testsuite/gdb.base/floatn.exp

# Copyright 2016-2020 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 _FloatN/_FloatNx types?"
    return -1
}

clean_restart ${binfile}

if ![runto_main] then {
    perror "couldn't run to breakpoint"
    continue
}

# Run to the breakpoint at return.
gdb_breakpoint [gdb_get_line_number "return"]
gdb_continue_to_breakpoint "return"

# Print the original values of f32, f64, f128, f32x, f64x.
gdb_test "print f32" ".* = 1\\.5.*" "the original value of f32 is 1.5"
gdb_test "print f64" ".* = 2\\.25.*" "the original value of f64 is 2.25"
gdb_test "print f128" ".* = 3\\.375.*" "the original value of f128 is 3.375"
gdb_test "print f32x" ".* = 10\\.5.*" "the original value of f32x is 10.5"
gdb_test "print f64x" ".* = 20\\.25.*" "the original value of f64x is 20.25"

# Test that gdb could correctly recognize float constant expression with a suffix.
# FIXME: gdb does not yet recognize the suffix for _FloatN/_FloatNx types.
gdb_test "print f32=-1.5" ".* = -1\\.5.*" "try to change f32 to -1.5 with 'print f32=-1.5'"
gdb_test "print f64=-2.25" ".* = -2\\.25.*" "try to change f64 to -2.25 with 'print f64=-2.25'"
gdb_test "print f128=-3.375" ".* = -3\\.375.*" "try to change f128 to -3.375 with 'print f128=-3.375'"
gdb_test "print f32x=-10.5" ".* = -10\\.5.*" "try to change f32x to -10.5 with 'print f32=-1.5x'"
gdb_test "print f64x=-20.25" ".* = -20\\.25.*" "try to change f64x to -20.25 with 'print f64=-2.25x'"

# Test that gdb could handle the above correctly with "set var" command.
set test "set variable f32 = 10.5"
gdb_test_multiple "set var f32=10.5" "$test" {
    -re "$gdb_prompt $" {
	pass "$test"
    }
    -re "Invalid number.*$gdb_prompt $" {
	fail "$test (do not recognize 10.5)"
    }
}

set test "set variable f64 = 20.25"
gdb_test_multiple "set var f64=20.25" "$test" {
    -re "$gdb_prompt $" {
	pass "$test"
    }
    -re "Invalid number.*$gdb_prompt $" {
	fail "$test (do not recognize 20.25)"
    }
}

set test "set variable f128 = 30.375"
gdb_test_multiple "set var f128=30.375" "$test" {
    -re "$gdb_prompt $" {
	pass "$test"
    }
    -re "Invalid number.*$gdb_prompt $" {
	fail "$test (do not recognize 30.375)"
    }
}

set test "set variable f32x = 100.5"
gdb_test_multiple "set var f32x=100.5" "$test" {
    -re "$gdb_prompt $" {
	pass "$test"
    }
    -re "Invalid number.*$gdb_prompt $" {
	fail "$test (do not recognize 100.5)"
    }
}

set test "set variable f64x = 200.25"
gdb_test_multiple "set var f64x=200.25" "$test" {
    -re "$gdb_prompt $" {
	pass "$test"
    }
    -re "Invalid number.*$gdb_prompt $" {
	fail "$test (do not recognize 200.25)"
    }
}

gdb_test "print f32" ".* = 10\\.5.*" "the value of f32 is changed to 10.5"
gdb_test "print f64" ".* = 20\\.25.*" "the value of f64 is changed to 20.25"
gdb_test "print f128" ".* = 30\\.375.*" "the value of f128 is changed to 30.375"
gdb_test "print f32x" ".* = 100\\.5.*" "the value of f32x is changed to 100.5"
gdb_test "print f64x" ".* = 200\\.25.*" "the value of f64x is changed to 200.25"

# Print the original values of c32, c64, c128, c32x, c64x.
gdb_test "print c32" ".* = 1\\.5 \\+ 1i.*" "the original value of c32 is 1.5 + 1i"
gdb_test "print c64" ".* = 2\\.25 \\+ 1i.*" "the original value of c64 is 2.25 + 1i"
gdb_test "print c128" ".* = 3\\.375 \\+ 1i.*" "the original value of c128 is 3.375 + 1i"
gdb_test "print c32x" ".* = 10\\.5 \\+ 1i.*" "the original value of c32x is 10.5 + 1i"
gdb_test "print c64x" ".* = 20\\.25 \\+ 1i.*" "the original value of c64x is 20.25 + 1i"