[35aab3] | 1 | /**************************************** |
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| 2 | * Computer Algebra System SINGULAR * |
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| 3 | ****************************************/ |
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[85e68dd] | 4 | /* $Id: mod_raw.cc,v 1.14 2008-03-19 17:44:10 Singular Exp $ */ |
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[35aab3] | 5 | /* |
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| 6 | * ABSTRACT: machine depend code for dynamic modules |
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| 7 | * |
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| 8 | * Provides: dynl_open() |
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| 9 | * dynl_sym() |
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| 10 | * dynl_error() |
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[4c7d73] | 11 | * dynl_close() |
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[35aab3] | 12 | */ |
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| 13 | |
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| 14 | #include <stdio.h> |
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[9ed245] | 15 | #include <string.h> |
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| 16 | #include <ctype.h> |
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| 17 | #include <sys/stat.h> |
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| 18 | |
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[35aab3] | 19 | |
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| 20 | #include "mod2.h" |
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[d7ec935] | 21 | #include "../Singular/static.h" |
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[35aab3] | 22 | #ifdef HAVE_STATIC |
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| 23 | #undef HAVE_DL |
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| 24 | #endif |
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| 25 | |
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| 26 | #include "mod_raw.h" |
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| 27 | #include "febase.h" |
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| 28 | |
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[9ed245] | 29 | /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ |
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| 30 | #define BYTES_TO_CHECK 7 |
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| 31 | |
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| 32 | lib_types type_of_LIB(char *newlib, char *libnamebuf) |
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| 33 | { |
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[1ea9a7] | 34 | const char mach_o[]={0xfe,0xed,0xfa,0xce,0}; |
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[9ed245] | 35 | char buf[BYTES_TO_CHECK+1]; /* one extra for terminating '\0' */ |
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| 36 | struct stat sb; |
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| 37 | int nbytes = 0; |
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| 38 | int ret; |
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| 39 | lib_types LT=LT_NONE; |
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| 40 | |
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| 41 | FILE * fp = feFopen( newlib, "r", libnamebuf, FALSE ); |
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| 42 | ret = stat(libnamebuf, &sb); |
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| 43 | |
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| 44 | if (fp==NULL) |
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| 45 | { |
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| 46 | return LT_NOTFOUND; |
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| 47 | } |
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| 48 | if((sb.st_mode & S_IFMT) != S_IFREG) |
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| 49 | { |
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| 50 | goto lib_type_end; |
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| 51 | } |
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| 52 | if ((nbytes = fread((char *)buf, sizeof(char), BYTES_TO_CHECK, fp)) == -1) |
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| 53 | { |
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| 54 | goto lib_type_end; |
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| 55 | /*NOTREACHED*/ |
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| 56 | } |
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| 57 | if (nbytes == 0) |
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| 58 | goto lib_type_end; |
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| 59 | else |
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| 60 | { |
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| 61 | buf[nbytes++] = '\0'; /* null-terminate it */ |
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| 62 | } |
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| 63 | if( (strncmp(buf, "\177ELF", 4)==0)) /* generic ELF */ |
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| 64 | { |
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| 65 | LT = LT_ELF; |
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| 66 | //omFree(newlib); |
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| 67 | //newlib = omStrDup(libnamebuf); |
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| 68 | goto lib_type_end; |
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| 69 | } |
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[1ea9a7] | 70 | |
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| 71 | |
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| 72 | |
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| 73 | if( (strncmp(buf, &mach_o[0], 4)==0)) /* generic Mach-O module */ |
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| 74 | { |
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| 75 | LT = LT_MACH_O; |
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| 76 | //omFree(newlib); |
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| 77 | //newlib = omStrDup(libnamebuf); |
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| 78 | goto lib_type_end; |
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| 79 | } |
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[9ed245] | 80 | if( (strncmp(buf, "\02\020\01\016\05\022@", 7)==0)) |
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| 81 | { |
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| 82 | LT = LT_HPUX; |
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| 83 | //omFree(newlib); |
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| 84 | //newlib = omStrDup(libnamebuf); |
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| 85 | goto lib_type_end; |
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| 86 | } |
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| 87 | if(isprint(buf[0]) || buf[0]=='\n') |
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| 88 | { LT = LT_SINGULAR; goto lib_type_end; } |
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| 89 | |
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| 90 | lib_type_end: |
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| 91 | fclose(fp); |
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| 92 | return LT; |
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| 93 | } |
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| 94 | /*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*/ |
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| 95 | #if defined(HAVE_DL) |
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| 96 | |
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[35aab3] | 97 | /***************************************************************************** |
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| 98 | * |
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| 99 | * General section |
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| 100 | * These are just wrappers around the repsective dynl_* calls |
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| 101 | * which look for the binary in the bin_dir of Singular and ommit warnings if |
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| 102 | * somethings goes wrong |
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| 103 | * |
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| 104 | *****************************************************************************/ |
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| 105 | static BOOLEAN warn_handle = FALSE; |
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| 106 | static BOOLEAN warn_proc = FALSE; |
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| 107 | #ifndef DL_TAIL |
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| 108 | #define DL_TAIL "so" |
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| 109 | #endif |
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| 110 | |
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| 111 | void* dynl_open_binary_warn(char* binary_name, const char* msg) |
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| 112 | { |
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| 113 | void* handle = NULL; |
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| 114 | const char* bin_dir = feGetResource('b'); |
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| 115 | if (bin_dir != NULL) |
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| 116 | { |
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| 117 | char path_name[MAXPATHLEN]; |
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| 118 | sprintf(path_name, "%s%s%s.%s", bin_dir, DIR_SEPP, binary_name, |
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| 119 | DL_TAIL); |
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| 120 | handle = dynl_open(path_name); |
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| 121 | if (handle == NULL && ! warn_handle) |
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| 122 | { |
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| 123 | Warn("Could not open dynamic library: %s", path_name); |
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| 124 | Warn("Error message from system: %s", dynl_error()); |
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| 125 | if (msg != NULL) Warn("%s", msg); |
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| 126 | Warn("See the INSTALL section in the Singular manual for details."); |
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| 127 | warn_handle = TRUE; |
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| 128 | } |
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| 129 | } |
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| 130 | return handle; |
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| 131 | } |
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| 132 | |
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[85e68dd] | 133 | void* dynl_sym_warn(void* handle, const char* proc, const char* msg) |
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[35aab3] | 134 | { |
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| 135 | void *proc_ptr = NULL; |
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| 136 | if (handle != NULL) |
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| 137 | { |
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| 138 | proc_ptr = dynl_sym(handle, proc); |
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| 139 | if (proc_ptr == NULL && ! warn_proc) |
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| 140 | { |
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| 141 | Warn("Could load a procedure from a dynamic library"); |
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| 142 | Warn("Error message from system: %s", dynl_error()); |
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| 143 | if (msg != NULL) Warn("%s", msg); |
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| 144 | Warn("See the INSTALL section in the Singular manual for details."); |
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| 145 | warn_proc = TRUE; |
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| 146 | } |
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| 147 | } |
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| 148 | return proc_ptr; |
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| 149 | } |
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| 150 | |
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| 151 | #ifdef __cplusplus |
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| 152 | extern "C" { |
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| 153 | #endif |
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| 154 | |
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| 155 | /***************************************************************************** |
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[fc300f] | 156 | * SECTION generic ELF: ix86-linux / alpha-linux / IA64-linux /x86_64_Linux * |
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[4287a0] | 157 | * SunOS-5 / IRIX-6 / ppcMac-Darwin / FreeeBSD * |
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[35aab3] | 158 | *****************************************************************************/ |
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| 159 | #if defined(ix86_Linux) |
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| 160 | #define HAVE_ELF_SYSTEM |
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| 161 | #endif |
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| 162 | |
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| 163 | #if defined(ix86_Linux_libc5) |
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| 164 | #define HAVE_ELF_SYSTEM |
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| 165 | #endif |
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| 166 | |
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| 167 | #if defined(DecAlpha_Linux) |
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| 168 | #define HAVE_ELF_SYSTEM |
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| 169 | #endif |
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| 170 | |
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| 171 | #if defined(IA64_Linux) |
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| 172 | #define HAVE_ELF_SYSTEM |
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| 173 | #endif |
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| 174 | |
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| 175 | #if defined(x86_64_Linux) |
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| 176 | #define HAVE_ELF_SYSTEM |
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| 177 | #endif |
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| 178 | |
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[4d8b94e] | 179 | #if defined(ppc_Linux) |
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| 180 | #define HAVE_ELF_SYSTEM |
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| 181 | #endif |
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| 182 | |
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[4d25ef] | 183 | #if defined(hppa_Linux) |
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| 184 | #define HAVE_ELF_SYSTEM |
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| 185 | #endif |
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| 186 | |
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[fc300f] | 187 | #if defined(SunOS_5) |
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| 188 | #define HAVE_ELF_SYSTEM |
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| 189 | #endif |
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| 190 | |
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| 191 | #ifdef IRIX_6 |
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| 192 | #define HAVE_ELF_SYSTEM |
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| 193 | #endif |
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| 194 | |
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[7c7282] | 195 | #ifdef ppcMac_darwin |
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| 196 | #define HAVE_ELF_SYSTEM |
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| 197 | #endif |
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| 198 | |
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[55b5cfd] | 199 | #ifdef ix86Mac_darwin |
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[e40798] | 200 | #define HAVE_ELF_SYSTEM |
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| 201 | #endif |
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| 202 | |
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[4287a0] | 203 | #ifdef ix86_freebsd |
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| 204 | #define HAVE_ELF_SYSTEM |
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| 205 | #endif |
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| 206 | |
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[fde597] | 207 | #ifdef sparc64_Linux |
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| 208 | #define HAVE_ELF_SYSTEM |
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| 209 | #endif |
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| 210 | |
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[35aab3] | 211 | #if defined(HAVE_ELF_SYSTEM) |
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| 212 | #include <dlfcn.h> |
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| 213 | |
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| 214 | static void* kernel_handle = NULL; |
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| 215 | void *dynl_open( |
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| 216 | char *filename /* I: filename to load */ |
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| 217 | ) |
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| 218 | { |
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| 219 | return(dlopen(filename, RTLD_NOW|RTLD_GLOBAL)); |
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| 220 | } |
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| 221 | |
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[85e68dd] | 222 | void *dynl_sym(void *handle, const char *symbol) |
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[35aab3] | 223 | { |
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| 224 | if (handle == DYNL_KERNEL_HANDLE) |
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| 225 | { |
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| 226 | if (kernel_handle == NULL) |
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| 227 | kernel_handle = dynl_open(NULL); |
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| 228 | handle = kernel_handle; |
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| 229 | } |
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| 230 | return(dlsym(handle, symbol)); |
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| 231 | } |
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| 232 | |
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| 233 | int dynl_close (void *handle) |
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| 234 | { |
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| 235 | return(dlclose (handle)); |
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| 236 | } |
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| 237 | |
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| 238 | const char *dynl_error() |
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| 239 | { |
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| 240 | return(dlerror()); |
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| 241 | } |
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[fc300f] | 242 | #endif /* ELF_SYSTEM */ |
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[35aab3] | 243 | |
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| 244 | /***************************************************************************** |
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| 245 | * SECTION HPUX-9/10 * |
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| 246 | *****************************************************************************/ |
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| 247 | #if defined(HPUX_9) || defined(HPUX_10) |
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| 248 | #include <dl.h> |
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| 249 | |
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| 250 | typedef char *((*func_ptr) ()); |
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| 251 | |
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| 252 | void *dynl_open(char *filename) |
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| 253 | { |
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| 254 | shl_t handle = shl_load(filename, BIND_DEFERRED, 0); |
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| 255 | |
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| 256 | return ((void *) handle); |
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| 257 | } |
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| 258 | |
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[85e68dd] | 259 | void *dynl_sym(void *handle, const char *symbol) |
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[35aab3] | 260 | { |
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| 261 | func_ptr f; |
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| 262 | |
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| 263 | if (handle == DYNL_KERNEL_HANDLE) |
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| 264 | handle = PROG_HANDLE; |
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| 265 | |
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| 266 | if (shl_findsym((shl_t *) & handle, symbol, TYPE_PROCEDURE, &f) == -1) |
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| 267 | { |
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| 268 | if (shl_findsym((shl_t *) & handle, symbol, TYPE_UNDEFINED, &f) == -1) |
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| 269 | { |
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| 270 | f = (func_ptr) NULL; |
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| 271 | } |
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| 272 | } |
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| 273 | return ((void *)f); |
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| 274 | } |
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| 275 | |
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| 276 | int dynl_close (void *handle) |
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| 277 | { |
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| 278 | shl_unload((shl_t) handle); |
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| 279 | return(0); |
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| 280 | } |
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| 281 | |
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| 282 | const char *dynl_error() |
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| 283 | { |
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| 284 | static char errmsg[] = "shl_load failed"; |
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| 285 | |
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| 286 | return errmsg; |
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| 287 | } |
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| 288 | #endif /* HPUX_9 or HPUX_10 */ |
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| 289 | |
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| 290 | /***************************************************************************** |
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| 291 | * SECTION AIX-4 * |
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| 292 | *****************************************************************************/ |
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| 293 | #ifdef AIX_4 |
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[fc300f] | 294 | #define DL_NOT_IMPLEMENTED |
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| 295 | #endif |
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[35aab3] | 296 | |
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| 297 | /***************************************************************************** |
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| 298 | * SECTION Sun3OS-4 * |
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| 299 | *****************************************************************************/ |
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| 300 | #ifdef Sun3OS_4 |
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[fc300f] | 301 | #define DL_NOT_IMPLEMENTED |
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| 302 | #endif |
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[35aab3] | 303 | |
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| 304 | /***************************************************************************** |
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| 305 | * SECTION SunOS-4 * |
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| 306 | *****************************************************************************/ |
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| 307 | #if defined(SunOS_4) |
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[fc300f] | 308 | #define DL_NOT_IMPLEMENTED |
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| 309 | #endif |
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[35aab3] | 310 | |
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| 311 | /***************************************************************************** |
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[fc300f] | 312 | * SECTION generic: dynamic madules not available |
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[35aab3] | 313 | *****************************************************************************/ |
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[fc300f] | 314 | #ifdef DL_NOT_IMPLEMEMENTED |
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[35aab3] | 315 | |
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| 316 | void *dynl_open(char *filename) |
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| 317 | { |
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| 318 | return(NULL); |
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| 319 | } |
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| 320 | |
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[85e68dd] | 321 | void *dynl_sym(void *handle, const char *symbol) |
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[35aab3] | 322 | { |
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| 323 | return(NULL); |
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| 324 | } |
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| 325 | |
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| 326 | int dynl_close (void *handle) |
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| 327 | { |
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| 328 | return(0); |
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| 329 | } |
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| 330 | |
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| 331 | const char *dynl_error() |
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| 332 | { |
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| 333 | static char errmsg[] = "support for dynamic loading not implemented"; |
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| 334 | return errmsg; |
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| 335 | } |
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[fc300f] | 336 | #endif |
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[35aab3] | 337 | |
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| 338 | #ifdef __cplusplus |
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| 339 | } |
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| 340 | #endif |
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| 341 | |
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| 342 | #endif /* HAVE_DL */ |
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