diff options
Diffstat (limited to 'elf/dynamic-link.h')
| -rw-r--r-- | elf/dynamic-link.h | 91 |
1 files changed, 53 insertions, 38 deletions
diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h index 9d7ae3d3fa..9e2ca03543 100644 --- a/elf/dynamic-link.h +++ b/elf/dynamic-link.h @@ -83,60 +83,75 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn, #ifdef ELF_MACHINE_PLTREL_OVERLAP #define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, lazy) \ do { \ - ElfW(Addr) r_addr, r_size, p_addr, p_size; \ + struct { ElfW(Addr) start, size; int lazy; } ranges[3]; \ + int ranges_index; \ + \ + ranges[0].lazy = ranges[2].lazy = 0; \ + ranges[1].lazy = 1; \ + ranges[0].size = ranges[1].size = ranges[2].size = 0; \ + \ if ((map)->l_info[DT_##RELOC]) \ { \ - r_addr = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \ - r_size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \ - if ((map)->l_info[DT_PLTREL] && \ - (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \ - { \ - p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \ - p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \ - if (r_addr <= p_addr && r_addr+r_size > p_addr) \ - { \ - ElfW(Addr) r2_addr, r2_size; \ - r2_addr = p_addr + p_size; \ - if (r2_addr < r_addr + r_size) \ - { \ - r2_size = r_addr + r_size - r2_addr; \ - elf_dynamic_do_##reloc ((map), r2_addr, r2_size, 0); \ - } \ - r_size = p_addr - r_addr; \ - } \ - } \ - \ - elf_dynamic_do_##reloc ((map), r_addr, r_size, 0); \ - if (p_addr) \ - elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \ + ranges[0].start = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \ + ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \ } \ - else if ((map)->l_info[DT_PLTREL] && \ - (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \ - { \ - p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \ - p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \ \ - elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \ + if ((lazy) \ + && (map)->l_info[DT_PLTREL] \ + && (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \ + { \ + ranges[1].start = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \ + ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \ + ranges[2].start = ranges[1].start + ranges[1].size; \ + ranges[2].size = ranges[0].start + ranges[0].size - ranges[2].start; \ + ranges[0].size = ranges[1].start - ranges[0].start; \ } \ + \ + for (ranges_index = 0; ranges_index < 3; ++ranges_index) \ + elf_dynamic_do_##reloc ((map), \ + ranges[ranges_index].start, \ + ranges[ranges_index].size, \ + ranges[ranges_index].lazy); \ } while (0) #else #define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, lazy) \ do { \ + struct { ElfW(Addr) start, size; int lazy; } ranges[2]; \ + int ranges_index; \ + ranges[0].lazy = 0; \ + ranges[1].lazy = 1; \ + ranges[0].size = ranges[1].size = 0; \ + ranges[0].start = 0; \ + \ if ((map)->l_info[DT_##RELOC]) \ { \ - ElfW(Addr) r_addr, r_size; \ - r_addr = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \ - r_size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \ - elf_dynamic_do_##reloc ((map), r_addr, r_size, 0); \ + ranges[0].start = (map)->l_info[DT_##RELOC]->d_un.d_ptr; \ + ranges[0].size = (map)->l_info[DT_##RELOC##SZ]->d_un.d_val; \ } \ if ((map)->l_info[DT_PLTREL] && \ (map)->l_info[DT_PLTREL]->d_un.d_val == DT_##RELOC) \ { \ - ElfW(Addr) p_addr, p_size; \ - p_addr = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \ - p_size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \ - elf_dynamic_do_##reloc ((map), p_addr, p_size, (lazy)); \ + ElfW(Addr) start = (map)->l_info[DT_JMPREL]->d_un.d_ptr; \ + \ + if (lazy \ + /* This test does not only detect whether the relocation \ + sections are in the right order, it also checks whether \ + there is a DT_REL/DT_RELA section. */ \ + || ranges[0].start + ranges[0].size != start) \ + { \ + ranges[1].start = start; \ + ranges[1].size = (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \ + } \ + else \ + /* Combine processing the sections. */ \ + ranges[0].size += (map)->l_info[DT_PLTRELSZ]->d_un.d_val; \ } \ + \ + for (ranges_index = 0; ranges_index < 2; ++ranges_index) \ + elf_dynamic_do_##reloc ((map), \ + ranges[ranges_index].start, \ + ranges[ranges_index].size, \ + ranges[ranges_index].lazy); \ } while (0) #endif |