--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/R/rdyncall/R/dyncall.R	Thu Mar 19 22:26:28 2015 +0100
@@ -0,0 +1,78 @@
+# Package: rdyncall
+# File: R/dyncall.R
+# Description: dyncall bindings for R
+
+# ----------------------------------------------------------------------------
+# call vm alloc/free (internal)
+
+new.callvm <- function( 
+  callmode = c(
+    "cdecl",
+    "stdcall",
+    "thiscall","thiscall.gcc","thiscall.msvc",
+    "fastcall","fastcall.gcc","fastcall.msvc")
+, size = 4096 )
+{
+  callmode <- match.arg(callmode)
+  x <- .Call("new_callvm", callmode, as.integer(size), PACKAGE="rdyncall")
+  reg.finalizer(x, free.callvm)
+  return(x)
+}
+
+free.callvm <- function(x)
+{
+  .Call("free_callvm", x, PACKAGE="rdyncall")
+}
+
+# ----------------------------------------------------------------------------
+# CallVM's for calling conventions - will be initialized .onLoad
+
+callvm.default       <- callvm.cdecl         <- NULL
+callvm.stdcall       <- NULL
+callvm.thiscall      <- NULL
+callvm.thiscall.gcc  <- NULL
+callvm.thiscall.msvc <- NULL
+callvm.fastcall      <- NULL
+callvm.fastcall.gcc  <- NULL
+callvm.fastcall.msvc <- NULL
+
+# ----------------------------------------------------------------------------
+# public interface
+
+.dyncall <- function( address, signature, ... , callmode = "default" )
+{
+  callvm <- switch(callmode, 
+      default=callvm.default,
+      cdecl=callvm.cdecl, 
+      stdcall=callvm.stdcall, 
+      thiscall=,thiscall.gcc=callvm.thiscall.gcc, thiscall.msvc=callvm.thiscall.msvc, 
+      fastcall=,fastcall.gcc=callvm.fastcall.gcc, fastcall.msvc=callvm.fastcall.msvc)
+  .External("dyncall", callvm, address, signature, ..., PACKAGE="rdyncall")
+}
+
+.dyncall.cdecl <- function( address, signature, ... ) .External("dyncall", callvm.cdecl, address, signature, ..., PACKAGE="rdyncall")
+.dyncall.default <- function( address, signature, ... ) .External("dyncall", callvm.default, address, signature, ..., PACKAGE="rdyncall")
+.dyncall.stdcall <- function( address, signature, ... ) .External("dyncall", callvm.stdcall, address, signature, ..., PACKAGE="rdyncall")
+.dyncall.thiscall.gcc <- function( address, signature, ... ) .External("dyncall", callvm.thiscall.gcc, address, signature, ..., PACKAGE="rdyncall")
+.dyncall.thiscall.msvc <- function( address, signature, ... ) .External("dyncall", callvm.thiscall.msvc, address, signature, ..., PACKAGE="rdyncall")
+.dyncall.fastcall.gcc <- function( address, signature, ... ) .External("dyncall", callvm.fastcall.gcc, address, signature, ..., PACKAGE="rdyncall")
+.dyncall.fastcall.msvc <- function( address, signature, ... ) .External("dyncall", callvm.fastcall.msvc, address, signature, ..., PACKAGE="rdyncall")
+
+.dyncall.thiscall <- .dyncall.thiscall.gcc
+.dyncall.fastcall <- .dyncall.fastcall.gcc
+
+# ----------------------------------------------------------------------------
+# initialize callvm's on load
+
+.onLoad <- function(libname,pkgname)
+{
+  callvm.cdecl         <<- new.callvm("cdecl")
+  callvm.default       <<- callvm.cdecl
+  callvm.stdcall       <<- new.callvm("stdcall")
+  callvm.thiscall      <<- new.callvm("thiscall")
+  callvm.thiscall.gcc  <<- new.callvm("thiscall.gcc")
+  callvm.thiscall.msvc <<- new.callvm("thiscall.msvc")
+  callvm.fastcall      <<- new.callvm("fastcall")
+  callvm.fastcall.gcc  <<- new.callvm("fastcall.gcc")
+  callvm.fastcall.msvc <<- new.callvm("fastcall.msvc")
+}