Share proc get_var_address

This patch moves proc get_var_address into lib/gdb.exp, and remove the
duplicate copy in gdb.base/*.exp files.

gdb/testsuite:

2016-10-13  Yao Qi  <yao.qi@linaro.org>

	* gdb.base/code_elim.exp (get_var_address): Remove.
	* gdb.base/relocate.exp: Likewise.
	* gdb.base/shreloc.exp: Likewise.
	* lib/gdb.exp (get_var_address): New.

gdb/testsuite/ChangeLog

@@ -1,3 +1,10 @@
+2016-10-13  Yao Qi  <yao.qi@linaro.org>
+
+	* gdb.base/code_elim.exp (get_var_address): Remove.
+	* gdb.base/relocate.exp: Likewise.
+	* gdb.base/shreloc.exp: Likewise.
+	* lib/gdb.exp (get_var_address): New.
+
 2016-10-13  Yao Qi  <yao.qi@linaro.org>
 
 	* gdb.base/structs.exp: Invoke gdb_skip_float_test, and do

gdb/testsuite/gdb.base/code_elim.exp

@@ -41,27 +41,6 @@ if { [gdb_compile "${srcdir}/${subdir}/${srcfile2}" "${binfile2}" executable $op
      return -1
 }
 
-proc get_var_address { var } {
-    global gdb_prompt hex
-
-    # Match output like:
-    # $1 = (int *) 0x0
-    # $5 = (int (*)()) 0
-    # $6 = (int (*)()) 0x24 <function_bar>
-
-    gdb_test_multiple "print &${var}" "get address of ${var}" {
-	-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)
-	    }
-	}
-    }
-    return ""
-}
-
 proc not_null_var_address { var } {
 
     # Same as get_var_address, expect that it reports a failure if a null

gdb/testsuite/gdb.base/relocate.exp

@@ -25,29 +25,6 @@ if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {debug}]
      return -1
 }
 
-proc get_var_address { var } {
-    global gdb_prompt hex
-
-    # Match output like:
-    # $1 = (int *) 0x0
-    # $5 = (int (*)()) 0
-    # $6 = (int (*)()) 0x24 <function_bar>
-
-    gdb_test_multiple "print &${var}" "get address of ${var}" {
-	-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)
-	    }
-	}
-    }
-    return ""
-}
-
-
-
 gdb_exit
 gdb_start
 gdb_reinitialize_dir $srcdir/$subdir

gdb/testsuite/gdb.base/shreloc.exp

@@ -81,28 +81,6 @@ if ![runto_main] then {
     return 0
 }
 
-proc get_var_address { var } {
-    global gdb_prompt hex
-
-    # Match output like:
-    # $1 = (int *) 0x0
-    # $5 = (int (*)()) 0
-    # $6 = (int (*)()) 0x24 <function_bar>
-
-    gdb_test_multiple "print &${var}" "get address of ${var}" {
-	-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)
-	    }
-	}
-    }
-    return ""
-}
-
 #
 # Check debugging symbol relocations
 #

gdb/testsuite/lib/gdb.exp

@@ -5586,6 +5586,30 @@ proc get_target_charset { } {
     return "UTF-8"
 }
 
+# Get the address of VAR.
+
+proc get_var_address { var } {
+    global gdb_prompt hex
+
+    # Match output like:
+    # $1 = (int *) 0x0
+    # $5 = (int (*)()) 0
+    # $6 = (int (*)()) 0x24 <function_bar>
+
+    gdb_test_multiple "print &${var}" "get address of ${var}" {
+	-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)
+	    }
+	}
+    }
+    return ""
+}
+
 # Get the current value for remotetimeout and return it.
 proc get_remotetimeout { } {
     global gdb_prompt