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5946d2eadc
When building DLLs on ARM64EC, the default use of `dumpbin -linkermember:1` fails because ARM64EC static libraries use a different linker member format. Use `-linkermember:32` for ARM64EC to correctly extract symbols. Additionally, MSVC inserts $exit_thunk and $entry_thunk symbols for ARM64EC to handle x64 ↔ ARM64 transitions. These are internal thunks and must not be exported. Filter them out when generating the .def file to avoid unresolved symbols or invalid exports. Trim out the leading '#' on ARM64EC function symbols. This is only relevant on ARM64EC, but it is benign to do that filtering on all architectures (such symbols aren't expected on other architectures). Simplify the sed command by removing the symbol address with a sed expression instead of a later "cut" command. This ensures correct symbol extraction and stable DLL generation on ARM64EC targets, while keeping behavior unchanged for other Windows architectures.
145 lines
3.5 KiB
Bash
Executable File
145 lines
3.5 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (c) 2013, Derek Buitenhuis
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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# mktemp isn't POSIX, so supply an implementation
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mktemp() {
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echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
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}
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if [ $# -lt 2 ]; then
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echo "Usage: makedef <version_script> <objects>" >&2
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exit 0
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fi
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vscript=$1
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shift
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if [ ! -f "$vscript" ]; then
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echo "Version script does not exist" >&2
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exit 1
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fi
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for object in "$@"; do
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if [ ! -f "$object" ]; then
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echo "Object does not exist: ${object}" >&2
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exit 1
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fi
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done
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# Create a lib temporarily to dump symbols from.
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# It's just much easier to do it this way
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libname=$(mktemp -u "library").lib
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trap 'rm -f -- $libname' EXIT
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if [ -n "$AR" ]; then
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$AR rcs ${libname} $@ >/dev/null
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else
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machine_flag=""
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case "$LDFLAGS" in
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*"machine:arm64ec"*)
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machine_flag="-machine:arm64ec"
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;;
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esac
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lib.exe ${machine_flag} -out:${libname} $@ >/dev/null
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fi
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if [ $? != 0 ]; then
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echo "Could not create temporary library." >&2
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exit 1
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fi
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IFS='
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'
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prefix="$EXTERN_PREFIX"
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started=0
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regex="none"
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for line in $(cat ${vscript} | tr '\t' ' '); do
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# We only care about global symbols
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echo "${line}" | grep -q '^ \+global:'
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if [ $? = 0 ]; then
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started=1
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line=$(echo "${line}" | sed -e 's/^ \{1,\}global: *//')
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else
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echo "${line}" | grep -q '^ \+local:'
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if [ $? = 0 ]; then
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started=0
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fi
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fi
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if [ ${started} = 0 ]; then
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continue
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fi
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# Handle multiple symbols on one line
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IFS=';'
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# Work around stupid expansion to filenames
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line=$(echo "${line}" | sed -e 's/\*/.\\+/g')
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for exp in ${line}; do
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# Remove leading and trailing whitespace
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exp=$(echo "${exp}" | sed -e 's/^ *//' -e 's/ *$//')
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if [ "${regex}" = "none" ]; then
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regex="${exp}"
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else
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regex="${regex};${exp}"
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fi
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done
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IFS='
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'
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done
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if [ -n "$NM" ]; then
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# Use eval, since NM="nm -g"
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dump=$(eval "$NM --defined-only -g ${libname}" |
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grep -v : |
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grep -v ^$ |
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cut -d' ' -f3 |
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sed -e "s/^${prefix}//" -e "s/^#//" |
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grep -v '\$entry_thunk' |
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grep -v '\$exit_thunk')
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else
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member=1
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case "$LDFLAGS" in
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*"machine:arm64ec"*)
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member=32
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;;
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esac
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dump=$(dumpbin.exe -linkermember:${member} ${libname} |
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sed -e '/public symbols/,$!d' -e '/^ \{1,\}Summary/,$d' -e 's/^[[:space:]]*[0-9A-Fa-f]\{1,\}[[:space:]]\{1,\}//' -e "s/^${prefix}//" -e 's/^#//' |
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tail -n +2 |
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grep -v '\$entry_thunk' |
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grep -v '\$exit_thunk')
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fi
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rm ${libname}
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IFS=';'
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list=""
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for exp in ${regex}; do
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list="${list}"'
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'$(echo "${dump}" |
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grep "^${exp}" |
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sed -e 's/^/ /')
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done
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echo "EXPORTS"
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echo "${list}" | sort | uniq | tail -n +2
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