[RFA/testsuite/powerpc] New gdb.arch test for prologue analysis
Joel Brobecker
brobecker@gnat.com
Mon Apr 19 23:58:00 GMT 2004
> 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
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/* 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");
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# 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
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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
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