sysdeps/sparc/sparc32/Makefile

   1 # Copyright (C) 1991-2017 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 ifeq ($(subdir),gnulib)
  19 sysdep_routines = dotmul umul $(divrem) alloca
  20 endif   # gnulib
  21
  22 # We distribute these files, even though they are generated,
  23 # so as to avoid the need for a functioning m4 to build the library.
  24 divrem := sdiv udiv rem urem
  25
  26 +divrem-NAME-sdiv := div
  27 +divrem-NAME-udiv := udiv
  28 +divrem-NAME-rem := rem
  29 +divrem-NAME-urem := urem
  30 +divrem-NAME = $(+divrem-NAME-$(basename $(notdir $@)))
  31 +divrem-OP-div := div
  32 +divrem-OP-udiv := div
  33 +divrem-OP-rem := rem
  34 +divrem-OP-urem := rem
  35 +divrem-S-div := true
  36 +divrem-S-rem := true
  37 +divrem-S-udiv := false
  38 +divrem-S-urem := false
  39 $(divrem:%=$(sysdep_dir)/sparc/sparc32/%.S): $(sysdep_dir)/sparc/sparc32/divrem.m4
  40         (echo -n "define(NAME,\`.$(+divrem-NAME)')"; \
  41          echo -n " define(OP,\`$(+divrem-OP-$(+divrem-NAME))')"; \
  42          echo -n " define(S,\`$(+divrem-S-$(+divrem-NAME))')"; \
  43          echo " /* This file is generated from divrem.m4; DO NOT EDIT! */"; \
  44          cat $<) | $(M4) > $@-tmp
  45 # Make it unwritable so noone will edit it by mistake.
  46         -chmod a-w $@-tmp
  47         mv -f $@-tmp $@
  48
  49 sysdep-realclean := $(sysdep-realclean) $(divrem:%=sysdeps/sparc/sparc32/%.S)
  50
  51 # libgcc __divdi3 and __moddi3 uses .udiv and since it is also exported by
  52 # libc.so linker will create PLTs for the symbol.  To avoid it we strong alias
  53 # the exported libc one to __wrap_.udiv and use linker option --wrap to make any
  54 # call to .udiv to call the wrapper symbol.
  55 libc.so-gnulib += -Wl,--wrap=.udiv