--- libcoro/coro.h	2001/07/24 20:18:12	1.4
+++ libcoro/coro.h	2005/01/12 20:35:35	1.8
@@ -30,7 +30,7 @@
  * go to Ralf S. Engelschall <rse@engelschall.com>.
  *
  * This coroutine library is very much stripped down. You should either
- * build your own process avstraction using it or - better - just use GNU
+ * build your own process abstraction using it or - better - just use GNU
  * Portable Threads, http://www.gnu.org/software/pth/.
  *
  * VERSION: 0.1
@@ -73,6 +73,10 @@
  *    this automatically selects a suitable workaround for this platform.
  *    (untested)
  *
+ * -DCORO_IRIX
+ *
+ *    SGI's version of Microsoft's NT ;)
+ *
  * If you define neither of these symbols, coro.h will try to autodetect
  * the model.  This currently works for CORO_LOOSE only. For the other
  * alternatives you should check (e.g. using autoconf) and define the
@@ -80,11 +84,10 @@
  */
 
 /*
- * This is the type for the top function of a new coroutine.
+ * This is the type for the initialization function of a new coroutine.
  */
 typedef void (*coro_func)(void *);
 
-
 /*
  * A coroutine state is saved in the following structure. Treat it as a
  * opaque type. errno and sigmask might be saved, but don't rely on it,
@@ -100,9 +103,9 @@
  * Allocating/deallocating the stack is your own responsibility, so there is
  * no coro_destroy function.
  */
-void coro_create(coro_context *ctx,
-                 coro_func coro, void *arg,
-                 void *sptr, long ssize);
+void coro_create (coro_context *ctx,
+                  coro_func coro, void *arg,
+                  void *sptr, long ssize);
 
 /*
  * The following prototype defines the coroutine switching function. It is
@@ -115,8 +118,11 @@
  * That was it. No other user-visible functions are implemented here.
  */
 
+/*****************************************************************************/
+
 #if !defined(CORO_LOOSE) && !defined(CORO_UCONTEXT) \
-    && !defined(CORO_SJLJ) && !defined(CORO_LINUX)
+    && !defined(CORO_SJLJ) && !defined(CORO_LINUX) \
+    && !defined(CORO_IRIX)
 # if defined(WINDOWS)
 #  define CORO_LOOSE 1 /* you don't win with windoze */
 # elif defined(__linux) && defined(__x86)
@@ -129,6 +135,8 @@
 # endif
 #endif
 
+/*****************************************************************************/
+
 #if CORO_UCONTEXT
 
 #include <ucontext.h>
@@ -137,9 +145,13 @@
   ucontext_t uc;
 };
 
-#define coro_transfer(p,n) swapcontext(&((p)->uc), &((n)->uc))
+#define coro_transfer(p,n) swapcontext (&((p)->uc), &((n)->uc))
+
+#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX || CORO_IRIX
 
-#elif CORO_SJLJ || CORO_LOOSE || CORO_LINUX
+#ifdef CORO_LINUX
+# define _GNU_SOURCE // for linux libc
+#endif
 
 #include <setjmp.h>
 
@@ -147,7 +159,7 @@
   jmp_buf env;
 };
 
-#define coro_transfer(p,n) if (!setjmp ((p)->env)) longjmp ((n)->env, 1)
+#define coro_transfer(p,n) do { if (!setjmp ((p)->env)) longjmp ((n)->env, 1); } while(0)
 
 #endif