ld/testsuite/ld-auto-import/auto-import.exp

   1 # Expect script for ld-auto-import tests
   2 #   Copyright 2002, 2007, 2008
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU Binutils.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 # MA 02110-1301, USA.
  21 #
  22 # Written by Ralf.Habacker@freenet.de
  23 # Based on ls-shared/shared.exp by Ian Lance Taylor (ian@cygnus.com)
  24 #
  25
  26 # Note:
  27 #
  28 # This script tests some auto-import functionality:
  29 #
  30 #  A. "auto importing direct from a dll" functionality, which dramatically reduces the
  31 #     linking time for big libraries and applications by skipping creating/using
  32 #     import libraries. Instead it links directly to the related dll or to a symlinked
  33 #     dll for replacing regular import libraries. The test has 6 stages:
  34 #
  35 #     1. compile and link a test dll exporting some text and data symbols and a
  36 #     standard import library
  37 #
  38 #     2. create a symbolic link to this dll to simulate a replaced import library.
  39 #
  40 #     3. compile and link a client application with the standard import library.
  41 #     This should produce no errors.
  42 #
  43 #     4. compile and link a client application with the created dll.
  44 #     This should also produce no errors.
  45 #
  46 #     5. compile and link a client application using the "import library".
  47 #     This should also produce no errors.
  48 #
  49 #     6. compile and link a client application with auto-import disabled.
  50 #     This should produce a linking error.
  51 #
  52 # B. runtime check if there are no segfaults when importing const data variables
  53 #
  54
  55 # This test can only be run if ld generates native executables.
  56 if ![isnative] then {return}
  57
  58 # This test can only be run on a couple of platforms.
  59 # Square bracket expressions seem to confuse istarget.
  60 if { ![istarget *-pc-cygwin]
  61      && ![istarget *-pc-mingw*] } {
  62     return
  63 }
  64
  65 if [istarget *-pc-mingw*] {
  66     # FIXME: Add support for this target.
  67     unsupported "mingw currently not supported"
  68 }
  69
  70 # No compiler, no test.
  71 if { [which $CC] == 0 } {
  72     untested "Auto import test (compiler not found)"
  73     return
  74 }
  75
  76 # ld_special_link
  77 #       link a program using ld, without including any libraries
  78 #
  79 proc ld_special_link { ld target objects } {
  80     global host_triplet
  81     global link_output
  82
  83     if { [which $ld] == 0 } then {
  84         perror "$ld does not exist"
  85         return 0
  86     }
  87
  88     if [is_endian_output_format $objects] then {
  89         set flags [big_or_little_endian]
  90     } else {
  91         set flags ""
  92     }
  93
  94     verbose -log "$ld $flags -o $target $objects"
  95
  96     catch "exec $ld $flags -o $target $objects" link_output
  97     set exec_output [prune_warnings $link_output]
  98
  99     # We don't care if we get a warning about a non-existent start
 100     # symbol, since the default linker script might use ENTRY.
 101     regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
 102
 103     # We don't care if we get a message about creating a library file.
 104     regsub -all "(^|\n)(Creating library file\[^\n\]*\n?)" $exec_output "\\1" exec_output
 105
 106     if [string match "" $exec_output] then {
 107         return 1
 108     }
 109
 110     verbose -log "$exec_output"
 111     return 0
 112 }
 113
 114 set tmpdir tmpdir
 115 set SHCFLAG ""
 116
 117 if [istarget *-pc-cygwin] {
 118     # Set some libs needed for cygwin.
 119     set MYLIBS "-L/usr/lib -lcygwin -L/usr/lib/w32api -lkernel32"
 120
 121     # Compile the dll.
 122     if ![ld_compile "$CC $CFLAGS $SHCFLAG" $srcdir/$subdir/dll.c $tmpdir/dll.o] {
 123         fail "compiling shared lib"
 124     }
 125     if ![ld_special_link "$ld -shared --enable-auto-import --out-implib=$tmpdir/libstandard.dll.a" $tmpdir/dll.dll "$tmpdir/dll.o $MYLIBS"] {
 126         fail "linking shared lib"
 127     }
 128
 129     # Create symbolic link.
 130     catch "exec ln -fs dll.dll $tmpdir/libsymlinked_dll.dll.a" ln_catch
 131
 132     # Compile and link the client program.
 133     if ![ld_compile "$CC $CFLAGS $SHCFLAG" $srcdir/$subdir/client.c $tmpdir/client.o] {
 134         fail "compiling client"
 135     }
 136
 137     # Check linking with import library.
 138     set msg "linking auto-import client using a standard import library"
 139     if [ld_special_link $ld $tmpdir/client-linklib.exe "--enable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -lstandard $MYLIBS"] {
 140         pass $msg
 141     } else {
 142         fail $msg
 143     }
 144
 145     # Check linking directly with dll.
 146     set msg "linking auto-import client using the dll"
 147     if [ld_special_link $ld $tmpdir/client-linkdll.exe "--enable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -ldll $MYLIBS"] {
 148         pass $msg
 149     } else {
 150         fail $msg
 151     }
 152
 153     # Check linking with symlinked dll.
 154     set msg "linking auto-import client using symbolic linked dll"
 155     if [ld_special_link $ld $tmpdir/client-symlinkeddll.exe "--enable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -lsymlinked_dll $MYLIBS"] {
 156         pass $msg
 157     } else {
 158         fail $msg
 159     }
 160
 161     # Check linking with disabled auto-import, this must produce linking error.
 162     set msg "linking with disabled auto-import"
 163     if ![ld_special_link $ld $tmpdir/client-failed.exe "--disable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -ldll $MYLIBS"] {
 164         pass $msg
 165     } else {
 166         fail $msg
 167     }
 168
 169     # Check that the app works - ie that there is output when the applications runs.
 170     set msg "application runtime segfault check"
 171     catch "exec $tmpdir/client-linklib.exe" exec_output
 172     if ![string match "" $exec_output] then {
 173         pass $msg
 174     } else {
 175         fail $msg
 176     }
 177 }