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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 floating point register setting and fetching

if $tracelevel then {

    strace $tracelevel

}

if ![istarget "powerpc*"] then {

    verbose "Skipping powerpc floating point register tests."

    return

}

set testfile "ppc-fp"

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}] != "" } {

    verbose "Skipping FPSCR tests."

    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 "Invalid operation."]

gdb_breakpoint [gdb_get_line_number "Division by zero."]

gdb_run_cmd

# When the prompt comes back we'll be in the invalid operation breakpoint.

gdb_expect { -re ".*$gdb_prompt $" {} }

# First, verify if FPSCR exists and is all zeroes.

gdb_test_multiple "print \$fpscr" "FPSCR exists" {

  -re " = 0\[\r\n\]+$gdb_prompt $" { pass "FPSCR is all zeroes" }

  -re " = void\[\r\n\]+$gdb_prompt $" {

    # There's no FPSCR.  Skip this testcase.

    verbose "Skipping powerpc floating point register tests."

    return

  }

}

# Step over invalid operation.

gdb_test "next" "" ""

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

#

# 32 - Floating-Point Exception Summary (FX)

# 34 - Floating-Point Invalid Operation Summary (VX)

# 42 - Floating-Point Invalid Operation Exception (VXZDZ)

# 47 - Floating-Point Result Class Descriptor (C)

# 51 - Floating-Point Unordered or NaN (FU or ?)

gdb_test "print/t \$fpscr" " = 10100000001000010001000000000000" "FPSCR for invalid operation"

gdb_continue_to_breakpoint "go to division by zero"

# Step over division by zero.

gdb_test "next" "" ""

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

#

# 32 - Floating-Point Exception Summary (FX)

# 37 - Floating-Point Zero Divide Exception (ZX)

# 49 - Floating-Point Greater Than or Positive (FG or >)

# 51 - Floating-Point Unordered or NaN (FU or ?)

gdb_test "print/t \$fpscr" " = 10000100000000000101000000000000" "FPSCR for division by zero"