Move sources to src/ subdirectory.

1 files changed, 265 insertions, 0 deletions

diff --git a/src/translate/grt/config/win32.c b/src/translate/grt/config/win32.c
new file mode 100644
index 0000000..35322ba
--- /dev/null
+++ b/src/translate/grt/config/win32.c
@@ -0,0 +1,265 @@
+/*  GRT stack implementation for Win32 using fibers.
+    Copyright (C) 2005 - 2014 Tristan Gingold.
+
+    GHDL is free software; you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation; either version 2, or (at your option) any later
+    version.
+
+    GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with GCC; see the file COPYING.  If not, write to the Free
+    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+    02111-1307, USA.
+
+    As a special exception, if other files instantiate generics from this
+    unit, or you link this unit with other files to produce an executable,
+    this unit does not by itself cause the resulting executable to be
+    covered by the GNU General Public License. This exception does not
+    however invalidate any other reasons why the executable file might be
+    covered by the GNU Public License.
+*/
+
+#include <windows.h>
+#include <stdio.h>
+#include <setjmp.h>
+#include <assert.h>
+#include <excpt.h>
+
+static EXCEPTION_DISPOSITION
+ghdl_SEH_handler (struct _EXCEPTION_RECORD* ExceptionRecord,
+		  void *EstablisherFrame,
+		  struct _CONTEXT* ContextRecord,
+		  void *DispatcherContext);
+
+struct exception_registration
+{
+  struct exception_registration *prev;
+  void *handler;
+};
+
+struct stack_type
+{
+  LPVOID fiber; //  Win fiber.
+  void (*func)(void *);  // Function
+  void *arg; //  Function argument.
+};
+
+static struct stack_type main_stack_context;
+static struct stack_type *current;
+extern void grt_set_main_stack (struct stack_type *stack);
+
+void grt_stack_init(void)
+{
+  main_stack_context.fiber = ConvertThreadToFiber (NULL);
+  if (main_stack_context.fiber == NULL)
+    {
+      fprintf (stderr, "convertThreadToFiber failed (err=%lu)\n",
+	       GetLastError ());
+      abort ();
+    }
+  grt_set_main_stack (&main_stack_context);
+  current = &main_stack_context;
+}
+
+static VOID __stdcall
+grt_stack_loop (void *v_stack)
+{
+  struct stack_type *stack = (struct stack_type *)v_stack;
+  struct exception_registration er;
+  struct exception_registration *prev;
+
+  /* Get current handler.  */
+  asm ("mov %%fs:(0),%0" : "=r" (prev));
+
+  /* Build regisration.  */
+  er.prev = prev;
+  er.handler = ghdl_SEH_handler;
+
+  /* Register.  */
+  asm ("mov %0,%%fs:(0)" : : "r" (&er));
+
+  while (1)
+    {
+      (*stack->func)(stack->arg);
+    }
+}
+
+struct stack_type *
+grt_stack_create (void (*func)(void *), void *arg) 
+{
+  struct stack_type *res;
+
+  res = malloc (sizeof (struct stack_type));
+  if (res == NULL)
+    return NULL;
+  res->func = func;
+  res->arg = arg;
+  res->fiber = CreateFiber (0, &grt_stack_loop, res);
+  if (res->fiber == NULL)
+    {
+      free (res);
+      return NULL;
+    }
+  return res;
+}
+
+static int run_env_en;
+static jmp_buf run_env;
+static int need_longjmp;
+
+void
+grt_stack_switch (struct stack_type *to, struct stack_type *from)
+{
+  assert (current == from);
+  current = to;
+  SwitchToFiber (to->fiber);
+  if (from == &main_stack_context && need_longjmp)
+    {
+      /* We returned to do the longjump.  */
+      current = &main_stack_context;
+      longjmp (run_env, need_longjmp);
+    }
+}
+
+void
+grt_stack_delete (struct stack_type *stack)
+{
+  DeleteFiber (stack->fiber);
+  stack->fiber = NULL;
+}
+
+void
+__ghdl_maybe_return_via_longjump (int val)
+{
+  if (!run_env_en)
+    return;
+
+  if (current != &main_stack_context)
+    {
+      /* We are allowed to jump only in the same stack.
+	 First switch back to the main thread.  */
+      need_longjmp = val;
+      SwitchToFiber (main_stack_context.fiber);
+    }
+  else
+    longjmp (run_env, val);
+}
+
+extern void grt_stack_error_grow_failed (void);
+extern void grt_stack_error_null_access (void);
+extern void grt_stack_error_memory_access (void);
+extern void grt_overflow_error (void);
+
+static EXCEPTION_DISPOSITION
+ghdl_SEH_handler (struct _EXCEPTION_RECORD* ExceptionRecord,
+		  void *EstablisherFrame,
+		  struct _CONTEXT* ContextRecord,
+		  void *DispatcherContext)
+{
+  const char *msg = "";
+
+  switch (ExceptionRecord->ExceptionCode)
+    {
+    case EXCEPTION_ACCESS_VIOLATION:
+      if (ExceptionRecord->ExceptionInformation[1] == 0)
+	grt_stack_error_null_access ();
+      else
+	grt_stack_error_memory_access ();
+      break;
+          
+    case EXCEPTION_FLT_DENORMAL_OPERAND:
+    case EXCEPTION_FLT_DIVIDE_BY_ZERO:
+    case EXCEPTION_FLT_INVALID_OPERATION:
+    case EXCEPTION_FLT_OVERFLOW:
+    case EXCEPTION_FLT_STACK_CHECK:
+    case EXCEPTION_FLT_UNDERFLOW:
+      msg = "floating point error";
+      break;
+     
+    case EXCEPTION_INT_DIVIDE_BY_ZERO:
+      msg = "division by 0";
+      break;
+     
+    case EXCEPTION_INT_OVERFLOW:
+      grt_overflow_error ();
+      break;
+           
+    case EXCEPTION_STACK_OVERFLOW:
+      msg = "stack overflow";
+      break;
+     
+    default:
+      msg = "unknown reason";
+      break;
+    }
+
+  /* FIXME: is it correct?  */
+  fprintf (stderr, "exception raised: %s\n", msg);
+
+  __ghdl_maybe_return_via_longjump (1);
+  return 0; /* This is never reached, avoid compiler warning  */
+}
+
+int
+__ghdl_run_through_longjump (int (*func)(void))
+{
+  int res;
+  struct exception_registration er;
+  struct exception_registration *prev;
+
+  /* Get current handler.  */
+  asm ("mov %%fs:(0),%0" : "=r" (prev));
+
+  /* Build regisration.  */
+  er.prev = prev;
+  er.handler = ghdl_SEH_handler;
+
+  /* Register.  */
+  asm ("mov %0,%%fs:(0)" : : "r" (&er));
+
+  run_env_en = 1;
+  res = setjmp (run_env);
+  if (res == 0)
+    res = (*func)();
+  run_env_en = 0;
+
+  /* Restore.  */
+  asm ("mov %0,%%fs:(0)" : : "r" (prev));
+
+  return res;
+}
+
+#include <math.h>
+
+double acosh (double x)
+{
+  return log (x + sqrt (x*x - 1));
+}
+
+double asinh (double x)
+{
+  return log (x + sqrt (x*x + 1));
+}
+
+double atanh (double x)
+{
+  return log ((1 + x) / (1 - x)) / 2;
+}
+
+#ifndef WITH_GNAT_RUN_TIME
+void __gnat_raise_storage_error(void)
+{
+   abort ();
+}
+
+void __gnat_raise_program_error(void)
+{
+   abort ();
+}
+#endif
+