1.1 --- a/src/share/vm/c1/c1_Runtime1.cpp Wed Sep 06 00:35:24 2017 -0700
1.2 +++ b/src/share/vm/c1/c1_Runtime1.cpp Thu May 24 18:41:44 2018 +0800
1.3 @@ -22,6 +22,12 @@
1.4 *
1.5 */
1.6
1.7 +/*
1.8 + * This file has been modified by Loongson Technology in 2015. These
1.9 + * modifications are Copyright (c) 2015 Loongson Technology, and are made
1.10 + * available on the same license terms set forth above.
1.11 + */
1.12 +
1.13 #include "precompiled.hpp"
1.14 #include "asm/codeBuffer.hpp"
1.15 #include "c1/c1_CodeStubs.hpp"
1.16 @@ -972,11 +978,31 @@
1.17 // .... <-- call destination
1.18
1.19 address stub_location = caller_frame.pc() + PatchingStub::patch_info_offset();
1.20 +
1.21 +#if defined(MIPS32) && defined(_LP64)
1.22 +/* Jin: In MIPS64, byte_skip is much larger than that in X86. It can not be contained in a byte:
1.23 + * int bc = 0x20;
1.24 + * int bs = 0x190;
1.25 + * int bi = 0x1b0;
1.26 + *
1.27 + * To minimize the modification of share codes, the values are decreased 4 times when generated.
1.28 + * See [mips/c1_CodeStubs_mips.cpp 307] PatchingStub::emit_code().
1.29 + */
1.30 + int bc = *(unsigned char*) (stub_location - 1) * 4;
1.31 + int bs = *(unsigned char*) (stub_location - 2) * 4;
1.32 + int bi = *(unsigned char*) (stub_location - 3) * 4;
1.33 +
1.34 + int *byte_count = &bc;
1.35 + int *byte_skip = &bs;
1.36 + int *being_initialized_entry_offset = &bi;
1.37 +#else
1.38 unsigned char* byte_count = (unsigned char*) (stub_location - 1);
1.39 unsigned char* byte_skip = (unsigned char*) (stub_location - 2);
1.40 unsigned char* being_initialized_entry_offset = (unsigned char*) (stub_location - 3);
1.41 +#endif
1.42 address copy_buff = stub_location - *byte_skip - *byte_count;
1.43 address being_initialized_entry = stub_location - *being_initialized_entry_offset;
1.44 +
1.45 if (TracePatching) {
1.46 tty->print_cr(" Patching %s at bci %d at address " INTPTR_FORMAT " (%s)", Bytecodes::name(code), bci,
1.47 p2i(instr_pc), (stub_id == Runtime1::access_field_patching_id) ? "field" : "klass");
