[35aab3] | 1 | /**************************************** |
---|
| 2 | * Computer Algebra System SINGULAR * |
---|
| 3 | ****************************************/ |
---|
[341696] | 4 | /* $Id$ */ |
---|
[35aab3] | 5 | /* |
---|
| 6 | * ABSTRACT: machine depend code for dynamic modules |
---|
| 7 | * |
---|
| 8 | * Provides: dynl_open() |
---|
| 9 | * dynl_sym() |
---|
| 10 | * dynl_error() |
---|
[4c7d73] | 11 | * dynl_close() |
---|
[35aab3] | 12 | */ |
---|
| 13 | |
---|
| 14 | #include <stdio.h> |
---|
[9ed245] | 15 | #include <string.h> |
---|
| 16 | #include <ctype.h> |
---|
| 17 | #include <sys/stat.h> |
---|
| 18 | |
---|
[35aab3] | 19 | |
---|
| 20 | #include "mod2.h" |
---|
[d7ec935] | 21 | #include "../Singular/static.h" |
---|
[35aab3] | 22 | |
---|
| 23 | #include "mod_raw.h" |
---|
| 24 | #include "febase.h" |
---|
| 25 | |
---|
[abaf13] | 26 | #ifdef HAVE_STATIC |
---|
| 27 | #undef HAVE_DL |
---|
| 28 | #endif |
---|
[9ed245] | 29 | /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ |
---|
| 30 | #define BYTES_TO_CHECK 7 |
---|
| 31 | |
---|
| 32 | lib_types type_of_LIB(char *newlib, char *libnamebuf) |
---|
| 33 | { |
---|
[1ea9a7] | 34 | const char mach_o[]={0xfe,0xed,0xfa,0xce,0}; |
---|
[9ed245] | 35 | char buf[BYTES_TO_CHECK+1]; /* one extra for terminating '\0' */ |
---|
| 36 | struct stat sb; |
---|
| 37 | int nbytes = 0; |
---|
| 38 | int ret; |
---|
| 39 | lib_types LT=LT_NONE; |
---|
| 40 | |
---|
| 41 | FILE * fp = feFopen( newlib, "r", libnamebuf, FALSE ); |
---|
| 42 | ret = stat(libnamebuf, &sb); |
---|
| 43 | |
---|
| 44 | if (fp==NULL) |
---|
| 45 | { |
---|
| 46 | return LT_NOTFOUND; |
---|
| 47 | } |
---|
| 48 | if((sb.st_mode & S_IFMT) != S_IFREG) |
---|
| 49 | { |
---|
| 50 | goto lib_type_end; |
---|
| 51 | } |
---|
| 52 | if ((nbytes = fread((char *)buf, sizeof(char), BYTES_TO_CHECK, fp)) == -1) |
---|
| 53 | { |
---|
| 54 | goto lib_type_end; |
---|
| 55 | /*NOTREACHED*/ |
---|
| 56 | } |
---|
| 57 | if (nbytes == 0) |
---|
| 58 | goto lib_type_end; |
---|
| 59 | else |
---|
| 60 | { |
---|
| 61 | buf[nbytes++] = '\0'; /* null-terminate it */ |
---|
| 62 | } |
---|
| 63 | if( (strncmp(buf, "\177ELF", 4)==0)) /* generic ELF */ |
---|
| 64 | { |
---|
| 65 | LT = LT_ELF; |
---|
| 66 | //omFree(newlib); |
---|
| 67 | //newlib = omStrDup(libnamebuf); |
---|
| 68 | goto lib_type_end; |
---|
| 69 | } |
---|
[1ea9a7] | 70 | |
---|
| 71 | if( (strncmp(buf, &mach_o[0], 4)==0)) /* generic Mach-O module */ |
---|
| 72 | { |
---|
| 73 | LT = LT_MACH_O; |
---|
| 74 | //omFree(newlib); |
---|
| 75 | //newlib = omStrDup(libnamebuf); |
---|
| 76 | goto lib_type_end; |
---|
| 77 | } |
---|
[9ed245] | 78 | if( (strncmp(buf, "\02\020\01\016\05\022@", 7)==0)) |
---|
| 79 | { |
---|
| 80 | LT = LT_HPUX; |
---|
| 81 | //omFree(newlib); |
---|
| 82 | //newlib = omStrDup(libnamebuf); |
---|
| 83 | goto lib_type_end; |
---|
| 84 | } |
---|
| 85 | if(isprint(buf[0]) || buf[0]=='\n') |
---|
| 86 | { LT = LT_SINGULAR; goto lib_type_end; } |
---|
| 87 | |
---|
| 88 | lib_type_end: |
---|
| 89 | fclose(fp); |
---|
| 90 | return LT; |
---|
| 91 | } |
---|
| 92 | /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ |
---|
| 93 | #if defined(HAVE_DL) |
---|
| 94 | |
---|
[35aab3] | 95 | /***************************************************************************** |
---|
| 96 | * |
---|
| 97 | * General section |
---|
[abaf13] | 98 | * These are just wrappers around the repsective dynl_* calls |
---|
[35aab3] | 99 | * which look for the binary in the bin_dir of Singular and ommit warnings if |
---|
| 100 | * somethings goes wrong |
---|
| 101 | * |
---|
| 102 | *****************************************************************************/ |
---|
| 103 | static BOOLEAN warn_handle = FALSE; |
---|
| 104 | static BOOLEAN warn_proc = FALSE; |
---|
| 105 | #ifndef DL_TAIL |
---|
| 106 | #define DL_TAIL "so" |
---|
| 107 | #endif |
---|
| 108 | |
---|
[9ef9d0] | 109 | void* dynl_open_binary_warn(const char* binary_name, const char* msg) |
---|
[35aab3] | 110 | { |
---|
| 111 | void* handle = NULL; |
---|
| 112 | const char* bin_dir = feGetResource('b'); |
---|
| 113 | if (bin_dir != NULL) |
---|
| 114 | { |
---|
| 115 | char path_name[MAXPATHLEN]; |
---|
[abaf13] | 116 | sprintf(path_name, "%s%s%s.%s", bin_dir, DIR_SEPP, binary_name, |
---|
[35aab3] | 117 | DL_TAIL); |
---|
| 118 | handle = dynl_open(path_name); |
---|
| 119 | if (handle == NULL && ! warn_handle) |
---|
| 120 | { |
---|
| 121 | Warn("Could not open dynamic library: %s", path_name); |
---|
| 122 | Warn("Error message from system: %s", dynl_error()); |
---|
| 123 | if (msg != NULL) Warn("%s", msg); |
---|
| 124 | Warn("See the INSTALL section in the Singular manual for details."); |
---|
| 125 | warn_handle = TRUE; |
---|
| 126 | } |
---|
| 127 | } |
---|
| 128 | return handle; |
---|
| 129 | } |
---|
| 130 | |
---|
[85e68dd] | 131 | void* dynl_sym_warn(void* handle, const char* proc, const char* msg) |
---|
[35aab3] | 132 | { |
---|
| 133 | void *proc_ptr = NULL; |
---|
| 134 | if (handle != NULL) |
---|
| 135 | { |
---|
| 136 | proc_ptr = dynl_sym(handle, proc); |
---|
| 137 | if (proc_ptr == NULL && ! warn_proc) |
---|
| 138 | { |
---|
| 139 | Warn("Could load a procedure from a dynamic library"); |
---|
| 140 | Warn("Error message from system: %s", dynl_error()); |
---|
| 141 | if (msg != NULL) Warn("%s", msg); |
---|
| 142 | Warn("See the INSTALL section in the Singular manual for details."); |
---|
| 143 | warn_proc = TRUE; |
---|
| 144 | } |
---|
| 145 | } |
---|
| 146 | return proc_ptr; |
---|
| 147 | } |
---|
| 148 | |
---|
| 149 | #ifdef __cplusplus |
---|
| 150 | extern "C" { |
---|
| 151 | #endif |
---|
| 152 | |
---|
| 153 | /***************************************************************************** |
---|
[fc300f] | 154 | * SECTION generic ELF: ix86-linux / alpha-linux / IA64-linux /x86_64_Linux * |
---|
[4287a0] | 155 | * SunOS-5 / IRIX-6 / ppcMac-Darwin / FreeeBSD * |
---|
[35aab3] | 156 | *****************************************************************************/ |
---|
| 157 | #if defined(ix86_Linux) |
---|
| 158 | #define HAVE_ELF_SYSTEM |
---|
| 159 | #endif |
---|
| 160 | |
---|
| 161 | #if defined(ix86_Linux_libc5) |
---|
| 162 | #define HAVE_ELF_SYSTEM |
---|
| 163 | #endif |
---|
| 164 | |
---|
| 165 | #if defined(DecAlpha_Linux) |
---|
| 166 | #define HAVE_ELF_SYSTEM |
---|
| 167 | #endif |
---|
| 168 | |
---|
| 169 | #if defined(IA64_Linux) |
---|
| 170 | #define HAVE_ELF_SYSTEM |
---|
| 171 | #endif |
---|
| 172 | |
---|
| 173 | #if defined(x86_64_Linux) |
---|
| 174 | #define HAVE_ELF_SYSTEM |
---|
| 175 | #endif |
---|
| 176 | |
---|
[4d8b94e] | 177 | #if defined(ppc_Linux) |
---|
| 178 | #define HAVE_ELF_SYSTEM |
---|
| 179 | #endif |
---|
| 180 | |
---|
[4d25ef] | 181 | #if defined(hppa_Linux) |
---|
| 182 | #define HAVE_ELF_SYSTEM |
---|
| 183 | #endif |
---|
| 184 | |
---|
[fc300f] | 185 | #if defined(SunOS_5) |
---|
| 186 | #define HAVE_ELF_SYSTEM |
---|
| 187 | #endif |
---|
| 188 | |
---|
| 189 | #ifdef IRIX_6 |
---|
| 190 | #define HAVE_ELF_SYSTEM |
---|
| 191 | #endif |
---|
| 192 | |
---|
[7c7282] | 193 | #ifdef ppcMac_darwin |
---|
| 194 | #define HAVE_ELF_SYSTEM |
---|
| 195 | #endif |
---|
| 196 | |
---|
[55b5cfd] | 197 | #ifdef ix86Mac_darwin |
---|
[e40798] | 198 | #define HAVE_ELF_SYSTEM |
---|
| 199 | #endif |
---|
| 200 | |
---|
[4287a0] | 201 | #ifdef ix86_freebsd |
---|
| 202 | #define HAVE_ELF_SYSTEM |
---|
| 203 | #endif |
---|
| 204 | |
---|
[fde597] | 205 | #ifdef sparc64_Linux |
---|
| 206 | #define HAVE_ELF_SYSTEM |
---|
| 207 | #endif |
---|
| 208 | |
---|
[35aab3] | 209 | #if defined(HAVE_ELF_SYSTEM) |
---|
| 210 | #include <dlfcn.h> |
---|
| 211 | |
---|
| 212 | static void* kernel_handle = NULL; |
---|
| 213 | void *dynl_open( |
---|
| 214 | char *filename /* I: filename to load */ |
---|
| 215 | ) |
---|
| 216 | { |
---|
| 217 | return(dlopen(filename, RTLD_NOW|RTLD_GLOBAL)); |
---|
| 218 | } |
---|
| 219 | |
---|
[85e68dd] | 220 | void *dynl_sym(void *handle, const char *symbol) |
---|
[35aab3] | 221 | { |
---|
| 222 | if (handle == DYNL_KERNEL_HANDLE) |
---|
| 223 | { |
---|
| 224 | if (kernel_handle == NULL) |
---|
| 225 | kernel_handle = dynl_open(NULL); |
---|
| 226 | handle = kernel_handle; |
---|
| 227 | } |
---|
| 228 | return(dlsym(handle, symbol)); |
---|
| 229 | } |
---|
| 230 | |
---|
| 231 | int dynl_close (void *handle) |
---|
| 232 | { |
---|
| 233 | return(dlclose (handle)); |
---|
| 234 | } |
---|
| 235 | |
---|
| 236 | const char *dynl_error() |
---|
| 237 | { |
---|
| 238 | return(dlerror()); |
---|
| 239 | } |
---|
[fc300f] | 240 | #endif /* ELF_SYSTEM */ |
---|
[35aab3] | 241 | |
---|
| 242 | /***************************************************************************** |
---|
| 243 | * SECTION HPUX-9/10 * |
---|
| 244 | *****************************************************************************/ |
---|
| 245 | #if defined(HPUX_9) || defined(HPUX_10) |
---|
| 246 | #include <dl.h> |
---|
| 247 | |
---|
| 248 | typedef char *((*func_ptr) ()); |
---|
| 249 | |
---|
| 250 | void *dynl_open(char *filename) |
---|
| 251 | { |
---|
| 252 | shl_t handle = shl_load(filename, BIND_DEFERRED, 0); |
---|
| 253 | |
---|
| 254 | return ((void *) handle); |
---|
| 255 | } |
---|
| 256 | |
---|
[85e68dd] | 257 | void *dynl_sym(void *handle, const char *symbol) |
---|
[35aab3] | 258 | { |
---|
| 259 | func_ptr f; |
---|
[abaf13] | 260 | |
---|
[35aab3] | 261 | if (handle == DYNL_KERNEL_HANDLE) |
---|
| 262 | handle = PROG_HANDLE; |
---|
[abaf13] | 263 | |
---|
[35aab3] | 264 | if (shl_findsym((shl_t *) & handle, symbol, TYPE_PROCEDURE, &f) == -1) |
---|
| 265 | { |
---|
| 266 | if (shl_findsym((shl_t *) & handle, symbol, TYPE_UNDEFINED, &f) == -1) |
---|
| 267 | { |
---|
| 268 | f = (func_ptr) NULL; |
---|
| 269 | } |
---|
| 270 | } |
---|
| 271 | return ((void *)f); |
---|
| 272 | } |
---|
| 273 | |
---|
| 274 | int dynl_close (void *handle) |
---|
| 275 | { |
---|
| 276 | shl_unload((shl_t) handle); |
---|
| 277 | return(0); |
---|
| 278 | } |
---|
| 279 | |
---|
| 280 | const char *dynl_error() |
---|
| 281 | { |
---|
| 282 | static char errmsg[] = "shl_load failed"; |
---|
| 283 | |
---|
| 284 | return errmsg; |
---|
| 285 | } |
---|
| 286 | #endif /* HPUX_9 or HPUX_10 */ |
---|
| 287 | |
---|
| 288 | /***************************************************************************** |
---|
| 289 | * SECTION AIX-4 * |
---|
| 290 | *****************************************************************************/ |
---|
| 291 | #ifdef AIX_4 |
---|
[fc300f] | 292 | #define DL_NOT_IMPLEMENTED |
---|
| 293 | #endif |
---|
[35aab3] | 294 | |
---|
| 295 | /***************************************************************************** |
---|
| 296 | * SECTION Sun3OS-4 * |
---|
| 297 | *****************************************************************************/ |
---|
| 298 | #ifdef Sun3OS_4 |
---|
[fc300f] | 299 | #define DL_NOT_IMPLEMENTED |
---|
| 300 | #endif |
---|
[35aab3] | 301 | |
---|
| 302 | /***************************************************************************** |
---|
| 303 | * SECTION SunOS-4 * |
---|
| 304 | *****************************************************************************/ |
---|
| 305 | #if defined(SunOS_4) |
---|
[fc300f] | 306 | #define DL_NOT_IMPLEMENTED |
---|
| 307 | #endif |
---|
[abaf13] | 308 | |
---|
[35aab3] | 309 | /***************************************************************************** |
---|
[fc300f] | 310 | * SECTION generic: dynamic madules not available |
---|
[35aab3] | 311 | *****************************************************************************/ |
---|
[fc300f] | 312 | #ifdef DL_NOT_IMPLEMEMENTED |
---|
[35aab3] | 313 | |
---|
| 314 | void *dynl_open(char *filename) |
---|
| 315 | { |
---|
| 316 | return(NULL); |
---|
| 317 | } |
---|
| 318 | |
---|
[85e68dd] | 319 | void *dynl_sym(void *handle, const char *symbol) |
---|
[35aab3] | 320 | { |
---|
| 321 | return(NULL); |
---|
| 322 | } |
---|
| 323 | |
---|
| 324 | int dynl_close (void *handle) |
---|
| 325 | { |
---|
| 326 | return(0); |
---|
| 327 | } |
---|
| 328 | |
---|
| 329 | const char *dynl_error() |
---|
| 330 | { |
---|
| 331 | static char errmsg[] = "support for dynamic loading not implemented"; |
---|
| 332 | return errmsg; |
---|
| 333 | } |
---|
[fc300f] | 334 | #endif |
---|
[35aab3] | 335 | |
---|
| 336 | #ifdef __cplusplus |
---|
| 337 | } |
---|
| 338 | #endif |
---|
| 339 | |
---|
| 340 | #endif /* HAVE_DL */ |
---|