diff options
| -rw-r--r-- | lib/csu/i386/c++rt0.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/lib/csu/i386/c++rt0.c b/lib/csu/i386/c++rt0.c index 94fa5c5..413524f 100644 --- a/lib/csu/i386/c++rt0.c +++ b/lib/csu/i386/c++rt0.c @@ -27,7 +27,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id$ + * $Id: c++rt0.c,v 1.7 1997/02/22 14:57:42 peter Exp $ */ /* @@ -38,8 +38,8 @@ * number of pointers in each. * The tables are also null-terminated. */ -void (*__CTOR_LIST__[2])(void); -void (*__DTOR_LIST__[2])(void); +extern void (*__CTOR_LIST__[])(void); +extern void (*__DTOR_LIST__[])(void); static void __dtors(void) @@ -84,3 +84,24 @@ __fini(void) { __dtors(); } + +/* + * Make sure there is at least one constructor and one destructor in the + * shared library. Otherwise, the linker does not realize that the + * constructor and destructor lists are linker sets. It treats them as + * commons and resolves them to the lists from the main program. That + * causes multiple invocations of the main program's static constructors + * and destructors, which is very bad. + */ + +static void +do_nothing(void) +{ +} + +/* Linker magic to add an element to a constructor or destructor list. */ +#define TEXT_SET(set, sym) \ + asm(".stabs \"_" #set "\", 23, 0, 0, _" #sym) + +TEXT_SET(__CTOR_LIST__, do_nothing); +TEXT_SET(__DTOR_LIST__, do_nothing); |
