| # Copyright (C) 2008-2021 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 <http://www.gnu.org/licenses/>. |
| # |
| |
| # Tests for Powerpc floating point register setting and fetching |
| |
| if ![istarget "powerpc*"] then { |
| verbose "Skipping powerpc floating point register tests." |
| return |
| } |
| |
| standard_testfile |
| |
| if [get_compiler_info] { |
| 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" |