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 echo '#include "Trampoline.hpp"'
  26
  27 for arch in $(echo "${detailed}" | "${sed}" -e '/^architecture / { s/^architecture //; p; }; d;'); do
  28     offset=$(echo "${detailed}" | "${sed}" -e '
  29         /^architecture / { x; s/.*/0/; x; };
  30         /^architecture '${arch}'$/ { x; s/.*/1/; x; };
  31         x; /^1$/ { x; /^ *offset / { s/^ *offset //; p; }; x; }; x;
  32         d;
  33     ')
  34
  35     file=($("${otool}" -arch "${arch}" -l "${object}" | "${sed}" -e '
  36         x; /^1$/ { x;
  37             /^ *fileoff / { s/^.* //; p; };
  38             /^ *filesize / { s/^.* //; p; };
  39         x; }; x;
  40
  41         /^ *cmd LC_SEGMENT/ { x; s/.*/1/; x; };
  42
  43         d;
  44     '))
  45
  46     fileoff=${file[0]}
  47     filesize=${file[1]}
  48
  49     echo
  50     echo "static const char ${name}_${arch}_data_[] = {"
  51
  52     od -v -t x1 -t c -j "$((offset + fileoff))" -N "${filesize}" "${object}" | "${sed}" -e '
  53         /^[0-7]/ ! {
  54             s@^        @//  @;
  55             s/\(....\)/ \1/g;
  56             s@^ // @//@;
  57             s/ *$/,/;
  58         };
  59
  60         /^[0-7]/ {
  61             s/^[^ ]*//;
  62             s/  */ /g;
  63             s/^ *//;
  64             s/ $//;
  65             s/ /,/g;
  66             s/\([^,][^,]\)/0x\1/g;
  67             s/$/,/;
  68             /^,$/ ! { s/^/    /g; p; }; d;
  69         };
  70     '
  71
  72     echo "};"
  73
  74     echo
  75     entry=$("${nm}" -arch "${arch}" "${object}" | "${sed}" -e '/ _Start$/ { s/ .*//; p; }; d;')
  76     entry=${entry##*(0)}
  77     echo "static size_t ${name}_${arch}_entry_ = 0x${entry:=0};"
  78
  79     echo
  80     echo "/*"
  81     "${otool}" -vVt -arch "${arch}" "${object}"
  82     echo "*/"
  83
  84     echo
  85     echo "static Trampoline ${name}_${arch}_ = {"
  86     echo "    ${name}_${arch}_data_,"
  87     echo "    sizeof(${name}_${arch}_data_),"
  88     echo "    ${name}_${arch}_entry_,"
  89     echo "};"
  90 done
  91
  92 } >"${hpp}"
  93
  94 #rm -f "${object}"