- pth_sksize_makecontext(context->stack, CONTEXT_STACK_SIZE);
-
-#ifdef HAVE_VALGRIND_VALGRIND_H
- context->valgrind_stack_id =
- VALGRIND_STACK_REGISTER(context->uc.uc_stack.ss_sp,
- ((char *) context->uc.uc_stack.ss_sp) +
- context->uc.uc_stack.ss_size);
-#endif /* HAVE_VALGRIND_VALGRIND_H */
- ctx_addr = (uintptr_t)context;
- /* This switch select a case base on a static value: the compiler optimizes it out */
- /* It could be replaced by a set of #ifdef/#else/#endif blocks */
- switch(sizeof(uintptr_t) / sizeof(int)) {
- case 1:
- makecontext(&((smx_ctx_sysv_t) context)->uc, (void (*)())smx_ctx_sysv_wrapper,
- 2, 1, (int)ctx_addr);
- break;
- case 2:
- makecontext(&((smx_ctx_sysv_t) context)->uc, (void (*)())smx_ctx_sysv_wrapper,
- 3, 2, (int)(ctx_addr >> (8 * sizeof(int))), (int)(ctx_addr));
- break;
- default:
- THROW_IMPOSSIBLE;
+ pth_sksize_makecontext(context->stack, smx_context_usable_stack_size);
+
+ memcpy(ctx_addr, &context, sizeof(smx_ctx_sysv_t));
+ switch (CTX_ADDR_LEN) {
+ case 1:
+ makecontext(&context->uc, (void (*)())smx_ctx_sysv_wrapper,
+ 1, ctx_addr[0]);
+ break;
+ case 2:
+ makecontext(&context->uc, (void (*)())smx_ctx_sysv_wrapper,
+ 2, ctx_addr[0], ctx_addr[1]);
+ break;
+ default:
+ xbt_die("Ucontexts are not supported on this arch yet (addr len = %zu/%zu = %zu)",
+ sizeof(smx_ctx_sysv_t), sizeof(int), CTX_ADDR_LEN);