new files -- part of HP merge project.

5 files changed, 679 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/gen_solib_threshold.c b/gdb/testsuite/gdb.base/gen_solib_threshold.c
new file mode 100644
index 0000000..d8352f9
--- /dev/null
+++ b/gdb/testsuite/gdb.base/gen_solib_threshold.c
@@ -0,0 +1,229 @@
+/*
+ * Program to generate the auto_solib_add_threshhold testcase,
+ * including associated linked-against shared libraries.
+ * Build as:
+ *
+ *        cc -g -o gen_auto_solib_add_threshhold gen_auto_solib_add_threshhold.c
+ *
+ * Invoke as:
+ *
+ *        gen_auto_solib_add_threshhold
+ *
+ * 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 auto_solib_add_threshhold.mk all
+ *
+ * The name of the application is
+ *
+ *        auto_solib_add_threshhold
+ *
+ * (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, ".link_opts");
+    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 */
diff --git a/gdb/testsuite/gdb.base/solib_threshold.build b/gdb/testsuite/gdb.base/solib_threshold.build
new file mode 100755
index 0000000..e95478d
--- /dev/null
+++ b/gdb/testsuite/gdb.base/solib_threshold.build
@@ -0,0 +1,12 @@
+#!/bin/ksh
+#
+# This script is a "wrapper" to use the auto_solib_add_threshold.mk
+# Makefile.  See the comments in auto_solib_add_threshold.exp
+# regarding why this script exists.
+#
+
+#set -o xtrace
+#set -o verbose
+
+MAKEFLAGS=
+make -f solib_threshold.mk require_shlibs all
diff --git a/gdb/testsuite/gdb.base/solib_threshold.exp b/gdb/testsuite/gdb.base/solib_threshold.exp
new file mode 100644
index 0000000..33abcfd
--- /dev/null
+++ b/gdb/testsuite/gdb.base/solib_threshold.exp
@@ -0,0 +1,361 @@
+#   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@prep.ai.mit.edu
+
+if $tracelevel then {
+	strace $tracelevel
+	}
+
+set prms_id 0
+set bug_id 0
+
+# are we on a target board
+if ![isnative] then {
+    return
+}
+
+set testfile "solib_threshold"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+if [get_compiler_info ${binfile}] {
+    return -1
+}
+
+# This testcase is automatically generated, via the
+# gen_solib_threshold program, which also should
+# live in this same directory.
+#
+# The generator produces:
+#   - solib_threshhold.c
+#   - 3 .c files named solib_threshold_libXX.c
+#   - a makefile named solib_threshold.mk with a
+#     target named "solib_threshold" that will compile
+#     and link the testcase
+#
+# Making with solib_threshold.mk produces:
+#   - solib_threshold
+#   - 3 shared libraries that are linked against, named
+#     solib_threshhold_libXX.sl
+#
+# We build gen_solib_threshhold, run it, and then make with
+# the makefile it produces.
+#
+set genfile gen_${testfile}
+set gen_srcfile ${genfile}.c
+set gen_binfile ${genfile}
+set gen_makefile ${testfile}.mk
+
+# This testcase is relatively large, and therefore can take awhile to
+# load.  We'd best set the timeout to something suitable, or we may
+# seem to fail...
+#
+set timeout 60
+
+# It's easiest to build and run the testcase in this directory.  (Linking
+# against shlibs puts relative paths to them in the a.out, so it's best
+# if we remain in this directory for the entire test run.)
+#
+#cd gdb.base
+
+# Ensure that the testcase is built.  This may cause the generator to
+# be built & run.
+#
+# Warning!  The final link of this testcase is not for the
+# faint-hearted nor under-disked machine!
+#
+# ??rehrauer: I tried for a very long time to get make invoked
+# directly here, rather than invoking a script to do it.  I
+# finally gave up in frustration; I'm not sure why it wouldn't
+# work that way, but this method DOES work, albeit clumsily.
+#
+
+send_user "Making with ${testfile}.mk ...\n"
+remote_exec build "sh -c \\\"cd ${objdir}/${subdir}\\; make -f ${srcdir}/${subdir}/${testfile}.mk clean require_shlibs all SRCDIR=${srcdir}/${subdir} OBJDIR=${objdir}/${subdir}\\\""
+
+# Only HP-UX (and any other platforms using SOM shared libraries, I
+# guess) interprets the auto-solib-add variable as a threshhold,
+# rather than a boolean that strictly enables or disables automatic
+# loading of shlib symbol tables.
+#
+# On HP-UX, it is the size threshhold (in megabytes) at which to
+# stop auto loading of symbol tables.
+#
+if ![istarget "hppa*-hp-hpux*"] then {
+   setup_xfail "*-*-*"
+}
+
+# Start with a fresh gdb
+#
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+# This is a test of gdb's ability on HP-UX to stop automatically
+# loading symbols of shared libraries, when the total size of the
+# debugger's symbol table reaches a specified threshhold.
+#
+
+# On HP-UX, the help text for auto-solib-add mentions that it
+# serves as a threshhold.
+#
+send_gdb "help set auto-solib-add\n"
+gdb_expect {
+  -re "Set autoloading size threshold .in megabytes. of shared library symbols.*
+If nonzero, symbols from all shared object libraries will be loaded.*
+automatically when the inferior begins execution or when the dynamic linker.*
+informs gdb that a new library has been loaded, until the symbol table.*
+of the program and libraries exceeds this threshold.*
+Otherwise, symbols must be loaded manually, using `sharedlibrary'.*$gdb_prompt $"\
+          {pass "help set auto-solib-add"}
+  -re "$gdb_prompt $"\
+          {fail "help set auto-solib-add"}
+  timeout {fail "(timeout) help set auto-solib-add"}
+}
+
+# On HP-UX, the threshhold is by default set to 50, which means
+# 50 megabytes.
+#
+send_gdb "show auto-solib-add\n"
+gdb_expect {
+  -re "Autoloading size threshold .in megabytes. of shared library symbols is 100.*$gdb_prompt $"\
+          {pass "show auto-solib-add (default is 100)"}
+  -re "$gdb_prompt $"\
+          {fail "show auto-solib-add (default is 100)"}
+  timeout {fail "(timeout) show auto-solib-add (default is 100)"}
+}
+
+send_gdb "set auto-solib-add 1\n"
+gdb_expect {
+   -re ".*$gdb_prompt $"
+            {pass "set auto-solib-add to 1"}
+   -re ".*$gdb_prompt $"
+            {fail "set auto-solib-add to 1"}
+   timeout {fail "(timeout) set auto-solib-add to 1"}
+}
+
+
+# We have manually verified that our testcase exceeds 1 Mbytes
+# of heap space in GDB to hold the symbols for the main program
+# and all associated linked-against libraries.  Thus, when we
+# run to the program's main, and therefore notice all the linked-
+# against shlibs, we expect to hit the threshhold.
+#
+# (Note that we're not using the expect [runto main] function here,
+# 'cause we want to match on output from the run command.
+#
+send_gdb "break main\n"
+gdb_expect {
+  -re "Breakpoint \[0-9\]* at.*$gdb_prompt $"\
+          {pass "set break at main"}
+  -re "$gdb_prompt $"\
+          {fail "set break at main"}
+  timeout {fail "(timeout) set break at main"}
+}
+
+send_gdb "run\n"
+gdb_expect {
+  -re ".*warning. Symbols for some libraries have not been loaded, because.*
+doing so would exceed the size threshold specified by auto-solib-add.*
+To manually load symbols, use the 'sharedlibrary' command.*
+To raise the threshold, set auto-solib-add to a larger value and rerun.*
+the program.*$gdb_prompt $"\
+          {pass "run to main hit auto-solib-add threshold"}
+  -re "$gdb_prompt $"\
+          {fail "run to main hit auto-solib-add threshold"}
+  timeout {fail "(timeout) run to main hit auto-solib-add threshold"}
+}
+
+# Verify that "info share" mentions something about libraries whose
+# symbols weren't loaded.
+#
+# We'll assume that at least the last two shlib's symbols weren't
+# loaded.  As a side-effect of matching this pattern, the text start
+# address of the last one is captured in expect_out(1,string).
+# (we'll need it for the 'add-symbol-file' command in a nonce...)
+#
+send_gdb "info sharedlibrary\n"
+gdb_expect {
+  -re ".*lib01_$testfile.sl .*symbols not loaded.*0x\[0-9\]*  (0x\[0-9a-fA-F\]*).*$gdb_prompt $"\
+          { send_gdb "add-symbol-file lib02_$testfile.sl $expect_out(1,string)\n"
+            gdb_expect {
+              -re "add symbol table.*y or n.*$"\
+                      {send_gdb "y\n"
+                       gdb_expect {
+                         -re "$gdb_prompt $" {pass "add-symbol-file and info sharedlib"}
+                         timeout {fail "(timeout) add-symbol-file and info sharedlib"}
+                       }}
+              -re "$gdb_prompt $"\
+                      {fail "add-symbol-file and info sharedlib"}
+              timeout {fail "(timeout) add-symbol-file and info sharedlib"}
+            }
+          }
+  -re "$gdb_prompt $"\
+          {fail "info sharedlibrary shows shlibs with unloaded symbols"}
+  timeout {fail "(timeout) info sharedlibrary shows shlibs with unloaded symbols"}
+}
+
+# Verify that we can manually load the symbol table of a library
+# whose symbols weren't loaded.  (We'll pick the last one.)
+#
+
+# I moved this test inside the one above, because the expect_out array is not ok if the
+# previous test has failed, and expect would error out (elz)
+#
+#send_gdb "add-symbol-file lib02_$testfile.sl $expect_out(1,string)\n"
+#gdb_expect {
+#  -re "add symbol table.*y or n.*$"\
+#          {send_gdb "y\n"
+#           gdb_expect {
+#             -re "$gdb_prompt $" {pass "add-symbol-file"}
+#             timeout {fail "(timeout) add-symbol-file"}
+#           }}
+#  -re "$gdb_prompt $"\
+#          {fail "add-symbol-file"}
+#  timeout {fail "(timeout) add-symbol-file"}
+#}
+
+# Verify that we can manually load the symbols for all libraries
+# which weren't already loaded.
+#
+# Warning!  On a machine with little free swap space, this may
+# fail!
+#
+send_gdb "sharedlibrary\n"
+gdb_expect {
+  -re "Reading symbols from.*done.*$gdb_prompt $"\
+          {pass "sharedlibrary"}
+  -re "$gdb_prompt $"\
+          {fail "sharedlibrary"}
+  timeout {fail "(timeout) sharedlibrary"}
+}
+
+# Rerun the program, this time verifying that we can set the
+# threshhold high enough to avoid hitting it.
+#
+# It appears that gdb isn't freeing memory when rerunning, as one
+# would expect.  To avoid potentially hitting a virtual memory
+# ceiling, start with a fresh gdb.
+#
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+send_gdb "break main\n"
+gdb_expect {
+  -re "Breakpoint \[0-9\]* at.*$gdb_prompt $"\
+          {pass "set break at main"}
+  -re "$gdb_prompt $"\
+          {fail "set break at main"}
+  timeout {fail "(timeout) set break at main"}
+}
+
+send_gdb "set auto-solib-add 9999\n"
+gdb_expect {
+  -re "$gdb_prompt $"\
+          {pass "set auto-solib-add threshold to practical infinity"}
+  timeout {fail "(timeout) set auto-solib-add threshold to practical infinity"}
+}
+send_gdb "run\n"
+gdb_expect {
+  -re ".*warning. Symbols for some libraries have not been loaded, because.*
+doing so would exceed the size threshold specified by auto-solib-add.*
+To manually load symbols, use the 'sharedlibrary' command.*
+To raise the threshold, set auto-solib-add to a larger value and rerun.*
+the program.*$gdb_prompt $"\
+          {fail "rerun threshold at practical infinity (still hit threshold)"}
+  -re "$gdb_prompt $"\
+          {pass "rerun with threshold at practical infinity"}
+  timeout {fail "(timeout) rerun with threshold at practical infinity"}
+}
+
+# Rerun the program, this time altogether disabling the auto loading
+# feature.  There should be no information at all about shared
+# libraries now.
+#
+# ??rehrauer: Personally, I'd call that a bug, since it doesn't give
+# you the ability to manually load single shlibs (you need the text
+# start address that 'info share' normall gives you).  On the other
+# hand, one can easily choose to load them all...
+#
+# It appears that gdb isn't freeing memory when rerunning, as one
+# would expect.  To avoid potentially hitting a virtual memory
+# ceiling, start with a fresh gdb.
+#
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+
+send_gdb "break main\n"
+gdb_expect {
+  -re "Breakpoint \[0-9\]* at.*$gdb_prompt $"\
+          {pass "set break at main"}
+  -re "$gdb_prompt $"\
+          {fail "set break at main"}
+  timeout {fail "(timeout) set break at main"}
+}
+
+send_gdb "set auto-solib-add 0\n"
+gdb_expect {
+  -re "$gdb_prompt $"\
+          {pass "set auto-solib-add threshold to 0"}
+  timeout {fail "(timeout) set auto-solib-add threshold to 0"}
+}
+send_gdb "run\n"
+gdb_expect {
+  -re ".*warning. Symbols for some libraries have not been loaded, because.*
+doing so would exceed the size threshold specified by auto-solib-add.*
+To manually load symbols, use the 'sharedlibrary' command.*
+To raise the threshold, set auto-solib-add to a larger value and rerun.*
+the program.*$gdb_prompt $"\
+          {fail "rerun threshold at 0 (still hit threshold)"}
+  -re "$gdb_prompt $"\
+          {pass "rerun with threshold at 0"}
+  timeout {fail "(timeout) rerun with threshold at 0"}
+}
+
+# Verify that we can still manually load symbols for all libraries.
+# (We'll assume that if the last shlib's symbols are loaded, that
+# all of them were.)
+#
+# Note that we set the GDB "height" variable to prevent GDB from
+# prompting 
+#
+# Warning!  On a machine with little free swap space, this may
+# fail!
+#
+send_gdb "set height 9999\n"
+gdb_expect {
+  -re "$gdb_prompt $"\
+          {pass "set screen page height to practical infinity"}
+  timeout {fail "(timeout) set screen page height to practical infinity"}
+}
+send_gdb "sharedlibrary\n"
+gdb_expect {
+  -re ".*Reading symbols from .*/lib02_solib_threshold\\.sl\\.\\.\\.done\\..*$gdb_prompt $"\
+          {pass "manually load all symbols"}
+  -re "$gdb_prompt $"\
+          {fail "manually load all symbols"}
+  timeout {fail "(timeout) manually load all symbols"}
+}
+
+#cd ..
+return 0
diff --git a/gdb/testsuite/gdb.base/solib_threshold.link_opts b/gdb/testsuite/gdb.base/solib_threshold.link_opts
new file mode 100644
index 0000000..bbf874a
--- /dev/null
+++ b/gdb/testsuite/gdb.base/solib_threshold.link_opts
@@ -0,0 +1,4 @@
+# Linker options for solib_threshold test
+-l00_solib_threshold
+-l01_solib_threshold
+-l02_solib_threshold
diff --git a/gdb/testsuite/gdb.base/solib_threshold.mk b/gdb/testsuite/gdb.base/solib_threshold.mk
new file mode 100644
index 0000000..83a6956
--- /dev/null
+++ b/gdb/testsuite/gdb.base/solib_threshold.mk
@@ -0,0 +1,73 @@
+# Make file for solib_threshold test
+
+OBJDIR=.
+SRCDIR=.
+CFLAGS = +DA1.1 -g
+
+# This is how to build this generator.
+gen_solib_threshold.o: ${SRCDIR}/gen_solib_threshold.c
+	$(CC) $(CFLAGS) -o gen_solib_threshold.o -c ${SRCDIR}/gen_solib_threshold.c
+gen_solib_threshold: gen_solib_threshold.o
+	$(CC) $(CFLAGS) -o gen_solib_threshold gen_solib_threshold.o
+
+# This is how to run this generator.
+# This target should be made before the 'all' target,
+# to ensure that the shlib sources are all available.
+require_shlibs: gen_solib_threshold
+	if ! [ -a lib00_solib_threshold.c ] ; then \
+	  gen_solib_threshold ; \
+	fi
+	if ! [ -a lib01_solib_threshold.c ] ; then \
+	  gen_solib_threshold ; \
+	fi
+	if ! [ -a lib02_solib_threshold.c ] ; then \
+	  gen_solib_threshold ; \
+	fi
+
+# This is how to build all the shlibs.
+# Be sure to first make the require_shlibs target!
+lib00_solib_threshold.o: lib00_solib_threshold.c
+	$(CC) $(CFLAGS) +Z -o lib00_solib_threshold.o -c lib00_solib_threshold.c
+lib00_solib_threshold.sl: lib00_solib_threshold.o
+	$(LD) $(LDFLAGS) -b -o lib00_solib_threshold.sl lib00_solib_threshold.o
+lib01_solib_threshold.o: lib01_solib_threshold.c
+	$(CC) $(CFLAGS) +Z -o lib01_solib_threshold.o -c lib01_solib_threshold.c
+lib01_solib_threshold.sl: lib01_solib_threshold.o
+	$(LD) $(LDFLAGS) -b -o lib01_solib_threshold.sl lib01_solib_threshold.o
+lib02_solib_threshold.o: lib02_solib_threshold.c
+	$(CC) $(CFLAGS) +Z -o lib02_solib_threshold.o -c lib02_solib_threshold.c
+lib02_solib_threshold.sl: lib02_solib_threshold.o
+	$(LD) $(LDFLAGS) -b -o lib02_solib_threshold.sl lib02_solib_threshold.o
+
+
+
+
+# For convenience, here's names for all pieces of all shlibs.
+SHLIB_SOURCES = \
+	lib00_solib_threshold.c \
+	lib01_solib_threshold.c \
+	lib02_solib_threshold.c 
+
+SHLIB_OBJECTS = $(SHLIB_SOURCES:.c=.o)
+SHLIBS = $(SHLIB_SOURCES:.c=.sl)
+SHLIB_NAMES = $(SHLIB_SOURCES:.c=)
+EXECUTABLES = $(SHLIBS) gen_solib_threshold solib_threshold
+OBJECT_FILES = $(SHLIB_OBJECTS) gen_solib_threshold.o solib_threshold.o
+
+shlib_objects: $(SHLIB_OBJECTS)
+shlibs: $(SHLIBS)
+
+# This is how to build the debuggable testcase that uses the shlibs.
+solib_threshold.o: solib_threshold.c
+	$(CC) $(CFLAGS) -o solib_threshold.o -c solib_threshold.c
+solib_threshold: shlibs solib_threshold.o
+	$(LD) $(LDFLAGS) -o solib_threshold -lc -L${OBJDIR} -c solib_threshold.link_opts /opt/langtools/lib/end.o /lib/crt0.o solib_threshold.o
+
+# Yeah, but you should first make the require_shlibs target!
+all: solib_threshold gen_solib_threshold
+
+# To remove everything built via this makefile...
+clean:
+	rm -f lib0*_solib_threshold.*
+	rm -f *.o gen_solib_threshold solib_threshold.link_opts solib_threshold.c
+	rm -f solib_threshold