Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/c1/c1_Runtime1.cpp
src/share/vm/c1/c1_Runtime1.cpp
- changeset 8856
- ac27a9c85bea
- parent 8604
- 04d83ba48607
- child 8865
- ffcdff41a92f
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| 8855:98b4b0661837 | 8856:ac27a9c85bea |
|---|---|
| 18 * | 18 * |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 * or visit www.oracle.com if you need additional information or have any | 20 * or visit www.oracle.com if you need additional information or have any |
| 21 * questions. | 21 * questions. |
| 22 * | 22 * |
| 23 */ | |
| 24 | |
| 25 /* | |
| 26 * This file has been modified by Loongson Technology in 2015. These | |
| 27 * modifications are Copyright (c) 2015 Loongson Technology, and are made | |
| 28 * available on the same license terms set forth above. | |
| 23 */ | 29 */ |
| 24 | 30 |
| 25 #include "precompiled.hpp" | 31 #include "precompiled.hpp" |
| 26 #include "asm/codeBuffer.hpp" | 32 #include "asm/codeBuffer.hpp" |
| 27 #include "c1/c1_CodeStubs.hpp" | 33 #include "c1/c1_CodeStubs.hpp" |
| 970 // instr byte n-1 | 976 // instr byte n-1 |
| 971 // n | 977 // n |
| 972 // .... <-- call destination | 978 // .... <-- call destination |
| 973 | 979 |
| 974 address stub_location = caller_frame.pc() + PatchingStub::patch_info_offset(); | 980 address stub_location = caller_frame.pc() + PatchingStub::patch_info_offset(); |
| 981 | |
| 982 #if defined(MIPS32) && defined(_LP64) | |
| 983 /* Jin: In MIPS64, byte_skip is much larger than that in X86. It can not be contained in a byte: | |
| 984 * int bc = 0x20; | |
| 985 * int bs = 0x190; | |
| 986 * int bi = 0x1b0; | |
| 987 * | |
| 988 * To minimize the modification of share codes, the values are decreased 4 times when generated. | |
| 989 * See [mips/c1_CodeStubs_mips.cpp 307] PatchingStub::emit_code(). | |
| 990 */ | |
| 991 int bc = *(unsigned char*) (stub_location - 1) * 4; | |
| 992 int bs = *(unsigned char*) (stub_location - 2) * 4; | |
| 993 int bi = *(unsigned char*) (stub_location - 3) * 4; | |
| 994 | |
| 995 int *byte_count = &bc; | |
| 996 int *byte_skip = &bs; | |
| 997 int *being_initialized_entry_offset = &bi; | |
| 998 #else | |
| 975 unsigned char* byte_count = (unsigned char*) (stub_location - 1); | 999 unsigned char* byte_count = (unsigned char*) (stub_location - 1); |
| 976 unsigned char* byte_skip = (unsigned char*) (stub_location - 2); | 1000 unsigned char* byte_skip = (unsigned char*) (stub_location - 2); |
| 977 unsigned char* being_initialized_entry_offset = (unsigned char*) (stub_location - 3); | 1001 unsigned char* being_initialized_entry_offset = (unsigned char*) (stub_location - 3); |
| 1002 #endif | |
| 978 address copy_buff = stub_location - *byte_skip - *byte_count; | 1003 address copy_buff = stub_location - *byte_skip - *byte_count; |
| 979 address being_initialized_entry = stub_location - *being_initialized_entry_offset; | 1004 address being_initialized_entry = stub_location - *being_initialized_entry_offset; |
| 1005 | |
| 980 if (TracePatching) { | 1006 if (TracePatching) { |
| 981 tty->print_cr(" Patching %s at bci %d at address " INTPTR_FORMAT " (%s)", Bytecodes::name(code), bci, | 1007 tty->print_cr(" Patching %s at bci %d at address " INTPTR_FORMAT " (%s)", Bytecodes::name(code), bci, |
| 982 p2i(instr_pc), (stub_id == Runtime1::access_field_patching_id) ? "field" : "klass"); | 1008 p2i(instr_pc), (stub_id == Runtime1::access_field_patching_id) ? "field" : "klass"); |
| 983 nmethod* caller_code = CodeCache::find_nmethod(caller_frame.pc()); | 1009 nmethod* caller_code = CodeCache::find_nmethod(caller_frame.pc()); |
| 984 assert(caller_code != NULL, "nmethod not found"); | 1010 assert(caller_code != NULL, "nmethod not found"); |
