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https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=230000
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The original testcase
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https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=230000#c1
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requires too recent GCC.
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Index: gdb-7.5.50.20130215/gdb/testsuite/gdb.arch/powerpc-power6.exp
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.5.50.20130215/gdb/testsuite/gdb.arch/powerpc-power6.exp 2013-02-25 14:31:06.658827177 +0100
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@@ -0,0 +1,54 @@
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+# Copyright 2007 Free Software Foundation, Inc.
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+
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program; if not, write to the Free Software
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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+
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+# Test PowerPC Power6 instructions disassembly.
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+
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+if {![istarget "powerpc*-*-*"]} then {
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+ verbose "Skipping PowerPC Power6 instructions disassembly."
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+ return
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+}
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+
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+set testfile "powerpc-power6"
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+set srcfile ${testfile}.s
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+set objfile ${objdir}/${subdir}/${testfile}.o
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+
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+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${objfile}" object {debug}] != "" } {
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+ untested "PowerPC prologue tests"
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+ return -1
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+}
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+
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+
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+gdb_exit
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+gdb_start
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+gdb_reinitialize_dir $srcdir/$subdir
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+gdb_load ${objfile}
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+
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+# Disassemble the function.
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+
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+gdb_test "disass func" ":\tblr\r\n.*" "Basic disassembly"
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+
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+gdb_test "disass func" ":\tdcbzl *r8,r9\r\n.*" "Power5 disassembly dcbzl"
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+gdb_test "disass func" ":\tfrsqrtes *f10,f11\r\n.*" "Power5 disassembly frsqrtes"
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+gdb_test "disass func" ":\tdadd *f1,f2,f1\r\n.*" "Power6 disassembly dadd"
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+gdb_test "disass func" ":\tdaddq *f0,f2,f0\r\n.*" "Power6 disassembly daddq"
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+gdb_test "disass func" ":\tdsub *f1,f2,f1\r\n.*" "Power6 disassembly dsub"
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+gdb_test "disass func" ":\tdsubq *f0,f2,f0\r\n.*" "Power6 disassembly dsubq"
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+gdb_test "disass func" ":\tdmul *f1,f2,f1\r\n.*" "Power6 disassembly dmul"
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+gdb_test "disass func" ":\tdmulq *f0,f2,f0\r\n.*" "Power6 disassembly dmulq"
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+gdb_test "disass func" ":\tddiv *f1,f2,f1\r\n.*" "Power6 disassembly ddiv"
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+gdb_test "disass func" ":\tddivq *f0,f2,f0\r\n.*" "Power6 disassembly ddivq"
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+gdb_test "disass func" ":\tdcmpu *cr1,f2,f1\r\n.*" "Power6 disassembly dcmpu"
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+gdb_test "disass func" ":\tdcmpuq *cr1,f2,f0\r\n.*" "Power6 disassembly dcmpuq"
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Index: gdb-7.5.50.20130215/gdb/testsuite/gdb.arch/powerpc-power6.s
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===================================================================
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--- /dev/null 1970-01-01 00:00:00.000000000 +0000
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+++ gdb-7.5.50.20130215/gdb/testsuite/gdb.arch/powerpc-power6.s 2013-02-25 14:31:06.659827178 +0100
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@@ -0,0 +1,16 @@
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+ .text
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+ .globl func
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+func:
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+ blr
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+ .long 0x7c284fec /* dcbzl r8,r9 */
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+ .long 0xed405834 /* frsqrtes f10,f11 */
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+ .long 0xec220804 /* dadd f1,f2,f1 */
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+ .long 0xfc020004 /* daddq f0,f2,f0 */
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+ .long 0xec220c04 /* dsub f1,f2,f1 */
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+ .long 0xfc020404 /* dsubq f0,f2,f0 */
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+ .long 0xec220844 /* dmul f1,f2,f1 */
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+ .long 0xfc020044 /* dmulq f0,f2,f0 */
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+ .long 0xec220c44 /* ddiv f1,f2,f1 */
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+ .long 0xfc020444 /* ddivq f0,f2,f0 */
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+ .long 0xec820d04 /* dcmpu cr1,f2,f1 */
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+ .long 0xfc820504 /* dcmpuq cr1,f2,f0 */
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