From 04216cadb1bb9e3737398e40eaf110c855f595dd Mon Sep 17 00:00:00 2001
From: "Guillermo J. Rozas" <edu/mit/csail/zurich/gjr>
Date: Sat, 28 Aug 1993 05:41:26 +0000
Subject: [PATCH] Initial revision

---
 v7/src/microcode/pruxdld.c | 119 +++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 v7/src/microcode/pruxdld.c

diff --git a/v7/src/microcode/pruxdld.c b/v7/src/microcode/pruxdld.c
new file mode 100644
index 000000000..78954725a
--- /dev/null
+++ b/v7/src/microcode/pruxdld.c
@@ -0,0 +1,119 @@
+/* -*-C-*-
+
+$Id: pruxdld.c,v 1.1 1993/08/28 05:41:26 gjr Exp $
+
+Copyright (c) 1993 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science.  Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. */
+
+/* This file contains the interface to the HP-UX (SunOS-style)
+   dynamic loader.
+   It has only been tried under HP-UX.
+ */
+
+#include <dl.h>
+#include "scheme.h"
+#include "prims.h"
+#include "usrdef.h"
+#include "syscall.h"
+
+#ifndef DYNAMIC_PATH
+# define DYNAMIC_PATH 0
+#endif
+
+static short shl_findsym_types [] =
+{
+  TYPE_PROCEDURE,
+  TYPE_DATA,
+  TYPE_UNDEFINED
+};
+
+DEFINE_PRIMITIVE ("LOAD-OBJECT-FILE", Prim_load_object_file, 1, 1,
+		  "(load-object-file lib-file)")
+{
+  extern int errno;
+  shl_t prim_lib_handle;
+  PRIMITIVE_HEADER (1);
+
+  prim_lib_handle = (shl_load ((STRING_ARG (1)),
+			       (BIND_IMMEDIATE | BIND_NONFATAL | DYNAMIC_PATH),
+			       0));
+  if (prim_lib_handle == NULL)
+    error_system_call (errno, syscall_dld);
+  PRIMITIVE_RETURN (long_to_integer ((long) prim_lib_handle));
+}
+
+DEFINE_PRIMITIVE ("OBJECT-LOOKUP-SYMBOL", Prim_object_lookup_symbol, 3, 3,
+		  "(object-lookup-symbol handle sym type)")
+{
+  char * sym;
+  short type;
+  unsigned long result;
+  shl_t prim_lib_handle, * arg_handle;
+  PRIMITIVE_HEADER (3);
+
+  switch (ARG_REF (1))
+  {
+    case SHARP_F:
+      prim_lib_handle = PROG_HANDLE;
+      arg_handle = & prim_lib_handle;
+      break;
+
+    case SHARP_T:
+      arg_handle = ((shl_t *) NULL);
+      break;
+
+    default:
+      prim_lib_handle = ((shl_t) (arg_integer (1)));
+      arg_handle = & prim_lib_handle;
+      break;
+  }
+
+  sym = (STRING_ARG (2));
+  type = shl_findsym_types [arg_index_integer (3, ((sizeof (shl_findsym_types))
+						   / (sizeof (short))))];
+
+  if ((shl_findsym (arg_handle, sym, type, ((void *) & result)))
+      == -1)
+    PRIMITIVE_RETURN (SHARP_F);
+  PRIMITIVE_RETURN (long_to_integer (result));
+}
+
+DEFINE_PRIMITIVE ("INVOKE-C-THUNK", Prim_invoke_C_thunk, 1, 1,
+		  "(invoke-C-thunk address)")
+{
+  long address;
+  void EXFUN ((* thunk), (void));
+  PRIMITIVE_HEADER (1);
+  
+  address = (arg_integer (1));
+  thunk = ((void (*) ()) address);
+  (* thunk) ();
+  PRIMITIVE_RETURN (UNSPECIFIC);
+}
-- 
2.25.1