldpc); goto %s; }\n}\n", endlabelstr); |
| 1481 |
|
need_endlabel = 1; |
| 1482 |
|
break; |
| 2013 |
|
printf ("\ttmp = (bf0 << (offset & 7)) | (bf1 >> (8 - (offset & 7)));\n"); |
| 2014 |
|
} |
| 2015 |
|
printf ("\ttmp >>= (32 - width);\n"); |
| 2016 |
< |
printf ("\tSET_NFLG (tmp & (1 << (width-1)) ? 1 : 0);\n"); |
| 2016 |
> |
printf ("\tSET_NFLG_ALWAYS (tmp & (1 << (width-1)) ? 1 : 0);\n"); |
| 2017 |
|
printf ("\tSET_ZFLG (tmp == 0); SET_VFLG (0); SET_CFLG (0);\n"); |
| 2018 |
|
switch (curi->mnemo) { |
| 2019 |
|
case i_BFTST: |
| 2041 |
|
break; |
| 2042 |
|
case i_BFINS: |
| 2043 |
|
printf ("\ttmp = m68k_dreg(regs, (extra >> 12) & 7);\n"); |
| 2044 |
+ |
printf ("\tSET_NFLG_ALWAYS (tmp & (1 << (width - 1)) ? 1 : 0);\n"); |
| 2045 |
+ |
printf ("\tSET_ZFLG (tmp == 0);\n"); |
| 2046 |
|
break; |
| 2047 |
|
default: |
| 2048 |
|
break; |
| 2113 |
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0); |
| 2114 |
|
sync_m68k_pc (); |
| 2115 |
|
swap_opcode (); |
| 2116 |
< |
printf ("\tfpp_opp(opcode,extra);\n"); |
| 2116 |
> |
printf ("\tfpuop_arithmetic(opcode, extra);\n"); |
| 2117 |
|
break; |
| 2118 |
|
case i_FDBcc: |
| 2119 |
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0); |
| 2120 |
|
sync_m68k_pc (); |
| 2121 |
|
swap_opcode (); |
| 2122 |
< |
printf ("\tfdbcc_opp(opcode,extra);\n"); |
| 2122 |
> |
printf ("\tfpuop_dbcc(opcode, extra);\n"); |
| 2123 |
|
break; |
| 2124 |
|
case i_FScc: |
| 2125 |
|
genamode (curi->smode, "srcreg", curi->size, "extra", 1, 0); |
| 2126 |
|
sync_m68k_pc (); |
| 2127 |
|
swap_opcode (); |
| 2128 |
< |
printf ("\tfscc_opp(opcode,extra);\n"); |
| 2128 |
> |
printf ("\tfpuop_scc(opcode,extra);\n"); |
| 2129 |
|
break; |
| 2130 |
|
case i_FTRAPcc: |
| 2131 |
|
sync_m68k_pc (); |
| 2135 |
|
genamode (curi->smode, "srcreg", curi->size, "dummy", 1, 0); |
| 2136 |
|
sync_m68k_pc (); |
| 2137 |
|
swap_opcode (); |
| 2138 |
< |
printf ("\tftrapcc_opp(opcode,oldpc);\n"); |
| 2138 |
> |
printf ("\tfpuop_trapcc(opcode,oldpc);\n"); |
| 2139 |
|
break; |
| 2140 |
|
case i_FBcc: |
| 2141 |
|
sync_m68k_pc (); |
| 2144 |
|
genamode (curi->dmode, "srcreg", curi->size, "extra", 1, 0); |
| 2145 |
|
sync_m68k_pc (); |
| 2146 |
|
swap_opcode (); |
| 2147 |
< |
printf ("\tfbcc_opp(opcode,pc,extra);\n"); |
| 2147 |
> |
printf ("\tfpuop_bcc(opcode,pc,extra);\n"); |
| 2148 |
|
break; |
| 2149 |
|
case i_FSAVE: |
| 2150 |
|
sync_m68k_pc (); |
| 2151 |
|
swap_opcode (); |
| 2152 |
< |
printf ("\tfsave_opp(opcode);\n"); |
| 2152 |
> |
printf ("\tfpuop_save(opcode);\n"); |
| 2153 |
|
break; |
| 2154 |
|
case i_FRESTORE: |
| 2155 |
|
sync_m68k_pc (); |
| 2156 |
|
swap_opcode (); |
| 2157 |
< |
printf ("\tfrestore_opp(opcode);\n"); |
| 2157 |
> |
printf ("\tfpuop_restore(opcode);\n"); |
| 2158 |
|
break; |
| 2159 |
|
case i_CINVL: |
| 2160 |
|
case i_CINVP: |
| 2199 |
|
swap_opcode (); |
| 2200 |
|
printf ("\tmmu_op(opcode,extra);\n"); |
| 2201 |
|
break; |
| 2202 |
+ |
|
| 2203 |
+ |
case i_EMULOP_RETURN: |
| 2204 |
+ |
printf ("\tm68k_emulop_return();\n"); |
| 2205 |
+ |
m68k_pc_offset = 0; |
| 2206 |
+ |
break; |
| 2207 |
+ |
|
| 2208 |
+ |
case i_EMULOP: |
| 2209 |
+ |
printf ("\n"); |
| 2210 |
+ |
swap_opcode (); |
| 2211 |
+ |
printf ("\tm68k_emulop(opcode);\n"); |
| 2212 |
+ |
break; |
| 2213 |
+ |
|
| 2214 |
|
default: |
| 2215 |
|
abort (); |
| 2216 |
|
break; |
| 2222 |
|
static void generate_includes (FILE * f) |
| 2223 |
|
{ |
| 2224 |
|
fprintf (f, "#include \"sysdeps.h\"\n"); |
| 2225 |
+ |
|
| 2226 |
|
fprintf (f, "#include \"m68k.h\"\n"); |
| 2227 |
|
fprintf (f, "#include \"memory.h\"\n"); |
| 2228 |
|
fprintf (f, "#include \"readcpu.h\"\n"); |
| 2229 |
|
fprintf (f, "#include \"newcpu.h\"\n"); |
| 2230 |
+ |
fprintf (f, "#include \"fpu/fpu.h\"\n"); |
| 2231 |
|
fprintf (f, "#include \"cputbl.h\"\n"); |
| 2232 |
+ |
|
| 2233 |
+ |
fprintf (f, "#define SET_CFLG_ALWAYS(x) SET_CFLG(x)\n"); |
| 2234 |
+ |
fprintf (f, "#define SET_NFLG_ALWAYS(x) SET_NFLG(x)\n"); |
| 2235 |
+ |
fprintf (f, "#define CPUFUNC_FF(x) x##_ff\n"); |
| 2236 |
+ |
fprintf (f, "#define CPUFUNC_NF(x) x##_nf\n"); |
| 2237 |
+ |
fprintf (f, "#define CPUFUNC(x) CPUFUNC_FF(x)\n"); |
| 2238 |
+ |
|
| 2239 |
+ |
fprintf (f, "#ifdef NOFLAGS\n"); |
| 2240 |
+ |
fprintf (f, "# include \"noflags.h\"\n"); |
| 2241 |
+ |
fprintf (f, "#endif\n"); |
| 2242 |
|
} |
| 2243 |
|
|
| 2244 |
|
static int postfix; |
| 2262 |
|
return; |
| 2263 |
|
|
| 2264 |
|
if (opcode_next_clev[rp] != cpu_level) { |
| 2265 |
< |
fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp], |
| 2265 |
> |
fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, opcode_last_postfix[rp], |
| 2266 |
|
opcode, lookuptab[i].name); |
| 2267 |
|
return; |
| 2268 |
|
} |
| 2269 |
< |
fprintf (stblfile, "{ op_%lx_%d, 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name); |
| 2270 |
< |
fprintf (headerfile, "extern cpuop_func op_%lx_%d;\n", opcode, postfix); |
| 2271 |
< |
printf ("void REGPARAM2 op_%lx_%d(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name); |
| 2269 |
> |
|
| 2270 |
> |
if (table68k[opcode].flagdead == 0) |
| 2271 |
> |
/* force to the "ff" variant since the instruction doesn't set at all the condition codes */ |
| 2272 |
> |
fprintf (stblfile, "{ CPUFUNC_FF(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name); |
| 2273 |
> |
else |
| 2274 |
> |
fprintf (stblfile, "{ CPUFUNC(op_%lx_%d), 0, %ld }, /* %s */\n", opcode, postfix, opcode, lookuptab[i].name); |
| 2275 |
> |
|
| 2276 |
> |
fprintf (headerfile, "extern cpuop_func op_%lx_%d_nf;\n", opcode, postfix); |
| 2277 |
> |
fprintf (headerfile, "extern cpuop_func op_%lx_%d_ff;\n", opcode, postfix); |
| 2278 |
> |
printf ("cpuop_rettype REGPARAM2 CPUFUNC(op_%lx_%d)(uae_u32 opcode) /* %s */\n{\n", opcode, postfix, lookuptab[i].name); |
| 2279 |
> |
printf ("\tcpuop_begin();\n"); |
| 2280 |
> |
|
| 2281 |
> |
/* gb-- The "nf" variant for an instruction that doesn't set the condition |
| 2282 |
> |
codes at all is the same as the "ff" variant, so we don't need the "nf" |
| 2283 |
> |
variant to be compiled since it is mapped to the "ff" variant in the |
| 2284 |
> |
smalltbl. */ |
| 2285 |
> |
if (table68k[opcode].flagdead == 0) |
| 2286 |
> |
printf ("#ifndef NOFLAGS\n"); |
| 2287 |
|
|
| 2288 |
|
switch (table68k[opcode].stype) { |
| 2289 |
|
case 0: smsk = 7; break; |
| 2292 |
|
case 3: smsk = 7; break; |
| 2293 |
|
case 4: smsk = 7; break; |
| 2294 |
|
case 5: smsk = 63; break; |
| 2295 |
+ |
case 6: smsk = 255; break; |
| 2296 |
|
case 7: smsk = 3; break; |
| 2297 |
|
default: abort (); |
| 2298 |
|
} |
| 2303 |
|
&& table68k[opcode].smode != imm && table68k[opcode].smode != imm0 |
| 2304 |
|
&& table68k[opcode].smode != imm1 && table68k[opcode].smode != imm2 |
| 2305 |
|
&& table68k[opcode].smode != absw && table68k[opcode].smode != absl |
| 2306 |
< |
&& table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16) |
| 2306 |
> |
&& table68k[opcode].smode != PC8r && table68k[opcode].smode != PC16 |
| 2307 |
> |
/* gb-- We don't want to fetch the EmulOp code since the EmulOp() |
| 2308 |
> |
routine uses the whole opcode value. Maybe all the EmulOps |
| 2309 |
> |
could be expanded out but I don't think it is an improvement */ |
| 2310 |
> |
&& table68k[opcode].stype != 6 |
| 2311 |
> |
) |
| 2312 |
|
{ |
| 2313 |
|
if (table68k[opcode].spos == -1) { |
| 2314 |
|
if (((int) table68k[opcode].sreg) >= 128) |
| 2404 |
|
gen_opcode (opcode); |
| 2405 |
|
if (need_endlabel) |
| 2406 |
|
printf ("%s: ;\n", endlabelstr); |
| 2407 |
+ |
if (table68k[opcode].flagdead == 0) |
| 2408 |
+ |
printf ("\n#endif\n"); |
| 2409 |
+ |
printf ("\tcpuop_end(%s);\n", cflow_string_of(opcode)); |
| 2410 |
|
printf ("}\n"); |
| 2411 |
|
opcode_next_clev[rp] = next_cpu_level; |
| 2412 |
|
opcode_last_postfix[rp] = postfix; |
| 2434 |
|
opcode_next_clev[rp] = 0; |
| 2435 |
|
} |
| 2436 |
|
postfix = i; |
| 2437 |
< |
fprintf (stblfile, "struct cputbl op_smalltbl_%d[] = {\n", postfix); |
| 2437 |
> |
fprintf (stblfile, "struct cputbl CPUFUNC(op_smalltbl_%d)[] = {\n", postfix); |
| 2438 |
|
|
| 2439 |
|
/* sam: this is for people with low memory (eg. me :)) */ |
| 2440 |
|
printf ("\n" |
