1#   Copyright 2002, 2004 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 2 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with this program; if not, write to the Free Software
15# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
16
17# Please email any bugs, comments, and/or additions to this file to:
18# bug-gdb@prep.ai.mit.edu
19
20# The doco makes reference to built-in registers -- $pc and $fp.  If
21# the ISA contains registers by that name then they should be
22# displayed.  If the ISA contains registers identified as being
23# equivalent, but have different names, then GDB will provide these as
24# aliases.  If the ISA doesn't provide any equivalent registers, then
25# GDB will provide registers that map onto the frame's PC and FP.
26
27if $tracelevel then {
28    strace $tracelevel
29}
30
31#
32# test running programs
33#
34set prms_id 0
35set bug_id 0
36
37set testfile "pc-fp"
38set srcfile ${testfile}.c
39set binfile ${objdir}/${subdir}/${testfile}
40
41if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-w}] != "" } {
42    gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
43}
44
45if [get_compiler_info ${binfile}] {
46    return -1
47}
48
49gdb_exit
50gdb_start
51gdb_reinitialize_dir $srcdir/$subdir
52gdb_load ${binfile}
53
54if ![runto_main] then {
55    perror "couldn't run to breakpoint"
56    continue
57}
58
59proc get_valueofx { fmt exp default } {
60    global gdb_prompt
61    send_gdb "print${fmt} ${exp}\n"
62    gdb_expect {
63	-re "\\$\[0-9\]* = (0x\[0-9a-zA-Z\]+).*$gdb_prompt $" {
64	    set val $expect_out(1,string)
65	    pass "get value of ${exp} ($val)"
66	}
67	timeout {
68	    set val ${default}
69	    fail "get value of ${exp} (timeout)"
70	}
71    }
72    return ${val}
73}
74
75# Get the value of PC and FP
76
77set valueof_pc [get_valueofx "/x" "\$pc" "0"]
78set valueof_fp [get_valueofx "/x" "\$fp" "0"]
79
80# Check that the sequence $REGNAME -> REGNUM -> $REGNAME works.  Use
81# display since that encodes and then decodes the expression parameter
82# (and hence uses the mechanisms we're trying to test).
83
84gdb_test "display/i \$pc" "1: x/i +\\\$pc +${valueof_pc}.*"
85gdb_test "display/w \$fp" "2: x/xw +\\\$fp +${valueof_fp}.*"
86
87# FIXME: cagney/2002-09-04: Should also check that ``info registers
88# $pc'' et.al.'' come back with the same value as the above displays
89# and a print --- assuming that is that people agree to such behavour.
90# Need to re-write default_print_registers_info() for it to work (and
91# such a rewrite is on the reggroups branch).
92
93# gdb_test "info registers \$pc" "${valueof_pc}"
94# gdb_test "info registers \$fp" "${valueof_fp}"
95