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# Copyright (C) 2008, 2009, 2010 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 3 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, see .

#

# Tests for Powerpc Decimal Floating Point registers setting and fetching

if $tracelevel then {

    strace $tracelevel

}

if ![istarget "powerpc*"] then {

    verbose "Skipping powerpc decimal floating point register tests."

    return

}

set testfile "ppc-dfp"

set binfile ${objdir}/${subdir}/${testfile}

set srcfile ${testfile}.c

if [get_compiler_info $binfile] {

    warning "get_compiler failed"

    return -1

}

if ![test_compiler_info gcc*] {

    # We use GCC's extended asm syntax

    warning "unknown compiler"

    return -1

}

if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {quiet debug}] != "" } {

    unsupported "This machine doesn't support Decimal Floating Point."

    return -1

}

# Start with a fresh gdb.

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

gdb_breakpoint [gdb_get_line_number "Set DFP rounding mode."]

gdb_run_cmd

# When the prompt comes back we'll be at the Set DFP rounding mode breakpoint.

# Unless the program bails out after checking AT_HWCAP.

gdb_expect {

  -re "Program exited with code 01.\[\r\n\]+$gdb_prompt $" {

    unsupported "This machine doesn't support Decimal Floating Point."

    return -1

  }

  -re ".*$gdb_prompt $" {}

}

# First, verify if FPSCR is all zeroes.

gdb_test "print \$fpscr" " = 0" "FPSCR is all zeroes"

# Step over "set rounding mode" instruction.

gdb_test "next" "" ""

# Verify that the following bits are set (See Power ISA for details):

#

# 29:31 - DFP Rounding Control

gdb_test "print/t \$fpscr" " = 10100000000000000000000000000000000" "FPSCR for round to nearest, ties toward zero rounding mode"