| link_elf.c (43185) | link_elf.c (43301) |
|---|---|
| 1/*- 2 * Copyright (c) 1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
| 26 * $Id: link_elf.c,v 1.11 1998/12/31 09:17:20 peter Exp $ | 26 * $Id: link_elf.c,v 1.12 1999/01/25 08:42:24 dfr Exp $ |
| 27 */ 28 29#include <sys/param.h> 30#include <sys/kernel.h> 31#include <sys/systm.h> 32#include <sys/malloc.h> 33#include <sys/proc.h> 34#include <sys/namei.h> --- 10 unchanged lines hidden (view full) --- 45#include <vm/vm_kern.h> 46#include <vm/vm_extern.h> 47#include <vm/pmap.h> 48#include <vm/vm_map.h> 49 50static int link_elf_load_module(const char*, linker_file_t*); 51static int link_elf_load_file(const char*, linker_file_t*); 52static int link_elf_lookup_symbol(linker_file_t, const char*, | 27 */ 28 29#include <sys/param.h> 30#include <sys/kernel.h> 31#include <sys/systm.h> 32#include <sys/malloc.h> 33#include <sys/proc.h> 34#include <sys/namei.h> --- 10 unchanged lines hidden (view full) --- 45#include <vm/vm_kern.h> 46#include <vm/vm_extern.h> 47#include <vm/pmap.h> 48#include <vm/vm_map.h> 49 50static int link_elf_load_module(const char*, linker_file_t*); 51static int link_elf_load_file(const char*, linker_file_t*); 52static int link_elf_lookup_symbol(linker_file_t, const char*, |
| 53 linker_sym_t*); | 53 c_linker_sym_t*); |
| 54static int link_elf_symbol_values(linker_file_t, linker_sym_t, linker_symval_t*); 55static int link_elf_search_symbol(linker_file_t, caddr_t value, | 54static int link_elf_symbol_values(linker_file_t, linker_sym_t, linker_symval_t*); 55static int link_elf_search_symbol(linker_file_t, caddr_t value, |
| 56 linker_sym_t* sym, long* diffp); | 56 c_linker_sym_t* sym, long* diffp); |
| 57 58static void link_elf_unload_file(linker_file_t); 59static void link_elf_unload_module(linker_file_t); 60 61static struct linker_class_ops link_elf_class_ops = { 62 link_elf_load_module, 63}; 64 --- 719 unchanged lines hidden (view full) --- 784 const Elf_Rel *rel; 785 const Elf_Rela *relalim; 786 const Elf_Rela *rela; 787 const char *symname; 788 789 /* Perform relocations without addend if there are any: */ 790 rel = ef->rel; 791 if (rel) { | 57 58static void link_elf_unload_file(linker_file_t); 59static void link_elf_unload_module(linker_file_t); 60 61static struct linker_class_ops link_elf_class_ops = { 62 link_elf_load_module, 63}; 64 --- 719 unchanged lines hidden (view full) --- 784 const Elf_Rel *rel; 785 const Elf_Rela *relalim; 786 const Elf_Rela *rela; 787 const char *symname; 788 789 /* Perform relocations without addend if there are any: */ 790 rel = ef->rel; 791 if (rel) { |
| 792 rellim = (const Elf_Rel *) ((caddr_t) ef->rel + ef->relsize); | 792 rellim = (const Elf_Rel *) ((c_caddr_t) ef->rel + ef->relsize); |
| 793 while (rel < rellim) { 794 symname = symbol_name(ef, rel->r_info); 795 if (elf_reloc(lf, rel, ELF_RELOC_REL, symname)) { 796 printf("link_elf: symbol %s undefined\n", symname); 797 return ENOENT; 798 } 799 rel++; 800 } 801 } 802 803 /* Perform relocations with addend if there are any: */ 804 rela = ef->rela; 805 if (rela) { | 793 while (rel < rellim) { 794 symname = symbol_name(ef, rel->r_info); 795 if (elf_reloc(lf, rel, ELF_RELOC_REL, symname)) { 796 printf("link_elf: symbol %s undefined\n", symname); 797 return ENOENT; 798 } 799 rel++; 800 } 801 } 802 803 /* Perform relocations with addend if there are any: */ 804 rela = ef->rela; 805 if (rela) { |
| 806 relalim = (const Elf_Rela *) ((caddr_t) ef->rela + ef->relasize); | 806 relalim = (const Elf_Rela *) ((c_caddr_t) ef->rela + ef->relasize); |
| 807 while (rela < relalim) { 808 symname = symbol_name(ef, rela->r_info); 809 if (elf_reloc(lf, rela, ELF_RELOC_RELA, symname)) { 810 printf("link_elf: symbol %s undefined\n", symname); 811 return ENOENT; 812 } 813 rela++; 814 } 815 } 816 817 /* Perform PLT relocations without addend if there are any: */ 818 rel = ef->pltrel; 819 if (rel) { | 807 while (rela < relalim) { 808 symname = symbol_name(ef, rela->r_info); 809 if (elf_reloc(lf, rela, ELF_RELOC_RELA, symname)) { 810 printf("link_elf: symbol %s undefined\n", symname); 811 return ENOENT; 812 } 813 rela++; 814 } 815 } 816 817 /* Perform PLT relocations without addend if there are any: */ 818 rel = ef->pltrel; 819 if (rel) { |
| 820 rellim = (const Elf_Rel *) ((caddr_t) ef->pltrel + ef->pltrelsize); | 820 rellim = (const Elf_Rel *) ((c_caddr_t) ef->pltrel + ef->pltrelsize); |
| 821 while (rel < rellim) { 822 symname = symbol_name(ef, rel->r_info); 823 if (elf_reloc(lf, rel, ELF_RELOC_REL, symname)) { 824 printf("link_elf: symbol %s undefined\n", symname); 825 return ENOENT; 826 } 827 rel++; 828 } 829 } 830 831 /* Perform relocations with addend if there are any: */ 832 rela = ef->pltrela; 833 if (rela) { | 821 while (rel < rellim) { 822 symname = symbol_name(ef, rel->r_info); 823 if (elf_reloc(lf, rel, ELF_RELOC_REL, symname)) { 824 printf("link_elf: symbol %s undefined\n", symname); 825 return ENOENT; 826 } 827 rel++; 828 } 829 } 830 831 /* Perform relocations with addend if there are any: */ 832 rela = ef->pltrela; 833 if (rela) { |
| 834 relalim = (const Elf_Rela *) ((caddr_t) ef->pltrela + ef->pltrelasize); | 834 relalim = (const Elf_Rela *) ((c_caddr_t) ef->pltrela + ef->pltrelasize); |
| 835 while (rela < relalim) { 836 symname = symbol_name(ef, rela->r_info); 837 if (elf_reloc(lf, rela, ELF_RELOC_RELA, symname)) { 838 printf("link_elf: symbol %s undefined\n", symname); 839 return ENOENT; 840 } 841 rela++; 842 } --- 18 unchanged lines hidden (view full) --- 861 if ((g = h & 0xf0000000) != 0) 862 h ^= g >> 24; 863 h &= ~g; 864 } 865 return h; 866} 867 868int | 835 while (rela < relalim) { 836 symname = symbol_name(ef, rela->r_info); 837 if (elf_reloc(lf, rela, ELF_RELOC_RELA, symname)) { 838 printf("link_elf: symbol %s undefined\n", symname); 839 return ENOENT; 840 } 841 rela++; 842 } --- 18 unchanged lines hidden (view full) --- 861 if ((g = h & 0xf0000000) != 0) 862 h ^= g >> 24; 863 h &= ~g; 864 } 865 return h; 866} 867 868int |
| 869link_elf_lookup_symbol(linker_file_t lf, const char* name, linker_sym_t* sym) | 869link_elf_lookup_symbol(linker_file_t lf, const char* name, c_linker_sym_t* sym) |
| 870{ 871 elf_file_t ef = lf->priv; 872 unsigned long symnum; 873 const Elf_Sym* symp; 874 const char *strp; 875 unsigned long hash; 876 int i; 877 --- 14 unchanged lines hidden (view full) --- 892 } 893 894 strp = ef->strtab + symp->st_name; 895 896 if (strcmp(name, strp) == 0) { 897 if (symp->st_shndx != SHN_UNDEF || 898 (symp->st_value != 0 && 899 ELF_ST_TYPE(symp->st_info) == STT_FUNC)) { | 870{ 871 elf_file_t ef = lf->priv; 872 unsigned long symnum; 873 const Elf_Sym* symp; 874 const char *strp; 875 unsigned long hash; 876 int i; 877 --- 14 unchanged lines hidden (view full) --- 892 } 893 894 strp = ef->strtab + symp->st_name; 895 896 if (strcmp(name, strp) == 0) { 897 if (symp->st_shndx != SHN_UNDEF || 898 (symp->st_value != 0 && 899 ELF_ST_TYPE(symp->st_info) == STT_FUNC)) { |
| 900 *sym = (linker_sym_t) symp; | 900 *sym = (c_linker_sym_t) symp; |
| 901 return 0; 902 } else 903 return ENOENT; 904 } 905 906 symnum = ef->chains[symnum]; 907 } 908 909 /* If we have not found it, look at the full table (if loaded) */ 910 if (ef->symtab == ef->ddbsymtab) 911 return ENOENT; 912 913 /* Exhaustive search */ 914 for (i = 0, symp = ef->ddbsymtab; i < ef->ddbsymcnt; i++, symp++) { 915 strp = ef->ddbstrtab + symp->st_name; 916 if (strcmp(name, strp) == 0) { 917 if (symp->st_shndx != SHN_UNDEF || 918 (symp->st_value != 0 && 919 ELF_ST_TYPE(symp->st_info) == STT_FUNC)) { | 901 return 0; 902 } else 903 return ENOENT; 904 } 905 906 symnum = ef->chains[symnum]; 907 } 908 909 /* If we have not found it, look at the full table (if loaded) */ 910 if (ef->symtab == ef->ddbsymtab) 911 return ENOENT; 912 913 /* Exhaustive search */ 914 for (i = 0, symp = ef->ddbsymtab; i < ef->ddbsymcnt; i++, symp++) { 915 strp = ef->ddbstrtab + symp->st_name; 916 if (strcmp(name, strp) == 0) { 917 if (symp->st_shndx != SHN_UNDEF || 918 (symp->st_value != 0 && 919 ELF_ST_TYPE(symp->st_info) == STT_FUNC)) { |
| 920 *sym = (linker_sym_t) symp; | 920 *sym = (c_linker_sym_t) symp; |
| 921 return 0; 922 } else 923 return ENOENT; 924 } 925 } 926 927 return ENOENT; 928} --- 18 unchanged lines hidden (view full) --- 947 symval->size = es->st_size; 948 return 0; 949 } 950 return ENOENT; 951} 952 953static int 954link_elf_search_symbol(linker_file_t lf, caddr_t value, | 921 return 0; 922 } else 923 return ENOENT; 924 } 925 } 926 927 return ENOENT; 928} --- 18 unchanged lines hidden (view full) --- 947 symval->size = es->st_size; 948 return 0; 949 } 950 return ENOENT; 951} 952 953static int 954link_elf_search_symbol(linker_file_t lf, caddr_t value, |
| 955 linker_sym_t* sym, long* diffp) | 955 c_linker_sym_t* sym, long* diffp) |
| 956{ 957 elf_file_t ef = lf->priv; 958 u_long off = (u_long) value; 959 u_long diff = off; 960 const Elf_Sym* es; 961 const Elf_Sym* best = 0; 962 int i; 963 --- 10 unchanged lines hidden (view full) --- 974 best = es; 975 } 976 } 977 } 978 if (best == 0) 979 *diffp = off; 980 else 981 *diffp = diff; | 956{ 957 elf_file_t ef = lf->priv; 958 u_long off = (u_long) value; 959 u_long diff = off; 960 const Elf_Sym* es; 961 const Elf_Sym* best = 0; 962 int i; 963 --- 10 unchanged lines hidden (view full) --- 974 best = es; 975 } 976 } 977 } 978 if (best == 0) 979 *diffp = off; 980 else 981 *diffp = diff; |
| 982 *sym = (linker_sym_t) best; | 982 *sym = (c_linker_sym_t) best; |
| 983 984 return 0; 985} | 983 984 return 0; 985} |