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/*
* Meta can never use Elf32_Rel relocations.
*
* Copyright (C) 2013, Imagination Technologies Ltd.
*
* Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
*/
#define ELF_USES_RELOCA
#include <elf.h>
/* Initialization sequence for the GOT. */
#define INIT_GOT(GOT_BASE,MODULE) \
{ \
GOT_BASE[1] = (unsigned long) MODULE; \
GOT_BASE[2] = (unsigned long) _dl_linux_resolve; \
}
/* Maximum unsigned GOT [GS]ETD offset size, ie. 2^(11+2). */
#define GOT_REG_OFFSET 0x2000
/* Defined some magic numbers that this ld.so should accept. */
#define MAGIC1 EM_METAG
#undef MAGIC2
#define ELF_TARGET "META"
/* Need bootstrap relocations */
#define ARCH_NEEDS_BOOTSTRAP_RELOCS
struct elf_resolve;
extern unsigned long _dl_linux_resolver(struct elf_resolve *tpnt, int reloc_entry);
/* Variable page size. */
#define ADDR_ALIGN (_dl_pagesize - 1)
#define PAGE_ALIGN (~ADDR_ALIGN)
#define OFFS_ALIGN (PAGE_ALIGN & ~(1ul << (sizeof(_dl_pagesize) * 8 - 1)))
/* The union of reloc-type-classes where the reloc TYPE is a member.
TYPE is in the class ELF_RTYPE_CLASS_NOCOPY if it should not be allowed
to resolve to one of the main executable's symbols, as for a COPY
reloc. */
#define elf_machine_type_class(type) \
(((((type) == R_METAG_JMP_SLOT)) * ELF_RTYPE_CLASS_PLT) \
| (((type) == R_METAG_COPY) * ELF_RTYPE_CLASS_COPY))
static inline Elf32_Addr
elf_machine_dynamic(Elf32_Ehdr *header)
{
Elf32_Addr *got;
__asm__ ("MOV %0,A1LbP" : "=r" (got));
if (header->e_ident[EI_ABIVERSION] >= 1) {
/* GOT register offset was introduced with ABI v1 */
got = (Elf32_Addr*)((void*)got - GOT_REG_OFFSET);
}
return *got;
}
#define DL_BOOT_COMPUTE_GOT(GOT) \
((GOT) = elf_machine_dynamic(header))
static inline Elf32_Addr
elf_machine_load_address(void)
{
Elf32_Addr addr;
__asm__ ("MOV D1Ar1,A1LbP\n"
"ADDT D1Ar1,D1Ar1,#HI(__dl_start@GOTOFF)\n"
"ADD D1Ar1,D1Ar1,#LO(__dl_start@GOTOFF)\n"
"ADDT D0Ar2,D0Ar2,#HI(__dl_start_addr@GOTOFF)\n"
"ADD D0Ar2,D0Ar2,#LO(__dl_start_addr@GOTOFF)\n"
"GETD D0Ar2,[D0Ar2]\n"
"SUB %0,D1Ar1,D0Ar2\n"
".section .data\n"
"__dl_start_addr: .long __dl_start\n"
".previous\n"
: "=d" (addr) : : "D1Ar1", "D0Ar2");
return addr;
}
static inline void
elf_machine_relative(Elf32_Addr load_off, const Elf32_Addr rel_addr,
Elf32_Word relative_count)
{
Elf32_Rela *rpnt = (void *)rel_addr;
--rpnt;
do {
Elf32_Addr *const reloc_addr =
(void *)(load_off + (++rpnt)->r_offset);
*reloc_addr = load_off + rpnt->r_addend;
} while (--relative_count);
}
#define DL_MALLOC_ALIGN 8
#define HAVE_DL_INLINES_H
#define DL_IS_SPECIAL_SEGMENT(EPNT, PPNT) \
__dl_is_special_segment(EPNT, PPNT)
#define DL_MAP_SEGMENT(EPNT, PPNT, INFILE, FLAGS) \
__dl_map_segment (EPNT, PPNT, INFILE, FLAGS)
#define DL_CHECK_LIB_TYPE(epnt, piclib, _dl_progname, libname) \
do \
{ \
ElfW(Phdr) *ppnt_; \
char *header_ = (char *)epnt; \
ppnt_ = (ElfW(Phdr) *)(intptr_t) & header_[epnt->e_phoff]; \
if (ppnt_->p_vaddr >= 0x80000000 && \
ppnt_->p_vaddr < 0x82060000) \
(piclib) = 2; \
if (ppnt_->p_vaddr >= 0xe0200000 && \
ppnt_->p_vaddr < 0xe0260000) \
(piclib) = 2; \
} \
while (0)
#define _DL_PREAD(FD, BUF, SIZE, OFFSET) \
(_dl_pread((FD), (BUF), (SIZE), (OFFSET)))
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