crt: Need a position-independent CRT for PIE
- Implement the greatest possible part of the crt1 in C
- Implement SPARC versions of the ASM sections of crt1
- Build crt1 position-independently, minor ASM updates to be position
  independent
- Implement crt1 with the hook expected by modern GCC to support
  profiling, make gcrt1 a symlink for source compatibility (older GCC
  initializes profiling at firsnt use of _mcount if necessary, so
  doesn't need the gcrt)
- Split the CRT out of developer/library/lint into a separate c-runtime package

          --- old/usr/src/cmd/sgs/rtld/sparc/Makefile
          +++ new/usr/src/cmd/sgs/rtld/sparc/Makefile

   1    1  #
   2    2  # CDDL HEADER START
   3    3  #
   4    4  # The contents of this file are subject to the terms of the
   5    5  # Common Development and Distribution License (the "License").
   6    6  # You may not use this file except in compliance with the License.
   7    7  #
   8    8  # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9  # or http://www.opensolaris.org/os/licensing.
  10   10  # See the License for the specific language governing permissions
  11   11  # and limitations under the License.
  12   12  #
  13   13  # When distributing Covered Code, include this CDDL HEADER in each
  14   14  # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15  # If applicable, add the following below this CDDL HEADER, with the
  16   16  # fields enclosed by brackets "[]" replaced with your own identifying
  17   17  # information: Portions Copyright [yyyy] [name of copyright owner]
  18   18  #
  19   19  # CDDL HEADER END
  20   20  #
  21   21  
  22   22  #
  23   23  # Copyright (c) 1990, 2010, Oracle and/or its affiliates. All rights reserved.
  24   24  #
  25   25  
  26   26  # Object lists are organized into primary (most frequently used code) and
  27   27  # secondary lists (less frequently used code, ie. a.out support).
  28   28  
  29   29  P_COMOBJS=      debugdata.o \
  30   30                  analyze.o       elf.o           external.o      globals.o \
  31   31                  malloc.o        paths.o         setup.o         util.o \
  32   32                  dlfcns.o        config_elf.o    locale.o        tsort.o \
  33   33                  remove.o        move.o          tls.o           cap.o
  34   34  
  35   35  S_COMOBJS=      debug.o         audit.o         object.o        cache_a.out.o \
  36   36                  a.out.o
  37   37  
  38   38  G_MACHOBJS=     doreloc.o
  39   39  

  40   40  P_MACHOBJS=     sparc_elf.o     _setup.o
  41   41  
  42   42  CP_MACHOBJS=    common_sparc.o
  43   43  
  44   44  S_MACHOBJS=     sparc_a.out.o
  45   45  
  46   46  P_ASOBJS=       boot.o          boot_elf.o      caller.o
  47   47  
  48   48  S_ASOBJS=       boot_a.out.o
  49   49  
  50      -CRTSRCS=        ../../../../lib/common/sparc
       50 +CRTSRCS=        ../../../../lib/crt/sparcv7
  51   51  CRTI=           pics/crti.o
  52   52  CRTN=           pics/crtn.o
  53   53  CRTS=           $(CRTI)         $(CRTN)
  54   54  
  55   55  CHKSRCS=        $(SRCBASE)/uts/common/krtld/reloc.h
  56   56  
  57   57  BASEPLAT =      sparc
  58   58  
  59   59  include         $(SRC)/Makefile.master
  60   60  

  61   61  # This is safe because linking is done only with the primary compiler.
  62   62  MAPFILE-ORDER =         ../common/mapfile-order-devpro
  63   63  $(__GNUC)MAPFILE-ORDER =        ../common/mapfile-order-gcc
  64   64  
  65   65  include         $(SRC)/cmd/sgs/rtld/Makefile.com
  66   66  
  67   67  # Add any a.out and machine specific flags.
  68   68  
  69   69  CPPFLAGS +=     -I../../../../uts/sparc/krtld -DA_OUT
  70   70  CFLAGS +=       -xregs=no%appl
  71   71  ASFLAGS +=      -K pic
  72   72  LINTFLAGS +=    -DA_OUT
  73   73  ADBGENCFLAGS += -erroff=%all
  74   74  ADBGENFLAGS +=  -milp32
  75   75  ADBSUB=         $(ADBSUB32)
  76   76  SONAME=         /lib/ld.so.1
  77   77  
  78   78  SGSMSGTARG +=   $(SGSMSGSPARC) $(SGSMSGSPARC32) $(SGSMSG32)
  79   79  
  80   80  .KEEP_STATE:
  81   81  
  82   82  all:            $(RTLD)
  83   83  
  84   84  install:        all $(ROOTDYNLIB)
  85   85  
  86   86  lint:           $(LINTOUT32)
  87   87  
  88   88  adbmacros:      adb .WAIT $(ADBSCRIPTS)
  89   89  
  90   90  adbinstall:     adbmacros .WAIT $(ROOTADB)
  91   91  
  92   92  include         $(SRC)/cmd/sgs/rtld/Makefile.targ

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