trampoline.sh

   1 #!/bin/bash
   2
   3 set -e
   4
   5 shopt -s extglob
   6
   7 hpp=$1
   8 object=$2
   9 name=$3
  10 sed=$4
  11 otool=$5
  12 lipo=$6
  13 nm=$7
  14 shift 7
  15
  16 #shift 1
  17 #set /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 -I/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.3.sdk/usr/include "$@"
  18
  19 "$@"
  20
  21 detailed=$("${lipo}" -detailed_info "${object}")
  22
  23 {
  24
  25 regex=$'\nNon-fat file: .* is architecture: (.*)'
  26 if [[ ${detailed} =~ ${regex} ]]; then
  27     archs=(${BASH_REMATCH[1]})
  28     unset detailed
  29 else
  30     archs=($(echo "${detailed}" | "${sed}" -e '/^architecture / { s/^architecture //; p; }; d;'))
  31 fi
  32
  33 echo '#include "Trampoline.hpp"'
  34
  35 for arch in "${archs[@]}"; do
  36     if [[ "${detailed+@}" ]]; then
  37         offset=$(echo "${detailed}" | "${sed}" -e '
  38             /^architecture / { x; s/.*/0/; x; };
  39             /^architecture '${arch}'$/ { x; s/.*/1/; x; };
  40             x; /^1$/ { x; /^ *offset / { s/^ *offset //; p; }; x; }; x;
  41             d;
  42         ')
  43     else
  44         offset=0
  45     fi
  46
  47     file=($("${otool}" -arch "${arch}" -l "${object}" | "${sed}" -e '
  48         x; /^1$/ { x;
  49             /^ *fileoff / { s/^.* //; p; };
  50             /^ *filesize / { s/^.* //; p; };
  51         x; }; x;
  52
  53         /^ *cmd LC_SEGMENT/ { x; s/.*/1/; x; };
  54
  55         d;
  56     '))
  57
  58     fileoff=${file[0]}
  59     filesize=${file[1]}
  60
  61     echo
  62     echo "static const char ${name}_${arch}_data_[] = {"
  63
  64     od -v -t x1 -t c -j "$((offset + fileoff))" -N "${filesize}" "${object}" | "${sed}" -e '
  65         /^[0-7]/ ! {
  66             s@^        @//  @;
  67             s/\(....\)/ \1/g;
  68             s@^ // @//@;
  69             s/ *$/,/;
  70         };
  71
  72         /^[0-7]/ {
  73             s/^[^ ]*//;
  74             s/  */ /g;
  75             s/^ *//;
  76             s/ $//;
  77             s/ /,/g;
  78             s/\([^,][^,]\)/0x\1/g;
  79             s/$/,/;
  80             /^,$/ ! { s/^/    /g; p; }; d;
  81         };
  82     '
  83
  84     echo "};"
  85
  86     echo
  87     entry=$("${nm}" -arch "${arch}" "${object}" | "${sed}" -e '/ _Start$/ { s/ .*//; p; }; d;')
  88     entry=${entry##*(0)}
  89     echo "static size_t ${name}_${arch}_entry_ = 0x${entry:=0};"
  90
  91     echo
  92     echo "/*"
  93     "${otool}" -vVt -arch "${arch}" "${object}"
  94     echo "*/"
  95
  96     echo
  97     echo "static Trampoline ${name}_${arch}_ = {"
  98     echo "    ${name}_${arch}_data_,"
  99     echo "    sizeof(${name}_${arch}_data_),"
 100     echo "    ${name}_${arch}_entry_,"
 101     echo "};"
 102 done
 103
 104 } >"${hpp}"
 105
 106 #rm -f "${object}"