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plugin: add API symbols to qemu-plugins.symbols

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Signed-off-by: Emilio G. Cota <cota@braap.org>
[AJB: moved into plugins]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Emilio G. Cota 2018-10-21 13:56:29 -04:00 • committed by Alex Bennée
parent 40e8c6f48a
commit 26fffe29c0
5 changed files with 133 additions and 0 deletions
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72
configure vendored
View file

@ -30,6 +30,7 @@ TMPO="${TMPDIR1}/${TMPB}.o"
TMPCXX="${TMPDIR1}/${TMPB}.cxx"
TMPE="${TMPDIR1}/${TMPB}.exe"
TMPMO="${TMPDIR1}/${TMPB}.mo"
TMPTXT="${TMPDIR1}/${TMPB}.txt"
rm -f config.log
@ -5476,6 +5477,61 @@ if compile_prog "" "" ; then
atomic64=yes
fi
#########################################
# See if --dynamic-list is supported by the linker
ld_dynamic_list="no"
if test "$static" = "no" ; then
cat > $TMPTXT <<EOF
{
foo;
};
EOF
cat > $TMPC <<EOF
#include <stdio.h>
void foo(void);
void foo(void)
{
printf("foo\n");
}
int main(void)
{
foo();
return 0;
}
EOF
if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then
ld_dynamic_list="yes"
fi
fi
#########################################
# See if -exported_symbols_list is supported by the linker
ld_exported_symbols_list="no"
if test "$static" = "no" ; then
cat > $TMPTXT <<EOF
_foo
EOF
if compile_prog "" "-Wl,-exported_symbols_list,$TMPTXT" ; then
ld_exported_symbols_list="yes"
fi
fi
if test "$plugins" = "yes" &&
test "$ld_dynamic_list" = "no" &&
test "$ld_exported_symbols_list" = "no" ; then
error_exit \
"Plugin support requires dynamic linking and specifying a set of symbols " \
"that are exported to plugins. Unfortunately your linker doesn't " \
"support the flag (--dynamic-list or -exported_symbols_list) used " \
"for this purpose. You can't build with --static."
fi
########################################
# See if 16-byte vector operations are supported.
# Even without a vector unit the compiler may expand these.
@ -7283,6 +7339,22 @@ fi
if test "$plugins" = "yes" ; then
echo "CONFIG_PLUGIN=y" >> $config_host_mak
LIBS="-ldl $LIBS"
# Copy the export object list to the build dir
if test "$ld_dynamic_list" = "yes" ; then
echo "CONFIG_HAS_LD_DYNAMIC_LIST=yes" >> $config_host_mak
ld_symbols=qemu-plugins-ld.symbols
cp "$source_path/plugins/qemu-plugins.symbols" $ld_symbols
elif test "$ld_exported_symbols_list" = "yes" ; then
echo "CONFIG_HAS_LD_EXPORTED_SYMBOLS_LIST=yes" >> $config_host_mak
ld64_symbols=qemu-plugins-ld64.symbols
echo "# Automatically generated by configure - do not modify" > $ld64_symbols
grep 'qemu_' "$source_path/plugins/qemu-plugins.symbols" | sed 's/;//g' | \
sed -E 's/^[[:space:]]*(.*)/_\1/' >> $ld64_symbols
else
error_exit \
"If \$plugins=yes, either \$ld_dynamic_list or " \
"\$ld_exported_symbols_list should have been set to 'yes'."
fi
fi
if test "$tcg_interpreter" = "yes"; then