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74 lines
2.7 KiB
Bash
Executable File
74 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: MIT
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#
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# Copyright (c) 2020 Eldred Habert
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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STATE=0
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diff <(xxd "$1") <(xxd "$2") | while read -r LINE; do
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if [[ $STATE -eq 0 ]]; then
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# Discard first line (line info)
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STATE=1
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elif [[ "$LINE" = '---' ]]; then
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# Separator between files switches states
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echo "$LINE"
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STATE=3
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elif grep -Eq '^[0-9]+(,[0-9]+)?[cd][0-9]+(,[0-9]+)?' <<< "$LINE"; then
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# Line info resets the whole thing
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STATE=1
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elif [[ $STATE -eq 1 || $STATE -eq 3 ]]; then
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# Compute the GB address from the ROM offset
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OFS=$(cut -d ' ' -f 2 <<< "$LINE" | tr -d ':')
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BANK=$((0x$OFS / 0x4000))
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ADDR=$((0x$OFS % 0x4000 + (BANK != 0) * 0x4000))
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# Try finding the preceding symbol closest to the diff
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if [[ $STATE -eq 1 ]]; then
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STATE=2
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SYMFILE=${1%.*}.sym
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else
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STATE=4
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SYMFILE=${2%.*}.sym
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fi
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EXTRA=$(if [[ -f "$SYMFILE" ]]; then
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# Read the sym file for such a symbol
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# Ignore comment lines, only pick matching bank
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# (The bank regex ignores comments already, make `cut` and `tr` process less lines)
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grep -Ei "$(printf "^%02x:" $BANK)" "$SYMFILE" |
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cut -d ';' -f 1 |
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tr -d "\r" |
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while read -r SYMADDR SYM; do
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SYMADDR=$((0x${SYMADDR#*:}))
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if [[ $SYMADDR -le $ADDR ]]; then
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printf " (%s+0x%x)\n" "$SYM" $((ADDR - SYMADDR))
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fi
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# TODO: assumes sorted sym files
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done | tail -n 1
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fi)
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printf "%02x:%04x %s\n" $BANK $ADDR "$EXTRA"
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fi
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if [[ $STATE -eq 2 || $STATE -eq 4 ]]; then
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OFS=$(cut -d ' ' -f 2 <<< "$LINE" | tr -d ':')
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BANK=$((0x$OFS / 0x4000))
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ADDR=$((0x$OFS % 0x4000 + (BANK != 0) * 0x4000))
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printf "%s %02x:%04x: %s\n" "${LINE:0:1}" $BANK $ADDR "${LINE#*: }"
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fi
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done
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