Last change
on this file since 6dbed52 was 87361de, checked in by Thomas Lopatic <thomas@…>, 7 years ago |
Prepend a header to midas.abs.
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-
Property mode
set to
100755
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File size:
1.3 KB
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1 | #!/bin/bash
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2 |
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3 | if [ -z "${1}" -o -z "${2}" ]; then
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4 | echo "usage: mkhd.sh cross-nm elf-file"
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5 | exit 1
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6 | fi
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7 |
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8 | CROSS_NM=${1}
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9 | ELF_FILE=${2}
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10 |
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11 | ${CROSS_NM} --help >/dev/null 2>&1
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12 |
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13 | if [ ${?} -ne 0 ]; then
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14 | echo "error while executing ${CROSS_NM}"
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15 | exit 1
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16 | fi
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17 |
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18 | if [ ! -e ${ELF_FILE} ]; then
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19 | echo "${ELF_FILE} does not exist"
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20 | exit 1
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21 | fi
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22 |
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23 | getsym() {
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24 | NAME=${1}
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25 | HEX=$(${CROSS_NM} ${ELF_FILE} | grep ' '${NAME}'$' | cut -c -8)
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26 | RET=$(printf '%d' 0x${HEX})
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27 | printf ' %7s %10s %6s\n' ${NAME} 0x${HEX} ${RET} >&2
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28 | }
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29 |
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30 | echo "creating header for ${ELF_FILE}'s sections:" >&2
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31 | echo >&2
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32 |
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33 | getsym _Lo_RAM; SYM_LO_RAM=${RET}
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34 | getsym _etext; SYM_ETEXT=${RET}
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35 | getsym _edata; SYM_EDATA=${RET}
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36 | getsym _end; SYM_END=${RET}
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37 |
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38 | echo >&2
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39 |
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40 | LEN_TEXT=$((${SYM_ETEXT} - ${SYM_LO_RAM}))
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41 | LEN_DATA=$((${SYM_EDATA} - ${SYM_ETEXT}))
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42 | LEN_BSS=$((${SYM_END} - ${SYM_EDATA}))
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43 |
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44 | out8() {
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45 | VAL8=${1}
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46 | HEX8=$(printf '%x' ${VAL8})
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47 | printf "\x${HEX8}"
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48 | }
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49 |
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50 | out16() {
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51 | VAL16=${1}
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52 | HI16=$((VAL16 / 256))
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53 | LO16=$((VAL16 % 256))
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54 | out8 ${HI16}
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55 | out8 ${LO16}
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56 | }
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57 |
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58 | out32() {
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59 | VAL32=${1}
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60 | HI32=$((VAL32 / 65536))
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61 | LO32=$((VAL32 % 65536))
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62 | out16 ${HI32}
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63 | out16 ${LO32}
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64 | }
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65 |
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66 | out16 24602
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67 | out32 ${LEN_TEXT}
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68 | out32 ${LEN_DATA}
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69 | out32 ${LEN_BSS}
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70 | out32 0
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71 | out32 0
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72 | out32 ${SYM_LO_RAM}
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73 | out16 65535
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