minix/llvm/build.llvm

   1 #!/bin/bash
   2
   3 ############################
   4 #
   5 # Author: Koustubha Bhat
   6 # Date  : 3-April-2014
   7 # VU University, Amsterdam.
   8 #
   9 ############################
  10
  11 set -o errexit
  12
  13 MYPWD=`pwd`
  14 MINIX_ROOT=
  15 MINIX_LLVM_DIR=
  16 LLVMPASS=
  17 LLVMARGS=
  18 LLVMPASS_PATHS=
  19 TARGET_MODULES=
  20 MINIX_MODS=
  21
  22 # Set default values for essential variables
  23 : ${GENERATE_MAP="no"}
  24 : ${C="servers,drivers"}
  25
  26 function usage()
  27 {
  28    echo "C=<target Minix module(s)> $0 [<LLVM-pass name> ...]"
  29    echo
  30    echo "Examples:"
  31    echo "C=pm,vfs ./$0 dummy"
  32    echo "C=drivers ./$0 dummy"
  33    echo
  34    echo "Additional arguments to the passes may be passed through \${LLVM_PASS_ARGS}."
  35    echo
  36 }
  37
  38 function check_current_dir()
  39 {
  40    #Make sure we are running from the root dir of the Minix sources
  41    if [ -d ./minix/drivers ] && [ -d ./minix/servers ] ; then
  42         MINIX_ROOT="${MYPWD}"
  43    elif [ -d ../../minix/drivers ] && [ -d ../../minix/servers ]; then
  44         MINIX_ROOT="${MYPWD}/../.."
  45    else
  46         echo "Please run the script from either of the following locations:"
  47         echo "> Root of the Minix sources."
  48         echo "          OR"
  49         echo "> minix/llvm directory of the Minix sources."
  50         exit 1
  51    fi
  52
  53    MINIX_LLVM_DIR="${MINIX_ROOT}/minix/llvm"
  54 }
  55
  56 function check_args()
  57 {
  58    local llvmpass=
  59    local llvmpass_path=
  60    local exit_flag=0
  61
  62    if [ $# -ge 1 ]; then
  63
  64         if [ "$1" == "--help" ] || [ "$1" == "-h" ]; then
  65                 usage
  66                 exit 1
  67         fi
  68
  69         for p in "$@" ;
  70         do
  71                 llvmpass=$p
  72                 # Default value for llvmargs not specified deliberately
  73
  74                 if [ -f "${INSTALL_DIR}/${llvmpass}.so" ]; then
  75                         llvmpass_path="${INSTALL_DIR}/${llvmpass}.so"
  76                 elif [ -f "${MINIX_LLVM_BIN_DIR}/${llvmpass}.so" ]; then
  77                         llvmpass_path="${MINIX_LLVM_BIN_DIR}/${llvmpass}.so"
  78                 else
  79                         llvmpass_path=""
  80                 fi
  81                 if [ "$llvmpass_path" != "" ]; then
  82                         LLVMPASS_PATHS+=" -load=${llvmpass_path}"
  83                 fi
  84                 LLVMPASS_PATHS+=" -${llvmpass}"
  85         done
  86
  87         if [ ${exit_flag} == 1 ]; then
  88                 echo "Searched in the following location(s):"
  89                 echo "  ${INSTALL_DIR}"
  90                 echo "  ${MINIX_LLVM_BIN_DIR}"
  91                 exit 1
  92         fi
  93
  94         LLVMARGS=" ${LLVM_PASS_ARGS}"
  95   fi
  96 }
  97
  98 #Make sure we are running from the root dir of the Minix sources
  99 check_current_dir
 100
 101 # set up the bridge to llvm-apps repository and initialize
 102 . ${MINIX_LLVM_DIR}/minix.inc
 103 [ ! -f ${ROOT}/apps/scripts/include/configure.llvm.inc ] || . ${ROOT}/apps/scripts/include/configure.llvm.inc
 104
 105 # Arguments check
 106 check_args "$@"
 107
 108 if [ "$C" == "" ]; then
 109         C="hello"
 110 fi
 111
 112 if [ "${GENERATE_MAP}" != "" ] && [[ ${GENERATE_MAP} =~ [yY][eE][sS] ]]; then
 113         generate_modules_map
 114 fi
 115
 116 : ${OPTFLAGS="-disable-opt -disable-internalize -disable-inlining -load ${MINIX_LLVM_DIR}/bin/weak-alias-module-override.so -weak-alias-module-override"}
 117
 118 # If we are really instrumenting with some pass...
 119 if [ "${LLVMPASS_PATHS}" != "" ]; then
 120         OPTFLAGS=" ${OPTFLAGS} ${LLVMPASS_PATHS} ${LLVMARGS}"
 121 fi
 122
 123 TARGET_MODULES=`echo $C | sed -e "s/,/ /g"`
 124
 125 for m in ${TARGET_MODULES}
 126 do
 127         for p in `get_modules_path $m`
 128         do
 129                 MINIX_MODS="${MINIX_MODS} $p"
 130         done
 131 done
 132
 133 # Show info
 134 echo "Build.llvm: Executing with following parameters..."
 135 echo "LLVM pass         :       ${LLVMPASS}"
 136 echo "LLVM pass arguments       :       ${LLVMARGS}"
 137 echo "Target Minix modules      :       ${MINIX_MODS}"
 138 echo "OPTFLAGS value            :       ${OPTFLAGS}"
 139 echo
 140
 141 cd ${MINIX_ROOT}
 142
 143 for m in ${MINIX_MODS}
 144 do
 145         echo "Instrumenting $m ..."
 146         n=`get_module_name $m`
 147         if [ "" == "$n" ]; then
 148                 echo "Error: Couldn't fetch the module name for $m"
 149                 continue
 150         fi
 151         clean_module $n $m
 152         OPTFLAGS=`echo ${OPTFLAGS} | sed -e "s/\ /\\\ /g"`
 153         OPTFLAGS_PLACEHOLDER="OPTFLAGS.$n=${OPTFLAGS}"
 154
 155         (env "`echo ${OPTFLAGS_PLACEHOLDER}`" MKBITCODE=yes \
 156         ${TOOLDIR}/nbmake-${ARCH} -C $m all install && echo "INFO: $m successfully instrumented." ) || echo "ERROR: Failed instrumenting $m"
 157         echo
 158 done
 159
 160 cd ${MYPWD}