gdb/testsuite/gdb.arch/ppc-longdouble.exp

   1 # Copyright 2016-2019 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 if ![istarget "powerpc*"] then {
  17     verbose "Skipping powerpc long-double floating point tests."
  18     return
  19 }
  20
  21 standard_testfile
  22
  23 proc do_test { name {opts {}} } {
  24     global srcdir subdir srcfile binfile
  25     set ccopts {debug quiet}
  26     foreach opt $opts {lappend ccopts "additional_flags=$opt"}
  27     set lines [gdb_compile "${srcdir}/${subdir}/${srcfile}" "$binfile.$name" executable $ccopts]
  28     # We get this warning even with the nowarnings option ...
  29     regsub -all "(^|\n)\[^\n\]*using \[^\n\]* extended precision long double" $lines "" lines
  30     if { $lines != "" } then {
  31         return
  32     }
  33
  34     clean_restart ${binfile}.${name}
  35
  36     if ![runto_main] then {
  37         return
  38     }
  39
  40     # Run to the breakpoint at return.
  41     gdb_breakpoint [gdb_get_line_number "return"]
  42     gdb_continue_to_breakpoint "return"
  43
  44     # Print the value of ld
  45     gdb_test "print ld" ".* = 1\\.375.*" "the value of ld is 1.375 ($name)"
  46     # Print the value of float128
  47     gdb_test "print float128" ".* = 2\\.375.*" "the value of float128 is 2.375 ($name)"
  48     # Print the value of ibm128
  49     gdb_test "print ibm128" ".* = 3\\.375.*" "the value of ibm128 is 3.375 ($name)"
  50 }
  51
  52 # Verify that we correctly detect the floating-point format used for
  53 # long double.  Re-run the test with -mabi=ieeelongdouble and mabi=ibmlongdouble
  54
  55 do_test default { -mfloat128 }
  56 do_test ieee128 { -mfloat128 -mabi=ieeelongdouble }
  57 do_test ibm128 { -mfloat128 -mabi=ibmlongdouble }
  58