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author | rjohnson <rjohnson> | 1998-03-26 14:56:55 (GMT) |
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committer | rjohnson <rjohnson> | 1998-03-26 14:56:55 (GMT) |
commit | 72d823b9193f9ee2b0318563b49363cd08c11f24 (patch) | |
tree | c168cc164a71f320db9dcdfe7518ba7bd0d2c8d9 /unix/tclLoadOSF.c | |
parent | 2b5738da524e944cda39e24c0a87b745a43bd8c3 (diff) | |
download | tcl-72d823b9193f9ee2b0318563b49363cd08c11f24.zip tcl-72d823b9193f9ee2b0318563b49363cd08c11f24.tar.gz tcl-72d823b9193f9ee2b0318563b49363cd08c11f24.tar.bz2 |
Initial revision
Diffstat (limited to 'unix/tclLoadOSF.c')
-rw-r--r-- | unix/tclLoadOSF.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/unix/tclLoadOSF.c b/unix/tclLoadOSF.c new file mode 100644 index 0000000..ca8c8fc --- /dev/null +++ b/unix/tclLoadOSF.c @@ -0,0 +1,128 @@ +/* + * tclLoadOSF.c -- + * + * This procedure provides a version of the TclLoadFile that works + * under OSF/1 1.0/1.1/1.2 and related systems, utilizing the old OSF/1 + * /sbin/loader and /usr/include/loader.h. OSF/1 versions from 1.3 and + * on use ELF, rtld, and dlopen()[/usr/include/ldfcn.h]. + * + * This is useful for: + * OSF/1 1.0, 1.1, 1.2 (from OSF) + * includes: MK4 and AD1 (from OSF RI) + * OSF/1 1.3 (from OSF) using ROSE + * HP OSF/1 1.0 ("Acorn") using COFF + * + * This is likely to be useful for: + * Paragon OSF/1 (from Intel) + * HI-OSF/1 (from Hitachi) + * + * This is NOT to be used on: + * Digitial Alpha OSF/1 systems + * OSF/1 1.3 or later (from OSF) using ELF + * includes: MK6, MK7, AD2, AD3 (from OSF RI) + * + * This approach to things was utter @&^#; thankfully, + * OSF/1 eventually supported dlopen(). + * + * John Robert LoVerso <loverso@freebsd.osf.org> + * + * Copyright (c) 1995 Sun Microsystems, Inc. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * SCCS: @(#) tclLoadOSF.c 1.2 96/02/15 11:58:40 + */ + +#include "tclInt.h" +#include <sys/types.h> +#include <loader.h> + +/* + *---------------------------------------------------------------------- + * + * TclLoadFile -- + * + * Dynamically loads a binary code file into memory and returns + * the addresses of two procedures within that file, if they + * are defined. + * + * Results: + * A standard Tcl completion code. If an error occurs, an error + * message is left in interp->result. *proc1Ptr and *proc2Ptr + * are filled in with the addresses of the symbols given by + * *sym1 and *sym2, or NULL if those symbols can't be found. + * + * Side effects: + * New code suddenly appears in memory. + * + *---------------------------------------------------------------------- + */ + +int +TclLoadFile(interp, fileName, sym1, sym2, proc1Ptr, proc2Ptr) + Tcl_Interp *interp; /* Used for error reporting. */ + char *fileName; /* Name of the file containing the desired + * code. */ + char *sym1, *sym2; /* Names of two procedures to look up in + * the file's symbol table. */ + Tcl_PackageInitProc **proc1Ptr, **proc2Ptr; + /* Where to return the addresses corresponding + * to sym1 and sym2. */ +{ + ldr_module_t lm; + char *pkg; + + lm = (Tcl_PackageInitProc *) load(fileName, LDR_NOFLAGS); + if (lm == LDR_NULL_MODULE) { + Tcl_AppendResult(interp, "couldn't load file \"", fileName, + "\": ", Tcl_PosixError (interp), (char *) NULL); + return TCL_ERROR; + } + + /* + * My convention is to use a [OSF loader] package name the same as shlib, + * since the idiots never implemented ldr_lookup() and it is otherwise + * impossible to get a package name given a module. + * + * I build loadable modules with a makefile rule like + * ld ... -export $@: -o $@ $(OBJS) + */ + if ((pkg = strrchr(fileName, '/')) == NULL) + pkg = fileName; + else + pkg++; + *proc1Ptr = ldr_lookup_package(pkg, sym1); + *proc2Ptr = ldr_lookup_package(pkg, sym2); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * TclGuessPackageName -- + * + * If the "load" command is invoked without providing a package + * name, this procedure is invoked to try to figure it out. + * + * Results: + * Always returns 0 to indicate that we couldn't figure out a + * package name; generic code will then try to guess the package + * from the file name. A return value of 1 would have meant that + * we figured out the package name and put it in bufPtr. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +int +TclGuessPackageName(fileName, bufPtr) + char *fileName; /* Name of file containing package (already + * translated to local form if needed). */ + Tcl_DString *bufPtr; /* Initialized empty dstring. Append + * package name to this if possible. */ +{ + return 0; +} |