[RFA/testsuite] Add a test for add-symbol-file

[Daniel Jacobowitz <drow@mvista.com>]

add-symbol-file isn't covered anywhere in the testsuite, except for usage
messages (default.exp, help.exp) and in gdb.hp.  This adds some new tests
for it - one of which actually fails on PowerPC right now.  Patch coming in
a second.

Does this look OK?

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer

2002-04-04  Daniel Jacobowitz  <drow@mvista.com>

	* gdb.base/relocate.exp: New file.
	* gdb.base/relocate.c: New file.

--- /dev/null	Wed Dec 31 19:00:00 1969
+++ relocate.c	Thu Apr  4 16:27:13 2002
@@ -0,0 +1,17 @@
+static int static_foo = 1;
+static int static_bar = 2;
+
+int global_foo = 3;
+int global_bar = 4;
+
+int
+function_foo ()
+{
+  return 5;
+}
+
+int
+function_bar ()
+{
+  return 6;
+}
--- /dev/null	Wed Dec 31 19:00:00 1969
+++ relocate.exp	Thu Apr  4 16:32:06 2002
@@ -0,0 +1,108 @@
+# Copyright 2002 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
+
+# relocate.exp -- Expect script to test loading symbols from unrelocated
+#		  object files.
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+set testfile relocate
+set srcfile ${srcdir}/${subdir}/${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}.o
+
+remote_exec build "rm -f ${binfile}"
+if { [gdb_compile "${srcfile}" "${binfile}" object {debug}] != "" } {
+     gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+}
+
+proc get_var_address { var } {
+  global gdb_prompt hex
+
+  send_gdb "print &${var}\n"
+  # Match output like:
+  # $1 = (int *) 0x0
+  # $5 = (int (*)()) 0
+  # $6 = (int (*)()) 0x24 <function_bar>
+  gdb_expect {
+    -re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $"
+	{
+	  pass "get address of ${var}"
+	  if { $expect_out(1,string) == "0" } {
+	    return "0x0"
+	  } else {
+	    return $expect_out(1,string)
+	  }
+	}
+    -re "${gdb_prompt} $"
+	{ fail "get address of ${var} (unknown output)" }
+    timeout
+	{ fail "get address of ${var} (timeout)" }
+  }
+  return ""
+}
+
+
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+
+# Load the object file.
+gdb_test "add-symbol-file ${binfile} 0" \
+	"Reading symbols from .*${testfile}\\.o\\.\\.\\.done\\." \
+	"add-symbol-file ${testfile}.o 0" \
+	"add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x0\[\r\n\]+\\(y or n\\) " \
+	"y"
+
+# Print the addresses of static variables.
+set static_foo_addr [get_var_address static_foo]
+set static_bar_addr [get_var_address static_bar]
+
+# Make sure they have different addresses.
+if { "${static_foo_addr}" == "${static_bar_addr}" } {
+  fail "static variables have different addresses"
+} else {
+  pass "static variables have different addresses"
+}
+
+# Print the addresses of global variables.
+set global_foo_addr [get_var_address global_foo]
+set global_bar_addr [get_var_address global_bar]
+
+# Make sure they have different addresses.
+if { "${global_foo_addr}" == "${global_bar_addr}" } {
+  fail "global variables have different addresses"
+} else {
+  pass "global variables have different addresses"
+}
+
+# Print the addresses of functions.
+set function_foo_addr [get_var_address function_foo]
+set function_bar_addr [get_var_address function_bar]
+
+# Make sure they have different addresses.
+if { "${function_foo_addr}" == "${function_bar_addr}" } {
+  fail "functions have different addresses"
+} else {
+  pass "functions have different addresses"
+}
+
+return 0