RFA: Testcase for E500 prologue analysis

RFA: Testcase for E500 prologue analysis

[Jim Blandy]

2004-05-14  Jim Blandy  <jimb@redhat.com>

	* gdb.arch/e500-prologue.exp, gdb.arch/e500-prologue.c: New tests.

Index: gdb/testsuite/gdb.arch/e500-prologue.c
===================================================================
RCS file: gdb/testsuite/gdb.arch/e500-prologue.c
diff -N gdb/testsuite/gdb.arch/e500-prologue.c
*** /dev/null	1 Jan 1970 00:00:00 -0000
--- gdb/testsuite/gdb.arch/e500-prologue.c	14 May 2004 22:22:00 -0000
***************
*** 0 ****
--- 1,54 ----
+ /* 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.  */
+ 
+ void arg_passing_test2 (void);
+ 
+ int
+ main (void)
+ {
+   arg_passing_test2 ();
+   return 0;
+ }
+ 
+ 
+ /* Asm for procedure arg_passing_test2.
+ 
+    The challenge here is getting past the 'mr 0,3' and 'stb'
+    instructions.  */
+ 
+ asm ("	.section	\".text\""
+      "	.align 2\n"
+      "	.globl arg_passing_test2\n"
+      "	.type	arg_passing_test2, @function\n"
+      "arg_passing_test2:\n"
+      "	stwu 1,-64(1)\n"
+      "	stw 31,60(1)\n"
+      "	mr 31,1\n"
+      "	mr 0,3\n"
+      "	evstdd 4,16(31)\n"
+      "	stw 5,24(31)\n"
+      "	stw 7,32(31)\n"
+      "	stw 8,36(31)\n"
+      "	stw 9,40(31)\n"
+      "	stb 0,8(31)\n"
+      "	lwz 11,0(1)\n"
+      "	lwz 31,-4(11)\n"
+      "	mr 1,11\n"
+      "	blr\n"
+      "	.size	arg_passing_test2, .-arg_passing_test2\n");
Index: gdb/testsuite/gdb.arch/e500-prologue.exp
===================================================================
RCS file: gdb/testsuite/gdb.arch/e500-prologue.exp
diff -N gdb/testsuite/gdb.arch/e500-prologue.exp
*** /dev/null	1 Jan 1970 00:00:00 -0000
--- gdb/testsuite/gdb.arch/e500-prologue.exp	14 May 2004 22:22:00 -0000
***************
*** 0 ****
--- 1,82 ----
+ # 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.  
+ #
+ # This file is part of the gdb testsuite.
+ 
+ if $tracelevel {
+     strace $tracelevel
+ }
+ 
+ # Test PowerPC E500 prologue analyzer.
+ 
+ set prms_id 0
+ set bug_id 0
+ 
+ if ![istarget "powerpc-*"] then {
+     verbose "Skipping powerpc E500 prologue tests."
+     return
+ }
+ 
+ set testfile "e500-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 "arg_passing_test2" 40