--- libcoro/coro.h	2008/11/08 13:42:28	1.35
+++ libcoro/coro.h	2008/11/16 00:55:41	1.39
@@ -65,6 +65,8 @@
  *            do not rely on makecontext passing a void * correctly.
  *            try harder to get _setjmp/_longjmp.
  *            major code cleanup/restructuring.
+ * 2008-11-10 the .cfi hacks are no longer needed.
+ * 2008-11-16 work around a freebsd pthread bug.
  */
 
 #ifndef CORO_H
@@ -116,11 +118,13 @@
  * -DCORO_ASM
  *
  *    Handcoded assembly, known to work only on a few architectures/ABI:
- *    ELF Linux x86 && amd64 when gcc is used and optimisation is turned on.
+ *    GCC + x86/IA32 and amd64/x86_64 + GNU/Linux and a few BSDs.
  *
  * -DCORO_PTHREAD
  *
  *    Use the pthread API. You have to provide <pthread.h> and -lpthread.
+ *    This is likely the slowest backend, and it also does not support fork(),
+ *    so avoid it at all costs.
  *
  * If you define neither of these symbols, coro.h will try to autodetect
  * the model. This currently works for CORO_LOSER only. For the other
@@ -148,7 +152,7 @@
  * Allocating/deallocating the stack is your own responsibility.
  *
  * As a special case, if coro, arg, sptr and ssize are all zero,
- * then an "empty" coro_contetx will be created that is suitable
+ * then an "empty" coro_context will be created that is suitable
  * as an initial source for coro_transfer.
  *
  * This function is not reentrant, but putting a mutex around it
@@ -173,7 +177,9 @@
 /*
  * The following prototype defines the coroutine destroy function. It is
  * usually implemented as a macro, so watch out. It also serves
- * no purpose unless you want to use the CORO_PTHREAD backend.
+ * no purpose unless you want to use the CORO_PTHREAD backend,
+ * where it is used to clean up the thread. You are responsible
+ * for freeing the stack and the context itself.
  *
  * This function is thread-safe and reentrant.
  */
@@ -227,6 +233,12 @@
 #  include <unistd.h>
 # endif
 
+/* solaris is hopelessly borked, it expands _XOPEN_UNIX to nothing */
+# if __sun
+#  undef _XOPEN_UNIX
+#  define _XOPEN_UNIX 1
+# endif
+
 # include <setjmp.h>
 
 struct coro_context {