Re: [PATCH 3/6] Get start and end address of main in dwz.exp

[Doug Evans <dje@google.com>]

Yao Qi writes:
 > On arm-none-eabi target thumb mode, I see the following fail,
 > 
 > p the_int^M
 > $2 = 99^M
 > (gdb) FAIL: gdb.dwarf2/dwz.exp: p the_int
 > 
 > and on powerpc64 target, we even can't get function main from object
 > file,
 > 
 > disassemble main^M
 > No function contains specified address.^M
 > (gdb) FAIL: gdb.dwarf2/dwz.exp: disassemble main
 > 
 > This patch is to use MACRO_AT_func attribute to get the main's start
 > address and end address correctly, and also remove some code dwz.exp
 > getting main's length.  This patch fixes fails on both thumb mode and
 > powerpc64 target.
 > 
 > PASS: gdb.dwarf2/dwz.exp: p other_int
 > PASS: gdb.dwarf2/dwz.exp: p the_int
 > 
 > gdb/testsuite:
 > 
 > 2014-10-24  Yao Qi  <yao@codesourcery.com>
 > 
 > 	* gdb.dwarf2/dwz.exp: Remove the code to compile main.c to
 > 	object and get function length.
 > 	(Dwarf::assemble): Replace name, low_pc and high_pc attributes
 > 	with MACRO_AT_func.
 > 	(top-level): Replace gdb_compile and clean_restart with
 > 	prepare_for_testing.
 > 	* gdb.dwarf2/main.c (main): Add label main_label.

LGTM