113 lines
3.9 KiB
Text
113 lines
3.9 KiB
Text
# Copyright 2016-2022 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/>.
|
|
|
|
# This file is part of the gdb testsuite. It is intended to test that
|
|
# gdb could correctly handle floating point constant with a suffix.
|
|
|
|
standard_testfile .c
|
|
|
|
proc do_compile { {opts {}} } {
|
|
global srcdir subdir srcfile binfile
|
|
set ccopts {debug quiet}
|
|
foreach opt $opts {lappend ccopts "additional_flags=$opt"}
|
|
gdb_compile "${srcdir}/${subdir}/${srcfile}" "$binfile" executable $ccopts
|
|
}
|
|
|
|
if { [do_compile] != "" && [do_compile {-mfloat128}] != "" } {
|
|
untested "compiler can't handle __float128 type?"
|
|
return -1
|
|
}
|
|
|
|
clean_restart ${binfile}
|
|
|
|
if ![runto_main] then {
|
|
perror "couldn't run to breakpoint"
|
|
return
|
|
}
|
|
|
|
# Run to the breakpoint at return.
|
|
gdb_breakpoint [gdb_get_line_number "return"]
|
|
gdb_continue_to_breakpoint "return"
|
|
|
|
# Print the original value of ld and f128
|
|
gdb_test "print ld" ".* = 1\\.375.*" "the original value of ld is 1.375"
|
|
gdb_test "print f128" ".* = 2\\.375.*" "the original value of f128 is 2.375"
|
|
|
|
# Test that gdb could correctly recognize float constant expression with a suffix.
|
|
# FIXME: gdb does not yet recognize the GNU extension 'q' suffix for __float128 constants.
|
|
gdb_test "print ld=-1.375l" ".* = -1\\.375.*" "try to change ld to -1.375 with 'print ld=-1.375l'"
|
|
gdb_test "print f128=-2.375l" ".* = -2\\.375.*" "try to change f128 to -2.375 with 'print f128=-2.375l'"
|
|
|
|
# Test that gdb could handle the above correctly with "set var" command.
|
|
set test "set variable ld=10.375l"
|
|
gdb_test_multiple "set var ld=10.375l" "$test" {
|
|
-re "$gdb_prompt $" {
|
|
pass "$test"
|
|
}
|
|
-re "Invalid number.*$gdb_prompt $" {
|
|
fail "$test (do not recognize 10.375l)"
|
|
}
|
|
}
|
|
|
|
set test "set variable f128=20.375l"
|
|
gdb_test_multiple "set var f128=20.375l" "$test" {
|
|
-re "$gdb_prompt $" {
|
|
pass "$test"
|
|
}
|
|
-re "Invalid number.*$gdb_prompt $" {
|
|
fail "$test (do not recognize 20.375l)"
|
|
}
|
|
}
|
|
|
|
gdb_test "print ld" ".* = 10\\.375.*" "the value of ld is changed to 10.375"
|
|
gdb_test "print f128" ".* = 20\\.375.*" "the value of f128 is changed to 20.375"
|
|
|
|
set mpfr_supported -1
|
|
gdb_test_multiple "show configuration" "" {
|
|
-wrap -re "--with-mpfr\r\n.*" {
|
|
set mpfr_supported 1
|
|
}
|
|
-wrap -re "--without-mpfr\r\n.*" {
|
|
set mpfr_supported 0
|
|
}
|
|
}
|
|
|
|
# Test that we can correctly handle the largest IEEE-128 value
|
|
# Note: If we get "inf" instead of the correct result, we may have run into
|
|
# an internal overflow. This typically happens on host platforms without
|
|
# native IEEE-128 support where GDB was built without MPFR support.
|
|
set test "print large128"
|
|
gdb_test_multiple "print large128" "$test" {
|
|
-re ".* = 1\\.18973149535723176508575932662800702e\\+4932.*$gdb_prompt $" {
|
|
pass "$test"
|
|
}
|
|
-re ".* = inf.*$gdb_prompt $" {
|
|
if { $mpfr_supported == 0 } {
|
|
# If the host platform has native 128-bit float support (as is
|
|
# the case for some versions of s390 and powerpc), the
|
|
# "print large128" test should be passing, even without MPFR
|
|
# support. So, in those cases we should have fail here rather than
|
|
# unsupported. However, given that we don't have a way to readily
|
|
# test for this, we fall back to unsupported.
|
|
unsupported "$test (Missing MPFR support)"
|
|
} else {
|
|
fail $test
|
|
}
|
|
}
|
|
-re ".*$gdb_prompt $" {
|
|
fail "$test"
|
|
}
|
|
}
|
|
|