* Merged with default branch at rev 16f3633aaa5a.

[cacao.git] / src / vm / jit / m68k / emit.c

diff --git a/src/vm/jit/m68k/emit.c b/src/vm/jit/m68k/emit.c
index 1f93423d37c36b9b6e71676f37805a040240a8f1..f53e321908243d02abd547655ee457b1d68ca351 100644 (file)
--- a/src/vm/jit/m68k/emit.c
+++ b/src/vm/jit/m68k/emit.c
@@ -22,8 +22,6 @@
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
 
-   $Id: arch.h 5330 2006-09-05 18:43:12Z edwin $
-
 */
 
 
@@ -481,6 +479,74 @@ void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
        }
 }
 
+/* emit_replacement_stubs ******************************************************
+
+   Generates the code for the replacement stubs.
+
+*******************************************************************************/
+
+#if defined(ENABLE_REPLACEMENT)
+void emit_replacement_stubs(jitdata *jd)
+{
+       codegendata *cd;
+       codeinfo    *code;
+       rplpoint    *rplp;
+       s4           i;
+       s4           branchmpc;
+       s4           outcode;
+
+       /* get required compiler data */
+
+       cd   = jd->cd;
+       code = jd->code;
+
+       rplp = code->rplpoints;
+
+       /* store beginning of replacement stubs */
+
+       code->replacementstubs = (u1*) (cd->mcodeptr - cd->mcodebase);
+
+       for (i = 0; i < code->rplpointcount; ++i, ++rplp) {
+               /* do not generate stubs for non-trappable points */
+
+               if (rplp->flags & RPLPOINT_FLAG_NOTRAP)
+                       continue;
+
+               M_JSR_IMM(0);
+#if 0
+               /* check code segment size */
+
+               MCODECHECK(512);
+
+               /* note start of stub code */
+
+               outcode = (s4) (cd->mcodeptr - cd->mcodebase);
+
+               /* push address of `rplpoint` struct */
+                       
+               M_PUSH_IMM(rplp);
+
+               /* jump to replacement function */
+
+               M_PUSH_IMM(asm_replacement_out);
+               M_RET;
+
+               /* add jump reference for COUNTDOWN points */
+
+               if (rplp->flags & RPLPOINT_FLAG_COUNTDOWN) {
+
+                       branchmpc = (s4)rplp->pc + (7 + 6);
+
+                       md_codegen_patch_branch(cd, branchmpc, (s4) outcode);
+               }
+
+               assert(((cd->mcodeptr - cd->mcodebase) - outcode) == REPLACEMENT_STUB_SIZE);
+#endif
+       }
+}
+#endif /* defined(ENABLE_REPLACEMENT) */
+       
+
 
 #if !defined(NDEBUG)
 /*