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/*

 * Program to generate the so-thresh testcase,

 * including associated linked-against shared libraries.

 * Build as:

 *

 *        cc -g -o genso-thresh genso-thresh.c

 *

 * Invoke as:

 *

 *        genso-thresh

 *

 * It will put all the code in the current directory (".").

 *

 * A makefile can also be generated if the -makemake option is used.

 * To use the makefile:

 *

 *        make -f so-thresh.mk all

 *

 * The name of the application is

 *

 *        so-thresh

 *

 * (Revised from a program by John Bishop.  --rehrauer)

 */

#include <stdio.h>

#include <sys/stat.h>

#include <sys/fcntl.h>

int main (argc, argv)

int    argc;

char **argv;

{

#define NUMBER_OF_INT_VARS 1500

#define NUMBER_OF_LIBS 3

    int     lib_num = NUMBER_OF_LIBS;

    int     i;

    int     i2;

    FILE   *main_file;

    FILE   *lib_file;

    FILE   *make_file;

    FILE   *link_file;

    char  testcase_name [1000];

    char  linkfile_name [1000];

    char  makefile_name [1000];

    char  mainfile_name [1000];

    char    file_name[100];

    /*

     *        0123456789       <-- length of field

     *  "./fil0000000002.c";   <-- typical filename

     *   12345678901234567890  <-- length of string

     *           10        20

     *                     ^where null goes

     */

    char    file_name_core[100];

    /* Verify input.

    */

    if ((argc < 1) || (argc > 2) || (argv == NULL) ||

        ((argc == 2) && (strcmp (argv[1], "-makemake") != 0)))

      {

        printf ("** Syntax: %s [-makemake]\n", argv[0]);

        return;

      }

    if (strncmp (argv[0], "gen", 3) != 0)

      {

        printf ("** This tool expected to be named \"gen<something>\"\n");

        return;

      }

    strcpy (testcase_name, argv[0]+3);

    strcpy (linkfile_name, testcase_name);

    strcat (linkfile_name, ".lopt");

    link_file = fopen (linkfile_name, "w");

    fprintf (link_file, "# Linker options for %s test\n", testcase_name);

    /* Generate the makefile, if requested.

       */

    if (argc == 2)

      {

        strcpy (makefile_name, testcase_name);

        strcat (makefile_name, ".mk.new");

        make_file = fopen (makefile_name, "w");

        printf ("  Note: New makefile (%s) generated.\n", makefile_name);

        printf ("  May want to update existing makefile, if any.\n");

        fprintf (make_file, "# Generated automatically by %s\n", argv[0]);

        fprintf (make_file, "# Make file for %s test\n", testcase_name);

        fprintf (make_file, "\n");

        fprintf (make_file, "CFLAGS = +DA1.1 -g\n");

        fprintf (make_file, "\n");

        fprintf (make_file, "# This is how to build this generator.\n");

        fprintf (make_file, "%s.o: %s.c\n", argv[0], argv[0]);

        fprintf (make_file, "\t$(CC) $(CFLAGS) -o %s.o -c %s.c\n", argv[0], argv[0]);

        fprintf (make_file, "%s: %s.o\n", argv[0], argv[0]);

        fprintf (make_file, "\t$(CC) $(CFLAGS) -o %s %s.o\n", argv[0], argv[0]);

        fprintf (make_file, "\n");

        fprintf (make_file, "# This is how to run this generator.\n");

        fprintf (make_file, "# This target should be made before the 'all' target,\n");

        fprintf (make_file, "# to ensure that the shlib sources are all available.\n");

        fprintf (make_file, "require_shlibs: %s\n", argv[0]);

        for (i=0; i < lib_num; i++)

          {

            fprintf (make_file, "\tif ! [ -a lib%2.2d_%s.c ] ; then \\\n", i, testcase_name);

            fprintf (make_file, "\t  %s ; \\\n", argv[0]);

            fprintf (make_file, "\tfi\n");

          }

        fprintf (make_file, "\n");

        fprintf (make_file, "# This is how to build all the shlibs.\n");

        fprintf (make_file, "# Be sure to first make the require_shlibs target!\n");

        for (i=0; i < lib_num; i++)

          {

            fprintf (make_file, "lib%2.2d_%s.o: lib%2.2d_%s.c\n", i, testcase_name, i, testcase_name);

            fprintf (make_file, "\t$(CC) $(CFLAGS) +Z -o lib%2.2d_%s.o -c lib%2.2d_%s.c\n", i, testcase_name, i, testcase_name);

            fprintf (make_file, "lib%2.2d-%s.sl: lib%2.2d-%s.o\n", i, testcase_name, i, testcase_name);

            fprintf (make_file, "\t$(LD) $(LDFLAGS) -b -o lib%2.2d-%s.sl lib%2.2d-%s.o\n", i, testcase_name, i, testcase_name);

          }

        fprintf (make_file, "\n");

fprintf (make_file, "# For convenience, here's names for all pieces of all shlibs.\n");

        fprintf (make_file, "SHLIB_SOURCES = \\\n");

        for (i=0; i < lib_num-1; i++)

          fprintf (make_file, "\tlib%2.2d-%s.c \\\n", i, testcase_name);

        fprintf (make_file, "\tlib%2.2d-%s.c\n", lib_num-1, testcase_name);

        fprintf (make_file, "SHLIB_OBJECTS = $(SHLIB_SOURCES:.c=.o)\n");

        fprintf (make_file, "SHLIBS = $(SHLIB_SOURCES:.c=.sl)\n");

        fprintf (make_file, "SHLIB_NAMES = $(SHLIB_SOURCES:.c=)\n");

        fprintf (make_file, "EXECUTABLES = $(SHLIBS) %s %s\n", argv[0], testcase_name);

        fprintf (make_file, "OBJECT_FILES = $(SHLIB_OBJECTS) %s.o %s.o\n", argv[0], testcase_name);

        fprintf (make_file, "\n");

        fprintf (make_file, "shlib_objects: $(SHLIB_OBJECTS)\n");

        fprintf (make_file, "shlibs: $(SHLIBS)\n");

        fprintf (make_file, "\n");

        fprintf (make_file, "# This is how to build the debuggable testcase that uses the shlibs.\n");

        fprintf (make_file, "%s.o: %s.c\n", testcase_name, testcase_name);

        fprintf (make_file, "\t$(CC) $(CFLAGS) -o %s.o -c %s.c\n", testcase_name, testcase_name);

        fprintf (make_file, "%s: shlibs %s.o\n", testcase_name, testcase_name);

        fprintf (make_file, "\t$(LD) $(LDFLAGS) -o %s -lc -L. ", testcase_name);

        fprintf (make_file, "-c %s /opt/langtools/lib/end.o /lib/crt0.o %s.o\n", linkfile_name, testcase_name);

        fprintf (make_file, "\n");

        fprintf (make_file, "# Yeah, but you should first make the require_shlibs target!\n");

        fprintf (make_file, "all: %s %s\n", testcase_name, argv[0]);

        fprintf (make_file, "\n");

        fprintf (make_file, "# To remove everything built via this makefile...\n");

        fprintf (make_file, "clean:\n");

        /* Do this carefully, to avoid hitting silly HP-UX ARG_MAX limits... */

        fprintf (make_file, "\trm -f lib0*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib1*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib2*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib3*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib4*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib5*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib6*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib7*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib8*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f lib9*-%s.*\n", testcase_name);

        fprintf (make_file, "\trm -f %s %s %s %s.c\n", argv[0], testcase_name, linkfile_name, testcase_name);

        fprintf (make_file, "\n");

        fclose (make_file);

      }

    /* Generate the code for the libraries.

       */

    for (i=0; i < lib_num; i++) {

        /* Generate the names for the library.

         */

        sprintf (file_name, "lib%2.2d-%s.c", i, testcase_name);

        sprintf (file_name_core, "lib%2.2d-%s", i, testcase_name);

        /* Generate the source code.

         */

        lib_file = fopen (file_name, "w");

        fprintf (lib_file, "/* Shared library file number %d */\n", i);

        fprintf (lib_file, "#include <stdio.h>\n\n");

        fprintf (lib_file, "/* The following variables largely exist to bloat this library's debug info. */\n");

        fprintf (lib_file, "static char c_static_buf_%d [100];\n", i);

        for (i2=0; i2<NUMBER_OF_INT_VARS; i2++)

          fprintf (lib_file, "int i_%d_%d;\n", i, i2);

        fprintf (lib_file, "\nint r_%d ()\n", i);

        fprintf (lib_file, "{\n");

        for (i2=0; i2<NUMBER_OF_INT_VARS; i2++)

          fprintf (lib_file, "    i_%d_%d = %d*%d;\n", i, i2, i2, i2);

        fprintf (lib_file, "    return 1;\n");

        fprintf (lib_file, "}\n\n");

        fprintf (lib_file, "/* end of generated file */\n");

        fclose (lib_file);

        /* Add a linker options line

           */

        fprintf (link_file, "-l%2.2d-%s\n", i, testcase_name);

    }

    /* Generate the "main" file.

     */

    strcpy (mainfile_name, testcase_name);

    strcat (mainfile_name, ".c");

    main_file = fopen (mainfile_name, "w");

    fprintf (main_file, "/* Generated test progam with %d shared libraries. */\n\n",

             lib_num);

    fprintf (main_file, "#include <stdio.h>\n\n");

    for (i = 0; i < lib_num; i++) {

      fprintf (main_file, "extern int r_%d();\n", i);

    }

    fprintf (main_file, "\n");

    fprintf (main_file, "int main()\n");

    fprintf (main_file, "{\n");

    fprintf (main_file, "    int accum;\n");

    fprintf (main_file, "    int lib_num = %d;\n", lib_num);

    for (i = 0; i < lib_num; i++) {

      fprintf (main_file, "    accum += r_%d();\n", i);

    }

    fprintf (main_file, "    printf( \"Final value: %%d, should be %%d\\n\", accum, lib_num );\n\n");

    fprintf (main_file, "    return 0;\n");

    fprintf (main_file, "}\n\n");

    fprintf (main_file, "/* end of generated file */\n");

    fclose (main_file);

    /* Finish up the link file and the build file

     */

    fclose (link_file);

}

/* End of file */