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Re: [RFA/testsuite/powerpc] New gdb.arch test for prologue analysis
Ping?
On Mon, Apr 19, 2004 at 04:58:35PM -0700, Joel Brobecker wrote:
> > Tested only on powerpc-aix, I can see :)
>
> ;-P
>
> > > asm (" .csect .text[PR]\n"
> > > " .align 2\n"
> > > " .lglobl .li_stw\n"
> > > " .csect li_stw[DS]\n"
> > > "li_stw:\n"
> > > " .long .li_stw, TOC[tc0], 0\n"
> > > " .csect .text[PR]\n"
> > > ".li_stw:\n"
> > > " stw 31,-4(1)\n"
> > > " stwu 1,-48(1)\n"
> > > " mr 31,1\n"
> > > " stw 11,24(31)\n"
> > > " li 0,8765\n"
> > > " stw 0,28(31)\n"
> > > " lwz 1,0(1)\n"
> > > " lwz 31,-4(1)\n"
> > > " blr\n");
> >
> > AIX functions look distinctly unlike other (32-bit) PowerPC functions,
> > because AIX uses function descriptors and powerpc-eabi/powerpc-linux/etc
> > do not. This is only valid for AIX.
>
> I knew it was too easy...
>
> > You should either find a way to make it work on both - unlikely to be
> > worth the trouble - or call this file something AIX specific.
>
> Here's a new version of the new files, where the files were renamed
> to include aix. I also changed the check at the begining of the testcase
> to only activate the test for powerpc-*-aix* targets.
>
> 2004-04-19 Joel Brobecker <brobecker@gnat.com>
>
> * gdb.arch/powerpc-aix-prologue.c: New file.
> * gdb.arch/powerpc-aix-prologue.exp: New file.
>
> 2004-04-19 Joel Brobecker <brobecker@gnat.com>
>
> * config/djgpp/fnchange.lst: Add translation rules for
> gdb.arch/powerpc-aix-prologue.c and gdb.arch/powerpc-aix-prologue.exp.
>
> --
> Joel
> /* This testcase is part of GDB, the GNU debugger.
>
> Copyright 2004 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 */
>
> void li_stw (void);
>
> int
> main (void)
> {
> li_stw ();
> return 0;
> }
>
> /* Asm for procedure li_stw().
>
> The purpose of this function is to verify that GDB does not
> include the li insn as part of the function prologue (only part
> of the prologue if part of a pair of insns saving vector registers).
> Similarly, GDB should not include the stw insn following the li insn,
> because the source register is not used for parameter passing. */
>
>
> asm (" .csect .text[PR]\n"
> " .align 2\n"
> " .lglobl .li_stw\n"
> " .csect li_stw[DS]\n"
> "li_stw:\n"
> " .long .li_stw, TOC[tc0], 0\n"
> " .csect .text[PR]\n"
> ".li_stw:\n"
> " stw 31,-4(1)\n"
> " stwu 1,-48(1)\n"
> " mr 31,1\n"
> " stw 11,24(31)\n"
> " li 0,8765\n"
> " stw 0,28(31)\n"
> " lwz 1,0(1)\n"
> " lwz 31,-4(1)\n"
> " blr\n");
>
> # Copyright 2004 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@gnu.org
> #
> # This file is part of the gdb testsuite.
>
> if $tracelevel {
> strace $tracelevel
> }
>
> # Test rs6000 prologue analyzer.
>
> set prms_id 0
> set bug_id 0
>
> if ![istarget "powerpc-*-aix*"] then {
> verbose "Skipping powerpc-aix prologue tests."
> return
> }
>
> set testfile "powerpc-aix-prologue"
> set srcfile ${testfile}.c
> set binfile ${objdir}/${subdir}/${testfile}
> if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
> unsupported "Testcase compile failed."
> return -1
> }
>
> gdb_exit
> gdb_start
> gdb_reinitialize_dir $srcdir/$subdir
> gdb_load ${binfile}
>
> # Insert a breakpoint in FUNCTION and verifies that the breakpoint was
> # inserted at the expected location. EXPECTED_LOCATION should be an
> # offset relative to the function start address.
> proc insert_breakpoint {function expected_location} {
> global gdb_prompt
> global expect_out
> global hex
>
> set address ""
>
> # Insert a breakpoint using the given function name, and extract
> # the breakpoint address for the output.
> gdb_test_multiple "break $function" "set breakpoint in $function" {
> -re "Breakpoint 1 at ($hex).*$gdb_prompt $" {
> set address $expect_out(1,string)
> }
> default {
> fail "set breakpoint in $function"
> }
> }
>
> # If we managed to get the breakpoing address, then check that
> # we inserted it at the expected location by examining the
> # instruction at that address (we're not interested in the insn
> # itself, but rather at the address printed at the begining of
> # the instruction).
> if { $address != "" } then {
> gdb_test "x /i $address" \
> ".*<$function\\+$expected_location>.*" \
> "check $function breakpoint address"
> } else {
> fail "unable to compute breakpoint address"
> }
>
> }
>
> insert_breakpoint "li_stw" 12
> Index: config/djgpp/fnchange.lst
> ===================================================================
> RCS file: /cvs/src/src/gdb/config/djgpp/fnchange.lst,v
> retrieving revision 1.69
> diff -u -r1.69 fnchange.lst
> --- config/djgpp/fnchange.lst 28 Feb 2004 18:01:48 -0000 1.69
> +++ config/djgpp/fnchange.lst 19 Apr 2004 23:52:26 -0000
> @@ -188,6 +188,8 @@
> @V@/gdb/testsuite/gdb.arch/altivec-abi.exp @V@/gdb/testsuite/gdb.arch/av-abi.exp
> @V@/gdb/testsuite/gdb.arch/altivec-regs.c @V@/gdb/testsuite/gdb.arch/av-regs.c
> @V@/gdb/testsuite/gdb.arch/altivec-regs.exp @V@/gdb/testsuite/gdb.arch/av-regs.exp
> +@V@/gdb/testsuite/gdb.arch/powerpc-aix-prologue.exp @V@/gdb/testsuite/gdb.arch/ppcaprol.exp
> +@V@/gdb/testsuite/gdb.arch/powerpc-aix-prologue.c @V@/gdb/testsuite/gdb.arch/ppcaprol.c
> @V@/gdb/testsuite/gdb.base/coremaker2.c @V@/gdb/testsuite/gdb.base/core2maker.c
> @V@/gdb/testsuite/gdb.cp/m-static1.cc @V@/gdb/testsuite/gdb.cp/m-stat1.cc
> @V@/gdb/testsuite/gdb.cp/namespace1.cc @V@/gdb/testsuite/gdb.cp/namesp1.cc
--
Joel