drop support of ancient BSD, IRIX4, RISCos, Ultrix, and ldAout.tcl

1 files changed, 0 insertions, 575 deletions

diff --git a/unix/tclLoadAout.c b/unix/tclLoadAout.c
deleted file mode 100644
index 7557a94..0000000
--- a/unix/tclLoadAout.c
+++ /dev/null
@@ -1,575 +0,0 @@
-/*
- * tclLoadAout.c --
- *
- *	This procedure provides a version of the TclLoadFile that provides
- *	pseudo-static linking using version-7 compatible a.out files described
- *	in either sys/exec.h or sys/a.out.h.
- *
- * Copyright (c) 1995, by General Electric Company. All rights reserved.
- *
- * See the file "license.terms" for information on usage and redistribution of
- * this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * This work was supported in part by the ARPA Manufacturing Automation and
- * Design Engineering (MADE) Initiative through ARPA contract
- * F33615-94-C-4400.
- *
- * RCS: @(#) $Id: tclLoadAout.c,v 1.15 2005/07/19 13:37:18 dkf Exp $
- */
-
-#include "tclInt.h"
-#include <fcntl.h>
-#ifdef HAVE_EXEC_AOUT_H
-#   include <sys/exec_aout.h>
-#endif
-#ifdef HAVE_UNISTD_H
-#   include <unistd.h>
-#else
-#   include "../compat/unistd.h"
-#endif
-
-/*
- * Some systems describe the a.out header in sys/exec.h, and some in a.out.h.
- */
-
-#ifdef USE_SYS_EXEC_H
-#include <sys/exec.h>
-#endif
-#ifdef USE_A_OUT_H
-#include <a.out.h>
-#endif
-#ifdef USE_SYS_EXEC_AOUT_H
-#include <sys/exec_aout.h>
-#define a_magic a_midmag
-#endif
-
-/*
- * TCL_LOADSHIM is the amount by which to shim the break when loading
- */
-
-#ifndef TCL_LOADSHIM
-#define TCL_LOADSHIM	0x4000L
-#endif
-
-/*
- * TCL_LOADALIGN must be a power of 2, and is the alignment to which to force
- * the origin of load modules
- */
-
-#ifndef TCL_LOADALIGN
-#define TCL_LOADALIGN	0x4000L
-#endif
-
-/*
- * TCL_LOADMAX is the maximum size of a load module, and is used as a sanity
- * check when loading
- */
-
-#ifndef TCL_LOADMAX
-#define TCL_LOADMAX	2000000L
-#endif
-
-/*
- * Kernel calls that appear to be missing from the system .h files:
- */
-
-extern char *		brk _ANSI_ARGS_((char *));
-extern char *		sbrk _ANSI_ARGS_((size_t));
-
-/*
- * The static variable SymbolTableFile contains the file name where the result
- * of the last link was stored.  The file is kept because doing so allows one
- * load module to use the symbols defined in another.
- */
-
-static char *SymbolTableFile = NULL;
-
-/*
- * Type of the dictionary function that begins each load module.
- */
-
-typedef Tcl_PackageInitProc * (* DictFn) _ANSI_ARGS_((CONST char * symbol));
-
-/*
- * Prototypes for procedures referenced only in this file:
- */
-
-static int		FindLibraries _ANSI_ARGS_((Tcl_Interp *interp,
-			    Tcl_Obj *pathPtr, Tcl_DString *buf));
-static void		UnlinkSymbolTable _ANSI_ARGS_((void));
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpDlopen --
- *
- *	Dynamically loads a binary code file into memory and returns a handle
- *	to the new code.
- *
- * Results:
- *	A standard Tcl completion code.  If an error occurs, an error message
- *	is left in the interp's result.
- *
- * Side effects:
- *	New code suddenly appears in memory.
- *
- * Bugs:
- *	This function does not attempt to handle the case where the BSS
- *	segment is not executable. It will therefore fail on Encore Multimax,
- *	Pyramid 90x, and similar machines. The reason is that the mprotect()
- *	kernel call, which would otherwise be employed to mark the
- *	newly-loaded text segment executable, results in a system crash on
- *	BSD/386.
- *
- *	In an effort to make it fast, this function eschews the technique of
- *	linking the load module once, reading its header to determine its
- *	size, allocating memory for it, and linking it again. Instead, it
- *	`shims out' memory allocation by placing the module TCL_LOADSHIM bytes
- *	beyond the break, and assuming that any malloc() calls required to run
- *	the linker will not advance the break beyond that point. If the break
- *	is advanced beyonnd that point, the load will fail with an
- *	`inconsistent memory allocation' error. It perhaps ought to retry the
- *	link, but the failure has not been observed in two years of daily use
- *	of this function.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TclpDlopen(interp, pathPtr, loadHandle, unloadProcPtr)
-    Tcl_Interp *interp;		/* Used for error reporting. */
-    Tcl_Obj *pathPtr;		/* Name of the file containing the desired
-				 * code (UTF-8). */
-    Tcl_LoadHandle *loadHandle;	/* Filled with token for dynamically loaded
-				 * file which will be passed back to
-				 * (*unloadProcPtr)() to unload the file. */
-    Tcl_FSUnloadFileProc **unloadProcPtr;
-				/* Filled with address of Tcl_FSUnloadFileProc
-				 * function which should be used for this
-				 * file. */
-{
-    char * inputSymbolTable;	/* Name of the file containing the symbol
-				 * table from the last link. */
-    Tcl_DString linkCommandBuf;	/* Command to do the run-time relocation of
-				 * the module.*/
-    char * linkCommand;
-    char relocatedFileName [L_tmpnam];
-				/* Name of the file holding the relocated */
-				/* text of the module */
-    int relocatedFd;		/* File descriptor of the file holding
-				 * relocated text */
-    struct exec relocatedHead;	/* Header of the relocated text */
-    unsigned long relocatedSize;/* Size of the relocated text */
-    char * startAddress;	/* Starting address of the module */
-    int status;			/* Status return from Tcl_ calls */
-    char * p;
-
-    /*
-     * Find the file that contains the symbols for the run-time link.
-     */
-
-    if (SymbolTableFile != NULL) {
-	inputSymbolTable = SymbolTableFile;
-    } else if (tclExecutableName == NULL) {
-	Tcl_SetResult(interp, "can't find the tclsh executable", TCL_STATIC);
-	return TCL_ERROR;
-    } else {
-	inputSymbolTable = tclExecutableName;
-    }
-
-    /*
-     * Construct the `ld' command that builds the relocated module.
-     */
-
-    tmpnam(relocatedFileName);
-    Tcl_DStringInit(&linkCommandBuf);
-    Tcl_DStringAppend(&linkCommandBuf, "exec ld -o ", -1);
-    Tcl_DStringAppend(&linkCommandBuf, relocatedFileName, -1);
-#if defined(__mips) || defined(mips)
-    Tcl_DStringAppend(&linkCommandBuf, " -G 0 ", -1);
-#endif
-    Tcl_DStringAppend(&linkCommandBuf, " -u TclLoadDictionary_", -1);
-    TclGuessPackageName(Tcl_GetString(pathPtr), &linkCommandBuf);
-    Tcl_DStringAppend(&linkCommandBuf, " -A ", -1);
-    Tcl_DStringAppend(&linkCommandBuf, inputSymbolTable, -1);
-    Tcl_DStringAppend(&linkCommandBuf, " -N -T XXXXXXXX ", -1);
-    Tcl_DStringAppend(&linkCommandBuf, Tcl_GetString(pathPtr), -1);
-    Tcl_DStringAppend(&linkCommandBuf, " ", -1);
-
-    if (FindLibraries(interp, pathPtr, &linkCommandBuf) != TCL_OK) {
-	Tcl_DStringFree(&linkCommandBuf);
-	return TCL_ERROR;
-    }
-
-    linkCommand = Tcl_DStringValue(&linkCommandBuf);
-
-    /*
-     * Determine the starting address, and plug it into the command.
-     */
-
-    startAddress = (char *) (((unsigned long) sbrk(0)
-	    + TCL_LOADSHIM + TCL_LOADALIGN - 1) & (- TCL_LOADALIGN));
-    p = strstr(linkCommand, "-T") + 3;
-    sprintf(p, "%08lx", (long) startAddress);
-    p[8] = ' ';
-
-    /*
-     * Run the linker.
-     */
-
-    status = Tcl_Eval(interp, linkCommand);
-    Tcl_DStringFree(&linkCommandBuf);
-    if (status != 0) {
-	return TCL_ERROR;
-    }
-
-    /*
-     * Open the linker's result file and read the header.
-     */
-
-    relocatedFd = open(relocatedFileName, O_RDONLY);
-    if (relocatedFd < 0) {
-	goto ioError;
-    }
-    status = read(relocatedFd, (char *) &relocatedHead, sizeof(relocatedHead));
-    if (status < sizeof relocatedHead) {
-	goto ioError;
-    }
-
-    /*
-     * Check the magic number.
-     */
-
-    if (relocatedHead.a_magic != OMAGIC) {
-	Tcl_AppendResult(interp, "bad magic number in intermediate file \"",
-		relocatedFileName, "\"", (char *) NULL);
-	goto failure;
-    }
-
-    /*
-     * Make sure that memory allocation is still consistent.
-     */
-
-    if ((unsigned long) sbrk(0) > (unsigned long) startAddress) {
-	Tcl_SetResult(interp, "can't load, memory allocation is inconsistent.",
-		TCL_STATIC);
-	goto failure;
-    }
-
-    /*
-     * Make sure that the relocated module's size is reasonable.
-     */
-
-    relocatedSize = relocatedHead.a_text + relocatedHead.a_data
-	    + relocatedHead.a_bss;
-    if (relocatedSize > TCL_LOADMAX) {
-	Tcl_SetResult(interp, "module too big to load", TCL_STATIC);
-	goto failure;
-    }
-
-    /*
-     * Advance the break to protect the loaded module.
-     */
-
-    (void) brk(startAddress + relocatedSize);
-
-    /*
-     * Seek to the start of the module's text.
-     *
-     * Note that this does not really work with large files (i.e. where
-     * lseek64 exists and is different to lseek), but anyone trying to
-     * dynamically load a binary that is larger than what can fit in
-     * addressable memory is in trouble anyway...
-     */
-
-#if defined(__mips) || defined(mips)
-    status = lseek(relocatedFd,
-	    (off_t) N_TXTOFF(relocatedHead.ex_f, relocatedHead.ex_o),
-	    SEEK_SET);
-#else
-    status = lseek(relocatedFd, (off_t) N_TXTOFF (relocatedHead), SEEK_SET);
-#endif
-    if (status < 0) {
-	goto ioError;
-    }
-
-    /*
-     * Read in the module's text and data.
-     */
-
-    relocatedSize = relocatedHead.a_text + relocatedHead.a_data;
-    if (read(relocatedFd, startAddress, relocatedSize) < relocatedSize) {
-	brk(startAddress);
-    ioError:
-	Tcl_AppendResult(interp, "error on intermediate file \"",
-		relocatedFileName, "\": ", Tcl_PosixError(interp),
-		(char *) NULL);
-    failure:
-	(void) unlink(relocatedFileName);
-	return TCL_ERROR;
-    }
-
-    /*
-     * Close the intermediate file.
-     */
-
-    (void) close(relocatedFd);
-
-    /*
-     * Arrange things so that intermediate symbol tables eventually get
-     * deleted.
-     */
-
-    if (SymbolTableFile != NULL) {
-	UnlinkSymbolTable();
-    } else {
-	atexit(UnlinkSymbolTable);
-    }
-    SymbolTableFile = ckalloc(strlen(relocatedFileName) + 1);
-    strcpy(SymbolTableFile, relocatedFileName);
-
-    *loadHandle = startAddress;
-    return TCL_OK;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpFindSymbol --
- *
- *	Looks up a symbol, by name, through a handle associated with a
- *	previously loaded piece of code (shared library).
- *
- * Results:
- *	Returns a pointer to the function associated with 'symbol' if it is
- *	found.  Otherwise returns NULL and may leave an error message in the
- *	interp's result.
- *
- *----------------------------------------------------------------------
- */
-Tcl_PackageInitProc*
-TclpFindSymbol(interp, loadHandle, symbol)
-    Tcl_Interp *interp;
-    Tcl_LoadHandle loadHandle;
-    CONST char *symbol;
-{
-    /*
-     * Look up the entry point in the load module's dictionary.
-     */
-
-    DictFn dictionary = (DictFn) loadHandle;
-
-    return (Tcl_PackageInitProc *) dictionary(sym1);
-}
-
-
-/*
- *------------------------------------------------------------------------
- *
- * FindLibraries --
- *
- *	Find the libraries needed to link a load module at run time.
- *
- * Results:
- *	A standard Tcl completion code. If an error occurs, an error message
- *	is left in the interp's result. The -l and -L flags are concatenated
- *	onto the dynamic string `buf'.
- *
- *------------------------------------------------------------------------
- */
-
-static int
-FindLibraries (interp, pathPtr, buf)
-    Tcl_Interp * interp;	/* Used for error reporting */
-    Tcl_Obj * pathPtr;		/* Name of the load module */
-    Tcl_DString * buf;		/* Buffer where the -l an -L flags */
-{
-    FILE * f;			/* The load module */
-    int c = 0;			/* Byte from the load module */
-    char * p;
-    CONST char *native;
-
-    char *fileName = Tcl_GetString(pathPtr);
-
-    /*
-     * Open the load module.
-     */
-
-    native = Tcl_FSGetNativePath(pathPtr);
-    f = fopen(native, "rb");				/* INTL: Native. */
-
-    if (f == NULL) {
-	Tcl_AppendResult(interp, "couldn't open \"", fileName, "\": ",
-		Tcl_PosixError(interp), (char *) NULL);
-	return TCL_ERROR;
-    }
-
-    /*
-     * Search for the library list in the load module.
-     */
-
-    p = "@LIBS: ";
-    while (*p != '\0' && (c = getc(f)) != EOF) {
-	if (c == *p) {
-	    ++p;
-	} else {
-	    p = "@LIBS: ";
-	    if (c == *p) {
-		++p;
-	    }
-	}
-    }
-
-    /*
-     * No library list -- this must be an ill-formed module.
-     */
-
-    if (c == EOF) {
-	Tcl_AppendResult(interp, "File \"", fileName,
-		"\" is not a Tcl load module.", (char *) NULL);
-	(void) fclose(f);
-	return TCL_ERROR;
-    }
-
-    /*
-     * Accumulate the library list.
-     */
-
-    while ((c = getc(f)) != '\0' && c != EOF) {
-	char cc = c;
-	Tcl_DStringAppend(buf, &cc, 1);
-    }
-    (void) fclose(f);
-
-    if (c == EOF) {
-	Tcl_AppendResult(interp, "Library directory in \"", fileName,
-		"\" ends prematurely.", (char *) NULL);
-	return TCL_ERROR;
-    }
-
-    return TCL_OK;
-}
-
-/*
- *------------------------------------------------------------------------
- *
- * UnlinkSymbolTable --
- *
- *	Remove the symbol table file from the last dynamic link.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	The symbol table file from the last dynamic link is removed.  This
- *	function is called when (a) a new symbol table is present because
- *	another dynamic link is complete, or (b) the process is exiting.
- *
- *------------------------------------------------------------------------
- */
-
-static void
-UnlinkSymbolTable()
-{
-    (void) unlink(SymbolTableFile);
-    ckfree(SymbolTableFile);
-    SymbolTableFile = NULL;
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * TclpUnloadFile --
- *
- *	Unloads a dynamically loaded binary code file from memory. Code
- *	pointers in the formerly loaded file are no longer valid after calling
- *	this function.
- *
- * Results:
- *	None.
- *
- * Side effects:
- *	Does nothing.  Can anything be done?
- *
- *----------------------------------------------------------------------
- */
-
-void
-TclpUnloadFile(loadHandle)
-    Tcl_LoadHandle loadHandle;	/* loadHandle returned by a previous call to
-				 * TclpDlopen().  The loadHandle is a token
-				 * that represents the loaded file. */
-{
-}
-
-/*
- *----------------------------------------------------------------------
- *
- * 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)
-    CONST 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. */
-{
-    CONST char *p, *q;
-    char *r;
-
-    if ((q = strrchr(fileName,'/'))) {
-	q++;
-    } else {
-	q = fileName;
-    }
-    if (!strncmp(q,"lib",3)) {
-	q+=3;
-    }
-    p = q;
-    while ((*p) && (*p != '.') && ((*p<'0') || (*p>'9'))) {
-	p++;
-    }
-    if ((p>q+2) && !strncmp(p-2,"_G0.",4)) {
-	p-=2;
-    }
-    if (p<q) {
-	return 0;
-    }
-
-    Tcl_DStringAppend(bufPtr,q, p-q);
-
-    r = Tcl_DStringValue(bufPtr);
-    r += strlen(r) - (p-q);
-
-    /*
-     * Capitalize the string and then recompute the length.
-     */
-
-    Tcl_UtfToTitle(r);
-    Tcl_DStringSetLength(bufPtr, strlen(Tcl_DStringValue(bufPtr)));
-
-    return 1;
-}
-
-/*
- * Local Variables:
- * mode: c
- * c-basic-offset: 4
- * fill-column: 78
- * End:
- */