1# Copyright 2002, 2004, 2007 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 3 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, see <http://www.gnu.org/licenses/>. 15 16# Please email any bugs, comments, and/or additions to this file to: 17# bug-gdb@prep.ai.mit.edu 18 19# The doco makes reference to built-in registers -- $pc and $fp. If 20# the ISA contains registers by that name then they should be 21# displayed. If the ISA contains registers identified as being 22# equivalent, but have different names, then GDB will provide these as 23# aliases. If the ISA doesn't provide any equivalent registers, then 24# GDB will provide registers that map onto the frame's PC and FP. 25 26if $tracelevel then { 27 strace $tracelevel 28} 29 30# 31# test running programs 32# 33set prms_id 0 34set bug_id 0 35 36set testfile "pc-fp" 37set srcfile ${testfile}.c 38set binfile ${objdir}/${subdir}/${testfile} 39 40if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } { 41 untested pc-fp.exp 42 return -1 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}" 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 -> $REGNAME works. Use 81# display since that encodes and then decodes the expression parameter 82# (and hence uses the mechanisms we're trying to test). 83 84gdb_test "display/i \$pc" "1: x/i +\\\$pc( +|\r\n)${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