--- /dev/null
+/********************************************************************************
+ * Copyright (c) 2003, 2004 *
+ * Panagiotis E. Hadjidoukas (peh@hpclab.ceid.upatras.gr) *
+ * HPCLab - University of Patras. All Rights Reserved. *
+ * Unix ucontext_t on Windows Operating System, May 2004 (revision 1) *
+ * *
+ * The author disclaims all warranties with regard to this software including *
+ * all implied warranties of merchantability and fitness for a particular *
+ * purpose. In no event shall HPCLab be liable for any special, indirect, *
+ * or consequential damages or any damages whatsoever resulting from *
+ * loss of use, data or profits, whether in action of contract negligence, *
+ * or other tortious action, arising out of or in connection with the use *
+ * or performance of this software. *
+ ********************************************************************************/
+
+/* The original author granted me (Martin Quinson) to redistribute this work
+ under the LGPL licence, what I here do. */
+
+/*#include "context_win32.h" Not needed since this file is to be included*/
+
+int getcontext(ucontext_t *ucp)
+{
+ int ret;
+
+ /* Retrieve the full machine context */
+ ucp->uc_mcontext.ContextFlags = CONTEXT_FULL;
+ ret = GetThreadContext(GetCurrentThread(), &ucp->uc_mcontext);
+
+ return (ret == 0) ? -1: 0;
+}
+
+int setcontext(const ucontext_t *ucp)
+{
+ int ret;
+
+ /* Restore the full machine context (already set) */
+ ret = SetThreadContext(GetCurrentThread(), &ucp->uc_mcontext);
+
+ return (ret == 0) ? -1: 0;
+}
+
+int makecontext(ucontext_t *ucp, void (*func)(), int argc, ...)
+{
+ int i;
+ va_list ap;
+ char *sp;
+
+ /* Stack grows down */
+ sp = (char *) (size_t) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size;
+
+ /* Reserve stack space for the arguments (maximum possible: argc*(8 bytes per argument)) */
+ sp -= argc*8;
+
+ if ( sp < (char *)ucp->uc_stack.ss_sp) {
+ /* errno = ENOMEM;*/
+ return -1;
+ }
+
+ /* Set the instruction and the stack pointer */
+ ucp->uc_mcontext.Eip = (unsigned long) func;
+ ucp->uc_mcontext.Esp = (unsigned long) sp - 4;
+
+ /* Save/Restore the full machine context */
+ ucp->uc_mcontext.ContextFlags = CONTEXT_FULL;
+
+ /* Copy the arguments */
+ va_start (ap, argc);
+ for (i=0; i<argc; i++) {
+ memcpy(sp, ap, 8);
+ ap +=8;
+ sp += 8;
+ }
+ va_end(ap);
+
+ return 0;
+}
+
+int swapcontext(ucontext_t *oucp, const ucontext_t *ucp)
+{
+ int ret;
+
+ if ((oucp == NULL) || (ucp == NULL)) {
+ /*errno = EINVAL;*/
+ return -1;
+ }
+
+ ret = getcontext(oucp);
+ if (ret == 0) {
+ ret = setcontext(ucp);
+ }
+ return ret;
+}
--- /dev/null
+/********************************************************************************
+ * Copyright (c) 2003, 2004 *
+ * Panagiotis E. Hadjidoukas (peh@hpclab.ceid.upatras.gr) *
+ * HPCLab - University of Patras. All Rights Reserved. *
+ * Unix ucontext_t on Windows Operating System, May 2004 (revision 1) *
+ * *
+ * The author disclaims all warranties with regard to this software including *
+ * all implied warranties of merchantability and fitness for a particular *
+ * purpose. In no event shall HPCLab be liable for any special, indirect, *
+ * or consequential damages or any damages whatsoever resulting from *
+ * loss of use, data or profits, whether in action of contract negligence, *
+ * or other tortious action, arising out of or in connection with the use *
+ * or performance of this software. *
+ ********************************************************************************/
+
+/* The original author granted me (Martin Quinson) to redistribute this work
+ under the LGPL licence, what I here do. */
+
+#ifndef UCONTEXT_H
+#define UCONTEXT_H
+
+#include <windows.h>
+
+typedef struct __stack {
+ void *ss_sp;
+ size_t ss_size;
+ int ss_flags;
+} stack_t;
+
+typedef CONTEXT mcontext_t;
+typedef unsigned long __sigset_t;
+
+typedef struct __ucontext {
+ unsigned long int uc_flags;
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+ __sigset_t uc_sigmask;
+} ucontext_t;
+
+
+int getcontext(ucontext_t *ucp);
+int setcontext(const ucontext_t *ucp);
+int makecontext(ucontext_t *, void (*)(), int, ...);
+int swapcontext(ucontext_t *, const ucontext_t *);
+
+#endif /* UCONTEXT_H */
