diff dyncallback/dyncall_thunk_x86.c @ 0:3e629dc19168

initial from svn dyncall-1745
author Daniel Adler
date Thu, 19 Mar 2015 22:24:28 +0100
parents
children f5577f6bf97a
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dyncallback/dyncall_thunk_x86.c	Thu Mar 19 22:24:28 2015 +0100
@@ -0,0 +1,45 @@
+/*
+
+ Package: dyncall
+ Library: dyncallback
+ File: dyncallback/dyncall_thunk_x86.c
+ Description: Thunk - Implementation for x86
+ License:
+
+   Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>,
+                           Tassilo Philipp <tphilipp@potion-studios.com>
+
+   Permission to use, copy, modify, and distribute this software for any
+   purpose with or without fee is hereby granted, provided that the above
+   copyright notice and this permission notice appear in all copies.
+
+   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+
+#include "dyncall_thunk.h"
+
+void dcbInitThunk(DCThunk* p, void (*entry)())
+{
+  /*
+    x86 thunk code:
+      nop
+      nop
+      nop
+      mov %eax, p
+      jmp [%eax+12]
+      nop
+  */
+
+  p->code_load  = 0xb8909090UL; /* nop;nop;nop;mov %eax, ... */
+  p->addr_self  = p;
+  p->code_jump  = 0x900C60ffUL; /* jmp [%eax+12] ; nop */
+  p->addr_entry = entry;
+}