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/* Copyright (C) 2003, 2004 Red Hat, Inc.
* Contributed by Alexandre Oliva <aoliva@redhat.com>
* Copyright (C) 2006-2011 Analog Devices, Inc.
* Based on ../i386/dl-sysdep.h
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#define HAVE_DL_INLINES_H
/*
* Initialization sequence for a GOT. Copy the resolver function
* descriptor and the pointer to the elf_resolve/link_map data
* structure. Initialize the got_value in the module while at that.
*/
#define INIT_GOT(GOT_BASE,MODULE) \
{ \
(MODULE)->loadaddr.got_value = (GOT_BASE); \
GOT_BASE[0] = ((unsigned long *)&_dl_linux_resolve)[0]; \
GOT_BASE[1] = ((unsigned long *)&_dl_linux_resolve)[1]; \
GOT_BASE[2] = (unsigned long) MODULE; \
}
struct elf_resolve;
struct funcdesc_value
{
void *entry_point;
void *got_value;
} __attribute__((__aligned__(8)));
struct funcdesc_ht;
#define DL_LOADADDR_TYPE struct elf32_fdpic_loadaddr
#define DL_RELOC_ADDR(LOADADDR, ADDR) \
((ElfW(Addr))__reloc_pointer ((void*)(ADDR), (LOADADDR).map))
#define DL_ADDR_TO_FUNC_PTR(ADDR, LOADADDR) \
((void(*)(void)) _dl_funcdesc_for ((void*)(ADDR), (LOADADDR).got_value))
#define _dl_stabilize_funcdesc(val) \
({ __asm__ ("" : "+m" (*(val))); (val); })
#define DL_CALL_FUNC_AT_ADDR(ADDR, LOADADDR, SIGNATURE, ...) \
({ struct funcdesc_value fd = { (void*)(ADDR), (LOADADDR).got_value }; \
void (*pf)(void) = (void*) _dl_stabilize_funcdesc (&fd); \
(* SIGNATURE pf)(__VA_ARGS__); })
#define DL_INIT_LOADADDR_BOOT(LOADADDR, BASEADDR) \
(__dl_init_loadaddr_map (&(LOADADDR), dl_boot_got_pointer, \
dl_boot_ldsomap ?: dl_boot_progmap))
#define DL_INIT_LOADADDR_PROG(LOADADDR, BASEADDR) \
(__dl_init_loadaddr_map (&(LOADADDR), 0, dl_boot_progmap))
#define DL_INIT_LOADADDR_EXTRA_DECLS \
int dl_init_loadaddr_load_count;
#define DL_INIT_LOADADDR(LOADADDR, BASEADDR, PHDR, PHDRCNT) \
(dl_init_loadaddr_load_count = \
__dl_init_loadaddr (&(LOADADDR), (PHDR), (PHDRCNT)))
#define DL_INIT_LOADADDR_HDR(LOADADDR, ADDR, PHDR) \
(__dl_init_loadaddr_hdr ((LOADADDR), (ADDR), (PHDR), \
dl_init_loadaddr_load_count))
#define DL_UPDATE_LOADADDR_HDR(LOADADDR, ADDR, PHDR) \
(__dl_update_loadaddr_hdr ((LOADADDR), (ADDR), (PHDR)))
#define DL_LOADADDR_UNMAP(LOADADDR, LEN) \
(__dl_loadaddr_unmap ((LOADADDR), (NULL)))
#define DL_LIB_UNMAP(LIB, LEN) \
(__dl_loadaddr_unmap ((LIB)->loadaddr, (LIB)->funcdesc_ht))
#define DL_LOADADDR_BASE(LOADADDR) \
((LOADADDR).got_value)
/* This is called from dladdr(), such that we map a function
descriptor's address to the function's entry point before trying to
find in which library it's defined. */
#define DL_LOOKUP_ADDRESS(ADDRESS) (_dl_lookup_address (ADDRESS))
#define DL_ADDR_IN_LOADADDR(ADDR, TPNT, TFROM) \
(! (TFROM) && __dl_addr_in_loadaddr ((void*)(ADDR), (TPNT)->loadaddr))
/*
* Compute the GOT address. On several platforms, we use assembly
* here. on FDPIC, there's no way to compute the GOT address,
* since the offset between text and data is not fixed, so we arrange
* for the ldso assembly entry point to pass this value as an argument
* to _dl_start. */
#define DL_BOOT_COMPUTE_GOT(got) ((got) = dl_boot_got_pointer)
#define DL_BOOT_COMPUTE_DYN(dpnt, got, load_addr) \
((dpnt) = dl_boot_ldso_dyn_pointer)
/* We want want to apply all relocations in the interpreter during
bootstrap. Because of this, we have to skip the interpreter
relocations in _dl_parse_relocation_information(), see
elfinterp.c. */
#define DL_SKIP_BOOTSTRAP_RELOC(SYMTAB, INDEX, STRTAB) 0
#ifdef __NR_pread
#define _DL_PREAD(FD, BUF, SIZE, OFFSET) \
(_dl_pread((FD), (BUF), (SIZE), (OFFSET)))
#endif
/* We want to return to dlsym() a function descriptor if the symbol
turns out to be a function. */
#define DL_FIND_HASH_VALUE(TPNT, TYPE_CLASS, SYM) \
(((TYPE_CLASS) & ELF_RTYPE_CLASS_DLSYM) \
&& ELF32_ST_TYPE((SYM)->st_info) == STT_FUNC \
? _dl_funcdesc_for ((void *)DL_RELOC_ADDR ((TPNT)->loadaddr, (SYM)->st_value), \
(TPNT)->loadaddr.got_value) \
: DL_RELOC_ADDR ((TPNT)->loadaddr, (SYM)->st_value))
#define DL_GET_READY_TO_RUN_EXTRA_PARMS \
, struct elf32_fdpic_loadmap *dl_boot_progmap, Elf32_Addr dl_boot_got_pointer
#define DL_GET_READY_TO_RUN_EXTRA_ARGS \
, dl_boot_progmap, dl_boot_got_pointer
#ifdef __USE_GNU
# include <link.h>
#else
# define __USE_GNU
# include <link.h>
# undef __USE_GNU
#endif
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