diff options
| -rw-r--r-- | gdb/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/ppc-fp.c | 36 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.arch/ppc-fp.exp | 100 |
3 files changed, 141 insertions, 0 deletions
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 5e6bbb3..1612532 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-09-05 Thiago Jung Bauermann <bauerman@br.ibm.com> + + * gdb.arch/ppc-fp.exp: New file. + * gdb.arch/ppc-fp.c: New file. + 2008-09-05 Paul Pluzhnikov <ppluzhnikov@google.com> *gdb.base/mips_pro.exp: compile with gcc -fno-inline, diff --git a/gdb/testsuite/gdb.arch/ppc-fp.c b/gdb/testsuite/gdb.arch/ppc-fp.c new file mode 100644 index 0000000..841b112 --- /dev/null +++ b/gdb/testsuite/gdb.arch/ppc-fp.c @@ -0,0 +1,36 @@ +/* Copyright 2008 Free Software Foundation, Inc. + + This file is part of GDB. + + 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/>. */ + +int +main (int argc, char *argv[]) +{ + double result; + + asm ("fdiv %0, %1, %1\n" /* Invalid operation. */ + : "=f" (result) + : "f" (0.0)); + + asm ("mtfsf 0xff, %0\n" /* Reset FPSCR. */ + : + : "f" (0.0)); + + asm ("fdiv %0, %1, %2\n" /* Division by zero. */ + : "=f" (result) + : "f" (1.25), "f" (0.0)); + + return 0; +} diff --git a/gdb/testsuite/gdb.arch/ppc-fp.exp b/gdb/testsuite/gdb.arch/ppc-fp.exp new file mode 100644 index 0000000..170d58c --- /dev/null +++ b/gdb/testsuite/gdb.arch/ppc-fp.exp @@ -0,0 +1,100 @@ +# Copyright (C) 2008 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/>. +# +# Please email any bugs, comments, and/or additions to this file to: +# bug-gdb@prep.ai.mit.edu +# + +# 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" |