Work at SourceForge, help us to make it a better place! We have an immediate need for a Support Technician in our San Francisco or Denver office.

Close

[18a56b]: src / compiler / generic / genesis.lisp Maximize Restore History

Download this file

genesis.lisp    3558 lines (3257 with data), 159.0 kB

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
;;;; "cold" core image builder: This is how we create a target Lisp
;;;; system from scratch, by converting from fasl files to an image
;;;; file in the cross-compilation host, without the help of the
;;;; target Lisp system.
;;;;
;;;; As explained by Rob MacLachlan on the CMU CL mailing list Wed, 06
;;;; Jan 1999 11:05:02 -0500, this cold load generator more or less
;;;; fakes up static function linking. I.e. it makes sure that all the
;;;; DEFUN-defined functions in the fasl files it reads are bound to the
;;;; corresponding symbols before execution starts. It doesn't do
;;;; anything to initialize variable values; instead it just arranges
;;;; for !COLD-INIT to be called at cold load time. !COLD-INIT is
;;;; responsible for explicitly initializing anything which has to be
;;;; initialized early before it transfers control to the ordinary
;;;; top level forms.
;;;;
;;;; (In CMU CL, and in SBCL as of 0.6.9 anyway, functions not defined
;;;; by DEFUN aren't set up specially by GENESIS. In particular,
;;;; structure slot accessors are not set up. Slot accessors are
;;;; available at cold init time because they're usually compiled
;;;; inline. They're not available as out-of-line functions until the
;;;; toplevel forms installing them have run.)
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; This software is derived from the CMU CL system, which was
;;;; written at Carnegie Mellon University and released into the
;;;; public domain. The software is in the public domain and is
;;;; provided with absolutely no warranty. See the COPYING and CREDITS
;;;; files for more information.
(in-package "SB!FASL")
;;; a magic number used to identify our core files
(defconstant core-magic
(logior (ash (sb!xc:char-code #\S) 24)
(ash (sb!xc:char-code #\B) 16)
(ash (sb!xc:char-code #\C) 8)
(sb!xc:char-code #\L)))
(defun round-up (number size)
#!+sb-doc
"Round NUMBER up to be an integral multiple of SIZE."
(* size (ceiling number size)))
;;;; implementing the concept of "vector" in (almost) portable
;;;; Common Lisp
;;;;
;;;; "If you only need to do such simple things, it doesn't really
;;;; matter which language you use." -- _ANSI Common Lisp_, p. 1, Paul
;;;; Graham (evidently not considering the abstraction "vector" to be
;;;; such a simple thing:-)
(eval-when (:compile-toplevel :load-toplevel :execute)
(defconstant +smallvec-length+
(expt 2 16)))
;;; an element of a BIGVEC -- a vector small enough that we have
;;; a good chance of it being portable to other Common Lisps
(deftype smallvec ()
`(simple-array (unsigned-byte 8) (,+smallvec-length+)))
(defun make-smallvec ()
(make-array +smallvec-length+ :element-type '(unsigned-byte 8)
:initial-element 0))
;;; a big vector, implemented as a vector of SMALLVECs
;;;
;;; KLUDGE: This implementation seems portable enough for our
;;; purposes, since realistically every modern implementation is
;;; likely to support vectors of at least 2^16 elements. But if you're
;;; masochistic enough to read this far into the contortions imposed
;;; on us by ANSI and the Lisp community, for daring to use the
;;; abstraction of a large linearly addressable memory space, which is
;;; after all only directly supported by the underlying hardware of at
;;; least 99% of the general-purpose computers in use today, then you
;;; may be titillated to hear that in fact this code isn't really
;;; portable, because as of sbcl-0.7.4 we need somewhat more than
;;; 16Mbytes to represent a core, and ANSI only guarantees that
;;; ARRAY-DIMENSION-LIMIT is not less than 1024. -- WHN 2002-06-13
(defstruct bigvec
(outer-vector (vector (make-smallvec)) :type (vector smallvec)))
;;; analogous to SVREF, but into a BIGVEC
(defun bvref (bigvec index)
(multiple-value-bind (outer-index inner-index)
(floor index +smallvec-length+)
(aref (the smallvec
(svref (bigvec-outer-vector bigvec) outer-index))
inner-index)))
(defun (setf bvref) (new-value bigvec index)
(multiple-value-bind (outer-index inner-index)
(floor index +smallvec-length+)
(setf (aref (the smallvec
(svref (bigvec-outer-vector bigvec) outer-index))
inner-index)
new-value)))
;;; analogous to LENGTH, but for a BIGVEC
;;;
;;; the length of BIGVEC, measured in the number of BVREFable bytes it
;;; can hold
(defun bvlength (bigvec)
(* (length (bigvec-outer-vector bigvec))
+smallvec-length+))
;;; analogous to WRITE-SEQUENCE, but for a BIGVEC
(defun write-bigvec-as-sequence (bigvec stream &key (start 0) end pad-with-zeros)
(let* ((bvlength (bvlength bigvec))
(data-length (min (or end bvlength) bvlength)))
(loop for i of-type index from start below data-length do
(write-byte (bvref bigvec i)
stream))
(when (and pad-with-zeros (< bvlength data-length))
(loop repeat (- data-length bvlength) do (write-byte 0 stream)))))
;;; analogous to READ-SEQUENCE-OR-DIE, but for a BIGVEC
(defun read-bigvec-as-sequence-or-die (bigvec stream &key (start 0) end)
(loop for i of-type index from start below (or end (bvlength bigvec)) do
(setf (bvref bigvec i)
(read-byte stream))))
;;; Grow BIGVEC (exponentially, so that large increases in size have
;;; asymptotic logarithmic cost per byte).
(defun expand-bigvec (bigvec)
(let* ((old-outer-vector (bigvec-outer-vector bigvec))
(length-old-outer-vector (length old-outer-vector))
(new-outer-vector (make-array (* 2 length-old-outer-vector))))
(dotimes (i length-old-outer-vector)
(setf (svref new-outer-vector i)
(svref old-outer-vector i)))
(loop for i from length-old-outer-vector below (length new-outer-vector) do
(setf (svref new-outer-vector i)
(make-smallvec)))
(setf (bigvec-outer-vector bigvec)
new-outer-vector))
bigvec)
;;;; looking up bytes and multi-byte values in a BIGVEC (considering
;;;; it as an image of machine memory on the cross-compilation target)
;;; BVREF-32 and friends. These are like SAP-REF-n, except that
;;; instead of a SAP we use a BIGVEC.
(macrolet ((make-bvref-n
(n)
(let* ((name (intern (format nil "BVREF-~A" n)))
(number-octets (/ n 8))
(ash-list-le
(loop for i from 0 to (1- number-octets)
collect `(ash (bvref bigvec (+ byte-index ,i))
,(* i 8))))
(ash-list-be
(loop for i from 0 to (1- number-octets)
collect `(ash (bvref bigvec
(+ byte-index
,(- number-octets 1 i)))
,(* i 8))))
(setf-list-le
(loop for i from 0 to (1- number-octets)
append
`((bvref bigvec (+ byte-index ,i))
(ldb (byte 8 ,(* i 8)) new-value))))
(setf-list-be
(loop for i from 0 to (1- number-octets)
append
`((bvref bigvec (+ byte-index ,i))
(ldb (byte 8 ,(- n 8 (* i 8))) new-value)))))
`(progn
(defun ,name (bigvec byte-index)
(logior ,@(ecase sb!c:*backend-byte-order*
(:little-endian ash-list-le)
(:big-endian ash-list-be))))
(defun (setf ,name) (new-value bigvec byte-index)
(setf ,@(ecase sb!c:*backend-byte-order*
(:little-endian setf-list-le)
(:big-endian setf-list-be))))))))
(make-bvref-n 8)
(make-bvref-n 16)
(make-bvref-n 32)
(make-bvref-n 64))
;; lispobj-sized word, whatever that may be
;; hopefully nobody ever wants a 128-bit SBCL...
#!+#.(cl:if (cl:= 64 sb!vm:n-word-bits) '(and) '(or))
(progn
(defun bvref-word (bytes index)
(bvref-64 bytes index))
(defun (setf bvref-word) (new-val bytes index)
(setf (bvref-64 bytes index) new-val)))
#!+#.(cl:if (cl:= 32 sb!vm:n-word-bits) '(and) '(or))
(progn
(defun bvref-word (bytes index)
(bvref-32 bytes index))
(defun (setf bvref-word) (new-val bytes index)
(setf (bvref-32 bytes index) new-val)))
;;;; representation of spaces in the core
;;; If there is more than one dynamic space in memory (i.e., if a
;;; copying GC is in use), then only the active dynamic space gets
;;; dumped to core.
(defvar *dynamic*)
(defconstant dynamic-core-space-id 1)
(defvar *static*)
(defconstant static-core-space-id 2)
(defvar *read-only*)
(defconstant read-only-core-space-id 3)
(defconstant max-core-space-id 3)
(defconstant deflated-core-space-id-flag 4)
(defconstant descriptor-low-bits 16
"the number of bits in the low half of the descriptor")
(defconstant target-space-alignment (ash 1 descriptor-low-bits)
"the alignment requirement for spaces in the target.
Must be at least (ASH 1 DESCRIPTOR-LOW-BITS)")
;;; a GENESIS-time representation of a memory space (e.g. read-only
;;; space, dynamic space, or static space)
(defstruct (gspace (:constructor %make-gspace)
(:copier nil))
;; name and identifier for this GSPACE
(name (missing-arg) :type symbol :read-only t)
(identifier (missing-arg) :type fixnum :read-only t)
;; the word address where the data will be loaded
(word-address (missing-arg) :type unsigned-byte :read-only t)
;; the data themselves. (Note that in CMU CL this was a pair of
;; fields SAP and WORDS-ALLOCATED, but that wasn't very portable.)
;; (And then in SBCL this was a VECTOR, but turned out to be
;; unportable too, since ANSI doesn't think that arrays longer than
;; 1024 (!) should needed by portable CL code...)
(bytes (make-bigvec) :read-only t)
;; the index of the next unwritten word (i.e. chunk of
;; SB!VM:N-WORD-BYTES bytes) in BYTES, or equivalently the number of
;; words actually written in BYTES. In order to convert to an actual
;; index into BYTES, thus must be multiplied by SB!VM:N-WORD-BYTES.
(free-word-index 0))
(defun gspace-byte-address (gspace)
(ash (gspace-word-address gspace) sb!vm:word-shift))
(def!method print-object ((gspace gspace) stream)
(print-unreadable-object (gspace stream :type t)
(format stream "~S" (gspace-name gspace))))
(defun make-gspace (name identifier byte-address)
(unless (zerop (rem byte-address target-space-alignment))
(error "The byte address #X~X is not aligned on a #X~X-byte boundary."
byte-address
target-space-alignment))
(%make-gspace :name name
:identifier identifier
:word-address (ash byte-address (- sb!vm:word-shift))))
;;;; representation of descriptors
(defun is-fixnum-lowtag (lowtag)
(zerop (logand lowtag sb!vm:fixnum-tag-mask)))
(defun is-other-immediate-lowtag (lowtag)
;; The other-immediate lowtags are similar to the fixnum lowtags, in
;; that they have an "effective length" that is shorter than is used
;; for the pointer lowtags. Unlike the fixnum lowtags, however, the
;; other-immediate lowtags are always effectively two bits wide.
(= (logand lowtag 3) sb!vm:other-immediate-0-lowtag))
(defstruct (descriptor
(:constructor make-descriptor
(high low &optional gspace word-offset))
(:copier nil))
;; the GSPACE that this descriptor is allocated in, or NIL if not set yet.
(gspace nil :type (or gspace (eql :load-time-value) null))
;; the offset in words from the start of GSPACE, or NIL if not set yet
(word-offset nil :type (or sb!vm:word null))
;; the high and low halves of the descriptor
;;
;; KLUDGE: Judging from the comments in genesis.lisp of the CMU CL
;; old-rt compiler, this split dates back from a very early version
;; of genesis where 32-bit integers were represented as conses of
;; two 16-bit integers. In any system with nice (UNSIGNED-BYTE 32)
;; structure slots, like CMU CL >= 17 or any version of SBCL, there
;; seems to be no reason to persist in this. -- WHN 19990917
high
low)
(def!method print-object ((des descriptor) stream)
(let ((lowtag (descriptor-lowtag des)))
(print-unreadable-object (des stream :type t)
(cond ((is-fixnum-lowtag lowtag)
(let ((unsigned (logior (ash (descriptor-high des)
(1+ (- descriptor-low-bits
sb!vm:n-lowtag-bits)))
(ash (descriptor-low des)
(- 1 sb!vm:n-lowtag-bits)))))
(format stream
"for fixnum: ~W"
(if (> unsigned #x1FFFFFFF)
(- unsigned #x40000000)
unsigned))))
((is-other-immediate-lowtag lowtag)
(format stream
"for other immediate: #X~X, type #b~8,'0B"
(ash (descriptor-bits des) (- sb!vm:n-widetag-bits))
(logand (descriptor-low des) sb!vm:widetag-mask)))
(t
(format stream
"for pointer: #X~X, lowtag #b~3,'0B, ~A"
(logior (ash (descriptor-high des) descriptor-low-bits)
(logandc2 (descriptor-low des) sb!vm:lowtag-mask))
lowtag
(let ((gspace (descriptor-gspace des)))
(if gspace
(gspace-name gspace)
"unknown"))))))))
;;; Return a descriptor for a block of LENGTH bytes out of GSPACE. The
;;; free word index is boosted as necessary, and if additional memory
;;; is needed, we grow the GSPACE. The descriptor returned is a
;;; pointer of type LOWTAG.
(defun allocate-cold-descriptor (gspace length lowtag)
(let* ((bytes (round-up length (ash 1 sb!vm:n-lowtag-bits)))
(old-free-word-index (gspace-free-word-index gspace))
(new-free-word-index (+ old-free-word-index
(ash bytes (- sb!vm:word-shift)))))
;; Grow GSPACE as necessary until it's big enough to handle
;; NEW-FREE-WORD-INDEX.
(do ()
((>= (bvlength (gspace-bytes gspace))
(* new-free-word-index sb!vm:n-word-bytes)))
(expand-bigvec (gspace-bytes gspace)))
;; Now that GSPACE is big enough, we can meaningfully grab a chunk of it.
(setf (gspace-free-word-index gspace) new-free-word-index)
(let ((ptr (+ (gspace-word-address gspace) old-free-word-index)))
(make-descriptor (ash ptr (- sb!vm:word-shift descriptor-low-bits))
(logior (ash (logand ptr
(1- (ash 1
(- descriptor-low-bits
sb!vm:word-shift))))
sb!vm:word-shift)
lowtag)
gspace
old-free-word-index))))
(defun descriptor-lowtag (des)
#!+sb-doc
"the lowtag bits for DES"
(logand (descriptor-low des) sb!vm:lowtag-mask))
(defun descriptor-bits (des)
(logior (ash (descriptor-high des) descriptor-low-bits)
(descriptor-low des)))
(defun descriptor-fixnum (des)
(let ((bits (descriptor-bits des)))
(if (logbitp (1- sb!vm:n-word-bits) bits)
;; KLUDGE: The (- SB!VM:N-WORD-BITS 2) term here looks right to
;; me, and it works, but in CMU CL it was (1- SB!VM:N-WORD-BITS),
;; and although that doesn't make sense for me, or work for me,
;; it's hard to see how it could have been wrong, since CMU CL
;; genesis worked. It would be nice to understand how this came
;; to be.. -- WHN 19990901
(logior (ash bits (- sb!vm:n-fixnum-tag-bits))
(ash -1 (1+ sb!vm:n-positive-fixnum-bits)))
(ash bits (- sb!vm:n-fixnum-tag-bits)))))
(defun descriptor-word-sized-integer (des)
;; Extract an (unsigned-byte 32), from either its fixnum or bignum
;; representation.
(let ((lowtag (descriptor-lowtag des)))
(if (is-fixnum-lowtag lowtag)
(make-random-descriptor (descriptor-fixnum des))
(read-wordindexed des 1))))
;;; common idioms
(defun descriptor-bytes (des)
(gspace-bytes (descriptor-intuit-gspace des)))
(defun descriptor-byte-offset (des)
(ash (descriptor-word-offset des) sb!vm:word-shift))
;;; If DESCRIPTOR-GSPACE is already set, just return that. Otherwise,
;;; figure out a GSPACE which corresponds to DES, set it into
;;; (DESCRIPTOR-GSPACE DES), set a consistent value into
;;; (DESCRIPTOR-WORD-OFFSET DES), and return the GSPACE.
(declaim (ftype (function (descriptor) gspace) descriptor-intuit-gspace))
(defun descriptor-intuit-gspace (des)
(or (descriptor-gspace des)
;; gspace wasn't set, now we have to search for it.
(let ((lowtag (descriptor-lowtag des))
(high (descriptor-high des))
(low (descriptor-low des)))
;; Non-pointer objects don't have a gspace.
(unless (or (eql lowtag sb!vm:fun-pointer-lowtag)
(eql lowtag sb!vm:instance-pointer-lowtag)
(eql lowtag sb!vm:list-pointer-lowtag)
(eql lowtag sb!vm:other-pointer-lowtag))
(error "don't even know how to look for a GSPACE for ~S" des))
(dolist (gspace (list *dynamic* *static* *read-only*)
(error "couldn't find a GSPACE for ~S" des))
;; Bounds-check the descriptor against the allocated area
;; within each gspace.
;;
;; Most of the faffing around in here involving ash and
;; various computed shift counts is due to the high/low
;; split representation of the descriptor bits and an
;; apparent disinclination to create intermediate values
;; larger than a target fixnum.
;;
;; This code relies on the fact that GSPACEs are aligned
;; such that the descriptor-low-bits low bits are zero.
(when (and (>= high (ash (gspace-word-address gspace)
(- sb!vm:word-shift descriptor-low-bits)))
(<= high (ash (+ (gspace-word-address gspace)
(gspace-free-word-index gspace))
(- sb!vm:word-shift descriptor-low-bits))))
;; Update the descriptor with the correct gspace and the
;; offset within the gspace and return the gspace.
(setf (descriptor-gspace des) gspace)
(setf (descriptor-word-offset des)
(+ (ash (- high (ash (gspace-word-address gspace)
(- sb!vm:word-shift
descriptor-low-bits)))
(- descriptor-low-bits sb!vm:word-shift))
(ash (logandc2 low sb!vm:lowtag-mask)
(- sb!vm:word-shift))))
(return gspace))))))
(defun make-random-descriptor (value)
(make-descriptor (logand (ash value (- descriptor-low-bits))
(1- (ash 1
(- sb!vm:n-word-bits
descriptor-low-bits))))
(logand value (1- (ash 1 descriptor-low-bits)))))
(defun make-fixnum-descriptor (num)
(when (>= (integer-length num)
(- sb!vm:n-word-bits sb!vm:n-fixnum-tag-bits))
(error "~W is too big for a fixnum." num))
(make-random-descriptor (ash num sb!vm:n-fixnum-tag-bits)))
(defun make-other-immediate-descriptor (data type)
(make-descriptor (ash data (- sb!vm:n-widetag-bits descriptor-low-bits))
(logior (logand (ash data (- descriptor-low-bits
sb!vm:n-widetag-bits))
(1- (ash 1 descriptor-low-bits)))
type)))
(defun make-character-descriptor (data)
(make-other-immediate-descriptor data sb!vm:character-widetag))
(defun descriptor-beyond (des offset type)
(let* ((low (logior (+ (logandc2 (descriptor-low des) sb!vm:lowtag-mask)
offset)
type))
(high (+ (descriptor-high des)
(ash low (- descriptor-low-bits)))))
(make-descriptor high (logand low (1- (ash 1 descriptor-low-bits))))))
;;;; miscellaneous variables and other noise
;;; a numeric value to be returned for undefined foreign symbols, or NIL if
;;; undefined foreign symbols are to be treated as an error.
;;; (In the first pass of GENESIS, needed to create a header file before
;;; the C runtime can be built, various foreign symbols will necessarily
;;; be undefined, but we don't need actual values for them anyway, and
;;; we can just use 0 or some other placeholder. In the second pass of
;;; GENESIS, all foreign symbols should be defined, so any undefined
;;; foreign symbol is a problem.)
;;;
;;; KLUDGE: It would probably be cleaner to rewrite GENESIS so that it
;;; never tries to look up foreign symbols in the first place unless
;;; it's actually creating a core file (as in the second pass) instead
;;; of using this hack to allow it to go through the motions without
;;; causing an error. -- WHN 20000825
(defvar *foreign-symbol-placeholder-value*)
;;; a handle on the trap object
(defvar *unbound-marker*)
;; was: (make-other-immediate-descriptor 0 sb!vm:unbound-marker-widetag)
;;; a handle on the NIL object
(defvar *nil-descriptor*)
;;; the head of a list of TOPLEVEL-THINGs describing stuff to be done
;;; when the target Lisp starts up
;;;
;;; Each TOPLEVEL-THING can be a function to be executed or a fixup or
;;; loadtime value, represented by (CONS KEYWORD ..). The FILENAME
;;; tells which fasl file each list element came from, for debugging
;;; purposes.
(defvar *current-reversed-cold-toplevels*)
;;; the head of a list of DEBUG-SOURCEs which need to be patched when
;;; the cold core starts up
(defvar *current-debug-sources*)
;;; foreign symbol references
(defparameter *cold-foreign-undefined-symbols* nil)
;;; the name of the object file currently being cold loaded (as a string, not a
;;; pathname), or NIL if we're not currently cold loading any object file
(defvar *cold-load-filename* nil)
(declaim (type (or string null) *cold-load-filename*))
;;;; miscellaneous stuff to read and write the core memory
;;; FIXME: should be DEFINE-MODIFY-MACRO
(defmacro cold-push (thing list)
#!+sb-doc
"Push THING onto the given cold-load LIST."
`(setq ,list (cold-cons ,thing ,list)))
(declaim (ftype (function (descriptor sb!vm:word) descriptor) read-wordindexed))
(defun read-wordindexed (address index)
#!+sb-doc
"Return the value which is displaced by INDEX words from ADDRESS."
(let* ((gspace (descriptor-intuit-gspace address))
(bytes (gspace-bytes gspace))
(byte-index (ash (+ index (descriptor-word-offset address))
sb!vm:word-shift))
(value (bvref-word bytes byte-index)))
(make-random-descriptor value)))
(declaim (ftype (function (descriptor) descriptor) read-memory))
(defun read-memory (address)
#!+sb-doc
"Return the value at ADDRESS."
(read-wordindexed address 0))
;;; (Note: In CMU CL, this function expected a SAP-typed ADDRESS
;;; value, instead of the object-and-offset we use here.)
(declaim (ftype (function (descriptor sb!vm:word descriptor) (values))
note-load-time-value-reference))
(defun note-load-time-value-reference (address offset marker)
(cold-push (cold-cons
(cold-intern :load-time-value-fixup)
(cold-cons address
(cold-cons (number-to-core offset)
(cold-cons
(number-to-core (descriptor-word-offset marker))
*nil-descriptor*))))
*current-reversed-cold-toplevels*)
(values))
(declaim (ftype (function (descriptor sb!vm:word (or symbol descriptor))) write-wordindexed))
(defun write-wordindexed (address index value)
#!+sb-doc
"Write VALUE displaced INDEX words from ADDRESS."
;; If we're passed a symbol as a value then it needs to be interned.
(let ((value (cond ((symbolp value) (cold-intern value))
(t value))))
(if (eql (descriptor-gspace value) :load-time-value)
(note-load-time-value-reference address
(- (ash index sb!vm:word-shift)
(logand (descriptor-bits address)
sb!vm:lowtag-mask))
value)
(let* ((bytes (gspace-bytes (descriptor-intuit-gspace address)))
(byte-index (ash (+ index (descriptor-word-offset address))
sb!vm:word-shift)))
(setf (bvref-word bytes byte-index) (descriptor-bits value))))))
(declaim (ftype (function (descriptor (or symbol descriptor))) write-memory))
(defun write-memory (address value)
#!+sb-doc
"Write VALUE (a DESCRIPTOR) at ADDRESS (also a DESCRIPTOR)."
(write-wordindexed address 0 value))
;;;; allocating images of primitive objects in the cold core
;;; There are three kinds of blocks of memory in the type system:
;;; * Boxed objects (cons cells, structures, etc): These objects have no
;;; header as all slots are descriptors.
;;; * Unboxed objects (bignums): There is a single header word that contains
;;; the length.
;;; * Vector objects: There is a header word with the type, then a word for
;;; the length, then the data.
(defun allocate-boxed-object (gspace length lowtag)
#!+sb-doc
"Allocate LENGTH words in GSPACE and return a new descriptor of type LOWTAG
pointing to them."
(allocate-cold-descriptor gspace (ash length sb!vm:word-shift) lowtag))
(defun allocate-unboxed-object (gspace element-bits length type)
#!+sb-doc
"Allocate LENGTH units of ELEMENT-BITS bits plus a header word in GSPACE and
return an ``other-pointer'' descriptor to them. Initialize the header word
with the resultant length and TYPE."
(let* ((bytes (/ (* element-bits length) sb!vm:n-byte-bits))
(des (allocate-cold-descriptor gspace
(+ bytes sb!vm:n-word-bytes)
sb!vm:other-pointer-lowtag)))
(write-memory des
(make-other-immediate-descriptor (ash bytes
(- sb!vm:word-shift))
type))
des))
(defun allocate-vector-object (gspace element-bits length type)
#!+sb-doc
"Allocate LENGTH units of ELEMENT-BITS size plus a header plus a length slot in
GSPACE and return an ``other-pointer'' descriptor to them. Initialize the
header word with TYPE and the length slot with LENGTH."
;; FIXME: Here and in ALLOCATE-UNBOXED-OBJECT, BYTES is calculated using
;; #'/ instead of #'CEILING, which seems wrong.
(let* ((bytes (/ (* element-bits length) sb!vm:n-byte-bits))
(des (allocate-cold-descriptor gspace
(+ bytes (* 2 sb!vm:n-word-bytes))
sb!vm:other-pointer-lowtag)))
(write-memory des (make-other-immediate-descriptor 0 type))
(write-wordindexed des
sb!vm:vector-length-slot
(make-fixnum-descriptor length))
des))
;;;; copying simple objects into the cold core
(defun base-string-to-core (string &optional (gspace *dynamic*))
#!+sb-doc
"Copy STRING (which must only contain STANDARD-CHARs) into the cold
core and return a descriptor to it."
;; (Remember that the system convention for storage of strings leaves an
;; extra null byte at the end to aid in call-out to C.)
(let* ((length (length string))
(des (allocate-vector-object gspace
sb!vm:n-byte-bits
(1+ length)
sb!vm:simple-base-string-widetag))
(bytes (gspace-bytes gspace))
(offset (+ (* sb!vm:vector-data-offset sb!vm:n-word-bytes)
(descriptor-byte-offset des))))
(write-wordindexed des
sb!vm:vector-length-slot
(make-fixnum-descriptor length))
(dotimes (i length)
(setf (bvref bytes (+ offset i))
(sb!xc:char-code (aref string i))))
(setf (bvref bytes (+ offset length))
0) ; null string-termination character for C
des))
(defun bignum-to-core (n)
#!+sb-doc
"Copy a bignum to the cold core."
(let* ((words (ceiling (1+ (integer-length n)) sb!vm:n-word-bits))
(handle (allocate-unboxed-object *dynamic*
sb!vm:n-word-bits
words
sb!vm:bignum-widetag)))
(declare (fixnum words))
(do ((index 1 (1+ index))
(remainder n (ash remainder (- sb!vm:n-word-bits))))
((> index words)
(unless (zerop (integer-length remainder))
;; FIXME: Shouldn't this be a fatal error?
(warn "~W words of ~W were written, but ~W bits were left over."
words n remainder)))
(let ((word (ldb (byte sb!vm:n-word-bits 0) remainder)))
(write-wordindexed handle index
(make-descriptor (ash word (- descriptor-low-bits))
(ldb (byte descriptor-low-bits 0)
word)))))
handle))
(defun number-pair-to-core (first second type)
#!+sb-doc
"Makes a number pair of TYPE (ratio or complex) and fills it in."
(let ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits 2 type)))
(write-wordindexed des 1 first)
(write-wordindexed des 2 second)
des))
(defun write-double-float-bits (address index x)
(let ((hi (double-float-high-bits x))
(lo (double-float-low-bits x)))
(ecase sb!vm::n-word-bits
(32
(let ((high-bits (make-random-descriptor hi))
(low-bits (make-random-descriptor lo)))
(ecase sb!c:*backend-byte-order*
(:little-endian
(write-wordindexed address index low-bits)
(write-wordindexed address (1+ index) high-bits))
(:big-endian
(write-wordindexed address index high-bits)
(write-wordindexed address (1+ index) low-bits)))))
(64
(let ((bits (make-random-descriptor
(ecase sb!c:*backend-byte-order*
(:little-endian (logior lo (ash hi 32)))
;; Just guessing.
#+nil (:big-endian (logior (logand hi #xffffffff)
(ash lo 32)))))))
(write-wordindexed address index bits))))
address))
(defun float-to-core (x)
(etypecase x
(single-float
;; 64-bit platforms have immediate single-floats.
#!+#.(cl:if (cl:= sb!vm:n-word-bits 64) '(and) '(or))
(make-random-descriptor (logior (ash (single-float-bits x) 32)
sb!vm::single-float-widetag))
#!-#.(cl:if (cl:= sb!vm:n-word-bits 64) '(and) '(or))
(let ((des (allocate-unboxed-object *dynamic*
sb!vm:n-word-bits
(1- sb!vm:single-float-size)
sb!vm:single-float-widetag)))
(write-wordindexed des
sb!vm:single-float-value-slot
(make-random-descriptor (single-float-bits x)))
des))
(double-float
(let ((des (allocate-unboxed-object *dynamic*
sb!vm:n-word-bits
(1- sb!vm:double-float-size)
sb!vm:double-float-widetag)))
(write-double-float-bits des sb!vm:double-float-value-slot x)))))
(defun complex-single-float-to-core (num)
(declare (type (complex single-float) num))
(let ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits
(1- sb!vm:complex-single-float-size)
sb!vm:complex-single-float-widetag)))
#!-x86-64
(progn
(write-wordindexed des sb!vm:complex-single-float-real-slot
(make-random-descriptor (single-float-bits (realpart num))))
(write-wordindexed des sb!vm:complex-single-float-imag-slot
(make-random-descriptor (single-float-bits (imagpart num)))))
#!+x86-64
(write-wordindexed des sb!vm:complex-single-float-data-slot
(make-random-descriptor
(logior (ldb (byte 32 0) (single-float-bits (realpart num)))
(ash (single-float-bits (imagpart num)) 32))))
des))
(defun complex-double-float-to-core (num)
(declare (type (complex double-float) num))
(let ((des (allocate-unboxed-object *dynamic* sb!vm:n-word-bits
(1- sb!vm:complex-double-float-size)
sb!vm:complex-double-float-widetag)))
(write-double-float-bits des sb!vm:complex-double-float-real-slot
(realpart num))
(write-double-float-bits des sb!vm:complex-double-float-imag-slot
(imagpart num))))
;;; Copy the given number to the core.
(defun number-to-core (number)
(typecase number
(integer (if (< (integer-length number)
(- sb!vm:n-word-bits sb!vm:n-fixnum-tag-bits))
(make-fixnum-descriptor number)
(bignum-to-core number)))
(ratio (number-pair-to-core (number-to-core (numerator number))
(number-to-core (denominator number))
sb!vm:ratio-widetag))
((complex single-float) (complex-single-float-to-core number))
((complex double-float) (complex-double-float-to-core number))
#!+long-float
((complex long-float)
(error "~S isn't a cold-loadable number at all!" number))
(complex (number-pair-to-core (number-to-core (realpart number))
(number-to-core (imagpart number))
sb!vm:complex-widetag))
(float (float-to-core number))
(t (error "~S isn't a cold-loadable number at all!" number))))
(declaim (ftype (function (sb!vm:word) descriptor) sap-int-to-core))
(defun sap-int-to-core (sap-int)
(let ((des (allocate-unboxed-object *dynamic*
sb!vm:n-word-bits
(1- sb!vm:sap-size)
sb!vm:sap-widetag)))
(write-wordindexed des
sb!vm:sap-pointer-slot
(make-random-descriptor sap-int))
des))
;;; Allocate a cons cell in GSPACE and fill it in with CAR and CDR.
(defun cold-cons (car cdr &optional (gspace *dynamic*))
(let ((dest (allocate-boxed-object gspace 2 sb!vm:list-pointer-lowtag)))
(write-memory dest car)
(write-wordindexed dest 1 cdr)
dest))
;;; Make a simple-vector on the target that holds the specified
;;; OBJECTS, and return its descriptor.
(defun vector-in-core (&rest objects)
(let* ((size (length objects))
(result (allocate-vector-object *dynamic* sb!vm:n-word-bits size
sb!vm:simple-vector-widetag)))
(dotimes (index size)
(write-wordindexed result (+ index sb!vm:vector-data-offset)
(pop objects)))
result))
;;;; symbol magic
;; Simulate *FREE-TLS-INDEX*. This is a count, not a displacement.
;; In C, sizeof counts 1 word for the variable-length interrupt_contexts[]
;; but primitive-object-size counts 0, so add 1, though in fact the C code
;; implies that it might have overcounted by 1. We could make this agnostic
;; of MAX-INTERRUPTS by moving the thread base register up by TLS-SIZE words,
;; using negative offsets for all dynamically assigned indices.
(defvar *genesis-tls-counter*
(+ 1 sb!vm::max-interrupts
(sb!vm:primitive-object-size
(find 'sb!vm::thread sb!vm:*primitive-objects*
:key #'sb!vm:primitive-object-name))))
#!+sb-thread
(progn
;; Assign SYMBOL the tls-index INDEX. SYMBOL must be a descriptor.
;; This is a backend support routine, but the style within this file
;; is to conditionalize by the target features.
(defun cold-assign-tls-index (symbol index)
#!+x86-64
(let ((header-word
(logior (ash index 32)
(descriptor-bits (read-wordindexed symbol 0)))))
(write-wordindexed symbol 0 (make-random-descriptor header-word)))
#!-x86-64
(write-wordindexed symbol sb!vm:symbol-tls-index-slot
(make-random-descriptor index)))
;; Return SYMBOL's tls-index,
;; choosing a new index if it doesn't have one yet.
(defun ensure-symbol-tls-index (symbol)
(let* ((cold-sym (cold-intern symbol))
(tls-index
#!+x86-64
(ldb (byte 32 32) (descriptor-bits (read-wordindexed cold-sym 0)))
#!-x86-64
(descriptor-bits
(read-wordindexed cold-sym sb!vm:symbol-tls-index-slot))))
(unless (plusp tls-index)
(let ((next (prog1 *genesis-tls-counter* (incf *genesis-tls-counter*))))
(setq tls-index (ash next sb!vm:word-shift))
(cold-assign-tls-index cold-sym tls-index)))
tls-index)))
;; A table of special variable names which get known TLS indices.
;; Some of them are mapped onto 'struct thread' and have pre-determined offsets.
;; Others are static symbols used with bind_variable() in the C runtime,
;; and might not, in the absence of this table, get an index assigned by genesis
;; depending on whether the cross-compiler used the BIND vop on them.
;; Indices for those static symbols can be chosen arbitrarily, which is to say
;; the value doesn't matter but must update the tls-counter correctly.
;; All symbols other than the ones in this table get the indices assigned
;; by the fasloader on demand.
#!+sb-thread
(defvar *known-tls-symbols*
;; FIXME: no mechanism exists to determine which static symbols C code will
;; dynamically bind. TLS is a finite resource, and wasting indices for all
;; static symbols isn't the best idea. This list was hand-made with 'grep'.
'(sb!vm:*alloc-signal*
sb!sys:*allow-with-interrupts*
sb!vm:*current-catch-block*
sb!vm::*current-unwind-protect-block*
sb!kernel:*free-interrupt-context-index*
sb!kernel:*gc-inhibit*
sb!kernel:*gc-pending*
sb!impl::*gc-safe*
sb!impl::*in-safepoint*
sb!sys:*interrupt-pending*
sb!sys:*interrupts-enabled*
sb!vm::*pinned-objects*
sb!kernel:*restart-clusters*
sb!kernel:*stop-for-gc-pending*
#!+sb-thruption
sb!sys:*thruption-pending*))
;;; Allocate (and initialize) a symbol.
(defun allocate-symbol (name &key (gspace *dynamic*))
(declare (simple-string name))
(let ((symbol (allocate-unboxed-object gspace
sb!vm:n-word-bits
(1- sb!vm:symbol-size)
sb!vm:symbol-header-widetag)))
(write-wordindexed symbol sb!vm:symbol-value-slot *unbound-marker*)
(write-wordindexed symbol
sb!vm:symbol-hash-slot
(make-fixnum-descriptor 0))
(write-wordindexed symbol sb!vm:symbol-info-slot *nil-descriptor*)
(write-wordindexed symbol sb!vm:symbol-name-slot
(base-string-to-core name *dynamic*))
(write-wordindexed symbol sb!vm:symbol-package-slot *nil-descriptor*)
symbol))
#!+sb-thread
(defun assign-tls-index (symbol cold-symbol)
(let ((index (info :variable :wired-tls symbol)))
(cond ((integerp index) ; thread slot
(cold-assign-tls-index cold-symbol index))
((memq symbol *known-tls-symbols*)
;; symbols without which the C runtime could not start
(shiftf index *genesis-tls-counter* (1+ *genesis-tls-counter*))
(cold-assign-tls-index cold-symbol (ash index sb!vm:word-shift))))))
;;; Set the cold symbol value of SYMBOL-OR-SYMBOL-DES, which can be either a
;;; descriptor of a cold symbol or (in an abbreviation for the
;;; most common usage pattern) an ordinary symbol, which will be
;;; automatically cold-interned.
(declaim (ftype (function ((or symbol descriptor) descriptor)) cold-set))
(defun cold-set (symbol-or-symbol-des value)
(let ((symbol-des (etypecase symbol-or-symbol-des
(descriptor symbol-or-symbol-des)
(symbol (cold-intern symbol-or-symbol-des)))))
(write-wordindexed symbol-des sb!vm:symbol-value-slot value)))
;;;; layouts and type system pre-initialization
;;; Since we want to be able to dump structure constants and
;;; predicates with reference layouts, we need to create layouts at
;;; cold-load time. We use the name to intern layouts by, and dump a
;;; list of all cold layouts in *!INITIAL-LAYOUTS* so that type system
;;; initialization can find them. The only thing that's tricky [sic --
;;; WHN 19990816] is initializing layout's layout, which must point to
;;; itself.
;;; a map from class names to lists of
;;; `(,descriptor ,name ,length ,inherits ,depth)
;;; KLUDGE: It would be more understandable and maintainable to use
;;; DEFSTRUCT (:TYPE LIST) here. -- WHN 19990823
(defvar *cold-layouts* (make-hash-table :test 'equal))
;;; a map from DESCRIPTOR-BITS of cold layouts to the name, for inverting
;;; mapping
(defvar *cold-layout-names* (make-hash-table :test 'eql))
;;; FIXME: *COLD-LAYOUTS* and *COLD-LAYOUT-NAMES* should be
;;; initialized by binding in GENESIS.
;;; the descriptor for layout's layout (needed when making layouts)
(defvar *layout-layout*)
(defconstant target-layout-length
(layout-length (find-layout 'layout)))
(defun target-layout-index (slot-name)
;; KLUDGE: this is a little bit sleazy, but the tricky thing is that
;; structure slots don't have a terribly firm idea of their names.
;; At least here if we change LAYOUT's package of definition, we
;; only have to change one thing...
(let* ((name (find-symbol (symbol-name slot-name) "SB!KERNEL"))
(layout (find-layout 'layout))
(dd (layout-info layout))
(slots (dd-slots dd))
(dsd (find name slots :key #'dsd-name)))
(aver dsd)
(dsd-index dsd)))
(defun cold-set-layout-slot (cold-layout slot-name value)
(write-wordindexed
cold-layout
(+ sb!vm:instance-slots-offset (target-layout-index slot-name))
value))
;;; Return a list of names created from the cold layout INHERITS data
;;; in X.
(defun listify-cold-inherits (x)
(let ((len (descriptor-fixnum (read-wordindexed x
sb!vm:vector-length-slot))))
(collect ((res))
(dotimes (index len)
(let* ((des (read-wordindexed x (+ sb!vm:vector-data-offset index)))
(found (gethash (descriptor-bits des) *cold-layout-names*)))
(if found
(res found)
(error "unknown descriptor at index ~S (bits = ~8,'0X)"
index
(descriptor-bits des)))))
(res))))
(declaim (ftype (function (symbol descriptor descriptor descriptor descriptor)
descriptor)
make-cold-layout))
(defun make-cold-layout (name length inherits depthoid nuntagged)
(let ((result (allocate-boxed-object *dynamic*
;; KLUDGE: Why 1+? -- WHN 19990901
;; header word? -- CSR 20051204
(1+ target-layout-length)
sb!vm:instance-pointer-lowtag)))
(write-memory result
(make-other-immediate-descriptor
target-layout-length sb!vm:instance-header-widetag))
;; KLUDGE: The offsets into LAYOUT below should probably be pulled out
;; of the cross-compiler's tables at genesis time instead of inserted
;; by hand as bare numeric constants. -- WHN ca. 19990901
;; Set slot 0 = the layout of the layout.
(write-wordindexed result sb!vm:instance-slots-offset *layout-layout*)
;; Don't set the CLOS hash value: done in cold-init instead.
;;
;; Set other slot values.
;;
;; leave CLASSOID uninitialized for now
(cold-set-layout-slot result 'invalid *nil-descriptor*)
(cold-set-layout-slot result 'inherits inherits)
(cold-set-layout-slot result 'depthoid depthoid)
(cold-set-layout-slot result 'length length)
(cold-set-layout-slot result 'info *nil-descriptor*)
(cold-set-layout-slot result 'pure *nil-descriptor*)
(cold-set-layout-slot result 'n-untagged-slots nuntagged)
(cold-set-layout-slot result 'source-location *nil-descriptor*)
(cold-set-layout-slot result '%for-std-class-b (make-fixnum-descriptor 0))
(cold-set-layout-slot result 'slot-list *nil-descriptor*)
(setf (gethash name *cold-layouts*)
(list result
name
(descriptor-fixnum length)
(listify-cold-inherits inherits)
(descriptor-fixnum depthoid)
(descriptor-fixnum nuntagged)))
(setf (gethash (descriptor-bits result) *cold-layout-names*) name)
result))
(defun initialize-layouts ()
(clrhash *cold-layouts*)
;; We initially create the layout of LAYOUT itself with NIL as the LAYOUT and
;; #() as INHERITS,
(setq *layout-layout* *nil-descriptor*)
(let ((xlayout-layout (find-layout 'layout)))
(aver (= 0 (layout-n-untagged-slots xlayout-layout)))
(setq *layout-layout*
(make-cold-layout 'layout
(number-to-core target-layout-length)
(vector-in-core)
(number-to-core (layout-depthoid xlayout-layout))
(number-to-core 0)))
(write-wordindexed
*layout-layout* sb!vm:instance-slots-offset *layout-layout*)
;; Then we create the layouts that we'll need to make a correct INHERITS
;; vector for the layout of LAYOUT itself..
;;
;; FIXME: The various LENGTH and DEPTHOID numbers should be taken from
;; the compiler's tables, not set by hand.
(let* ((t-layout
(make-cold-layout 't
(number-to-core 0)
(vector-in-core)
(number-to-core 0)
(number-to-core 0)))
(so-layout
(make-cold-layout 'structure-object
(number-to-core 1)
(vector-in-core t-layout)
(number-to-core 1)
(number-to-core 0)))
(bso-layout
(make-cold-layout 'structure!object
(number-to-core 1)
(vector-in-core t-layout so-layout)
(number-to-core 2)
(number-to-core 0)))
(layout-inherits (vector-in-core t-layout
so-layout
bso-layout)))
;; ..and return to backpatch the layout of LAYOUT.
(setf (fourth (gethash 'layout *cold-layouts*))
(listify-cold-inherits layout-inherits))
(cold-set-layout-slot *layout-layout* 'inherits layout-inherits))))
;;;; interning symbols in the cold image
;;; In order to avoid having to know about the package format, we
;;; build a data structure in *COLD-PACKAGE-SYMBOLS* that holds all
;;; interned symbols along with info about their packages. The data
;;; structure is a list of sublists, where the sublists have the
;;; following format:
;;; (<make-package-arglist>
;;; <internal-symbols>
;;; <external-symbols>
;;; <imported-internal-symbols>
;;; <imported-external-symbols>
;;; <shadowing-symbols>
;;; <package-documentation>)
;;;
;;; KLUDGE: It would be nice to implement the sublists as instances of
;;; a DEFSTRUCT (:TYPE LIST). (They'd still be lists, but at least we'd be
;;; using mnemonically-named operators to access them, instead of trying
;;; to remember what THIRD and FIFTH mean, and hoping that we never
;;; need to change the list layout..) -- WHN 19990825
;;; an alist from packages to lists of that package's symbols to be dumped
(defvar *cold-package-symbols*)
(declaim (type list *cold-package-symbols*))
;;; a map from descriptors to symbols, so that we can back up. The key
;;; is the address in the target core.
(defvar *cold-symbols*)
(declaim (type hash-table *cold-symbols*))
;;; sanity check for a symbol we're about to create on the target
;;;
;;; Make sure that the symbol has an appropriate package. In
;;; particular, catch the so-easy-to-make error of typing something
;;; like SB-KERNEL:%BYTE-BLT in cold sources when what you really
;;; need is SB!KERNEL:%BYTE-BLT.
(defun package-ok-for-target-symbol-p (package)
(let ((package-name (package-name package)))
(or
;; Cold interning things in these standard packages is OK. (Cold
;; interning things in the other standard package, CL-USER, isn't
;; OK. We just use CL-USER to expose symbols whose homes are in
;; other packages. Thus, trying to cold intern a symbol whose
;; home package is CL-USER probably means that a coding error has
;; been made somewhere.)
(find package-name '("COMMON-LISP" "KEYWORD") :test #'string=)
;; Cold interning something in one of our target-code packages,
;; which are ever-so-rigorously-and-elegantly distinguished by
;; this prefix on their names, is OK too.
(string= package-name "SB!" :end1 3 :end2 3)
;; This one is OK too, since it ends up being COMMON-LISP on the
;; target.
(string= package-name "SB-XC")
;; Anything else looks bad. (maybe COMMON-LISP-USER? maybe an extension
;; package in the xc host? something we can't think of
;; a valid reason to cold intern, anyway...)
)))
;;; like SYMBOL-PACKAGE, but safe for symbols which end up on the target
;;;
;;; Most host symbols we dump onto the target are created by SBCL
;;; itself, so that as long as we avoid gratuitously
;;; cross-compilation-unfriendly hacks, it just happens that their
;;; SYMBOL-PACKAGE in the host system corresponds to their
;;; SYMBOL-PACKAGE in the target system. However, that's not the case
;;; in the COMMON-LISP package, where we don't get to create the
;;; symbols but instead have to use the ones that the xc host created.
;;; In particular, while ANSI specifies which symbols are exported
;;; from COMMON-LISP, it doesn't specify that their home packages are
;;; COMMON-LISP, so the xc host can keep them in random packages which
;;; don't exist on the target (e.g. CLISP keeping some CL-exported
;;; symbols in the CLOS package).
(defun symbol-package-for-target-symbol (symbol)
;; We want to catch weird symbols like CLISP's
;; CL:FIND-METHOD=CLOS::FIND-METHOD, but we don't want to get
;; sidetracked by ordinary symbols like :CHARACTER which happen to
;; have the same SYMBOL-NAME as exports from COMMON-LISP.
(multiple-value-bind (cl-symbol cl-status)
(find-symbol (symbol-name symbol) *cl-package*)
(if (and (eq symbol cl-symbol)
(eq cl-status :external))
;; special case, to work around possible xc host weirdness
;; in COMMON-LISP package
*cl-package*
;; ordinary case
(let ((result (symbol-package symbol)))
(unless (package-ok-for-target-symbol-p result)
(bug "~A in bad package for target: ~A" symbol result))
result))))
;;; Return a handle on an interned symbol. If necessary allocate the
;;; symbol and record which package the symbol was referenced in. When
;;; we allocate the symbol, make sure we record a reference to the
;;; symbol in the home package so that the package gets set.
(defun cold-intern (symbol
&key
(package (symbol-package-for-target-symbol symbol))
(gspace *dynamic*))
(aver (package-ok-for-target-symbol-p package))
;; Anything on the cross-compilation host which refers to the target
;; machinery through the host SB-XC package should be translated to
;; something on the target which refers to the same machinery
;; through the target COMMON-LISP package.
(let ((p (find-package "SB-XC")))
(when (eq package p)
(setf package *cl-package*))
(when (eq (symbol-package symbol) p)
(setf symbol (intern (symbol-name symbol) *cl-package*))))
(let (;; Information about each cold-interned symbol is stored
;; in COLD-INTERN-INFO.
;; (CAR COLD-INTERN-INFO) = descriptor of symbol
;; (CDR COLD-INTERN-INFO) = list of packages, other than symbol's
;; own package, referring to symbol
;; (*COLD-PACKAGE-SYMBOLS* and *COLD-SYMBOLS* store basically the
;; same information, but with the mapping running the opposite way.)
(cold-intern-info (get symbol 'cold-intern-info)))
(unless cold-intern-info
(cond ((eq (symbol-package-for-target-symbol symbol) package)
(let ((handle (allocate-symbol (symbol-name symbol) :gspace gspace)))
#!+sb-thread
(assign-tls-index symbol handle)
(setf (gethash (descriptor-bits handle) *cold-symbols*) symbol)
(when (eq package *keyword-package*)
(cold-set handle handle))
(setq cold-intern-info
(setf (get symbol 'cold-intern-info) (cons handle nil)))))
(t
(cold-intern symbol)
(setq cold-intern-info (get symbol 'cold-intern-info)))))
(unless (or (null package)
(member package (cdr cold-intern-info)))
(push package (cdr cold-intern-info))
(let* ((old-cps-entry (assoc package *cold-package-symbols*))
(cps-entry (or old-cps-entry
(car (push (list package)
*cold-package-symbols*)))))
(unless old-cps-entry
(/show "created *COLD-PACKAGE-SYMBOLS* entry for" package symbol))
(push symbol (rest cps-entry))))
(car cold-intern-info)))
;;; Construct and return a value for use as *NIL-DESCRIPTOR*.
;;; It might be nice to put NIL on a readonly page by itself to prevent unsafe
;;; code from destroying the world with (RPLACx nil 'kablooey)
(defun make-nil-descriptor ()
(let* ((des (allocate-unboxed-object
*static*
sb!vm:n-word-bits
sb!vm:symbol-size
0))
(result (make-descriptor (descriptor-high des)
(+ (descriptor-low des)
(* 2 sb!vm:n-word-bytes)
(- sb!vm:list-pointer-lowtag
sb!vm:other-pointer-lowtag)))))
(write-wordindexed des
1
(make-other-immediate-descriptor
0
sb!vm:symbol-header-widetag))
(write-wordindexed des
(+ 1 sb!vm:symbol-value-slot)
result)
(write-wordindexed des
(+ 2 sb!vm:symbol-value-slot)
result)
(write-wordindexed des
(+ 1 sb!vm:symbol-info-slot)
(cold-cons result result)) ; NIL's info is (nil . nil)
(write-wordindexed des
(+ 1 sb!vm:symbol-name-slot)
;; This is *DYNAMIC*, and DES is *STATIC*,
;; because that's the way CMU CL did it; I'm
;; not sure whether there's an underlying
;; reason. -- WHN 1990826
(base-string-to-core "NIL" *dynamic*))
(write-wordindexed des
(+ 1 sb!vm:symbol-package-slot)
result)
(setf (get nil 'cold-intern-info)
(cons result nil))
(cold-intern nil)
result))
;;; Since the initial symbols must be allocated before we can intern
;;; anything else, we intern those here. We also set the value of T.
(defun initialize-non-nil-symbols ()
#!+sb-doc
"Initialize the cold load symbol-hacking data structures."
;; Intern the others.
(dolist (symbol sb!vm:*static-symbols*)
(let* ((des (cold-intern symbol :gspace *static*))
(offset-wanted (sb!vm:static-symbol-offset symbol))
(offset-found (- (descriptor-low des)
(descriptor-low *nil-descriptor*))))
(unless (= offset-wanted offset-found)
;; FIXME: should be fatal
(warn "Offset from ~S to ~S is ~W, not ~W"
symbol
nil
offset-found
offset-wanted))))
;; Establish the value of T.
(let ((t-symbol (cold-intern t :gspace *static*)))
(cold-set t-symbol t-symbol))
;; Establish the value of *PSEUDO-ATOMIC-BITS* so that the
;; allocation sequences that expect it to be zero upon entrance
;; actually find it to be so.
#!+(or x86-64 x86)
(let ((p-a-a-symbol (cold-intern '*pseudo-atomic-bits*
:gspace *static*)))
(cold-set p-a-a-symbol (make-fixnum-descriptor 0))))
;;; a helper function for FINISH-SYMBOLS: Return a cold alist suitable
;;; to be stored in *!INITIAL-LAYOUTS*.
(defun cold-list-all-layouts ()
(let ((layouts nil)
(result *nil-descriptor*))
(maphash (lambda (key stuff)
(push (cons key (first stuff)) layouts))
*cold-layouts*)
(flet ((sorter (x y)
(let ((xpn (package-name (symbol-package-for-target-symbol x)))
(ypn (package-name (symbol-package-for-target-symbol y))))
(cond
((string= x y) (string< xpn ypn))
(t (string< x y))))))
(setq layouts (sort layouts #'sorter :key #'car)))
(dolist (layout layouts result)
(cold-push (cold-cons (cold-intern (car layout)) (cdr layout))
result))))
;;; Establish initial values for magic symbols.
;;;
;;; Scan over all the symbols referenced in each package in
;;; *COLD-PACKAGE-SYMBOLS* making that for each one there's an
;;; appropriate entry in the *!INITIAL-SYMBOLS* data structure to
;;; intern it.
(defun finish-symbols ()
;; I think the point of setting these functions into SYMBOL-VALUEs
;; here, instead of using SYMBOL-FUNCTION, is that in CMU CL
;; SYMBOL-FUNCTION reduces to FDEFINITION, which is a pretty
;; hairy operation (involving globaldb.lisp etc.) which we don't
;; want to invoke early in cold init. -- WHN 2001-12-05
;;
;; FIXME: So OK, that's a reasonable reason to do something weird like
;; this, but this is still a weird thing to do, and we should change
;; the names to highlight that something weird is going on. Perhaps
;; *MAYBE-GC-FUN*, *INTERNAL-ERROR-FUN*, *HANDLE-BREAKPOINT-FUN*,
;; and *HANDLE-FUN-END-BREAKPOINT-FUN*...
(dolist (symbol sb!vm::*c-callable-static-symbols*)
(cold-set symbol (cold-fdefinition-object (cold-intern symbol))))
(cold-set 'sb!vm::*current-catch-block* (make-fixnum-descriptor 0))
(cold-set 'sb!vm::*current-unwind-protect-block* (make-fixnum-descriptor 0))
(cold-set '*free-interrupt-context-index* (make-fixnum-descriptor 0))
(cold-set '*!initial-layouts* (cold-list-all-layouts))
#!+sb-thread
(progn
(cold-set 'sb!vm::*free-tls-index*
(make-random-descriptor (ash *genesis-tls-counter*
sb!vm:word-shift)))
(cold-set 'sb!vm::*tls-index-lock* (make-fixnum-descriptor 0)))
(/show "dumping packages" (mapcar #'car *cold-package-symbols*))
(let ((initial-symbols *nil-descriptor*))
(dolist (cold-package-symbols-entry *cold-package-symbols*)
(let* ((cold-package (car cold-package-symbols-entry))
(symbols (cdr cold-package-symbols-entry))
(shadows (package-shadowing-symbols cold-package))
(documentation (base-string-to-core
;; KLUDGE: NIL punned as 0-length string.
(unless
;; don't propagate the arbitrary
;; docstring from host packages into
;; the core
(or (eql cold-package *cl-package*)
(eql cold-package *keyword-package*))
(documentation cold-package t))))
(internal-count 0)
(external-count 0)
(internal *nil-descriptor*)
(external *nil-descriptor*)
(imported-internal *nil-descriptor*)
(imported-external *nil-descriptor*)
(shadowing *nil-descriptor*))
(declare (type package cold-package)) ; i.e. not a target descriptor
(/show "dumping" cold-package symbols)
;; FIXME: Add assertions here to make sure that inappropriate stuff
;; isn't being dumped:
;; * the CL-USER package
;; * the SB-COLD package
;; * any internal symbols in the CL package
;; * basically any package other than CL, KEYWORD, or the packages
;; in package-data-list.lisp-expr
;; and that the structure of the KEYWORD package (e.g. whether
;; any symbols are internal to it) matches what we want in the
;; target SBCL.
;; FIXME: It seems possible that by looking at the contents of
;; packages in the target SBCL we could find which symbols in
;; package-data-lisp.lisp-expr are now obsolete. (If I
;; understand correctly, only symbols which actually have
;; definitions or which are otherwise referred to actually end
;; up in the target packages.)
(dolist (symbol symbols)
(let ((handle (car (get symbol 'cold-intern-info)))
(imported-p (not (eq (symbol-package-for-target-symbol symbol)
cold-package))))
(multiple-value-bind (found where)
(find-symbol (symbol-name symbol) cold-package)
(unless (and where (eq found symbol))
(error "The symbol ~S is not available in ~S."
symbol
cold-package))
(when (memq symbol shadows)
(cold-push handle shadowing))
(case where
(:internal (if imported-p
(cold-push handle imported-internal)
(progn
(cold-push handle internal)
(incf internal-count))))
(:external (if imported-p
(cold-push handle imported-external)
(progn
(cold-push handle external)
(incf external-count))))))))
(let ((r *nil-descriptor*))
(cold-push documentation r)
(cold-push shadowing r)
(cold-push imported-external r)
(cold-push imported-internal r)
(cold-push external r)
(cold-push internal r)
(cold-push (make-make-package-args cold-package
internal-count
external-count)
r)
;; FIXME: It would be more space-efficient to use vectors
;; instead of lists here, and space-efficiency here would be
;; nice, since it would reduce the peak memory usage in
;; genesis and cold init.
(cold-push r initial-symbols))))
(cold-set '*!initial-symbols* initial-symbols))
(cold-set '*!initial-fdefn-objects* (list-all-fdefn-objects))
(cold-set '*!reversed-cold-toplevels* *current-reversed-cold-toplevels*)
(cold-set '*!initial-debug-sources* *current-debug-sources*)
#!+(or x86 x86-64)
(progn
(cold-set 'sb!vm::*fp-constant-0d0* (number-to-core 0d0))
(cold-set 'sb!vm::*fp-constant-1d0* (number-to-core 1d0))
(cold-set 'sb!vm::*fp-constant-0f0* (number-to-core 0f0))
(cold-set 'sb!vm::*fp-constant-1f0* (number-to-core 1f0))))
;;; Make a cold list that can be used as the arg list to MAKE-PACKAGE in
;;; order to make a package that is similar to PKG.
(defun make-make-package-args (pkg internal-count external-count)
(let* ((use *nil-descriptor*)
(cold-nicknames *nil-descriptor*)
(res *nil-descriptor*))
(dolist (u (package-use-list pkg))
(when (assoc u *cold-package-symbols*)
(cold-push (base-string-to-core (package-name u)) use)))
(let* ((pkg-name (package-name pkg))
;; Make the package nickname lists for the standard packages
;; be the minimum specified by ANSI, regardless of what value
;; the cross-compilation host happens to use.
(warm-nicknames (cond ((string= pkg-name "COMMON-LISP")
'("CL"))
((string= pkg-name "COMMON-LISP-USER")
'("CL-USER"))
((string= pkg-name "KEYWORD")
'())
;; For packages other than the
;; standard packages, the nickname
;; list was specified by our package
;; setup code, not by properties of
;; what cross-compilation host we
;; happened to use, and we can just
;; propagate it into the target.
(t
(package-nicknames pkg)))))
(dolist (warm-nickname warm-nicknames)
(cold-push (base-string-to-core warm-nickname) cold-nicknames)))
;; INTERNAL-COUNT and EXTERNAL-COUNT are the number of symbols that
;; the package contains in the core. We arrange for the package
;; symbol tables to be created somewhat larger so that they don't
;; need to be rehashed so easily when additional symbols are
;; interned during the warm build.
(cold-push (number-to-core (truncate internal-count 0.8)) res)
(cold-push (cold-intern :internal-symbols) res)
(cold-push (number-to-core (truncate external-count 0.8)) res)
(cold-push (cold-intern :external-symbols) res)
(cold-push cold-nicknames res)
(cold-push (cold-intern :nicknames) res)
(cold-push use res)
(cold-push (cold-intern :use) res)
(cold-push (base-string-to-core (package-name pkg)) res)
res))
;;;; functions and fdefinition objects
;;; a hash table mapping from fdefinition names to descriptors of cold
;;; objects
;;;
;;; Note: Since fdefinition names can be lists like '(SETF FOO), and
;;; we want to have only one entry per name, this must be an 'EQUAL
;;; hash table, not the default 'EQL.
(defvar *cold-fdefn-objects*)
(defvar *cold-fdefn-gspace* nil)
;;; Given a cold representation of a symbol, return a warm
;;; representation.
(defun warm-symbol (des)
;; Note that COLD-INTERN is responsible for keeping the
;; *COLD-SYMBOLS* table up to date, so if DES happens to refer to an
;; uninterned symbol, the code below will fail. But as long as we
;; don't need to look up uninterned symbols during bootstrapping,
;; that's OK..
(multiple-value-bind (symbol found-p)
(gethash (descriptor-bits des) *cold-symbols*)
(declare (type symbol symbol))
(unless found-p
(error "no warm symbol"))
symbol))
;;; like CL:CAR, CL:CDR, and CL:NULL but for cold values
(defun cold-car (des)
(aver (= (descriptor-lowtag des) sb!vm:list-pointer-lowtag))
(read-wordindexed des sb!vm:cons-car-slot))
(defun cold-cdr (des)
(aver (= (descriptor-lowtag des) sb!vm:list-pointer-lowtag))
(read-wordindexed des sb!vm:cons-cdr-slot))
(defun cold-null (des)
(= (descriptor-bits des)
(descriptor-bits *nil-descriptor*)))
;;; Given a cold representation of a function name, return a warm
;;; representation.
(declaim (ftype (function ((or symbol descriptor)) (or symbol list)) warm-fun-name))
(defun warm-fun-name (des)
(let ((result
(if (symbolp des)
;; This parallels the logic at the start of COLD-INTERN
;; which re-homes symbols in SB-XC to COMMON-LISP.
(if (eq (symbol-package des) (find-package "SB-XC"))
(intern (symbol-name des) *cl-package*)
des)
(ecase (descriptor-lowtag des)
(#.sb!vm:list-pointer-lowtag
(aver (not (cold-null des))) ; function named NIL? please no..
;; Do cold (DESTRUCTURING-BIND (COLD-CAR COLD-CADR) DES ..).
(let* ((car-des (cold-car des))
(cdr-des (cold-cdr des))
(cadr-des (cold-car cdr-des))
(cddr-des (cold-cdr cdr-des)))
(aver (cold-null cddr-des))
(list (warm-symbol car-des)
(warm-symbol cadr-des))))
(#.sb!vm:other-pointer-lowtag
(warm-symbol des))))))
(legal-fun-name-or-type-error result)
result))
(defun cold-fdefinition-object (cold-name &optional leave-fn-raw)
(declare (type (or symbol descriptor) cold-name))
(/show0 "/cold-fdefinition-object")
(let ((warm-name (warm-fun-name cold-name)))
(or (gethash warm-name *cold-fdefn-objects*)
(let ((fdefn (allocate-boxed-object (or *cold-fdefn-gspace* *dynamic*)
(1- sb!vm:fdefn-size)
sb!vm:other-pointer-lowtag)))
(setf (gethash warm-name *cold-fdefn-objects*) fdefn)
(write-memory fdefn (make-other-immediate-descriptor
(1- sb!vm:fdefn-size) sb!vm:fdefn-widetag))
(write-wordindexed fdefn sb!vm:fdefn-name-slot cold-name)
(unless leave-fn-raw
(write-wordindexed fdefn sb!vm:fdefn-fun-slot
*nil-descriptor*)
(write-wordindexed fdefn
sb!vm:fdefn-raw-addr-slot
(make-random-descriptor
(cold-foreign-symbol-address "undefined_tramp"))))
fdefn))))
;;; Handle the at-cold-init-time, fset-for-static-linkage operation
;;; requested by FOP-FSET.
(defun static-fset (cold-name defn)
(declare (type (or symbol descriptor) cold-name))
(let ((fdefn (cold-fdefinition-object cold-name t))
(type (logand (descriptor-low (read-memory defn)) sb!vm:widetag-mask)))
(write-wordindexed fdefn sb!vm:fdefn-fun-slot defn)
(write-wordindexed fdefn
sb!vm:fdefn-raw-addr-slot
(ecase type
(#.sb!vm:simple-fun-header-widetag
(/show0 "static-fset (simple-fun)")
#!+sparc
defn
#!-sparc
(make-random-descriptor
(+ (logandc2 (descriptor-bits defn)
sb!vm:lowtag-mask)
(ash sb!vm:simple-fun-code-offset
sb!vm:word-shift))))
(#.sb!vm:closure-header-widetag
(/show0 "/static-fset (closure)")
(make-random-descriptor
(cold-foreign-symbol-address "closure_tramp")))))
fdefn))
(defun initialize-static-fns ()
(let ((*cold-fdefn-gspace* *static*))
(dolist (sym sb!vm:*static-funs*)
(let* ((fdefn (cold-fdefinition-object (cold-intern sym)))
(offset (- (+ (- (descriptor-low fdefn)
sb!vm:other-pointer-lowtag)
(* sb!vm:fdefn-raw-addr-slot sb!vm:n-word-bytes))
(descriptor-low *nil-descriptor*)))
(desired (sb!vm:static-fun-offset sym)))
(unless (= offset desired)
;; FIXME: should be fatal
(error "Offset from FDEFN ~S to ~S is ~W, not ~W."
sym nil offset desired))))))
(defun list-all-fdefn-objects ()
(let ((fdefns nil)
(result *nil-descriptor*))
(maphash (lambda (key value)
(push (cons key value) fdefns))
*cold-fdefn-objects*)
(flet ((sorter (x y)
(let* ((xbn (fun-name-block-name x))
(ybn (fun-name-block-name y))
(xbnpn (package-name (symbol-package-for-target-symbol xbn)))
(ybnpn (package-name (symbol-package-for-target-symbol ybn))))
(cond
((eql xbn ybn) (consp x))
((string= xbn ybn) (string< xbnpn ybnpn))
(t (string< xbn ybn))))))
(setq fdefns (sort fdefns #'sorter :key #'car)))
(dolist (fdefn fdefns result)
(cold-push (cdr fdefn) result))))
;;;; fixups and related stuff
;;; an EQUAL hash table
(defvar *cold-foreign-symbol-table*)
(declaim (type hash-table *cold-foreign-symbol-table*))
;; Read the sbcl.nm file to find the addresses for foreign-symbols in
;; the C runtime.
(defun load-cold-foreign-symbol-table (filename)
(/show "load-cold-foreign-symbol-table" filename)
(with-open-file (file filename)
(loop for line = (read-line file nil nil)
while line do
;; UNIX symbol tables might have tabs in them, and tabs are
;; not in Common Lisp STANDARD-CHAR, so there seems to be no
;; nice portable way to deal with them within Lisp, alas.
;; Fortunately, it's easy to use UNIX command line tools like
;; sed to remove the problem, so it's not too painful for us
;; to push responsibility for converting tabs to spaces out to
;; the caller.
;;
;; Other non-STANDARD-CHARs are problematic for the same reason.
;; Make sure that there aren't any..
(let ((ch (find-if (lambda (char)
(not (typep char 'standard-char)))
line)))
(when ch
(error "non-STANDARD-CHAR ~S found in foreign symbol table:~%~S"
ch
line)))
(setf line (string-trim '(#\space) line))
(let ((p1 (position #\space line :from-end nil))
(p2 (position #\space line :from-end t)))
(if (not (and p1 p2 (< p1 p2)))
;; KLUDGE: It's too messy to try to understand all
;; possible output from nm, so we just punt the lines we
;; don't recognize. We realize that there's some chance
;; that might get us in trouble someday, so we warn
;; about it.
(warn "ignoring unrecognized line ~S in ~A" line filename)
(multiple-value-bind (value name)
(if (string= "0x" line :end2 2)
(values (parse-integer line :start 2 :end p1 :radix 16)
(subseq line (1+ p2)))
(values (parse-integer line :end p1 :radix 16)
(subseq line (1+ p2))))
;; KLUDGE CLH 2010-05-31: on darwin, nm gives us
;; _function but dlsym expects us to look up
;; function, without the leading _ . Therefore, we
;; strip it off here.
#!+darwin
(when (equal (char name 0) #\_)
(setf name (subseq name 1)))
(multiple-value-bind (old-value found)
(gethash name *cold-foreign-symbol-table*)
(when (and found
(not (= old-value value)))
(warn "redefining ~S from #X~X to #X~X"
name old-value value)))
(/show "adding to *cold-foreign-symbol-table*:" name value)
(setf (gethash name *cold-foreign-symbol-table*) value)
#!+win32
(let ((at-position (position #\@ name)))
(when at-position
(let ((name (subseq name 0 at-position)))
(multiple-value-bind (old-value found)
(gethash name *cold-foreign-symbol-table*)
(when (and found
(not (= old-value value)))
(warn "redefining ~S from #X~X to #X~X"
name old-value value)))
(setf (gethash name *cold-foreign-symbol-table*)
value)))))))))
(values)) ;; PROGN
(defun cold-foreign-symbol-address (name)
(or (find-foreign-symbol-in-table name *cold-foreign-symbol-table*)
*foreign-symbol-placeholder-value*
(progn
(format *error-output* "~&The foreign symbol table is:~%")
(maphash (lambda (k v)
(format *error-output* "~&~S = #X~8X~%" k v))
*cold-foreign-symbol-table*)
(error "The foreign symbol ~S is undefined." name))))
(defvar *cold-assembler-routines*)
(defvar *cold-assembler-fixups*)
(defun record-cold-assembler-routine (name address)
(/xhow "in RECORD-COLD-ASSEMBLER-ROUTINE" name address)
(push (cons name address)
*cold-assembler-routines*))
(defun record-cold-assembler-fixup (routine
code-object
offset
&optional
(kind :both))
(push (list routine code-object offset kind)
*cold-assembler-fixups*))
(defun lookup-assembler-reference (symbol)
(let ((value (cdr (assoc symbol *cold-assembler-routines*))))
;; FIXME: Should this be ERROR instead of WARN?
(unless value
(warn "Assembler routine ~S not defined." symbol))
value))
;;; The x86 port needs to store code fixups along with code objects if
;;; they are to be moved, so fixups for code objects in the dynamic
;;; heap need to be noted.
#!+x86
(defvar *load-time-code-fixups*)
#!+x86
(defun note-load-time-code-fixup (code-object offset)
;; If CODE-OBJECT might be moved
(when (= (gspace-identifier (descriptor-intuit-gspace code-object))
dynamic-core-space-id)
(push offset (gethash (descriptor-bits code-object)
*load-time-code-fixups*
nil)))
(values))
#!+x86
(defun output-load-time-code-fixups ()
(let ((fixup-infos nil))
(maphash
(lambda (code-object-address fixup-offsets)
(push (cons code-object-address fixup-offsets) fixup-infos))
*load-time-code-fixups*)
(setq fixup-infos (sort fixup-infos #'< :key #'car))
(dolist (fixup-info fixup-infos)
(let ((code-object-address (car fixup-info))
(fixup-offsets (cdr fixup-info)))
(let ((fixup-vector
(allocate-vector-object
*dynamic* sb!vm:n-word-bits (length fixup-offsets)
sb!vm:simple-array-unsigned-byte-32-widetag)))
(do ((index sb!vm:vector-data-offset (1+ index))
(fixups fixup-offsets (cdr fixups)))
((null fixups))
(write-wordindexed fixup-vector index
(make-random-descriptor (car fixups))))
;; KLUDGE: The fixup vector is stored as the first constant,
;; not as a separately-named slot.
(write-wordindexed (make-random-descriptor code-object-address)
sb!vm:code-constants-offset
fixup-vector))))))
;;; Given a pointer to a code object and an offset relative to the
;;; tail of the code object's header, return an offset relative to the
;;; (beginning of the) code object.
;;;
;;; FIXME: It might be clearer to reexpress
;;; (LET ((X (CALC-OFFSET CODE-OBJECT OFFSET0))) ..)
;;; as
;;; (LET ((X (+ OFFSET0 (CODE-OBJECT-HEADER-N-BYTES CODE-OBJECT)))) ..).
(declaim (ftype (function (descriptor sb!vm:word)) calc-offset))
(defun calc-offset (code-object offset-from-tail-of-header)
(let* ((header (read-memory code-object))
(header-n-words (ash (descriptor-bits header)
(- sb!vm:n-widetag-bits)))
(header-n-bytes (ash header-n-words sb!vm:word-shift))
(result (+ offset-from-tail-of-header header-n-bytes)))
result))
(declaim (ftype (function (descriptor sb!vm:word sb!vm:word keyword))
do-cold-fixup))
(defun do-cold-fixup (code-object after-header value kind)
(let* ((offset-within-code-object (calc-offset code-object after-header))
(gspace-bytes (descriptor-bytes code-object))
(gspace-byte-offset (+ (descriptor-byte-offset code-object)
offset-within-code-object))
(gspace-byte-address (gspace-byte-address
(descriptor-gspace code-object))))
(ecase +backend-fasl-file-implementation+
;; See CMU CL source for other formerly-supported architectures
;; (and note that you have to rewrite them to use BVREF-X
;; instead of SAP-REF).
(:alpha
(ecase kind
(:jmp-hint
(assert (zerop (ldb (byte 2 0) value))))
(:bits-63-48
(let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
(value (if (logbitp 31 value) (+ value (ash 1 32)) value))
(value (if (logbitp 47 value) (+ value (ash 1 48)) value)))
(setf (bvref-8 gspace-bytes gspace-byte-offset)
(ldb (byte 8 48) value)
(bvref-8 gspace-bytes (1+ gspace-byte-offset))
(ldb (byte 8 56) value))))
(:bits-47-32
(let* ((value (if (logbitp 15 value) (+ value (ash 1 16)) value))
(value (if (logbitp 31 value) (+ value (ash 1 32)) value)))
(setf (bvref-8 gspace-bytes gspace-byte-offset)
(ldb (byte 8 32) value)
(bvref-8 gspace-bytes (1+ gspace-byte-offset))
(ldb (byte 8 40) value))))
(:ldah
(let ((value (if (logbitp 15 value) (+ value (ash 1 16)) value)))
(setf (bvref-8 gspace-bytes gspace-byte-offset)
(ldb (byte 8 16) value)
(bvref-8 gspace-bytes (1+ gspace-byte-offset))
(ldb (byte 8 24) value))))
(:lda
(setf (bvref-8 gspace-bytes gspace-byte-offset)
(ldb (byte 8 0) value)
(bvref-8 gspace-bytes (1+ gspace-byte-offset))
(ldb (byte 8 8) value)))))
(:hppa
(ecase kind
(:load
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (mask-field (byte 18 14)
(bvref-32 gspace-bytes gspace-byte-offset))
(if (< value 0)
(1+ (ash (ldb (byte 13 0) value) 1))
(ash (ldb (byte 13 0) value) 1)))))
(:load11u
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (mask-field (byte 18 14)
(bvref-32 gspace-bytes gspace-byte-offset))
(if (< value 0)
(1+ (ash (ldb (byte 10 0) value) 1))
(ash (ldb (byte 11 0) value) 1)))))
(:load-short
(let ((low-bits (ldb (byte 11 0) value)))
(assert (<= 0 low-bits (1- (ash 1 4)))))
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (ash (dpb (ldb (byte 4 0) value)
(byte 4 1)
(ldb (byte 1 4) value)) 17)
(logand (bvref-32 gspace-bytes gspace-byte-offset)
#xffe0ffff))))
(:hi
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (mask-field (byte 11 21)
(bvref-32 gspace-bytes gspace-byte-offset))
(ash (ldb (byte 5 13) value) 16)
(ash (ldb (byte 2 18) value) 14)
(ash (ldb (byte 2 11) value) 12)
(ash (ldb (byte 11 20) value) 1)
(ldb (byte 1 31) value))))
(:branch
(let ((bits (ldb (byte 9 2) value)))
(assert (zerop (ldb (byte 2 0) value)))
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (ash bits 3)
(mask-field (byte 1 1) (bvref-32 gspace-bytes gspace-byte-offset))
(mask-field (byte 3 13) (bvref-32 gspace-bytes gspace-byte-offset))
(mask-field (byte 11 21) (bvref-32 gspace-bytes gspace-byte-offset))))))))
(:mips
(ecase kind
(:jump
(assert (zerop (ash value -28)))
(setf (ldb (byte 26 0)
(bvref-32 gspace-bytes gspace-byte-offset))
(ash value -2)))
(:lui
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (mask-field (byte 16 16)
(bvref-32 gspace-bytes gspace-byte-offset))
(ash (1+ (ldb (byte 17 15) value)) -1))))
(:addi
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(logior (mask-field (byte 16 16)
(bvref-32 gspace-bytes gspace-byte-offset))
(ldb (byte 16 0) value))))))
;; FIXME: PowerPC Fixups are not fully implemented. The bit
;; here starts to set things up to work properly, but there
;; needs to be corresponding code in ppc-vm.lisp
(:ppc
(ecase kind
(:ba
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(dpb (ash value -2) (byte 24 2)
(bvref-32 gspace-bytes gspace-byte-offset))))
(:ha
(let* ((un-fixed-up (bvref-16 gspace-bytes
(+ gspace-byte-offset 2)))
(fixed-up (+ un-fixed-up value))
(h (ldb (byte 16 16) fixed-up))
(l (ldb (byte 16 0) fixed-up)))
(setf (bvref-16 gspace-bytes (+ gspace-byte-offset 2))
(if (logbitp 15 l) (ldb (byte 16 0) (1+ h)) h))))
(:l
(let* ((un-fixed-up (bvref-16 gspace-bytes
(+ gspace-byte-offset 2)))
(fixed-up (+ un-fixed-up value)))
(setf (bvref-16 gspace-bytes (+ gspace-byte-offset 2))
(ldb (byte 16 0) fixed-up))))))
(:sparc
(ecase kind
(:call
(error "can't deal with call fixups yet"))
(:sethi
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(dpb (ldb (byte 22 10) value)
(byte 22 0)
(bvref-32 gspace-bytes gspace-byte-offset))))
(:add
(setf (bvref-32 gspace-bytes gspace-byte-offset)
(dpb (ldb (byte 10 0) value)
(byte 10 0)
(bvref-32 gspace-bytes gspace-byte-offset))))))
((:x86 :x86-64)
;; XXX: Note that un-fixed-up is read via bvref-word, which is
;; 64 bits wide on x86-64, but the fixed-up value is written
;; via bvref-32. This would make more sense if we supported
;; :absolute64 fixups, but apparently the cross-compiler
;; doesn't dump them.
(let* ((un-fixed-up (bvref-word gspace-bytes
gspace-byte-offset))
(code-object-start-addr (logandc2 (descriptor-bits code-object)
sb!vm:lowtag-mask)))
(assert (= code-object-start-addr
(+ gspace-byte-address
(descriptor-byte-offset code-object))))
(ecase kind
(:absolute
(let ((fixed-up (+ value un-fixed-up)))
(setf (bvref-32 gspace-bytes gspace-byte-offset)
fixed-up)
;; comment from CMU CL sources:
;;
;; Note absolute fixups that point within the object.
;; KLUDGE: There seems to be an implicit assumption in
;; the old CMU CL code here, that if it doesn't point
;; before the object, it must point within the object
;; (not beyond it). It would be good to add an
;; explanation of why that's true, or an assertion that
;; it's really true, or both.
;;
;; One possible explanation is that all absolute fixups
;; point either within the code object, within the
;; runtime, within read-only or static-space, or within
;; the linkage-table space. In all x86 configurations,
;; these areas are prior to the start of dynamic space,
;; where all the code-objects are loaded.
#!+x86
(unless (< fixed-up code-object-start-addr)
(note-load-time-code-fixup code-object
after-header))))
(:relative ; (used for arguments to X86 relative CALL instruction)
(let ((fixed-up (- (+ value un-fixed-up)
gspace-byte-address
gspace-byte-offset
4))) ; "length of CALL argument"
(setf (bvref-32 gspace-bytes gspace-byte-offset)
fixed-up)
;; Note relative fixups that point outside the code
;; object, which is to say all relative fixups, since
;; relative addressing within a code object never needs
;; a fixup.
#!+x86
(note-load-time-code-fixup code-object
after-header))))))))
(values))
(defun resolve-assembler-fixups ()
(dolist (fixup *cold-assembler-fixups*)
(let* ((routine (car fixup))
(value (lookup-assembler-reference routine)))
(when value
(do-cold-fixup (second fixup) (third fixup) value (fourth fixup))))))
#!+sb-dynamic-core
(progn
(defparameter *dyncore-address* sb!vm::linkage-table-space-start)
(defparameter *dyncore-linkage-keys* nil)
(defparameter *dyncore-table* (make-hash-table :test 'equal))
(defun dyncore-note-symbol (symbol-name datap)
"Register a symbol and return its address in proto-linkage-table."
(let ((key (cons symbol-name datap)))
(symbol-macrolet ((entry (gethash key *dyncore-table*)))
(or entry
(setf entry
(prog1 *dyncore-address*
(push key *dyncore-linkage-keys*)
(incf *dyncore-address* sb!vm::linkage-table-entry-size))))))))
;;; *COLD-FOREIGN-SYMBOL-TABLE* becomes *!INITIAL-FOREIGN-SYMBOLS* in
;;; the core. When the core is loaded, !LOADER-COLD-INIT uses this to
;;; create *STATIC-FOREIGN-SYMBOLS*, which the code in
;;; target-load.lisp refers to.
(defun foreign-symbols-to-core ()
(let ((symbols nil)
(result *nil-descriptor*))
#!-sb-dynamic-core
(progn
(maphash (lambda (symbol value)
(push (cons symbol value) symbols))
*cold-foreign-symbol-table*)
(setq symbols (sort symbols #'string< :key #'car))
(dolist (symbol symbols)
(cold-push (cold-cons (base-string-to-core (car symbol))
(number-to-core (cdr symbol)))
result)))
(cold-set (cold-intern '*!initial-foreign-symbols*) result)
#!+sb-dynamic-core
(let ((runtime-linking-list *nil-descriptor*))
(dolist (symbol *dyncore-linkage-keys*)
(cold-push (cold-cons (base-string-to-core (car symbol))
(cdr symbol))
runtime-linking-list))
(cold-set (cold-intern 'sb!vm::*required-runtime-c-symbols*)
runtime-linking-list)))
(let ((result *nil-descriptor*))
(dolist (rtn (sort (copy-list *cold-assembler-routines*) #'string< :key #'car))
(cold-push (cold-cons (cold-intern (car rtn))
(number-to-core (cdr rtn)))
result))
(cold-set (cold-intern '*!initial-assembler-routines*) result)))
;;;; general machinery for cold-loading FASL files
;;; FOP functions for cold loading
(defvar *cold-fop-funs*
;; We start out with a copy of the ordinary *FOP-FUNS*. The ones
;; which aren't appropriate for cold load will be destructively
;; modified.
(copy-seq *fop-funs*))
;;; Cause a fop to have a special definition for cold load.
;;;
;;; This is similar to DEFINE-FOP, but unlike DEFINE-FOP, this version
;;; (1) looks up the code for this name (created by a previous
;; DEFINE-FOP) instead of creating a code, and
;;; (2) stores its definition in the *COLD-FOP-FUNS* vector,
;;; instead of storing in the *FOP-FUNS* vector.
(defmacro define-cold-fop ((name &key (pushp t) (stackp t)) &rest forms)
(aver (member pushp '(nil t)))
(aver (member stackp '(nil t)))
(let ((code (get name 'fop-code))
(fname (symbolicate "COLD-" name)))
(unless code
(error "~S is not a defined FOP." name))
`(progn
(defun ,fname ()
,@(if stackp
`((with-fop-stack ,pushp ,@forms))
forms))
(setf (svref *cold-fop-funs* ,code) #',fname))))
(defmacro clone-cold-fop ((name &key (pushp t) (stackp t))
(small-name)
&rest forms)
(aver (member pushp '(nil t)))
(aver (member stackp '(nil t)))
`(progn
(macrolet ((clone-arg () '(read-word-arg)))
(define-cold-fop (,name :pushp ,pushp :stackp ,stackp) ,@forms))
(macrolet ((clone-arg () '(read-byte-arg)))
(define-cold-fop (,small-name :pushp ,pushp :stackp ,stackp) ,@forms))))
;;; Cause a fop to be undefined in cold load.
(defmacro not-cold-fop (name)
`(define-cold-fop (,name)
(error "The fop ~S is not supported in cold load." ',name)))
;;; COLD-LOAD loads stuff into the core image being built by calling
;;; LOAD-AS-FASL with the fop function table rebound to a table of cold
;;; loading functions.
(defun cold-load (filename)
#!+sb-doc
"Load the file named by FILENAME into the cold load image being built."
(let* ((*fop-funs* *cold-fop-funs*)
(*cold-load-filename* (etypecase filename
(string filename)
(pathname (namestring filename)))))
(with-open-file (s filename :element-type '(unsigned-byte 8))
(load-as-fasl s nil nil))))
;;;; miscellaneous cold fops
(define-cold-fop (fop-misc-trap) *unbound-marker*)
(define-cold-fop (fop-short-character)
(make-character-descriptor (read-byte-arg)))
(define-cold-fop (fop-empty-list) nil)
(define-cold-fop (fop-truth) t)
(clone-cold-fop (fop-struct)
(fop-small-struct)
(let* ((size (clone-arg))
(result (allocate-boxed-object *dynamic*
(1+ size)
sb!vm:instance-pointer-lowtag))
(layout (pop-stack))
(nuntagged
(descriptor-fixnum
(read-wordindexed
layout
(+ sb!vm:instance-slots-offset
(target-layout-index 'n-untagged-slots)))))
(ntagged (- size nuntagged)))
;; An instance's header word should always indicate that it has an *odd*
;; number of words after the header so that the total with header is even.
(write-memory result (make-other-immediate-descriptor
(logior size 1)
sb!vm:instance-header-widetag))
(write-wordindexed result sb!vm:instance-slots-offset layout)
(do ((index 1 (1+ index)))
((eql index size))
(declare (fixnum index))
(write-wordindexed result
(+ index sb!vm:instance-slots-offset)
(if (>= index ntagged)
(descriptor-word-sized-integer (pop-stack))
(pop-stack))))
result))
(define-cold-fop (fop-layout)
(let* ((nuntagged-des (pop-stack))
(length-des (pop-stack))
(depthoid-des (pop-stack))
(cold-inherits (pop-stack))
(name (pop-stack))
(old (gethash name *cold-layouts*)))
(declare (type descriptor length-des depthoid-des cold-inherits))
(declare (type symbol name))
;; If a layout of this name has been defined already
(if old
;; Enforce consistency between the previous definition and the
;; current definition, then return the previous definition.
(destructuring-bind
;; FIXME: This would be more maintainable if we used
;; DEFSTRUCT (:TYPE LIST) to define COLD-LAYOUT. -- WHN 19990825
(old-layout-descriptor
old-name
old-length
old-inherits-list
old-depthoid
old-nuntagged)
old
(declare (type descriptor old-layout-descriptor))
(declare (type index old-length old-nuntagged))
(declare (type fixnum old-depthoid))
(declare (type list old-inherits-list))
(aver (eq name old-name))
(let ((length (descriptor-fixnum length-des))
(inherits-list (listify-cold-inherits cold-inherits))
(depthoid (descriptor-fixnum depthoid-des))
(nuntagged (descriptor-fixnum nuntagged-des)))
(unless (= length old-length)
(error "cold loading a reference to class ~S when the compile~%~
time length was ~S and current length is ~S"
name
length
old-length))
(unless (equal inherits-list old-inherits-list)
(error "cold loading a reference to class ~S when the compile~%~
time inherits were ~S~%~
and current inherits are ~S"
name
inherits-list
old-inherits-list))
(unless (= depthoid old-depthoid)
(error "cold loading a reference to class ~S when the compile~%~
time inheritance depthoid was ~S and current inheritance~%~
depthoid is ~S"
name
depthoid
old-depthoid))
(unless (= nuntagged old-nuntagged)
(error "cold loading a reference to class ~S when the compile~%~
time number of untagged slots was ~S and is currently ~S"
name
nuntagged
old-nuntagged)))
old-layout-descriptor)
;; Make a new definition from scratch.
(make-cold-layout name length-des cold-inherits depthoid-des
nuntagged-des))))
;;;; cold fops for loading symbols
;;; Load a symbol SIZE characters long from *FASL-INPUT-STREAM* and
;;; intern that symbol in PACKAGE.
(defun cold-load-symbol (size package)
(let ((string (make-string size)))
(read-string-as-bytes *fasl-input-stream* string)
(intern string package)))
(macrolet ((frob (name pname-len package-len)
`(define-cold-fop (,name)
(let ((index (read-arg ,package-len)))
(push-fop-table
(cold-load-symbol (read-arg ,pname-len)
(ref-fop-table index)))))))
(frob fop-symbol-in-package-save #.sb!vm:n-word-bytes #.sb!vm:n-word-bytes)
(frob fop-small-symbol-in-package-save 1 #.sb!vm:n-word-bytes)
(frob fop-symbol-in-byte-package-save #.sb!vm:n-word-bytes 1)
(frob fop-small-symbol-in-byte-package-save 1 1))
(clone-cold-fop (fop-lisp-symbol-save)
(fop-lisp-small-symbol-save)
(push-fop-table (cold-load-symbol (clone-arg) *cl-package*)))
(clone-cold-fop (fop-keyword-symbol-save)
(fop-keyword-small-symbol-save)
(push-fop-table (cold-load-symbol (clone-arg) *keyword-package*)))
(clone-cold-fop (fop-uninterned-symbol-save)
(fop-uninterned-small-symbol-save)
(let* ((size (clone-arg))
(name (make-string size)))
(read-string-as-bytes *fasl-input-stream* name)
(let ((symbol-des (allocate-symbol name)))
(push-fop-table symbol-des))))
;;;; cold fops for loading packages
(clone-cold-fop (fop-named-package-save :stackp nil)
(fop-small-named-package-save)
(let* ((size (clone-arg))
(name (make-string size)))
(read-string-as-bytes *fasl-input-stream* name)
(push-fop-table (find-package name))))
;;;; cold fops for loading lists
;;; Make a list of the top LENGTH things on the fop stack. The last
;;; cdr of the list is set to LAST.
(defmacro cold-stack-list (length last)
`(do* ((index ,length (1- index))
(result ,last (cold-cons (pop-stack) result)))
((= index 0) result)
(declare (fixnum index))))
(define-cold-fop (fop-list)
(cold-stack-list (read-byte-arg) *nil-descriptor*))
(define-cold-fop (fop-list*)
(cold-stack-list (read-byte-arg) (pop-stack)))
(define-cold-fop (fop-list-1)
(cold-stack-list 1 *nil-descriptor*))
(define-cold-fop (fop-list-2)
(cold-stack-list 2 *nil-descriptor*))
(define-cold-fop (fop-list-3)
(cold-stack-list 3 *nil-descriptor*))
(define-cold-fop (fop-list-4)
(cold-stack-list 4 *nil-descriptor*))
(define-cold-fop (fop-list-5)
(cold-stack-list 5 *nil-descriptor*))
(define-cold-fop (fop-list-6)
(cold-stack-list 6 *nil-descriptor*))
(define-cold-fop (fop-list-7)
(cold-stack-list 7 *nil-descriptor*))
(define-cold-fop (fop-list-8)
(cold-stack-list 8 *nil-descriptor*))
(define-cold-fop (fop-list*-1)
(cold-stack-list 1 (pop-stack)))
(define-cold-fop (fop-list*-2)
(cold-stack-list 2 (pop-stack)))
(define-cold-fop (fop-list*-3)
(cold-stack-list 3 (pop-stack)))
(define-cold-fop (fop-list*-4)
(cold-stack-list 4 (pop-stack)))
(define-cold-fop (fop-list*-5)
(cold-stack-list 5 (pop-stack)))
(define-cold-fop (fop-list*-6)
(cold-stack-list 6 (pop-stack)))
(define-cold-fop (fop-list*-7)
(cold-stack-list 7 (pop-stack)))
(define-cold-fop (fop-list*-8)
(cold-stack-list 8 (pop-stack)))
;;;; cold fops for loading vectors
(clone-cold-fop (fop-base-string)
(fop-small-base-string)
(let* ((len (clone-arg))
(string (make-string len)))
(read-string-as-bytes *fasl-input-stream* string)
(base-string-to-core string)))
#!+sb-unicode
(clone-cold-fop (fop-character-string)
(fop-small-character-string)
(bug "CHARACTER-STRING dumped by cross-compiler."))
(clone-cold-fop (fop-vector)
(fop-small-vector)
(let* ((size (clone-arg))
(result (allocate-vector-object *dynamic*
sb!vm:n-word-bits
size
sb!vm:simple-vector-widetag)))
(do ((index (1- size) (1- index)))
((minusp index))
(declare (fixnum index))
(write-wordindexed result
(+ index sb!vm:vector-data-offset)
(pop-stack)))
result))
(define-cold-fop (fop-spec-vector)
(let* ((len (read-word-arg))
(type (read-byte-arg))
(sizebits (aref **saetp-bits-per-length** type))
(result (progn (aver (< sizebits 255))
(allocate-vector-object *dynamic* sizebits len type)))
(start (+ (descriptor-byte-offset result)
(ash sb!vm:vector-data-offset sb!vm:word-shift)))
(end (+ start
(ceiling (* len sizebits)
sb!vm:n-byte-bits))))
(read-bigvec-as-sequence-or-die (descriptor-bytes result)
*fasl-input-stream*
:start start
:end end)
result))
(define-cold-fop (fop-array)
(let* ((rank (read-word-arg))
(data-vector (pop-stack))
(result (allocate-boxed-object *dynamic*
(+ sb!vm:array-dimensions-offset rank)
sb!vm:other-pointer-lowtag)))
(write-memory result
(make-other-immediate-descriptor rank
sb!vm:simple-array-widetag))
(write-wordindexed result sb!vm:array-fill-pointer-slot *nil-descriptor*)
(write-wordindexed result sb!vm:array-data-slot data-vector)
(write-wordindexed result sb!vm:array-displacement-slot *nil-descriptor*)
(write-wordindexed result sb!vm:array-displaced-p-slot *nil-descriptor*)
(write-wordindexed result sb!vm:array-displaced-from-slot *nil-descriptor*)
(let ((total-elements 1))
(dotimes (axis rank)
(let ((dim (pop-stack)))
(unless (is-fixnum-lowtag (descriptor-lowtag dim))
(error "non-fixnum dimension? (~S)" dim))
(setf total-elements
(* total-elements
(logior (ash (descriptor-high dim)
(- descriptor-low-bits
sb!vm:n-fixnum-tag-bits))
(ash (descriptor-low dim)
sb!vm:n-fixnum-tag-bits))))
(write-wordindexed result
(+ sb!vm:array-dimensions-offset axis)
dim)))
(write-wordindexed result
sb!vm:array-elements-slot
(make-fixnum-descriptor total-elements)))
result))
;;;; cold fops for loading numbers
(defmacro define-cold-number-fop (fop)
`(define-cold-fop (,fop :stackp nil)
;; Invoke the ordinary warm version of this fop to push the
;; number.
(,fop)
;; Replace the warm fop result with the cold image of the warm
;; fop result.
(with-fop-stack t
(let ((number (pop-stack)))
(number-to-core number)))))
(define-cold-number-fop fop-single-float)
(define-cold-number-fop fop-double-float)
(define-cold-number-fop fop-integer)
(define-cold-number-fop fop-small-integer)
(define-cold-number-fop fop-word-integer)
(define-cold-number-fop fop-byte-integer)
(define-cold-number-fop fop-complex-single-float)
(define-cold-number-fop fop-complex-double-float)
(define-cold-fop (fop-ratio)
(let ((den (pop-stack)))
(number-pair-to-core (pop-stack) den sb!vm:ratio-widetag)))
(define-cold-fop (fop-complex)
(let ((im (pop-stack)))
(number-pair-to-core (pop-stack) im sb!vm:complex-widetag)))
;;;; cold fops for calling (or not calling)
(not-cold-fop fop-eval)
(not-cold-fop fop-eval-for-effect)
(defvar *load-time-value-counter*)
(define-cold-fop (fop-funcall)
(unless (= (read-byte-arg) 0)
(error "You can't FOP-FUNCALL arbitrary stuff in cold load."))
(let ((counter *load-time-value-counter*))
(cold-push (cold-cons
(cold-intern :load-time-value)
(cold-cons
(pop-stack)
(cold-cons
(number-to-core counter)
*nil-descriptor*)))
*current-reversed-cold-toplevels*)
(setf *load-time-value-counter* (1+ counter))
(make-descriptor 0 0 :load-time-value counter)))
(defun finalize-load-time-value-noise ()
(cold-set (cold-intern '*!load-time-values*)
(allocate-vector-object *dynamic*
sb!vm:n-word-bits
*load-time-value-counter*
sb!vm:simple-vector-widetag)))
(define-cold-fop (fop-funcall-for-effect :pushp nil)
(if (= (read-byte-arg) 0)
(cold-push (pop-stack)
*current-reversed-cold-toplevels*)
(error "You can't FOP-FUNCALL arbitrary stuff in cold load.")))
;;;; cold fops for fixing up circularities
(define-cold-fop (fop-rplaca :pushp nil)
(let ((obj (ref-fop-table (read-word-arg)))
(idx (read-word-arg)))
(write-memory (cold-nthcdr idx obj) (pop-stack))))
(define-cold-fop (fop-rplacd :pushp nil)
(let ((obj (ref-fop-table (read-word-arg)))
(idx (read-word-arg)))
(write-wordindexed (cold-nthcdr idx obj) 1 (pop-stack))))
(define-cold-fop (fop-svset :pushp nil)
(let ((obj (ref-fop-table (read-word-arg)))
(idx (read-word-arg)))
(write-wordindexed obj
(+ idx
(ecase (descriptor-lowtag obj)
(#.sb!vm:instance-pointer-lowtag 1)
(#.sb!vm:other-pointer-lowtag 2)))
(pop-stack))))
(define-cold-fop (fop-structset :pushp nil)
(let ((obj (ref-fop-table (read-word-arg)))
(idx (read-word-arg)))
(write-wordindexed obj (1+ idx) (pop-stack))))
;;; In the original CMUCL code, this actually explicitly declared PUSHP
;;; to be T, even though that's what it defaults to in DEFINE-COLD-FOP.
(define-cold-fop (fop-nthcdr)
(cold-nthcdr (read-word-arg) (pop-stack)))
(defun cold-nthcdr (index obj)
(dotimes (i index)
(setq obj (read-wordindexed obj 1)))
obj)
;;;; cold fops for loading code objects and functions
;;; the names of things which have had COLD-FSET used on them already
;;; (used to make sure that we don't try to statically link a name to
;;; more than one definition)
(defparameter *cold-fset-warm-names*
;; This can't be an EQL hash table because names can be conses, e.g.
;; (SETF CAR).
(make-hash-table :test 'equal))
(define-cold-fop (fop-fset :pushp nil)
(let* ((fn (pop-stack))
(cold-name (pop-stack))
(warm-name (warm-fun-name cold-name)))
(if (gethash warm-name *cold-fset-warm-names*)
(error "duplicate COLD-FSET for ~S" warm-name)
(setf (gethash warm-name *cold-fset-warm-names*) t))
(static-fset cold-name fn)))
(define-cold-fop (fop-note-debug-source :pushp nil)
(let ((debug-source (pop-stack)))
(cold-push debug-source *current-debug-sources*)))
(define-cold-fop (fop-fdefinition)
(cold-fdefinition-object (pop-stack)))
#!-(or x86 x86-64)
(define-cold-fop (fop-sanctify-for-execution)
(pop-stack))
;;; Setting this variable shows what code looks like before any
;;; fixups (or function headers) are applied.
#!+sb-show (defvar *show-pre-fixup-code-p* nil)
;;; FIXME: The logic here should be converted into a function
;;; COLD-CODE-FOP-GUTS (NCONST CODE-SIZE) called by DEFINE-COLD-FOP
;;; FOP-CODE and DEFINE-COLD-FOP FOP-SMALL-CODE, so that
;;; variable-capture nastiness like (LET ((NCONST ,NCONST) ..) ..)
;;; doesn't keep me awake at night.
(defmacro define-cold-code-fop (name nconst code-size)
`(define-cold-fop (,name)
(let* ((nconst ,nconst)
(code-size ,code-size)
(raw-header-n-words (+ sb!vm:code-trace-table-offset-slot nconst))
(header-n-words
;; Note: we round the number of constants up to ensure
;; that the code vector will be properly aligned.
(round-up raw-header-n-words 2))
(des (allocate-cold-descriptor *dynamic*
(+ (ash header-n-words
sb!vm:word-shift)
code-size)
sb!vm:other-pointer-lowtag)))
(write-memory des
(make-other-immediate-descriptor
header-n-words sb!vm:code-header-widetag))
(write-wordindexed des
sb!vm:code-code-size-slot
(make-fixnum-descriptor
(ash (+ code-size (1- (ash 1 sb!vm:word-shift)))
(- sb!vm:word-shift))))
(write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
(write-wordindexed des sb!vm:code-debug-info-slot (pop-stack))
(when (oddp raw-header-n-words)
(write-wordindexed des
raw-header-n-words
(make-random-descriptor 0)))
(do ((index (1- raw-header-n-words) (1- index)))
((< index sb!vm:code-trace-table-offset-slot))
(write-wordindexed des index (pop-stack)))
(let* ((start (+ (descriptor-byte-offset des)
(ash header-n-words sb!vm:word-shift)))
(end (+ start code-size)))
(read-bigvec-as-sequence-or-die (descriptor-bytes des)
*fasl-input-stream*
:start start
:end end)
#!+sb-show
(when *show-pre-fixup-code-p*
(format *trace-output*
"~&/raw code from code-fop ~W ~W:~%"
nconst
code-size)
(do ((i start (+ i sb!vm:n-word-bytes)))
((>= i end))
(format *trace-output*
"/#X~8,'0x: #X~8,'0x~%"
(+ i (gspace-byte-address (descriptor-gspace des)))
(bvref-32 (descriptor-bytes des) i)))))
des)))
(define-cold-code-fop fop-code (read-word-arg) (read-word-arg))
(define-cold-code-fop fop-small-code (read-byte-arg) (read-halfword-arg))
(clone-cold-fop (fop-alter-code :pushp nil)
(fop-byte-alter-code)
(let ((slot (clone-arg))
(value (pop-stack))
(code (pop-stack)))
(write-wordindexed code slot value)))
(define-cold-fop (fop-fun-entry)
(let* ((info (pop-stack))
(type (pop-stack))
(arglist (pop-stack))
(name (pop-stack))
(code-object (pop-stack))
(offset (calc-offset code-object (read-word-arg)))
(fn (descriptor-beyond code-object
offset
sb!vm:fun-pointer-lowtag))
(next (read-wordindexed code-object sb!vm:code-entry-points-slot)))
(unless (zerop (logand offset sb!vm:lowtag-mask))
(error "unaligned function entry: ~S at #X~X" name offset))
(write-wordindexed code-object sb!vm:code-entry-points-slot fn)
(write-memory fn
(make-other-immediate-descriptor
(ash offset (- sb!vm:word-shift))
sb!vm:simple-fun-header-widetag))
(write-wordindexed fn
sb!vm:simple-fun-self-slot
;; KLUDGE: Wiring decisions like this in at
;; this level ("if it's an x86") instead of a
;; higher level of abstraction ("if it has such
;; and such relocation peculiarities (which
;; happen to be confined to the x86)") is bad.
;; It would be nice if the code were instead
;; conditional on some more descriptive
;; feature, :STICKY-CODE or
;; :LOAD-GC-INTERACTION or something.
;;
;; FIXME: The X86 definition of the function
;; self slot breaks everything object.tex says
;; about it. (As far as I can tell, the X86
;; definition makes it a pointer to the actual
;; code instead of a pointer back to the object
;; itself.) Ask on the mailing list whether
;; this is documented somewhere, and if not,
;; try to reverse engineer some documentation.
#!-(or x86 x86-64)
;; a pointer back to the function object, as
;; described in CMU CL
;; src/docs/internals/object.tex
fn
#!+(or x86 x86-64)
;; KLUDGE: a pointer to the actual code of the
;; object, as described nowhere that I can find
;; -- WHN 19990907
(make-random-descriptor
(+ (descriptor-bits fn)
(- (ash sb!vm:simple-fun-code-offset
sb!vm:word-shift)
;; FIXME: We should mask out the type
;; bits, not assume we know what they
;; are and subtract them out this way.
sb!vm:fun-pointer-lowtag))))
(write-wordindexed fn sb!vm:simple-fun-next-slot next)
(write-wordindexed fn sb!vm:simple-fun-name-slot name)
(write-wordindexed fn sb!vm:simple-fun-arglist-slot arglist)
(write-wordindexed fn sb!vm:simple-fun-type-slot type)
(write-wordindexed fn sb!vm::simple-fun-info-slot info)
fn))
#!+sb-thread
(define-cold-fop (fop-symbol-tls-fixup)
(let* ((symbol (pop-stack))
(kind (pop-stack))
(code-object (pop-stack)))
(do-cold-fixup code-object (read-word-arg) (ensure-symbol-tls-index symbol)
kind)
code-object))
(define-cold-fop (fop-foreign-fixup)
(let* ((kind (pop-stack))
(code-object (pop-stack))
(len (read-byte-arg))
(sym (make-string len)))
(read-string-as-bytes *fasl-input-stream* sym)
#!+sb-dynamic-core
(let ((offset (read-word-arg))
(value (dyncore-note-symbol sym nil)))
(do-cold-fixup code-object offset value kind))
#!- (and) (format t "Bad non-plt fixup: ~S~S~%" sym code-object)
#!-sb-dynamic-core
(let ((offset (read-word-arg))
(value (cold-foreign-symbol-address sym)))
(do-cold-fixup code-object offset value kind))
code-object))
#!+linkage-table
(define-cold-fop (fop-foreign-dataref-fixup)
(let* ((kind (pop-stack))
(code-object (pop-stack))
(len (read-byte-arg))
(sym (make-string len)))
#!-sb-dynamic-core (declare (ignore code-object))
(read-string-as-bytes *fasl-input-stream* sym)
#!+sb-dynamic-core
(let ((offset (read-word-arg))
(value (dyncore-note-symbol sym t)))
(do-cold-fixup code-object offset value kind)
code-object)
#!-sb-dynamic-core
(progn
(maphash (lambda (k v)
(format *error-output* "~&~S = #X~8X~%" k v))
*cold-foreign-symbol-table*)
(error "shared foreign symbol in cold load: ~S (~S)" sym kind))))
(define-cold-fop (fop-assembler-code)
(let* ((length (read-word-arg))
(header-n-words
;; Note: we round the number of constants up to ensure that
;; the code vector will be properly aligned.
(round-up sb!vm:code-constants-offset 2))
(des (allocate-cold-descriptor *read-only*
(+ (ash header-n-words
sb!vm:word-shift)
length)
sb!vm:other-pointer-lowtag)))
(write-memory des
(make-other-immediate-descriptor
header-n-words sb!vm:code-header-widetag))
(write-wordindexed des
sb!vm:code-code-size-slot
(make-fixnum-descriptor
(ash (+ length (1- (ash 1 sb!vm:word-shift)))
(- sb!vm:word-shift))))
(write-wordindexed des sb!vm:code-entry-points-slot *nil-descriptor*)
(write-wordindexed des sb!vm:code-debug-info-slot *nil-descriptor*)
(let* ((start (+ (descriptor-byte-offset des)
(ash header-n-words sb!vm:word-shift)))
(end (+ start length)))
(read-bigvec-as-sequence-or-die (descriptor-bytes des)
*fasl-input-stream*
:start start
:end end))
des))
(define-cold-fop (fop-assembler-routine)
(let* ((routine (pop-stack))
(des (pop-stack))
(offset (calc-offset des (read-word-arg))))
(record-cold-assembler-routine
routine
(+ (logandc2 (descriptor-bits des) sb!vm:lowtag-mask) offset))
des))
(define-cold-fop (fop-assembler-fixup)
(let* ((routine (pop-stack))
(kind (pop-stack))
(code-object (pop-stack))
(offset (read-word-arg)))
(record-cold-assembler-fixup routine code-object offset kind)
code-object))
(define-cold-fop (fop-code-object-fixup)
(let* ((kind (pop-stack))
(code-object (pop-stack))
(offset (read-word-arg))
(value (descriptor-bits code-object)))
(do-cold-fixup code-object offset value kind)
code-object))
;;;; sanity checking space layouts
(defun check-spaces ()
;;; Co-opt type machinery to check for intersections...
(let (types)
(flet ((check (start end space)
(unless (< start end)
(error "Bogus space: ~A" space))
(let ((type (specifier-type `(integer ,start ,end))))
(dolist (other types)
(unless (eq *empty-type* (type-intersection (cdr other) type))
(error "Space overlap: ~A with ~A" space (car other))))
(push (cons space type) types))))
(check sb!vm:read-only-space-start sb!vm:read-only-space-end :read-only)
(check sb!vm:static-space-start sb!vm:static-space-end :static)
#!+gencgc
(check sb!vm:dynamic-space-start sb!vm:dynamic-space-end :dynamic)
#!-gencgc
(progn
(check sb!vm:dynamic-0-space-start sb!vm:dynamic-0-space-end :dynamic-0)
(check sb!vm:dynamic-1-space-start sb!vm:dynamic-1-space-end :dynamic-1))
#!+linkage-table
(check sb!vm:linkage-table-space-start sb!vm:linkage-table-space-end :linkage-table))))
;;;; emitting C header file
(defun tailwise-equal (string tail)
(and (>= (length string) (length tail))
(string= string tail :start1 (- (length string) (length tail)))))
(defun write-boilerplate ()
(format t "/*~%")
(dolist (line
'("This is a machine-generated file. Please do not edit it by hand."
"(As of sbcl-0.8.14, it came from WRITE-CONFIG-H in genesis.lisp.)"
nil
"This file contains low-level information about the"
"internals of a particular version and configuration"
"of SBCL. It is used by the C compiler to create a runtime"
"support environment, an executable program in the host"
"operating system's native format, which can then be used to"
"load and run 'core' files, which are basically programs"
"in SBCL's own format."))
(format t " *~@[ ~A~]~%" line))
(format t " */~%"))
(defun c-name (string &optional strip)
(delete #\+
(substitute-if #\_ (lambda (c) (member c '(#\- #\/ #\%)))
(remove-if (lambda (c) (position c strip))
string))))
(defun c-symbol-name (symbol &optional strip)
(c-name (symbol-name symbol) strip))
(defun write-makefile-features ()
;; propagating *SHEBANG-FEATURES* into the Makefiles
(dolist (shebang-feature-name (sort (mapcar #'c-symbol-name
sb-cold:*shebang-features*)
#'string<))
(format t "LISP_FEATURE_~A=1~%" shebang-feature-name)))
(defun write-config-h ()
;; propagating *SHEBANG-FEATURES* into C-level #define's
(dolist (shebang-feature-name (sort (mapcar #'c-symbol-name
sb-cold:*shebang-features*)
#'string<))
(format t "#define LISP_FEATURE_~A~%" shebang-feature-name))
(terpri)
;; and miscellaneous constants
(format t "#define SBCL_VERSION_STRING ~S~%"
(sb!xc:lisp-implementation-version))
(format t "#define CORE_MAGIC 0x~X~%" core-magic)
(format t "#ifndef LANGUAGE_ASSEMBLY~2%")
(format t "#define LISPOBJ(x) ((lispobj)x)~2%")
(format t "#else /* LANGUAGE_ASSEMBLY */~2%")
(format t "#define LISPOBJ(thing) thing~2%")
(format t "#endif /* LANGUAGE_ASSEMBLY */~2%")
(terpri))
(defun write-constants-h ()
;; writing entire families of named constants
(let ((constants nil))
(dolist (package-name '( ;; Even in CMU CL, constants from VM
;; were automatically propagated
;; into the runtime.
"SB!VM"
;; In SBCL, we also propagate various
;; magic numbers related to file format,
;; which live here instead of SB!VM.
"SB!FASL"))
(do-external-symbols (symbol (find-package package-name))
(when (constantp symbol)
(let ((name (symbol-name symbol)))
(labels ( ;; shared machinery
(record (string priority suffix)
(push (list string
priority
(symbol-value symbol)
suffix
(documentation symbol 'variable))
constants))
;; machinery for old-style CMU CL Lisp-to-C
;; arbitrary renaming, being phased out in favor of
;; the newer systematic RECORD-WITH-TRANSLATED-NAME
;; renaming
(record-with-munged-name (prefix string priority)
(record (concatenate
'simple-string
prefix
(delete #\- (string-capitalize string)))
priority
""))
(maybe-record-with-munged-name (tail prefix priority)
(when (tailwise-equal name tail)
(record-with-munged-name prefix
(subseq name 0
(- (length name)
(length tail)))
priority)))
;; machinery for new-style SBCL Lisp-to-C naming
(record-with-translated-name (priority large)
(record (c-name name) priority
(if large
#!+(and win32 x86-64) "LLU"
#!-(and win32 x86-64) "LU"
"")))
(maybe-record-with-translated-name (suffixes priority &key large)
(when (some (lambda (suffix)
(tailwise-equal name suffix))
suffixes)
(record-with-translated-name priority large))))
(maybe-record-with-translated-name '("-LOWTAG") 0)
(maybe-record-with-translated-name '("-WIDETAG" "-SHIFT") 1)
(maybe-record-with-munged-name "-FLAG" "flag_" 2)
(maybe-record-with-munged-name "-TRAP" "trap_" 3)
(maybe-record-with-munged-name "-SUBTYPE" "subtype_" 4)
(maybe-record-with-munged-name "-SC-NUMBER" "sc_" 5)
(maybe-record-with-translated-name '("-SIZE" "-INTERRUPTS") 6)
(maybe-record-with-translated-name '("-START" "-END" "-PAGE-BYTES"
"-CARD-BYTES" "-GRANULARITY")
7 :large t)
(maybe-record-with-translated-name '("-CORE-ENTRY-TYPE-CODE") 8)
(maybe-record-with-translated-name '("-CORE-SPACE-ID") 9)
(maybe-record-with-translated-name '("-CORE-SPACE-ID-FLAG") 9)
(maybe-record-with-translated-name '("-GENERATION+") 10))))))
;; KLUDGE: these constants are sort of important, but there's no
;; pleasing way to inform the code above about them. So we fake
;; it for now. nikodemus on #lisp (2004-08-09) suggested simply
;; exporting every numeric constant from SB!VM; that would work,
;; but the C runtime would have to be altered to use Lisp-like names
;; rather than the munged names currently exported. --njf, 2004-08-09
(dolist (c '(sb!vm:n-word-bits sb!vm:n-word-bytes
sb!vm:n-lowtag-bits sb!vm:lowtag-mask
sb!vm:n-widetag-bits sb!vm:widetag-mask
sb!vm:n-fixnum-tag-bits sb!vm:fixnum-tag-mask))
(push (list (c-symbol-name c)
-1 ; invent a new priority
(symbol-value c)
""
nil)
constants))
;; One more symbol that doesn't fit into the code above.
(let ((c 'sb!impl::+magic-hash-vector-value+))
(push (list (c-symbol-name c)
9
(symbol-value c)
#!+(and win32 x86-64) "LLU"
#!-(and win32 x86-64) "LU"
nil)
constants))
(setf constants
(sort constants
(lambda (const1 const2)
(if (= (second const1) (second const2))
(if (= (third const1) (third const2))
(string< (first const1) (first const2))
(< (third const1) (third const2)))
(< (second const1) (second const2))))))
(let ((prev-priority (second (car constants))))
(dolist (const constants)
(destructuring-bind (name priority value suffix doc) const
(unless (= prev-priority priority)
(terpri)
(setf prev-priority priority))
(when (minusp value)
(error "stub: negative values unsupported"))
(format t "#define ~A ~A~A /* 0x~X ~@[ -- ~A ~]*/~%" name value suffix value doc))))
(terpri))
;; writing information about internal errors
(let ((internal-errors sb!c:*backend-internal-errors*))
(dotimes (i (length internal-errors))
(let ((current-error (aref internal-errors i)))
;; FIXME: this UNLESS should go away (see also FIXME in
;; interr.lisp) -- APD, 2002-03-05
(unless (eq nil (car current-error))
(format t "#define ~A ~D~%"
(c-symbol-name (car current-error))
i))))
(format t "#define INTERNAL_ERROR_NAMES \\~%~{~S~#[~:;, \\~%~]~}~%"
(map 'list #'cdr internal-errors)))
(terpri)
;; I'm not really sure why this is in SB!C, since it seems
;; conceptually like something that belongs to SB!VM. In any case,
;; it's needed C-side.
(format t "#define BACKEND_PAGE_BYTES ~DLU~%" sb!c:*backend-page-bytes*)
(terpri)
;; FIXME: The SPARC has a PSEUDO-ATOMIC-TRAP that differs between
;; platforms. If we export this from the SB!VM package, it gets
;; written out as #define trap_PseudoAtomic, which is confusing as
;; the runtime treats trap_ as the prefix for illegal instruction
;; type things. We therefore don't export it, but instead do
#!+sparc
(when (boundp 'sb!vm::pseudo-atomic-trap)
(format t
"#define PSEUDO_ATOMIC_TRAP ~D /* 0x~:*~X */~%"
sb!vm::pseudo-atomic-trap)
(terpri))
;; possibly this is another candidate for a rename (to
;; pseudo-atomic-trap-number or pseudo-atomic-magic-constant
;; [possibly applicable to other platforms])
#!+sb-safepoint
(format t "#define GC_SAFEPOINT_PAGE_ADDR ((void*)0x~XUL) /* ~:*~A */~%"
sb!vm:gc-safepoint-page-addr)
(dolist (symbol '(sb!vm::float-traps-byte
sb!vm::float-exceptions-byte
sb!vm::float-sticky-bits
sb!vm::float-rounding-mode))
(format t "#define ~A_POSITION ~A /* ~:*0x~X */~%"
(c-symbol-name symbol)
(sb!xc:byte-position (symbol-value symbol)))
(format t "#define ~A_MASK 0x~X /* ~:*~A */~%"
(c-symbol-name symbol)
(sb!xc:mask-field (symbol-value symbol) -1))))
#!+sb-ldb
(defun write-tagnames-h (&optional (out *standard-output*))
(labels
((pretty-name (symbol strip)
(let ((name (string-downcase symbol)))
(substitute #\Space #\-
(subseq name 0 (- (length name) (length strip))))))
(list-sorted-tags (tail)
(loop for symbol being the external-symbols of "SB!VM"
when (and (constantp symbol)
(tailwise-equal (string symbol) tail))
collect symbol into tags
finally (return (sort tags #'< :key #'symbol-value))))
(write-tags (kind limit ash-count)
(format out "~%static const char *~(~A~)_names[] = {~%"
(subseq kind 1))
(let ((tags (list-sorted-tags kind)))
(dotimes (i limit)
(if (eql i (ash (or (symbol-value (first tags)) -1) ash-count))
(format out " \"~A\"" (pretty-name (pop tags) kind))
(format out " \"unknown [~D]\"" i))
(unless (eql i (1- limit))
(write-string "," out))
(terpri out)))
(write-line "};" out)))
(write-tags "-LOWTAG" sb!vm:lowtag-limit 0)
;; this -2 shift depends on every OTHER-IMMEDIATE-?-LOWTAG
;; ending with the same 2 bits. (#b10)
(write-tags "-WIDETAG" (ash (1+ sb!vm:widetag-mask) -2) -2))
(values))
(defun write-primitive-object (obj)
;; writing primitive object layouts
(format t "#ifndef LANGUAGE_ASSEMBLY~2%")
(format t
"struct ~A {~%"
(c-name (string-downcase (string (sb!vm:primitive-object-name obj)))))
(when (sb!vm:primitive-object-widetag obj)
(format t " lispobj header;~%"))
(dolist (slot (sb!vm:primitive-object-slots obj))
(format t " ~A ~A~@[[1]~];~%"
(getf (sb!vm:slot-options slot) :c-type "lispobj")
(c-name (string-downcase (string (sb!vm:slot-name slot))))
(sb!vm:slot-rest-p slot)))
(format t "};~2%")
(format t "#else /* LANGUAGE_ASSEMBLY */~2%")
(format t "/* These offsets are SLOT-OFFSET * N-WORD-BYTES - LOWTAG~%")
(format t " * so they work directly on tagged addresses. */~2%")
(let ((name (sb!vm:primitive-object-name obj))
(lowtag (or (symbol-value (sb!vm:primitive-object-lowtag obj))
0)))
(dolist (slot (sb!vm:primitive-object-slots obj))
(format t "#define ~A_~A_OFFSET ~D~%"
(c-symbol-name name)
(c-symbol-name (sb!vm:slot-name slot))
(- (* (sb!vm:slot-offset slot) sb!vm:n-word-bytes) lowtag)))
(terpri))
(format t "#endif /* LANGUAGE_ASSEMBLY */~2%"))
(defun write-structure-object (dd)
(flet ((cstring (designator)
(c-name (string-downcase (string designator)))))
(format t "#ifndef LANGUAGE_ASSEMBLY~2%")
(format t "struct ~A {~%" (cstring (dd-name dd)))
(format t " lispobj header;~%")
(format t " lispobj layout;~%")
(dolist (slot (dd-slots dd))
(when (eq t (dsd-raw-type slot))
(format t " lispobj ~A;~%" (cstring (dsd-name slot)))))
(unless (oddp (+ (dd-length dd) (dd-raw-length dd)))
(format t " lispobj raw_slot_padding;~%"))
(dotimes (n (dd-raw-length dd))
(format t " lispobj raw~D;~%" (- (dd-raw-length dd) n 1)))
(format t "};~2%")
(format t "#endif /* LANGUAGE_ASSEMBLY */~2%")))
(defun write-static-symbols ()
(dolist (symbol (cons nil sb!vm:*static-symbols*))
;; FIXME: It would be nice to use longer names than NIL and
;; (particularly) T in #define statements.
(format t "#define ~A LISPOBJ(0x~X)~%"
;; FIXME: It would be nice not to need to strip anything
;; that doesn't get stripped always by C-SYMBOL-NAME.
(c-symbol-name symbol "%*.!")
(if *static* ; if we ran GENESIS
;; We actually ran GENESIS, use the real value.
(descriptor-bits (cold-intern symbol))
;; We didn't run GENESIS, so guess at the address.
(+ sb!vm:static-space-start
sb!vm:n-word-bytes
sb!vm:other-pointer-lowtag
(if symbol (sb!vm:static-symbol-offset symbol) 0))))))
;;;; writing map file
;;; Write a map file describing the cold load. Some of this
;;; information is subject to change due to relocating GC, but even so
;;; it can be very handy when attempting to troubleshoot the early
;;; stages of cold load.
(defun write-map ()
(let ((*print-pretty* nil)
(*print-case* :upcase))
(format t "assembler routines defined in core image:~2%")
(dolist (routine (sort (copy-list *cold-assembler-routines*) #'<
:key #'cdr))
(format t "#X~8,'0X: ~S~%" (cdr routine) (car routine)))
(let ((funs nil)
(undefs nil))
(maphash (lambda (name fdefn)
(let ((fun (read-wordindexed fdefn
sb!vm:fdefn-fun-slot)))
(if (= (descriptor-bits fun)
(descriptor-bits *nil-descriptor*))
(push name undefs)
(let ((addr (read-wordindexed
fdefn sb!vm:fdefn-raw-addr-slot)))
(push (cons name (descriptor-bits addr))
funs)))))
*cold-fdefn-objects*)
(format t "~%~|~%initially defined functions:~2%")
(setf funs (sort funs #'< :key #'cdr))
(dolist (info funs)
(format t "0x~8,'0X: ~S #X~8,'0X~%" (cdr info) (car info)
(- (cdr info) #x17)))
(format t
"~%~|
(a note about initially undefined function references: These functions
are referred to by code which is installed by GENESIS, but they are not
installed by GENESIS. This is not necessarily a problem; functions can
be defined later, by cold init toplevel forms, or in files compiled and
loaded at warm init, or elsewhere. As long as they are defined before
they are called, everything should be OK. Things are also OK if the
cross-compiler knew their inline definition and used that everywhere
that they were called before the out-of-line definition is installed,
as is fairly common for structure accessors.)
initially undefined function references:~2%")
(setf undefs (sort undefs #'string< :key #'fun-name-block-name))
(dolist (name undefs)
(format t "~8,'0X: ~S~%"
(descriptor-bits (gethash name *cold-fdefn-objects*))
name)))
(format t "~%~|~%layout names:~2%")
(collect ((stuff))
(maphash (lambda (name gorp)
(declare (ignore name))
(stuff (cons (descriptor-bits (car gorp))
(cdr gorp))))
*cold-layouts*)
(dolist (x (sort (stuff) #'< :key #'car))
(apply #'format t "~8,'0X: ~S[~D]~%~10T~S~%" x))))
(values))
;;;; writing core file
(defvar *core-file*)
(defvar *data-page*)
;;; magic numbers to identify entries in a core file
;;;
;;; (In case you were wondering: No, AFAIK there's no special magic about
;;; these which requires them to be in the 38xx range. They're just
;;; arbitrary words, tested not for being in a particular range but just
;;; for equality. However, if you ever need to look at a .core file and
;;; figure out what's going on, it's slightly convenient that they're
;;; all in an easily recognizable range, and displacing the range away from
;;; zero seems likely to reduce the chance that random garbage will be
;;; misinterpreted as a .core file.)
(defconstant build-id-core-entry-type-code 3860)
(defconstant new-directory-core-entry-type-code 3861)
(defconstant initial-fun-core-entry-type-code 3863)
(defconstant page-table-core-entry-type-code 3880)
(defconstant end-core-entry-type-code 3840)
(declaim (ftype (function (sb!vm:word) sb!vm:word) write-word))
(defun write-word (num)
(ecase sb!c:*backend-byte-order*
(:little-endian
(dotimes (i sb!vm:n-word-bytes)
(write-byte (ldb (byte 8 (* i 8)) num) *core-file*)))
(:big-endian
(dotimes (i sb!vm:n-word-bytes)
(write-byte (ldb (byte 8 (* (- (1- sb!vm:n-word-bytes) i) 8)) num)
*core-file*))))
num)
(defun advance-to-page ()
(force-output *core-file*)
(file-position *core-file*
(round-up (file-position *core-file*)
sb!c:*backend-page-bytes*)))
(defun output-gspace (gspace)
(force-output *core-file*)
(let* ((posn (file-position *core-file*))
(bytes (* (gspace-free-word-index gspace) sb!vm:n-word-bytes))
(pages (ceiling bytes sb!c:*backend-page-bytes*))
(total-bytes (* pages sb!c:*backend-page-bytes*)))
(file-position *core-file*
(* sb!c:*backend-page-bytes* (1+ *data-page*)))
(format t
"writing ~S byte~:P [~S page~:P] from ~S~%"
total-bytes
pages
gspace)
(force-output)
;; Note: It is assumed that the GSPACE allocation routines always
;; allocate whole pages (of size *target-page-size*) and that any
;; empty gspace between the free pointer and the end of page will
;; be zero-filled. This will always be true under Mach on machines
;; where the page size is equal. (RT is 4K, PMAX is 4K, Sun 3 is
;; 8K).
(write-bigvec-as-sequence (gspace-bytes gspace)
*core-file*
:end total-bytes
:pad-with-zeros t)
(force-output *core-file*)
(file-position *core-file* posn)
;; Write part of a (new) directory entry which looks like this:
;; GSPACE IDENTIFIER
;; WORD COUNT
;; DATA PAGE
;; ADDRESS
;; PAGE COUNT
(write-word (gspace-identifier gspace))
(write-word (gspace-free-word-index gspace))
(write-word *data-page*)
(multiple-value-bind (floor rem)
(floor (gspace-byte-address gspace) sb!c:*backend-page-bytes*)
(aver (zerop rem))
(write-word floor))
(write-word pages)
(incf *data-page* pages)))
;;; Create a core file created from the cold loaded image. (This is
;;; the "initial core file" because core files could be created later
;;; by executing SAVE-LISP in a running system, perhaps after we've
;;; added some functionality to the system.)
(declaim (ftype (function (string)) write-initial-core-file))
(defun write-initial-core-file (filename)
(let ((filenamestring (namestring filename))
(*data-page* 0))
(format t
"[building initial core file in ~S: ~%"
filenamestring)
(force-output)
(with-open-file (*core-file* filenamestring
:direction :output
:element-type '(unsigned-byte 8)
:if-exists :rename-and-delete)
;; Write the magic number.
(write-word core-magic)
;; Write the build ID.
(write-word build-id-core-entry-type-code)
(let ((build-id (with-open-file (s "output/build-id.tmp")
(read s))))
(declare (type simple-string build-id))
(/show build-id (length build-id))
;; Write length of build ID record: BUILD-ID-CORE-ENTRY-TYPE-CODE
;; word, this length word, and one word for each char of BUILD-ID.
(write-word (+ 2 (length build-id)))
(dovector (char build-id)
;; (We write each character as a word in order to avoid
;; having to think about word alignment issues in the
;; sbcl-0.7.8 version of coreparse.c.)
(write-word (sb!xc:char-code char))))
;; Write the New Directory entry header.
(write-word new-directory-core-entry-type-code)
(write-word 17) ; length = (5 words/space) * 3 spaces + 2 for header.
(output-gspace *read-only*)
(output-gspace *static*)
(output-gspace *dynamic*)
;; Write the initial function.
(write-word initial-fun-core-entry-type-code)
(write-word 3)
(let* ((cold-name (cold-intern '!cold-init))
(cold-fdefn (cold-fdefinition-object cold-name))
(initial-fun (read-wordindexed cold-fdefn
sb!vm:fdefn-fun-slot)))
(format t
"~&/(DESCRIPTOR-BITS INITIAL-FUN)=#X~X~%"
(descriptor-bits initial-fun))
(write-word (descriptor-bits initial-fun)))
;; Write the End entry.
(write-word end-core-entry-type-code)
(write-word 2)))
(format t "done]~%")
(force-output)
(/show "leaving WRITE-INITIAL-CORE-FILE")
(values))
;;;; the actual GENESIS function
;;; Read the FASL files in OBJECT-FILE-NAMES and produce a Lisp core,
;;; and/or information about a Lisp core, therefrom.
;;;
;;; input file arguments:
;;; SYMBOL-TABLE-FILE-NAME names a UNIX-style .nm file *with* *any*
;;; *tab* *characters* *converted* *to* *spaces*. (We push
;;; responsibility for removing tabs out to the caller it's
;;; trivial to remove them using UNIX command line tools like
;;; sed, whereas it's a headache to do it portably in Lisp because
;;; #\TAB is not a STANDARD-CHAR.) If this file is not supplied,
;;; a core file cannot be built (but a C header file can be).
;;;
;;; output files arguments (any of which may be NIL to suppress output):
;;; CORE-FILE-NAME gets a Lisp core.
;;; C-HEADER-FILE-NAME gets a C header file, traditionally called
;;; internals.h, which is used by the C compiler when constructing
;;; the executable which will load the core.
;;; MAP-FILE-NAME gets (?) a map file. (dunno about this -- WHN 19990815)
;;;
;;; FIXME: GENESIS doesn't belong in SB!VM. Perhaps in %KERNEL for now,
;;; perhaps eventually in SB-LD or SB-BOOT.
(defun sb!vm:genesis (&key
object-file-names
symbol-table-file-name
core-file-name
map-file-name
c-header-dir-name
#+nil (list-objects t))
#!+sb-dynamic-core
(declare (ignorable symbol-table-file-name))
(format t
"~&beginning GENESIS, ~A~%"
(if core-file-name
;; Note: This output summarizing what we're doing is
;; somewhat telegraphic in style, not meant to imply that
;; we're not e.g. also creating a header file when we
;; create a core.
(format nil "creating core ~S" core-file-name)
(format nil "creating headers in ~S" c-header-dir-name)))
(let ((*cold-foreign-symbol-table* (make-hash-table :test 'equal)))
#!-sb-dynamic-core
(when core-file-name
(if symbol-table-file-name
(load-cold-foreign-symbol-table symbol-table-file-name)
(error "can't output a core file without symbol table file input")))
#!+sb-dynamic-core
(progn
(setf (gethash (extern-alien-name "undefined_tramp")
*cold-foreign-symbol-table*)
(dyncore-note-symbol "undefined_tramp" nil))
(dyncore-note-symbol "undefined_alien_function" nil))
;; Now that we've successfully read our only input file (by
;; loading the symbol table, if any), it's a good time to ensure
;; that there'll be someplace for our output files to go when
;; we're done.
(flet ((frob (filename)
(when filename
(ensure-directories-exist filename :verbose t))))
(frob core-file-name)
(frob map-file-name))
;; (This shouldn't matter in normal use, since GENESIS normally
;; only runs once in any given Lisp image, but it could reduce
;; confusion if we ever experiment with running, tweaking, and
;; rerunning genesis interactively.)
(do-all-symbols (sym)
(remprop sym 'cold-intern-info))
(check-spaces)
(let* ((*foreign-symbol-placeholder-value* (if core-file-name nil 0))
(*load-time-value-counter* 0)
(*cold-fdefn-objects* (make-hash-table :test 'equal))
(*cold-symbols* (make-hash-table :test 'equal))
(*cold-package-symbols* nil)
(*read-only* (make-gspace :read-only
read-only-core-space-id
sb!vm:read-only-space-start))
(*static* (make-gspace :static
static-core-space-id
sb!vm:static-space-start))
(*dynamic* (make-gspace :dynamic
dynamic-core-space-id
#!+gencgc sb!vm:dynamic-space-start
#!-gencgc sb!vm:dynamic-0-space-start))
(*nil-descriptor* (make-nil-descriptor))
(*current-reversed-cold-toplevels* *nil-descriptor*)
(*current-debug-sources* *nil-descriptor*)
(*unbound-marker* (make-other-immediate-descriptor
0
sb!vm:unbound-marker-widetag))
*cold-assembler-fixups*
*cold-assembler-routines*
#!+x86 (*load-time-code-fixups* (make-hash-table)))
;; Prepare for cold load.
(initialize-non-nil-symbols)
(initialize-layouts)
(initialize-static-fns)
;; Initialize the *COLD-SYMBOLS* system with the information
;; from package-data-list.lisp-expr and
;; common-lisp-exports.lisp-expr.
;;
;; Why do things this way? Historically, the *COLD-SYMBOLS*
;; machinery was designed and implemented in CMU CL long before
;; I (WHN) ever heard of CMU CL. It dumped symbols and packages
;; iff they were used in the cold image. When I added the
;; package-data-list.lisp-expr mechanism, the idea was to
;; centralize all information about packages and exports. Thus,
;; it was the natural place for information even about packages
;; (such as SB!PCL and SB!WALKER) which aren't used much until
;; after cold load. This didn't quite match the CMU CL approach
;; of filling *COLD-SYMBOLS* with symbols which appear in the
;; cold image and then dumping only those symbols. By explicitly
;; putting all the symbols from package-data-list.lisp-expr and
;; from common-lisp-exports.lisp-expr into *COLD-SYMBOLS* here,
;; we feed our centralized symbol information into the old CMU
;; CL code without having to change the old CMU CL code too
;; much. (And the old CMU CL code is still useful for making
;; sure that the appropriate keywords and internal symbols end
;; up interned in the target Lisp, which is good, e.g. in order
;; to make &KEY arguments work right and in order to make
;; BACKTRACEs into target Lisp system code be legible.)
(dolist (exported-name
(sb-cold:read-from-file "common-lisp-exports.lisp-expr"))
(cold-intern (intern exported-name *cl-package*)))
(dolist (pd (sb-cold:read-from-file "package-data-list.lisp-expr"))
(declare (type sb-cold:package-data pd))
(let ((package (find-package (sb-cold:package-data-name pd))))
(labels (;; Call FN on every node of the TREE.
(mapc-on-tree (fn tree)
(declare (type function fn))
(typecase tree
(cons (mapc-on-tree fn (car tree))
(mapc-on-tree fn (cdr tree)))
(t (funcall fn tree)
(values))))
;; Make sure that information about the association
;; between PACKAGE and the symbol named NAME gets
;; recorded in the cold-intern system or (as a
;; convenience when dealing with the tree structure
;; allowed in the PACKAGE-DATA-EXPORTS slot) do
;; nothing if NAME is NIL.
(chill (name)
(when name
(cold-intern (intern name package) :package package))))
(mapc-on-tree #'chill (sb-cold:package-data-export pd))
(mapc #'chill (sb-cold:package-data-reexport pd))
(dolist (sublist (sb-cold:package-data-import-from pd))
(destructuring-bind (package-name &rest symbol-names) sublist
(declare (ignore package-name))
(mapc #'chill symbol-names))))))
;; Cold load.
(dolist (file-name object-file-names)
(write-line (namestring file-name))
(cold-load file-name))
;; Tidy up loose ends left by cold loading. ("Postpare from cold load?")
(resolve-assembler-fixups)
#!+x86 (output-load-time-code-fixups)
(foreign-symbols-to-core)
(finish-symbols)
(/show "back from FINISH-SYMBOLS")
(finalize-load-time-value-noise)
;; Tell the target Lisp how much stuff we've allocated.
(cold-set 'sb!vm:*read-only-space-free-pointer*
(allocate-cold-descriptor *read-only*
0
sb!vm:even-fixnum-lowtag))
(cold-set 'sb!vm:*static-space-free-pointer*
(allocate-cold-descriptor *static*
0
sb!vm:even-fixnum-lowtag))
(/show "done setting free pointers")
;; Write results to files.
;;
;; FIXME: I dislike this approach of redefining
;; *STANDARD-OUTPUT* instead of putting the new stream in a
;; lexical variable, and it's annoying to have WRITE-MAP (to
;; *STANDARD-OUTPUT*) not be parallel to WRITE-INITIAL-CORE-FILE
;; (to a stream explicitly passed as an argument).
(macrolet ((out-to (name &body body)
`(let ((fn (format nil "~A/~A.h" c-header-dir-name ,name)))
(ensure-directories-exist fn)
(with-open-file (*standard-output* fn
:if-exists :supersede :direction :output)
(write-boilerplate)
(let ((n (c-name (string-upcase ,name))))
(format
t
"#ifndef SBCL_GENESIS_~A~%#define SBCL_GENESIS_~A 1~%"
n n))
,@body
(format t
"#endif /* SBCL_GENESIS_~A */~%"
(string-upcase ,name))))))
(when map-file-name
(with-open-file (*standard-output* map-file-name
:direction :output
:if-exists :supersede)
(write-map)))
(out-to "config" (write-config-h))
(out-to "constants" (write-constants-h))
#!+sb-ldb
(out-to "tagnames" (write-tagnames-h))
(let ((structs (sort (copy-list sb!vm:*primitive-objects*) #'string<
:key (lambda (obj)
(symbol-name
(sb!vm:primitive-object-name obj))))))
(dolist (obj structs)
(out-to
(string-downcase (string (sb!vm:primitive-object-name obj)))
(write-primitive-object obj)))
(out-to "primitive-objects"
(dolist (obj structs)
(format t "~&#include \"~A.h\"~%"
(string-downcase
(string (sb!vm:primitive-object-name obj)))))))
(dolist (class '(hash-table
layout
sb!c::compiled-debug-info
sb!c::compiled-debug-fun
sb!xc:package))
(out-to
(string-downcase (string class))
(write-structure-object
(layout-info (find-layout class)))))
(out-to "static-symbols" (write-static-symbols))
(let ((fn (format nil "~A/Makefile.features" c-header-dir-name)))
(ensure-directories-exist fn)
(with-open-file (*standard-output* fn :if-exists :supersede
:direction :output)
(write-makefile-features)))
(when core-file-name
(write-initial-core-file core-file-name))))))