beginnings of full TLS support in shared libraries

this code will not work yet because the necessary relocations are not
supported, and cannot be supported without some internal changes to
how relocation processing works (coming soon).

1 files changed, 10 insertions, 0 deletions

diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index 4e0b9f4e..774ab849 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -654,6 +654,16 @@ void *__copy_tls(unsigned char *mem, size_t cnt)
 	return mem;
 }
 
+void *__tls_get_addr(size_t *p)
+{
+	pthread_t self = __pthread_self();
+	if ((size_t)self->dtv[0] < p[0]) {
+		// FIXME: obtain new DTV and TLS from the DSO
+		a_crash();
+	}
+	return (char *)self->dtv[p[0]] + p[1];
+}
+
 void *__dynlink(int argc, char **argv)
 {
 	size_t aux[AUX_CNT] = {0};