* Removed all Id tags.

[cacao.git] / src / vm / jit / emit-common.c

diff --git a/src/vm/jit/emit-common.c b/src/vm/jit/emit-common.c
index c02566c5396a6db4f2efa38c1041c710087faa48..aa2f38997165a63b4ce578f3b4a9e64b36c51db3 100644 (file)
--- a/src/vm/jit/emit-common.c
+++ b/src/vm/jit/emit-common.c
@@ -22,14 +22,13 @@
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
 
-   $Id: emitfuncs.c 4398 2006-01-31 23:43:08Z twisti $
-
 */
 
 
 #include "config.h"
 
 #include <assert.h>
+#include <stdint.h>
 
 #include "vm/types.h"
 
@@ -38,6 +37,7 @@
 
 #include "vm/jit/emit-common.h"
 #include "vm/jit/jit.h"
+#include "vm/jit/patcher-common.h"
 
 #include "vmcore/options.h"
 #include "vmcore/statistics.h"
@@ -247,6 +247,53 @@ void emit_store_dst(jitdata *jd, instruction *iptr, s4 d)
 }
 
 
+/* emit_patcher_traps **********************************************************
+
+   Generates the code for the patcher traps.
+
+*******************************************************************************/
+
+void emit_patcher_traps(jitdata *jd)
+{
+       codegendata *cd;
+       codeinfo    *code;
+       patchref_t  *pr;
+       u1          *savedmcodeptr;
+       u1          *tmpmcodeptr;
+       uint32_t     mcode;
+
+       /* get required compiler data */
+
+       cd   = jd->cd;
+       code = jd->code;
+
+       /* generate patcher traps code */
+
+       for (pr = list_first_unsynced(code->patchers); pr != NULL; pr = list_next_unsynced(code->patchers, pr)) {
+
+               /* Calculate the patch position where the original machine
+                  code is located and the trap should be placed. */
+
+               tmpmcodeptr = (u1 *) (cd->mcodebase + pr->mpc);
+
+               /* Patch in the trap to call the signal handler (done at
+                  compile time). */
+
+               savedmcodeptr = cd->mcodeptr;   /* save current mcodeptr          */
+               cd->mcodeptr  = tmpmcodeptr;    /* set mcodeptr to patch position */
+
+               mcode = emit_trap(cd);
+
+               cd->mcodeptr = savedmcodeptr;   /* restore the current mcodeptr   */
+
+               /* Remember the original machine code which is patched
+                  back in later (done at runtime). */
+
+               pr->mcode = mcode;
+       }
+}
+
+
 /* emit_bccz *******************************************************************
 
    Emit conditional and unconditional branch instructions on integer