trampoline.sh

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