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/amd64/Makefile
          +++ new/usr/src/cmd/sgs/rtld/amd64/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) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  24   24  #
  25   25  
  26   26  BASEPLAT =      amd64
  27   27  
  28   28  # Object lists are organized into primary (most frequently used code) and
  29   29  # secondary lists (less frequently used code, ie. a.out support).
  30   30  
  31   31  P_COMOBJS=      debugdata.o \
  32   32                  analyze.o       elf.o           external.o      globals.o \
  33   33                  malloc.o        paths.o         setup.o         util.o \
  34   34                  dlfcns.o        config_elf.o    locale.o        tsort.o \
  35   35                  remove.o        move.o          tls.o           cap.o
  36   36  
  37   37  S_COMOBJS=      debug.o         audit.o         object.o
  38   38  
  39   39  G_MACHOBJS=     doreloc.o
  40   40  

  41   41  P_MACHOBJS=     amd64_elf.o     _setup.o        dlamd64getunwind.o
  42   42  
  43   43  CP_MACHOBJS=
  44   44  
  45   45  S_MACHOBJS=     
  46   46  
  47   47  P_ASOBJS=       boot.o          boot_elf.o      caller.o
  48   48  
  49   49  S_ASOBJS=       
  50   50  
  51      -CRTSRCS=        ../../../../lib/common/amd64
       51 +CRTSRCS=        ../../../../lib/crt/amd64
  52   52  CRTI=           pics/crti.o
  53   53  CRTN=           pics/crtn.o
  54   54  CRTS=           $(CRTI)         $(CRTN)
  55   55  
  56   56  include         $(SRC)/cmd/sgs/rtld/Makefile.com
  57   57  include         $(SRC)/lib/Makefile.lib.64
  58   58  
  59   59  # We build 64-bit objects with gcc by default
  60   60  MAPFILE-ORDER =                 ../common/mapfile-order-devpro
  61   61  $(__GNUC64)MAPFILE-ORDER =      ../common/mapfile-order-gcc

  62   62  
  63   63  # Add any machine specific flags.
  64   64  
  65   65  CFLAGS +=       -xregs=no%appl
  66   66  ASFLAGS +=      -D__amd64 -D_ELF64 $(amd64_ASFLAGS)
  67   67  ADBGENFLAGS +=  -mlp64
  68   68  ADBGENCFLAGS += -erroff=%all
  69   69  ADBSUB=         $(ADBSUB64)
  70   70  CPPFLAGS +=     -D_ELF64
  71   71  LINTFLAGS64 +=  $(VAR_LINTFLAGS64)
  72   72  SONAME=         /lib/amd64/ld.so.1
  73   73  
  74   74  SGSMSGTARG +=   $(SGSMSGINTEL) $(SGSMSGINTEL64) $(SGSMSG64)
  75   75  
  76   76  LDLIB =         -L ../../libld/$(MACH64)
  77   77  RTLDLIB =       -L ../../librtld/$(MACH64)
  78   78  
  79   79  CPICLIB =       $(CPICLIB64)
  80   80  LDDBGLIBDIR =   $(LDDBGLIBDIR64)
  81   81  CONVLIBDIR =    $(CONVLIBDIR64)
  82   82  
  83   83  .KEEP_STATE:
  84   84  
  85   85  all:            $(RTLD)
  86   86  
  87   87  install:        all $(ROOTDYNLIB64)
  88   88  
  89   89  lint:           $(LINTOUT64)
  90   90  
  91   91  adbmacros:      adb .WAIT $(ADBSCRIPTS)
  92   92  
  93   93  adbinstall:     adbmacros .WAIT $(ROOTADB64)
  94   94  
  95   95  include         $(SRC)/cmd/sgs/rtld/Makefile.targ
  96   96  include         ../../Makefile.sub.64

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