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head/sys/i386/i386/elf_machdep.c
| Show First 20 Lines • Show All 153 Lines • ▼ Show 20 Lines | if (dst != NULL) { | ||||
| xsave_mask; | xsave_mask; | ||||
| } else | } else | ||||
| len += elf32_populate_note(NT_X86_XSTATE, NULL, NULL, | len += elf32_populate_note(NT_X86_XSTATE, NULL, NULL, | ||||
| cpu_max_ext_state_size, NULL); | cpu_max_ext_state_size, NULL); | ||||
| } | } | ||||
| *off = len; | *off = len; | ||||
| } | } | ||||
| #define ERI_LOCAL 0x0001 | |||||
| #define ERI_ONLYIFUNC 0x0002 | |||||
| /* Process one elf relocation with addend. */ | /* Process one elf relocation with addend. */ | ||||
| static int | static int | ||||
| elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, | elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, | ||||
| int type, int local, elf_lookup_fn lookup) | int type, elf_lookup_fn lookup, int flags) | ||||
| { | { | ||||
| Elf_Addr *where; | Elf_Addr *where; | ||||
| Elf_Addr addr; | Elf_Addr addr; | ||||
| Elf_Addr addend; | Elf_Addr addend; | ||||
| Elf_Word rtype, symidx; | Elf_Word rtype, symidx; | ||||
| const Elf_Rel *rel; | const Elf_Rel *rel; | ||||
| const Elf_Rela *rela; | const Elf_Rela *rela; | ||||
| int error; | int error; | ||||
| Show All 12 Lines | case ELF_RELOC_RELA: | ||||
| addend = rela->r_addend; | addend = rela->r_addend; | ||||
| rtype = ELF_R_TYPE(rela->r_info); | rtype = ELF_R_TYPE(rela->r_info); | ||||
| symidx = ELF_R_SYM(rela->r_info); | symidx = ELF_R_SYM(rela->r_info); | ||||
| break; | break; | ||||
| default: | default: | ||||
| panic("unknown reloc type %d\n", type); | panic("unknown reloc type %d\n", type); | ||||
| } | } | ||||
| if (local) { | if (((flags & ERI_ONLYIFUNC) == 0) ^ (rtype != R_386_IRELATIVE)) | ||||
| return (0); | |||||
| if ((flags & ERI_LOCAL) != 0) { | |||||
| if (rtype == R_386_RELATIVE) { /* A + B */ | if (rtype == R_386_RELATIVE) { /* A + B */ | ||||
| addr = elf_relocaddr(lf, relocbase + addend); | addr = elf_relocaddr(lf, relocbase + addend); | ||||
| if (*where != addr) | if (*where != addr) | ||||
| *where = addr; | *where = addr; | ||||
| } | } | ||||
| return (0); | return (0); | ||||
| } | } | ||||
| Show All 35 Lines | case R_386_GLOB_DAT: /* S */ | ||||
| return -1; | return -1; | ||||
| if (*where != addr) | if (*where != addr) | ||||
| *where = addr; | *where = addr; | ||||
| break; | break; | ||||
| case R_386_RELATIVE: | case R_386_RELATIVE: | ||||
| break; | break; | ||||
| case R_386_IRELATIVE: | |||||
| addr = relocbase + addend; | |||||
| addr = ((Elf_Addr (*)(void))addr)(); | |||||
| if (*where != addr) | |||||
| *where = addr; | |||||
| break; | |||||
| default: | default: | ||||
| printf("kldload: unexpected relocation type %d\n", | printf("kldload: unexpected relocation type %d\n", | ||||
| rtype); | rtype); | ||||
| return -1; | return -1; | ||||
| } | } | ||||
| return(0); | return(0); | ||||
| } | } | ||||
| int | int | ||||
| elf_reloc_ifunc(linker_file_t lf, Elf_Addr relocbase, const void *data, | |||||
| int type, elf_lookup_fn lookup) | |||||
| { | |||||
| return (elf_reloc_internal(lf, relocbase, data, type, lookup, | |||||
| ERI_ONLYIFUNC)); | |||||
| } | |||||
| int | |||||
| elf_reloc(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, | elf_reloc(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, | ||||
| elf_lookup_fn lookup) | elf_lookup_fn lookup) | ||||
| { | { | ||||
| return (elf_reloc_internal(lf, relocbase, data, type, 0, lookup)); | return (elf_reloc_internal(lf, relocbase, data, type, lookup, 0)); | ||||
| } | } | ||||
| int | int | ||||
| elf_reloc_local(linker_file_t lf, Elf_Addr relocbase, const void *data, | elf_reloc_local(linker_file_t lf, Elf_Addr relocbase, const void *data, | ||||
| int type, elf_lookup_fn lookup) | int type, elf_lookup_fn lookup) | ||||
| { | { | ||||
| return (elf_reloc_internal(lf, relocbase, data, type, 1, lookup)); | return (elf_reloc_internal(lf, relocbase, data, type, lookup, | ||||
| ERI_LOCAL)); | |||||
| } | } | ||||
| int | int | ||||
| elf_cpu_load_file(linker_file_t lf __unused) | elf_cpu_load_file(linker_file_t lf __unused) | ||||
| { | { | ||||
| return (0); | return (0); | ||||
| } | } | ||||
| int | int | ||||
| elf_cpu_unload_file(linker_file_t lf __unused) | elf_cpu_unload_file(linker_file_t lf __unused) | ||||
| { | { | ||||
| return (0); | return (0); | ||||
| } | } | ||||