Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/c1/c1_Runtime1.cpp
src/share/vm/c1/c1_Runtime1.cpp
- changeset 8865
- ffcdff41a92f
- parent 8604
- 04d83ba48607
- child 9127
- 0f3853aec741
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| 8864:e4aeef458496 | 8865:ffcdff41a92f |
|---|---|
| 977 // n | 977 // n |
| 978 // .... <-- call destination | 978 // .... <-- call destination |
| 979 | 979 |
| 980 address stub_location = caller_frame.pc() + PatchingStub::patch_info_offset(); | 980 address stub_location = caller_frame.pc() + PatchingStub::patch_info_offset(); |
| 981 | 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 | |
| 999 unsigned char* byte_count = (unsigned char*) (stub_location - 1); | 982 unsigned char* byte_count = (unsigned char*) (stub_location - 1); |
| 1000 unsigned char* byte_skip = (unsigned char*) (stub_location - 2); | 983 unsigned char* byte_skip = (unsigned char*) (stub_location - 2); |
| 1001 unsigned char* being_initialized_entry_offset = (unsigned char*) (stub_location - 3); | 984 unsigned char* being_initialized_entry_offset = (unsigned char*) (stub_location - 3); |
| 1002 #endif | |
| 1003 address copy_buff = stub_location - *byte_skip - *byte_count; | 985 address copy_buff = stub_location - *byte_skip - *byte_count; |
| 1004 address being_initialized_entry = stub_location - *being_initialized_entry_offset; | 986 address being_initialized_entry = stub_location - *being_initialized_entry_offset; |
| 1005 | 987 |
| 1006 if (TracePatching) { | 988 if (TracePatching) { |
| 1007 tty->print_cr(" Patching %s at bci %d at address " INTPTR_FORMAT " (%s)", Bytecodes::name(code), bci, | 989 tty->print_cr(" Patching %s at bci %d at address " INTPTR_FORMAT " (%s)", Bytecodes::name(code), bci, |
| 1015 OopMap* map = caller_code->oop_map_for_return_address(caller_frame.pc()); | 997 OopMap* map = caller_code->oop_map_for_return_address(caller_frame.pc()); |
| 1016 assert(map != NULL, "null check"); | 998 assert(map != NULL, "null check"); |
| 1017 map->print(); | 999 map->print(); |
| 1018 tty->cr(); | 1000 tty->cr(); |
| 1019 | 1001 |
| 1020 Disassembler::decode(copy_buff, copy_buff + *byte_count, tty); | 1002 Disassembler::decode(copy_buff - *byte_count, copy_buff + *byte_count, tty); |
| 1021 } | 1003 } |
| 1022 // depending on the code below, do_patch says whether to copy the patch body back into the nmethod | 1004 // depending on the code below, do_patch says whether to copy the patch body back into the nmethod |
| 1023 bool do_patch = true; | 1005 bool do_patch = true; |
| 1024 if (stub_id == Runtime1::access_field_patching_id) { | 1006 if (stub_id == Runtime1::access_field_patching_id) { |
| 1025 // The offset may not be correct if the class was not loaded at code generation time. | 1007 // The offset may not be correct if the class was not loaded at code generation time. |
