Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: md.c 7355 2007-02-14 10:57:32Z twisti $
+ $Id: md.c 7596 2007-03-28 21:05:53Z twisti $
*/
}
-/* 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 */
-
- /* calculate the patch position */
-
- mcodeptr = (s4 *) (cd->mcodebase + branchmpc);
-
- /* get the instruction before the exception point */
-
- mcode = mcodeptr[-1];
-
- /* Calculate the branch displacement. For branches we need a
- displacement relative and shifted to the branch PC. */
-
- disp = (targetmpc - branchmpc) >> 2;
-
- /* check branch displacement */
-
- if ((disp < (s4) 0xffe00000) || (disp > (s4) 0x001fffff))
- vm_abort("branch displacement is out of range: %d > +/-%d", disp, 0x001fffff);
-
- /* patch the branch instruction before the mcodeptr */
-
- mcodeptr[-1] |= (disp & 0x001fffff);
-}
-
-
/* md_stacktrace_get_returnaddress *********************************************
Returns the return address of the current stackframe, specified by
}
#endif /* defined(ENABLE_REPLACEMENT) */
+
/*
* These are local overrides for various environment variables in Emacs.
* Please do not remove this and leave it at the end of the file, where