1 /* reloc_ia32.c - position independent x86 ELF shared object relocator
2 Copyright (C) 1999 Hewlett-Packard Co.
3 Contributed by David Mosberger <davidm@hpl.hp.com>.
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions
11 * Redistributions of source code must retain the above copyright
12 notice, this list of conditions and the following disclaimer.
13 * Redistributions in binary form must reproduce the above
14 copyright notice, this list of conditions and the following
15 disclaimer in the documentation and/or other materials
16 provided with the distribution.
17 * Neither the name of Hewlett-Packard Co. nor the names of its
18 contributors may be used to endorse or promote products derived
19 from this software without specific prior written permission.
21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
22 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
23 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
26 BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
27 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
31 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
32 THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #include <link.h> /* get _DYNAMIC decl and ElfW and ELFW macros */
40 #define uint64_t efi_uint64_t
41 #define int64_t efi_int64_t
42 #define uint32_t efi_uint32_t
43 #define int32_t efi_int32_t
44 #define uint16_t efi_uint16_t
45 #define int16_t efi_int16_t
46 #define uint8_t efi_uint8_t
47 #define int8_t efi_int8_t
50 #define uint64_t efi_uint64_t
51 #define int64_t efi_int64_t
52 #define uint32_t efi_uint32_t
53 #define int32_t efi_int32_t
54 #define uint16_t efi_uint16_t
55 #define int16_t efi_int16_t
56 #define uint8_t efi_uint8_t
57 #define int8_t efi_int8_t
62 EFI_STATUS _relocate (long ldbase, ElfW(Dyn) *dyn, EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
64 long relsz = 0, relent = 0;
69 for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
70 switch (dyn[i].d_tag) {
73 ((unsigned long)dyn[i].d_un.d_ptr
78 relsz = dyn[i].d_un.d_val;
82 relent = dyn[i].d_un.d_val;
93 if (!rel && relent == 0)
96 if (!rel || relent == 0)
97 return EFI_LOAD_ERROR;
100 /* apply the relocs */
101 switch (ELF32_R_TYPE (rel->r_info)) {
106 addr = (unsigned long *)
107 (ldbase + rel->r_offset);
114 rel = (ElfW(Rel)*) ((char *) rel + relent);