From FEDORA_PATCHES Mon Sep 17 00:00:00 2001

From: Fedora GDB patches <invalid@email.com>

Date: Fri, 27 Oct 2017 21:07:50 +0200

Subject: gdb-6.3-bz140532-ppc-unwinding-test.patch

;; Update PPC unwinding patches to their upstream variants (BZ 140532).

;;=fedoratest

diff --git a/gdb/testsuite/gdb.arch/powerpc-bcl-prologue-asm32.S b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue-asm32.S

new file mode 100644

--- /dev/null

+++ b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue-asm32.S

@@ -0,0 +1,78 @@

+/* This testcase is part of GDB, the GNU debugger.

+

+   Copyright 2007 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. */

+

+	.section	".text"

+	.align 2

+	.globl func0

+	.type	func0, @function

+func0:

+	stwu 1,-16(1)

+	mflr 0

+	stw 31,12(1)

+	stw 0,20(1)

+	mr 31,1

+	bl abort

+	.size	func0, .-func0

+	.align 2

+	.globl func1

+	.type	func1, @function

+func1:

+	stwu 1,-16(1)

+	mflr 0

+/* 20 = BO = branch always

+   31 = BI = CR bit (ignored)  */

+	bcl 20,31,.Lpie

+.Lpie:	stw 31,12(1)

+	stw 0,20(1)

+	mr 31,1

+	bl func0

+	mr 0,3

+	lis 9,var@ha

+	lwz 9,var@l(9)

+	add 0,0,9

+	mr 3,0

+	lwz 11,0(1)

+	lwz 0,4(11)

+	mtlr 0

+	lwz 31,-4(11)

+	mr 1,11

+	blr

+	.size	func1, .-func1

+	.section	.note.GNU-stack,"",@progbits

+	.ident	"GCC: (GNU) 3.4.6 20060404 (Red Hat 3.4.6-8)"

+

+/* Original source file:

+

+#include <stdlib.h>

+

+extern volatile int var;

+

+int func0 (void) __attribute__((__noinline__));

+int func0 (void)

+{

+  abort ();

+  return var;

+}

+

+int func1 (void) __attribute__((__noinline__));

+int func1 (void)

+{

+  return func0 () + var;

+}

+

+*/

diff --git a/gdb/testsuite/gdb.arch/powerpc-bcl-prologue-asm64.S b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue-asm64.S

new file mode 100644

--- /dev/null

+++ b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue-asm64.S

@@ -0,0 +1,98 @@

+/* This testcase is part of GDB, the GNU debugger.

+

+   Copyright 2007 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. */

+

+	.section	".toc","aw"

+	.section	".text"

+	.align 2

+	.globl func0

+	.section	".opd","aw"

+	.align 3

+func0:

+	.quad	.L.func0,.TOC.@tocbase

+	.previous

+	.type	func0, @function

+.L.func0:

+	mflr 0

+	std 31,-8(1)

+	std 0,16(1)

+	stdu 1,-128(1)

+	mr 31,1

+	bl abort

+	nop

+	.long 0

+	.byte 0,0,0,1,128,1,0,1

+	.size	func0,.-.L.func0

+	.section	".toc","aw"

+.LC1:

+	.tc var[TC],var

+	.section	".text"

+	.align 2

+	.globl func1

+	.section	".opd","aw"

+	.align 3

+func1:

+	.quad	.L.func1,.TOC.@tocbase

+	.previous

+	.type	func1, @function

+.L.func1:

+	mflr 0

+/* 20 = BO = branch always

+   31 = BI = CR bit (ignored)  */

+	bcl 20,31,.Lpie

+.Lpie:	std 31,-8(1)

+	std 0,16(1)

+	stdu 1,-128(1)

+	mr 31,1

+	bl func0

+	mr 11,3

+	ld 9,.LC1@toc(2)

+	lwz 0,0(9)

+	add 0,11,0

+	extsw 0,0

+	mr 3,0

+	ld 1,0(1)

+	ld 0,16(1)

+	mtlr 0

+	ld 31,-8(1)

+	blr

+	.long 0

+	.byte 0,0,0,1,128,1,0,1

+	.size	func1,.-.L.func1

+	.section	.note.GNU-stack,"",@progbits

+	.ident	"GCC: (GNU) 3.4.6 20060404 (Red Hat 3.4.6-8)"

+

+/* Original source file:

+

+#include <stdlib.h>

+

+extern volatile int var;

+

+int func0 (void) __attribute__((__noinline__));

+int func0 (void)

+{

+  abort ();

+  return var;

+}

+

+int func1 (void) __attribute__((__noinline__));

+int func1 (void)

+{

+  return func0 () + var;

+}

+

+*/

diff --git a/gdb/testsuite/gdb.arch/powerpc-bcl-prologue.c b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue.c

new file mode 100644

--- /dev/null

+++ b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue.c

@@ -0,0 +1,29 @@

+/* This testcase is part of GDB, the GNU debugger.

+

+   Copyright 2007 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. */

+

+/* Force `-fpie' double jump bl->blrl.  */

+/* No longer used.  */

+volatile int var;

+

+extern int func1 (void);

+

+int main (void)

+{

+  func1 ();

+  return 0;

+}

diff --git a/gdb/testsuite/gdb.arch/powerpc-bcl-prologue.exp b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue.exp

new file mode 100644

--- /dev/null

+++ b/gdb/testsuite/gdb.arch/powerpc-bcl-prologue.exp

@@ -0,0 +1,72 @@

+#   Copyright 2006, 2007 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.

+

+# Test unwinding fixes of the PPC platform, specifically on the coping with BCL

+# jump of the PIE code.

+

+if ![istarget "powerpc*-*-linux*"] then {

+    verbose "Skipping powerpc-linux prologue tests."

+    return

+}

+

+set testfile "powerpc-bcl-prologue"

+set srcfile1 ${testfile}.c

+set flags "debug"

+if [istarget "powerpc-*"] then {

+    set srcfile2 ${testfile}-asm32.S

+    set flags "$flags additional_flags=-m32"

+} elseif [istarget "powerpc64-*"] then {

+    set srcfile2 ${testfile}-asm64.S

+    set flags "$flags additional_flags=-m64"

+} else {

+   fail "powerpc arch test"

+   return

+}

+set objfile2 [standard_output_file ${testfile}-asm.o]

+set binfile [standard_output_file ${testfile}]

+

+if { [gdb_compile "${srcdir}/${subdir}/${srcfile1} ${srcdir}/${subdir}/${srcfile2}" ${binfile} executable $flags] != ""} {

+    return -1

+}

+

+gdb_exit

+gdb_start

+gdb_reinitialize_dir $srcdir/$subdir

+gdb_load ${binfile}

+

+# We should stop in abort(3).

+

+gdb_run_cmd

+

+gdb_test_multiple {} "continue to abort()" {

+    -re ".*Program received signal SIGABRT,.*$gdb_prompt $" {

+       pass "continue to abort()"

+    }

+}

+

+# Check backtrace:

+# #3  0x0804835f in func0 ()

+# #4  0x0804836a in func1 ()

+# #5  0x0804838c in main ()

+# (gdb)

+# `\\.?' prefixes are needed for ppc64 without `debug' (another bug).

+

+set test "matching unwind"

+gdb_test_multiple "backtrace" $test {

+    -re "\r\n#\[0-9\]\[^\r\n\]* in \\.?func0 \\(\[^\r\n\]*\r\n#\[0-9\]\[^\r\n\]* in \\.?func1 \\(\[^\r\n\]*\r\n#\[0-9\]\[^\r\n\]* in \\.?main \\(\[^\r\n\]*\r\n$gdb_prompt $" {

+	pass $test

+    }

+}

diff --git a/gdb/testsuite/gdb.arch/powerpc-prologue.exp b/gdb/testsuite/gdb.arch/powerpc-prologue.exp

--- a/gdb/testsuite/gdb.arch/powerpc-prologue.exp

+++ b/gdb/testsuite/gdb.arch/powerpc-prologue.exp

@@ -16,8 +16,9 @@

 # Test PowerPC prologue analyzer.

 # Do not run on AIX (where we won't be able to build the tests without

-# some surgery) or on PowerPC64 (ditto, dot symbols).

-if {[istarget *-*-aix*] || ![istarget "powerpc-*-*"]} then {

+# some surgery).  PowerPC64 target would break due to dot symbols but we build

+# there PowerPC32 inferior.

+if {[istarget *-*-aix*] || ![istarget "powerpc*-*-*"]} then {

     verbose "Skipping PowerPC prologue tests."

     return

 }