[PATCH 5/6] Fix implptr-optimized-out.exp fail

[Yao Qi <yao@codesourcery.com>]

Hi,
I see the fail in gdb.dwarf2/implptr-optimized-out.exp in thumb mode

(gdb) p p->f^M
No symbol "p" in current context.^M
(gdb) FAIL: gdb.dwarf2/implptr-optimized-out.exp: p p->f

and the crash on powerpc64

(gdb) continue^M
Continuing.^M
^M
Program received signal SIGSEGV, Segmentation fault.^M
0x7d82100810000828 in ?? ()

The cause of both is that we incorrectly set attribute low_pc, since
main isn't resolved to function start address on these targets.

In this patch, we replace attributes name, low_pc and high_pc with
MACRO_AT_func.  The fail on thumb mode is fixed, and crash on
powerpc64 is fixed too.

gdb/testsuite:

2014-10-24  Yao Qi  <yao@codesourcery.com>

	* gdb.dwarf2/implptr-optimized-out.exp (Dwarf::assemble):
	Replace name, low_pc and high_pc with MACRO_AT_func.
---
 gdb/testsuite/gdb.dwarf2/implptr-optimized-out.exp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gdb/testsuite/gdb.dwarf2/implptr-optimized-out.exp b/gdb/testsuite/gdb.dwarf2/implptr-optimized-out.exp
index 226fc5c..dd9c517 100644
--- a/gdb/testsuite/gdb.dwarf2/implptr-optimized-out.exp
+++ b/gdb/testsuite/gdb.dwarf2/implptr-optimized-out.exp
@@ -25,6 +25,8 @@ set executable ${testfile}
 # Create the DWARF.
 set asm_file [standard_output_file $srcfile2]
 Dwarf::assemble $asm_file {
+    global srcdir subdir srcfile
+
     cu { version 3 addr_size 4 } {
 	compile_unit {
 	    {producer "GNU C 4.4.3"}
@@ -51,9 +53,7 @@ Dwarf::assemble $asm_file {
 	    }
 
 	    subprogram {
-		{name main}
-		{low_pc main addr}
-		{high_pc main+0x100 addr}
+		{MACRO_AT_func { main ${srcdir}/${subdir}/${srcfile} }}
 		{type :$int_label}
 		{external 1 flag}
 	    } {
-- 
1.9.3