Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: agent/src/os/linux/ps_core.c
agent/src/os/linux/ps_core.c
- changeset 9852
- 70aa912cebe5
- parent 9756
- 2be326848943
- parent 9814
- 944634dd98a4
equal
deleted
inserted
replaced
| 9809:8486f0c4b7c3 | 9852:70aa912cebe5 |
|---|---|
| 866 #define LINK_MAP_ADDR_OFFSET offsetof(struct link_map, l_addr) | 866 #define LINK_MAP_ADDR_OFFSET offsetof(struct link_map, l_addr) |
| 867 #define LINK_MAP_NAME_OFFSET offsetof(struct link_map, l_name) | 867 #define LINK_MAP_NAME_OFFSET offsetof(struct link_map, l_name) |
| 868 #define LINK_MAP_LD_OFFSET offsetof(struct link_map, l_ld) | 868 #define LINK_MAP_LD_OFFSET offsetof(struct link_map, l_ld) |
| 869 #define LINK_MAP_NEXT_OFFSET offsetof(struct link_map, l_next) | 869 #define LINK_MAP_NEXT_OFFSET offsetof(struct link_map, l_next) |
| 870 | 870 |
| 871 #define INVALID_LOAD_ADDRESS -1L | |
| 872 #define ZERO_LOAD_ADDRESS 0x0L | |
| 873 | |
| 871 // Calculate the load address of shared library | 874 // Calculate the load address of shared library |
| 872 // on prelink-enabled environment. | 875 // on prelink-enabled environment. |
| 873 // | 876 // |
| 874 // In case of GDB, it would be calculated by offset of link_map.l_ld | 877 // In case of GDB, it would be calculated by offset of link_map.l_ld |
| 875 // and the address of .dynamic section. | 878 // and the address of .dynamic section. |
| 882 int i; | 885 int i; |
| 883 | 886 |
| 884 phbuf = read_program_header_table(lib_fd, elf_ehdr); | 887 phbuf = read_program_header_table(lib_fd, elf_ehdr); |
| 885 if (phbuf == NULL) { | 888 if (phbuf == NULL) { |
| 886 print_debug("can't read program header of shared object\n"); | 889 print_debug("can't read program header of shared object\n"); |
| 887 return 0L; | 890 return INVALID_LOAD_ADDRESS; |
| 888 } | 891 } |
| 889 | 892 |
| 890 // Get the address of .dynamic section from shared library. | 893 // Get the address of .dynamic section from shared library. |
| 891 for (i = 0; i < elf_ehdr->e_phnum; i++) { | 894 for (i = 0; i < elf_ehdr->e_phnum; i++) { |
| 892 if (phbuf[i].p_type == PT_DYNAMIC) { | 895 if (phbuf[i].p_type == PT_DYNAMIC) { |
| 898 free(phbuf); | 901 free(phbuf); |
| 899 | 902 |
| 900 if (ps_pdread(ph, (psaddr_t)link_map_addr + LINK_MAP_LD_OFFSET, | 903 if (ps_pdread(ph, (psaddr_t)link_map_addr + LINK_MAP_LD_OFFSET, |
| 901 &lib_ld, sizeof(uintptr_t)) != PS_OK) { | 904 &lib_ld, sizeof(uintptr_t)) != PS_OK) { |
| 902 print_debug("can't read address of dynamic section in shared object\n"); | 905 print_debug("can't read address of dynamic section in shared object\n"); |
| 903 return 0L; | 906 return INVALID_LOAD_ADDRESS; |
| 904 } | 907 } |
| 905 | 908 |
| 906 // Return the load address which is calculated by the address of .dynamic | 909 // Return the load address which is calculated by the address of .dynamic |
| 907 // and link_map.l_ld . | 910 // and link_map.l_ld . |
| 908 load_addr = lib_ld - lib_dyn_addr; | 911 load_addr = lib_ld - lib_dyn_addr; |
| 1009 if (lib_fd < 0) { | 1012 if (lib_fd < 0) { |
| 1010 print_debug("can't open shared object %s\n", lib_name); | 1013 print_debug("can't open shared object %s\n", lib_name); |
| 1011 // continue with other libraries... | 1014 // continue with other libraries... |
| 1012 } else { | 1015 } else { |
| 1013 if (read_elf_header(lib_fd, &elf_ehdr)) { | 1016 if (read_elf_header(lib_fd, &elf_ehdr)) { |
| 1014 if (lib_base_diff == 0x0L) { | 1017 if (lib_base_diff == ZERO_LOAD_ADDRESS) { |
| 1015 lib_base_diff = calc_prelinked_load_address(ph, lib_fd, &elf_ehdr, link_map_addr); | 1018 lib_base_diff = calc_prelinked_load_address(ph, lib_fd, &elf_ehdr, link_map_addr); |
| 1016 if (lib_base_diff == 0x0L) { | 1019 if (lib_base_diff == INVALID_LOAD_ADDRESS) { |
| 1017 close(lib_fd); | 1020 close(lib_fd); |
| 1018 return false; | 1021 return false; |
| 1019 } | 1022 } |
| 1020 } | 1023 } |
| 1021 | 1024 |
