Last change
on this file since 87361de 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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Rev | Line | |
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[87361de] | 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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