src/share/vm/oops/method.cpp
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*** old/src/share/vm/oops/method.cpp	Thu Jul 17 13:48:41 2014
--- new/src/share/vm/oops/method.cpp	Thu Jul 17 13:48:40 2014

*** 238,275 **** --- 238,277 ---- return; } int Method::bci_from(address bcp) const { + if (is_native() && bcp == 0) { + return 0; + } #ifdef ASSERT { ResourceMark rm; assert(is_native() && bcp == code_base() || contains(bcp) || is_error_reported(), err_msg("bcp doesn't belong to this method: bcp: " INTPTR_FORMAT ", method: %s", bcp, name_and_sig_as_C_string())); } #endif return bcp - code_base(); } // Return (int)bcx if it appears to be a valid BCI. // Return bci_from((address)bcx) if it appears to be a valid BCP. + int Method::validate_bci(int bci) const { + return (bci == 0 || bci < code_size()) ? bci : -1; + } + + // Return bci if it appears to be a valid bcp // Return -1 otherwise. // Used by profiling code, when invalid data is a possibility. // The caller is responsible for validating the Method* itself. ! int Method::validate_bci_from_bcx(intptr_t bcx) const { ! int Method::validate_bci_from_bcp(address bcp) const { // keep bci as -1 if not a valid bci int bci = -1; ! if (bcx == 0 || (address)bcx == code_base()) { ! if (bcp == 0 || bcp == code_base()) { // code_size() may return 0 and we allow 0 here // the method may be native bci = 0; ! } else if (frame::is_bci(bcx)) { if (bcx < code_size()) { bci = (int)bcx; } } else if (contains((address)bcx)) { bci = (address)bcx - code_base(); ! } else if (contains(bcp)) { + bci = bcp - code_base(); } // Assert that if we have dodged any asserts, bci is negative. assert(bci == -1 || bci == bci_from(bcp_from(bci)), "sane bci if >=0"); return bci; }

src/share/vm/oops/method.cpp
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