1# Copyright (C) 2008, 2009, 2010, 2011 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
17# Tests for Powerpc floating point register setting and fetching
18
19if $tracelevel then {
20    strace $tracelevel
21}
22
23if ![istarget "powerpc*"] then {
24    verbose "Skipping powerpc floating point register tests."
25    return
26}
27
28set testfile "ppc-fp"
29set binfile ${objdir}/${subdir}/${testfile}
30set srcfile ${testfile}.c
31
32if [get_compiler_info $binfile] {
33    warning "get_compiler failed"
34    return -1
35}
36
37if ![test_compiler_info gcc*] {
38    # We use GCC's extended asm syntax
39    warning "unknown compiler"
40    return -1
41}
42
43if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {quiet debug}] != "" } {
44    verbose "Skipping FPSCR tests."
45    return -1
46}
47
48# Start with a fresh gdb.
49
50gdb_exit
51gdb_start
52gdb_reinitialize_dir $srcdir/$subdir
53gdb_load ${binfile}
54
55gdb_breakpoint [gdb_get_line_number "Invalid operation."]
56gdb_breakpoint [gdb_get_line_number "Division by zero."]
57
58gdb_run_cmd
59
60# When the prompt comes back we'll be in the invalid operation breakpoint.
61gdb_expect { -re ".*$gdb_prompt $" {} }
62
63# First, verify if FPSCR exists and is all zeroes.
64gdb_test_multiple "print \$fpscr" "FPSCR exists" {
65  -re " = 0\[\r\n\]+$gdb_prompt $" { pass "FPSCR is all zeroes" }
66
67  -re " = void\[\r\n\]+$gdb_prompt $" {
68    # There's no FPSCR.  Skip this testcase.
69    verbose "Skipping powerpc floating point register tests."
70    return
71  }
72}
73
74# Step over invalid operation.
75gdb_test "next" "" ""
76
77# Verify that the following bits are set (See Power ISA for details):
78#
79# 32 - Floating-Point Exception Summary (FX)
80# 34 - Floating-Point Invalid Operation Summary (VX)
81# 42 - Floating-Point Invalid Operation Exception (VXZDZ)
82# 47 - Floating-Point Result Class Descriptor (C)
83# 51 - Floating-Point Unordered or NaN (FU or ?)
84gdb_test "print/t \$fpscr" " = 10100000001000010001000000000000" "FPSCR for invalid operation"
85
86gdb_continue_to_breakpoint "go to division by zero"
87
88# Step over division by zero.
89gdb_test "next" "" ""
90
91# Verify that the following bits are set (See Power ISA for details):
92#
93# 32 - Floating-Point Exception Summary (FX)
94# 37 - Floating-Point Zero Divide Exception (ZX)
95# 49 - Floating-Point Greater Than or Positive (FG or >)
96# 51 - Floating-Point Unordered or NaN (FU or ?)
97gdb_test "print/t \$fpscr" " = 10000100000000000101000000000000" "FPSCR for division by zero"
98