93 lines
2.9 KiB
Text
93 lines
2.9 KiB
Text
# Copyright (C) 2008-2012 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Tests for Powerpc floating point register setting and fetching
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if ![istarget "powerpc*"] then {
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verbose "Skipping powerpc floating point register tests."
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return
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}
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set testfile "ppc-fp"
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set binfile ${objdir}/${subdir}/${testfile}
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set srcfile ${testfile}.c
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if [get_compiler_info $binfile] {
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warning "get_compiler failed"
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return -1
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}
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if ![test_compiler_info gcc*] {
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# We use GCC's extended asm syntax
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warning "unknown compiler"
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return -1
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}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {quiet debug}] != "" } {
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verbose "Skipping FPSCR tests."
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return -1
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}
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# Start with a fresh gdb.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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gdb_breakpoint [gdb_get_line_number "Invalid operation."]
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gdb_breakpoint [gdb_get_line_number "Division by zero."]
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gdb_run_cmd
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# When the prompt comes back we'll be in the invalid operation breakpoint.
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gdb_expect { -re ".*$gdb_prompt $" {} }
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# First, verify if FPSCR exists and is all zeroes.
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gdb_test_multiple "print \$fpscr" "FPSCR exists" {
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-re " = 0\[\r\n\]+$gdb_prompt $" { pass "FPSCR is all zeroes" }
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-re " = void\[\r\n\]+$gdb_prompt $" {
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# There's no FPSCR. Skip this testcase.
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verbose "Skipping powerpc floating point register tests."
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return
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}
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}
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# Step over invalid operation.
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gdb_test "next" "" ""
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# Verify that the following bits are set (See Power ISA for details):
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#
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# 32 - Floating-Point Exception Summary (FX)
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# 34 - Floating-Point Invalid Operation Summary (VX)
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# 42 - Floating-Point Invalid Operation Exception (VXZDZ)
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# 47 - Floating-Point Result Class Descriptor (C)
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# 51 - Floating-Point Unordered or NaN (FU or ?)
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gdb_test "print/t \$fpscr" " = 10100000001000010001000000000000" "FPSCR for invalid operation"
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gdb_continue_to_breakpoint "go to division by zero"
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# Step over division by zero.
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gdb_test "next" "" ""
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# Verify that the following bits are set (See Power ISA for details):
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#
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# 32 - Floating-Point Exception Summary (FX)
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# 37 - Floating-Point Zero Divide Exception (ZX)
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# 49 - Floating-Point Greater Than or Positive (FG or >)
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# 51 - Floating-Point Unordered or NaN (FU or ?)
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gdb_test "print/t \$fpscr" " = 10000100000000000101000000000000" "FPSCR for division by zero"
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