本来要编译MariaDB的,结果使用Ralink的工具链,在链接uClibc++库的时候,因为没有-fPIC导致链接.a文件有异常。
因此只好自己来编译Ralink的工具链了。目前虚拟机使用的是CentOS 7.3.1611 64bit。
前期准备
由于Ralink的工具链比较早一些,而centos7带的一些可执行程序比较新。主要是make以及texinfo。make可以直接从Ubuntu上拷贝一个3.81版本,或者自己去下个3.81版本的编译。而texinfo则使用4.13版本,编译安装。安装后,先拷贝到自己的一个目录,比如~/bin
1 |
export PATH=~/bin:$PATH |
将新编译的加入PATH,这样编译的时候,优先走自己编译的make以及texinfo。
gcc 4.6.3有个BUG,需要先打上补丁。
1 2 3 4 5 |
tar jxvf buildroot-gcc463-src.tar.bz2 cd buildroot-2012.11.1/dl tar jxvf gcc-4.6.3.tar.bz2 # 解压gcc 4.6.3 vim gcc-4.6.3/gcc/ira-int.h |
补丁如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 |
--- gcc-4.6.3-old/gcc/ira-int.h 2015-07-27 12:51:58.898656272 +0800 +++ gcc-4.6.3/gcc/ira-int.h 2015-07-27 12:53:33.644588455 +0800 @@ -1123,8 +1123,13 @@ ira_allocno_object_iter_cond (ira_allocno_object_iterator *i, ira_allocno_t a, ira_object_t *o) { - *o = ALLOCNO_OBJECT (a, i->n); - return i->n++ < ALLOCNO_NUM_OBJECTS (a); + int n = i->n++; + if (n < ALLOCNO_NUM_OBJECTS (a)) + { + *o = ALLOCNO_OBJECT (a, n); + return true; + } + return false; } /* Loop over all objects associated with allocno A. In each |
重新打包gcc 4.6.3
1 2 3 |
rm gcc-4.6.3.tar.bz2 tar cjvf gcc-4.6.3.tar.bz2 gcc-4.6.3 cd .. |
libstdc++编译开启-fPIC
要支持-fPIC的话,需要gcc的编译选项中添加–width-pic才行,具体make menuconfig如下:
或者直接修改.config文件:
1 |
BR2_EXTRA_GCC_CONFIG_OPTIONS="--with-pic" |
开始编译
1 |
make V=1 |
如果没有修改menuconfig中的gcc输出路径,那么gcc路径默认/opt/buildroot-gcc463 成功后,则安装了新的工具链到该路径下。
支持ucontext
后续编译需要用到ucontext,参考了uClibc-ng以及github上的一个uClibc源码。给现有的工程打上补丁:
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 |
diff -auNr uClibc-0.9.33.2.orig/extra/Configs/Config.arm uClibc-0.9.33.2/extra/Configs/Config.arm --- uClibc-0.9.33.2.orig/extra/Configs/Config.arm 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/extra/Configs/Config.arm 2017-07-12 11:28:08.118231319 +0800 @@ -11,6 +11,7 @@ bool default y select ARCH_ANY_ENDIAN + select ARCH_HAS_UCONTEXT config CONFIG_ARM_EABI bool "Build for EABI" diff -auNr uClibc-0.9.33.2.orig/extra/Configs/Config.i386 uClibc-0.9.33.2/extra/Configs/Config.i386 --- uClibc-0.9.33.2.orig/extra/Configs/Config.i386 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/extra/Configs/Config.i386 2017-07-12 11:28:47.189896934 +0800 @@ -12,6 +12,7 @@ default y select ARCH_LITTLE_ENDIAN select ARCH_HAS_MMU + select ARCH_HAS_UCONTEXT choice prompt "Target x86 Processor Family" diff -auNr uClibc-0.9.33.2.orig/extra/Configs/Config.in uClibc-0.9.33.2/extra/Configs/Config.in --- uClibc-0.9.33.2.orig/extra/Configs/Config.in 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/extra/Configs/Config.in 2017-07-12 11:24:16.654753208 +0800 @@ -261,6 +261,9 @@ bool select ARCH_HAS_NO_SHARED +config ARCH_HAS_UCONTEXT + bool + config HAVE_SHARED bool "Enable shared libraries" depends on !ARCH_HAS_NO_SHARED @@ -270,6 +273,8 @@ answer Y here. If you only want to build uClibc as a static library, then answer N. + + config FORCE_SHAREABLE_TEXT_SEGMENTS bool "Only load shared libraries which can share their text segment" depends on HAVE_SHARED @@ -670,6 +675,19 @@ WARNING! ABI incompatibility. +config UCLIBC_HAS_CONTEXT_FUNCS + bool "Use obsolescent context control functions" + depends on UCLIBC_SUSV3_LEGACY && ARCH_HAS_UCONTEXT + help + Add into library the SuSv3 obsolescent functions used for context + control. The setcontext family allows the implementation in C of + advanced control flow patterns such as iterators, fibers, and + coroutines. They may be viewed as an advanced version of + setjmp/longjmp; whereas the latter allows only a single non-local jump + up the stack, setcontext allows the creation of multiple cooperative + threads of control, each with its own stack. + These functions are: setcontext, getcontext, makecontext, swapcontext. + config UCLIBC_SUSV3_LEGACY_MACROS bool "Enable SuSv3 LEGACY macros" help diff -auNr uClibc-0.9.33.2.orig/extra/Configs/Config.mips uClibc-0.9.33.2/extra/Configs/Config.mips --- uClibc-0.9.33.2.orig/extra/Configs/Config.mips 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/extra/Configs/Config.mips 2017-07-12 11:29:54.720719706 +0800 @@ -11,6 +11,7 @@ bool default y select ARCH_ANY_ENDIAN + select ARCH_HAS_UCONTEXT choice prompt "Target ABI" diff -auNr uClibc-0.9.33.2.orig/extra/Configs/Config.sparc uClibc-0.9.33.2/extra/Configs/Config.sparc --- uClibc-0.9.33.2.orig/extra/Configs/Config.sparc 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/extra/Configs/Config.sparc 2017-07-12 11:30:21.446062749 +0800 @@ -11,6 +11,7 @@ bool default y select ARCH_BIG_ENDIAN + select ARCH_HAS_UCONTEXT choice prompt "Target Processor Type" diff -auNr uClibc-0.9.33.2.orig/extra/Configs/Config.x86_64 uClibc-0.9.33.2/extra/Configs/Config.x86_64 --- uClibc-0.9.33.2.orig/extra/Configs/Config.x86_64 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/extra/Configs/Config.x86_64 2017-07-12 11:30:43.520122217 +0800 @@ -12,3 +12,4 @@ default y select ARCH_LITTLE_ENDIAN select ARCH_HAS_MMU + select ARCH_HAS_UCONTEXT diff -auNr uClibc-0.9.33.2.orig/include/ucontext.h uClibc-0.9.33.2/include/ucontext.h --- uClibc-0.9.33.2.orig/include/ucontext.h 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/include/ucontext.h 2017-07-12 10:55:40.052036939 +0800 @@ -12,21 +12,46 @@ Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* The System V ABI user-level context switching support functions + are marked obsolescent by SuSv3. */ #ifndef _UCONTEXT_H #define _UCONTEXT_H 1 #include <features.h> +#ifdef __UCLIBC_HAS_CONTEXT_FUNCS__ + /* Get machine dependent definition of data structures. */ #include <sys/ucontext.h> -/* The System V ABI user-level context switching support functions - * are marked obsolescent by SuSv3, and are not implemented by - * uClibc. This header is therefore empty. */ +__BEGIN_DECLS + +/* Get user context and store it in variable pointed to by UCP. */ +extern int getcontext (ucontext_t *__ucp) __THROW; + +/* Set user context from information of variable pointed to by UCP. */ +extern int setcontext (const ucontext_t *__ucp) __THROW; + +/* Save current context in context variable pointed to by OUCP and set + context from variable pointed to by UCP. */ +extern int swapcontext (ucontext_t *__restrict __oucp, + const ucontext_t *__restrict __ucp) __THROW; + +/* Manipulate user context UCP to continue with calling functions FUNC + and the ARGC-1 parameters following ARGC when the context is used + the next time in `setcontext' or `swapcontext'. + + We cannot say anything about the parameters FUNC takes; `void' + is as good as any other choice. */ +extern void makecontext (ucontext_t *__ucp, void (*__func) (void), + int __argc, ...) __THROW; + +__END_DECLS +#endif #endif /* ucontext.h */ diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/getcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/arm/getcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/getcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/arm/getcontext.S 2017-07-12 10:01:16.958007325 +0800 @@ -0,0 +1,80 @@ +/* Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + .syntax unified + .text + +/* int getcontext (ucontext_t *ucp) */ + +ENTRY(__getcontext) + /* No need to save r0-r3, d0-d7, or d16-d31. */ + add r1, r0, #MCONTEXT_ARM_R4 + stmia r1, {r4-r11} + + /* Save R13 separately as Thumb can't STM it. */ + str r13, [r0, #MCONTEXT_ARM_SP] + str r14, [r0, #MCONTEXT_ARM_LR] + /* Return to LR */ + str r14, [r0, #MCONTEXT_ARM_PC] + /* Return zero */ + mov r2, #0 + str r2, [r0, #MCONTEXT_ARM_R0] + + /* Save ucontext_t * across the next call. */ + mov r4, r0 + + /* __sigprocmask(SIG_BLOCK, NULL, &(ucontext->uc_sigmask)) */ + mov r0, #SIG_BLOCK + mov r1, #0 + add r2, r4, #UCONTEXT_SIGMASK + bl PLTJMP(sigprocmask) + +#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ +# ifdef __VFP_FP__ + /* Store the VFP registers. */ + /* Following instruction is fstmiax ip!, {d8-d15}. */ + stc p11, cr8, [r0], #64 + /* Store the floating-point status register. */ + /* Following instruction is fmrx r2, fpscr. */ + mrc p10, 7, r1, cr1, cr0, 0 + str r1, [r0], #4 +# endif +#endif +#ifdef __IWMMXT__ + /* Save the call-preserved iWMMXt registers. */ + /* Following instructions are wstrd wr10, [r0], #8 (etc.) */ + stcl p1, cr10, [r0], #8 + stcl p1, cr11, [r0], #8 + stcl p1, cr12, [r0], #8 + stcl p1, cr13, [r0], #8 + stcl p1, cr14, [r0], #8 + stcl p1, cr15, [r0], #8 +#endif + + /* Restore the clobbered R4 and LR. */ + ldr r14, [r4, #MCONTEXT_ARM_LR] + ldr r4, [r4, #MCONTEXT_ARM_R4] + + mov r0, #0 + DO_RET(r14) + +END(__getcontext) +weak_alias(__getcontext, getcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/makecontext.c uClibc-0.9.33.2/libc/sysdeps/linux/arm/makecontext.c --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/makecontext.c 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/arm/makecontext.c 2017-07-12 10:01:47.064074100 +0800 @@ -0,0 +1,73 @@ +/* Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <stdarg.h> +#include <ucontext.h> + +/* Number of arguments that go in registers. */ +#define NREG_ARGS 4 + +/* Take a context previously prepared via getcontext() and set to + call func() with the given int only args. */ +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __startcontext (void); + unsigned long *funcstack; + va_list vl; + unsigned long *regptr; + unsigned int reg; + int misaligned; + + /* Start at the top of stack. */ + funcstack = (unsigned long *) (ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size); + + /* Ensure the stack stays eight byte aligned. */ + misaligned = ((unsigned long) funcstack & 4) != 0; + + if ((argc > NREG_ARGS) && (argc & 1) != 0) + misaligned = !misaligned; + + if (misaligned) + funcstack -= 1; + + va_start (vl, argc); + + /* Reserve space for the on-stack arguments. */ + if (argc > NREG_ARGS) + funcstack -= (argc - NREG_ARGS); + + ucp->uc_mcontext.arm_sp = (unsigned long) funcstack; + ucp->uc_mcontext.arm_pc = (unsigned long) func; + + /* Exit to startcontext() with the next context in R4 */ + ucp->uc_mcontext.arm_r4 = (unsigned long) ucp->uc_link; + ucp->uc_mcontext.arm_lr = (unsigned long) __startcontext; + + /* The first four arguments go into registers. */ + regptr = &(ucp->uc_mcontext.arm_r0); + + for (reg = 0; (reg < argc) && (reg < NREG_ARGS); reg++) + *regptr++ = va_arg (vl, unsigned long); + + /* And the remainder on the stack. */ + for (; reg < argc; reg++) + *funcstack++ = va_arg (vl, unsigned long); + + va_end (vl); +} +weak_alias (__makecontext, makecontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/Makefile.arch uClibc-0.9.33.2/libc/sysdeps/linux/arm/Makefile.arch --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/Makefile.arch 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/arm/Makefile.arch 2017-07-12 10:56:03.365657878 +0800 @@ -20,6 +20,11 @@ CSRC += posix_fadvise.c posix_fadvise64.c endif +ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y) +CSRC += makecontext.c +SSRC += getcontext.S setcontext.S swapcontext.S +endif + # Is our compiler set up for EABI ? IS_EABI:=$(shell $(CC) $(CFLAGS) -x c - -E -dM </dev/null 2>/dev/null \ | grep __ARM_EABI__ 2>&1 >/dev/null && echo 'y' \ diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/setcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/arm/setcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/setcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/arm/setcontext.S 2017-07-12 10:02:10.185332844 +0800 @@ -0,0 +1,76 @@ +/* Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + .syntax unified + .text + +/* int setcontext (const ucontext_t *ucp) */ + +ENTRY(__setcontext) + mov r4, r0 + +#if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__ +# ifdef __VFP_FP__ + /* Following instruction is vldmia r0!, {d8-d15}. */ + ldc p11, cr8, [r0], #64 + /* Restore the floating-point status register. */ + ldr r1, [r0], #4 + /* Following instruction is fmxr fpscr, r1. */ + mcr p10, 7, r1, cr1, cr0, 0 +# endif +#endif + +#ifdef __IWMMXT__ + /* Restore the call-preserved iWMMXt registers. */ + /* Following instructions are wldrd wr10, [r0], #8 (etc.) */ + ldcl p1, cr10, [r0], #8 + ldcl p1, cr11, [r0], #8 + ldcl p1, cr12, [r0], #8 + ldcl p1, cr13, [r0], #8 + ldcl p1, cr14, [r0], #8 + ldcl p1, cr15, [r0], #8 +#endif + + /* Now bring back the signal status. */ + mov r0, #SIG_SETMASK + add r1, r4, #UCONTEXT_SIGMASK + mov r2, #0 + bl PLTJMP(sigprocmask) + + /* Loading r0-r3 makes makecontext easier. */ + add r14, r4, #MCONTEXT_ARM_R0 + ldmia r14, {r0-r11} + ldr r13, [r14, #(MCONTEXT_ARM_SP - MCONTEXT_ARM_R0)] + add r14, r14, #(MCONTEXT_ARM_LR - MCONTEXT_ARM_R0) + ldmia r14, {r14, pc} + +END(setcontext) +weak_alias(__setcontext, setcontext) + + /* Called when a makecontext() context returns. Start the + context in R4 or fall through to exit(). */ +ENTRY(__startcontext) + movs r0, r4 + bne PLTJMP(__setcontext) + + @ New context was 0 - exit + b PLTJMP(_exit) +END(__startcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/swapcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/arm/swapcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/swapcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/arm/swapcontext.S 2017-07-12 10:02:25.158651583 +0800 @@ -0,0 +1,63 @@ +/* Copyright (C) 2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + .syntax unified + .text + +/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */ + +ENTRY(swapcontext) + + /* Have getcontext() do most of the work then fix up + LR afterwards. Save R3 to keep the stack aligned. */ + push {r0,r1,r3,r14} + cfi_adjust_cfa_offset (16) + cfi_rel_offset (r0,0) + cfi_rel_offset (r1,4) + cfi_rel_offset (r3,8) + cfi_rel_offset (r14,12) + + bl __getcontext + mov r4, r0 + + pop {r0,r1,r3,r14} + cfi_adjust_cfa_offset (-16) + cfi_restore (r0) + cfi_restore (r1) + cfi_restore (r3) + cfi_restore (r14) + + /* Exit if getcontext() failed. */ + cmp r4, #0 + itt ne + movne r0, r4 + RETINSTR(ne, r14) + + /* Fix up LR and the PC. */ + str r13,[r0, #MCONTEXT_ARM_SP] + str r14,[r0, #MCONTEXT_ARM_LR] + str r14,[r0, #MCONTEXT_ARM_PC] + + /* And swap using swapcontext(). */ + mov r0, r1 + b __setcontext + +END(swapcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/ucontext_i.sym uClibc-0.9.33.2/libc/sysdeps/linux/arm/ucontext_i.sym --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/arm/ucontext_i.sym 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/arm/ucontext_i.sym 2017-07-12 10:02:42.470266666 +0800 @@ -0,0 +1,30 @@ +#include <inttypes.h> +#include <signal.h> +#include <stddef.h> +#include <sys/ucontext.h> + +SIG_BLOCK +SIG_SETMASK + +-- Offsets of the fields in the ucontext_t structure. +#define ucontext(member) offsetof (ucontext_t, member) +#define mcontext(member) ucontext (uc_mcontext.member) + +UCONTEXT_FLAGS ucontext (uc_flags) +UCONTEXT_LINK ucontext (uc_link) +UCONTEXT_STACK ucontext (uc_stack) +UCONTEXT_MCONTEXT ucontext (uc_mcontext) +UCONTEXT_SIGMASK ucontext (uc_sigmask) + +UCONTEXT_REGSPACE ucontext (uc_regspace) + +MCONTEXT_TRAP_NO mcontext (trap_no) +MCONTEXT_ERROR_CODE mcontext (error_code) +MCONTEXT_OLDMASK mcontext (oldmask) +MCONTEXT_ARM_R0 mcontext (arm_r0) +MCONTEXT_ARM_R4 mcontext (arm_r4) +MCONTEXT_ARM_SP mcontext (arm_sp) +MCONTEXT_ARM_LR mcontext (arm_lr) +MCONTEXT_ARM_PC mcontext (arm_pc) +MCONTEXT_ARM_CPSR mcontext (arm_cpsr) +MCONTEXT_FAULT_ADDRESS mcontext (fault_address) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/getcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/i386/getcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/getcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/i386/getcontext.S 2017-07-12 10:07:20.875898464 +0800 @@ -0,0 +1,84 @@ +/* Save current context. + Copyright (C) 2001-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + +ENTRY(__getcontext) + /* Load address of the context data structure. */ + movl 4(%esp), %eax + + /* Return value of getcontext. EAX is the only register whose + value is not preserved. */ + movl $0, oEAX(%eax) + + /* Save the 32-bit register values and the return address. */ + movl %ecx, oECX(%eax) + movl %edx, oEDX(%eax) + movl %edi, oEDI(%eax) + movl %esi, oESI(%eax) + movl %ebp, oEBP(%eax) + movl (%esp), %ecx + movl %ecx, oEIP(%eax) + leal 4(%esp), %ecx /* Exclude the return address. */ + movl %ecx, oESP(%eax) + movl %ebx, oEBX(%eax) + + /* Save the FS segment register. We don't touch the GS register + since it is used for threads. */ + xorl %edx, %edx + movw %fs, %dx + movl %edx, oFS(%eax) + + /* We have separate floating-point register content memory on the + stack. We use the __fpregs_mem block in the context. Set the + links up correctly. */ + leal oFPREGSMEM(%eax), %ecx + movl %ecx, oFPREGS(%eax) + /* Save the floating-point context. */ + fnstenv (%ecx) + /* And load it right back since the processor changes the mask. + Intel thought this opcode to be used in interrupt handlers which + would block all exceptions. */ + fldenv (%ecx) + + /* Save the current signal mask. */ + pushl %ebx + cfi_adjust_cfa_offset (4) + cfi_rel_offset (ebx, 0) + leal oSIGMASK(%eax), %edx + xorl %ecx, %ecx + movl $SIG_BLOCK, %ebx + movl $__NR_sigprocmask, %eax + ENTER_KERNEL + popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) + cmpl $-4095, %eax /* Check %eax for error. */ + jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + + /* All done, return 0 for success. */ + xorl %eax, %eax +L(pseudo_end): + ret +PSEUDO_END(__getcontext) + +weak_alias (__getcontext, getcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/makecontext.S uClibc-0.9.33.2/libc/sysdeps/linux/i386/makecontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/makecontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/i386/makecontext.S 2017-07-12 10:07:27.001392617 +0800 @@ -0,0 +1,123 @@ +/* Create new context. + Copyright (C) 2001,2002,2005,2007,2008,2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + +ENTRY(__makecontext) + movl 4(%esp), %eax + + /* Load the address of the function we are supposed to run. */ + movl 8(%esp), %ecx + + /* Compute the address of the stack. The information comes from + to us_stack element. */ + movl oSS_SP(%eax), %edx + movl %ecx, oEIP(%eax) + addl oSS_SIZE(%eax), %edx + + /* Remember the number of parameters for the exit handler since + it has to remove them. We store the number in the EBX register + which the function we will call must preserve. */ + movl 12(%esp), %ecx + movl %ecx, oEBX(%eax) + + /* Make room on the new stack for the parameters. + Room for the arguments, return address (== L(exitcode)) and + oLINK pointer is needed. One of the pointer sizes is subtracted + after aligning the stack. */ + negl %ecx + leal -4(%edx,%ecx,4), %edx + negl %ecx + + /* Align the stack. */ + andl $0xfffffff0, %edx + subl $4, %edx + + /* Store the future stack pointer. */ + movl %edx, oESP(%eax) + + /* Put the next context on the new stack (from the uc_link + element). */ + movl oLINK(%eax), %eax + movl %eax, 4(%edx,%ecx,4) + + /* Copy all the parameters. */ + jecxz 2f +1: movl 12(%esp,%ecx,4), %eax + movl %eax, (%edx,%ecx,4) + decl %ecx + jnz 1b +2: + + /* If the function we call returns we must continue with the + context which is given in the uc_link element. To do this + set the return address for the function the user provides + to a little bit of helper code which does the magic (see + below). */ +#ifdef __PIC__ + call 1f + cfi_adjust_cfa_offset (4) +1: popl %ecx + cfi_adjust_cfa_offset (-4) + addl $L(exitcode)-1b, %ecx + movl %ecx, (%edx) +#else + movl $L(exitcode), (%edx) +#endif + /* 'makecontext' returns no value. */ +L(pseudo_end): + ret + + /* This is the helper code which gets called if a function which + is registered with 'makecontext' returns. In this case we + have to install the context listed in the uc_link element of + the context 'makecontext' manipulated at the time of the + 'makecontext' call. If the pointer is NULL the process must + terminate. */ + cfi_endproc +L(exitcode): + /* This removes the parameters passed to the function given to + 'makecontext' from the stack. EBX contains the number of + parameters (see above). */ + leal (%esp,%ebx,4), %esp + +#ifdef __PIC__ + call 1f +1: popl %ebx + addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx +#endif + cmpl $0, (%esp) /* Check the next context. */ + je 2f /* If it is zero exit. */ + + call JUMPTARGET(__setcontext) + /* If this returns (which can happen if the syscall fails) we'll + exit the program with the return error value (-1). */ + + movl %eax, (%esp) +2: call HIDDEN_JUMPTARGET(exit) + /* The 'exit' call should never return. In case it does cause + the process to terminate. */ + hlt + cfi_startproc +END(__makecontext) + +weak_alias (__makecontext, makecontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/Makefile.arch uClibc-0.9.33.2/libc/sysdeps/linux/i386/Makefile.arch --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/Makefile.arch 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/i386/Makefile.arch 2017-07-12 10:56:36.151422861 +0800 @@ -15,3 +15,10 @@ ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y) SSRC += vfork.S clone.S endif + + +ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y) +CSRC += makecontext.c +SSRC += getcontext.S setcontext.S swapcontext.S +endif + diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/setcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/i386/setcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/setcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/i386/setcontext.S 2017-07-12 10:07:37.907760254 +0800 @@ -0,0 +1,96 @@ +/* Install given context. + Copyright (C) 2001-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + +ENTRY(__setcontext) + /* Load address of the context data structure. */ + movl 4(%esp), %eax + + /* Get the current signal mask. Note that we preserve EBX in case + the system call fails and we return from the function with an + error. */ + pushl %ebx + cfi_adjust_cfa_offset (4) + xorl %edx, %edx + leal oSIGMASK(%eax), %ecx + movl $SIG_SETMASK, %ebx + cfi_rel_offset (ebx, 0) + movl $__NR_sigprocmask, %eax + ENTER_KERNEL + popl %ebx + cfi_adjust_cfa_offset (-4) + cfi_restore (ebx) + cmpl $-4095, %eax /* Check %eax for error. */ + jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + + /* EAX was modified, reload it. */ + movl 4(%esp), %eax + + /* Restore the floating-point context. Not the registers, only the + rest. */ + movl oFPREGS(%eax), %ecx + fldenv (%ecx) + + /* Restore the FS segment register. We don't touch the GS register + since it is used for threads. */ + movl oFS(%eax), %ecx + movw %cx, %fs + + /* Fetch the address to return to. */ + movl oEIP(%eax), %ecx + + /* Load the new stack pointer. */ + cfi_def_cfa (eax, 0) + cfi_offset (edi, oEDI) + cfi_offset (esi, oESI) + cfi_offset (ebp, oEBP) + cfi_offset (ebx, oEBX) + cfi_offset (edx, oEDX) + cfi_offset (ecx, oECX) + movl oESP(%eax), %esp + + /* Push the return address on the new stack so we can return there. */ + pushl %ecx + + /* Load the values of all the 32-bit registers (except ESP). + Since we are loading from EAX, it must be last. */ + movl oEDI(%eax), %edi + movl oESI(%eax), %esi + movl oEBP(%eax), %ebp + movl oEBX(%eax), %ebx + movl oEDX(%eax), %edx + movl oECX(%eax), %ecx + movl oEAX(%eax), %eax + + /* End FDE here, we fall into another context. */ + cfi_endproc + cfi_startproc + + /* The following 'ret' will pop the address of the code and jump + to it. */ + +L(pseudo_end): + ret +PSEUDO_END(__setcontext) + +weak_alias (__setcontext, setcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/swapcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/i386/swapcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/swapcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/i386/swapcontext.S 2017-07-12 10:07:45.094110981 +0800 @@ -0,0 +1,110 @@ +/* Save current context and install the given one. + Copyright (C) 2001-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + +ENTRY(__swapcontext) + /* Load address of the context data structure we save in. */ + movl 4(%esp), %eax + + /* Return value of swapcontext. EAX is the only register whose + value is not preserved. */ + movl $0, oEAX(%eax) + + /* Save the 32-bit register values and the return address. */ + movl %ecx, oECX(%eax) + movl %edx, oEDX(%eax) + movl %edi, oEDI(%eax) + movl %esi, oESI(%eax) + movl %ebp, oEBP(%eax) + movl (%esp), %ecx + movl %ecx, oEIP(%eax) + leal 4(%esp), %ecx + movl %ecx, oESP(%eax) + movl %ebx, oEBX(%eax) + + /* Save the FS segment register. */ + xorl %edx, %edx + movw %fs, %dx + movl %edx, oFS(%eax) + + /* We have separate floating-point register content memory on the + stack. We use the __fpregs_mem block in the context. Set the + links up correctly. */ + leal oFPREGSMEM(%eax), %ecx + movl %ecx, oFPREGS(%eax) + /* Save the floating-point context. */ + fnstenv (%ecx) + + /* Load address of the context data structure we have to load. */ + movl 8(%esp), %ecx + + /* Save the current signal mask and install the new one. */ + pushl %ebx + leal oSIGMASK(%eax), %edx + leal oSIGMASK(%ecx), %ecx + movl $SIG_SETMASK, %ebx + movl $__NR_sigprocmask, %eax + ENTER_KERNEL + popl %ebx + cmpl $-4095, %eax /* Check %eax for error. */ + jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + + /* EAX was modified, reload it. */ + movl 8(%esp), %eax + + /* Restore the floating-point context. Not the registers, only the + rest. */ + movl oFPREGS(%eax), %ecx + fldenv (%ecx) + + /* Restore the FS segment register. We don't touch the GS register + since it is used for threads. */ + movl oFS(%eax), %edx + movw %dx, %fs + + /* Fetch the address to return to. */ + movl oEIP(%eax), %ecx + + /* Load the new stack pointer. */ + movl oESP(%eax), %esp + + /* Push the return address on the new stack so we can return there. */ + pushl %ecx + + /* Load the values of all the 32-bit registers (except ESP). + Since we are loading from EAX, it must be last. */ + movl oEDI(%eax), %edi + movl oESI(%eax), %esi + movl oEBP(%eax), %ebp + movl oEBX(%eax), %ebx + movl oEDX(%eax), %edx + movl oECX(%eax), %ecx + movl oEAX(%eax), %eax + + /* The following 'ret' will pop the address of the code and jump + to it. */ +L(pseudo_end): + ret +PSEUDO_END(__swapcontext) + +weak_alias (__swapcontext, swapcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/ucontext_i.sym uClibc-0.9.33.2/libc/sysdeps/linux/i386/ucontext_i.sym --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/i386/ucontext_i.sym 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/i386/ucontext_i.sym 2017-07-12 10:07:50.098586561 +0800 @@ -0,0 +1,30 @@ +#include <stddef.h> +#include <signal.h> +#include <sys/ucontext.h> + +-- + +SIG_BLOCK +SIG_SETMASK + +#define ucontext(member) offsetof (ucontext_t, member) +#define mcontext(member) ucontext (uc_mcontext.member) +#define mreg(reg) mcontext (gregs[REG_##reg]) + +oLINK ucontext (uc_link) +oSS_SP ucontext (uc_stack.ss_sp) +oSS_SIZE ucontext (uc_stack.ss_size) +oGS mreg (GS) +oFS mreg (FS) +oEDI mreg (EDI) +oESI mreg (ESI) +oEBP mreg (EBP) +oESP mreg (ESP) +oEBX mreg (EBX) +oEDX mreg (EDX) +oECX mreg (ECX) +oEAX mreg (EAX) +oEIP mreg (EIP) +oFPREGS mcontext (fpregs) +oSIGMASK ucontext (uc_sigmask) +oFPREGSMEM ucontext (__fpregs_mem) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/Makefile.commonarch uClibc-0.9.33.2/libc/sysdeps/linux/Makefile.commonarch --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/Makefile.commonarch 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/Makefile.commonarch 2017-07-12 11:55:56.768777061 +0800 @@ -39,3 +39,23 @@ $(do_rm) $(ARCH_HEADERS_OUT) endif + +CFLAGS-ucontext_i.c = -S + +$(ARCH_OUT)/ucontext_i.c: $(ARCH_DIR)/ucontext_i.sym + $(do_awk) $(top_srcdir)extra/scripts/gen-as-const.awk $< > $@ + +$(ARCH_OUT)/ucontext_i.s: $(ARCH_OUT)/ucontext_i.c + $(compile.c) + +$(ARCH_OUT)/ucontext_i.h: $(ARCH_OUT)/ucontext_i.s + $(do_sed) $(PTHREAD_GENERATE_MANGLE) $< > $@ + +pregen-headers-$(UCLIBC_HAS_CONTEXT_FUNCS) += $(ARCH_OUT)/ucontext_i.h + +headers_clean-$(UCLIBC_HAS_CONTEXT_FUNCS) += \ + HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT)/ucontext_i) + +HEADERCLEAN_$(subst $(top_builddir),,$(ARCH_OUT)/ucontext_i): + $(do_rm) $(addprefix $(ARCH_OUT)/ucontext_i., c h s) + diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/getcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/mips/getcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/getcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/getcontext.S 2017-07-12 10:08:43.355993078 +0800 @@ -0,0 +1,141 @@ +/* Save current context. + Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maciej W. Rozycki <macro@codesourcery.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> +#include <sys/fpregdef.h> +#include <sys/regdef.h> + +#include "ucontext_i.h" + +/* int getcontext (ucontext_t *ucp) */ + + .text +LOCALSZ = 0 +MASK = 0x00000000 +#ifdef __PIC__ +LOCALSZ = 1 /* save gp */ +# if _MIPS_SIM != _ABIO32 +MASK = 0x10000000 +# endif +#endif +FRAMESZ = ((LOCALSZ * SZREG) + ALSZ) & ALMASK +GPOFF = FRAMESZ - (1 * SZREG) + +NESTED (__getcontext, FRAMESZ, ra) + .mask MASK, 0 + .fmask 0x00000000, 0 + +#ifdef __PIC__ + SETUP_GP + + move a2, sp +# define _SP a2 + +# if _MIPS_SIM != _ABIO32 + move a3, gp +# define _GP a3 +# endif + + PTR_ADDIU sp, -FRAMESZ + SETUP_GP64 (GPOFF, __getcontext) + SAVE_GP (GPOFF) + +#else /* ! __PIC__ */ +# define _SP sp +# define _GP gp + +#endif /* ! __PIC__ */ + + /* Store a magic flag. */ + li v1, 1 + REG_S v1, (0 * SZREG + MCONTEXT_GREGS)(a0) /* zero */ + + REG_S s0, (16 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s1, (17 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s2, (18 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s3, (19 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s4, (20 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s5, (21 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s6, (22 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s7, (23 * SZREG + MCONTEXT_GREGS)(a0) +#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32 + REG_S _GP, (28 * SZREG + MCONTEXT_GREGS)(a0) +#endif + REG_S _SP, (29 * SZREG + MCONTEXT_GREGS)(a0) + REG_S fp, (30 * SZREG + MCONTEXT_GREGS)(a0) + REG_S ra, (31 * SZREG + MCONTEXT_GREGS)(a0) + REG_S ra, MCONTEXT_PC(a0) + +#ifdef __mips_hard_float +# if _MIPS_SIM == _ABI64 + s.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0) + +# else /* _MIPS_SIM != _ABI64 */ + s.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0) + +# endif /* _MIPS_SIM != _ABI64 */ + + cfc1 v1, fcr31 + sw v1, MCONTEXT_FPC_CSR(a0) +#endif /* __mips_hard_float */ + +/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ + li a3, _NSIG8 + PTR_ADDU a2, a0, UCONTEXT_SIGMASK + move a1, zero + li a0, SIG_BLOCK + + li v0, SYS_ify (rt_sigprocmask) + syscall + bnez a3, 99f + +#ifdef __PIC__ + RESTORE_GP64 + PTR_ADDIU sp, FRAMESZ +#endif + move v0, zero + jr ra + +99: +#ifdef __PIC__ + PTR_LA t9, JUMPTARGET (__syscall_error) + RESTORE_GP64 + PTR_ADDIU sp, FRAMESZ + jr t9 + +#else /* ! __PIC__ */ + + j JUMPTARGET (__syscall_error) +#endif /* ! __PIC__ */ +PSEUDO_END (__getcontext) + +weak_alias (__getcontext, getcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/kernel_rt_sigframe.h uClibc-0.9.33.2/libc/sysdeps/linux/mips/kernel_rt_sigframe.h --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/kernel_rt_sigframe.h 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/kernel_rt_sigframe.h 2017-07-12 12:00:34.373278154 +0800 @@ -0,0 +1,10 @@ +/* Linux kernel RT signal frame. */ +typedef struct kernel_rt_sigframe + { + uint32_t rs_ass[4]; + uint32_t rs_code[2]; + siginfo_t rs_info; + struct ucontext rs_uc; + uint32_t rs_altcode[8] __attribute__ ((__aligned__ (1 << 7))); + } +kernel_rt_sigframe_t; diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/makecontext.S uClibc-0.9.33.2/libc/sysdeps/linux/mips/makecontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/makecontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/makecontext.S 2017-07-12 10:08:49.346122734 +0800 @@ -0,0 +1,181 @@ +/* Modify saved context. + Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maciej W. Rozycki <macro@codesourcery.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> +#include <sys/fpregdef.h> +#include <sys/regdef.h> + +#include "ucontext_i.h" + +/* int makecontext (ucontext_t *ucp, (void *func) (), int argc, ...) */ + + .text +LOCALSZ = 0 +ARGSZ = 0 +MASK = 0x00000000 +#ifdef __PIC__ +LOCALSZ = 1 /* save gp */ +#endif +#if _MIPS_SIM != _ABIO32 +ARGSZ = 5 /* save a3-a7 */ +# ifdef __PIC__ +MASK = 0x10000000 +# endif +#endif +FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK +GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG) +#if _MIPS_SIM != _ABIO32 +A3OFF = FRAMESZ - (5 * SZREG) /* callee-allocated */ +A4OFF = FRAMESZ - (4 * SZREG) +A5OFF = FRAMESZ - (3 * SZREG) +A6OFF = FRAMESZ - (2 * SZREG) +A7OFF = FRAMESZ - (1 * SZREG) +NARGREGS = 8 +#else +A3OFF = FRAMESZ + (3 * SZREG) /* caller-allocated */ +NARGREGS = 4 +#endif + +NESTED (__makecontext, FRAMESZ, ra) + .mask MASK, -(ARGSZ * SZREG) + .fmask 0x00000000, 0 + +98: +#ifdef __PIC__ + SETUP_GP +#endif + + PTR_ADDIU sp, -FRAMESZ + +#ifdef __PIC__ + SETUP_GP64 (GPOFF, __makecontext) + SAVE_GP (GPOFF) +#endif + + /* Store args to be passed. */ + REG_S a3, A3OFF(sp) +#if _MIPS_SIM != _ABIO32 + REG_S a4, A4OFF(sp) + REG_S a5, A5OFF(sp) + REG_S a6, A6OFF(sp) + REG_S a7, A7OFF(sp) +#endif + + /* Store a magic flag. */ + li v1, 1 + REG_S v1, (0 * SZREG + MCONTEXT_GREGS)(a0) /* zero */ + + /* Set up the stack. */ + PTR_L t0, STACK_SP(a0) + PTR_L t2, STACK_SIZE(a0) + PTR_ADDIU t1, sp, A3OFF + PTR_ADDU t0, t2 + and t0, ALMASK + blez a2, 2f /* no arguments */ + + /* Store register arguments. */ + PTR_ADDIU t2, a0, MCONTEXT_GREGS + 4 * SZREG + move t3, zero +0: + addiu t3, 1 + REG_L v1, (t1) + PTR_ADDIU t1, SZREG + REG_S v1, (t2) + PTR_ADDIU t2, SZREG + bgeu t3, a2, 2f /* all done */ + bltu t3, NARGREGS, 0b /* next */ + + /* Make room for stack arguments. */ + PTR_SUBU t2, a2, t3 + PTR_SLL t2, 3 + PTR_SUBU t0, t2 + and t0, ALMASK + + /* Store stack arguments. */ + move t2, t0 +1: + addiu t3, 1 + REG_L v1, (t1) + PTR_ADDIU t1, SZREG + REG_S v1, (t2) + PTR_ADDIU t2, SZREG + bltu t3, a2, 1b /* next */ + +2: +#if _MIPS_SIM == _ABIO32 + /* Make room for a0-a3 storage. */ + PTR_ADDIU t0, -(NARGSAVE * SZREG) +#endif + PTR_L v1, UCONTEXT_LINK(a0) +#ifdef __PIC__ + PTR_ADDIU t9, 99f - 98b +#else + PTR_LA t9, 99f +#endif + REG_S t0, (29 * SZREG + MCONTEXT_GREGS)(a0) /* sp */ + REG_S v1, (16 * SZREG + MCONTEXT_GREGS)(a0) /* s0 */ +#ifdef __PIC__ + REG_S gp, (17 * SZREG + MCONTEXT_GREGS)(a0) /* s1 */ +#endif + REG_S t9, (31 * SZREG + MCONTEXT_GREGS)(a0) /* ra */ + REG_S a1, MCONTEXT_PC(a0) + +#ifdef __PIC__ + RESTORE_GP64 + PTR_ADDIU sp, FRAMESZ +#endif + jr ra + +99: +#ifdef __PIC__ + move gp, s1 +#endif + move a0, zero + beqz s0, 0f + + /* setcontext (ucp) */ + move a0, s0 +#ifdef __PIC__ + PTR_LA t9, JUMPTARGET (__setcontext) + jalr t9 +# if _MIPS_SIM == _ABIO32 + move gp, s1 +# endif +#else + jal JUMPTARGET (__setcontext) +#endif + move a0, v0 + +0: + /* exit (a0) */ +#ifdef __PIC__ + PTR_LA t9, HIDDEN_JUMPTARGET (exit) + jalr t9 +#else + jal HIDDEN_JUMPTARGET (exit) +#endif + + /* You don't exist, you won't feel anything. */ +1: + lb zero, (zero) + b 1b +PSEUDO_END (__makecontext) + +weak_alias (__makecontext, makecontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/Makefile.arch uClibc-0.9.33.2/libc/sysdeps/linux/mips/Makefile.arch --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/Makefile.arch 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/Makefile.arch 2017-07-12 15:07:02.852239337 +0800 @@ -20,6 +20,11 @@ SSRC += vfork.S clone.S endif +ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y) +SSRC += makecontext.S setcontext.S getcontext.S \ + swapcontext.S +endif + ASFLAGS-syscall_error.S += -D_LIBC_REENTRANT ARCH_HEADERS := sgidefs.h diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/setcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/mips/setcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/setcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/setcontext.S 2017-07-12 10:08:56.122369171 +0800 @@ -0,0 +1,184 @@ +/* Set current context. + Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maciej W. Rozycki <macro@codesourcery.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> +#include <sys/fpregdef.h> +#include <sys/regdef.h> + +#include "ucontext_i.h" + +/* int setcontext (const ucontext_t *ucp) */ + + .text +LOCALSZ = 0 +ARGSZ = 0 +MASK = 0x00000000 +#ifdef __PIC__ +LOCALSZ = 1 /* save gp */ +#endif +#if _MIPS_SIM != _ABIO32 +ARGSZ = 1 /* save a0 */ +# ifdef __PIC__ +MASK = 0x10000000 +# endif +#endif +FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK +GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG) +#if _MIPS_SIM != _ABIO32 +A0OFF = FRAMESZ - (1 * SZREG) /* callee-allocated */ +#else +A0OFF = FRAMESZ + (0 * SZREG) /* caller-allocated */ +#endif + +NESTED (__setcontext, FRAMESZ, ra) + .mask MASK, -(ARGSZ * SZREG) + .fmask 0x00000000, 0 + +#ifdef __PIC__ + SETUP_GP +#endif + + PTR_ADDIU sp, -FRAMESZ + +#ifdef __PIC__ + SETUP_GP64 (GPOFF, __setcontext) + SAVE_GP (GPOFF) +#endif + + /* Check for the magic flag. */ + li v0, 1 + REG_L v1, (0 * SZREG + MCONTEXT_GREGS)(a0) /* zero */ + bne v0, v1, 98f + + REG_S a0, A0OFF(sp) + +/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */ + li a3, _NSIG8 + move a2, zero + PTR_ADDU a1, a0, UCONTEXT_SIGMASK + li a0, SIG_SETMASK + + li v0, SYS_ify (rt_sigprocmask) + syscall + bnez a3, 99f + + REG_L v0, A0OFF(sp) + +#ifdef __mips_hard_float +# if _MIPS_SIM == _ABI64 + l.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(v0) + +# else /* _MIPS_SIM != _ABI64 */ + l.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(v0) + +# endif /* _MIPS_SIM != _ABI64 */ + + lw v1, MCONTEXT_FPC_CSR(v0) + ctc1 v1, fcr31 +#endif /* __mips_hard_float */ + + /* Note the contents of argument registers will be random + unless makecontext() has been called. */ + REG_L a0, (4 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a1, (5 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a2, (6 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a3, (7 * SZREG + MCONTEXT_GREGS)(v0) +#if _MIPS_SIM != _ABIO32 + REG_L a4, (8 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a5, (9 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a6, (10 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a7, (11 * SZREG + MCONTEXT_GREGS)(v0) +#endif + + REG_L s0, (16 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s1, (17 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s2, (18 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s3, (19 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s4, (20 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s5, (21 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s6, (22 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s7, (23 * SZREG + MCONTEXT_GREGS)(v0) +#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32 + REG_L gp, (28 * SZREG + MCONTEXT_GREGS)(v0) +#endif + REG_L sp, (29 * SZREG + MCONTEXT_GREGS)(v0) + REG_L fp, (30 * SZREG + MCONTEXT_GREGS)(v0) + REG_L ra, (31 * SZREG + MCONTEXT_GREGS)(v0) + REG_L t9, MCONTEXT_PC(v0) + + move v0, zero + jr t9 + +98: + /* This is a context obtained from a signal handler. + Perform a full restore by pushing the context + passed onto a simulated signal frame on the stack + and call the signal return syscall as if a signal + handler exited normally. */ + PTR_ADDIU sp, -((RT_SIGFRAME_SIZE + ALSZ) & ALMASK) + + /* Only ucontext is referred to from rt_sigreturn, + copy it. */ + PTR_ADDIU t1, sp, RT_SIGFRAME_UCONTEXT + li t3, ((UCONTEXT_SIZE + SZREG - 1) / SZREG) - 1 +0: + REG_L t2, (a0) + PTR_ADDIU a0, SZREG + REG_S t2, (t1) + PTR_ADDIU t1, SZREG + .set noreorder + bgtz t3, 0b + addiu t3, -1 + .set reorder + +/* rt_sigreturn () -- no arguments, sp points to struct rt_sigframe. */ + li v0, SYS_ify (rt_sigreturn) + syscall + + /* Restore the stack and fall through to the error + path. Successful rt_sigreturn never returns to + its calling place. */ + PTR_ADDIU sp, ((RT_SIGFRAME_SIZE + ALSZ) & ALMASK) +99: +#ifdef __PIC__ + PTR_LA t9, JUMPTARGET (__syscall_error) + RESTORE_GP64 + PTR_ADDIU sp, FRAMESZ + jr t9 + +#else /* ! __PIC__ */ + + j JUMPTARGET (__syscall_error) +#endif /* ! __PIC__ */ +PSEUDO_END (__setcontext) + +weak_alias (__setcontext, setcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/swapcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/mips/swapcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/swapcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/swapcontext.S 2017-07-12 10:09:03.159317602 +0800 @@ -0,0 +1,204 @@ +/* Save and set current context. + Copyright (C) 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maciej W. Rozycki <macro@codesourcery.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <sys/asm.h> +#include <sys/fpregdef.h> +#include <sys/regdef.h> + +#include "ucontext_i.h" + +/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */ + + .text +LOCALSZ = 0 +ARGSZ = 0 +MASK = 0x00000000 +#ifdef __PIC__ +LOCALSZ = 1 /* save gp */ +#endif +#if _MIPS_SIM != _ABIO32 +ARGSZ = 1 /* save a1 */ +# ifdef __PIC__ +MASK = 0x10000000 +# endif +#endif +FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK +GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG) +#if _MIPS_SIM != _ABIO32 +A1OFF = FRAMESZ - (1 * SZREG) /* callee-allocated */ +#else +A1OFF = FRAMESZ + (1 * SZREG) /* caller-allocated */ +#endif + +NESTED (__swapcontext, FRAMESZ, ra) + .mask MASK, -(ARGSZ * SZREG) + .fmask 0x00000000, 0 + +#ifdef __PIC__ + SETUP_GP + + move a2, sp +# define _SP a2 + +# if _MIPS_SIM != _ABIO32 + move a3, gp +# define _GP a3 +# endif + + PTR_ADDIU sp, -FRAMESZ + SETUP_GP64 (GPOFF, __swapcontext) + SAVE_GP (GPOFF) + +#else /* ! __PIC__ */ +# define _SP sp +# define _GP gp + +#endif /* ! __PIC__ */ + + /* Store a magic flag. */ + li v1, 1 + REG_S v1, (0 * SZREG + MCONTEXT_GREGS)(a0) /* zero */ + + REG_S s0, (16 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s1, (17 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s2, (18 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s3, (19 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s4, (20 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s5, (21 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s6, (22 * SZREG + MCONTEXT_GREGS)(a0) + REG_S s7, (23 * SZREG + MCONTEXT_GREGS)(a0) +#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32 + REG_S _GP, (28 * SZREG + MCONTEXT_GREGS)(a0) +#endif + REG_S _SP, (29 * SZREG + MCONTEXT_GREGS)(a0) + REG_S fp, (30 * SZREG + MCONTEXT_GREGS)(a0) + REG_S ra, (31 * SZREG + MCONTEXT_GREGS)(a0) + REG_S ra, MCONTEXT_PC(a0) + +#ifdef __mips_hard_float +# if _MIPS_SIM == _ABI64 + s.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0) + +# else /* _MIPS_SIM != _ABI64 */ + s.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0) + s.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0) + +# endif /* _MIPS_SIM != _ABI64 */ + + cfc1 v1, fcr31 + sw v1, MCONTEXT_FPC_CSR(a0) +#endif /* __mips_hard_float */ + + REG_S a1, A1OFF(sp) + +/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */ + li a3, _NSIG8 + PTR_ADDU a2, a0, UCONTEXT_SIGMASK + PTR_ADDU a1, a1, UCONTEXT_SIGMASK + li a0, SIG_SETMASK + + li v0, SYS_ify (rt_sigprocmask) + syscall + bnez a3, 99f + + REG_L v0, A1OFF(sp) + +#ifdef __mips_hard_float +# if _MIPS_SIM == _ABI64 + l.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(v0) + +# else /* _MIPS_SIM != _ABI64 */ + l.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0) + l.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(v0) + +# endif /* _MIPS_SIM != _ABI64 */ + + lw v1, MCONTEXT_FPC_CSR(v0) + ctc1 v1, fcr31 +#endif /* __mips_hard_float */ + + /* Note the contents of argument registers will be random + unless makecontext() has been called. */ + REG_L a0, (4 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a1, (5 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a2, (6 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a3, (7 * SZREG + MCONTEXT_GREGS)(v0) +#if _MIPS_SIM != _ABIO32 + REG_L a4, (8 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a5, (9 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a6, (10 * SZREG + MCONTEXT_GREGS)(v0) + REG_L a7, (11 * SZREG + MCONTEXT_GREGS)(v0) +#endif + + REG_L s0, (16 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s1, (17 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s2, (18 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s3, (19 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s4, (20 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s5, (21 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s6, (22 * SZREG + MCONTEXT_GREGS)(v0) + REG_L s7, (23 * SZREG + MCONTEXT_GREGS)(v0) +#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32 + REG_L gp, (28 * SZREG + MCONTEXT_GREGS)(v0) +#endif + REG_L sp, (29 * SZREG + MCONTEXT_GREGS)(v0) + REG_L fp, (30 * SZREG + MCONTEXT_GREGS)(v0) + REG_L ra, (31 * SZREG + MCONTEXT_GREGS)(v0) + REG_L t9, MCONTEXT_PC(v0) + + move v0, zero + jr t9 + +99: +#ifdef __PIC__ + PTR_LA t9, JUMPTARGET (__syscall_error) + RESTORE_GP64 + PTR_ADDIU sp, FRAMESZ + jr t9 + +#else /* ! __PIC__ */ + + j JUMPTARGET (__syscall_error) +#endif /* ! __PIC__ */ +PSEUDO_END (__swapcontext) + +weak_alias (__swapcontext, swapcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/ucontext_i.sym uClibc-0.9.33.2/libc/sysdeps/linux/mips/ucontext_i.sym --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/mips/ucontext_i.sym 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/mips/ucontext_i.sym 2017-07-12 10:09:06.933480311 +0800 @@ -0,0 +1,52 @@ +#include <inttypes.h> +#include <signal.h> +#include <stddef.h> +#include <sys/ucontext.h> + +#include <kernel_rt_sigframe.h> + +-- Constants used by the rt_sigprocmask call. + +SIG_BLOCK +SIG_SETMASK + +_NSIG8 (_NSIG / 8) + +-- Offsets of the fields in the kernel rt_sigframe_t structure. +#define rt_sigframe(member) offsetof (kernel_rt_sigframe_t, member) + +RT_SIGFRAME_UCONTEXT rt_sigframe (rs_uc) + +RT_SIGFRAME_SIZE sizeof (kernel_rt_sigframe_t) + +-- Offsets of the fields in the ucontext_t structure. +#define ucontext(member) offsetof (ucontext_t, member) +#define stack(member) ucontext (uc_stack.member) +#define mcontext(member) ucontext (uc_mcontext.member) + +UCONTEXT_FLAGS ucontext (uc_flags) +UCONTEXT_LINK ucontext (uc_link) +UCONTEXT_STACK ucontext (uc_stack) +UCONTEXT_MCONTEXT ucontext (uc_mcontext) +UCONTEXT_SIGMASK ucontext (uc_sigmask) + +STACK_SP stack (ss_sp) +STACK_SIZE stack (ss_size) +STACK_FLAGS stack (ss_flags) + +MCONTEXT_GREGS mcontext (gregs) +MCONTEXT_FPREGS mcontext (fpregs) +MCONTEXT_MDHI mcontext (mdhi) +MCONTEXT_HI1 mcontext (hi1) +MCONTEXT_HI2 mcontext (hi2) +MCONTEXT_HI3 mcontext (hi3) +MCONTEXT_MDLO mcontext (mdlo) +MCONTEXT_LO1 mcontext (lo1) +MCONTEXT_LO2 mcontext (lo2) +MCONTEXT_LO3 mcontext (lo3) +MCONTEXT_PC mcontext (pc) +MCONTEXT_FPC_CSR mcontext (fpc_csr) +MCONTEXT_USED_MATH mcontext (used_math) +MCONTEXT_DSP mcontext (dsp) + +UCONTEXT_SIZE sizeof (ucontext_t) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/getcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/sparc/getcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/getcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/sparc/getcontext.S 2017-07-12 10:16:48.516671818 +0800 @@ -0,0 +1,84 @@ +/* Save current context. + Copyright (C) 2008-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David S. Miller <davem@davemloft.net>, 2008. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + +/* int __getcontext (ucontext_t *ucp) + + Saves the machine context in UCP such that when it is activated, + it appears as if __getcontext() returned again. + + This implementation is intended to be used for *synchronous* context + switches only. Therefore, it does not have to save anything + other than the PRESERVED state. */ + + +ENTRY(__getcontext) + save %sp, -112, %sp + st %g0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_PSR] + + /* In reality, we only use the GREG_PC value when setting + or swapping contexts. But we fill in NPC for completeness. */ + add %i7, 8, %o0 + st %o0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_PC] + add %o0, 4, %o0 + st %o0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_NPC] + + rd %y, %o1 + st %o1, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_Y] + + st %g1, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G1] + st %g2, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G2] + st %g3, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G3] + st %g4, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G4] + st %g5, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G5] + st %g6, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G6] + st %g7, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G7] + + mov SIG_BLOCK, %o0 + clr %o1 + add %i0, UC_SIGMASK, %o2 + mov 8, %o3 + mov __NR_rt_sigprocmask, %g1 + ta 0x10 + + /* Zero, success, return value. */ + st %g0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O0] + st %i1, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O1] + st %i2, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O2] + st %i3, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O3] + st %i4, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O4] + st %i5, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O5] + st %i6, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O6] + st %i7, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O7] + + st %g0, [%i0 + UC_MCONTEXT + MC_GWINS] + + /* Do not save FPU state, it is volatile across calls. */ + stb %g0, [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_EN] + + st %g0, [%i0 + UC_MCONTEXT + MC_XRS + XRS_ID] + st %g0, [%i0 + UC_MCONTEXT + MC_XRS + XRS_PTR] + jmpl %i7 + 8, %g0 + restore %g0, %g0, %o0 +END(__getcontext) + +weak_alias (__getcontext, getcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/makecontext.c uClibc-0.9.33.2/libc/sysdeps/linux/sparc/makecontext.c --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/makecontext.c 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/sparc/makecontext.c 2017-07-12 10:17:56.762437575 +0800 @@ -0,0 +1,92 @@ +/* Create new context. + Copyright (C) 2008-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David S. Miller <davem@davemloft.net>, 2008. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <stdarg.h> +#include <stdint.h> +#include <ucontext.h> + +/* Sets up the outgoing arguments and the program counter for a user + context for the requested function call. + + Returning to the correct parent context is pretty simple on + Sparc. We only need to link up the register windows correctly. + Since global registers are clobbered by calls, we need not be + concerned about those, and thus is all could be worked out without + using a trampoline. + + Except that we must deal with the signal mask, thus a trampoline + is unavoidable. 32-bit stackframe layout: + +-----------------------------------------+ + | 7th and further parameters | + +-----------------------------------------+ + | backup storage for initial 6 parameters | + +-----------------------------------------+ + | struct return pointer | + +-----------------------------------------+ + | 8 incoming registers | + +-----------------------------------------+ + | 8 local registers | + %sp --> +-----------------------------------------+ + +*/ + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __start_context (void); + unsigned long int *sp; + va_list ap; + int i; + + sp = (unsigned long int *) (ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size); + sp -= 16 + 7 + argc; + sp = (unsigned long int *) (((uintptr_t) sp) & ~(8 - 1)); + + for (i = 0; i < 8; i++) + sp[i + 8] = ucp->uc_mcontext.gregs[REG_O0 + i]; + + /* The struct return pointer is essentially unused, so we can + place the link there. */ + sp[16] = (unsigned long int) ucp->uc_link; + + va_start (ap, argc); + + /* Fill in outgoing arguments, including those which will + end up being passed on the stack. */ + for (i = 0; i < argc; i++) + { + unsigned long int arg = va_arg (ap, unsigned long int); + if (i < 6) + ucp->uc_mcontext.gregs[REG_O0 + i] = arg; + else + sp[i + 23 - 6] = arg; + } + + va_end (ap); + + ucp->uc_mcontext.gregs[REG_O6] = (unsigned long int) sp; + + ucp->uc_mcontext.gregs[REG_O7] = ((unsigned long int) __start_context) - 8; + + ucp->uc_mcontext.gregs[REG_PC] = (unsigned long int) func; + ucp->uc_mcontext.gregs[REG_nPC] = ucp->uc_mcontext.gregs[REG_PC] + 4; +} + +weak_alias (__makecontext, makecontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/Makefile.arch uClibc-0.9.33.2/libc/sysdeps/linux/sparc/Makefile.arch --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/Makefile.arch 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/sparc/Makefile.arch 2017-07-12 10:57:16.335050584 +0800 @@ -15,6 +15,12 @@ SSRC += fork.S vfork.S clone.S endif + +ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y) +CSRC += makecontext.c +SSRC += getcontext.S setcontext.S swapcontext.S +endif + # check weather __LONG_DOUBLE_128__ is defined (long double support) UCLIBC_SPARC_HAS_LONG_DOUBLE=$(shell if [ "x`$(CC) -E -dM -xc /dev/null 2>&1 | grep __LONG_DOUBLE_128__`" != "x" ]; then echo "y"; fi) ifeq ($(UCLIBC_SPARC_HAS_LONG_DOUBLE),y) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/setcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/sparc/setcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/setcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/sparc/setcontext.S 2017-07-12 10:17:49.947085839 +0800 @@ -0,0 +1,118 @@ +/* Install given context. + Copyright (C) 2008-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David S. Miller <davem@davemloft.net>, 2008. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + +#define ST_FLUSH_WINDOWS 3 + +/* int __setcontext (const ucontext_t *ucp) + + Restores the machine context in UCP and thereby resumes execution + in that context. + + This implementation is intended to be used for *synchronous* context + switches only. Therefore, it does not have to restore anything + other than the PRESERVED state. */ + +ENTRY(__setcontext) + save %sp, -112, %sp + + mov SIG_SETMASK, %o0 + add %i0, UC_SIGMASK, %o1 + clr %o2 + mov 8, %o3 + mov __NR_rt_sigprocmask, %g1 + ta 0x10 + + /* This is a bit on the expensive side, and we could optimize + the unwind similar to how the 32-bit sparc longjmp code + does if performance of this routine really matters. */ + ta ST_FLUSH_WINDOWS + + ldub [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_EN], %g1 + cmp %g1, 0 + be 1f + nop + ld [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_FSR], %fsr + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D0], %f0 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D2], %f2 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D4], %f4 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D6], %f6 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D8], %f8 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D10], %f10 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D12], %f12 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D14], %f14 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D16], %f16 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D18], %f18 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D20], %f20 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D22], %f22 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D24], %f24 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D26], %f26 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D28], %f28 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D30], %f30 +1: + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_Y], %g1 + wr %g1, 0x0, %y + + /* We specifically do not restore %g1 since we need it here as + a temporary. */ + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G2], %g2 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G3], %g3 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G4], %g4 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G5], %g5 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G6], %g6 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G7], %g7 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O1], %i1 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O2], %i2 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O3], %i3 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O4], %i4 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O5], %i5 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O6], %i6 + restore + ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_O7], %o7 + ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_PC], %g1 + jmpl %g1, %g0 + ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_O0], %o0 +END(__setcontext) + +weak_alias (__setcontext, setcontext) + +/* This is the helper code which gets called if a function which is + registered with 'makecontext' returns. In this case we have to + install the context listed in the uc_link element of the context + 'makecontext' manipulated at the time of the 'makecontext' call. + If the pointer is NULL the process must terminate. */ + +ENTRY(__start_context) + ld [%sp + (16 * 4)], %g1 + cmp %g1, 0 + be,a 1f + clr %o0 + call __setcontext + mov %g1, %o0 + /* If this returns (which can happen if the syscall fails) we'll + exit the program with the return error value (-1). */ +1: call HIDDEN_JUMPTARGET(exit) + nop + /* The 'exit' call should never return. In case it does cause + the process to terminate. */ + unimp +END(__start_context) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/swapcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/sparc/swapcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/swapcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/sparc/swapcontext.S 2017-07-12 10:18:03.383265516 +0800 @@ -0,0 +1,118 @@ +/* Save current context and install the given one. + Copyright (C) 2008-2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David S. Miller <davem@davemloft.net>, 2008. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + +#define ST_FLUSH_WINDOWS 3 + +/* int __swapcontext (ucontext_t *oucp, const ucontext_t *ucp); + + Saves the machine context in oucp such that when it is activated, + it appears as if __swapcontext() returned again, restores the + machine context in ucp and thereby resumes execution in that + context. + + This implementation is intended to be used for *synchronous* context + switches only. Therefore, it does not have to save anything + other than the PRESERVED state. */ + +ENTRY(__swapcontext) + save %sp, -112, %sp + ta ST_FLUSH_WINDOWS + st %g0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_PSR] + add %i7, 8, %o0 + st %o0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_PC] + add %o0, 4, %o0 + st %o0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_NPC] + rd %y, %o1 + st %o1, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_Y] + st %g1, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G1] + st %g2, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G2] + st %g3, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G3] + st %g4, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G4] + st %g5, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G5] + st %g6, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G6] + st %g7, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G7] + st %g0, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O0] + st %i1, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O1] + st %i2, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O2] + st %i3, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O3] + st %i4, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O4] + st %i5, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O5] + st %i6, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O6] + st %i7, [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O7] + st %g0, [%i0 + UC_MCONTEXT + MC_GWINS] + stb %g0, [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_EN] + st %g0, [%i0 + UC_MCONTEXT + MC_XRS + XRS_ID] + st %g0, [%i0 + UC_MCONTEXT + MC_XRS + XRS_PTR] + + mov SIG_SETMASK, %o0 + add %i1, UC_SIGMASK, %o1 + add %i0, UC_SIGMASK, %o2 + mov 8, %o3 + mov __NR_rt_sigprocmask, %g1 + ta 0x10 + + mov %i1, %i0 + ldub [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_EN], %g1 + cmp %g1, 0 + be 1f + nop + ld [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_FSR], %fsr + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D0], %f0 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D2], %f2 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D4], %f4 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D6], %f6 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D8], %f8 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D10], %f10 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D12], %f12 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D14], %f14 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D16], %f16 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D18], %f18 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D20], %f20 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D22], %f22 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D24], %f24 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D26], %f26 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D28], %f28 + ldd [%i0 + UC_MCONTEXT + MC_FPREGS + FPU_D30], %f30 +1: + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_Y], %g1 + wr %g1, 0x0, %y + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G2], %g2 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G3], %g3 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G4], %g4 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G5], %g5 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G6], %g6 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_G7], %g7 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O1], %i1 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O2], %i2 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O3], %i3 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O4], %i4 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O5], %i5 + ld [%i0 + UC_MCONTEXT + MC_GREGS + GREG_O6], %i6 + restore + ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_O7], %o7 + ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_PC], %g1 + jmpl %g1, %g0 + ld [%o0 + UC_MCONTEXT + MC_GREGS + GREG_O0], %o0 +END(__swapcontext) + +weak_alias (__swapcontext, swapcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/ucontext_i.sym uClibc-0.9.33.2/libc/sysdeps/linux/sparc/ucontext_i.sym --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/sparc/ucontext_i.sym 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/sparc/ucontext_i.sym 2017-07-12 10:18:08.675515988 +0800 @@ -0,0 +1,61 @@ +#include <stddef.h> +#include <signal.h> +#include <sys/ucontext.h> + +-- + +SIG_BLOCK +SIG_SETMASK + +UC_FLAGS offsetof (ucontext_t, uc_flags) +UC_LINK offsetof (ucontext_t, uc_link) +UC_SIGMASK offsetof (ucontext_t, uc_sigmask) +UC_STACK offsetof (ucontext_t, uc_stack) +UC_MCONTEXT offsetof (ucontext_t, uc_mcontext) +MC_GREGS offsetof (mcontext_t, gregs) +MC_GWINS offsetof (mcontext_t, gwins) +MC_FPREGS offsetof (mcontext_t, fpregs) +MC_XRS offsetof (mcontext_t, xrs) +MC_FILLER offsetof (mcontext_t, filler) +GREG_PSR (REG_PSR * sizeof(greg_t)) +GREG_PC (REG_PC * sizeof(greg_t)) +GREG_NPC (REG_nPC * sizeof(greg_t)) +GREG_Y (REG_Y * sizeof(greg_t)) +GREG_G1 (REG_G1 * sizeof(greg_t)) +GREG_G2 (REG_G2 * sizeof(greg_t)) +GREG_G3 (REG_G3 * sizeof(greg_t)) +GREG_G4 (REG_G4 * sizeof(greg_t)) +GREG_G5 (REG_G5 * sizeof(greg_t)) +GREG_G6 (REG_G6 * sizeof(greg_t)) +GREG_G7 (REG_G7 * sizeof(greg_t)) +GREG_O0 (REG_O0 * sizeof(greg_t)) +GREG_O1 (REG_O1 * sizeof(greg_t)) +GREG_O2 (REG_O2 * sizeof(greg_t)) +GREG_O3 (REG_O3 * sizeof(greg_t)) +GREG_O4 (REG_O4 * sizeof(greg_t)) +GREG_O5 (REG_O5 * sizeof(greg_t)) +GREG_O6 (REG_O6 * sizeof(greg_t)) +GREG_O7 (REG_O7 * sizeof(greg_t)) +FPU_D0 offsetof (fpregset_t, fpu_fr.fpu_dregs[0]) +FPU_D2 offsetof (fpregset_t, fpu_fr.fpu_dregs[1]) +FPU_D4 offsetof (fpregset_t, fpu_fr.fpu_dregs[2]) +FPU_D6 offsetof (fpregset_t, fpu_fr.fpu_dregs[3]) +FPU_D8 offsetof (fpregset_t, fpu_fr.fpu_dregs[4]) +FPU_D10 offsetof (fpregset_t, fpu_fr.fpu_dregs[5]) +FPU_D12 offsetof (fpregset_t, fpu_fr.fpu_dregs[6]) +FPU_D14 offsetof (fpregset_t, fpu_fr.fpu_dregs[7]) +FPU_D16 offsetof (fpregset_t, fpu_fr.fpu_dregs[8]) +FPU_D18 offsetof (fpregset_t, fpu_fr.fpu_dregs[9]) +FPU_D20 offsetof (fpregset_t, fpu_fr.fpu_dregs[10]) +FPU_D22 offsetof (fpregset_t, fpu_fr.fpu_dregs[11]) +FPU_D24 offsetof (fpregset_t, fpu_fr.fpu_dregs[12]) +FPU_D26 offsetof (fpregset_t, fpu_fr.fpu_dregs[13]) +FPU_D28 offsetof (fpregset_t, fpu_fr.fpu_dregs[14]) +FPU_D30 offsetof (fpregset_t, fpu_fr.fpu_dregs[15]) +FPU_Q offsetof (fpregset_t, fpu_q) +FPU_FSR offsetof (fpregset_t, fpu_fsr) +FPU_QCNT offsetof (fpregset_t, fpu_qcnt) +FPU_Q_ENTRY_SZ offsetof (fpregset_t, fpu_q_entrysize) +FPU_EN offsetof (fpregset_t, fpu_en) +XRS_ID offsetof (xrs_t, xrs_id) +XRS_PTR offsetof (xrs_t, xrs_ptr) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/getcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/getcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/getcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/getcontext.S 2017-07-12 10:20:37.753940299 +0800 @@ -0,0 +1,88 @@ +/* Save current context. + Copyright (C) 2002-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@suse.de>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + +/* int __getcontext (ucontext_t *ucp) + + Saves the machine context in UCP such that when it is activated, + it appears as if __getcontext() returned again. + + This implementation is intended to be used for *synchronous* context + switches only. Therefore, it does not have to save anything + other than the PRESERVED state. */ + + +ENTRY(__getcontext) + /* Save the preserved registers, the registers used for passing + args, and the return address. */ + movq %rbx, oRBX(%rdi) + movq %rbp, oRBP(%rdi) + movq %r12, oR12(%rdi) + movq %r13, oR13(%rdi) + movq %r14, oR14(%rdi) + movq %r15, oR15(%rdi) + + movq %rdi, oRDI(%rdi) + movq %rsi, oRSI(%rdi) + movq %rdx, oRDX(%rdi) + movq %rcx, oRCX(%rdi) + movq %r8, oR8(%rdi) + movq %r9, oR9(%rdi) + + movq (%rsp), %rcx + movq %rcx, oRIP(%rdi) + leaq 8(%rsp), %rcx /* Exclude the return address. */ + movq %rcx, oRSP(%rdi) + + /* We have separate floating-point register content memory on the + stack. We use the __fpregs_mem block in the context. Set the + links up correctly. */ + + leaq oFPREGSMEM(%rdi), %rcx + movq %rcx, oFPREGS(%rdi) + /* Save the floating-point environment. */ + fnstenv (%rcx) + fldenv (%rcx) + stmxcsr oMXCSR(%rdi) + + /* Save the current signal mask with + rt_sigprocmask (SIG_BLOCK, NULL, set,_NSIG/8). */ + leaq oSIGMASK(%rdi), %rdx + xorl %esi,%esi +#if SIG_BLOCK == 0 + xorl %edi, %edi +#else + movl $SIG_BLOCK, %edi +#endif + movl $_NSIG8,%r10d + movl $__NR_rt_sigprocmask, %eax + syscall + cmpq $-4095, %rax /* Check %rax for error. */ + jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + + /* All done, return 0 for success. */ + xorl %eax, %eax +L(pseudo_end): + ret +PSEUDO_END(__getcontext) + +weak_alias (__getcontext, getcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/makecontext.c uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/makecontext.c --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/makecontext.c 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/makecontext.c 2017-07-12 10:20:41.662464805 +0800 @@ -0,0 +1,121 @@ +/* Create new context. + Copyright (C) 2002, 2004, 2005, 2008 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@suse.de>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <stdarg.h> +#include <stdint.h> +#include <ucontext.h> + +#include "ucontext_i.h" + +/* This implementation can handle any ARGC value but only + normal integer parameters. + makecontext sets up a stack and the registers for the + user context. The stack looks like this: + +-----------------------+ + | next context | + +-----------------------+ + | parameter 7-n | + +-----------------------+ + | trampoline address | + %rsp -> +-----------------------+ + + The registers are set up like this: + %rdi,%rsi,%rdx,%rcx,%r8,%r9: parameter 1 to 6 + %rbx : address of next context + %rsp : stack pointer. +*/ + +/* XXX: This implementation currently only handles integer arguments. + To handle long int and pointer arguments the va_arg arguments needs + to be changed to long and also the stdlib/tst-setcontext.c file needs + to be changed to pass long arguments to makecontext. */ + + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __start_context (void); + greg_t *sp; + unsigned int idx_uc_link; + va_list ap; + int i; + + /* Generate room on stack for parameter if needed and uc_link. */ + sp = (greg_t *) ((uintptr_t) ucp->uc_stack.ss_sp + + ucp->uc_stack.ss_size); + sp -= (argc > 6 ? argc - 6 : 0) + 1; + /* Align stack and make space for trampoline address. */ + sp = (greg_t *) ((((uintptr_t) sp) & -16L) - 8); + + idx_uc_link = (argc > 6 ? argc - 6 : 0) + 1; + + /* Setup context ucp. */ + /* Address to jump to. */ + ucp->uc_mcontext.gregs[REG_RIP] = (uintptr_t) func; + /* Setup rbx.*/ + ucp->uc_mcontext.gregs[REG_RBX] = (uintptr_t) &sp[idx_uc_link]; + ucp->uc_mcontext.gregs[REG_RSP] = (uintptr_t) sp; + + /* Setup stack. */ + sp[0] = (uintptr_t) &__start_context; + sp[idx_uc_link] = (uintptr_t) ucp->uc_link; + + va_start (ap, argc); + /* Handle arguments. + + The standard says the parameters must all be int values. This is + an historic accident and would be done differently today. For + x86-64 all integer values are passed as 64-bit values and + therefore extending the API to copy 64-bit values instead of + 32-bit ints makes sense. It does not break existing + functionality and it does not violate the standard which says + that passing non-int values means undefined behavior. */ + for (i = 0; i < argc; ++i) + switch (i) + { + case 0: + ucp->uc_mcontext.gregs[REG_RDI] = va_arg (ap, greg_t); + break; + case 1: + ucp->uc_mcontext.gregs[REG_RSI] = va_arg (ap, greg_t); + break; + case 2: + ucp->uc_mcontext.gregs[REG_RDX] = va_arg (ap, greg_t); + break; + case 3: + ucp->uc_mcontext.gregs[REG_RCX] = va_arg (ap, greg_t); + break; + case 4: + ucp->uc_mcontext.gregs[REG_R8] = va_arg (ap, greg_t); + break; + case 5: + ucp->uc_mcontext.gregs[REG_R9] = va_arg (ap, greg_t); + break; + default: + /* Put value on stack. */ + sp[i - 5] = va_arg (ap, greg_t); + break; + } + va_end (ap); + +} + + +weak_alias (__makecontext, makecontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/Makefile.arch uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/Makefile.arch --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/Makefile.arch 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/Makefile.arch 2017-07-12 10:57:32.977050182 +0800 @@ -14,6 +14,11 @@ SSRC += vfork.S clone.S endif +ifeq ($(UCLIBC_HAS_CONTEXT_FUNCS),y) +CSRC += makecontext.c +SSRC += getcontext.S setcontext.S swapcontext.S +endif + ifeq ($(UCLIBC_LINUX_SPECIFIC),y) ARCH_OBJ_FILTEROUT = sched_getcpu.c ifeq ($(UCLIBC_HAS_TLS),y) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/setcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/setcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/setcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/setcontext.S 2017-07-12 10:20:46.996828676 +0800 @@ -0,0 +1,103 @@ +/* Install given context. + Copyright (C) 2002-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@suse.de>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + +/* int __setcontext (const ucontext_t *ucp) + + Restores the machine context in UCP and thereby resumes execution + in that context. + + This implementation is intended to be used for *synchronous* context + switches only. Therefore, it does not have to restore anything + other than the PRESERVED state. */ + +ENTRY(__setcontext) + /* Save argument since syscall will destroy it. */ + pushq %rdi + cfi_adjust_cfa_offset(8) + + /* Set the signal mask with + rt_sigprocmask (SIG_SETMASK, mask, NULL, _NSIG/8). */ + leaq oSIGMASK(%rdi), %rsi + xorl %edx, %edx + movl $SIG_SETMASK, %edi + movl $_NSIG8,%r10d + movl $__NR_rt_sigprocmask, %eax + syscall + popq %rdi /* Reload %rdi, adjust stack. */ + cfi_adjust_cfa_offset(-8) + cmpq $-4095, %rax /* Check %rax for error. */ + jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + + /* Restore the floating-point context. Not the registers, only the + rest. */ + movq oFPREGS(%rdi), %rcx + fldenv (%rcx) + ldmxcsr oMXCSR(%rdi) + + + /* Load the new stack pointer, the preserved registers and + registers used for passing args. */ + cfi_def_cfa(%rdi, 0) + cfi_offset(%rbx,oRBX) + cfi_offset(%rbp,oRBP) + cfi_offset(%r12,oR12) + cfi_offset(%r13,oR13) + cfi_offset(%r14,oR14) + cfi_offset(%r15,oR15) + cfi_offset(%rsp,oRSP) + cfi_offset(%rip,oRIP) + + movq oRSP(%rdi), %rsp + movq oRBX(%rdi), %rbx + movq oRBP(%rdi), %rbp + movq oR12(%rdi), %r12 + movq oR13(%rdi), %r13 + movq oR14(%rdi), %r14 + movq oR15(%rdi), %r15 + + /* The following ret should return to the address set with + getcontext. Therefore push the address on the stack. */ + movq oRIP(%rdi), %rcx + pushq %rcx + + movq oRSI(%rdi), %rsi + movq oRDX(%rdi), %rdx + movq oRCX(%rdi), %rcx + movq oR8(%rdi), %r8 + movq oR9(%rdi), %r9 + + /* Setup finally %rdi. */ + movq oRDI(%rdi), %rdi + + /* End FDE here, we fall into another context. */ + cfi_endproc + cfi_startproc + + /* Clear rax to indicate success. */ + xorl %eax, %eax +L(pseudo_end): + ret +PSEUDO_END(__setcontext) + +weak_alias (__setcontext, setcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/__start_context.S uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/__start_context.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/__start_context.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/__start_context.S 2017-07-12 10:21:17.456848543 +0800 @@ -0,0 +1,49 @@ +/* Copyright (C) 2002-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@suse.de>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +/* This is the helper code which gets called if a function which is + registered with 'makecontext' returns. In this case we have to + install the context listed in the uc_link element of the context + 'makecontext' manipulated at the time of the 'makecontext' call. + If the pointer is NULL the process must terminate. */ + + +ENTRY(__start_context) + /* This removes the parameters passed to the function given to + 'makecontext' from the stack. RBX contains the address + on the stack pointer for the next context. */ + movq %rbx, %rsp + + popq %rdi /* This is the next context. */ + cfi_adjust_cfa_offset(-8) + testq %rdi, %rdi + je 2f /* If it is zero exit. */ + + call JUMPTARGET(__setcontext) + /* If this returns (which can happen if the syscall fails) we'll + exit the program with the return error value (-1). */ + movq %rax,%rdi + +2: + call HIDDEN_JUMPTARGET(exit) + /* The 'exit' call should never return. In case it does cause + the process to terminate. */ + hlt +END(__start_context) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/swapcontext.S uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/swapcontext.S --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/swapcontext.S 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/swapcontext.S 2017-07-12 10:20:50.874269483 +0800 @@ -0,0 +1,121 @@ +/* Save current context and install the given one. + Copyright (C) 2002-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Jaeger <aj@suse.de>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> + +#include "ucontext_i.h" + + +/* int __swapcontext (ucontext_t *oucp, const ucontext_t *ucp); + + Saves the machine context in oucp such that when it is activated, + it appears as if __swapcontextt() returned again, restores the + machine context in ucp and thereby resumes execution in that + context. + + This implementation is intended to be used for *synchronous* context + switches only. Therefore, it does not have to save anything + other than the PRESERVED state. */ + +ENTRY(__swapcontext) + /* Save the preserved registers, the registers used for passing args, + and the return address. */ + movq %rbx, oRBX(%rdi) + movq %rbp, oRBP(%rdi) + movq %r12, oR12(%rdi) + movq %r13, oR13(%rdi) + movq %r14, oR14(%rdi) + movq %r15, oR15(%rdi) + + movq %rdi, oRDI(%rdi) + movq %rsi, oRSI(%rdi) + movq %rdx, oRDX(%rdi) + movq %rcx, oRCX(%rdi) + movq %r8, oR8(%rdi) + movq %r9, oR9(%rdi) + + movq (%rsp), %rcx + movq %rcx, oRIP(%rdi) + leaq 8(%rsp), %rcx /* Exclude the return address. */ + movq %rcx, oRSP(%rdi) + + /* We have separate floating-point register content memory on the + stack. We use the __fpregs_mem block in the context. Set the + links up correctly. */ + leaq oFPREGSMEM(%rdi), %rcx + movq %rcx, oFPREGS(%rdi) + /* Save the floating-point environment. */ + fnstenv (%rcx) + stmxcsr oMXCSR(%rdi) + + + /* The syscall destroys some registers, save them. */ + movq %rsi, %r12 + + /* Save the current signal mask and install the new one with + rt_sigprocmask (SIG_BLOCK, newset, oldset,_NSIG/8). */ + leaq oSIGMASK(%rdi), %rdx + leaq oSIGMASK(%rsi), %rsi + movl $SIG_SETMASK, %edi + movl $_NSIG8,%r10d + movl $__NR_rt_sigprocmask, %eax + syscall + cmpq $-4095, %rax /* Check %rax for error. */ + jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ + + /* Restore destroyed registers. */ + movq %r12, %rsi + + /* Restore the floating-point context. Not the registers, only the + rest. */ + movq oFPREGS(%rsi), %rcx + fldenv (%rcx) + ldmxcsr oMXCSR(%rsi) + + /* Load the new stack pointer and the preserved registers. */ + movq oRSP(%rsi), %rsp + movq oRBX(%rsi), %rbx + movq oRBP(%rsi), %rbp + movq oR12(%rsi), %r12 + movq oR13(%rsi), %r13 + movq oR14(%rsi), %r14 + movq oR15(%rsi), %r15 + + /* The following ret should return to the address set with + getcontext. Therefore push the address on the stack. */ + movq oRIP(%rsi), %rcx + pushq %rcx + + /* Setup registers used for passing args. */ + movq oRDI(%rsi), %rdi + movq oRDX(%rsi), %rdx + movq oRCX(%rsi), %rcx + movq oR8(%rsi), %r8 + movq oR9(%rsi), %r9 + + /* Setup finally %rsi. */ + movq oRSI(%rsi), %rsi + + /* Clear rax to indicate success. */ + xorl %eax, %eax +L(pseudo_end): + ret +PSEUDO_END(__swapcontext) + +weak_alias (__swapcontext, swapcontext) diff -auNr uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/ucontext_i.sym uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/ucontext_i.sym --- uClibc-0.9.33.2.orig/libc/sysdeps/linux/x86_64/ucontext_i.sym 1970-01-01 08:00:00.000000000 +0800 +++ uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/ucontext_i.sym 2017-07-12 10:20:54.252365702 +0800 @@ -0,0 +1,37 @@ +#include <stddef.h> +#include <signal.h> +#include <sys/ucontext.h> + +-- + +SIG_BLOCK +SIG_SETMASK + +_NSIG8 (_NSIG / 8) + +#define ucontext(member) offsetof (ucontext_t, member) +#define mcontext(member) ucontext (uc_mcontext.member) +#define mreg(reg) mcontext (gregs[REG_##reg]) + +oRBP mreg (RBP) +oRSP mreg (RSP) +oRBX mreg (RBX) +oR8 mreg (R8) +oR9 mreg (R9) +oR10 mreg (R10) +oR11 mreg (R11) +oR12 mreg (R12) +oR13 mreg (R13) +oR14 mreg (R14) +oR15 mreg (R15) +oRDI mreg (RDI) +oRSI mreg (RSI) +oRDX mreg (RDX) +oRAX mreg (RAX) +oRCX mreg (RCX) +oRIP mreg (RIP) +oEFL mreg (EFL) +oFPREGS mcontext (fpregs) +oSIGMASK ucontext (uc_sigmask) +oFPREGSMEM ucontext (__fpregs_mem) +oMXCSR ucontext (__fpregs_mem.mxcsr) diff -auNr uClibc-0.9.33.2.orig/Rules.mak uClibc-0.9.33.2/Rules.mak --- uClibc-0.9.33.2.orig/Rules.mak 2012-05-15 15:20:09.000000000 +0800 +++ uClibc-0.9.33.2/Rules.mak 2017-07-12 14:38:34.340616675 +0800 @@ -795,3 +795,4 @@ endif LOCAL_INSTALL_PATH := install_dir +PTHREAD_GENERATE_MANGLE ?= -n "s/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*\$$/\#define \1 \2/p" |
将uClibc clean掉,并重新make,开启:
1 2 3 |
ARCH_HAS_UCONTEXT=y UCLIBC_SUSV3_LEGACY=y UCLIBC_HAS_CONTEXT_FUNCS=y |
这样uClibc就可以支持ucontext的相关函数了。
参考资料:
Ralink SDK 64-bit cross-compiler on Ubuntu 15.04
How do I compile gnu libstdc++.a with PIC?
转载请注明: 转载自elkPi.com
本文链接地址: 在CentOS7上编译Ralink SDK 64-bit工具链