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/*
* Program to generate the so-thresh testcase,
* including associated linked-against shared libraries.
* Build as:
*
* cc -g -o gen-so-thresh gen-so-thresh.c
*
* Invoke as:
*
* gen-so-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-", 4) != 0)
{
printf ("** This tool expected to be named \"gen-something\"\n");
return;
}
strcpy (testcase_name, argv[0]+4);
strcpy (linkfile_name, testcase_name);
strcat (linkfile_name, ".linkopts");
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 */
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