* Merged in twisti-branch.

[cacao.git] / src / vm / jit / mips / md.c

diff --git a/src/vm/jit/mips/md.c b/src/vm/jit/mips/md.c
index fedd7447247df8b0ce314a228ec0aea10858bbb7..b28f0bd26653321f34e9048e6752ecbdaf569f5a 100644 (file)
--- a/src/vm/jit/mips/md.c
+++ b/src/vm/jit/mips/md.c
@@ -22,7 +22,7 @@
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
 
-   $Id: md.c 7477 2007-03-07 14:05:04Z twisti $
+   $Id: md.c 7486 2007-03-08 13:50:07Z twisti $
 
 */
 
@@ -49,63 +49,6 @@
 #endif
 
 
-/* md_codegen_patch_branch *****************************************************
-
-   Back-patches a branch instruction.
-
-*******************************************************************************/
-
-void md_codegen_patch_branch(codegendata *cd, s4 branchmpc, s4 targetmpc)
-{
-       s4 *mcodeptr;
-       s4  mcode;
-       s4  disp;                           /* branch displacement                */
-       s4  lo;
-       s4  hi;
-
-       /* calculate the patch position */
-
-       mcodeptr = (s4 *) (cd->mcodebase + branchmpc);
-
-       /* get the instruction before the exception point */
-
-       mcode = mcodeptr[-1];
-
-       /* check for: ori t9,t9,0 */
-
-       if ((mcode >> 16) == 0x3739) {
-               /* Calculate the branch displacement.  For jumps we need a
-                  displacement relative to PV. */
-
-               disp = targetmpc;
-
-        lo = (short) disp;
-        hi = (short) ((disp - lo) >> 16);
-
-               /* patch the two instructions before the mcodeptr */
-
-               mcodeptr[-2] |= (hi & 0x0000ffff);
-               mcodeptr[-1] |= (lo & 0x0000ffff);
-       }
-       else {
-               /* Calculate the branch displacement.  For branches we need a
-                  displacement relative and shifted to the branch PC. */
-
-               disp = (targetmpc - branchmpc) >> 2;
-
-               /* On the MIPS we can only branch signed 16-bit instruction words
-                  (signed 18-bit = 32KB = +/- 16KB). Check this! */
-
-               if ((disp < (s4) 0xffff8000) || (disp > (s4) 0x00007fff))
-                       vm_abort("jump displacement is out of range: %d > +/-%d", disp, 0x00007fff);
-
-               /* patch the branch instruction before the mcodeptr */
-
-               mcodeptr[-1] |= (disp & 0x0000ffff);
-       }
-}
-
-
 /* md_stacktrace_get_returnaddress *********************************************
 
    Returns the return address of the current stackframe, specified by