2 * Meta can never use Elf32_Rel relocations.
4 * Copyright (C) 2013, Imagination Technologies Ltd.
6 * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
9 #define ELF_USES_RELOCA
13 /* Initialization sequence for the GOT. */
14 #define INIT_GOT(GOT_BASE,MODULE) \
16 GOT_BASE[1] = (unsigned long) MODULE; \
17 GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
20 /* Maximum unsigned GOT [GS]ETD offset size, ie. 2^(11+2). */
21 #define GOT_REG_OFFSET 0x2000
23 /* Defined some magic numbers that this ld.so should accept. */
24 #define MAGIC1 EM_METAG
26 #define ELF_TARGET "META"
28 /* Need bootstrap relocations */
29 #define ARCH_NEEDS_BOOTSTRAP_RELOCS
32 extern unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry);
34 /* Variable page size. */
35 #define ADDR_ALIGN (_dl_pagesize - 1)
36 #define PAGE_ALIGN (~ADDR_ALIGN)
37 #define OFFS_ALIGN (PAGE_ALIGN & ~(1ul << (sizeof(_dl_pagesize) * 8 - 1)))
39 /* The union of reloc-type-classes where the reloc TYPE is a member.
41 TYPE is in the class ELF_RTYPE_CLASS_NOCOPY if it should not be allowed
42 to resolve to one of the main executable's symbols, as for a COPY
44 #define elf_machine_type_class(type) \
45 (((((type) == R_METAG_JMP_SLOT)) * ELF_RTYPE_CLASS_PLT) \
46 | (((type) == R_METAG_COPY) * ELF_RTYPE_CLASS_COPY))
48 static inline Elf32_Addr
49 elf_machine_dynamic(Elf32_Ehdr *header)
53 __asm__ ("MOV %0,A1LbP" : "=r" (got));
55 if (header->e_ident[EI_ABIVERSION] >= 1) {
56 /* GOT register offset was introduced with ABI v1 */
57 got = (Elf32_Addr*)((void*)got - GOT_REG_OFFSET);
62 #define DL_BOOT_COMPUTE_GOT(GOT) \
63 ((GOT) = elf_machine_dynamic(header))
65 static inline Elf32_Addr
66 elf_machine_load_address(void)
69 __asm__ ("MOV D1Ar1,A1LbP\n"
70 "ADDT D1Ar1,D1Ar1,#HI(__dl_start@GOTOFF)\n"
71 "ADD D1Ar1,D1Ar1,#LO(__dl_start@GOTOFF)\n"
72 "ADDT D0Ar2,D0Ar2,#HI(__dl_start_addr@GOTOFF)\n"
73 "ADD D0Ar2,D0Ar2,#LO(__dl_start_addr@GOTOFF)\n"
74 "GETD D0Ar2,[D0Ar2]\n"
75 "SUB %0,D1Ar1,D0Ar2\n"
77 "__dl_start_addr: .long __dl_start\n"
79 : "=d" (addr) : : "D1Ar1", "D0Ar2");
84 elf_machine_relative(Elf32_Addr load_off, const Elf32_Addr rel_addr,
85 Elf32_Word relative_count)
87 Elf32_Rela *rpnt = (void *)rel_addr;
91 Elf32_Addr *const reloc_addr =
92 (void *)(load_off + (++rpnt)->r_offset);
94 *reloc_addr = load_off + rpnt->r_addend;
95 } while (--relative_count);
98 #define DL_MALLOC_ALIGN 8
100 #define HAVE_DL_INLINES_H
102 #define DL_IS_SPECIAL_SEGMENT(EPNT, PPNT) \
103 __dl_is_special_segment(EPNT, PPNT)
104 #define DL_MAP_SEGMENT(EPNT, PPNT, INFILE, FLAGS) \
105 __dl_map_segment (EPNT, PPNT, INFILE, FLAGS)
107 #define DL_CHECK_LIB_TYPE(epnt, piclib, _dl_progname, libname) \
111 char *header_ = (char *)epnt; \
112 ppnt_ = (ElfW(Phdr) *)(intptr_t) & header_[epnt->e_phoff]; \
113 if (ppnt_->p_vaddr >= 0x80000000 && \
114 ppnt_->p_vaddr < 0x82060000) \
116 if (ppnt_->p_vaddr >= 0xe0200000 && \
117 ppnt_->p_vaddr < 0xe0260000) \
122 #define _DL_PREAD(FD, BUF, SIZE, OFFSET) \
123 (_dl_pread((FD), (BUF), (SIZE), (OFFSET)))